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Patch "timers, sched_clock: Update timeout for clock wrap" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled timers, sched_clock: Update timeout for clock wrap to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: timers-sched_clock-update-timeout-for-clock-wrap.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: David Engraf <david.engraf(a)sysgo.com> Date: Fri, 17 Feb 2017 08:51:03 +0100 Subject: timers, sched_clock: Update timeout for clock wrap From: David Engraf <david.engraf(a)sysgo.com> [ Upstream commit 1b8955bc5ac575009835e371ae55e7f3af2197a9 ] The scheduler clock framework may not use the correct timeout for the clock wrap. This happens when a new clock driver calls sched_clock_register() after the kernel called sched_clock_postinit(). In this case the clock wrap timeout is too long thus sched_clock_poll() is called too late and the clock already wrapped. On my ARM system the scheduler was no longer scheduling any other task than the idle task because the sched_clock() wrapped. Signed-off-by: David Engraf <david.engraf(a)sysgo.com> Signed-off-by: John Stultz <john.stultz(a)linaro.org> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- kernel/time/sched_clock.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/kernel/time/sched_clock.c +++ b/kernel/time/sched_clock.c @@ -146,6 +146,11 @@ void __init sched_clock_register(u64 (*r cd.epoch_ns = ns; raw_write_seqcount_end(&cd.seq); + if (sched_clock_timer.function != NULL) { + /* update timeout for clock wrap */ + hrtimer_start(&sched_clock_timer, cd.wrap_kt, HRTIMER_MODE_REL); + } + r = rate; if (r >= 4000000) { r /= 1000000; Patches currently in stable-queue which might be from david.engraf(a)sysgo.com are queue-3.18/timers-sched_clock-update-timeout-for-clock-wrap.patch

7 years, 3 months

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Patch "spi: sun6i: disable/unprepare clocks on remove" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled spi: sun6i: disable/unprepare clocks on remove to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: spi-sun6i-disable-unprepare-clocks-on-remove.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Tobias Jordan <Tobias.Jordan(a)elektrobit.com> Date: Thu, 7 Dec 2017 15:04:53 +0100 Subject: spi: sun6i: disable/unprepare clocks on remove From: Tobias Jordan <Tobias.Jordan(a)elektrobit.com> [ Upstream commit 2d9bbd02c54094ceffa555143b0d68cd06504d63 ] sun6i_spi_probe() uses sun6i_spi_runtime_resume() to prepare/enable clocks, so sun6i_spi_remove() should use sun6i_spi_runtime_suspend() to disable/unprepare them if we're not suspended. Replacing pm_runtime_disable() by pm_runtime_force_suspend() will ensure that sun6i_spi_runtime_suspend() is called if needed. Found by Linux Driver Verification project (linuxtesting.org). Fixes: 3558fe900e8af (spi: sunxi: Add Allwinner A31 SPI controller driver) Signed-off-by: Tobias Jordan <Tobias.Jordan(a)elektrobit.com> Acked-by: Maxime Ripard <maxime.ripard(a)free-electrons.com> Signed-off-by: Mark Brown <broonie(a)kernel.org> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/spi/spi-sun6i.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/spi/spi-sun6i.c +++ b/drivers/spi/spi-sun6i.c @@ -457,7 +457,7 @@ err_free_master: static int sun6i_spi_remove(struct platform_device *pdev) { - pm_runtime_disable(&pdev->dev); + pm_runtime_force_suspend(&pdev->dev); return 0; } Patches currently in stable-queue which might be from Tobias.Jordan(a)elektrobit.com are queue-3.18/spi-sun6i-disable-unprepare-clocks-on-remove.patch

7 years, 3 months

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Patch "tcp: sysctl: Fix a race to avoid unexpected 0 window from space" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled tcp: sysctl: Fix a race to avoid unexpected 0 window from space to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: tcp-sysctl-fix-a-race-to-avoid-unexpected-0-window-from-space.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Gao Feng <fgao(a)ikuai8.com> Date: Fri, 24 Mar 2017 07:05:12 +0800 Subject: tcp: sysctl: Fix a race to avoid unexpected 0 window from space From: Gao Feng <fgao(a)ikuai8.com> [ Upstream commit c48367427a39ea0b85c7cf018fe4256627abfd9e ] Because sysctl_tcp_adv_win_scale could be changed any time, so there is one race in tcp_win_from_space. For example, 1.sysctl_tcp_adv_win_scale<=0 (sysctl_tcp_adv_win_scale is negative now) 2.space>>(-sysctl_tcp_adv_win_scale) (sysctl_tcp_adv_win_scale is postive now) As a result, tcp_win_from_space returns 0. It is unexpected. Certainly if the compiler put the sysctl_tcp_adv_win_scale into one register firstly, then use the register directly, it would be ok. But we could not depend on the compiler behavior. Signed-off-by: Gao Feng <fgao(a)ikuai8.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- include/net/tcp.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1099,9 +1099,11 @@ void tcp_select_initial_window(int __spa static inline int tcp_win_from_space(int space) { - return sysctl_tcp_adv_win_scale<=0 ? - (space>>(-sysctl_tcp_adv_win_scale)) : - space - (space>>sysctl_tcp_adv_win_scale); + int tcp_adv_win_scale = sysctl_tcp_adv_win_scale; + + return tcp_adv_win_scale <= 0 ? + (space>>(-tcp_adv_win_scale)) : + space - (space>>tcp_adv_win_scale); } /* Note: caller must be prepared to deal with negative returns */ Patches currently in stable-queue which might be from fgao(a)ikuai8.com are queue-3.18/tcp-sysctl-fix-a-race-to-avoid-unexpected-0-window-from-space.patch

7 years, 3 months

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Patch "selinux: check for address length in selinux_socket_bind()" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled selinux: check for address length in selinux_socket_bind() to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: selinux-check-for-address-length-in-selinux_socket_bind.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Alexander Potapenko <glider(a)google.com> Date: Mon, 6 Mar 2017 19:46:14 +0100 Subject: selinux: check for address length in selinux_socket_bind() From: Alexander Potapenko <glider(a)google.com> [ Upstream commit e2f586bd83177d22072b275edd4b8b872daba924 ] KMSAN (KernelMemorySanitizer, a new error detection tool) reports use of uninitialized memory in selinux_socket_bind(): ================================================================== BUG: KMSAN: use of unitialized memory inter: 0 CPU: 3 PID: 1074 Comm: packet2 Tainted: G B 4.8.0-rc6+ #1916 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 0000000000000000 ffff8800882ffb08 ffffffff825759c8 ffff8800882ffa48 ffffffff818bf551 ffffffff85bab870 0000000000000092 ffffffff85bab550 0000000000000000 0000000000000092 00000000bb0009bb 0000000000000002 Call Trace: [< inline >] __dump_stack lib/dump_stack.c:15 [<ffffffff825759c8>] dump_stack+0x238/0x290 lib/dump_stack.c:51 [<ffffffff818bdee6>] kmsan_report+0x276/0x2e0 mm/kmsan/kmsan.c:1008 [<ffffffff818bf0fb>] __msan_warning+0x5b/0xb0 mm/kmsan/kmsan_instr.c:424 [<ffffffff822dae71>] selinux_socket_bind+0xf41/0x1080 security/selinux/hooks.c:4288 [<ffffffff8229357c>] security_socket_bind+0x1ec/0x240 security/security.c:1240 [<ffffffff84265d98>] SYSC_bind+0x358/0x5f0 net/socket.c:1366 [<ffffffff84265a22>] SyS_bind+0x82/0xa0 net/socket.c:1356 [<ffffffff81005678>] do_syscall_64+0x58/0x70 arch/x86/entry/common.c:292 [<ffffffff8518217c>] entry_SYSCALL64_slow_path+0x25/0x25 arch/x86/entry/entry_64.o:? chained origin: 00000000ba6009bb [<ffffffff810bb7a7>] save_stack_trace+0x27/0x50 arch/x86/kernel/stacktrace.c:67 [< inline >] kmsan_save_stack_with_flags mm/kmsan/kmsan.c:322 [< inline >] kmsan_save_stack mm/kmsan/kmsan.c:337 [<ffffffff818bd2b8>] kmsan_internal_chain_origin+0x118/0x1e0 mm/kmsan/kmsan.c:530 [<ffffffff818bf033>] __msan_set_alloca_origin4+0xc3/0x130 mm/kmsan/kmsan_instr.c:380 [<ffffffff84265b69>] SYSC_bind+0x129/0x5f0 net/socket.c:1356 [<ffffffff84265a22>] SyS_bind+0x82/0xa0 net/socket.c:1356 [<ffffffff81005678>] do_syscall_64+0x58/0x70 arch/x86/entry/common.c:292 [<ffffffff8518217c>] return_from_SYSCALL_64+0x0/0x6a arch/x86/entry/entry_64.o:? origin description: ----address@SYSC_bind (origin=00000000b8c00900) ================================================================== (the line numbers are relative to 4.8-rc6, but the bug persists upstream) , when I run the following program as root: ======================================================= #include <string.h> #include <sys/socket.h> #include <netinet/in.h> int main(int argc, char *argv[]) { struct sockaddr addr; int size = 0; if (argc > 1) { size = atoi(argv[1]); } memset(&addr, 0, sizeof(addr)); int fd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP); bind(fd, &addr, size); return 0; } ======================================================= (for different values of |size| other error reports are printed). This happens because bind() unconditionally copies |size| bytes of |addr| to the kernel, leaving the rest uninitialized. Then security_socket_bind() reads the IP address bytes, including the uninitialized ones, to determine the port, or e.g. pass them further to sel_netnode_find(), which uses them to calculate a hash. Signed-off-by: Alexander Potapenko <glider(a)google.com> Acked-by: Eric Dumazet <edumazet(a)google.com> [PM: fixed some whitespace damage] Signed-off-by: Paul Moore <paul(a)paul-moore.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- security/selinux/hooks.c | 8 ++++++++ 1 file changed, 8 insertions(+) --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -4061,10 +4061,18 @@ static int selinux_socket_bind(struct so u32 sid, node_perm; if (family == PF_INET) { + if (addrlen < sizeof(struct sockaddr_in)) { + err = -EINVAL; + goto out; + } addr4 = (struct sockaddr_in *)address; snum = ntohs(addr4->sin_port); addrp = (char *)&addr4->sin_addr.s_addr; } else { + if (addrlen < SIN6_LEN_RFC2133) { + err = -EINVAL; + goto out; + } addr6 = (struct sockaddr_in6 *)address; snum = ntohs(addr6->sin6_port); addrp = (char *)&addr6->sin6_addr.s6_addr; Patches currently in stable-queue which might be from glider(a)google.com are queue-3.18/selinux-check-for-address-length-in-selinux_socket_bind.patch

7 years, 3 months

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Patch "spi: omap2-mcspi: poll OMAP2_MCSPI_CHSTAT_RXS for PIO transfer" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled spi: omap2-mcspi: poll OMAP2_MCSPI_CHSTAT_RXS for PIO transfer to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: spi-omap2-mcspi-poll-omap2_mcspi_chstat_rxs-for-pio-transfer.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Akinobu Mita <akinobu.mita(a)gmail.com> Date: Wed, 22 Mar 2017 09:18:26 +0900 Subject: spi: omap2-mcspi: poll OMAP2_MCSPI_CHSTAT_RXS for PIO transfer From: Akinobu Mita <akinobu.mita(a)gmail.com> [ Upstream commit 812613591cb652344186c4cd912304ed02138566 ] When running the spi-loopback-test with slower clock rate like 10 KHz, the test for 251 bytes transfer was failed. This failure triggered an spi-omap2-mcspi's error message "DMA RX last word empty". This message means that PIO for reading the remaining bytes due to the DMA transfer length reduction is failed. This problem can be fixed by polling OMAP2_MCSPI_CHSTAT_RXS bit in channel status register to wait until the receive buffer register is filled. Cc: Mark Brown <broonie(a)kernel.org> Signed-off-by: Akinobu Mita <akinobu.mita(a)gmail.com> Signed-off-by: Mark Brown <broonie(a)kernel.org> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/spi/spi-omap2-mcspi.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) --- a/drivers/spi/spi-omap2-mcspi.c +++ b/drivers/spi/spi-omap2-mcspi.c @@ -441,6 +441,8 @@ omap2_mcspi_rx_dma(struct spi_device *sp int elements = 0; int word_len, element_count; struct omap2_mcspi_cs *cs = spi->controller_state; + void __iomem *chstat_reg = cs->base + OMAP2_MCSPI_CHSTAT0; + mcspi = spi_master_get_devdata(spi->master); mcspi_dma = &mcspi->dma_channels[spi->chip_select]; count = xfer->len; @@ -501,8 +503,8 @@ omap2_mcspi_rx_dma(struct spi_device *sp if (l & OMAP2_MCSPI_CHCONF_TURBO) { elements--; - if (likely(mcspi_read_cs_reg(spi, OMAP2_MCSPI_CHSTAT0) - & OMAP2_MCSPI_CHSTAT_RXS)) { + if (!mcspi_wait_for_reg_bit(chstat_reg, + OMAP2_MCSPI_CHSTAT_RXS)) { u32 w; w = mcspi_read_cs_reg(spi, OMAP2_MCSPI_RX0); @@ -520,8 +522,7 @@ omap2_mcspi_rx_dma(struct spi_device *sp return count; } } - if (likely(mcspi_read_cs_reg(spi, OMAP2_MCSPI_CHSTAT0) - & OMAP2_MCSPI_CHSTAT_RXS)) { + if (!mcspi_wait_for_reg_bit(chstat_reg, OMAP2_MCSPI_CHSTAT_RXS)) { u32 w; w = mcspi_read_cs_reg(spi, OMAP2_MCSPI_RX0); Patches currently in stable-queue which might be from akinobu.mita(a)gmail.com are queue-3.18/spi-omap2-mcspi-poll-omap2_mcspi_chstat_rxs-for-pio-transfer.patch

7 years, 3 months

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Patch "scsi: sg: close race condition in sg_remove_sfp_usercontext()" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled scsi: sg: close race condition in sg_remove_sfp_usercontext() to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: scsi-sg-close-race-condition-in-sg_remove_sfp_usercontext.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Hannes Reinecke <hare(a)suse.de> Date: Fri, 7 Apr 2017 09:34:17 +0200 Subject: scsi: sg: close race condition in sg_remove_sfp_usercontext() From: Hannes Reinecke <hare(a)suse.de> [ Upstream commit 97d27b0dd015e980ade63fda111fd1353276e28b ] sg_remove_sfp_usercontext() is clearing any sg requests, but needs to take 'rq_list_lock' when modifying the list. Reported-by: Christoph Hellwig <hch(a)lst.de> Signed-off-by: Hannes Reinecke <hare(a)suse.com> Reviewed-by: Johannes Thumshirn <jthumshirn(a)suse.de> Tested-by: Johannes Thumshirn <jthumshirn(a)suse.de> Reviewed-by: Christoph Hellwig <hch(a)lst.de> Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/scsi/sg.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -535,6 +535,7 @@ sg_read(struct file *filp, char __user * } else count = (old_hdr->result == 0) ? 0 : -EIO; sg_finish_rem_req(srp); + sg_remove_request(sfp, srp); retval = count; free_old_hdr: kfree(old_hdr); @@ -575,6 +576,7 @@ sg_new_read(Sg_fd * sfp, char __user *bu } err_out: err2 = sg_finish_rem_req(srp); + sg_remove_request(sfp, srp); return err ? : err2 ? : count; } @@ -811,6 +813,7 @@ sg_common_write(Sg_fd * sfp, Sg_request SCSI_LOG_TIMEOUT(1, sg_printk(KERN_INFO, sfp->parentdp, "sg_common_write: start_req err=%d\n", k)); sg_finish_rem_req(srp); + sg_remove_request(sfp, srp); return k; /* probably out of space --> ENOMEM */ } if (atomic_read(&sdp->detaching)) { @@ -823,6 +826,7 @@ sg_common_write(Sg_fd * sfp, Sg_request } sg_finish_rem_req(srp); + sg_remove_request(sfp, srp); return -ENODEV; } @@ -1353,6 +1357,7 @@ sg_rq_end_io_usercontext(struct work_str struct sg_fd *sfp = srp->parentfp; sg_finish_rem_req(srp); + sg_remove_request(sfp, srp); kref_put(&sfp->f_ref, sg_remove_sfp); } @@ -1902,8 +1907,6 @@ sg_finish_rem_req(Sg_request *srp) else sg_remove_scat(sfp, req_schp); - sg_remove_request(sfp, srp); - return ret; } @@ -2250,12 +2253,17 @@ sg_remove_sfp_usercontext(struct work_st struct sg_fd *sfp = container_of(work, struct sg_fd, ew.work); struct sg_device *sdp = sfp->parentdp; Sg_request *srp; + unsigned long iflags; /* Cleanup any responses which were never read(). */ + write_lock_irqsave(&sfp->rq_list_lock, iflags); while (!list_empty(&sfp->rq_list)) { srp = list_first_entry(&sfp->rq_list, Sg_request, entry); sg_finish_rem_req(srp); + list_del(&srp->entry); + srp->parentfp = NULL; } + write_unlock_irqrestore(&sfp->rq_list_lock, iflags); if (sfp->reserve.bufflen > 0) { SCSI_LOG_TIMEOUT(6, sg_printk(KERN_INFO, sdp, Patches currently in stable-queue which might be from hare(a)suse.de are queue-3.18/scsi-devinfo-apply-to-hp-xp-the-same-flags-as-hitachi-vsp.patch queue-3.18/scsi-sg-close-race-condition-in-sg_remove_sfp_usercontext.patch

7 years, 3 months

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Patch "scsi: sg: check for valid direction before starting the request" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled scsi: sg: check for valid direction before starting the request to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: scsi-sg-check-for-valid-direction-before-starting-the-request.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Johannes Thumshirn <jthumshirn(a)suse.de> Date: Fri, 7 Apr 2017 09:34:15 +0200 Subject: scsi: sg: check for valid direction before starting the request From: Johannes Thumshirn <jthumshirn(a)suse.de> [ Upstream commit 28676d869bbb5257b5f14c0c95ad3af3a7019dd5 ] Check for a valid direction before starting the request, otherwise we risk running into an assertion in the scsi midlayer checking for valid requests. [mkp: fixed typo] Signed-off-by: Johannes Thumshirn <jthumshirn(a)suse.de> Link: http://www.spinics.net/lists/linux-scsi/msg104400.html Reported-by: Dmitry Vyukov <dvyukov(a)google.com> Signed-off-by: Hannes Reinecke <hare(a)suse.com> Tested-by: Johannes Thumshirn <jthumshirn(a)suse.de> Reviewed-by: Christoph Hellwig <hch(a)lst.de> Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/scsi/sg.c | 46 ++++++++++++++++++++++++++++++++++------------ 1 file changed, 34 insertions(+), 12 deletions(-) --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -674,18 +674,14 @@ sg_write(struct file *filp, const char _ * is a non-zero input_size, so emit a warning. */ if (hp->dxfer_direction == SG_DXFER_TO_FROM_DEV) { - static char cmd[TASK_COMM_LEN]; - if (strcmp(current->comm, cmd)) { - printk_ratelimited(KERN_WARNING - "sg_write: data in/out %d/%d bytes " - "for SCSI command 0x%x-- guessing " - "data in;\n program %s not setting " - "count and/or reply_len properly\n", - old_hdr.reply_len - (int)SZ_SG_HEADER, - input_size, (unsigned int) cmnd[0], - current->comm); - strcpy(cmd, current->comm); - } + printk_ratelimited(KERN_WARNING + "sg_write: data in/out %d/%d bytes " + "for SCSI command 0x%x-- guessing " + "data in;\n program %s not setting " + "count and/or reply_len properly\n", + old_hdr.reply_len - (int)SZ_SG_HEADER, + input_size, (unsigned int) cmnd[0], + current->comm); } k = sg_common_write(sfp, srp, cmnd, sfp->timeout, blocking); return (k < 0) ? k : count; @@ -764,6 +760,29 @@ sg_new_write(Sg_fd *sfp, struct file *fi return count; } +static bool sg_is_valid_dxfer(sg_io_hdr_t *hp) +{ + switch (hp->dxfer_direction) { + case SG_DXFER_NONE: + if (hp->dxferp || hp->dxfer_len > 0) + return false; + return true; + case SG_DXFER_TO_DEV: + case SG_DXFER_FROM_DEV: + case SG_DXFER_TO_FROM_DEV: + if (!hp->dxferp || hp->dxfer_len == 0) + return false; + return true; + case SG_DXFER_UNKNOWN: + if ((!hp->dxferp && hp->dxfer_len) || + (hp->dxferp && hp->dxfer_len == 0)) + return false; + return true; + default: + return false; + } +} + static int sg_common_write(Sg_fd * sfp, Sg_request * srp, unsigned char *cmnd, int timeout, int blocking) @@ -784,6 +803,9 @@ sg_common_write(Sg_fd * sfp, Sg_request "sg_common_write: scsi opcode=0x%02x, cmd_size=%d\n", (int) cmnd[0], (int) hp->cmd_len)); + if (!sg_is_valid_dxfer(hp)) + return -EINVAL; + k = sg_start_req(srp, cmnd); if (k) { SCSI_LOG_TIMEOUT(1, sg_printk(KERN_INFO, sfp->parentdp, Patches currently in stable-queue which might be from jthumshirn(a)suse.de are queue-3.18/scsi-sg-check-for-valid-direction-before-starting-the-request.patch queue-3.18/scsi-sg-close-race-condition-in-sg_remove_sfp_usercontext.patch

7 years, 3 months

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Patch "scsi: devinfo: apply to HP XP the same flags as Hitachi VSP" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled scsi: devinfo: apply to HP XP the same flags as Hitachi VSP to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: scsi-devinfo-apply-to-hp-xp-the-same-flags-as-hitachi-vsp.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Xose Vazquez Perez <xose.vazquez(a)gmail.com> Date: Fri, 17 Nov 2017 21:31:36 +0100 Subject: scsi: devinfo: apply to HP XP the same flags as Hitachi VSP From: Xose Vazquez Perez <xose.vazquez(a)gmail.com> [ Upstream commit b369a0471503130cfc74f9f62071db97f48948c3 ] Commit 56f3d383f37b ("scsi: scsi_devinfo: Add TRY_VPD_PAGES to HITACHI OPEN-V blacklist entry") modified some Hitachi entries: HITACHI is always supporting VPD pages, even though it's claiming to support SCSI Revision 3 only. The same should have been done also for HP-rebranded. [mkp: checkpatch and tweaked commit message] Cc: Hannes Reinecke <hare(a)suse.de> Cc: Takahiro Yasui <takahiro.yasui(a)hds.com> Cc: Matthias Rudolph <Matthias.Rudolph(a)hitachivantara.com> Cc: Martin K. Petersen <martin.petersen(a)oracle.com> Cc: James E.J. Bottomley <jejb(a)linux.vnet.ibm.com> Cc: SCSI ML <linux-scsi(a)vger.kernel.org> Signed-off-by: Xose Vazquez Perez <xose.vazquez(a)gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/scsi/scsi_devinfo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/scsi/scsi_devinfo.c +++ b/drivers/scsi/scsi_devinfo.c @@ -180,7 +180,7 @@ static struct { {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ - {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */ + {"HP", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, /* HP XP Arrays */ {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, {"HP", "C1557A", NULL, BLIST_FORCELUN}, Patches currently in stable-queue which might be from xose.vazquez(a)gmail.com are queue-3.18/scsi-devinfo-apply-to-hp-xp-the-same-flags-as-hitachi-vsp.patch

7 years, 3 months

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Patch "scsi: ipr: Fix missed EH wakeup" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled scsi: ipr: Fix missed EH wakeup to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: scsi-ipr-fix-missed-eh-wakeup.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Brian King <brking(a)linux.vnet.ibm.com> Date: Wed, 15 Mar 2017 16:58:36 -0500 Subject: scsi: ipr: Fix missed EH wakeup From: Brian King <brking(a)linux.vnet.ibm.com> [ Upstream commit 66a0d59cdd12546ddf01d229de28b07ccf6d637f ] Following a command abort or device reset, ipr's EH handlers wait for the commands getting aborted to get sent back from the adapter prior to returning from the EH handler. This fixes up some cases where the completion handler was not getting called, which would have resulted in the EH thread waiting until it timed out, greatly extending EH time. Signed-off-by: Brian King <brking(a)linux.vnet.ibm.com> Reviewed-by: Wendy Xiong <wenxiong(a)linux.vnet.ibm.com> Tested-by: Wendy Xiong <wenxiong(a)linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/scsi/ipr.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -828,8 +828,10 @@ static void ipr_sata_eh_done(struct ipr_ qc->err_mask |= AC_ERR_OTHER; sata_port->ioasa.status |= ATA_BUSY; - list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); ata_qc_complete(qc); + if (ipr_cmd->eh_comp) + complete(ipr_cmd->eh_comp); + list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); } /** @@ -5830,8 +5832,10 @@ static void ipr_erp_done(struct ipr_cmnd res->in_erp = 0; } scsi_dma_unmap(ipr_cmd->scsi_cmd); - list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); scsi_cmd->scsi_done(scsi_cmd); + if (ipr_cmd->eh_comp) + complete(ipr_cmd->eh_comp); + list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); } /** @@ -6214,8 +6218,10 @@ static void ipr_erp_start(struct ipr_ioa } scsi_dma_unmap(ipr_cmd->scsi_cmd); - list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); scsi_cmd->scsi_done(scsi_cmd); + if (ipr_cmd->eh_comp) + complete(ipr_cmd->eh_comp); + list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); } /** @@ -6241,8 +6247,10 @@ static void ipr_scsi_done(struct ipr_cmn scsi_dma_unmap(scsi_cmd); spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags); - list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); scsi_cmd->scsi_done(scsi_cmd); + if (ipr_cmd->eh_comp) + complete(ipr_cmd->eh_comp); + list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags); } else { spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); Patches currently in stable-queue which might be from brking(a)linux.vnet.ibm.com are queue-3.18/scsi-ipr-fix-missed-eh-wakeup.patch

7 years, 3 months

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Patch "sched: Stop resched_cpu() from sending IPIs to offline CPUs" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled sched: Stop resched_cpu() from sending IPIs to offline CPUs to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: sched-stop-resched_cpu-from-sending-ipis-to-offline-cpus.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: "Paul E. McKenney" <paulmck(a)linux.vnet.ibm.com> Date: Fri, 13 Oct 2017 16:24:28 -0700 Subject: sched: Stop resched_cpu() from sending IPIs to offline CPUs From: "Paul E. McKenney" <paulmck(a)linux.vnet.ibm.com> [ Upstream commit a0982dfa03efca6c239c52cabebcea4afb93ea6b ] The rcutorture test suite occasionally provokes a splat due to invoking resched_cpu() on an offline CPU: WARNING: CPU: 2 PID: 8 at /home/paulmck/public_git/linux-rcu/arch/x86/kernel/smp.c:128 native_smp_send_reschedule+0x37/0x40 Modules linked in: CPU: 2 PID: 8 Comm: rcu_preempt Not tainted 4.14.0-rc4+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 task: ffff902ede9daf00 task.stack: ffff96c50010c000 RIP: 0010:native_smp_send_reschedule+0x37/0x40 RSP: 0018:ffff96c50010fdb8 EFLAGS: 00010096 RAX: 000000000000002e RBX: ffff902edaab4680 RCX: 0000000000000003 RDX: 0000000080000003 RSI: 0000000000000000 RDI: 00000000ffffffff RBP: ffff96c50010fdb8 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 00000000299f36ae R12: 0000000000000001 R13: ffffffff9de64240 R14: 0000000000000001 R15: ffffffff9de64240 FS: 0000000000000000(0000) GS:ffff902edfc80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000f7d4c642 CR3: 000000001e0e2000 CR4: 00000000000006e0 Call Trace: resched_curr+0x8f/0x1c0 resched_cpu+0x2c/0x40 rcu_implicit_dynticks_qs+0x152/0x220 force_qs_rnp+0x147/0x1d0 ? sync_rcu_exp_select_cpus+0x450/0x450 rcu_gp_kthread+0x5a9/0x950 kthread+0x142/0x180 ? force_qs_rnp+0x1d0/0x1d0 ? kthread_create_on_node+0x40/0x40 ret_from_fork+0x27/0x40 Code: 14 01 0f 92 c0 84 c0 74 14 48 8b 05 14 4f f4 00 be fd 00 00 00 ff 90 a0 00 00 00 5d c3 89 fe 48 c7 c7 38 89 ca 9d e8 e5 56 08 00 <0f> ff 5d c3 0f 1f 44 00 00 8b 05 52 9e 37 02 85 c0 75 38 55 48 ---[ end trace 26df9e5df4bba4ac ]--- This splat cannot be generated by expedited grace periods because they always invoke resched_cpu() on the current CPU, which is good because expedited grace periods require that resched_cpu() unconditionally succeed. However, other parts of RCU can tolerate resched_cpu() acting as a no-op, at least as long as it doesn't happen too often. This commit therefore makes resched_cpu() invoke resched_curr() only if the CPU is either online or is the current CPU. Signed-off-by: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> Cc: Ingo Molnar <mingo(a)redhat.com> Cc: Peter Zijlstra <peterz(a)infradead.org> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- kernel/sched/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -633,7 +633,8 @@ void resched_cpu(int cpu) unsigned long flags; raw_spin_lock_irqsave(&rq->lock, flags); - resched_curr(rq); + if (cpu_online(cpu) || cpu == smp_processor_id()) + resched_curr(rq); raw_spin_unlock_irqrestore(&rq->lock, flags); } Patches currently in stable-queue which might be from paulmck(a)linux.vnet.ibm.com are queue-3.18/sched-stop-resched_cpu-from-sending-ipis-to-offline-cpus.patch queue-3.18/rcutorture-configinit-fix-build-directory-error-message.patch

7 years, 3 months

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Patch "sched: act_csum: don't mangle TCP and UDP GSO packets" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled sched: act_csum: don't mangle TCP and UDP GSO packets to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: sched-act_csum-don-t-mangle-tcp-and-udp-gso-packets.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Davide Caratti <dcaratti(a)redhat.com> Date: Thu, 23 Mar 2017 10:39:40 +0100 Subject: sched: act_csum: don't mangle TCP and UDP GSO packets From: Davide Caratti <dcaratti(a)redhat.com> [ Upstream commit add641e7dee31b36aee83412c29e39dd1f5e0c9c ] after act_csum computes the checksum on skbs carrying GSO TCP/UDP packets, subsequent segmentation fails because skb_needs_check(skb, true) returns true. Because of that, skb_warn_bad_offload() is invoked and the following message is displayed: WARNING: CPU: 3 PID: 28 at net/core/dev.c:2553 skb_warn_bad_offload+0xf0/0xfd <...> [<ffffffff8171f486>] skb_warn_bad_offload+0xf0/0xfd [<ffffffff8161304c>] __skb_gso_segment+0xec/0x110 [<ffffffff8161340d>] validate_xmit_skb+0x12d/0x2b0 [<ffffffff816135d2>] validate_xmit_skb_list+0x42/0x70 [<ffffffff8163c560>] sch_direct_xmit+0xd0/0x1b0 [<ffffffff8163c760>] __qdisc_run+0x120/0x270 [<ffffffff81613b3d>] __dev_queue_xmit+0x23d/0x690 [<ffffffff81613fa0>] dev_queue_xmit+0x10/0x20 Since GSO is able to compute checksum on individual segments of such skbs, we can simply skip mangling the packet. Signed-off-by: Davide Caratti <dcaratti(a)redhat.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/sched/act_csum.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) --- a/net/sched/act_csum.c +++ b/net/sched/act_csum.c @@ -176,6 +176,9 @@ static int tcf_csum_ipv4_tcp(struct sk_b struct tcphdr *tcph; const struct iphdr *iph; + if (skb_is_gso(skb) && skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4) + return 1; + tcph = tcf_csum_skb_nextlayer(skb, ihl, ipl, sizeof(*tcph)); if (tcph == NULL) return 0; @@ -197,6 +200,9 @@ static int tcf_csum_ipv6_tcp(struct sk_b struct tcphdr *tcph; const struct ipv6hdr *ip6h; + if (skb_is_gso(skb) && skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6) + return 1; + tcph = tcf_csum_skb_nextlayer(skb, ihl, ipl, sizeof(*tcph)); if (tcph == NULL) return 0; @@ -220,6 +226,9 @@ static int tcf_csum_ipv4_udp(struct sk_b const struct iphdr *iph; u16 ul; + if (skb_is_gso(skb) && skb_shinfo(skb)->gso_type & SKB_GSO_UDP) + return 1; + /* * Support both UDP and UDPLITE checksum algorithms, Don't use * udph->len to get the real length without any protocol check, @@ -273,6 +282,9 @@ static int tcf_csum_ipv6_udp(struct sk_b const struct ipv6hdr *ip6h; u16 ul; + if (skb_is_gso(skb) && skb_shinfo(skb)->gso_type & SKB_GSO_UDP) + return 1; + /* * Support both UDP and UDPLITE checksum algorithms, Don't use * udph->len to get the real length without any protocol check, Patches currently in stable-queue which might be from dcaratti(a)redhat.com are queue-3.18/sched-act_csum-don-t-mangle-tcp-and-udp-gso-packets.patch

7 years, 3 months

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Patch "regulator: isl9305: fix array size" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled regulator: isl9305: fix array size to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: regulator-isl9305-fix-array-size.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: "Vincent Stehlé" <vincent.stehle(a)laposte.net> Date: Sun, 9 Apr 2017 22:05:05 +0200 Subject: regulator: isl9305: fix array size From: "Vincent Stehlé" <vincent.stehle(a)laposte.net> [ Upstream commit 0c08aaf873174c95e674cf21ffcd041c589d2e5b ] ISL9305_MAX_REGULATOR is the last index used to access the init_data[] array, so we need to add one to this last index to obtain the necessary array size. This fixes the following smatch error: drivers/regulator/isl9305.c:160 isl9305_i2c_probe() error: buffer overflow 'pdata->init_data' 3 <= 3 Fixes: dec38b5ce6a9edb4 ("regulator: isl9305: Add Intersil ISL9305/H driver") Signed-off-by: Vincent StehlÃ© <vincent.stehle(a)laposte.net> Cc: Mark Brown <broonie(a)kernel.org> Signed-off-by: Mark Brown <broonie(a)kernel.org> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- include/linux/platform_data/isl9305.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/linux/platform_data/isl9305.h +++ b/include/linux/platform_data/isl9305.h @@ -24,7 +24,7 @@ struct regulator_init_data; struct isl9305_pdata { - struct regulator_init_data *init_data[ISL9305_MAX_REGULATOR]; + struct regulator_init_data *init_data[ISL9305_MAX_REGULATOR + 1]; }; #endif Patches currently in stable-queue which might be from vincent.stehle(a)laposte.net are queue-3.18/regulator-isl9305-fix-array-size.patch

7 years, 3 months

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Patch "reiserfs: Make cancel_old_flush() reliable" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled reiserfs: Make cancel_old_flush() reliable to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: reiserfs-make-cancel_old_flush-reliable.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Jan Kara <jack(a)suse.cz> Date: Wed, 5 Apr 2017 14:09:48 +0200 Subject: reiserfs: Make cancel_old_flush() reliable From: Jan Kara <jack(a)suse.cz> [ Upstream commit 71b0576bdb862e964a82c73327cdd1a249c53e67 ] Currently canceling of delayed work that flushes old data using cancel_old_flush() does not prevent work from being requeued. Thus in theory new work can be queued after cancel_old_flush() from reiserfs_freeze() has run. This will become larger problem once flush_old_commits() can requeue the work itself. Fix the problem by recording in sbi->work_queue that flushing work is canceled and should not be requeued. Signed-off-by: Jan Kara <jack(a)suse.cz> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- fs/reiserfs/journal.c | 2 +- fs/reiserfs/reiserfs.h | 1 + fs/reiserfs/super.c | 21 +++++++++++++++------ 3 files changed, 17 insertions(+), 7 deletions(-) --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -1961,7 +1961,7 @@ static int do_journal_release(struct rei * will be requeued because superblock is being shutdown and doesn't * have MS_ACTIVE set. */ - cancel_delayed_work_sync(&REISERFS_SB(sb)->old_work); + reiserfs_cancel_old_flush(sb); /* wait for all commits to finish */ cancel_delayed_work_sync(&SB_JOURNAL(sb)->j_work); --- a/fs/reiserfs/reiserfs.h +++ b/fs/reiserfs/reiserfs.h @@ -2946,6 +2946,7 @@ int reiserfs_allocate_list_bitmaps(struc struct reiserfs_list_bitmap *, unsigned int); void reiserfs_schedule_old_flush(struct super_block *s); +void reiserfs_cancel_old_flush(struct super_block *s); void add_save_link(struct reiserfs_transaction_handle *th, struct inode *inode, int truncate); int remove_save_link(struct inode *inode, int truncate); --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -89,7 +89,9 @@ static void flush_old_commits(struct wor s = sbi->s_journal->j_work_sb; spin_lock(&sbi->old_work_lock); - sbi->work_queued = 0; + /* Avoid clobbering the cancel state... */ + if (sbi->work_queued == 1) + sbi->work_queued = 0; spin_unlock(&sbi->old_work_lock); reiserfs_sync_fs(s, 1); @@ -116,21 +118,22 @@ void reiserfs_schedule_old_flush(struct spin_unlock(&sbi->old_work_lock); } -static void cancel_old_flush(struct super_block *s) +void reiserfs_cancel_old_flush(struct super_block *s) { struct reiserfs_sb_info *sbi = REISERFS_SB(s); - cancel_delayed_work_sync(&REISERFS_SB(s)->old_work); spin_lock(&sbi->old_work_lock); - sbi->work_queued = 0; + /* Make sure no new flushes will be queued */ + sbi->work_queued = 2; spin_unlock(&sbi->old_work_lock); + cancel_delayed_work_sync(&REISERFS_SB(s)->old_work); } static int reiserfs_freeze(struct super_block *s) { struct reiserfs_transaction_handle th; - cancel_old_flush(s); + reiserfs_cancel_old_flush(s); reiserfs_write_lock(s); if (!(s->s_flags & MS_RDONLY)) { @@ -151,7 +154,13 @@ static int reiserfs_freeze(struct super_ static int reiserfs_unfreeze(struct super_block *s) { + struct reiserfs_sb_info *sbi = REISERFS_SB(s); + reiserfs_allow_writes(s); + spin_lock(&sbi->old_work_lock); + /* Allow old_work to run again */ + sbi->work_queued = 0; + spin_unlock(&sbi->old_work_lock); return 0; } @@ -2164,7 +2173,7 @@ error_unlocked: if (sbi->commit_wq) destroy_workqueue(sbi->commit_wq); - cancel_delayed_work_sync(&REISERFS_SB(s)->old_work); + reiserfs_cancel_old_flush(s); reiserfs_free_bitmap_cache(s); if (SB_BUFFER_WITH_SB(s)) Patches currently in stable-queue which might be from jack(a)suse.cz are queue-3.18/reiserfs-make-cancel_old_flush-reliable.patch

7 years, 3 months

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Patch "rcutorture/configinit: Fix build directory error message" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled rcutorture/configinit: Fix build directory error message to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: rcutorture-configinit-fix-build-directory-error-message.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: SeongJae Park <sj38.park(a)gmail.com> Date: Fri, 3 Nov 2017 19:17:20 +0900 Subject: rcutorture/configinit: Fix build directory error message From: SeongJae Park <sj38.park(a)gmail.com> [ Upstream commit 2adfa4210f8f35cdfb4e08318cc06b99752964c2 ] The 'configinit.sh' script checks the format of optional argument for the build directory, printing an error message if the format is not valid. However, the error message uses the wrong variable, indicating an empty string even though the user entered a non-empty (but erroneous) string. This commit fixes the script to use the correct variable. Fixes: c87b9c601ac8 ("rcutorture: Add KVM-based test framework") Signed-off-by: SeongJae Park <sj38.park(a)gmail.com> Signed-off-by: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- tools/testing/selftests/rcutorture/bin/configinit.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/tools/testing/selftests/rcutorture/bin/configinit.sh +++ b/tools/testing/selftests/rcutorture/bin/configinit.sh @@ -51,7 +51,7 @@ then mkdir $builddir fi else - echo Bad build directory: \"$builddir\" + echo Bad build directory: \"$buildloc\" exit 2 fi fi Patches currently in stable-queue which might be from sj38.park(a)gmail.com are queue-3.18/rcutorture-configinit-fix-build-directory-error-message.patch

7 years, 3 months

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Patch "powerpc: Avoid taking a data miss on every userspace instruction miss" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled powerpc: Avoid taking a data miss on every userspace instruction miss to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: powerpc-avoid-taking-a-data-miss-on-every-userspace-instruction-miss.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Anton Blanchard <anton(a)samba.org> Date: Mon, 3 Apr 2017 16:41:02 +1000 Subject: powerpc: Avoid taking a data miss on every userspace instruction miss From: Anton Blanchard <anton(a)samba.org> [ Upstream commit a7a9dcd882a67b68568868b988289fce5ffd8419 ] Early on in do_page_fault() we call store_updates_sp(), regardless of the type of exception. For an instruction miss this doesn't make sense, because we only use this information to detect if a data miss is the result of a stack expansion instruction or not. Worse still, it results in a data miss within every userspace instruction miss handler, because we try and load the very instruction we are about to install a pte for! A simple exec microbenchmark runs 6% faster on POWER8 with this fix: #include <stdlib.h> #include <stdio.h> #include <unistd.h> int main(int argc, char *argv[]) { unsigned long left = atol(argv[1]); char leftstr[16]; if (left-- == 0) return 0; sprintf(leftstr, "%ld", left); execlp(argv[0], argv[0], leftstr, NULL); perror("exec failed\n"); return 0; } Pass the number of iterations on the command line (eg 10000) and time how long it takes to execute. Signed-off-by: Anton Blanchard <anton(a)samba.org> Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/powerpc/mm/fault.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -294,7 +294,7 @@ int __kprobes do_page_fault(struct pt_re * can result in fault, which will cause a deadlock when called with * mmap_sem held */ - if (user_mode(regs)) + if (!is_exec && user_mode(regs)) store_update_sp = store_updates_sp(regs); if (user_mode(regs)) Patches currently in stable-queue which might be from anton(a)samba.org are queue-3.18/powerpc-avoid-taking-a-data-miss-on-every-userspace-instruction-miss.patch

7 years, 3 months

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Patch "perf tools: Make perf_event__synthesize_mmap_events() scale" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled perf tools: Make perf_event__synthesize_mmap_events() scale to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: perf-tools-make-perf_event__synthesize_mmap_events-scale.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Stephane Eranian <eranian(a)google.com> Date: Wed, 15 Mar 2017 10:17:13 -0700 Subject: perf tools: Make perf_event__synthesize_mmap_events() scale From: Stephane Eranian <eranian(a)google.com> [ Upstream commit 88b897a30c525c2eee6e7f16e1e8d0f18830845e ] This patch significantly improves the execution time of perf_event__synthesize_mmap_events() when running perf record on systems where processes have lots of threads. It just happens that cat /proc/pid/maps support uses a O(N^2) algorithm to generate each map line in the maps file. If you have 1000 threads, then you have necessarily 1000 stacks. For each vma, you need to check if it corresponds to a thread's stack. With a large number of threads, this can take a very long time. I have seen latencies >> 10mn. As of today, perf does not use the fact that a mapping is a stack, therefore we can work around the issue by using /proc/pid/tasks/pid/maps. This entry does not try to map a vma to stack and is thus much faster with no loss of functonality. The proc-map-timeout logic is kept in case users still want some upper limit. In V2, we fix the file path from /proc/pid/tasks/pid/maps to actual /proc/pid/task/pid/maps, tasks -> task. Thanks Arnaldo for catching this. Committer note: This problem seems to have been elliminated in the kernel since commit : b18cb64ead40 ("fs/proc: Stop trying to report thread stacks"). Signed-off-by: Stephane Eranian <eranian(a)google.com> Acked-by: Jiri Olsa <jolsa(a)redhat.com> Cc: Andy Lutomirski <luto(a)kernel.org> Cc: Namhyung Kim <namhyung(a)kernel.org> Cc: Peter Zijlstra <peterz(a)infradead.org> Link: http://lkml.kernel.org/r/20170315135059.GC2177@redhat.com Link: http://lkml.kernel.org/r/1489598233-25586-1-git-send-email-eranian@google.c… Signed-off-by: Arnaldo Carvalho de Melo <acme(a)redhat.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- tools/perf/util/event.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -167,8 +167,8 @@ int perf_event__synthesize_mmap_events(s if (machine__is_default_guest(machine)) return 0; - snprintf(filename, sizeof(filename), "%s/proc/%d/maps", - machine->root_dir, pid); + snprintf(filename, sizeof(filename), "%s/proc/%d/task/%d/maps", + machine->root_dir, pid, pid); fp = fopen(filename, "r"); if (fp == NULL) { Patches currently in stable-queue which might be from eranian(a)google.com are queue-3.18/perf-session-don-t-rely-on-evlist-in-pipe-mode.patch queue-3.18/perf-tools-make-perf_event__synthesize_mmap_events-scale.patch queue-3.18/perf-inject-copy-events-when-reordering-events-in-pipe-mode.patch

7 years, 3 months

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Patch "perf session: Don't rely on evlist in pipe mode" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled perf session: Don't rely on evlist in pipe mode to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: perf-session-don-t-rely-on-evlist-in-pipe-mode.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: David Carrillo-Cisneros <davidcc(a)google.com> Date: Mon, 10 Apr 2017 13:14:30 -0700 Subject: perf session: Don't rely on evlist in pipe mode From: David Carrillo-Cisneros <davidcc(a)google.com> [ Upstream commit 0973ad97c187e06aece61f685b9c3b2d93290a73 ] Session sets a number parameters that rely on evlist. These parameters are not used in pipe-mode and should not be set, since evlist is unavailable. Fix that. Signed-off-by: David Carrillo-Cisneros <davidcc(a)google.com> Acked-by: Jiri Olsa <jolsa(a)kernel.org> Cc: Alexander Shishkin <alexander.shishkin(a)linux.intel.com> Cc: Andi Kleen <ak(a)linux.intel.com> Cc: He Kuang <hekuang(a)huawei.com> Cc: Masami Hiramatsu <mhiramat(a)kernel.org> Cc: Paul Turner <pjt(a)google.com> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Simon Que <sque(a)chromium.org> Cc: Stephane Eranian <eranian(a)google.com> Cc: Wang Nan <wangnan0(a)huawei.com> Link: http://lkml.kernel.org/r/20170410201432.24807-6-davidcc@google.com [ Check if file != NULL in perf_session__new(), like when used by builtin-top.c ] Signed-off-by: Arnaldo Carvalho de Melo <acme(a)redhat.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- tools/perf/util/session.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -108,8 +108,14 @@ struct perf_session *perf_session__new(s if (perf_session__open(session) < 0) goto out_close; - perf_session__set_id_hdr_size(session); - perf_session__set_comm_exec(session); + /* + * set session attributes that are present in perf.data + * but not in pipe-mode. + */ + if (!file->is_pipe) { + perf_session__set_id_hdr_size(session); + perf_session__set_comm_exec(session); + } } } @@ -122,7 +128,11 @@ struct perf_session *perf_session__new(s pr_warning("Cannot read kernel map\n"); } - if (tool && tool->ordering_requires_timestamps && + /* + * In pipe-mode, evlist is empty until PERF_RECORD_HEADER_ATTR is + * processed, so perf_evlist__sample_id_all is not meaningful here. + */ + if ((!file || !file->is_pipe) && tool && tool->ordering_requires_timestamps && tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) { dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); tool->ordered_events = false; Patches currently in stable-queue which might be from davidcc(a)google.com are queue-3.18/perf-session-don-t-rely-on-evlist-in-pipe-mode.patch queue-3.18/perf-inject-copy-events-when-reordering-events-in-pipe-mode.patch

7 years, 3 months

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Patch "perf inject: Copy events when reordering events in pipe mode" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled perf inject: Copy events when reordering events in pipe mode to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: perf-inject-copy-events-when-reordering-events-in-pipe-mode.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: David Carrillo-Cisneros <davidcc(a)google.com> Date: Mon, 10 Apr 2017 13:14:27 -0700 Subject: perf inject: Copy events when reordering events in pipe mode From: David Carrillo-Cisneros <davidcc(a)google.com> [ Upstream commit 1e0d4f0200e4dbdfc38d818f329d8a0955f7c6f5 ] __perf_session__process_pipe_events reuses the same memory buffer to process all events in the pipe. When reordering is needed (e.g. -b option), events are not immediately flushed, but kept around until reordering is possible, causing memory corruption. The problem is usually observed by a "Unknown sample error" output. It can easily be reproduced by: perf record -o - noploop | perf inject -b > output Committer testing: Before: $ perf record -o - stress -t 2 -c 2 | perf inject -b > /dev/null stress: info: [8297] dispatching hogs: 2 cpu, 0 io, 0 vm, 0 hdd stress: info: [8297] successful run completed in 2s [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.000 MB - ] Warning: Found 1 unknown events! Is this an older tool processing a perf.data file generated by a more recent tool? If that is not the case, consider reporting to linux-kernel(a)vger.kernel.org. $ After: $ perf record -o - stress -t 2 -c 2 | perf inject -b > /dev/null stress: info: [9027] dispatching hogs: 2 cpu, 0 io, 0 vm, 0 hdd stress: info: [9027] successful run completed in 2s [ perf record: Woken up 3 times to write data ] [ perf record: Captured and wrote 0.000 MB - ] no symbols found in /usr/bin/stress, maybe install a debug package? no symbols found in /usr/bin/stress, maybe install a debug package? $ Signed-off-by: David Carrillo-Cisneros <davidcc(a)google.com> Tested-by: Arnaldo Carvalho de Melo <acme(a)redhat.com> Acked-by: Jiri Olsa <jolsa(a)kernel.org> Cc: Alexander Shishkin <alexander.shishkin(a)linux.intel.com> Cc: Andi Kleen <ak(a)linux.intel.com> Cc: He Kuang <hekuang(a)huawei.com> Cc: Masami Hiramatsu <mhiramat(a)kernel.org> Cc: Paul Turner <pjt(a)google.com> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Simon Que <sque(a)chromium.org> Cc: Stephane Eranian <eranian(a)google.com> Cc: Wang Nan <wangnan0(a)huawei.com> Link: http://lkml.kernel.org/r/20170410201432.24807-3-davidcc@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme(a)redhat.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- tools/perf/util/ordered-events.c | 3 ++- tools/perf/util/session.c | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) --- a/tools/perf/util/ordered-events.c +++ b/tools/perf/util/ordered-events.c @@ -80,7 +80,7 @@ static union perf_event *dup_event(struc static void free_dup_event(struct ordered_events *oe, union perf_event *event) { - if (oe->copy_on_queue) { + if (event && oe->copy_on_queue) { oe->cur_alloc_size -= event->header.size; free(event); } @@ -151,6 +151,7 @@ void ordered_events__delete(struct order list_move(&event->list, &oe->cache); oe->nr_events--; free_dup_event(oe, event->event); + event->event = NULL; } static int __ordered_events__flush(struct perf_session *s, --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1080,6 +1080,7 @@ static int __perf_session__process_pipe_ buf = malloc(cur_size); if (!buf) return -errno; + ordered_events__set_copy_on_queue(oe, true); more: event = buf; err = readn(fd, event, sizeof(struct perf_event_header)); Patches currently in stable-queue which might be from davidcc(a)google.com are queue-3.18/perf-session-don-t-rely-on-evlist-in-pipe-mode.patch queue-3.18/perf-inject-copy-events-when-reordering-events-in-pipe-mode.patch

7 years, 3 months

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Patch "PCI/MSI: Stop disabling MSI/MSI-X in pci_device_shutdown()" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled PCI/MSI: Stop disabling MSI/MSI-X in pci_device_shutdown() to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: pci-msi-stop-disabling-msi-msi-x-in-pci_device_shutdown.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Prarit Bhargava <prarit(a)redhat.com> Date: Thu, 26 Jan 2017 14:07:47 -0500 Subject: PCI/MSI: Stop disabling MSI/MSI-X in pci_device_shutdown() From: Prarit Bhargava <prarit(a)redhat.com> [ Upstream commit fda78d7a0ead144f4b2cdb582dcba47911f4952c ] The pci_bus_type .shutdown method, pci_device_shutdown(), is called from device_shutdown() in the kernel restart and shutdown paths. Previously, pci_device_shutdown() called pci_msi_shutdown() and pci_msix_shutdown(). This disables MSI and MSI-X, which causes the device to fall back to raising interrupts via INTx. But the driver is still bound to the device, it doesn't know about this change, and it likely doesn't have an INTx handler, so these INTx interrupts cause "nobody cared" warnings like this: irq 16: nobody cared (try booting with the "irqpoll" option) CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.8.2-1.el7_UNSUPPORTED.x86_64 #1 Hardware name: Hewlett-Packard HP Z820 Workstation/158B, BIOS J63 v03.90 06/ ... The MSI disabling code was added by d52877c7b1af ("pci/irq: let pci_device_shutdown to call pci_msi_shutdown v2") because a driver left MSI enabled and kdump failed because the kexeced kernel wasn't prepared to receive the MSI interrupts. Subsequent commits 1851617cd2da ("PCI/MSI: Disable MSI at enumeration even if kernel doesn't support MSI") and e80e7edc55ba ("PCI/MSI: Initialize MSI capability for all architectures") changed the kexeced kernel to disable all MSIs itself so it no longer depends on the crashed kernel to clean up after itself. Stop disabling MSI/MSI-X in pci_device_shutdown(). This resolves the "nobody cared" unhandled IRQ issue above. It also allows PCI serial devices, which may rely on the MSI interrupts, to continue outputting messages during reboot/shutdown. [bhelgaas: changelog, drop pci_msi_shutdown() and pci_msix_shutdown() calls altogether] Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=187351 Signed-off-by: Prarit Bhargava <prarit(a)redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas(a)google.com> CC: Alex Williamson <alex.williamson(a)redhat.com> CC: David Arcari <darcari(a)redhat.com> CC: Myron Stowe <mstowe(a)redhat.com> CC: Lukas Wunner <lukas(a)wunner.de> CC: Keith Busch <keith.busch(a)intel.com> CC: Mika Westerberg <mika.westerberg(a)linux.intel.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/pci/pci-driver.c | 2 -- 1 file changed, 2 deletions(-) --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -450,8 +450,6 @@ static void pci_device_shutdown(struct d if (drv && drv->shutdown) drv->shutdown(pci_dev); - pci_msi_shutdown(pci_dev); - pci_msix_shutdown(pci_dev); #ifdef CONFIG_KEXEC /* Patches currently in stable-queue which might be from prarit(a)redhat.com are queue-3.18/pci-msi-stop-disabling-msi-msi-x-in-pci_device_shutdown.patch

7 years, 3 months

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Patch "of: fix of_device_get_modalias returned length when truncating buffers" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled of: fix of_device_get_modalias returned length when truncating buffers to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: of-fix-of_device_get_modalias-returned-length-when-truncating-buffers.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Rob Herring <robh(a)kernel.org> Date: Mon, 16 Jan 2017 14:28:39 -0600 Subject: of: fix of_device_get_modalias returned length when truncating buffers From: Rob Herring <robh(a)kernel.org> [ Upstream commit bcf54d5385abaea9c8026aae6f4eeb348671a52d ] If the length of the modalias is greater than the buffer size, then the modalias is truncated. However the untruncated length is returned which will cause an error. Fix this to return the truncated length. If an error in the case was desired, then then we should just return -ENOMEM. The reality is no device will ever have 4KB of compatible strings to hit this case. Signed-off-by: Rob Herring <robh(a)kernel.org> Cc: Frank Rowand <frowand.list(a)gmail.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/of/device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/of/device.c +++ b/drivers/of/device.c @@ -126,7 +126,7 @@ ssize_t of_device_get_modalias(struct de str[i] = '_'; } - return tsize; + return repend; } EXPORT_SYMBOL_GPL(of_device_get_modalias); Patches currently in stable-queue which might be from robh(a)kernel.org are queue-3.18/of-fix-of_device_get_modalias-returned-length-when-truncating-buffers.patch

7 years, 3 months

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Patch "net: xfrm: allow clearing socket xfrm policies." has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: xfrm: allow clearing socket xfrm policies. to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-xfrm-allow-clearing-socket-xfrm-policies.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Lorenzo Colitti <lorenzo(a)google.com> Date: Mon, 20 Nov 2017 19:26:02 +0900 Subject: net: xfrm: allow clearing socket xfrm policies. From: Lorenzo Colitti <lorenzo(a)google.com> [ Upstream commit be8f8284cd897af2482d4e54fbc2bdfc15557259 ] Currently it is possible to add or update socket policies, but not clear them. Therefore, once a socket policy has been applied, the socket cannot be used for unencrypted traffic. This patch allows (privileged) users to clear socket policies by passing in a NULL pointer and zero length argument to the {IP,IPV6}_{IPSEC,XFRM}_POLICY setsockopts. This results in both the incoming and outgoing policies being cleared. The simple approach taken in this patch cannot clear socket policies in only one direction. If desired this could be added in the future, for example by continuing to pass in a length of zero (which currently is guaranteed to return EMSGSIZE) and making the policy be a pointer to an integer that contains one of the XFRM_POLICY_{IN,OUT} enum values. An alternative would have been to interpret the length as a signed integer and use XFRM_POLICY_IN (i.e., 0) to clear the input policy and -XFRM_POLICY_OUT (i.e., -1) to clear the output policy. Tested: https://android-review.googlesource.com/539816 Signed-off-by: Lorenzo Colitti <lorenzo(a)google.com> Signed-off-by: Steffen Klassert <steffen.klassert(a)secunet.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/xfrm/xfrm_policy.c | 2 +- net/xfrm/xfrm_state.c | 7 +++++++ 2 files changed, 8 insertions(+), 1 deletion(-) --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -1292,7 +1292,7 @@ EXPORT_SYMBOL(xfrm_policy_delete); int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol) { - struct net *net = xp_net(pol); + struct net *net = sock_net(sk); struct xfrm_policy *old_pol; #ifdef CONFIG_XFRM_SUB_POLICY --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -1845,6 +1845,13 @@ int xfrm_user_policy(struct sock *sk, in struct xfrm_mgr *km; struct xfrm_policy *pol = NULL; + if (!optval && !optlen) { + xfrm_sk_policy_insert(sk, XFRM_POLICY_IN, NULL); + xfrm_sk_policy_insert(sk, XFRM_POLICY_OUT, NULL); + __sk_dst_reset(sk); + return 0; + } + if (optlen <= 0 || optlen > PAGE_SIZE) return -EMSGSIZE; Patches currently in stable-queue which might be from lorenzo(a)google.com are queue-3.18/net-xfrm-allow-clearing-socket-xfrm-policies.patch

7 years, 3 months

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Patch "net: mvpp2: set dma mask and coherent dma mask on PPv2.2" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: mvpp2: set dma mask and coherent dma mask on PPv2.2 to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-mvpp2-set-dma-mask-and-coherent-dma-mask-on-ppv2.2.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Thomas Petazzoni <thomas.petazzoni(a)free-electrons.com> Date: Tue, 7 Mar 2017 16:53:19 +0100 Subject: net: mvpp2: set dma mask and coherent dma mask on PPv2.2 From: Thomas Petazzoni <thomas.petazzoni(a)free-electrons.com> [ Upstream commit 2067e0a13cfe0b1bdca7b91bc5e4f2740b07d478 ] On PPv2.2, the streaming mappings can be anywhere in the first 40 bits of the physical address space. However, for the coherent mappings, we still need them to be in the first 32 bits of the address space, because all BM pools share a single register to store the high 32 bits of the BM pool address, which means all BM pools must be allocated in the same 4GB memory area. Signed-off-by: Thomas Petazzoni <thomas.petazzoni(a)free-electrons.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/marvell/mvpp2.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) --- a/drivers/net/ethernet/marvell/mvpp2.c +++ b/drivers/net/ethernet/marvell/mvpp2.c @@ -6339,6 +6339,20 @@ static int mvpp2_probe(struct platform_d /* Get system's tclk rate */ priv->tclk = clk_get_rate(priv->pp_clk); + if (priv->hw_version == MVPP22) { + err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(40)); + if (err) + goto err_mg_clk; + /* Sadly, the BM pools all share the same register to + * store the high 32 bits of their address. So they + * must all have the same high 32 bits, which forces + * us to restrict coherent memory to DMA_BIT_MASK(32). + */ + err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); + if (err) + goto err_mg_clk; + } + /* Initialize network controller */ err = mvpp2_init(pdev, priv); if (err < 0) { Patches currently in stable-queue which might be from thomas.petazzoni(a)free-electrons.com are queue-3.18/net-mvpp2-set-dma-mask-and-coherent-dma-mask-on-ppv2.2.patch

7 years, 3 months

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Patch "mtd: nand: ifc: update bufnum mask for ver >= 2.0.0" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled mtd: nand: ifc: update bufnum mask for ver >= 2.0.0 to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: mtd-nand-ifc-update-bufnum-mask-for-ver-2.0.0.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Jagdish Gediya <jagdish.gediya(a)nxp.com> Date: Thu, 23 Nov 2017 17:04:31 +0530 Subject: mtd: nand: ifc: update bufnum mask for ver >= 2.0.0 From: Jagdish Gediya <jagdish.gediya(a)nxp.com> [ Upstream commit bccb06c353af3764ca86d9da47652458e6c2eb41 ] Bufnum mask is used to calculate page position in the internal SRAM. As IFC version 2.0.0 has 16KB of internal SRAM as compared to older versions which had 8KB. Hence bufnum mask needs to be updated. Signed-off-by: Jagdish Gediya <jagdish.gediya(a)nxp.com> Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha(a)nxp.com> Signed-off-by: Boris Brezillon <boris.brezillon(a)free-electrons.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/mtd/nand/fsl_ifc_nand.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/drivers/mtd/nand/fsl_ifc_nand.c +++ b/drivers/mtd/nand/fsl_ifc_nand.c @@ -988,6 +988,13 @@ static int fsl_ifc_chip_init(struct fsl_ if (ver == FSL_IFC_V1_1_0) fsl_ifc_sram_init(priv); + /* + * As IFC version 2.0.0 has 16KB of internal SRAM as compared to older + * versions which had 8KB. Hence bufnum mask needs to be updated. + */ + if (ctrl->version >= FSL_IFC_VERSION_2_0_0) + priv->bufnum_mask = (priv->bufnum_mask * 2) + 1; + return 0; } Patches currently in stable-queue which might be from jagdish.gediya(a)nxp.com are queue-3.18/mtd-nand-ifc-update-bufnum-mask-for-ver-2.0.0.patch

7 years, 3 months

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Patch "net/faraday: Add missing include of of.h" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net/faraday: Add missing include of of.h to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-faraday-add-missing-include-of-of.h.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Andrew Lunn <andrew(a)lunn.ch> Date: Sun, 2 Apr 2017 20:20:47 +0200 Subject: net/faraday: Add missing include of of.h From: Andrew Lunn <andrew(a)lunn.ch> [ Upstream commit d39004ab136ebb6949a7dda9d24376f3d6209295 ] Breaking the include loop netdevice.h, dsa.h, devlink.h broke this driver, it depends on includes brought in by these headers. Adding linux/of.h fixes it. Fixes: ed0e39e97d34 ("net: break include loop netdevice.h, dsa.h, devlink.h") Signed-off-by: Andrew Lunn <andrew(a)lunn.ch> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/faraday/ftgmac100.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/net/ethernet/faraday/ftgmac100.c +++ b/drivers/net/ethernet/faraday/ftgmac100.c @@ -28,6 +28,7 @@ #include <linux/io.h> #include <linux/module.h> #include <linux/netdevice.h> +#include <linux/of.h> #include <linux/phy.h> #include <linux/platform_device.h> #include <net/ip.h> Patches currently in stable-queue which might be from andrew(a)lunn.ch are queue-3.18/net-faraday-add-missing-include-of-of.h.patch

7 years, 3 months

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Patch "mtd: nand: fix interpretation of NAND_CMD_NONE in nand_command[_lp]()" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled mtd: nand: fix interpretation of NAND_CMD_NONE in nand_command[_lp]() to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: mtd-nand-fix-interpretation-of-nand_cmd_none-in-nand_command.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Mar 19 10:11:52 CET 2018 From: Miquel Raynal <miquel.raynal(a)free-electrons.com> Date: Wed, 8 Nov 2017 17:00:27 +0100 Subject: mtd: nand: fix interpretation of NAND_CMD_NONE in nand_command[_lp]() From: Miquel Raynal <miquel.raynal(a)free-electrons.com> [ Upstream commit df467899da0b71465760b4e35127bce837244eee ] Some drivers (like nand_hynix.c) call ->cmdfunc() with NAND_CMD_NONE and a column address and expect the controller to only send address cycles. Right now, the default ->cmdfunc() implementations provided by the core do not filter out the command cycle in this case and forwards the request to the controller driver through the ->cmd_ctrl() method. The thing is, NAND controller drivers can get this wrong and send a command cycle with a NAND_CMD_NONE opcode and since NAND_CMD_NONE is -1, and the command field is usually casted to an u8, we end up sending the 0xFF command which is actually a RESET operation. Add conditions in nand_command[_lp]() functions to sending the initial command cycle when command == NAND_CMD_NONE. Signed-off-by: Miquel Raynal <miquel.raynal(a)free-electrons.com> Signed-off-by: Boris Brezillon <boris.brezillon(a)free-electrons.com> Signed-off-by: Sasha Levin <alexander.levin(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/mtd/nand/nand_base.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -600,7 +600,8 @@ static void nand_command(struct mtd_info chip->cmd_ctrl(mtd, readcmd, ctrl); ctrl &= ~NAND_CTRL_CHANGE; } - chip->cmd_ctrl(mtd, command, ctrl); + if (command != NAND_CMD_NONE) + chip->cmd_ctrl(mtd, command, ctrl); /* Address cycle, when necessary */ ctrl = NAND_CTRL_ALE | NAND_CTRL_CHANGE; @@ -629,6 +630,7 @@ static void nand_command(struct mtd_info */ switch (command) { + case NAND_CMD_NONE: case NAND_CMD_PAGEPROG: case NAND_CMD_ERASE1: case NAND_CMD_ERASE2: @@ -691,7 +693,9 @@ static void nand_command_lp(struct mtd_i } /* Command latch cycle */ - chip->cmd_ctrl(mtd, command, NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE); + if (command != NAND_CMD_NONE) + chip->cmd_ctrl(mtd, command, + NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE); if (column != -1 || page_addr != -1) { int ctrl = NAND_CTRL_CHANGE | NAND_NCE | NAND_ALE; @@ -724,6 +728,7 @@ static void nand_command_lp(struct mtd_i */ switch (command) { + case NAND_CMD_NONE: case NAND_CMD_CACHEDPROG: case NAND_CMD_PAGEPROG: case NAND_CMD_ERASE1: Patches currently in stable-queue which might be from miquel.raynal(a)free-electrons.com are queue-3.18/mtd-nand-fix-interpretation-of-nand_cmd_none-in-nand_command.patch

7 years, 3 months

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