From: Marco Felsch m.felsch@pengutronix.de

[ Upstream commit 6c9762a78c325107dc37d20ee21002b841679209 ]

The ni1/ni2 ratio formula [1] uses the pclk which is the prescaled mclk. The max98088 datasheet [2] has no such formula but table-12 equals so we can assume that it is the same for both devices.

While on it make use of DIV_ROUND_CLOSEST_ULL().

[1] https://datasheets.maximintegrated.com/en/ds/MAX98089.pdf; page 86 [2] https://datasheets.maximintegrated.com/en/ds/MAX98088.pdf; page 82

Signed-off-by: Marco Felsch m.felsch@pengutronix.de Link: https://lore.kernel.org/r/20210423135402.32105-1-m.felsch@pengutronix.de Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/codecs/max98088.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/max98088.c b/sound/soc/codecs/max98088.c index f031d2caa8b7..fa4cdbfd0b80 100644 --- a/sound/soc/codecs/max98088.c +++ b/sound/soc/codecs/max98088.c @@ -41,6 +41,7 @@ struct max98088_priv { enum max98088_type devtype; struct max98088_pdata *pdata; struct clk *mclk; + unsigned char mclk_prescaler; unsigned int sysclk; struct max98088_cdata dai[2]; int eq_textcnt; @@ -998,13 +999,16 @@ static int max98088_dai1_hw_params(struct snd_pcm_substream *substream, /* Configure NI when operating as master */ if (snd_soc_component_read32(component, M98088_REG_14_DAI1_FORMAT) & M98088_DAI_MAS) { + unsigned long pclk; + if (max98088->sysclk == 0) { dev_err(component->dev, "Invalid system clock frequency\n"); return -EINVAL; } ni = 65536ULL * (rate < 50000 ? 96ULL : 48ULL) * (unsigned long long int)rate; - do_div(ni, (unsigned long long int)max98088->sysclk); + pclk = DIV_ROUND_CLOSEST(max98088->sysclk, max98088->mclk_prescaler); + ni = DIV_ROUND_CLOSEST_ULL(ni, pclk); snd_soc_component_write(component, M98088_REG_12_DAI1_CLKCFG_HI, (ni >> 8) & 0x7F); snd_soc_component_write(component, M98088_REG_13_DAI1_CLKCFG_LO, @@ -1065,13 +1069,16 @@ static int max98088_dai2_hw_params(struct snd_pcm_substream *substream, /* Configure NI when operating as master */ if (snd_soc_component_read32(component, M98088_REG_1C_DAI2_FORMAT) & M98088_DAI_MAS) { + unsigned long pclk; + if (max98088->sysclk == 0) { dev_err(component->dev, "Invalid system clock frequency\n"); return -EINVAL; } ni = 65536ULL * (rate < 50000 ? 96ULL : 48ULL) * (unsigned long long int)rate; - do_div(ni, (unsigned long long int)max98088->sysclk); + pclk = DIV_ROUND_CLOSEST(max98088->sysclk, max98088->mclk_prescaler); + ni = DIV_ROUND_CLOSEST_ULL(ni, pclk); snd_soc_component_write(component, M98088_REG_1A_DAI2_CLKCFG_HI, (ni >> 8) & 0x7F); snd_soc_component_write(component, M98088_REG_1B_DAI2_CLKCFG_LO, @@ -1113,8 +1120,10 @@ static int max98088_dai_set_sysclk(struct snd_soc_dai *dai, */ if ((freq >= 10000000) && (freq < 20000000)) { snd_soc_component_write(component, M98088_REG_10_SYS_CLK, 0x10); + max98088->mclk_prescaler = 1; } else if ((freq >= 20000000) && (freq < 30000000)) { snd_soc_component_write(component, M98088_REG_10_SYS_CLK, 0x20); + max98088->mclk_prescaler = 2; } else { dev_err(component->dev, "Invalid master clock frequency\n"); return -EINVAL;

From: Jeimon jjjinmeng.zhou@gmail.com

[ Upstream commit 8ab78863e9eff11910e1ac8bcf478060c29b379e ]

The function rawsock_create() calls a privileged function sk_alloc(), which requires a ns-aware check to check net->user_ns, i.e., ns_capable(). However, the original code checks the init_user_ns using capable(). So we replace the capable() with ns_capable().

Signed-off-by: Jeimon jjjinmeng.zhou@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- net/nfc/rawsock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c index 23d5e56306a4..8d649f4aee79 100644 --- a/net/nfc/rawsock.c +++ b/net/nfc/rawsock.c @@ -333,7 +333,7 @@ static int rawsock_create(struct net *net, struct socket *sock, return -ESOCKTNOSUPPORT;

if (sock->type == SOCK_RAW) { - if (!capable(CAP_NET_RAW)) + if (!ns_capable(net->user_ns, CAP_NET_RAW)) return -EPERM; sock->ops = &rawsock_raw_ops; } else {

From: Hans de Goede hdegoede@redhat.com

[ Upstream commit 28c268d3acdd4cbcd2ac320b85609e77f84e74a7 ]

Add a quirk for the Glavey TM800A550L tablet, this BYTCR tablet has no CHAN package in its ACPI tables and uses SSP0-AIF1 rather then SSP0-AIF2 which is the default for BYTCR devices.

Signed-off-by: Hans de Goede hdegoede@redhat.com Acked-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Link: https://lore.kernel.org/r/20210508150146.28403-1-hdegoede@redhat.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/intel/boards/bytcr_rt5640.c | 11 +++++++++++ 1 file changed, 11 insertions(+)

diff --git a/sound/soc/intel/boards/bytcr_rt5640.c b/sound/soc/intel/boards/bytcr_rt5640.c index 46a81d4f0b2d..1e6c86f2306f 100644 --- a/sound/soc/intel/boards/bytcr_rt5640.c +++ b/sound/soc/intel/boards/bytcr_rt5640.c @@ -568,6 +568,17 @@ static const struct dmi_system_id byt_rt5640_quirk_table[] = { BYT_RT5640_SSP0_AIF1 | BYT_RT5640_MCLK_EN), }, + { /* Glavey TM800A550L */ + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), + DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"), + /* Above strings are too generic, also match on BIOS version */ + DMI_MATCH(DMI_BIOS_VERSION, "ZY-8-BI-PX4S70VTR400-X423B-005-D"), + }, + .driver_data = (void *)(BYTCR_INPUT_DEFAULTS | + BYT_RT5640_SSP0_AIF1 | + BYT_RT5640_MCLK_EN), + }, { .matches = { DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),

From: Eric Farman farman@linux.ibm.com

[ Upstream commit 2af7a834a435460d546f0cf0a8b8e4d259f1d910 ]

Today, the stacked call to vfio_ccw_sch_io_todo() does three things:

1) Update a solicited IRB with CP information, and release the CP if the interrupt was the end of a START operation. 2) Copy the IRB data into the io_region, under the protection of the io_mutex 3) Reset the vfio-ccw FSM state to IDLE to acknowledge that vfio-ccw can accept more work.

The trouble is that step 3 is (A) invoked for both solicited and unsolicited interrupts, and (B) sitting after the mutex for step 2. This second piece becomes a problem if it processes an interrupt for a CLEAR SUBCHANNEL while another thread initiates a START, thus allowing the CP and FSM states to get out of sync. That is:

CPU 1 CPU 2 fsm_do_clear() fsm_irq() fsm_io_request() vfio_ccw_sch_io_todo() fsm_io_helper()

Since the FSM state and CP should be kept in sync, let's make a note when the CP is released, and rely on that as an indication that the FSM should also be reset at the end of this routine and open up the device for more work.

Signed-off-by: Eric Farman farman@linux.ibm.com Acked-by: Matthew Rosato mjrosato@linux.ibm.com Reviewed-by: Cornelia Huck cohuck@redhat.com Message-Id: 20210511195631.3995081-4-farman@linux.ibm.com Signed-off-by: Cornelia Huck cohuck@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/s390/cio/vfio_ccw_drv.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c index 339a6bc0339b..fd590d1cffc1 100644 --- a/drivers/s390/cio/vfio_ccw_drv.c +++ b/drivers/s390/cio/vfio_ccw_drv.c @@ -83,6 +83,7 @@ static void vfio_ccw_sch_io_todo(struct work_struct *work) struct vfio_ccw_private *private; struct irb *irb; bool is_final; + bool cp_is_finished = false;

private = container_of(work, struct vfio_ccw_private, io_work); irb = &private->irb; @@ -91,14 +92,21 @@ static void vfio_ccw_sch_io_todo(struct work_struct *work) (SCSW_ACTL_DEVACT | SCSW_ACTL_SCHACT)); if (scsw_is_solicited(&irb->scsw)) { cp_update_scsw(&private->cp, &irb->scsw); - if (is_final && private->state == VFIO_CCW_STATE_CP_PENDING) + if (is_final && private->state == VFIO_CCW_STATE_CP_PENDING) { cp_free(&private->cp); + cp_is_finished = true; + } } mutex_lock(&private->io_mutex); memcpy(private->io_region->irb_area, irb, sizeof(*irb)); mutex_unlock(&private->io_mutex);

- if (private->mdev && is_final) + /* + * Reset to IDLE only if processing of a channel program + * has finished. Do not overwrite a possible processing + * state if the final interrupt was for HSCH or CSCH. + */ + if (private->mdev && cp_is_finished) private->state = VFIO_CCW_STATE_IDLE;

if (private->io_trigger)

From: Chunyan Zhang chunyan.zhang@unisoc.com

[ Upstream commit 7907cad7d07e0055789ec0c534452f19dfe1fc80 ]

MODULE_DEVICE_TABLE is used to extract the device information out of the driver and builds a table when being compiled. If using this macro, kernel can find the driver if available when the device is plugged in, and then loads that driver and initializes the device.

Signed-off-by: Chunyan Zhang chunyan.zhang@unisoc.com Link: https://lore.kernel.org/r/20210512093534.243040-1-zhang.lyra@gmail.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/spi/spi-sprd.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/spi/spi-sprd.c b/drivers/spi/spi-sprd.c index c2bdf19ccdd2..44dc7b5b45ad 100644 --- a/drivers/spi/spi-sprd.c +++ b/drivers/spi/spi-sprd.c @@ -1066,6 +1066,7 @@ static const struct of_device_id sprd_spi_of_match[] = { { .compatible = "sprd,sc9860-spi", }, { /* sentinel */ } }; +MODULE_DEVICE_TABLE(of, sprd_spi_of_match);

static struct platform_driver sprd_spi_driver = { .driver = {

From: Johannes Berg johannes.berg@intel.com

[ Upstream commit 35d96e631860226d5dc4de0fad0a415362ec2457 ]

If bond_kobj_init() or later kzalloc() in bond_alloc_slave() fail, then we call kobject_put() on the slave->kobj. This in turn calls the release function slave_kobj_release() which will always try to cancel_delayed_work_sync(&slave->notify_work), which shouldn't be done on an uninitialized work struct.

Always initialize the work struct earlier to avoid problems here.

Syzbot bisected this down to a completely pointless commit, some fault injection may have been at work here that caused the alloc failure in the first place, which may interact badly with bisect.

Reported-by: syzbot+bfda097c12a00c8cae67@syzkaller.appspotmail.com Signed-off-by: Johannes Berg johannes.berg@intel.com Acked-by: Jay Vosburgh jay.vosburgh@canonical.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/bonding/bond_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 2bc4cb9e3095..e21643377162 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1335,6 +1335,7 @@ static struct slave *bond_alloc_slave(struct bonding *bond,

slave->bond = bond; slave->dev = slave_dev; + INIT_DELAYED_WORK(&slave->notify_work, bond_netdev_notify_work);

if (bond_kobj_init(slave)) return NULL; @@ -1347,7 +1348,6 @@ static struct slave *bond_alloc_slave(struct bonding *bond, return NULL; } } - INIT_DELAYED_WORK(&slave->notify_work, bond_netdev_notify_work);

return slave; }

From: Dan Carpenter dan.carpenter@oracle.com

[ Upstream commit 1dde47a66d4fb181830d6fa000e5ea86907b639e ]

We spotted a bug recently during a review where a driver was unregistering a bus that wasn't registered, which would trigger this BUG_ON(). Let's handle that situation more gracefully, and just print a warning and return.

Reported-by: Russell King (Oracle) rmk+kernel@armlinux.org.uk Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Reviewed-by: Russell King (Oracle) rmk+kernel@armlinux.org.uk Reviewed-by: Andrew Lunn andrew@lunn.ch Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/phy/mdio_bus.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 229e480179ff..5bf06eac04ba 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -453,7 +453,8 @@ void mdiobus_unregister(struct mii_bus *bus) struct mdio_device *mdiodev; int i;

- BUG_ON(bus->state != MDIOBUS_REGISTERED); + if (WARN_ON_ONCE(bus->state != MDIOBUS_REGISTERED)) + return; bus->state = MDIOBUS_UNREGISTERED;

for (i = 0; i < PHY_MAX_ADDR; i++) {

From: Sergey Senozhatsky senozhatsky@chromium.org

[ Upstream commit 940d71c6462e8151c78f28e4919aa8882ff2054e ]

If VCPU is suspended (VM suspend) in wq_watchdog_timer_fn() then once this VCPU resumes it will see the new jiffies value, while it may take a while before IRQ detects PVCLOCK_GUEST_STOPPED on this VCPU and updates all the watchdogs via pvclock_touch_watchdogs(). There is a small chance of misreported WQ stalls in the meantime, because new jiffies is time_after() old 'ts + thresh'.

wq_watchdog_timer_fn() { for_each_pool(pool, pi) { if (time_after(jiffies, ts + thresh)) { pr_emerg("BUG: workqueue lockup - pool"); } } }

Save jiffies at the beginning of this function and use that value for stall detection. If VM gets suspended then we continue using "old" jiffies value and old WQ touch timestamps. If IRQ at some point restarts the stall detection cycle (pvclock_touch_watchdogs()) then old jiffies will always be before new 'ts + thresh'.

Signed-off-by: Sergey Senozhatsky senozhatsky@chromium.org Signed-off-by: Tejun Heo tj@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- kernel/workqueue.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 5d7092e32912..8f41499d8257 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -50,6 +50,7 @@ #include <linux/uaccess.h> #include <linux/sched/isolation.h> #include <linux/nmi.h> +#include <linux/kvm_para.h>

#include "workqueue_internal.h"

@@ -5734,6 +5735,7 @@ static void wq_watchdog_timer_fn(struct timer_list *unused) { unsigned long thresh = READ_ONCE(wq_watchdog_thresh) * HZ; bool lockup_detected = false; + unsigned long now = jiffies; struct worker_pool *pool; int pi;

@@ -5748,6 +5750,12 @@ static void wq_watchdog_timer_fn(struct timer_list *unused) if (list_empty(&pool->worklist)) continue;

+ /* + * If a virtual machine is stopped by the host it can look to + * the watchdog like a stall. + */ + kvm_check_and_clear_guest_paused(); + /* get the latest of pool and touched timestamps */ pool_ts = READ_ONCE(pool->watchdog_ts); touched = READ_ONCE(wq_watchdog_touched); @@ -5766,12 +5774,12 @@ static void wq_watchdog_timer_fn(struct timer_list *unused) }

/* did we stall? */ - if (time_after(jiffies, ts + thresh)) { + if (time_after(now, ts + thresh)) { lockup_detected = true; pr_emerg("BUG: workqueue lockup - pool"); pr_cont_pool_info(pool); pr_cont(" stuck for %us!\n", - jiffies_to_msecs(jiffies - pool_ts) / 1000); + jiffies_to_msecs(now - pool_ts) / 1000); } }

From: Rao Shoaib rao.shoaib@oracle.com

[ Upstream commit aced3ce57cd37b5ca332bcacd370d01f5a8c5371 ]

When TCP is used as transport and a program on the system connects to RDS port 16385, connection is accepted but denied per the rules of RDS. However, RDS connections object is left in the list. Next loopback connection will select that connection object as it is at the head of list. The connection attempt will hang as the connection object is set to connect over TCP which is not allowed

The issue can be reproduced easily, use rds-ping to ping a local IP address. After that use any program like ncat to connect to the same IP address and port 16385. This will hang so ctrl-c out. Now try rds-ping, it will hang.

To fix the issue this patch adds checks to disallow the connection object creation and destroys the connection object.

Signed-off-by: Rao Shoaib rao.shoaib@oracle.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- net/rds/connection.c | 23 +++++++++++++++++------ net/rds/tcp.c | 4 ++-- net/rds/tcp.h | 3 ++- net/rds/tcp_listen.c | 6 ++++++ 4 files changed, 27 insertions(+), 9 deletions(-)

diff --git a/net/rds/connection.c b/net/rds/connection.c index ed7f2133acc2..c85bd6340eaa 100644 --- a/net/rds/connection.c +++ b/net/rds/connection.c @@ -240,12 +240,23 @@ static struct rds_connection *__rds_conn_create(struct net *net, if (loop_trans) { rds_trans_put(loop_trans); conn->c_loopback = 1; - if (is_outgoing && trans->t_prefer_loopback) { - /* "outgoing" connection - and the transport - * says it wants the connection handled by the - * loopback transport. This is what TCP does. - */ - trans = &rds_loop_transport; + if (trans->t_prefer_loopback) { + if (likely(is_outgoing)) { + /* "outgoing" connection to local address. + * Protocol says it wants the connection + * handled by the loopback transport. + * This is what TCP does. + */ + trans = &rds_loop_transport; + } else { + /* No transport currently in use + * should end up here, but if it + * does, reset/destroy the connection. + */ + kmem_cache_free(rds_conn_slab, conn); + conn = ERR_PTR(-EOPNOTSUPP); + goto out; + } } }

diff --git a/net/rds/tcp.c b/net/rds/tcp.c index 66121bc6f34e..1402e9166a7e 100644 --- a/net/rds/tcp.c +++ b/net/rds/tcp.c @@ -323,8 +323,8 @@ out: } #endif

-static int rds_tcp_laddr_check(struct net *net, const struct in6_addr *addr, - __u32 scope_id) +int rds_tcp_laddr_check(struct net *net, const struct in6_addr *addr, + __u32 scope_id) { struct net_device *dev = NULL; #if IS_ENABLED(CONFIG_IPV6) diff --git a/net/rds/tcp.h b/net/rds/tcp.h index 3c69361d21c7..4620549ecbeb 100644 --- a/net/rds/tcp.h +++ b/net/rds/tcp.h @@ -60,7 +60,8 @@ u32 rds_tcp_snd_una(struct rds_tcp_connection *tc); u64 rds_tcp_map_seq(struct rds_tcp_connection *tc, u32 seq); extern struct rds_transport rds_tcp_transport; void rds_tcp_accept_work(struct sock *sk); - +int rds_tcp_laddr_check(struct net *net, const struct in6_addr *addr, + __u32 scope_id); /* tcp_connect.c */ int rds_tcp_conn_path_connect(struct rds_conn_path *cp); void rds_tcp_conn_path_shutdown(struct rds_conn_path *conn); diff --git a/net/rds/tcp_listen.c b/net/rds/tcp_listen.c index 810a3a49e947..26a3e18e460d 100644 --- a/net/rds/tcp_listen.c +++ b/net/rds/tcp_listen.c @@ -198,6 +198,12 @@ int rds_tcp_accept_one(struct socket *sock) } #endif

+ if (!rds_tcp_laddr_check(sock_net(sock->sk), peer_addr, dev_if)) { + /* local address connection is only allowed via loopback */ + ret = -EOPNOTSUPP; + goto out; + } + conn = rds_conn_create(sock_net(sock->sk), my_addr, peer_addr, &rds_tcp_transport, 0, GFP_KERNEL, dev_if);

From: Matt Wang wwentao@vmware.com

[ Upstream commit e662502b3a782d479e67736a5a1c169a703d853a ]

Some commands (such as INQUIRY) may return less data than the initiator requested. To avoid conducting useless information, set the right residual count to make upper layer aware of this.

Before (INQUIRY PAGE 0xB0 with 128B buffer):

$ sg_raw -r 128 /dev/sda 12 01 B0 00 80 00 SCSI Status: Good

Received 128 bytes of data: 00 00 b0 00 3c 01 00 00 00 00 00 00 00 00 00 00 00 ...<............ 10 00 00 00 00 00 01 00 00 00 00 00 40 00 00 08 00 ...........@.... 20 80 00 00 00 00 00 00 00 00 00 20 00 00 00 00 00 .......... ..... 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 50 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 60 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

After:

$ sg_raw -r 128 /dev/sda 12 01 B0 00 80 00 SCSI Status: Good

Received 64 bytes of data: 00 00 b0 00 3c 01 00 00 00 00 00 00 00 00 00 00 00 ...<............ 10 00 00 00 00 00 01 00 00 00 00 00 40 00 00 08 00 ...........@.... 20 80 00 00 00 00 00 00 00 00 00 20 00 00 00 00 00 .......... ..... 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

[mkp: clarified description]

Link: https://lore.kernel.org/r/03C41093-B62E-43A2-913E-CFC92F1C70C3@vmware.com Signed-off-by: Matt Wang wwentao@vmware.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/vmw_pvscsi.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/vmw_pvscsi.c b/drivers/scsi/vmw_pvscsi.c index 70008816c91f..0ac342b1deb9 100644 --- a/drivers/scsi/vmw_pvscsi.c +++ b/drivers/scsi/vmw_pvscsi.c @@ -574,7 +574,13 @@ static void pvscsi_complete_request(struct pvscsi_adapter *adapter, case BTSTAT_SUCCESS: case BTSTAT_LINKED_COMMAND_COMPLETED: case BTSTAT_LINKED_COMMAND_COMPLETED_WITH_FLAG: - /* If everything went fine, let's move on.. */ + /* + * Commands like INQUIRY may transfer less data than + * requested by the initiator via bufflen. Set residual + * count to make upper layer aware of the actual amount + * of data returned. + */ + scsi_set_resid(cmd, scsi_bufflen(cmd) - e->dataLen); cmd->result = (DID_OK << 16); break;

From: Dmitry Bogdanov d.bogdanov@yadro.com

[ Upstream commit 2ef7665dfd88830f15415ba007c7c9a46be7acd8 ]

Target de-configuration panics at high CPU load because TPGT and WWPN can be removed on separate threads.

TPGT removal requests a reset HBA on a separate thread and waits for reset complete (phase1). Due to high CPU load that HBA reset can be delayed for some time.

WWPN removal does qlt_stop_phase2(). There it is believed that phase1 has already completed and thus tgt.tgt_ops is subsequently cleared. However, tgt.tgt_ops is needed to process incoming traffic and therefore this will cause one of the following panics:

NIP qlt_reset+0x7c/0x220 [qla2xxx] LR qlt_reset+0x68/0x220 [qla2xxx] Call Trace: 0xc000003ffff63a78 (unreliable) qlt_handle_imm_notify+0x800/0x10c0 [qla2xxx] qlt_24xx_atio_pkt+0x208/0x590 [qla2xxx] qlt_24xx_process_atio_queue+0x33c/0x7a0 [qla2xxx] qla83xx_msix_atio_q+0x54/0x90 [qla2xxx]

or

NIP qlt_24xx_handle_abts+0xd0/0x2a0 [qla2xxx] LR qlt_24xx_handle_abts+0xb4/0x2a0 [qla2xxx] Call Trace: qlt_24xx_handle_abts+0x90/0x2a0 [qla2xxx] (unreliable) qlt_24xx_process_atio_queue+0x500/0x7a0 [qla2xxx] qla83xx_msix_atio_q+0x54/0x90 [qla2xxx]

or

NIP qlt_create_sess+0x90/0x4e0 [qla2xxx] LR qla24xx_do_nack_work+0xa8/0x180 [qla2xxx] Call Trace: 0xc0000000348fba30 (unreliable) qla24xx_do_nack_work+0xa8/0x180 [qla2xxx] qla2x00_do_work+0x674/0xbf0 [qla2xxx] qla2x00_iocb_work_fn

The patch fixes the issue by serializing qlt_stop_phase1() and qlt_stop_phase2() functions to make WWPN removal wait for phase1 completion.

Link: https://lore.kernel.org/r/20210415203554.27890-1-d.bogdanov@yadro.com Reviewed-by: Roman Bolshakov r.bolshakov@yadro.com Signed-off-by: Dmitry Bogdanov d.bogdanov@yadro.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/qla2xxx/qla_target.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 509539ec58e9..57068e2faef5 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -1559,10 +1559,12 @@ void qlt_stop_phase2(struct qla_tgt *tgt) return; }

+ mutex_lock(&tgt->ha->optrom_mutex); mutex_lock(&vha->vha_tgt.tgt_mutex); tgt->tgt_stop = 0; tgt->tgt_stopped = 1; mutex_unlock(&vha->vha_tgt.tgt_mutex); + mutex_unlock(&tgt->ha->optrom_mutex);

ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", tgt);

From: Saubhik Mukherjee saubhik.mukherjee@gmail.com

[ Upstream commit a4dd4fc6105e54393d637450a11d4cddb5fabc4f ]

In cops_probe1(), there is a write to dev->base_addr after requesting an interrupt line and registering the interrupt handler cops_interrupt(). The handler might be called in parallel to handle an interrupt. cops_interrupt() tries to read dev->base_addr leading to a potential data race. So write to dev->base_addr before calling request_irq().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Saubhik Mukherjee saubhik.mukherjee@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/appletalk/cops.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/appletalk/cops.c b/drivers/net/appletalk/cops.c index b3c63d2f16aa..5c89c2eff891 100644 --- a/drivers/net/appletalk/cops.c +++ b/drivers/net/appletalk/cops.c @@ -325,6 +325,8 @@ static int __init cops_probe1(struct net_device *dev, int ioaddr) break; }

+ dev->base_addr = ioaddr; + /* Reserve any actual interrupt. */ if (dev->irq) { retval = request_irq(dev->irq, cops_interrupt, 0, dev->name, dev); @@ -332,8 +334,6 @@ static int __init cops_probe1(struct net_device *dev, int ioaddr) goto err_out; }

- dev->base_addr = ioaddr; - lp = netdev_priv(dev); spin_lock_init(&lp->lock);

From: Hannes Reinecke hare@suse.de

[ Upstream commit 4d9442bf263ac45d495bb7ecf75009e59c0622b2 ]

Add an additional decoding for 'host pathing error' during connect.

Signed-off-by: Hannes Reinecke hare@suse.de Reviewed-by: Sagi Grimberg sagi@grimberg.me Reviewed-by: Chaitanya Kulkarni chaitanya.kulkarni@wdc.com Reviewed-by: Himanshu Madhani himanshu.madhani@oracle.com Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/host/fabrics.c | 5 +++++ 1 file changed, 5 insertions(+)

diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c index 3bb71f177dfd..d884187d7706 100644 --- a/drivers/nvme/host/fabrics.c +++ b/drivers/nvme/host/fabrics.c @@ -336,6 +336,11 @@ static void nvmf_log_connect_error(struct nvme_ctrl *ctrl, cmd->connect.recfmt); break;

+ case NVME_SC_HOST_PATH_ERROR: + dev_err(ctrl->device, + "Connect command failed: host path error\n"); + break; + default: dev_err(ctrl->device, "Connect command failed, error wo/DNR bit: %d\n",

From: John Keeping john@metanate.com

[ Upstream commit 0c1f3193b1cdd21e7182f97dc9bca7d284d18a15 ]

The third parameter of module_param() is permissions for the sysfs node but it looks like it is being used as the initial value of the parameter here. In fact, false here equates to omitting the file from sysfs and does not affect the value of require_signatures.

Making the parameter writable is not simple because going from false->true is fine but it should not be possible to remove the requirement to verify a signature. But it can be useful to inspect the value of this parameter from userspace, so change the permissions to make a read-only file in sysfs.

Signed-off-by: John Keeping john@metanate.com Signed-off-by: Mike Snitzer snitzer@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/dm-verity-verify-sig.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/dm-verity-verify-sig.c b/drivers/md/dm-verity-verify-sig.c index 614e43db93aa..919154ae4cae 100644 --- a/drivers/md/dm-verity-verify-sig.c +++ b/drivers/md/dm-verity-verify-sig.c @@ -15,7 +15,7 @@ #define DM_VERITY_VERIFY_ERR(s) DM_VERITY_ROOT_HASH_VERIFICATION " " s

static bool require_signatures; -module_param(require_signatures, bool, false); +module_param(require_signatures, bool, 0444); MODULE_PARM_DESC(require_signatures, "Verify the roothash of dm-verity hash tree");

From: Sagi Grimberg sagi@grimberg.me

[ Upstream commit 042a3eaad6daeabcfaf163aa44da8ea3cf8b5496 ]

We need to select NVME_CORE.

Signed-off-by: Sagi Grimberg sagi@grimberg.me Reviewed-by: Max Gurtovoy mgurtovoy@nvidia.com Reviewed-by: Chaitanya Kulkarni chaitanya.kulkarni@wdc.com Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/host/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/host/Kconfig b/drivers/nvme/host/Kconfig index 7b3f6555e67b..cf0ae71c489e 100644 --- a/drivers/nvme/host/Kconfig +++ b/drivers/nvme/host/Kconfig @@ -62,7 +62,8 @@ config NVME_FC config NVME_TCP tristate "NVM Express over Fabrics TCP host driver" depends on INET - depends on BLK_DEV_NVME + depends on BLOCK + select NVME_CORE select NVME_FABRICS select CRYPTO select CRYPTO_CRC32C

From: Chris Packham chris.packham@alliedtelesis.co.nz

[ Upstream commit 19ae697a1e4edf1d755b413e3aa38da65e2db23b ]

The i2c controllers on the P1010 have an erratum where the documented scheme for i2c bus recovery will not work (A-004447). A different mechanism is needed which is documented in the P1010 Chip Errata Rev L.

Signed-off-by: Chris Packham chris.packham@alliedtelesis.co.nz Acked-by: Michael Ellerman mpe@ellerman.id.au Signed-off-by: Wolfram Sang wsa@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/boot/dts/fsl/p1010si-post.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+)

diff --git a/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi b/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi index 1b4aafc1f6a2..9716a0484ecf 100644 --- a/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi @@ -122,7 +122,15 @@ };

/include/ "pq3-i2c-0.dtsi" + i2c@3000 { + fsl,i2c-erratum-a004447; + }; + /include/ "pq3-i2c-1.dtsi" + i2c@3100 { + fsl,i2c-erratum-a004447; + }; + /include/ "pq3-duart-0.dtsi" /include/ "pq3-espi-0.dtsi" spi0: spi@7000 {

From: Lukas Wunner lukas@wunner.de

[ Upstream commit 2ec6f20b33eb4f62ab90bdcd620436c883ec3af6 ]

Commit c7299fea6769 ("spi: Fix spi device unregister flow") changed the SPI core's behavior if the ->setup() hook returns an error upon adding an spi_device: Before, the ->cleanup() hook was invoked to free any allocations that were made by ->setup(). With the commit, that's no longer the case, so the ->setup() hook is expected to free the allocations itself.

I've identified 5 drivers which depend on the old behavior and am fixing them up hereinafter: spi-bitbang.c spi-fsl-spi.c spi-omap-uwire.c spi-omap2-mcspi.c spi-pxa2xx.c

Importantly, ->setup() is not only invoked on spi_device *addition*: It may subsequently be called to *change* SPI parameters. If changing these SPI parameters fails, freeing memory allocations would be wrong. That should only be done if the spi_device is finally destroyed. I am therefore using a bool "initial_setup" in 4 of the affected drivers to differentiate between the invocation on *adding* the spi_device and any subsequent invocations: spi-bitbang.c spi-fsl-spi.c spi-omap-uwire.c spi-omap2-mcspi.c

In spi-pxa2xx.c, it seems the ->setup() hook can only fail on spi_device addition, not any subsequent calls. It therefore doesn't need the bool.

It's worth noting that 5 other drivers already perform a cleanup if the ->setup() hook fails. Before c7299fea6769, they caused a double-free if ->setup() failed on spi_device addition. Since the commit, they're fine. These drivers are: spi-mpc512x-psc.c spi-pl022.c spi-s3c64xx.c spi-st-ssc4.c spi-tegra114.c

(spi-pxa2xx.c also already performs a cleanup, but only in one of several error paths.)

Fixes: c7299fea6769 ("spi: Fix spi device unregister flow") Signed-off-by: Lukas Wunner lukas@wunner.de Cc: Saravana Kannan saravanak@google.com Acked-by: Andy Shevchenko andriy.shevchenko@linux.intel.com # pxa2xx Link: https://lore.kernel.org/r/f76a0599469f265b69c371538794101fa37b5536.162214932... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/spi/spi-bitbang.c | 18 ++++++++++++---- drivers/spi/spi-fsl-spi.c | 4 ++++ drivers/spi/spi-omap-uwire.c | 9 +++++++- drivers/spi/spi-omap2-mcspi.c | 39 +++++++++++++++++++++-------------- drivers/spi/spi-pxa2xx.c | 9 +++++++- 5 files changed, 57 insertions(+), 22 deletions(-)

diff --git a/drivers/spi/spi-bitbang.c b/drivers/spi/spi-bitbang.c index d84e22dd6f9f..7d61a3b71ee5 100644 --- a/drivers/spi/spi-bitbang.c +++ b/drivers/spi/spi-bitbang.c @@ -181,6 +181,8 @@ int spi_bitbang_setup(struct spi_device *spi) { struct spi_bitbang_cs *cs = spi->controller_state; struct spi_bitbang *bitbang; + bool initial_setup = false; + int retval;

bitbang = spi_master_get_devdata(spi->master);

@@ -189,22 +191,30 @@ int spi_bitbang_setup(struct spi_device *spi) if (!cs) return -ENOMEM; spi->controller_state = cs; + initial_setup = true; }

/* per-word shift register access, in hardware or bitbanging */ cs->txrx_word = bitbang->txrx_word[spi->mode & (SPI_CPOL|SPI_CPHA)]; - if (!cs->txrx_word) - return -EINVAL; + if (!cs->txrx_word) { + retval = -EINVAL; + goto err_free; + }

if (bitbang->setup_transfer) { - int retval = bitbang->setup_transfer(spi, NULL); + retval = bitbang->setup_transfer(spi, NULL); if (retval < 0) - return retval; + goto err_free; }

dev_dbg(&spi->dev, "%s, %u nsec/bit\n", __func__, 2 * cs->nsecs);

return 0; + +err_free: + if (initial_setup) + kfree(cs); + return retval; } EXPORT_SYMBOL_GPL(spi_bitbang_setup);

diff --git a/drivers/spi/spi-fsl-spi.c b/drivers/spi/spi-fsl-spi.c index 18a93a2854d8..02b999d48ca1 100644 --- a/drivers/spi/spi-fsl-spi.c +++ b/drivers/spi/spi-fsl-spi.c @@ -442,6 +442,7 @@ static int fsl_spi_setup(struct spi_device *spi) { struct mpc8xxx_spi *mpc8xxx_spi; struct fsl_spi_reg *reg_base; + bool initial_setup = false; int retval; u32 hw_mode; struct spi_mpc8xxx_cs *cs = spi_get_ctldata(spi); @@ -454,6 +455,7 @@ static int fsl_spi_setup(struct spi_device *spi) if (!cs) return -ENOMEM; spi_set_ctldata(spi, cs); + initial_setup = true; } mpc8xxx_spi = spi_master_get_devdata(spi->master);

@@ -477,6 +479,8 @@ static int fsl_spi_setup(struct spi_device *spi) retval = fsl_spi_setup_transfer(spi, NULL); if (retval < 0) { cs->hw_mode = hw_mode; /* Restore settings */ + if (initial_setup) + kfree(cs); return retval; }

diff --git a/drivers/spi/spi-omap-uwire.c b/drivers/spi/spi-omap-uwire.c index ce8dbdbce312..85ee907e28f9 100644 --- a/drivers/spi/spi-omap-uwire.c +++ b/drivers/spi/spi-omap-uwire.c @@ -424,15 +424,22 @@ done: static int uwire_setup(struct spi_device *spi) { struct uwire_state *ust = spi->controller_state; + bool initial_setup = false; + int status;

if (ust == NULL) { ust = kzalloc(sizeof(*ust), GFP_KERNEL); if (ust == NULL) return -ENOMEM; spi->controller_state = ust; + initial_setup = true; }

- return uwire_setup_transfer(spi, NULL); + status = uwire_setup_transfer(spi, NULL); + if (status && initial_setup) + kfree(ust); + + return status; }

static void uwire_cleanup(struct spi_device *spi) diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c index 7646b4b56bed..38f4be209234 100644 --- a/drivers/spi/spi-omap2-mcspi.c +++ b/drivers/spi/spi-omap2-mcspi.c @@ -1043,8 +1043,25 @@ static void omap2_mcspi_release_dma(struct spi_master *master) } }

+static void omap2_mcspi_cleanup(struct spi_device *spi) +{ + struct omap2_mcspi_cs *cs; + + if (spi->controller_state) { + /* Unlink controller state from context save list */ + cs = spi->controller_state; + list_del(&cs->node); + + kfree(cs); + } + + if (gpio_is_valid(spi->cs_gpio)) + gpio_free(spi->cs_gpio); +} + static int omap2_mcspi_setup(struct spi_device *spi) { + bool initial_setup = false; int ret; struct omap2_mcspi *mcspi = spi_master_get_devdata(spi->master); struct omap2_mcspi_regs *ctx = &mcspi->ctx; @@ -1062,6 +1079,7 @@ static int omap2_mcspi_setup(struct spi_device *spi) spi->controller_state = cs; /* Link this to context save list */ list_add_tail(&cs->node, &ctx->cs); + initial_setup = true;

if (gpio_is_valid(spi->cs_gpio)) { ret = gpio_request(spi->cs_gpio, dev_name(&spi->dev)); @@ -1077,33 +1095,22 @@ static int omap2_mcspi_setup(struct spi_device *spi) ret = pm_runtime_get_sync(mcspi->dev); if (ret < 0) { pm_runtime_put_noidle(mcspi->dev); + if (initial_setup) + omap2_mcspi_cleanup(spi);

return ret; }

ret = omap2_mcspi_setup_transfer(spi, NULL); + if (ret && initial_setup) + omap2_mcspi_cleanup(spi); + pm_runtime_mark_last_busy(mcspi->dev); pm_runtime_put_autosuspend(mcspi->dev);

return ret; }

-static void omap2_mcspi_cleanup(struct spi_device *spi) -{ - struct omap2_mcspi_cs *cs; - - if (spi->controller_state) { - /* Unlink controller state from context save list */ - cs = spi->controller_state; - list_del(&cs->node); - - kfree(cs); - } - - if (gpio_is_valid(spi->cs_gpio)) - gpio_free(spi->cs_gpio); -} - static irqreturn_t omap2_mcspi_irq_handler(int irq, void *data) { struct omap2_mcspi *mcspi = data; diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index f5a10a94f156..e32d51f27944 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1241,6 +1241,8 @@ static int setup_cs(struct spi_device *spi, struct chip_data *chip, chip->gpio_cs_inverted = spi->mode & SPI_CS_HIGH;

err = gpiod_direction_output(gpiod, !chip->gpio_cs_inverted); + if (err) + gpiod_put(chip->gpiod_cs); }

return err; @@ -1254,6 +1256,7 @@ static int setup(struct spi_device *spi) struct driver_data *drv_data = spi_controller_get_devdata(spi->controller); uint tx_thres, tx_hi_thres, rx_thres; + int err;

switch (drv_data->ssp_type) { case QUARK_X1000_SSP: @@ -1400,7 +1403,11 @@ static int setup(struct spi_device *spi) if (drv_data->ssp_type == CE4100_SSP) return 0;

- return setup_cs(spi, chip, chip_info); + err = setup_cs(spi, chip, chip_info); + if (err) + kfree(chip); + + return err; }

static void cleanup(struct spi_device *spi)

From: Chris Packham chris.packham@alliedtelesis.co.nz

[ Upstream commit 8f0cdec8b5fd94135d643662506ee94ae9e98785 ]

The P2040/P2041 has an erratum where the normal i2c recovery mechanism does not work. Implement the alternative recovery mechanism documented in the P2040 Chip Errata Rev Q.

Signed-off-by: Chris Packham chris.packham@alliedtelesis.co.nz Signed-off-by: Wolfram Sang wsa@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/i2c/busses/i2c-mpc.c | 79 +++++++++++++++++++++++++++++++++++- 1 file changed, 78 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c index 6a0d55e9e8e3..af349661fd76 100644 --- a/drivers/i2c/busses/i2c-mpc.c +++ b/drivers/i2c/busses/i2c-mpc.c @@ -23,6 +23,7 @@

#include <linux/clk.h> #include <linux/io.h> +#include <linux/iopoll.h> #include <linux/fsl_devices.h> #include <linux/i2c.h> #include <linux/interrupt.h> @@ -49,6 +50,7 @@ #define CCR_MTX 0x10 #define CCR_TXAK 0x08 #define CCR_RSTA 0x04 +#define CCR_RSVD 0x02

#define CSR_MCF 0x80 #define CSR_MAAS 0x40 @@ -70,6 +72,7 @@ struct mpc_i2c { u8 fdr, dfsrr; #endif struct clk *clk_per; + bool has_errata_A004447; };

struct mpc_i2c_divider { @@ -176,6 +179,75 @@ static int i2c_wait(struct mpc_i2c *i2c, unsigned timeout, int writing) return 0; }

+static int i2c_mpc_wait_sr(struct mpc_i2c *i2c, int mask) +{ + void __iomem *addr = i2c->base + MPC_I2C_SR; + u8 val; + + return readb_poll_timeout(addr, val, val & mask, 0, 100); +} + +/* + * Workaround for Erratum A004447. From the P2040CE Rev Q + * + * 1. Set up the frequency divider and sampling rate. + * 2. I2CCR - a0h + * 3. Poll for I2CSR[MBB] to get set. + * 4. If I2CSR[MAL] is set (an indication that SDA is stuck low), then go to + * step 5. If MAL is not set, then go to step 13. + * 5. I2CCR - 00h + * 6. I2CCR - 22h + * 7. I2CCR - a2h + * 8. Poll for I2CSR[MBB] to get set. + * 9. Issue read to I2CDR. + * 10. Poll for I2CSR[MIF] to be set. + * 11. I2CCR - 82h + * 12. Workaround complete. Skip the next steps. + * 13. Issue read to I2CDR. + * 14. Poll for I2CSR[MIF] to be set. + * 15. I2CCR - 80h + */ +static void mpc_i2c_fixup_A004447(struct mpc_i2c *i2c) +{ + int ret; + u32 val; + + writeccr(i2c, CCR_MEN | CCR_MSTA); + ret = i2c_mpc_wait_sr(i2c, CSR_MBB); + if (ret) { + dev_err(i2c->dev, "timeout waiting for CSR_MBB\n"); + return; + } + + val = readb(i2c->base + MPC_I2C_SR); + + if (val & CSR_MAL) { + writeccr(i2c, 0x00); + writeccr(i2c, CCR_MSTA | CCR_RSVD); + writeccr(i2c, CCR_MEN | CCR_MSTA | CCR_RSVD); + ret = i2c_mpc_wait_sr(i2c, CSR_MBB); + if (ret) { + dev_err(i2c->dev, "timeout waiting for CSR_MBB\n"); + return; + } + val = readb(i2c->base + MPC_I2C_DR); + ret = i2c_mpc_wait_sr(i2c, CSR_MIF); + if (ret) { + dev_err(i2c->dev, "timeout waiting for CSR_MIF\n"); + return; + } + writeccr(i2c, CCR_MEN | CCR_RSVD); + } else { + val = readb(i2c->base + MPC_I2C_DR); + ret = i2c_mpc_wait_sr(i2c, CSR_MIF); + if (ret) { + dev_err(i2c->dev, "timeout waiting for CSR_MIF\n"); + return; + } + writeccr(i2c, CCR_MEN); + } +} + #if defined(CONFIG_PPC_MPC52xx) || defined(CONFIG_PPC_MPC512x) static const struct mpc_i2c_divider mpc_i2c_dividers_52xx[] = { {20, 0x20}, {22, 0x21}, {24, 0x22}, {26, 0x23}, @@ -641,7 +713,10 @@ static int fsl_i2c_bus_recovery(struct i2c_adapter *adap) { struct mpc_i2c *i2c = i2c_get_adapdata(adap);

- mpc_i2c_fixup(i2c); + if (i2c->has_errata_A004447) + mpc_i2c_fixup_A004447(i2c); + else + mpc_i2c_fixup(i2c);

return 0; } @@ -745,6 +820,8 @@ static int fsl_i2c_probe(struct platform_device *op) dev_info(i2c->dev, "timeout %u us\n", mpc_ops.timeout * 1000000 / HZ);

platform_set_drvdata(op, i2c); + if (of_property_read_bool(op->dev.of_node, "fsl,i2c-erratum-a004447")) + i2c->has_errata_A004447 = true;

i2c->adap = mpc_ops; of_address_to_resource(op->dev.of_node, 0, &res);

From: Lukas Wunner lukas@wunner.de

commit 13817d466eb8713a1ffd254f537402f091d48444 upstream.

Commit 571e31fa60b3 ("spi: bcm2835: Cache CS register value for ->prepare_message()") limited the number of slaves to 3 at compile-time. The limitation was necessitated by a statically-sized array prepare_cs[] in the driver private data which contains a per-slave register value.

The commit sought to enforce the limitation at run-time by setting the controller's num_chipselect to 3: Slaves with a higher chipselect are rejected by spi_add_device().

However the commit neglected that num_chipselect only limits the number of *native* chipselects. If GPIO chipselects are specified in the device tree for more than 3 slaves, num_chipselect is silently raised by of_spi_get_gpio_numbers() and the result are out-of-bounds accesses to the statically-sized array prepare_cs[].

As a bandaid fix which is backportable to stable, raise the number of allowed slaves to 24 (which "ought to be enough for anybody"), enforce the limitation on slave ->setup and revert num_chipselect to 3 (which is the number of native chipselects supported by the controller). An upcoming for-next commit will allow an arbitrary number of slaves.

Fixes: 571e31fa60b3 ("spi: bcm2835: Cache CS register value for ->prepare_message()") Reported-by: Joe Burmeister joe.burmeister@devtank.co.uk Signed-off-by: Lukas Wunner lukas@wunner.de Cc: stable@vger.kernel.org # v5.4+ Cc: Phil Elwell phil@raspberrypi.com Link: https://lore.kernel.org/r/75854affc1923309fde05e47494263bde73e5592.162170321... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/spi/spi-bcm2835.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)

--- a/drivers/spi/spi-bcm2835.c +++ b/drivers/spi/spi-bcm2835.c @@ -68,7 +68,7 @@ #define BCM2835_SPI_FIFO_SIZE 64 #define BCM2835_SPI_FIFO_SIZE_3_4 48 #define BCM2835_SPI_DMA_MIN_LENGTH 96 -#define BCM2835_SPI_NUM_CS 3 /* raise as necessary */ +#define BCM2835_SPI_NUM_CS 24 /* raise as necessary */ #define BCM2835_SPI_MODE_BITS (SPI_CPOL | SPI_CPHA | SPI_CS_HIGH \ | SPI_NO_CS | SPI_3WIRE)

@@ -1181,6 +1181,12 @@ static int bcm2835_spi_setup(struct spi_ struct gpio_chip *chip; u32 cs;

+ if (spi->chip_select >= BCM2835_SPI_NUM_CS) { + dev_err(&spi->dev, "only %d chip-selects supported\n", + BCM2835_SPI_NUM_CS - 1); + return -EINVAL; + } + /* * Precalculate SPI slave's CS register value for ->prepare_message(): * The driver always uses software-controlled GPIO chip select, hence @@ -1274,7 +1280,7 @@ static int bcm2835_spi_probe(struct plat ctlr->use_gpio_descriptors = true; ctlr->mode_bits = BCM2835_SPI_MODE_BITS; ctlr->bits_per_word_mask = SPI_BPW_MASK(8); - ctlr->num_chipselect = BCM2835_SPI_NUM_CS; + ctlr->num_chipselect = 3; ctlr->setup = bcm2835_spi_setup; ctlr->transfer_one = bcm2835_spi_transfer_one; ctlr->handle_err = bcm2835_spi_handle_err;

From: Desmond Cheong Zhi Xi desmondcheongzx@gmail.com

commit c336a5ee984708db4826ef9e47d184e638e29717 upstream.

This patch eliminates the following smatch warning: drivers/gpu/drm/drm_auth.c:320 drm_master_release() warn: unlocked access 'master' (line 318) expected lock '&dev->master_mutex'

The 'file_priv->master' field should be protected by the mutex lock to '&dev->master_mutex'. This is because other processes can concurrently modify this field and free the current 'file_priv->master' pointer. This could result in a use-after-free error when 'master' is dereferenced in subsequent function calls to 'drm_legacy_lock_master_cleanup()' or to 'drm_lease_revoke()'.

An example of a scenario that would produce this error can be seen from a similar bug in 'drm_getunique()' that was reported by Syzbot: https://syzkaller.appspot.com/bug?id=148d2f1dfac64af52ffd27b661981a540724f80...

In the Syzbot report, another process concurrently acquired the device's master mutex in 'drm_setmaster_ioctl()', then overwrote 'fpriv->master' in 'drm_new_set_master()'. The old value of 'fpriv->master' was subsequently freed before the mutex was unlocked.

Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Desmond Cheong Zhi Xi desmondcheongzx@gmail.com Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter daniel.vetter@ffwll.ch Link: https://patchwork.freedesktop.org/patch/msgid/20210609092119.173590-1-desmon... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/drm_auth.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/drm_auth.c +++ b/drivers/gpu/drm/drm_auth.c @@ -268,9 +268,10 @@ int drm_master_open(struct drm_file *fil void drm_master_release(struct drm_file *file_priv) { struct drm_device *dev = file_priv->minor->dev; - struct drm_master *master = file_priv->master; + struct drm_master *master;

mutex_lock(&dev->master_mutex); + master = file_priv->master; if (file_priv->magic) idr_remove(&file_priv->master->magic_map, file_priv->magic);

From: Wenli Looi wlooi@ucalgary.ca

commit 43c85d770db80cb135f576f8fde6ff1a08e707a4 upstream.

The sinfo.pertid and sinfo.generation variables are not initialized and it causes a crash when we use this as a wireless access point.

[ 456.873025] ------------[ cut here ]------------ [ 456.878198] kernel BUG at mm/slub.c:3968! [ 456.882680] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM

[ snip ]

[ 457.271004] Backtrace: [ 457.273733] [<c02b7ee4>] (kfree) from [<c0e2a470>] (nl80211_send_station+0x954/0xfc4) [ 457.282481] r9:eccca0c0 r8:e8edfec0 r7:00000000 r6:00000011 r5:e80a9480 r4:e8edfe00 [ 457.291132] [<c0e29b1c>] (nl80211_send_station) from [<c0e2b18c>] (cfg80211_new_sta+0x90/0x1cc) [ 457.300850] r10:e80a9480 r9:e8edfe00 r8:ea678cca r7:00000a20 r6:00000000 r5:ec46d000 [ 457.309586] r4:ec46d9e0 [ 457.312433] [<c0e2b0fc>] (cfg80211_new_sta) from [<bf086684>] (rtw_cfg80211_indicate_sta_assoc+0x80/0x9c [r8723bs]) [ 457.324095] r10:00009930 r9:e85b9d80 r8:bf091050 r7:00000000 r6:00000000 r5:0000001c [ 457.332831] r4:c1606788 [ 457.335692] [<bf086604>] (rtw_cfg80211_indicate_sta_assoc [r8723bs]) from [<bf03df38>] (rtw_stassoc_event_callback+0x1c8/0x1d4 [r8723bs]) [ 457.349489] r7:ea678cc0 r6:000000a1 r5:f1225f84 r4:f086b000 [ 457.355845] [<bf03dd70>] (rtw_stassoc_event_callback [r8723bs]) from [<bf048e4c>] (mlme_evt_hdl+0x8c/0xb4 [r8723bs]) [ 457.367601] r7:c1604900 r6:f086c4b8 r5:00000000 r4:f086c000 [ 457.373959] [<bf048dc0>] (mlme_evt_hdl [r8723bs]) from [<bf03693c>] (rtw_cmd_thread+0x198/0x3d8 [r8723bs]) [ 457.384744] r5:f086e000 r4:f086c000 [ 457.388754] [<bf0367a4>] (rtw_cmd_thread [r8723bs]) from [<c014a214>] (kthread+0x170/0x174) [ 457.398083] r10:ed7a57e8 r9:bf0367a4 r8:f086b000 r7:e8ede000 r6:00000000 r5:e9975200 [ 457.406828] r4:e8369900 [ 457.409653] [<c014a0a4>] (kthread) from [<c01010e8>] (ret_from_fork+0x14/0x2c) [ 457.417718] Exception stack(0xe8edffb0 to 0xe8edfff8) [ 457.423356] ffa0: 00000000 00000000 00000000 00000000 [ 457.432492] ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 457.441618] ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 [ 457.449006] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c014a0a4 [ 457.457750] r4:e9975200 [ 457.460574] Code: 1a000003 e5953004 e3130001 1a000000 (e7f001f2) [ 457.467381] ---[ end trace 4acbc8c15e9e6aa7 ]---

Link: https://forum.armbian.com/topic/14727-wifi-ap-kernel-bug-in-kernel-5444/ Fixes: 8689c051a201 ("cfg80211: dynamically allocate per-tid stats for station info") Fixes: f5ea9120be2e ("nl80211: add generation number to all dumps") Signed-off-by: Wenli Looi wlooi@ucalgary.ca Reviewed-by: Dan Carpenter dan.carpenter@oracle.com Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20210608064620.74059-1-wlooi@ucalgary.ca Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c +++ b/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c @@ -2406,7 +2406,7 @@ void rtw_cfg80211_indicate_sta_assoc(str DBG_871X(FUNC_ADPT_FMT"\n", FUNC_ADPT_ARG(padapter));

{ - struct station_info sinfo; + struct station_info sinfo = {}; u8 ie_offset; if (GetFrameSubType(pmgmt_frame) == WIFI_ASSOCREQ) ie_offset = _ASOCREQ_IE_OFFSET_;

From: Nikolay Borisov nborisov@suse.com

commit aefd7f7065567a4666f42c0fc8cdb379d2e036bf upstream.

Syzbot managed to trigger this assert while performing its fuzzing. Turns out it's better to have those asserts turned into full-fledged checks so that in case buggy btrfs images are mounted the users gets an error and mounting is stopped. Alternatively with CONFIG_BTRFS_ASSERT disabled such image would have been erroneously allowed to be mounted.

Reported-by: syzbot+a6bf271c02e4fe66b4e4@syzkaller.appspotmail.com CC: stable@vger.kernel.org # 5.4+ Reviewed-by: Johannes Thumshirn johannes.thumshirn@wdc.com Reviewed-by: Qu Wenruo wqu@suse.com Signed-off-by: Nikolay Borisov nborisov@suse.com Reviewed-by: David Sterba dsterba@suse.com [ add uuids to the messages ] Signed-off-by: David Sterba dsterba@suse.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/btrfs/disk-io.c | 26 ++++++++++++++++++-------- 1 file changed, 18 insertions(+), 8 deletions(-)

--- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2463,6 +2463,24 @@ static int validate_super(struct btrfs_f ret = -EINVAL; }

+ if (memcmp(fs_info->fs_devices->fsid, fs_info->super_copy->fsid, + BTRFS_FSID_SIZE)) { + btrfs_err(fs_info, + "superblock fsid doesn't match fsid of fs_devices: %pU != %pU", + fs_info->super_copy->fsid, fs_info->fs_devices->fsid); + ret = -EINVAL; + } + + if (btrfs_fs_incompat(fs_info, METADATA_UUID) && + memcmp(fs_info->fs_devices->metadata_uuid, + fs_info->super_copy->metadata_uuid, BTRFS_FSID_SIZE)) { + btrfs_err(fs_info, +"superblock metadata_uuid doesn't match metadata uuid of fs_devices: %pU != %pU", + fs_info->super_copy->metadata_uuid, + fs_info->fs_devices->metadata_uuid); + ret = -EINVAL; + } + if (memcmp(fs_info->fs_devices->metadata_uuid, sb->dev_item.fsid, BTRFS_FSID_SIZE) != 0) { btrfs_err(fs_info, @@ -2837,14 +2855,6 @@ int open_ctree(struct super_block *sb,

disk_super = fs_info->super_copy;

- ASSERT(!memcmp(fs_info->fs_devices->fsid, fs_info->super_copy->fsid, - BTRFS_FSID_SIZE)); - - if (btrfs_fs_incompat(fs_info, METADATA_UUID)) { - ASSERT(!memcmp(fs_info->fs_devices->metadata_uuid, - fs_info->super_copy->metadata_uuid, - BTRFS_FSID_SIZE)); - }

features = btrfs_super_flags(disk_super); if (features & BTRFS_SUPER_FLAG_CHANGING_FSID_V2) {

From: Maciej Żenczykowski maze@google.com

commit 3370139745853f7826895293e8ac3aec1430508e upstream.

[ 190.544755] configfs-gadget gadget: notify speed -44967296

This is because 4250000000 - 2**32 is -44967296.

Fixes: 9f6ce4240a2b ("usb: gadget: f_ncm.c added") Cc: Brooke Basile brookebasile@gmail.com Cc: Bryan O'Donoghue bryan.odonoghue@linaro.org Cc: Felipe Balbi balbi@kernel.org Cc: Lorenzo Colitti lorenzo@google.com Cc: Yauheni Kaliuta yauheni.kaliuta@nokia.com Cc: Linux USB Mailing List linux-usb@vger.kernel.org Acked-By: Lorenzo Colitti lorenzo@google.com Signed-off-by: Maciej Żenczykowski maze@google.com Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20210608005344.3762668-1-zenczykowski@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/gadget/function/f_ncm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/gadget/function/f_ncm.c +++ b/drivers/usb/gadget/function/f_ncm.c @@ -583,7 +583,7 @@ static void ncm_do_notify(struct f_ncm * data[0] = cpu_to_le32(ncm_bitrate(cdev->gadget)); data[1] = data[0];

- DBG(cdev, "notify speed %d\n", ncm_bitrate(cdev->gadget)); + DBG(cdev, "notify speed %u\n", ncm_bitrate(cdev->gadget)); ncm->notify_state = NCM_NOTIFY_CONNECT; break; }

From: Kyle Tso kyletso@google.com

commit 6490fa565534fa83593278267785a694fd378a2b upstream.

Current timer PD_T_SINK_WAIT_CAP is set to 240ms which will violate the SinkWaitCapTimer (tTypeCSinkWaitCap 310 - 620 ms) defined in the PD Spec if the port is faster enough when running the state machine. Set it to the lower bound 310ms to ensure the timeout is in Spec.

Fixes: f0690a25a140 ("staging: typec: USB Type-C Port Manager (tcpm)") Cc: stable stable@vger.kernel.org Reviewed-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Kyle Tso kyletso@google.com Link: https://lore.kernel.org/r/20210528081613.730661-1-kyletso@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- include/linux/usb/pd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/usb/pd.h +++ b/include/linux/usb/pd.h @@ -425,7 +425,7 @@ static inline unsigned int rdo_max_power #define PD_T_SENDER_RESPONSE 60 /* 24 - 30 ms, relaxed */ #define PD_T_SOURCE_ACTIVITY 45 #define PD_T_SINK_ACTIVITY 135 -#define PD_T_SINK_WAIT_CAP 240 +#define PD_T_SINK_WAIT_CAP 310 /* 310 - 620 ms */ #define PD_T_PS_TRANSITION 500 #define PD_T_SRC_TRANSITION 35 #define PD_T_DRP_SNK 40

From: Marian-Cristian Rotariu marian.c.rotariu@gmail.com

commit d00889080ab60051627dab1d85831cd9db750e2a upstream.

There is no validation of the index from dwc3_wIndex_to_dep() and we might be referring a non-existing ep and trigger a NULL pointer exception. In certain configurations we might use fewer eps and the index might wrongly indicate a larger ep index than existing.

By adding this validation from the patch we can actually report a wrong index back to the caller.

In our usecase we are using a composite device on an older kernel, but upstream might use this fix also. Unfortunately, I cannot describe the hardware for others to reproduce the issue as it is a proprietary implementation.

[ 82.958261] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000a4 [ 82.966891] Mem abort info: [ 82.969663] ESR = 0x96000006 [ 82.972703] Exception class = DABT (current EL), IL = 32 bits [ 82.978603] SET = 0, FnV = 0 [ 82.981642] EA = 0, S1PTW = 0 [ 82.984765] Data abort info: [ 82.987631] ISV = 0, ISS = 0x00000006 [ 82.991449] CM = 0, WnR = 0 [ 82.994409] user pgtable: 4k pages, 39-bit VAs, pgdp = 00000000c6210ccc [ 83.000999] [00000000000000a4] pgd=0000000053aa5003, pud=0000000053aa5003, pmd=0000000000000000 [ 83.009685] Internal error: Oops: 96000006 [#1] PREEMPT SMP [ 83.026433] Process irq/62-dwc3 (pid: 303, stack limit = 0x000000003985154c) [ 83.033470] CPU: 0 PID: 303 Comm: irq/62-dwc3 Not tainted 4.19.124 #1 [ 83.044836] pstate: 60000085 (nZCv daIf -PAN -UAO) [ 83.049628] pc : dwc3_ep0_handle_feature+0x414/0x43c [ 83.054558] lr : dwc3_ep0_interrupt+0x3b4/0xc94

...

[ 83.141788] Call trace: [ 83.144227] dwc3_ep0_handle_feature+0x414/0x43c [ 83.148823] dwc3_ep0_interrupt+0x3b4/0xc94 [ 83.181546] ---[ end trace aac6b5267d84c32f ]---

Signed-off-by: Marian-Cristian Rotariu marian.c.rotariu@gmail.com Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20210608162650.58426-1-marian.c.rotariu@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/dwc3/ep0.c | 3 +++ 1 file changed, 3 insertions(+)

--- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -292,6 +292,9 @@ static struct dwc3_ep *dwc3_wIndex_to_de epnum |= 1;

dep = dwc->eps[epnum]; + if (dep == NULL) + return NULL; + if (dep->flags & DWC3_EP_ENABLED) return dep;

From: Andy Shevchenko andriy.shevchenko@linux.intel.com

commit d5ab95da2a41567440097c277c5771ad13928dad upstream.

As LKP noticed the Sparse is not happy about strict type handling: .../typec/tcpm/wcove.c:380:50: sparse: expected unsigned short [usertype] header .../typec/tcpm/wcove.c:380:50: sparse: got restricted __le16 const [usertype] header

Fix this by switching to use pd_header_cnt_le() instead of pd_header_cnt() in the affected code.

Fixes: ae8a2ca8a221 ("usb: typec: Group all TCPCI/TCPM code together") Fixes: 3c4fb9f16921 ("usb: typec: wcove: start using tcpm for USB PD support") Reported-by: kernel test robot lkp@intel.com Reviewed-by: Heikki Krogerus heikki.krogerus@linux.intel.com Reviewed-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Link: https://lore.kernel.org/r/20210609172202.83377-1-andriy.shevchenko@linux.int... Cc: stable stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/typec/tcpm/wcove.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/typec/tcpm/wcove.c +++ b/drivers/usb/typec/tcpm/wcove.c @@ -377,7 +377,7 @@ static int wcove_pd_transmit(struct tcpc const u8 *data = (void *)msg; int i;

- for (i = 0; i < pd_header_cnt(msg->header) * 4 + 2; i++) { + for (i = 0; i < pd_header_cnt_le(msg->header) * 4 + 2; i++) { ret = regmap_write(wcove->regmap, USBC_TX_DATA + i, data[i]); if (ret)

From: Wesley Cheng wcheng@codeaurora.org

commit 6fc1db5e6211e30fbb1cee8d7925d79d4ed2ae14 upstream.

During unbind, ffs_func_eps_disable() will be executed, resulting in completion callbacks for any pending USB requests. When using AIO, irrespective of the completion status, io_data work is queued to io_completion_wq to evaluate and handle the completed requests. Since work runs asynchronously to the unbind() routine, there can be a scenario where the work runs after the USB gadget has been fully removed, resulting in accessing of a resource which has been already freed. (i.e. usb_ep_free_request() accessing the USB ep structure)

Explicitly drain the io_completion_wq, instead of relying on the destroy_workqueue() (in ffs_data_put()) to make sure no pending completion work items are running.

Signed-off-by: Wesley Cheng wcheng@codeaurora.org Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/1621644261-1236-1-git-send-email-wcheng@codeaurora... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/gadget/function/f_fs.c | 3 +++ 1 file changed, 3 insertions(+)

--- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -3585,6 +3585,9 @@ static void ffs_func_unbind(struct usb_c ffs->func = NULL; }

+ /* Drain any pending AIO completions */ + drain_workqueue(ffs->io_completion_wq); + if (!--opts->refcnt) functionfs_unbind(ffs);

From: Alexandre GRIVEAUX agriveaux@deutnet.info

commit fc0b3dc9a11771c3919eaaaf9d649138b095aa0f upstream.

Add device id for Zyxel Omni 56K Plus modem, this modem include:

USB chip: NetChip NET2888

Main chip: 901041A F721501APGF

Another modem using the same chips is the Zyxel Omni 56K DUO/NEO, could be added with the right USB ID.

Signed-off-by: Alexandre GRIVEAUX agriveaux@deutnet.info Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold johan@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/serial/omninet.c | 2 ++ 1 file changed, 2 insertions(+)

--- a/drivers/usb/serial/omninet.c +++ b/drivers/usb/serial/omninet.c @@ -26,6 +26,7 @@

#define ZYXEL_VENDOR_ID 0x0586 #define ZYXEL_OMNINET_ID 0x1000 +#define ZYXEL_OMNI_56K_PLUS_ID 0x1500 /* This one seems to be a re-branded ZyXEL device */ #define BT_IGNITIONPRO_ID 0x2000

@@ -40,6 +41,7 @@ static int omninet_port_remove(struct us

static const struct usb_device_id id_table[] = { { USB_DEVICE(ZYXEL_VENDOR_ID, ZYXEL_OMNINET_ID) }, + { USB_DEVICE(ZYXEL_VENDOR_ID, ZYXEL_OMNI_56K_PLUS_ID) }, { USB_DEVICE(ZYXEL_VENDOR_ID, BT_IGNITIONPRO_ID) }, { } /* Terminating entry */ };

From: Stefan Agner stefan@agner.ch

commit 6f7ec77cc8b64ff5037c1945e4650c65c458037d upstream.

The QFN20 part has a different GPIO/port function assignment. The configuration struct bit field ordered as TX/RX/RS485/WAKEUP/CLK which exactly matches GPIO0-3 for QFN24/28. However, QFN20 has a different GPIO to primary function assignment.

Special case QFN20 to follow to properly detect which GPIOs are available.

Signed-off-by: Stefan Agner stefan@agner.ch Link: https://lore.kernel.org/r/51830b2b24118eb0f77c5c9ac64ffb2f519dbb1d.162221830... Fixes: c8acfe0aadbe ("USB: serial: cp210x: implement GPIO support for CP2102N") Cc: stable@vger.kernel.org # 4.19 Signed-off-by: Johan Hovold johan@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/serial/cp210x.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-)

--- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -507,6 +507,12 @@ struct cp210x_single_port_config { #define CP210X_2NCONFIG_GPIO_RSTLATCH_IDX 587 #define CP210X_2NCONFIG_GPIO_CONTROL_IDX 600

+/* CP2102N QFN20 port configuration values */ +#define CP2102N_QFN20_GPIO2_TXLED_MODE BIT(2) +#define CP2102N_QFN20_GPIO3_RXLED_MODE BIT(3) +#define CP2102N_QFN20_GPIO1_RS485_MODE BIT(4) +#define CP2102N_QFN20_GPIO0_CLK_MODE BIT(6) + /* CP210X_VENDOR_SPECIFIC, CP210X_WRITE_LATCH call writes these 0x2 bytes. */ struct cp210x_gpio_write { u8 mask; @@ -1691,7 +1697,19 @@ static int cp2102n_gpioconf_init(struct priv->gpio_pushpull = (gpio_pushpull >> 3) & 0x0f;

/* 0 indicates GPIO mode, 1 is alternate function */ - priv->gpio_altfunc = (gpio_ctrl >> 2) & 0x0f; + if (priv->partnum == CP210X_PARTNUM_CP2102N_QFN20) { + /* QFN20 is special... */ + if (gpio_ctrl & CP2102N_QFN20_GPIO0_CLK_MODE) /* GPIO 0 */ + priv->gpio_altfunc |= BIT(0); + if (gpio_ctrl & CP2102N_QFN20_GPIO1_RS485_MODE) /* GPIO 1 */ + priv->gpio_altfunc |= BIT(1); + if (gpio_ctrl & CP2102N_QFN20_GPIO2_TXLED_MODE) /* GPIO 2 */ + priv->gpio_altfunc |= BIT(2); + if (gpio_ctrl & CP2102N_QFN20_GPIO3_RXLED_MODE) /* GPIO 3 */ + priv->gpio_altfunc |= BIT(3); + } else { + priv->gpio_altfunc = (gpio_ctrl >> 2) & 0x0f; + }

if (priv->partnum == CP210X_PARTNUM_CP2102N_QFN28) { /*

From: Maciej Żenczykowski maze@google.com

commit 90c4d05780d47e14a50e11a7f17373104cd47d25 upstream.

This avoids a null pointer dereference in f_{ecm,eem,hid,loopback,printer,rndis,serial,sourcesink,subset,tcm} by simply reusing the 5gbps config for 10gbps.

Fixes: eaef50c76057 ("usb: gadget: Update usb_assign_descriptors for SuperSpeedPlus") Cc: Christophe JAILLET christophe.jaillet@wanadoo.fr Cc: Felipe Balbi balbi@kernel.org Cc: Gustavo A. R. Silva gustavoars@kernel.org Cc: Lorenzo Colitti lorenzo@google.com Cc: Martin K. Petersen martin.petersen@oracle.com Cc: Michael R Sweet msweet@msweet.org Cc: Mike Christie michael.christie@oracle.com Cc: Pawel Laszczak pawell@cadence.com Cc: Peter Chen peter.chen@nxp.com Cc: Sudhakar Panneerselvam sudhakar.panneerselvam@oracle.com Cc: Wei Ming Chen jj251510319013@gmail.com Cc: Will McVicker willmcvicker@google.com Cc: Zqiang qiang.zhang@windriver.com Reviewed-By: Lorenzo Colitti lorenzo@google.com Cc: stable stable@vger.kernel.org Signed-off-by: Maciej Żenczykowski maze@google.com Link: https://lore.kernel.org/r/20210608044141.3898496-1-zenczykowski@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/gadget/function/f_ecm.c | 2 +- drivers/usb/gadget/function/f_eem.c | 2 +- drivers/usb/gadget/function/f_hid.c | 3 ++- drivers/usb/gadget/function/f_loopback.c | 2 +- drivers/usb/gadget/function/f_printer.c | 3 ++- drivers/usb/gadget/function/f_rndis.c | 2 +- drivers/usb/gadget/function/f_serial.c | 2 +- drivers/usb/gadget/function/f_sourcesink.c | 3 ++- drivers/usb/gadget/function/f_subset.c | 2 +- drivers/usb/gadget/function/f_tcm.c | 3 ++- 10 files changed, 14 insertions(+), 10 deletions(-)

--- a/drivers/usb/gadget/function/f_ecm.c +++ b/drivers/usb/gadget/function/f_ecm.c @@ -791,7 +791,7 @@ ecm_bind(struct usb_configuration *c, st fs_ecm_notify_desc.bEndpointAddress;

status = usb_assign_descriptors(f, ecm_fs_function, ecm_hs_function, - ecm_ss_function, NULL); + ecm_ss_function, ecm_ss_function); if (status) goto fail;

--- a/drivers/usb/gadget/function/f_eem.c +++ b/drivers/usb/gadget/function/f_eem.c @@ -304,7 +304,7 @@ static int eem_bind(struct usb_configura eem_ss_out_desc.bEndpointAddress = eem_fs_out_desc.bEndpointAddress;

status = usb_assign_descriptors(f, eem_fs_function, eem_hs_function, - eem_ss_function, NULL); + eem_ss_function, eem_ss_function); if (status) goto fail;

--- a/drivers/usb/gadget/function/f_hid.c +++ b/drivers/usb/gadget/function/f_hid.c @@ -808,7 +808,8 @@ static int hidg_bind(struct usb_configur hidg_fs_out_ep_desc.bEndpointAddress;

status = usb_assign_descriptors(f, hidg_fs_descriptors, - hidg_hs_descriptors, hidg_ss_descriptors, NULL); + hidg_hs_descriptors, hidg_ss_descriptors, + hidg_ss_descriptors); if (status) goto fail;

--- a/drivers/usb/gadget/function/f_loopback.c +++ b/drivers/usb/gadget/function/f_loopback.c @@ -207,7 +207,7 @@ autoconf_fail: ss_loop_sink_desc.bEndpointAddress = fs_loop_sink_desc.bEndpointAddress;

ret = usb_assign_descriptors(f, fs_loopback_descs, hs_loopback_descs, - ss_loopback_descs, NULL); + ss_loopback_descs, ss_loopback_descs); if (ret) return ret;

--- a/drivers/usb/gadget/function/f_printer.c +++ b/drivers/usb/gadget/function/f_printer.c @@ -1063,7 +1063,8 @@ autoconf_fail: ss_ep_out_desc.bEndpointAddress = fs_ep_out_desc.bEndpointAddress;

ret = usb_assign_descriptors(f, fs_printer_function, - hs_printer_function, ss_printer_function, NULL); + hs_printer_function, ss_printer_function, + ss_printer_function); if (ret) return ret;

--- a/drivers/usb/gadget/function/f_rndis.c +++ b/drivers/usb/gadget/function/f_rndis.c @@ -789,7 +789,7 @@ rndis_bind(struct usb_configuration *c, ss_notify_desc.bEndpointAddress = fs_notify_desc.bEndpointAddress;

status = usb_assign_descriptors(f, eth_fs_function, eth_hs_function, - eth_ss_function, NULL); + eth_ss_function, eth_ss_function); if (status) goto fail;

--- a/drivers/usb/gadget/function/f_serial.c +++ b/drivers/usb/gadget/function/f_serial.c @@ -233,7 +233,7 @@ static int gser_bind(struct usb_configur gser_ss_out_desc.bEndpointAddress = gser_fs_out_desc.bEndpointAddress;

status = usb_assign_descriptors(f, gser_fs_function, gser_hs_function, - gser_ss_function, NULL); + gser_ss_function, gser_ss_function); if (status) goto fail; dev_dbg(&cdev->gadget->dev, "generic ttyGS%d: %s speed IN/%s OUT/%s\n", --- a/drivers/usb/gadget/function/f_sourcesink.c +++ b/drivers/usb/gadget/function/f_sourcesink.c @@ -431,7 +431,8 @@ no_iso: ss_iso_sink_desc.bEndpointAddress = fs_iso_sink_desc.bEndpointAddress;

ret = usb_assign_descriptors(f, fs_source_sink_descs, - hs_source_sink_descs, ss_source_sink_descs, NULL); + hs_source_sink_descs, ss_source_sink_descs, + ss_source_sink_descs); if (ret) return ret;

--- a/drivers/usb/gadget/function/f_subset.c +++ b/drivers/usb/gadget/function/f_subset.c @@ -358,7 +358,7 @@ geth_bind(struct usb_configuration *c, s fs_subset_out_desc.bEndpointAddress;

status = usb_assign_descriptors(f, fs_eth_function, hs_eth_function, - ss_eth_function, NULL); + ss_eth_function, ss_eth_function); if (status) goto fail;

--- a/drivers/usb/gadget/function/f_tcm.c +++ b/drivers/usb/gadget/function/f_tcm.c @@ -2056,7 +2056,8 @@ static int tcm_bind(struct usb_configura uasp_fs_cmd_desc.bEndpointAddress = uasp_ss_cmd_desc.bEndpointAddress;

ret = usb_assign_descriptors(f, uasp_fs_function_desc, - uasp_hs_function_desc, uasp_ss_function_desc, NULL); + uasp_hs_function_desc, uasp_ss_function_desc, + uasp_ss_function_desc); if (ret) goto ep_fail;

From: Dmitry Baryshkov dmitry.baryshkov@linaro.org

commit 98e48cd9283dbac0e1445ee780889f10b3d1db6a upstream.

For the boot-on/always-on regulators the set_machine_constrainst() is called before resolving rdev->supply. Thus the code would try to enable rdev before enabling supplying regulator. Enforce resolving supply regulator before enabling rdev.

Fixes: aea6cb99703e ("regulator: resolve supply after creating regulator") Signed-off-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Link: https://lore.kernel.org/r/20210519221224.2868496-1-dmitry.baryshkov@linaro.o... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/regulator/core.c | 6 ++++++ 1 file changed, 6 insertions(+)

--- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1381,6 +1381,12 @@ static int set_machine_constraints(struc * and we have control then make sure it is enabled. */ if (rdev->constraints->always_on || rdev->constraints->boot_on) { + /* If we want to enable this regulator, make sure that we know + * the supplying regulator. + */ + if (rdev->supply_name && !rdev->supply) + return -EPROBE_DEFER; + if (rdev->supply) { ret = regulator_enable(rdev->supply); if (ret < 0) {

From: Bjorn Andersson bjorn.andersson@linaro.org

commit 142d0b24c1b17139f1aaaacae7542a38aa85640f upstream.

Fix the copy-paste mistake in the return path of typec_mux_match(), where dev is considered a member of struct typec_switch rather than struct typec_mux.

The two structs are identical in regards to having the struct device as the first entry, so this provides no functional change.

Fixes: 3370db35193b ("usb: typec: Registering real device entries for the muxes") Reviewed-by: Heikki Krogerus heikki.krogerus@linux.intel.com Signed-off-by: Bjorn Andersson bjorn.andersson@linaro.org Link: https://lore.kernel.org/r/20210610002132.3088083-1-bjorn.andersson@linaro.or... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/typec/mux.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/typec/mux.c +++ b/drivers/usb/typec/mux.c @@ -243,7 +243,7 @@ find_mux: dev = class_find_device(&typec_mux_class, NULL, con->fwnode, mux_fwnode_match);

- return dev ? to_typec_switch(dev) : ERR_PTR(-EPROBE_DEFER); + return dev ? to_typec_mux(dev) : ERR_PTR(-EPROBE_DEFER); }

/**

From: Shay Drory shayd@nvidia.com

commit 404e5a12691fe797486475fe28cc0b80cb8bef2c upstream.

Currently when mlx4 maps the hca_core_clock page to the user space there are read-modifiable registers, one of which is semaphore, on this page as well as the clock counter. If user reads the wrong offset, it can modify the semaphore and hang the device.

Do not map the hca_core_clock page to the user space unless the device has been put in a backwards compatibility mode to support this feature.

After this patch, mlx4 core_clock won't be mapped to user space on the majority of existing devices and the uverbs device time feature in ibv_query_rt_values_ex() will be disabled.

Fixes: 52033cfb5aab ("IB/mlx4: Add mmap call to map the hardware clock") Link: https://lore.kernel.org/r/9632304e0d6790af84b3b706d8c18732bc0d5e27.162272630... Signed-off-by: Shay Drory shayd@nvidia.com Signed-off-by: Leon Romanovsky leonro@nvidia.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/infiniband/hw/mlx4/main.c | 5 +---- drivers/net/ethernet/mellanox/mlx4/fw.c | 3 +++ drivers/net/ethernet/mellanox/mlx4/fw.h | 1 + drivers/net/ethernet/mellanox/mlx4/main.c | 6 ++++++ include/linux/mlx4/device.h | 1 + 5 files changed, 12 insertions(+), 4 deletions(-)

--- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -577,12 +577,9 @@ static int mlx4_ib_query_device(struct i props->cq_caps.max_cq_moderation_count = MLX4_MAX_CQ_COUNT; props->cq_caps.max_cq_moderation_period = MLX4_MAX_CQ_PERIOD;

- if (!mlx4_is_slave(dev->dev)) - err = mlx4_get_internal_clock_params(dev->dev, &clock_params); - if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) { resp.response_length += sizeof(resp.hca_core_clock_offset); - if (!err && !mlx4_is_slave(dev->dev)) { + if (!mlx4_get_internal_clock_params(dev->dev, &clock_params)) { resp.comp_mask |= MLX4_IB_QUERY_DEV_RESP_MASK_CORE_CLOCK_OFFSET; resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE; } --- a/drivers/net/ethernet/mellanox/mlx4/fw.c +++ b/drivers/net/ethernet/mellanox/mlx4/fw.c @@ -823,6 +823,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev * #define QUERY_DEV_CAP_MAD_DEMUX_OFFSET 0xb0 #define QUERY_DEV_CAP_DMFS_HIGH_RATE_QPN_BASE_OFFSET 0xa8 #define QUERY_DEV_CAP_DMFS_HIGH_RATE_QPN_RANGE_OFFSET 0xac +#define QUERY_DEV_CAP_MAP_CLOCK_TO_USER 0xc1 #define QUERY_DEV_CAP_QP_RATE_LIMIT_NUM_OFFSET 0xcc #define QUERY_DEV_CAP_QP_RATE_LIMIT_MAX_OFFSET 0xd0 #define QUERY_DEV_CAP_QP_RATE_LIMIT_MIN_OFFSET 0xd2 @@ -841,6 +842,8 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *

if (mlx4_is_mfunc(dev)) disable_unsupported_roce_caps(outbox); + MLX4_GET(field, outbox, QUERY_DEV_CAP_MAP_CLOCK_TO_USER); + dev_cap->map_clock_to_user = field & 0x80; MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_QP_OFFSET); dev_cap->reserved_qps = 1 << (field & 0xf); MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_QP_OFFSET); --- a/drivers/net/ethernet/mellanox/mlx4/fw.h +++ b/drivers/net/ethernet/mellanox/mlx4/fw.h @@ -131,6 +131,7 @@ struct mlx4_dev_cap { u32 health_buffer_addrs; struct mlx4_port_cap port_cap[MLX4_MAX_PORTS + 1]; bool wol_port[MLX4_MAX_PORTS + 1]; + bool map_clock_to_user; };

struct mlx4_func_cap { --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -498,6 +498,7 @@ static int mlx4_dev_cap(struct mlx4_dev } }

+ dev->caps.map_clock_to_user = dev_cap->map_clock_to_user; dev->caps.uar_page_size = PAGE_SIZE; dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE; dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay; @@ -1948,6 +1949,11 @@ int mlx4_get_internal_clock_params(struc if (mlx4_is_slave(dev)) return -EOPNOTSUPP;

+ if (!dev->caps.map_clock_to_user) { + mlx4_dbg(dev, "Map clock to user is not supported.\n"); + return -EOPNOTSUPP; + } + if (!params) return -EINVAL;

--- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -632,6 +632,7 @@ struct mlx4_caps { bool wol_port[MLX4_MAX_PORTS + 1]; struct mlx4_rate_limit_caps rl_caps; u32 health_buffer_addrs; + bool map_clock_to_user; };

struct mlx4_buf_list {

From: Marco Elver elver@google.com

commit 6c605f8371159432ec61cbb1488dcf7ad24ad19a upstream.

KCSAN reports a data race between increment and decrement of pin_count:

write to 0xffff888237c2d4e0 of 4 bytes by task 15740 on cpu 1: find_get_context kernel/events/core.c:4617 __do_sys_perf_event_open kernel/events/core.c:12097 [inline] __se_sys_perf_event_open kernel/events/core.c:11933 ... read to 0xffff888237c2d4e0 of 4 bytes by task 15743 on cpu 0: perf_unpin_context kernel/events/core.c:1525 [inline] __do_sys_perf_event_open kernel/events/core.c:12328 [inline] __se_sys_perf_event_open kernel/events/core.c:11933 ...

Because neither read-modify-write here is atomic, this can lead to one of the operations being lost, resulting in an inconsistent pin_count. Fix it by adding the missing locking in the CPU-event case.

Fixes: fe4b04fa31a6 ("perf: Cure task_oncpu_function_call() races") Reported-by: syzbot+142c9018f5962db69c7e@syzkaller.appspotmail.com Signed-off-by: Marco Elver elver@google.com Signed-off-by: Peter Zijlstra (Intel) peterz@infradead.org Link: https://lkml.kernel.org/r/20210527104711.2671610-1-elver@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- kernel/events/core.c | 2 ++ 1 file changed, 2 insertions(+)

--- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -4249,7 +4249,9 @@ find_get_context(struct pmu *pmu, struct cpuctx = per_cpu_ptr(pmu->pmu_cpu_context, cpu); ctx = &cpuctx->ctx; get_ctx(ctx); + raw_spin_lock_irqsave(&ctx->lock, flags); ++ctx->pin_count; + raw_spin_unlock_irqrestore(&ctx->lock, flags);

return ctx; }

From: Sean Christopherson seanjc@google.com

commit f31500b0d437a2464ca5972d8f5439e156b74960 upstream.

Use the __string() machinery provided by the tracing subystem to make a copy of the string literals consumed by the "nested VM-Enter failed" tracepoint. A complete copy is necessary to ensure that the tracepoint can't outlive the data/memory it consumes and deference stale memory.

Because the tracepoint itself is defined by kvm, if kvm-intel and/or kvm-amd are built as modules, the memory holding the string literals defined by the vendor modules will be freed when the module is unloaded, whereas the tracepoint and its data in the ring buffer will live until kvm is unloaded (or "indefinitely" if kvm is built-in).

This bug has existed since the tracepoint was added, but was recently exposed by a new check in tracing to detect exactly this type of bug.

fmt: '%s%s ' current_buffer: ' vmx_dirty_log_t-140127 [003] .... kvm_nested_vmenter_failed: ' WARNING: CPU: 3 PID: 140134 at kernel/trace/trace.c:3759 trace_check_vprintf+0x3be/0x3e0 CPU: 3 PID: 140134 Comm: less Not tainted 5.13.0-rc1-ce2e73ce600a-req #184 Hardware name: ASUS Q87M-E/Q87M-E, BIOS 1102 03/03/2014 RIP: 0010:trace_check_vprintf+0x3be/0x3e0 Code: <0f> 0b 44 8b 4c 24 1c e9 a9 fe ff ff c6 44 02 ff 00 49 8b 97 b0 20 RSP: 0018:ffffa895cc37bcb0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffa895cc37bd08 RCX: 0000000000000027 RDX: 0000000000000027 RSI: 00000000ffffdfff RDI: ffff9766cfad74f8 RBP: ffffffffc0a041d4 R08: ffff9766cfad74f0 R09: ffffa895cc37bad8 R10: 0000000000000001 R11: 0000000000000001 R12: ffffffffc0a041d4 R13: ffffffffc0f4dba8 R14: 0000000000000000 R15: ffff976409f2c000 FS: 00007f92fa200740(0000) GS:ffff9766cfac0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000559bd11b0000 CR3: 000000019fbaa002 CR4: 00000000001726e0 Call Trace: trace_event_printf+0x5e/0x80 trace_raw_output_kvm_nested_vmenter_failed+0x3a/0x60 [kvm] print_trace_line+0x1dd/0x4e0 s_show+0x45/0x150 seq_read_iter+0x2d5/0x4c0 seq_read+0x106/0x150 vfs_read+0x98/0x180 ksys_read+0x5f/0xe0 do_syscall_64+0x40/0xb0 entry_SYSCALL_64_after_hwframe+0x44/0xae

Cc: Steven Rostedt rostedt@goodmis.org Fixes: 380e0055bc7e ("KVM: nVMX: trace nested VM-Enter failures detected by H/W") Signed-off-by: Sean Christopherson seanjc@google.com Reviewed-by: Steven Rostedt (VMware) rostedt@goodmis.org Message-Id: 20210607175748.674002-1-seanjc@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/x86/kvm/trace.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/arch/x86/kvm/trace.h +++ b/arch/x86/kvm/trace.h @@ -1483,16 +1483,16 @@ TRACE_EVENT(kvm_nested_vmenter_failed, TP_ARGS(msg, err),

TP_STRUCT__entry( - __field(const char *, msg) + __string(msg, msg) __field(u32, err) ),

TP_fast_assign( - __entry->msg = msg; + __assign_str(msg, msg); __entry->err = err; ),

- TP_printk("%s%s", __entry->msg, !__entry->err ? "" : + TP_printk("%s%s", __get_str(msg), !__entry->err ? "" : __print_symbolic(__entry->err, VMX_VMENTER_INSTRUCTION_ERRORS)) );

From: Dan Carpenter dan.carpenter@oracle.com

[ Upstream commit 09226e8303beeec10f2ff844d2e46d1371dc58e0 ]

None of the callers are expecting NULL returns from nfs_get_client() so this code will lead to an Oops. It's better to return an error pointer. I expect that this is dead code so hopefully no one is affected.

Fixes: 31434f496abb ("nfs: check hostname in nfs_get_client") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Trond Myklebust trond.myklebust@hammerspace.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/nfs/client.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nfs/client.c b/fs/nfs/client.c index a05f77f9c21e..af838d1ed281 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -399,7 +399,7 @@ struct nfs_client *nfs_get_client(const struct nfs_client_initdata *cl_init)

if (cl_init->hostname == NULL) { WARN_ON(1); - return NULL; + return ERR_PTR(-EINVAL); }

/* see if the client already exists */

From: Leo Yan leo.yan@linaro.org

[ Upstream commit 197eecb6ecae0b04bd694432f640ff75597fed9c ]

When peeking an event, it has a short path and a long path. The short path uses the session pointer "one_mmap_addr" to directly fetch the event; and the long path needs to read out the event header and the following event data from file and fill into the buffer pointer passed through the argument "buf".

The issue is in the long path that it copies the event header and event data into the same destination address which pointer "buf", this means the event header is overwritten. We are just lucky to run into the short path in most cases, so we don't hit the issue in the long path.

This patch adds the offset "hdr_sz" to the pointer "buf" when copying the event data, so that it can reserve the event header which can be used properly by its caller.

Fixes: 5a52f33adf02 ("perf session: Add perf_session__peek_event()") Signed-off-by: Leo Yan leo.yan@linaro.org Acked-by: Adrian Hunter adrian.hunter@intel.com Acked-by: Jiri Olsa jolsa@redhat.com Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Kan Liang kan.liang@linux.intel.com Cc: Mark Rutland mark.rutland@arm.com Cc: Namhyung Kim namhyung@kernel.org Cc: Peter Zijlstra peterz@infradead.org Link: http://lore.kernel.org/lkml/20210605052957.1070720-1-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/util/session.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 56f3039fe2a7..8ff2c98e9032 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1631,6 +1631,7 @@ int perf_session__peek_event(struct perf_session *session, off_t file_offset, if (event->header.size < hdr_sz || event->header.size > buf_sz) return -1;

+ buf += hdr_sz; rest = event->header.size - hdr_sz;

if (readn(fd, buf, rest) != (ssize_t)rest)

From: Anna Schumaker Anna.Schumaker@Netapp.com

commit 476bdb04c501fc64bf3b8464ffddefc8dbe01577 upstream.

KASAN reports a use-after-free when attempting to mount two different exports through two different NICs that belong to the same server.

Olga was able to hit this with kernels starting somewhere between 5.7 and 5.10, but I traced the patch that introduced the clear_bit() call to 4.13. So something must have changed in the refcounting of the clp pointer to make this call to nfs_put_client() the very last one.

Fixes: 8dcbec6d20 ("NFSv41: Handle EXCHID4_FLAG_CONFIRMED_R during NFSv4.1 migration") Cc: stable@vger.kernel.org # 4.13+ Signed-off-by: Anna Schumaker Anna.Schumaker@Netapp.com Signed-off-by: Trond Myklebust trond.myklebust@hammerspace.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/nfs/nfs4client.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -435,8 +435,8 @@ struct nfs_client *nfs4_init_client(stru */ nfs_mark_client_ready(clp, -EPERM); } - nfs_put_client(clp); clear_bit(NFS_CS_TSM_POSSIBLE, &clp->cl_flags); + nfs_put_client(clp); return old;

error:

From: Dai Ngo dai.ngo@oracle.com

commit f8849e206ef52b584cd9227255f4724f0cc900bb upstream.

Currently if __nfs4_proc_set_acl fails with NFS4ERR_BADOWNER it re-enables the idmapper by clearing NFS_CAP_UIDGID_NOMAP before retrying again. The NFS_CAP_UIDGID_NOMAP remains cleared even if the retry fails. This causes problem for subsequent setattr requests for v4 server that does not have idmapping configured.

This patch modifies nfs4_proc_set_acl to detect NFS4ERR_BADOWNER and NFS4ERR_BADNAME and skips the retry, since the kernel isn't involved in encoding the ACEs, and return -EINVAL.

Steps to reproduce the problem:

# mount -o vers=4.1,sec=sys server:/export/test /tmp/mnt # touch /tmp/mnt/file1 # chown 99 /tmp/mnt/file1 # nfs4_setfacl -a A::unknown.user@xyz.com:wrtncy /tmp/mnt/file1 Failed setxattr operation: Invalid argument # chown 99 /tmp/mnt/file1 chown: changing ownership of ‘/tmp/mnt/file1’: Invalid argument # umount /tmp/mnt # mount -o vers=4.1,sec=sys server:/export/test /tmp/mnt # chown 99 /tmp/mnt/file1 #

v2: detect NFS4ERR_BADOWNER and NFS4ERR_BADNAME and skip retry in nfs4_proc_set_acl. Signed-off-by: Dai Ngo dai.ngo@oracle.com Signed-off-by: Trond Myklebust trond.myklebust@hammerspace.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/nfs/nfs4proc.c | 8 ++++++++ 1 file changed, 8 insertions(+)

--- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -5799,6 +5799,14 @@ static int nfs4_proc_set_acl(struct inod do { err = __nfs4_proc_set_acl(inode, buf, buflen); trace_nfs4_set_acl(inode, err); + if (err == -NFS4ERR_BADOWNER || err == -NFS4ERR_BADNAME) { + /* + * no need to retry since the kernel + * isn't involved in encoding the ACEs. + */ + err = -EINVAL; + break; + } err = nfs4_handle_exception(NFS_SERVER(inode), err, &exception); } while (exception.retry);

From: Ming Lei ming.lei@redhat.com

commit 3719f4ff047e20062b8314c23ec3cab84d74c908 upstream.

When scsi_add_host_with_dma() returns failure, the caller will call scsi_host_put(shost) to release everything allocated for this host instance. Consequently we can't also free allocated stuff in scsi_add_host_with_dma(), otherwise we will end up with a double free.

Strictly speaking, host resource allocations should have been done in scsi_host_alloc(). However, the allocations may need information which is not yet provided by the driver when that function is called. So leave the allocations where they are but rely on host device's release handler to free resources.

Link: https://lore.kernel.org/r/20210602133029.2864069-3-ming.lei@redhat.com Cc: Bart Van Assche bvanassche@acm.org Cc: John Garry john.garry@huawei.com Cc: Hannes Reinecke hare@suse.de Tested-by: John Garry john.garry@huawei.com Reviewed-by: Bart Van Assche bvanassche@acm.org Reviewed-by: John Garry john.garry@huawei.com Reviewed-by: Hannes Reinecke hare@suse.de Signed-off-by: Ming Lei ming.lei@redhat.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/scsi/hosts.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-)

--- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -275,23 +275,22 @@ int scsi_add_host_with_dma(struct Scsi_H shost->work_q_name); if (!shost->work_q) { error = -EINVAL; - goto out_free_shost_data; + goto out_del_dev; } }

error = scsi_sysfs_add_host(shost); if (error) - goto out_destroy_host; + goto out_del_dev;

scsi_proc_host_add(shost); scsi_autopm_put_host(shost); return error;

- out_destroy_host: - if (shost->work_q) - destroy_workqueue(shost->work_q); - out_free_shost_data: - kfree(shost->shost_data); + /* + * Any host allocation in this function will be freed in + * scsi_host_dev_release(). + */ out_del_dev: device_del(&shost->shost_dev); out_del_gendev: @@ -301,7 +300,6 @@ int scsi_add_host_with_dma(struct Scsi_H pm_runtime_disable(&shost->shost_gendev); pm_runtime_set_suspended(&shost->shost_gendev); pm_runtime_put_noidle(&shost->shost_gendev); - scsi_mq_destroy_tags(shost); fail: return error; }

From: Ming Lei ming.lei@redhat.com

commit 1e0d4e6225996f05271de1ebcb1a7c9381af0b27 upstream.

get_device(shost->shost_gendev.parent) is called after host state has switched to SHOST_RUNNING. scsi_host_dev_release() shouldn't release the parent device if host state is still SHOST_CREATED.

Link: https://lore.kernel.org/r/20210602133029.2864069-5-ming.lei@redhat.com Cc: Bart Van Assche bvanassche@acm.org Cc: John Garry john.garry@huawei.com Cc: Hannes Reinecke hare@suse.de Tested-by: John Garry john.garry@huawei.com Reviewed-by: John Garry john.garry@huawei.com Signed-off-by: Ming Lei ming.lei@redhat.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/scsi/hosts.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -344,7 +344,7 @@ static void scsi_host_dev_release(struct

ida_simple_remove(&host_index_ida, shost->host_no);

- if (parent) + if (shost->shost_state != SHOST_CREATED) put_device(parent); kfree(shost); }

From: Liangyan liangyan.peng@linux.alibaba.com

commit 3e08a9f9760f4a70d633c328a76408e62d6f80a3 upstream.

We've suffered from severe kernel crashes due to memory corruption on our production environment, like,

Call Trace: [1640542.554277] general protection fault: 0000 [#1] SMP PTI [1640542.554856] CPU: 17 PID: 26996 Comm: python Kdump: loaded Tainted:G [1640542.556629] RIP: 0010:kmem_cache_alloc+0x90/0x190 [1640542.559074] RSP: 0018:ffffb16faa597df8 EFLAGS: 00010286 [1640542.559587] RAX: 0000000000000000 RBX: 0000000000400200 RCX: 0000000006e931bf [1640542.560323] RDX: 0000000006e931be RSI: 0000000000400200 RDI: ffff9a45ff004300 [1640542.560996] RBP: 0000000000400200 R08: 0000000000023420 R09: 0000000000000000 [1640542.561670] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff9a20608d [1640542.562366] R13: ffff9a45ff004300 R14: ffff9a45ff004300 R15: 696c662f65636976 [1640542.563128] FS: 00007f45d7c6f740(0000) GS:ffff9a45ff840000(0000) knlGS:0000000000000000 [1640542.563937] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [1640542.564557] CR2: 00007f45d71311a0 CR3: 000000189d63e004 CR4: 00000000003606e0 [1640542.565279] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [1640542.566069] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [1640542.566742] Call Trace: [1640542.567009] anon_vma_clone+0x5d/0x170 [1640542.567417] __split_vma+0x91/0x1a0 [1640542.567777] do_munmap+0x2c6/0x320 [1640542.568128] vm_munmap+0x54/0x70 [1640542.569990] __x64_sys_munmap+0x22/0x30 [1640542.572005] do_syscall_64+0x5b/0x1b0 [1640542.573724] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [1640542.575642] RIP: 0033:0x7f45d6e61e27

James Wang has reproduced it stably on the latest 4.19 LTS. After some debugging, we finally proved that it's due to ftrace buffer out-of-bound access using a debug tool as follows: [ 86.775200] BUG: Out-of-bounds write at addr 0xffff88aefe8b7000 [ 86.780806] no_context+0xdf/0x3c0 [ 86.784327] __do_page_fault+0x252/0x470 [ 86.788367] do_page_fault+0x32/0x140 [ 86.792145] page_fault+0x1e/0x30 [ 86.795576] strncpy_from_unsafe+0x66/0xb0 [ 86.799789] fetch_memory_string+0x25/0x40 [ 86.804002] fetch_deref_string+0x51/0x60 [ 86.808134] kprobe_trace_func+0x32d/0x3a0 [ 86.812347] kprobe_dispatcher+0x45/0x50 [ 86.816385] kprobe_ftrace_handler+0x90/0xf0 [ 86.820779] ftrace_ops_assist_func+0xa1/0x140 [ 86.825340] 0xffffffffc00750bf [ 86.828603] do_sys_open+0x5/0x1f0 [ 86.832124] do_syscall_64+0x5b/0x1b0 [ 86.835900] entry_SYSCALL_64_after_hwframe+0x44/0xa9

commit b220c049d519 ("tracing: Check length before giving out the filter buffer") adds length check to protect trace data overflow introduced in 0fc1b09ff1ff, seems that this fix can't prevent overflow entirely, the length check should also take the sizeof entry->array[0] into account, since this array[0] is filled the length of trace data and occupy addtional space and risk overflow.

Link: https://lkml.kernel.org/r/20210607125734.1770447-1-liangyan.peng@linux.aliba...

Cc: stable@vger.kernel.org Cc: Ingo Molnar mingo@redhat.com Cc: Xunlei Pang xlpang@linux.alibaba.com Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Fixes: b220c049d519 ("tracing: Check length before giving out the filter buffer") Reviewed-by: Xunlei Pang xlpang@linux.alibaba.com Reviewed-by: yinbinbin yinbinbin@alibabacloud.com Reviewed-by: Wetp Zhang wetp.zy@linux.alibaba.com Tested-by: James Wang jnwang@linux.alibaba.com Signed-off-by: Liangyan liangyan.peng@linux.alibaba.com Signed-off-by: Steven Rostedt (VMware) rostedt@goodmis.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- kernel/trace/trace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2487,7 +2487,7 @@ trace_event_buffer_lock_reserve(struct r (entry = this_cpu_read(trace_buffered_event))) { /* Try to use the per cpu buffer first */ val = this_cpu_inc_return(trace_buffered_event_cnt); - if ((len < (PAGE_SIZE - sizeof(*entry))) && val == 1) { + if ((len < (PAGE_SIZE - sizeof(*entry) - sizeof(entry->array[0]))) && val == 1) { trace_event_setup(entry, type, flags, pc); entry->array[0] = len; return entry;