- 22 Aug, 2016 5 commits
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Paul Moore authored
[ Upstream commit 0e0e3677 ] It seems risky to always rely on the caller to ensure the socket's address family is correct before passing it to the NetLabel kAPI, especially since we see at least one LSM which didn't. Add address family checks to the *_delattr() functions to help prevent future problems. Cc: <stable@vger.kernel.org> Reported-by:
Maninder Singh <maninder1.s@samsung.com> Signed-off-by:
Paul Moore <paul@paul-moore.com> Signed-off-by:
Sasha Levin <alexander.levin@verizon.com>
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Javier Martinez Canillas authored
[ Upstream commit 6311f126 ] When s5p_mfc_remove() calls put_device() for the reserved memory region devs, the driver core warns that the dev doesn't have a release callback: WARNING: CPU: 0 PID: 591 at drivers/base/core.c:251 device_release+0x8c/0x90 Device 's5p-mfc-l' does not have a release() function, it is broken and must be fixed. Also, the declared DMA memory using dma_declare_coherent_memory() isn't relased so add a dev .release that calls dma_release_declared_memory(). Cc: <stable@vger.kernel.org> Fixes: 6e83e6e2 ("[media] s5p-mfc: Fix kernel warning on memory init") Signed-off-by:
Javier Martinez Canillas <javier@osg.samsung.com> Tested-by:
Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by:
Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by:
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Javier Martinez Canillas authored
[ Upstream commit 29debab0 ] The devices don't have a name set, so makes dev_name() returns NULL which makes harder to identify the devices that are causing issues, for example: WARNING: CPU: 2 PID: 616 at drivers/base/core.c:251 device_release+0x8c/0x90 Device '(null)' does not have a release() function, it is broken and must be fixed. And after setting the device name: WARNING: CPU: 0 PID: 591 at drivers/base/core.c:251 device_release+0x8c/0x90 Device 's5p-mfc-l' does not have a release() function, it is broken and must be fixed. Cc: <stable@vger.kernel.org> Fixes: 6e83e6e2 ("[media] s5p-mfc: Fix kernel warning on memory init") Signed-off-by:
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Roderick Colenbrander authored
[ Upstream commit 67f8ecc5 ] Many devices use userspace bluetooth stacks like BlueZ or Bluedroid in combination with uhid. If any of these stacks is used with a HID device for which the driver performs a HID request as part .probe (or technically another HID operation), this results in a deadlock situation. The deadlock results in a 5 second timeout for I/O operations in HID drivers, so isn't fatal, but none of the I/O operations have a chance of succeeding. The root cause for the problem is that uhid only allows for one request to be processed at a time per uhid instance and locks out other operations. This means that if a user space is creating a new HID device through 'UHID_CREATE', which ultimately triggers '.probe' through the HID layer. Then any HID request e.g. a read for calibration data would trigger a HID operation on uhid again, but it won't go out to userspace, because it is still stuck in UHID_CREATE. In addition bluetooth stacks are typically single threaded, so they wouldn't be able to handle any requests while waiting on uhid. Lucikly the UHID spec is somewhat flexible and allows for fixing the issue, without breaking user space. The idea which the patch implements as discussed with David Herrmann is to decouple adding of a hid device (which triggers .probe) from UHID_CREATE. The work will kick off roughly once UHID_CREATE completed (or else will wait a tiny bit of time in .probe for a lock). A HID driver has to call HID to call 'hid_hw_start()' as part of .probe once it is ready for I/O, which triggers UHID_START to user space. Any HID operations should function now within .probe and won't deadlock because userspace is stuck on UHID_CREATE. We verified this patch on Bluedroid with Android 6.0 and on desktop Linux with BlueZ stacks. Prior to the patch they had the deadlock issue. [jkosina@suse.cz: reword subject] Signed-off-by:
Roderick Colenbrander <roderick.colenbrander@sony.com> Cc: stable@vger.kernel.org Signed-off-by:
Jiri Kosina <jkosina@suse.cz> Signed-off-by:
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Sasha Levin authored
This reverts commit bcb66592. Signed-off-by:
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- 09 Aug, 2016 1 commit
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Sasha Levin authored
Signed-off-by:
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- 08 Aug, 2016 23 commits
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Lukas Wunner authored
[ Upstream commit 850c3210 ] 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> Signed-off-by:
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Lukas Wunner authored
[ Upstream commit 447d29d1 ] 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:
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Jiri Slaby authored
[ Upstream commit 368301f2 ] With this command sequence: modprobe plip modprobe pps_parport rmmod pps_parport the partport_pps modules causes this crash: BUG: unable to handle kernel NULL pointer dereference at (null) IP: parport_detach+0x1d/0x60 [pps_parport] Oops: 0000 [#1] SMP ... Call Trace: parport_unregister_driver+0x65/0xc0 [parport] SyS_delete_module+0x187/0x210 The sequence that builds up to this is: 1) plip is loaded and takes the parport device for exclusive use: plip0: Parallel port at 0x378, using IRQ 7. 2) pps_parport then fails to grab the device: pps_parport: parallel port PPS client parport0: cannot grant exclusive access for device pps_parport pps_parport: couldn't register with parport0 3) rmmod of pps_parport is then killed because it tries to access pardev->name, but pardev (taken from port->cad) is NULL. So add a check for NULL in the test there too. Link: http://lkml.kernel.org/r/20160714115245.12651-1-jslaby@suse.czSigned-off-by:
Jiri Slaby <jslaby@suse.cz> Acked-by:
Rodolfo Giometti <giometti@enneenne.com> Cc: <stable@vger.kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Andrey Ryabinin authored
[ Upstream commit 3cb9185c ] radix_tree_iter_retry() resets slot to NULL, but it doesn't reset tags. Then NULL slot and non-zero iter.tags passed to radix_tree_next_slot() leading to crash: RIP: radix_tree_next_slot include/linux/radix-tree.h:473 find_get_pages_tag+0x334/0x930 mm/filemap.c:1452 .... Call Trace: pagevec_lookup_tag+0x3a/0x80 mm/swap.c:960 mpage_prepare_extent_to_map+0x321/0xa90 fs/ext4/inode.c:2516 ext4_writepages+0x10be/0x2b20 fs/ext4/inode.c:2736 do_writepages+0x97/0x100 mm/page-writeback.c:2364 __filemap_fdatawrite_range+0x248/0x2e0 mm/filemap.c:300 filemap_write_and_wait_range+0x121/0x1b0 mm/filemap.c:490 ext4_sync_file+0x34d/0xdb0 fs/ext4/fsync.c:115 vfs_fsync_range+0x10a/0x250 fs/sync.c:195 vfs_fsync fs/sync.c:209 do_fsync+0x42/0x70 fs/sync.c:219 SYSC_fdatasync fs/sync.c:232 SyS_fdatasync+0x19/0x20 fs/sync.c:230 entry_SYSCALL_64_fastpath+0x23/0xc1 arch/x86/entry/entry_64.S:207 We must reset iterator's tags to bail out from radix_tree_next_slot() and go to the slow-path in radix_tree_next_chunk(). Fixes: 46437f9a ("radix-tree: fix race in gang lookup") Link: http://lkml.kernel.org/r/1468495196-10604-1-git-send-email-aryabinin@virtuozzo.comSigned-off-by:
Andrey Ryabinin <aryabinin@virtuozzo.com> Reported-by:
Dmitry Vyukov <dvyukov@google.com> Acked-by:
Konstantin Khlebnikov <koct9i@gmail.com> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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Ilya Dryomov authored
[ Upstream commit 930c5328 ] Currently, osd_weight and osd_state fields are updated in the encoding order. This is wrong, because an incremental map may look like e.g. new_up_client: { osd=6, addr=... } # set osd_state and addr new_state: { osd=6, xorstate=EXISTS } # clear osd_state Suppose osd6's current osd_state is EXISTS (i.e. osd6 is down). After applying new_up_client, osd_state is changed to EXISTS | UP. Carrying on with the new_state update, we flip EXISTS and leave osd6 in a weird "!EXISTS but UP" state. A non-existent OSD is considered down by the mapping code 2087 for (i = 0; i < pg->pg_temp.len; i++) { 2088 if (ceph_osd_is_down(osdmap, pg->pg_temp.osds[i])) { 2089 if (ceph_can_shift_osds(pi)) 2090 continue; 2091 2092 temp->osds[temp->size++] = CRUSH_ITEM_NONE; and so requests get directed to the second OSD in the set instead of the first, resulting in OSD-side errors like: [WRN] : client.4239 192.168.122.21:0/2444980242 misdirected client.4239.1:2827 pg 2.5df899f2 to osd.4 not [1,4,6] in e680/680 and hung rbds on the client: [ 493.566367] rbd: rbd0: write 400000 at 11cc00000 (0) [ 493.566805] rbd: rbd0: result -6 xferred 400000 [ 493.567011] blk_update_request: I/O error, dev rbd0, sector 9330688 The fix is to decouple application from the decoding and: - apply new_weight first - apply new_state before new_up_client - twiddle osd_state flags if marking in - clear out some of the state if osd is destroyed Fixes: http://tracker.ceph.com/issues/14901 Cc: stable@vger.kernel.org # 3.15+: 6dd74e44: libceph: set 'exists' flag for newly up osd Cc: stable@vger.kernel.org # 3.15+ Signed-off-by:
Ilya Dryomov <idryomov@gmail.com> Reviewed-by:
Josh Durgin <jdurgin@redhat.com> Signed-off-by:
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Yan, Zheng authored
[ Upstream commit 6dd74e44 ] Signed-off-by:
Yan, Zheng <zyan@redhat.com> Reviewed-by:
Sage Weil <sage@redhat.com> Signed-off-by:
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Maxim Patlasov authored
[ Upstream commit cfc9fde0 ] The upper dentry may become stale before we call ovl_lock_rename_workdir. For example, someone could (mistakenly or maliciously) manually unlink(2) it directly from upperdir. To ensure it is not stale, let's lookup it after ovl_lock_rename_workdir and and check if it matches the upper dentry. Essentially, it is the same problem and similar solution as in commit 11f37104 ("ovl: verify upper dentry before unlink and rename"). Signed-off-by:
Maxim Patlasov <mpatlasov@virtuozzo.com> Signed-off-by:
Miklos Szeredi <mszeredi@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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Dmitry Torokhov authored
[ Upstream commit 510cccb5 ] The size of individual keymap in drivers/tty/vt/keyboard.c is NR_KEYS, which is currently 256, whereas number of keys/buttons in input device (and therefor in key_down) is much larger - KEY_CNT - 768, and that can cause out-of-bound access when we do sym = U(key_maps[0][k]); with large 'k'. To fix it we should not attempt iterating beyond smaller of NR_KEYS and KEY_CNT. Also while at it let's switch to for_each_set_bit() instead of open-coding it. Reported-by:
Sasha Levin <sasha.levin@oracle.com> Reviewed-by:
Guenter Roeck <linux@roeck-us.net> Cc: stable@vger.kernel.org Signed-off-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by:
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Taras Kondratiuk authored
[ Upstream commit f68381a7 ] The code that fills packed command header assumes that CPU runs in little-endian mode. Hence the header is malformed in big-endian mode and causes MMC data transfer errors: [ 563.200828] mmcblk0: error -110 transferring data, sector 2048, nr 8, cmd response 0x900, card status 0xc40 [ 563.219647] mmcblk0: packed cmd failed, nr 2, sectors 16, failure index: -1 Convert header data to LE. Signed-off-by:
Taras Kondratiuk <takondra@cisco.com> Fixes: ce39f9d1 ("mmc: support packed write command for eMMC4.5 devices") Cc: <stable@vger.kernel.org> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by:
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James Patrick-Evans authored
[ Upstream commit aa93d1fe ] Fix a memory leak on probe error of the airspy usb device driver. The problem is triggered when more than 64 usb devices register with v4l2 of type VFL_TYPE_SDR or VFL_TYPE_SUBDEV. The memory leak is caused by the probe function of the airspy driver mishandeling errors and not freeing the corresponding control structures when an error occours registering the device to v4l2 core. A badusb device can emulate 64 of these devices, and then through continual emulated connect/disconnect of the 65th device, cause the kernel to run out of RAM and crash the kernel, thus causing a local DOS vulnerability. Fixes CVE-2016-5400 Signed-off-by:
James Patrick-Evans <james@jmp-e.com> Reviewed-by:
Kees Cook <keescook@chromium.org> Cc: stable@vger.kernel.org # 3.17+ Signed-off-by:
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Awais Belal authored
[ Upstream commit d716fb03 ] This allows the device to correctly show up as ATI HDMI rather than a generic one and allows the driver to use the available caps. Signed-off-by:
Awais Belal <awais_belal@mentor.com> Cc: <stable@vger.kernel.org> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Maruthi Srinivas Bayyavarapu authored
[ Upstream commit 5022813d ] Fixes audio problems on newer asics Signed-off-by:
Maruthi Bayyavarapu <maruthi.bayyavarapu@amd.com> Cc: stable@vger.kernel.org Signed-off-by:
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Sasha Levin authored
[ Upstream commit ab58d8cc ] register_vga_switcheroo() sets the PM ops from the hda structure which is freed later in azx_free. Make sure that these ops are cleared. Caught by KASAN, initially noticed due to a general protection fault. Fixes: 246efa4a ("snd/hda: add runtime suspend/resume on optimus support (v4)") Signed-off-by:
Peter Wu <peter@lekensteyn.nl> Cc: <stable@vger.kernel.org> Signed-off-by:
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Alexey Dobriyan authored
[ Upstream commit 2c13ce8f ] 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> Signed-off-by:
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Lukas Wunner authored
[ Upstream commit abb2bafd ] 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:
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:
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Dmitri Epshtein authored
[ Upstream commit 06708f81 ] Commit aebea2ba ("net: mvneta: fix Tx interrupt delay") intended to set coalescing threshold to a value guaranteeing interrupt generation per each sent packet, so that buffers can be released with no delay. In fact setting threshold to '1' was wrong, because it causes interrupt every two packets. According to the documentation a reason behind it is following - interrupt occurs once sent buffers counter reaches a value, which is higher than one specified in MVNETA_TXQ_SIZE_REG(q). This behavior was confirmed during tests. Also when testing the SoC working as a NAS device, better performance was observed with int-per-packet, as it strongly depends on the fact that all transmitted packets are released immediately. This commit enables NETA controller work in interrupt per sent packet mode by setting coalescing threshold to 0. Signed-off-by:
Dmitri Epshtein <dima@marvell.com> Signed-off-by:
Marcin Wojtas <mw@semihalf.com> Cc: <stable@vger.kernel.org> # v3.10+ Fixes aebea2ba ("net: mvneta: fix Tx interrupt delay") Acked-by:
Willy Tarreau <w@1wt.eu> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Takashi Iwai authored
[ Upstream commit f388cdcd ] snd_ctl_remove() has a notification for the removal event. It's superfluous when done during the device got disconnected. Although the notification itself is mostly harmless, it may potentially be harmful, and should be suppressed. Actually some components PCM may free ctl elements during the disconnect or free callbacks, thus it's no theoretical issue. This patch adds the check of card->shutdown flag for avoiding unnecessary notifications after (or during) the disconnect. Cc: <stable@vger.kernel.org> Signed-off-by:
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Hui Wang authored
[ Upstream commit 8a132099 ] We have some Dell laptops which can't detect headset mic, the machines use the codec ALC225, they have some new pin configuration values, after adding them in the alc225 pin quirk table, they work well. Cc: <stable@vger.kernel.org> Signed-off-by:
Hui Wang <hui.wang@canonical.com> Signed-off-by:
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Vivek Goyal authored
[ Upstream commit 07a2daab ] Right now when a new overlay inode is created, we initialize overlay inode's ->i_mode from underlying inode ->i_mode but we retain only file type bits (S_IFMT) and discard permission bits. This patch changes it and retains permission bits too. This should allow overlay to do permission checks on overlay inode itself in task context. [SzM] It also fixes clearing suid/sgid bits on write. Signed-off-by:
Vivek Goyal <vgoyal@redhat.com> Reported-by:
Eryu Guan <eguan@redhat.com> Signed-off-by:
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Miklos Szeredi authored
[ Upstream commit b99c2d91 ] Before 4bacc9c9 ("overlayfs: Make f_path...") file->f_path pointed to the underlying file, hence suid/sgid removal on write worked fine. After that patch file->f_path pointed to the overlay file, and the file mode bits weren't copied to overlay_inode->i_mode. So the suid/sgid removal simply stopped working. The fix is to copy the mode bits, but then ovl_setattr() needs to clear ATTR_MODE to avoid the BUG() in notify_change(). So do this first, then in the next patch copy the mode. Reported-by:
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Sinclair Yeh authored
[ Upstream commit 94477bff ] There are cases where it is desired to see if a proposed placement is compatible with a buffer object before calling ttm_bo_validate(). Signed-off-by:
Sinclair Yeh <syeh@vmware.com> Reviewed-by:
Thomas Hellstrom <thellstrom@vmware.com> Cc: <stable@vger.kernel.org> --- This is the first of a 3-patch series to fix a black screen issue observed on Ubuntu 16.04 server. Signed-off-by:
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Cameron Gutman authored
[ Upstream commit caca925f ] This prevents a malicious USB device from causing an oops. Signed-off-by:
Cameron Gutman <aicommander@gmail.com> Cc: stable@vger.kernel.org Signed-off-by:
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Thomas Petazzoni authored
[ Upstream commit c5379ba8 ] Until now, our understanding for HW I/O coherency to work on the Cortex-A9 based Marvell SoC was that only the PCIe regions should be mapped strongly-ordered. However, we were still encountering some deadlocks, especially when testing the CESA crypto engine. After checking with the HW designers, it was concluded that all the MMIO registers should be mapped as strongly ordered for the HW I/O coherency mechanism to work properly. This fixes some easy to reproduce deadlocks with the CESA crypto engine driver (dmcrypt on a sufficiently large disk partition). Tested-by:
Terry Stockert <stockert@inkblotadmirer.me> Tested-by:
Romain Perier <romain.perier@free-electrons.com> Cc: Terry Stockert <stockert@inkblotadmirer.me> Cc: Romain Perier <romain.perier@free-electrons.com> Cc: <stable@vger.kernel.org> Signed-off-by:
Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by:
Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by:
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- 03 Aug, 2016 1 commit
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Florian Westphal authored
[ Upstream commit f4dc7771 ] The dummy ruleset I used to test the original validation change was broken, most rules were unreachable and were not tested by mark_source_chains(). In some cases rulesets that used to load in a few seconds now require several minutes. sample ruleset that shows the behaviour: echo "*filter" for i in $(seq 0 100000);do printf ":chain_%06x - [0:0]\n" $i done for i in $(seq 0 100000);do printf -- "-A INPUT -j chain_%06x\n" $i printf -- "-A INPUT -j chain_%06x\n" $i printf -- "-A INPUT -j chain_%06x\n" $i done echo COMMIT [ pipe result into iptables-restore ] This ruleset will be about 74mbyte in size, with ~500k searches though all 500k[1] rule entries. iptables-restore will take forever (gave up after 10 minutes) Instead of always searching the entire blob for a match, fill an array with the start offsets of every single ipt_entry struct, then do a binary search to check if the jump target is present or not. After this change ruleset restore times get again close to what one gets when reverting 36472341 (~3 seconds on my workstation). [1] every user-defined rule gets an implicit RETURN, so we get 300k jumps + 100k userchains + 100k returns -> 500k rule entries Fixes: 36472341 ("netfilter: x_tables: validate targets of jumps") Reported-by:
Jeff Wu <wujiafu@gmail.com> Tested-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by:
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- 01 Aug, 2016 2 commits
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Sasha Levin authored
This reverts commit 0396a871. Signed-off-by:
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Sasha Levin authored
This reverts commit 1dd09642. Signed-off-by:
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- 30 Jul, 2016 1 commit
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Sasha Levin authored
Signed-off-by:
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- 20 Jul, 2016 7 commits
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Steven Rostedt authored
When I pulled in 4.1.28 into my stable 4.1-rt tree and ran the tests, it crashed with a severe OOM killing everything. I then tested 4.1.28 without -rt and it had the same issue. I did a bisect between 4.1.27 and 4.1.28 and found that the bug started at: commit 8f182270 "mm/swap.c: flush lru pvecs on compound page arrival" Looking at that patch and what's in mainline, I see that there's a mismatch in one of the hunks: Mainline: @@ -391,9 +391,8 @@ static void __lru_cache_add(struct page *page) struct pagevec *pvec = &get_cpu_var(lru_add_pvec); get_page(page); - if (!pagevec_space(pvec)) + if (!pagevec_add(pvec, page) || PageCompound(page)) __pagevec_lru_add(pvec); - pagevec_add(pvec, page); put_cpu_var(lru_add_pvec); } Stable 4.1.28: @@ -631,9 +631,8 @@ static void __lru_cache_add(struct page *page) struct pagevec *pvec = &get_cpu_var(lru_add_pvec); page_cache_get(page); - if (!pagevec_space(pvec)) + if (!pagevec_space(pvec) || PageCompound(page)) __pagevec_lru_add(pvec); - pagevec_add(pvec, page); put_cpu_var(lru_add_pvec); } Where mainline replace pagevec_space() with pagevec_add, and stable did not. Fixing this makes the OOM go away. Note, 3.18 has the same bug. Signed-off-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
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Michael Ellerman authored
The backport of 4705e024 ("powerpc: Update TM user feature bits in scan_features()") (f49eb503), missed the fact that 4.1 doesn't include the commit that added PPC_FEATURE2_HTM_NOSC. The correct fix is simply to omit PPC_FEATURE2_HTM_NOSC. Fixes: f49eb503 ("powerpc: Update TM user feature bits in scan_features()") Reported-by:
Christian Zigotzky <chzigotzky@bayern-mail.de> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
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Jeff Mahoney authored
[ Upstream commit f0fe970d ] 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> Signed-off-by:
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Jan Beulich authored
[ Upstream commit 6f2d9d99 ] 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> Signed-off-by:
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Jan Beulich authored
[ Upstream commit 7469be95 ] 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:
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Jeff Mahoney authored
[ Upstream commit 78c4e172 ] This reverts commit 2f36db71. It fixed a local root exploit but also introduced a dependency on the lower file system implementing an mmap operation just to open a file, which is a bit of a heavy hammer. The right fix is to have mmap depend on the existence of the mmap handler instead. Signed-off-by:
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Jan Beulich authored
[ Upstream commit 0beef634 ] Inability to locate a user mode specified transaction ID should not lead to a kernel crash. For other than XS_TRANSACTION_START also don't issue anything to xenbus if the specified ID doesn't match that of any active transaction. Signed-off-by:
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