- 13 Jul, 2016 5 commits
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Linus Torvalds authored
Merge branches 'perf-urgent-for-linus' and 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf and timer fixes from Ingo Molnar: "A fix for a posix CPU timers bug, and a perf printk message fix" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86: Fix bogus kernel printk, again * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: posix_cpu_timer: Exit early when process has been reaped
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "This contains three commits to fix memory corruption bugs with certain Apple AirPort cards, plus a fix for a X86_BUG() ID definitions collision bug in asm/cpufeatures.h" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/quirks: Add early quirk to reset Apple AirPort card x86/quirks: Reintroduce scanning of secondary buses x86/quirks: Apply nvidia_bugs quirk only on root bus x86/cpu: Fix duplicated X86_BUG(9) macro
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull core fixes from Ingo Molnar: "Fix an objtool false positive plus an UP kernel memory corruption bug on certain configs" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: cpu/hotplug: Keep enough storage space if SMP=n to avoid array out of bounds scribble objtool: Fix STACK_FRAME_NON_STANDARD macro checking for function symbols
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediaLinus Torvalds authored
Pull media fixes from Mauro Carvalho Chehab: "Two regression fixes: - a regression when handling VIDIOC_CROPCAP at the media core; - a regression at adv7604 that was ignoring pad number in subdev ops" * tag 'media/v4.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: [media] adv7604: Don't ignore pad number in subdev DV timings pad operations [media] v4l2-ioctl: fix stupid mistake in cropcap condition
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Thomas Gleixner authored
Xiaolong Ye reported lock debug warnings triggered by the following commit: 8de4a0066106 ("perf/x86: Convert the core to the hotplug state machine") The bug is the following: the cpuhp_bp_states[] array is cut short when CONFIG_SMP=n, but the dynamically registered callbacks are stored nevertheless and happily scribble outside of the array bounds... We need to store them in case that the state is unregistered so we can invoke the teardown function. That's independent of CONFIG_SMP. Make sure the array is large enough. Reported-by: kernel test robot <xiaolong.ye@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Adam Borowski <kilobyte@angband.pl> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Borislav Petkov <bp@suse.de> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: lkp@01.org Cc: stable@vger.kernel.org Cc: tipbuild@zytor.com Fixes: cff7d378 "cpu/hotplug: Convert to a state machine for the control processor" Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1607122144560.4083@nanosSigned-off-by: Ingo Molnar <mingo@kernel.org>
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- 12 Jul, 2016 4 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull ACPI fixes from Rafael Wysocki: "One ACPI EC driver regression fix (code ordering) and three reverts of ACPICA commits, one that introduced a problem and two unsuccessful attempted fixes on top of it. Specifics: - Fix a recent regression in the ACPI EC driver introduced by a fix of another problem that uncovered a latent code ordering issue in the driver (Lv Zheng). - Revert a recent ACPICA commit that attempted to address a lock ordering issue introduced by a previous fix, but caused Dell Precision 5510 to fail to boot, revert that previous fix too and finally revert the commit that caused the original problem (a deadlock in the ACPICA code) to happen (Rafael Wysocki)" * tag 'acpi-urgent-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: Revert "ACPI 2.0 / AML: Improve module level execution by moving the If/Else/While execution to per-table basis" Revert "ACPICA: Namespace: Fix deadlock triggered by MLC support in dynamic table loading" Revert "ACPICA: Namespace: Fix namespace/interpreter lock ordering" ACPI / EC: Fix code ordering issue in ec_remove_handlers()
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Rafael J. Wysocki authored
* acpica-fixes: Revert "ACPI 2.0 / AML: Improve module level execution by moving the If/Else/While execution to per-table basis" Revert "ACPICA: Namespace: Fix deadlock triggered by MLC support in dynamic table loading" Revert "ACPICA: Namespace: Fix namespace/interpreter lock ordering" * acpi-ec-fixes: ACPI / EC: Fix code ordering issue in ec_remove_handlers()
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Linus Torvalds authored
Merge tag 'qcom-smd-list-voltage' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator fix from Mark Brown: "Fix qcom-smd list voltage issues for msm8974 This commit looks like a cleanup but in fact by causing the core to go down some simplified code paths for noop regulators it avoids a boot time crash for msm8974 platforms which was introduced in v4.7. It has been in -next for a while, the issues in mainline for these platforms weren't flagged up to me until yesterday (I think it took some time to figure out what was going wrong)" * tag 'qcom-smd-list-voltage' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: qcom_smd: Remove list_voltage callback for rpm_smps_ldo_ops_fixed
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds authored
Pull vfs fixes from Al Viro. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: posix_acl: de-union a_refcount and a_rcu nfs_atomic_open(): prevent parallel nfs_lookup() on a negative hashed Use the right predicate in ->atomic_open() instances
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- 11 Jul, 2016 7 commits
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Jeff Layton authored
Currently the two are unioned together, but I don't think that's safe. It looks like get_cached_acl could race with the last put in posix_acl_release. get_cached_acl calls atomic_inc_not_zero on a_refcount, but that field could have already been clobbered by call_rcu, and may no longer be zero. Fix this by de-unioning the two fields. Fixes: b8a7a3a6 (posix_acl: Inode acl caching fixes) Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Alexey Dobriyan authored
Variable "now" seems to be genuinely used unintialized if branch if (CPUCLOCK_PERTHREAD(timer->it_clock)) { is not taken and branch if (unlikely(sighand == NULL)) { is taken. In this case the process has been reaped and the timer is marked as disarmed anyway. So none of the postprocessing of the sample is required. Return right away. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20160707223911.GA26483@p183.telecom.bySigned-off-by: Thomas Gleixner <tglx@linutronix.de>
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Rafael J. Wysocki authored
Revert "ACPI 2.0 / AML: Improve module level execution by moving the If/Else/While execution to per-table basis" Revert commit 3d4b7ae9 (ACPI 2.0 / AML: Improve module level execution by moving the If/Else/While execution to per-table basis) that enabled the execution of module-level AML after loading each table (rather than after all AML tables have been loaded), but overlooked locking issues resulting from that change. Fixes: 3d4b7ae9 (ACPI 2.0 / AML: Improve module level execution by moving the If/Else/While execution to per-table basis) Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Rafael J. Wysocki authored
Revert commit 2f38b1b1 (ACPICA: Namespace: Fix deadlock triggered by MLC support in dynamic table loading) that attempted to fix a deadlock issue introduced by a previous commit, but it led to a lock ordering inconsistency that caused further problems to appear. Fixes: 2f38b1b1 (ACPICA: Namespace: Fix deadlock triggered by MLC support in dynamic table loading) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Rafael J. Wysocki authored
Revert commit 45209046 (ACPICA: Namespace: Fix namespace/interpreter lock ordering) that renders Dell Precision 5510 with the latest (1.2.10) BIOS applied unable to boot. Fixes: 45209046 (ACPICA: Namespace: Fix namespace/interpreter lock ordering) Link: https://bugzilla.kernel.org/show_bug.cgi?id=121701Reported-by: Greg White <gwhite@kupulau.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Linus Torvalds authored
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Hugh Dickins authored
The well-spotted fallocate undo fix is good in most cases, but not when fallocate failed on the very first page. index 0 then passes lend -1 to shmem_undo_range(), and that has two bad effects: (a) that it will undo every fallocation throughout the file, unrestricted by the current range; but more importantly (b) it can cause the undo to hang, because lend -1 is treated as truncation, which makes it keep on retrying until every page has gone, but those already fully instantiated will never go away. Big thank you to xfstests generic/269 which demonstrates this. Fixes: b9b4bb26 ("tmpfs: don't undo fallocate past its last page") Cc: stable@vger.kernel.org Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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- 10 Jul, 2016 6 commits
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Lukas Wunner authored
The EFI firmware on Macs contains a full-fledged network stack for downloading OS X images from osrecovery.apple.com. Unfortunately on Macs introduced 2011 and 2012, EFI brings up the Broadcom 4331 wireless card on every boot and leaves it enabled even after ExitBootServices has been called. The card continues to assert its IRQ line, causing spurious interrupts if the IRQ is shared. It also corrupts memory by DMAing received packets, allowing for remote code execution over the air. This only stops when a driver is loaded for the wireless card, which may be never if the driver is not installed or blacklisted. The issue seems to be constrained to the Broadcom 4331. Chris Milsted has verified that the newer Broadcom 4360 built into the MacBookPro11,3 (2013/2014) does not exhibit this behaviour. The chances that Apple will ever supply a firmware fix for the older machines appear to be zero. The solution is to reset the card on boot by writing to a reset bit in its mmio space. This must be done as an early quirk and not as a plain vanilla PCI quirk to successfully combat memory corruption by DMAed packets: Matthew Garrett found out in 2012 that the packets are written to EfiBootServicesData memory (http://mjg59.dreamwidth.org/11235.html). This type of memory is made available to the page allocator by efi_free_boot_services(). Plain vanilla PCI quirks run much later, in subsys initcall level. In-between a time window would be open for memory corruption. Random crashes occurring in this time window and attributed to DMAed packets have indeed been observed in the wild by Chris Bainbridge. When Matthew Garrett analyzed the memory corruption issue in 2012, he sought to fix it with a grub quirk which transitions the card to D3hot: http://git.savannah.gnu.org/cgit/grub.git/commit/?id=9d34bb85da56 This approach does not help users with other bootloaders and while it may prevent DMAed packets, it does not cure the spurious interrupts emanating from the card. Unfortunately the card's mmio space is inaccessible in D3hot, so to reset it, we have to undo the effect of Matthew's grub patch and transition the card back to D0. Note that the quirk takes a few shortcuts to reduce the amount of code: The size of BAR 0 and the location of the PM capability is identical on all affected machines and therefore hardcoded. Only the address of BAR 0 differs between models. Also, it is assumed that the BCMA core currently mapped is the 802.11 core. The EFI driver seems to always take care of this. Michael Büsch, Bjorn Helgaas and Matt Fleming contributed feedback towards finding the best solution to this problem. The following should be a comprehensive list of affected models: iMac13,1 2012 21.5" [Root Port 00:1c.3 = 8086:1e16] iMac13,2 2012 27" [Root Port 00:1c.3 = 8086:1e16] Macmini5,1 2011 i5 2.3 GHz [Root Port 00:1c.1 = 8086:1c12] Macmini5,2 2011 i5 2.5 GHz [Root Port 00:1c.1 = 8086:1c12] Macmini5,3 2011 i7 2.0 GHz [Root Port 00:1c.1 = 8086:1c12] Macmini6,1 2012 i5 2.5 GHz [Root Port 00:1c.1 = 8086:1e12] Macmini6,2 2012 i7 2.3 GHz [Root Port 00:1c.1 = 8086:1e12] MacBookPro8,1 2011 13" [Root Port 00:1c.1 = 8086:1c12] MacBookPro8,2 2011 15" [Root Port 00:1c.1 = 8086:1c12] MacBookPro8,3 2011 17" [Root Port 00:1c.1 = 8086:1c12] MacBookPro9,1 2012 15" [Root Port 00:1c.1 = 8086:1e12] MacBookPro9,2 2012 13" [Root Port 00:1c.1 = 8086:1e12] MacBookPro10,1 2012 15" [Root Port 00:1c.1 = 8086:1e12] MacBookPro10,2 2012 13" [Root Port 00:1c.1 = 8086:1e12] For posterity, spurious interrupts caused by the Broadcom 4331 wireless card resulted in splats like this (stacktrace omitted): irq 17: nobody cared (try booting with the "irqpoll" option) handlers: [<ffffffff81374370>] pcie_isr [<ffffffffc0704550>] sdhci_irq [sdhci] threaded [<ffffffffc07013c0>] sdhci_thread_irq [sdhci] [<ffffffffc0a0b960>] azx_interrupt [snd_hda_codec] Disabling IRQ #17 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=79301 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=111781 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=728916 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=895951#c16 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1009819 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1098621 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1149632#c5 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1279130 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1332732 Tested-by: Konstantin Simanov <k.simanov@stlk.ru> # [MacBookPro8,1] Tested-by: Lukas Wunner <lukas@wunner.de> # [MacBookPro9,1] Tested-by: Bryan Paradis <bryan.paradis@gmail.com> # [MacBookPro9,2] Tested-by: Andrew Worsley <amworsley@gmail.com> # [MacBookPro10,1] Tested-by: Chris Bainbridge <chris.bainbridge@gmail.com> # [MacBookPro10,2] Signed-off-by: Lukas Wunner <lukas@wunner.de> Acked-by: Rafał Miłecki <zajec5@gmail.com> Acked-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Andy Lutomirski <luto@kernel.org> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Chris Milsted <cmilsted@redhat.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Michael Buesch <m@bues.ch> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yinghai Lu <yinghai@kernel.org> Cc: b43-dev@lists.infradead.org Cc: linux-pci@vger.kernel.org Cc: linux-wireless@vger.kernel.org Cc: stable@vger.kernel.org Cc: stable@vger.kernel.org # 123456789abc: x86/quirks: Apply nvidia_bugs quirk only on root bus Cc: stable@vger.kernel.org # 123456789abc: x86/quirks: Reintroduce scanning of secondary buses Link: http://lkml.kernel.org/r/48d0972ac82a53d460e5fce77a07b2560db95203.1465690253.git.lukas@wunner.de [ Did minor readability edits. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Lukas Wunner authored
We used to scan secondary buses until the following commit that was applied in 2009: 8659c406 ("x86: only scan the root bus in early PCI quirks") which commit constrained early quirks to the root bus only. Its motivation was to prevent application of the nvidia_bugs quirk on secondary buses. We're about to add a quirk to reset the Broadcom 4331 wireless card on 2011/2012 Macs, which is located on a secondary bus behind a PCIe root port. To facilitate that, reintroduce scanning of secondary buses. The commit message of 8659c406 notes that scanning only the root bus "saves quite some unnecessary scanning work". The algorithm used prior to 8659c406 was particularly time consuming because it scanned buses 0 to 31 brute force. To avoid lengthening boot time, employ a recursive strategy which only scans buses that are actually reachable from the root bus. Yinghai Lu pointed out that the secondary bus number read from a bridge's config space may be invalid, in particular a value of 0 would cause an infinite loop. The PCI core goes beyond that and recurses to a child bus only if its bus number is greater than the parent bus number (see pci_scan_bridge()). Since the root bus is numbered 0, this implies that secondary buses may not be 0. Do the same on early scanning. If this algorithm is found to significantly impact boot time or cause infinite loops on broken hardware, it would be possible to limit its recursion depth: The Broadcom 4331 quirk applies at depth 1, all others at depth 0, so the bus need not be scanned deeper than that for now. An alternative approach would be to revert to scanning only the root bus, and apply the Broadcom 4331 quirk to the root ports 8086:1c12, 8086:1e12 and 8086:1e16. Apple always positioned the card behind either of these three ports. The quirk would then check presence of the card in slot 0 below the root port and do its deed. Signed-off-by: Lukas Wunner <lukas@wunner.de> Cc: Andy Lutomirski <luto@kernel.org> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yinghai Lu <yinghai@kernel.org> Cc: linux-pci@vger.kernel.org Link: http://lkml.kernel.org/r/f0daa70dac1a9b2483abdb31887173eb6ab77bdf.1465690253.git.lukas@wunner.deSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Lukas Wunner authored
Since the following commit: 8659c406 ("x86: only scan the root bus in early PCI quirks") ... early quirks are only applied to devices on the root bus. The motivation was to prevent application of the nvidia_bugs quirk on secondary buses. We're about to reintroduce scanning of secondary buses for a quirk to reset the Broadcom 4331 wireless card on 2011/2012 Macs. To prevent regressions, open code the requirement to apply nvidia_bugs only on the root bus. Signed-off-by: Lukas Wunner <lukas@wunner.de> Cc: Andy Lutomirski <luto@kernel.org> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/4d5477c1d76b2f0387a780f2142bbcdd9fee869b.1465690253.git.lukas@wunner.deSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Vegard Nossum authored
This showed up as "6Failed to access..." here. Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Chen Yucong <slaoub@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 1b74dde7 ("x86/cpu: Convert printk(KERN_<LEVEL> ...) to pr_<level>(...)") Link: http://lkml.kernel.org/r/1468170841-17045-1-git-send-email-vegard.nossum@oracle.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds authored
Pull MIPS fix from Ralf Baechle: "Another week with just a single 4.7 fix. This fixes a possible 'loss' of the huge page bit from pmd on permission change" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: Fix page table corruption on THP permission changes.
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Josh Poimboeuf authored
Mathieu Desnoyers reported that the STACK_FRAME_NON_STANDARD macro wasn't working with the lttng_filter_interpret_bytecode() function in the lttng-modules code. Usually the relocation created by STACK_FRAME_NON_STANDARD creates a reference to a section symbol like this: Offset Type Value Addend Name 000000000000000000 X86_64_64 000000000000000000 +3136 .text But in this case it created a reference to a function symbol: Offset Type Value Addend Name 000000000000000000 X86_64_64 0x00000000000003a0 +0 lttng_filter_interpret_bytecode To be honest I have no idea what causes gcc to decide to do one over the other. But both are valid ELF, so add support for the function symbol. Reported-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: lttng-dev@lists.lttng.org Link: http://lkml.kernel.org/r/9cee42843bc6d94e990a152e4e0319cfdf6756ef.1466023450.git.jpoimboe@redhat.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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- 09 Jul, 2016 2 commits
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Dave Hansen authored
cpufeatures.h currently defines X86_BUG(9) twice on 32-bit: #define X86_BUG_NULL_SEG X86_BUG(9) /* Nulling a selector preserves the base */ ... #ifdef CONFIG_X86_32 #define X86_BUG_ESPFIX X86_BUG(9) /* "" IRET to 16-bit SS corrupts ESP/RSP high bits */ #endif I think what happened was that this added the X86_BUG_ESPFIX, but in an #ifdef below most of the bugs: 58a5aac5 x86/entry/32: Introduce and use X86_BUG_ESPFIX instead of paravirt_enabled Then this came along and added X86_BUG_NULL_SEG, but collided with the earlier one that did the bug below the main block defining all the X86_BUG()s. 7a5d6704 x86/cpu: Probe the behavior of nulling out a segment at boot time Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Andy Lutomirski <luto@kernel.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave@sr71.net> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20160618001503.CEE1B141@viggo.jf.intel.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "Three fixes. One is the qla24xx MSI regression, one is a theoretical problem over blacklist matching, which would bite USB badly if it ever triggered and one is a system hang with a particular type of IPR device" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: qla2xxx: Fix NULL pointer deref in QLA interrupt SCSI: fix new bug in scsi_dev_info_list string matching ipr: Clear interrupt on croc/crocodile when running with LSI
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- 08 Jul, 2016 16 commits
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Lv Zheng authored
There is an order issue in ec_remove_handlers() that acpi_ec_stop() is called before removing the operation region handler. That is incorrect, because the operation region handler removal triggers _REG(DISCONNECT) which may result in new EC transactions to carry out. That existing issue has been triggered by the following commit: Commit: dcf15cbd Subject: ACPI / EC: Fix a boot EC regresion by restoring boot EC which changed the driver to call ec_remove_handlers() after invoking _REG(CONNECT), so the issue has become visible. Fixes: dcf15cbd (ACPI / EC: Fix a boot EC regresion by restoring boot EC) Link: https://bugzilla.kernel.org/show_bug.cgi?id=102421Reported-and-tested-by: Wolfram Sang <wsa@the-dreams.de> Reported-by: Nicholas <nkudriavtsev@gmail.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> [ rjw: Changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Linus Torvalds authored
Merge tag 'ecryptfs-4.7-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs Pull eCryptfs fixes from Tyler Hicks: "Provide a more concise fix for CVE-2016-1583: - Additionally fixes linux-stable regressions caused by the cherry-picking of the original fix Some very minor changes that have queued up: - Fix typos in code comments - Remove unnecessary check for NULL before destroying kmem_cache" * tag 'ecryptfs-4.7-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs: ecryptfs: don't allow mmap when the lower fs doesn't support it Revert "ecryptfs: forbid opening files without mmap handler" ecryptfs: fix spelling mistakes eCryptfs: fix typos in comment ecryptfs: drop null test before destroy functions
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommuLinus Torvalds authored
Pull IOMMU fixes from Joerg Roedel: "Two Fixes: - Intel VT-d fix for a suspend/resume issue, introduced with the scalability improvements in this cycle. - AMD IOMMU fix for systems that have unity mappings defined. There was a race where translation got enabled before the unity mappings were in place. This issue was seen on some HP servers" * tag 'iommu-fixes-v4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: iommu/amd: Fix unity mapping initialization race iommu/vt-d: Fix infinite loop in free_all_cpu_cached_iovas
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tipLinus Torvalds authored
Pull xen bug fixes from David Vrabel: - Fix two bugs in the handling of xenbus transactions. - Make the xen acpi driver compatible with Xen 4.7. * tag 'for-linus-4.7b-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/acpi: allow xen-acpi-processor driver to load on Xen 4.7 xenbus: simplify xenbus_dev_request_and_reply() xenbus: don't bail early from xenbus_dev_request_and_reply() xenbus: don't BUG() on user mode induced condition
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fixes from Will Deacon: "A couple of late fixes here, but one that we've been sitting on for a few weeks while the details were worked out. Specifically, we now enforce USER_DS on taking exceptions whilst in the kernel, which avoids leaking kernel data to userspace through things like perf. The other patch is an update to a workaround for a hardware erratum on some Cavium SoCs. Summary: - Enforce USER_DS on exception entry from EL1 - Apply workaround for Cavium errata #27456 on Thunderx-81xx parts" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: Enable workaround for Cavium erratum 27456 on thunderx-81xx arm64: kernel: Save and restore UAO and addr_limit on exception entry
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "Three fixes: - A boot crash fix with certain configs - a MAINTAINERS entry update - Documentation typo fixes" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/Documentation: Fix various typos in Documentation/x86/ files x86/amd_nb: Fix boot crash on non-AMD systems MAINTAINERS: Update the Calgary IOMMU entry
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fixes from Ingo Molnar: "Two load-balancing fixes for cgroups-intense workloads" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Fix calc_cfs_shares() fixed point arithmetics width confusion sched/fair: Fix effective_load() to consistently use smoothed load
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Ingo Molnar: "Various fixes: - 32-bit callgraph bug fix - suboptimal event group scheduling bug fix - event constraint fixes for Broadwell/Skylake - RAPL module name collision fix" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/core: Fix pmu::filter_match for SW-led groups x86/perf/intel/rapl: Fix module name collision with powercap intel-rapl perf/x86: Fix 32-bit perf user callgraph collection perf/x86/intel: Update event constraints when HT is off
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fixes from Ingo Molnar: "Two MIPS-GIC irqchip driver fixes to unbreak certain MIPS boards" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/mips-gic: Match IPI IRQ domain by bus token only irqchip/mips-gic: Map to VPs using HW VPNum
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpioLinus Torvalds authored
Pull GPIO fixes from Linus Walleij: "I don't like to toss in last minute patches, but these are all for things that are broken, and have bitten people for real. Two of them go into stable. Maybe all of them if the compile test problem is a pain in the ass also for stable folks. Final (hopefully) GPIO fixes for v4.7: - Fix an oops on the Asus Eee PC 1201 - Revert a patch trying to split GPIO parsing and GPIO configuration - Revert a too liberal compile testing thing" * tag 'gpio-v4.7-5' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: Revert "gpio: gpiolib-of: Allow compile testing" Revert "gpiolib: Split GPIO flags parsing and GPIO configuration" gpio: sch: Fix Oops on module load on Asus Eee PC 1201
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull drm fixes from Dave Airlie: "One nouveau fix, and a few AMD Polaris fixes and some Allwinner fixes. I've got some vmware fixes that I might send separate over the weekend, they fix some black screens, but I'm still debating them" * tag 'drm-fixes-for-v4.7-rc7' of git://people.freedesktop.org/~airlied/linux: drm/amd/powerplay: Update CKS on/ CKS off voltage offset calculation. drm/amd/powerplay: fix bug that get wrong polaris evv voltage. drm/amd/powerplay: incorrectly use of the function return value drm/amd/powerplay: fix incorrect voltage table value for tonga drm/amd/powerplay: fix incorrect voltage table value for polaris10 drm/nouveau/disp/sor/gf119: select correct sor when poking training pattern gpu: drm: sun4i_drv: add missing of_node_put after calling of_parse_phandle drm/sun4i: Send vblank event when the CRTC is disabled drm/sun4i: Report proper vblank
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Jeff Mahoney authored
There are legitimate reasons to disallow mmap on certain files, notably in sysfs or procfs. We shouldn't emulate mmap support on file systems that don't offer support natively. CVE-2016-1583 Signed-off-by: Jeff Mahoney <jeffm@suse.com> Cc: stable@vger.kernel.org [tyhicks: clean up f_op check by using ecryptfs_file_to_lower()] Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
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Jan Beulich authored
As of Xen 4.7 PV CPUID doesn't expose either of CPUID[1].ECX[7] and CPUID[0x80000007].EDX[7] anymore, causing the driver to fail to load on both Intel and AMD systems. Doing any kind of hardware capability checks in the driver as a prerequisite was wrong anyway: With the hypervisor being in charge, all such checking should be done by it. If ACPI data gets uploaded despite some missing capability, the hypervisor is free to ignore part or all of that data. Ditch the entire check_prereq() function, and do the only valid check (xen_initial_domain()) in the caller in its place. Signed-off-by: Jan Beulich <jbeulich@suse.com> Cc: <stable@vger.kernel.org> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
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Jan Beulich authored
No need to retain a local copy of the full request message, only the type is really needed. Signed-off-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
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Jan Beulich authored
xenbus_dev_request_and_reply() needs to track whether a transaction is open. For XS_TRANSACTION_START messages it calls transaction_start() and for XS_TRANSACTION_END messages it calls transaction_end(). If sending an XS_TRANSACTION_START message fails or responds with an an error, the transaction is not open and transaction_end() must be called. If sending an XS_TRANSACTION_END message fails, the transaction is still open, but if an error response is returned the transaction is closed. Commit 027bd7e8 ("xen/xenbus: Avoid synchronous wait on XenBus stalling shutdown/restart") introduced a regression where failed XS_TRANSACTION_START messages were leaving the transaction open. This can cause problems with suspend (and migration) as all transactions must be closed before suspending. It appears that the problematic change was added accidentally, so just remove it. Signed-off-by: Jan Beulich <jbeulich@suse.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: <stable@vger.kernel.org> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-securityLinus Torvalds authored
Pull apparmor fix from James Morris. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: apparmor: fix oops, validate buffer size in apparmor_setprocattr()
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