January 2018 - Linux-stable-mirror

[Linux-stable-mirror] Patch "tcp_bbr: reset full pipe detection on loss recovery undo" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled tcp_bbr: reset full pipe detection on loss recovery undo to the 4.9-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_bbr-reset-full-pipe-detection-on-loss-recovery-undo.patch and it can be found in the queue-4.9 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 2f6c498e4f15d27852c04ed46d804a39137ba364 Mon Sep 17 00:00:00 2001 From: Neal Cardwell <ncardwell(a)google.com> Date: Thu, 7 Dec 2017 12:43:31 -0500 Subject: tcp_bbr: reset full pipe detection on loss recovery undo From: Neal Cardwell <ncardwell(a)google.com> commit 2f6c498e4f15d27852c04ed46d804a39137ba364 upstream. Fix BBR so that upon notification of a loss recovery undo BBR resets the full pipe detection (STARTUP exit) state machine. Under high reordering, reordering events can be interpreted as loss. If the reordering and spurious loss estimates are high enough, this could previously cause BBR to spuriously estimate that the pipe is full. Since spurious loss recovery means that our overall sending will have slowed down spuriously, this commit gives a flow more time to probe robustly for bandwidth and decide the pipe is really full. Signed-off-by: Neal Cardwell <ncardwell(a)google.com> Reviewed-by: Yuchung Cheng <ycheng(a)google.com> Acked-by: Soheil Hassas Yeganeh <soheil(a)google.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/ipv4/tcp_bbr.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/net/ipv4/tcp_bbr.c +++ b/net/ipv4/tcp_bbr.c @@ -843,6 +843,10 @@ static u32 bbr_sndbuf_expand(struct sock */ static u32 bbr_undo_cwnd(struct sock *sk) { + struct bbr *bbr = inet_csk_ca(sk); + + bbr->full_bw = 0; /* spurious slow-down; reset full pipe detection */ + bbr->full_bw_cnt = 0; return tcp_sk(sk)->snd_cwnd; } Patches currently in stable-queue which might be from ncardwell(a)google.com are queue-4.9/tcp_bbr-reset-full-pipe-detection-on-loss-recovery-undo.patch queue-4.9/tcp_bbr-reset-long-term-bandwidth-sampling-on-loss-recovery-undo.patch

6 years, 11 months

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[Linux-stable-mirror] [PATCH 2/2] pktcdvd: Fix a recently introduced NULL pointer dereference

by Bart Van Assche

Call bdev_get_queue(bdev) after bdev->bd_disk has been initialized instead of just before that pointer has been initialized. This patch avoids that the following command pktsetup 1 /dev/sr0 triggers the following kernel crash: BUG: unable to handle kernel NULL pointer dereference at 0000000000000548 IP: pkt_setup_dev+0x2db/0x670 [pktcdvd] CPU: 2 PID: 724 Comm: pktsetup Not tainted 4.15.0-rc4-dbg+ #1 Call Trace: pkt_ctl_ioctl+0xce/0x1c0 [pktcdvd] do_vfs_ioctl+0x8e/0x670 SyS_ioctl+0x3c/0x70 entry_SYSCALL_64_fastpath+0x23/0x9a Reported-by: Maciej S. Szmigiero <mail(a)maciej.szmigiero.name> Fixes: commit ca18d6f769d2 ("block: Make most scsi_req_init() calls implicit") Signed-off-by: Bart Van Assche <bart.vanassche(a)wdc.com> Tested-by: Maciej S. Szmigiero <mail(a)maciej.szmigiero.name> Cc: Maciej S. Szmigiero <mail(a)maciej.szmigiero.name> Cc: <stable(a)vger.kernel.org> # v4.13 --- drivers/block/pktcdvd.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index 2659b2534073..531a0915066b 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -2579,14 +2579,14 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev) bdev = bdget(dev); if (!bdev) return -ENOMEM; + ret = blkdev_get(bdev, FMODE_READ | FMODE_NDELAY, NULL); + if (ret) + return ret; if (!blk_queue_scsi_passthrough(bdev_get_queue(bdev))) { WARN_ONCE(true, "Attempt to register a non-SCSI queue\n"); - bdput(bdev); + blkdev_put(bdev, FMODE_READ | FMODE_NDELAY); return -EINVAL; } - ret = blkdev_get(bdev, FMODE_READ | FMODE_NDELAY, NULL); - if (ret) - return ret; /* This is safe, since we have a reference from open(). */ __module_get(THIS_MODULE); -- 2.15.1

6 years, 11 months

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[Linux-stable-mirror] [PATCH 1/2] pktcdvd: Fix pkt_setup_dev() error path

by Bart Van Assche

Commit 523e1d399ce0 ("block: make gendisk hold a reference to its queue") modified add_disk() and disk_release() but did not update any of the error paths that trigger a put_disk() call after disk->queue has been assigned. That introduced the following behavior in the pktcdvd driver if pkt_new_dev() fails: Kernel BUG at 00000000e98fd882 [verbose debug info unavailable] Since disk_release() calls blk_put_queue() anyway if disk->queue != NULL, fix this by removing the blk_cleanup_queue() call from the pkt_setup_dev() error path. Fixes: commit 523e1d399ce0 ("block: make gendisk hold a reference to its queue") Signed-off-by: Bart Van Assche <bart.vanassche(a)wdc.com> Cc: Tejun Heo <tj(a)kernel.org> Cc: Maciej S. Szmigiero <mail(a)maciej.szmigiero.name> Cc: <stable(a)vger.kernel.org> # v3.2 --- drivers/block/pktcdvd.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index 67974796c350..2659b2534073 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -2745,7 +2745,7 @@ static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev) pd->pkt_dev = MKDEV(pktdev_major, idx); ret = pkt_new_dev(pd, dev); if (ret) - goto out_new_dev; + goto out_mem2; /* inherit events of the host device */ disk->events = pd->bdev->bd_disk->events; @@ -2763,8 +2763,6 @@ static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev) mutex_unlock(&ctl_mutex); return 0; -out_new_dev: - blk_cleanup_queue(disk->queue); out_mem2: put_disk(disk); out_mem: -- 2.15.1

6 years, 11 months

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[Linux-stable-mirror] patch "mei: me: allow runtime pm for platform with D0i3" added to char-misc-testing

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled mei: me: allow runtime pm for platform with D0i3 to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-testing branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will be merged to the char-misc-next branch sometime soon, after it passes testing, and the merge window is open. If you have any questions about this process, please let me know. >From cc365dcf0e56271bedf3de95f88922abe248e951 Mon Sep 17 00:00:00 2001 From: Tomas Winkler <tomas.winkler(a)intel.com> Date: Tue, 2 Jan 2018 12:01:41 +0200 Subject: mei: me: allow runtime pm for platform with D0i3 >From the pci power documentation: "The driver itself should not call pm_runtime_allow(), though. Instead, it should let user space or some platform-specific code do that (user space can do it via sysfs as stated above)..." However, the S0ix residency cannot be reached without MEI device getting into low power state. Hence, for mei devices that support D0i3, it's better to make runtime power management mandatory and not rely on the system integration such as udev rules. This policy cannot be applied globally as some older platforms were found to have broken power management. Cc: <stable(a)vger.kernel.org> v4.13+ Cc: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Signed-off-by: Tomas Winkler <tomas.winkler(a)intel.com> Reviewed-by: Alexander Usyskin <alexander.usyskin(a)intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/misc/mei/pci-me.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index f4f17552c9b8..4a0ccda4d04b 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -238,8 +238,11 @@ static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) */ mei_me_set_pm_domain(dev); - if (mei_pg_is_enabled(dev)) + if (mei_pg_is_enabled(dev)) { pm_runtime_put_noidle(&pdev->dev); + if (hw->d0i3_supported) + pm_runtime_allow(&pdev->dev); + } dev_dbg(&pdev->dev, "initialization successful.\n"); -- 2.15.1

6 years, 11 months

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[Linux-stable-mirror] FAILED: patch "[PATCH] usbip: prevent leaking socket pointer address in messages" failed to apply to 4.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 90120d15f4c397272aaf41077960a157fc4212bf Mon Sep 17 00:00:00 2001 From: Shuah Khan <shuahkh(a)osg.samsung.com> Date: Fri, 15 Dec 2017 10:50:09 -0700 Subject: [PATCH] usbip: prevent leaking socket pointer address in messages usbip driver is leaking socket pointer address in messages. Remove the messages that aren't useful and print sockfd in the ones that are useful for debugging. Signed-off-by: Shuah Khan <shuahkh(a)osg.samsung.com> Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/usb/usbip/stub_dev.c b/drivers/usb/usbip/stub_dev.c index a3df8ee82faf..e31a6f204397 100644 --- a/drivers/usb/usbip/stub_dev.c +++ b/drivers/usb/usbip/stub_dev.c @@ -149,8 +149,7 @@ static void stub_shutdown_connection(struct usbip_device *ud) * step 1? */ if (ud->tcp_socket) { - dev_dbg(&sdev->udev->dev, "shutdown tcp_socket %p\n", - ud->tcp_socket); + dev_dbg(&sdev->udev->dev, "shutdown sockfd %d\n", ud->sockfd); kernel_sock_shutdown(ud->tcp_socket, SHUT_RDWR); } diff --git a/drivers/usb/usbip/usbip_common.c b/drivers/usb/usbip/usbip_common.c index f7978933b402..7b219d9109b4 100644 --- a/drivers/usb/usbip/usbip_common.c +++ b/drivers/usb/usbip/usbip_common.c @@ -317,26 +317,20 @@ int usbip_recv(struct socket *sock, void *buf, int size) struct msghdr msg = {.msg_flags = MSG_NOSIGNAL}; int total = 0; + if (!sock || !buf || !size) + return -EINVAL; + iov_iter_kvec(&msg.msg_iter, READ|ITER_KVEC, &iov, 1, size); usbip_dbg_xmit("enter\n"); - if (!sock || !buf || !size) { - pr_err("invalid arg, sock %p buff %p size %d\n", sock, buf, - size); - return -EINVAL; - } - do { - int sz = msg_data_left(&msg); + msg_data_left(&msg); sock->sk->sk_allocation = GFP_NOIO; result = sock_recvmsg(sock, &msg, MSG_WAITALL); - if (result <= 0) { - pr_debug("receive sock %p buf %p size %u ret %d total %d\n", - sock, buf + total, sz, result, total); + if (result <= 0) goto err; - } total += result; } while (msg_data_left(&msg)); diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c index 9efab3dc3734..c3e1008aa491 100644 --- a/drivers/usb/usbip/vhci_hcd.c +++ b/drivers/usb/usbip/vhci_hcd.c @@ -965,7 +965,7 @@ static void vhci_shutdown_connection(struct usbip_device *ud) /* need this? see stub_dev.c */ if (ud->tcp_socket) { - pr_debug("shutdown tcp_socket %p\n", ud->tcp_socket); + pr_debug("shutdown tcp_socket %d\n", ud->sockfd); kernel_sock_shutdown(ud->tcp_socket, SHUT_RDWR); }

6 years, 11 months

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[Linux-stable-mirror] [PATCH 2/3] x86/tsc: Fix erroneous TSC rate on Skylake Xeon

by Len Brown

From: Len Brown <len.brown(a)intel.com> Linux-4.9 added INTEL_FAM6_SKYLAKE_X to native_calibrate_tsc(), allowing the kernel to calculate the TSC frequency, instead of calibrating: commit 6baf3d61821f ("x86/tsc: Add additional Intel CPU models to the crystal quirk list") There are several problems with doing this. The first is that while SKX servers use a 25 MHz crystal, SKX workstations (with same model #) use a 24 MHz crystal. This results in a -4.0% time drift rate on SKX workstations. But even SKX servers have a problem. SKX subjects the crystal to an EMI reduction circuit that reduces its actual value by (approximately) -0.25%. This results in -1 second per 10 minute time drift as compared to network time on SKX servers. This also results in an even more subtle symptom on systems that use the LAPIC timer (versus the TSC deadline timer). Clock ticks scheduled with the LAPIC timer arrive a few usec before the time they are expected (according to the slow TSC). This causes Linux to poll-idle, when it should be in an idle power saving state. The idle and clock code do not graciously recover from this error, sometimes resulting in significant polling and significant power impact. So stop using native_calibrate_tsc() for INTEL_FAM6_SKYLAKE_X. native_calibrate_tsc() will return 0, boot will run with tsc_khz = cpu_khz, and the TSC refined calibration will update tsc_khz to correct for the difference. Yes, a future patch can detect 24 vs 25 MHz crystals, and it can estimate a correction for the EMI circuit impact. However, that would effect boot-time only, as we'd probably choose to keep the refined TSC calibration, because the EMI correction estimate may not be precise. Signed-off-by: Len Brown <len.brown(a)intel.com> Cc: Prarit Bhargava <prarit(a)redhat.com> Cc: <stable(a)vger.kernel.org> # v4.9+ --- arch/x86/kernel/tsc.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 49d772672367..19ca0004caf6 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -602,7 +602,6 @@ unsigned long native_calibrate_tsc(void) case INTEL_FAM6_KABYLAKE_DESKTOP: crystal_khz = 24000; /* 24.0 MHz */ break; - case INTEL_FAM6_SKYLAKE_X: case INTEL_FAM6_ATOM_DENVERTON: crystal_khz = 25000; /* 25.0 MHz */ break; -- 2.14.0-rc0

6 years, 11 months

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[Linux-stable-mirror] v3.2.97 build: 4 failures 20 warnings (v3.2.97)

by Build bot for Mark Brown

Tree/Branch: v3.2.97 Git describe: v3.2.97 Commit: 3993a5061a Linux 3.2.97 Build Time: 0 min 4 sec Passed: 0 / 4 ( 0.00 %) Failed: 4 / 4 (100.00 %) Errors: 6 Warnings: 20 Section Mismatches: 0 Failed defconfigs: x86_64-allnoconfig arm-allmodconfig arm-allnoconfig x86_64-defconfig Errors: x86_64-allnoconfig /home/broonie/build/linux-stable/scripts/mod/empty.c:1:0: error: code model kernel does not support PIC mode /home/broonie/build/linux-stable/kernel/bounds.c:1:0: error: code model kernel does not support PIC mode arm-allnoconfig /home/broonie/build/linux-stable/arch/arm/include/asm/div64.h:77:7: error: '__LINUX_ARM_ARCH__' undeclared (first use in this function) /home/broonie/build/linux-stable/arch/arm/include/asm/glue-cache.h:129:2: error: #error Unknown cache maintenance model /home/broonie/build/linux-stable/arch/arm/include/asm/glue-df.h:107:2: error: #error Unknown data abort handler type /home/broonie/build/linux-stable/arch/arm/include/asm/glue-pf.h:54:2: error: #error Unknown prefetch abort handler type x86_64-defconfig /home/broonie/build/linux-stable/scripts/mod/empty.c:1:0: error: code model kernel does not support PIC mode /home/broonie/build/linux-stable/kernel/bounds.c:1:0: error: code model kernel does not support PIC mode ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 2 warnings 0 mismatches : arm-allmodconfig 19 warnings 0 mismatches : arm-allnoconfig ------------------------------------------------------------------------------- Errors summary: 6 2 /home/broonie/build/linux-stable/scripts/mod/empty.c:1:0: error: code model kernel does not support PIC mode 2 /home/broonie/build/linux-stable/kernel/bounds.c:1:0: error: code model kernel does not support PIC mode 1 /home/broonie/build/linux-stable/arch/arm/include/asm/glue-pf.h:54:2: error: #error Unknown prefetch abort handler type 1 /home/broonie/build/linux-stable/arch/arm/include/asm/glue-df.h:107:2: error: #error Unknown data abort handler type 1 /home/broonie/build/linux-stable/arch/arm/include/asm/glue-cache.h:129:2: error: #error Unknown cache maintenance model 1 /home/broonie/build/linux-stable/arch/arm/include/asm/div64.h:77:7: error: '__LINUX_ARM_ARCH__' undeclared (first use in this function) Warnings Summary: 20 2 .config:27:warning: symbol value '' invalid for PHYS_OFFSET 1 /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:342:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:272:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:265:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:131:35: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:127:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:121:3: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:120:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:114:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/swab.h:25:28: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/processor.h:82:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/processor.h:102:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/irqflags.h:11:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/fpstate.h:32:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/cachetype.h:33:7: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/cachetype.h:28:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/cacheflush.h:196:7: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/cacheflush.h:194:7: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/bitops.h:217:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] 1 /home/broonie/build/linux-stable/arch/arm/include/asm/atomic.h:30:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- x86_64-allnoconfig : FAIL, 2 errors, 0 warnings, 0 section mismatches Errors: /home/broonie/build/linux-stable/scripts/mod/empty.c:1:0: error: code model kernel does not support PIC mode /home/broonie/build/linux-stable/kernel/bounds.c:1:0: error: code model kernel does not support PIC mode ------------------------------------------------------------------------------- arm-allmodconfig : FAIL, 0 errors, 2 warnings, 0 section mismatches Warnings: .config:27:warning: symbol value '' invalid for PHYS_OFFSET .config:27:warning: symbol value '' invalid for PHYS_OFFSET ------------------------------------------------------------------------------- arm-allnoconfig : FAIL, 4 errors, 19 warnings, 0 section mismatches Errors: /home/broonie/build/linux-stable/arch/arm/include/asm/div64.h:77:7: error: '__LINUX_ARM_ARCH__' undeclared (first use in this function) /home/broonie/build/linux-stable/arch/arm/include/asm/glue-cache.h:129:2: error: #error Unknown cache maintenance model /home/broonie/build/linux-stable/arch/arm/include/asm/glue-df.h:107:2: error: #error Unknown data abort handler type /home/broonie/build/linux-stable/arch/arm/include/asm/glue-pf.h:54:2: error: #error Unknown prefetch abort handler type Warnings: /home/broonie/build/linux-stable/arch/arm/include/asm/irqflags.h:11:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:114:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:120:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:121:3: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:127:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:131:35: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:265:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:272:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/system.h:342:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/bitops.h:217:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/swab.h:25:28: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/fpstate.h:32:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/processor.h:82:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/processor.h:102:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/atomic.h:30:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/cachetype.h:28:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/cachetype.h:33:7: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/cacheflush.h:194:7: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] /home/broonie/build/linux-stable/arch/arm/include/asm/cacheflush.h:196:7: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef] ------------------------------------------------------------------------------- x86_64-defconfig : FAIL, 2 errors, 0 warnings, 0 section mismatches Errors: /home/broonie/build/linux-stable/scripts/mod/empty.c:1:0: error: code model kernel does not support PIC mode /home/broonie/build/linux-stable/kernel/bounds.c:1:0: error: code model kernel does not support PIC mode ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches:

6 years, 11 months

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[Linux-stable-mirror] v3.16.52 build: 0 failures 7 warnings (v3.16.52)

by Build bot for Mark Brown

Tree/Branch: v3.16.52 Git describe: v3.16.52 Commit: bde16624c6 Linux 3.16.52 Build Time: 37 min 38 sec Passed: 9 / 9 (100.00 %) Failed: 0 / 9 ( 0.00 %) Errors: 0 Warnings: 7 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 1 warnings 0 mismatches : arm64-allnoconfig 2 warnings 0 mismatches : arm64-allmodconfig 1 warnings 0 mismatches : arm-multi_v5_defconfig 1 warnings 0 mismatches : arm-multi_v7_defconfig 1 warnings 0 mismatches : x86_64-defconfig 4 warnings 0 mismatches : arm-allmodconfig 1 warnings 0 mismatches : arm-allnoconfig 1 warnings 0 mismatches : x86_64-allnoconfig 3 warnings 0 mismatches : arm64-defconfig ------------------------------------------------------------------------------- Warnings Summary: 7 7 ../include/linux/stddef.h:8:14: warning: 'return' with a value, in function returning void 2 ../ipc/sem.c:377:6: warning: '___p1' may be used uninitialized in this function [-Wmaybe-uninitialized] 2 ../drivers/net/ethernet/broadcom/genet/bcmgenet.c:1346:17: warning: unused variable 'kdev' [-Wunused-variable] 1 ../drivers/platform/x86/eeepc-laptop.c:279:10: warning: 'value' may be used uninitialized in this function [-Wmaybe-uninitialized] 1 ../drivers/media/platform/davinci/vpfe_capture.c:291:12: warning: 'vpfe_get_ccdc_image_format' defined but not used [-Wunused-function] 1 ../drivers/media/platform/davinci/vpfe_capture.c:1718:1: warning: label 'unlock_out' defined but not used [-Wunused-label] 1 ../arch/x86/kernel/cpu/common.c:961:13: warning: 'syscall32_cpu_init' defined but not used [-Wunused-function] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- arm64-allnoconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../include/linux/stddef.h:8:14: warning: 'return' with a value, in function returning void ------------------------------------------------------------------------------- arm64-allmodconfig : PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: ../drivers/net/ethernet/broadcom/genet/bcmgenet.c:1346:17: warning: unused variable 'kdev' [-Wunused-variable] ../include/linux/stddef.h:8:14: warning: 'return' with a value, in function returning void ------------------------------------------------------------------------------- arm-multi_v5_defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../include/linux/stddef.h:8:14: warning: 'return' with a value, in function returning void ------------------------------------------------------------------------------- arm-multi_v7_defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../include/linux/stddef.h:8:14: warning: 'return' with a value, in function returning void ------------------------------------------------------------------------------- x86_64-defconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../drivers/platform/x86/eeepc-laptop.c:279:10: warning: 'value' may be used uninitialized in this function [-Wmaybe-uninitialized] ------------------------------------------------------------------------------- arm-allmodconfig : PASS, 0 errors, 4 warnings, 0 section mismatches Warnings: ../drivers/media/platform/davinci/vpfe_capture.c:1718:1: warning: label 'unlock_out' defined but not used [-Wunused-label] ../drivers/media/platform/davinci/vpfe_capture.c:291:12: warning: 'vpfe_get_ccdc_image_format' defined but not used [-Wunused-function] ../include/linux/stddef.h:8:14: warning: 'return' with a value, in function returning void ../drivers/net/ethernet/broadcom/genet/bcmgenet.c:1346:17: warning: unused variable 'kdev' [-Wunused-variable] ------------------------------------------------------------------------------- arm-allnoconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../include/linux/stddef.h:8:14: warning: 'return' with a value, in function returning void ------------------------------------------------------------------------------- x86_64-allnoconfig : PASS, 0 errors, 1 warnings, 0 section mismatches Warnings: ../arch/x86/kernel/cpu/common.c:961:13: warning: 'syscall32_cpu_init' defined but not used [-Wunused-function] ------------------------------------------------------------------------------- arm64-defconfig : PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: ../ipc/sem.c:377:6: warning: '___p1' may be used uninitialized in this function [-Wmaybe-uninitialized] ../ipc/sem.c:377:6: warning: '___p1' may be used uninitialized in this function [-Wmaybe-uninitialized] ../include/linux/stddef.h:8:14: warning: 'return' with a value, in function returning void ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches:

6 years, 11 months

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[Linux-stable-mirror] [PATCH 1/4] fscache: Fix the default for fscache_maybe_release_page()

by David Howells

Fix the default for fscache_maybe_release_page() for when the cookie isn't valid or the page isn't cached. It mustn't return false as that indicates the page cannot yet be freed. The problem with the default is that if, say, there's no cache, but a network filesystem's pages are using up almost all the available memory, a system can OOM because the filesystem ->releasepage() op will not allow them to be released as fscache_maybe_release_page() incorrectly prevents it. This can be tested by writing a sequence of 512MiB files to an AFS mount. It does not affect NFS or CIFS because both of those wrap the call in a check of PG_fscache and it shouldn't bother Ceph as that only has PG_private set whilst writeback is in progress. This might be an issue for 9P, however. Note that the pages aren't entirely stuck. Removing a file or unmounting will clear things because that uses ->invalidatepage() instead. Fixes: 201a15428bd5 ("FS-Cache: Handle pages pending storage that get evicted under OOM conditions") Reported-by: Marc Dionne <marc.dionne(a)auristor.com> Signed-off-by: David Howells <dhowells(a)redhat.com> Reviewed-by: Jeff Layton <jlayton(a)redhat.com> Acked-by: Al Viro <viro(a)zeniv.linux.org.uk> Tested-by: Marc Dionne <marc.dionne(a)auristor.com> cc: stable(a)vger.kernel.org # 2.6.32+ --- include/linux/fscache.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/fscache.h b/include/linux/fscache.h index f4ff47d4a893..fe0c349684fa 100644 --- a/include/linux/fscache.h +++ b/include/linux/fscache.h @@ -755,7 +755,7 @@ bool fscache_maybe_release_page(struct fscache_cookie *cookie, { if (fscache_cookie_valid(cookie) && PageFsCache(page)) return __fscache_maybe_release_page(cookie, page, gfp); - return false; + return true; } /**

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[Linux-stable-mirror] [PATCH 4.14 00/74] 4.14.10-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.14.10 release. There are 74 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Fri Dec 29 16:45:52 UTC 2017. Anything received after that time might be too late. The whole patch series can be found in one patch at: kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.14.10-rc1.gz or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.14.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.14.10-rc1 John Einar Reitan <john.einar(a)gmail.com> Revert "ipmi_si: fix memory leak on new_smi" Yelena Krivosheev <yelena(a)marvell.com> net: mvneta: eliminate wrong call to handle rx descriptor error Yelena Krivosheev <yelena(a)marvell.com> net: mvneta: use proper rxq_number in loop on rx queues Yelena Krivosheev <yelena(a)marvell.com> net: mvneta: clear interface link status on port disable Dan Williams <dan.j.williams(a)intel.com> libnvdimm, pfn: fix start_pad handling for aligned namespaces Vishal Verma <vishal.l.verma(a)intel.com> libnvdimm, btt: Fix an incompatibility in the log layout Dan Williams <dan.j.williams(a)intel.com> libnvdimm, dax: fix 1GB-aligned namespaces vs physical misalignment Maxime Ripard <maxime.ripard(a)free-electrons.com> drm/sun4i: Fix error path handling Chris Wilson <chris(a)chris-wilson.co.uk> drm/i915: Flush pending GTT writes before unbinding Ravi Bangoria <ravi.bangoria(a)linux.vnet.ibm.com> powerpc/perf: Dereference BHRB entries safely Chen-Yu Tsai <wens(a)csie.org> clk: sunxi: sun9i-mmc: Implement reset callback for reset controls Paolo Bonzini <pbonzini(a)redhat.com> kvm: x86: fix RSM when PCID is non-zero Wanpeng Li <wanpeng.li(a)hotmail.com> KVM: X86: Fix load RFLAGS w/o the fixed bit Wanpeng Li <wanpeng.li(a)hotmail.com> KVM: MMU: Fix infinite loop when there is no available mmu page Laurent Vivier <lvivier(a)redhat.com> KVM: PPC: Book3S HV: Fix pending_pri value in kvmppc_xive_get_icp() Cédric Le Goater <clg(a)kaod.org> KVM: PPC: Book3S: fix XIVE migration of pending interrupts Marc Zyngier <marc.zyngier(a)arm.com> KVM: arm/arm64: Fix HYP unmapping going off limits Julien Thierry <julien.thierry(a)arm.com> arm64: kvm: Prevent restoring stale PMSCR_EL1 for vcpu Mika Westerberg <mika.westerberg(a)linux.intel.com> pinctrl: cherryview: Mask all interrupts on Intel_Strago based systems Maxime Chevallier <maxime.chevallier(a)smile.fr> spi: a3700: Fix clk prescaling for coefficient over 15 Ricardo Ribalda Delgado <ricardo.ribalda(a)gmail.com> spi: xilinx: Detect stall with Unknown commands John David Anglin <dave.anglin(a)bell.net> Revert "parisc: Re-enable interrupts early" Helge Deller <deller(a)gmx.de> parisc: Hide Diva-built-in serial aux and graphics card Helge Deller <deller(a)gmx.de> parisc: Fix indenting in puts() Helge Deller <deller(a)gmx.de> parisc: Align os_hpmc_size on word boundary Shaohua Li <shli(a)fb.com> block-throttle: avoid double charge Jens Axboe <axboe(a)kernel.dk> block: unalign call_single_data in struct request Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> PCI / PM: Force devices to D0 in pci_pm_thaw_noirq() Takashi Iwai <tiwai(a)suse.de> ALSA: usb-audio: Fix the missing ctl name suffix at parsing SU Jussi Laako <jussi(a)sonarnerd.net> ALSA: usb-audio: Add native DSD support for Esoteric D-05X Guneshwor Singh <guneshwor.o.singh(a)intel.com> ALSA: hda - Add vendor id for Cannonlake HDMI codec Kailang Yang <kailang(a)realtek.com> ALSA: hda/realtek - Fix Dell AIO LineOut issue Takashi Iwai <tiwai(a)suse.de> ALSA: rawmidi: Avoid racy info ioctl via ctl device Johan Hovold <johan(a)kernel.org> mfd: twl6040: Fix child-node lookup Johan Hovold <johan(a)kernel.org> mfd: twl4030-audio: Fix sibling-node lookup Jon Hunter <jonathanh(a)nvidia.com> mfd: cros ec: spi: Don't send first message too soon Stephan Mueller <smueller(a)chronox.de> crypto: af_alg - fix race accessing cipher request Stephan Mueller <smueller(a)chronox.de> crypto: af_alg - wait for data at beginning of recvmsg Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> crypto: mcryptd - protect the per-CPU queue with a lock Eric Biggers <ebiggers(a)google.com> crypto: skcipher - set walk.iv for zero-length inputs Dan Williams <dan.j.williams(a)intel.com> acpi, nfit: fix health event notification Takashi Iwai <tiwai(a)suse.de> ACPI: APEI / ERST: Fix missing error handling in erst_reader() Thomas Gleixner <tglx(a)linutronix.de> x86/cpu_entry_area: Prevent wraparound in setup_cpu_entry_area_ptes() on 32bit Thomas Gleixner <tglx(a)linutronix.de> init: Invoke init_espfix_bsp() from mm_init() Thomas Gleixner <tglx(a)linutronix.de> x86/cpu_entry_area: Move it out of the fixmap Thomas Gleixner <tglx(a)linutronix.de> x86/cpu_entry_area: Move it to a separate unit Peter Zijlstra <peterz(a)infradead.org> x86/mm: Create asm/invpcid.h Dave Hansen <dave.hansen(a)linux.intel.com> x86/mm: Put MMU to hardware ASID translation in one place Dave Hansen <dave.hansen(a)linux.intel.com> x86/mm: Remove hard-coded ASID limit checks Dave Hansen <dave.hansen(a)linux.intel.com> x86/mm: Move the CR3 construction functions to tlbflush.h Peter Zijlstra <peterz(a)infradead.org> x86/mm: Add comments to clarify which TLB-flush functions are supposed to flush what Peter Zijlstra <peterz(a)infradead.org> x86/mm: Remove superfluous barriers Peter Zijlstra <peterz(a)infradead.org> x86/mm: Use __flush_tlb_one() for kernel memory Peter Zijlstra <peterz(a)infradead.org> x86/microcode: Dont abuse the TLB-flush interface Peter Zijlstra <peterz(a)infradead.org> x86/uv: Use the right TLB-flush API Dave Hansen <dave.hansen(a)linux.intel.com> x86/entry: Rename SYSENTER_stack to CPU_ENTRY_AREA_entry_stack Peter Zijlstra <peterz(a)infradead.org> x86/doc: Remove obvious weirdnesses from the x86 MM layout documentation Andy Lutomirski <luto(a)kernel.org> x86/mm/64: Improve the memory map documentation Thomas Gleixner <tglx(a)linutronix.de> x86/ldt: Prevent LDT inheritance on exec Peter Zijlstra <peterz(a)infradead.org> x86/ldt: Rework locking Thomas Gleixner <tglx(a)linutronix.de> arch, mm: Allow arch_dup_mmap() to fail Andy Lutomirski <luto(a)kernel.org> x86/vsyscall/64: Warn and fail vsyscall emulation in NATIVE mode Andy Lutomirski <luto(a)kernel.org> x86/vsyscall/64: Explicitly set _PAGE_USER in the pagetable hierarchy Thomas Gleixner <tglx(a)linutronix.de> x86/mm/dump_pagetables: Make the address hints correct and readable Thomas Gleixner <tglx(a)linutronix.de> x86/mm/dump_pagetables: Check PAGE_PRESENT for real Thomas Gleixner <tglx(a)linutronix.de> x86/Kconfig: Limit NR_CPUS on 32-bit to a sane amount Ricardo Neri <ricardo.neri-calderon(a)linux.intel.com> x86/insn-eval: Add utility functions to get segment selector Randy Dunlap <rdunlap(a)infradead.org> x86/decoder: Fix and update the opcodes map Mikulas Patocka <mpatocka(a)redhat.com> objtool: Fix 64-bit build on 32-bit host Ingo Molnar <mingo(a)kernel.org> tools/headers: Sync objtool UAPI header Josh Poimboeuf <jpoimboe(a)redhat.com> objtool: Fix cross-build Josh Poimboeuf <jpoimboe(a)redhat.com> objtool: Move kernel headers/code sync check to a script Josh Poimboeuf <jpoimboe(a)redhat.com> objtool: Move synced files to their original relative locations Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Revert "ipv6: grab rt->rt6i_ref before allocating pcpu rt" ------------- Diffstat: Documentation/x86/x86_64/mm.txt | 24 ++- Makefile | 4 +- arch/arm64/kvm/hyp/debug-sr.c | 3 + arch/parisc/boot/compressed/misc.c | 4 +- arch/parisc/kernel/entry.S | 12 +- arch/parisc/kernel/hpmc.S | 1 + arch/powerpc/include/asm/mmu_context.h | 5 +- arch/powerpc/kvm/book3s_xive.c | 7 +- arch/powerpc/perf/core-book3s.c | 8 +- arch/um/include/asm/mmu_context.h | 3 +- arch/unicore32/include/asm/mmu_context.h | 5 +- arch/x86/Kconfig | 3 +- arch/x86/entry/entry_32.S | 12 +- arch/x86/entry/entry_64.S | 4 +- arch/x86/entry/vsyscall/vsyscall_64.c | 38 +++- arch/x86/include/asm/cpu_entry_area.h | 68 +++++++ arch/x86/include/asm/desc.h | 1 + arch/x86/include/asm/espfix.h | 7 +- arch/x86/include/asm/fixmap.h | 71 +------- arch/x86/include/asm/inat.h | 10 + arch/x86/include/asm/invpcid.h | 53 ++++++ arch/x86/include/asm/mmu.h | 4 +- arch/x86/include/asm/mmu_context.h | 54 ++---- arch/x86/include/asm/pgtable_32_types.h | 15 +- arch/x86/include/asm/pgtable_64_types.h | 47 +++-- arch/x86/include/asm/processor.h | 6 +- arch/x86/include/asm/stacktrace.h | 4 +- arch/x86/include/asm/tlbflush.h | 136 +++++++------- arch/x86/kernel/asm-offsets.c | 4 +- arch/x86/kernel/asm-offsets_32.c | 2 +- arch/x86/kernel/cpu/common.c | 100 +--------- arch/x86/kernel/cpu/microcode/intel.c | 13 -- arch/x86/kernel/dumpstack.c | 11 +- arch/x86/kernel/dumpstack_32.c | 6 +- arch/x86/kernel/dumpstack_64.c | 12 +- arch/x86/kernel/ldt.c | 47 ++--- arch/x86/kernel/smpboot.c | 6 +- arch/x86/kernel/traps.c | 6 +- arch/x86/kvm/emulate.c | 32 +++- arch/x86/kvm/mmu.c | 8 +- arch/x86/kvm/x86.c | 2 +- arch/x86/lib/x86-opcode-map.txt | 13 +- arch/x86/mm/Makefile | 2 +- arch/x86/mm/cpu_entry_area.c | 139 ++++++++++++++ arch/x86/mm/dump_pagetables.c | 98 ++++++---- arch/x86/mm/init_32.c | 6 + arch/x86/mm/kasan_init_64.c | 29 +-- arch/x86/mm/pgtable_32.c | 1 + arch/x86/mm/tlb.c | 10 +- arch/x86/platform/uv/tlb_uv.c | 2 +- arch/x86/xen/mmu_pv.c | 2 - block/bio.c | 2 + block/blk-throttle.c | 8 +- crypto/af_alg.c | 6 - crypto/algif_aead.c | 16 +- crypto/algif_skcipher.c | 16 +- crypto/mcryptd.c | 23 +-- crypto/skcipher.c | 10 +- drivers/acpi/apei/erst.c | 2 +- drivers/acpi/nfit/core.c | 9 +- drivers/char/ipmi/ipmi_si_intf.c | 1 - drivers/clk/sunxi/clk-sun9i-mmc.c | 12 ++ drivers/gpu/drm/i915/i915_gem.c | 9 +- drivers/gpu/drm/sun4i/sun4i_tcon.c | 4 +- drivers/mfd/cros_ec_spi.c | 1 + drivers/mfd/twl4030-audio.c | 9 +- drivers/mfd/twl6040.c | 12 +- drivers/net/ethernet/marvell/mvneta.c | 8 +- drivers/nvdimm/btt.c | 201 +++++++++++++++++---- drivers/nvdimm/btt.h | 45 ++++- drivers/nvdimm/pfn_devs.c | 20 +- drivers/parisc/lba_pci.c | 33 ++++ drivers/pci/pci-driver.c | 7 +- drivers/pinctrl/intel/pinctrl-cherryview.c | 16 ++ drivers/spi/spi-armada-3700.c | 8 + drivers/spi/spi-xilinx.c | 11 ++ include/asm-generic/mm_hooks.h | 5 +- include/asm-generic/pgtable.h | 5 + include/crypto/mcryptd.h | 1 + include/linux/bio.h | 2 + include/linux/blk_types.h | 9 +- include/linux/blkdev.h | 2 +- init/main.c | 6 +- kernel/fork.c | 3 +- net/ipv6/route.c | 58 +++--- sound/core/rawmidi.c | 15 +- sound/pci/hda/patch_hdmi.c | 6 +- sound/pci/hda/patch_realtek.c | 35 +++- sound/usb/mixer.c | 27 +-- sound/usb/quirks.c | 7 +- tools/objtool/.gitignore | 2 +- tools/objtool/Makefile | 30 +-- tools/objtool/arch/x86/Build | 10 +- tools/objtool/arch/x86/decode.c | 6 +- .../objtool/arch/x86/{insn => include/asm}/inat.h | 12 +- .../arch/x86/{insn => include/asm}/inat_types.h | 0 .../objtool/arch/x86/{insn => include/asm}/insn.h | 2 +- .../objtool/{ => arch/x86/include/asm}/orc_types.h | 0 tools/objtool/arch/x86/{insn => lib}/inat.c | 2 +- tools/objtool/arch/x86/{insn => lib}/insn.c | 4 +- .../arch/x86/{insn => lib}/x86-opcode-map.txt | 15 +- .../arch/x86/{insn => tools}/gen-insn-attr-x86.awk | 0 tools/objtool/orc.h | 2 +- tools/objtool/orc_dump.c | 7 +- tools/objtool/sync-check.sh | 29 +++ .../perf/util/intel-pt-decoder/x86-opcode-map.txt | 15 +- tools/testing/selftests/x86/ldt_gdt.c | 9 +- virt/kvm/arm/mmu.c | 10 +- 108 files changed, 1292 insertions(+), 693 deletions(-)

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Linux-stable-mirror January 2018