- 21 Oct, 2019 40 commits
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Chao Yu authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit 6565c182 upstream. Quoted from commit 3da40c7b ("ext4: only call ext4_truncate when size <= isize") " At LSF we decided that if we truncate up from isize we shouldn't trim fallocated blocks that were fallocated with KEEP_SIZE and are past the new i_size. This patch fixes ext4 to do this. " And generic/092 of fstest have covered this case for long time, however is_quota_modification() didn't adjust based on that rule, so that in below condition, we will lose to quota block change: - fallocate blocks beyond EOF - remount - truncate(file_path, file_size) Fix it. Link: https://lore.kernel.org/r/20190911093650.35329-1-yuchao0@huawei.com Fixes: 3da40c7b ("ext4: only call ext4_truncate when size <= isize") CC: stable@vger.kernel.org Signed-off-by:
Chao Yu <yuchao0@huawei.com> Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Connor Kuehl <connor.kuehl@canonical.com> Signed-off-by:
Kleber Sacilotto de Souza <kleber.souza@canonical.com>
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Theodore Ts'o authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit c1e8220b upstream. If a program attempts to punch a hole on an inline data file, we need to convert it to a normal file first. This was detected using ext4/032 using the adv configuration. Simple reproducer: mke2fs -Fq -t ext4 -O inline_data /dev/vdc mount /vdc echo "" > /vdc/testfile xfs_io -c 'truncate 33554432' /vdc/testfile xfs_io -c 'fpunch 0 1048576' /vdc/testfile umount /vdc e2fsck -fy /dev/vdc Cc: stable@vger.kernel.org Signed-off-by:
Theodore Ts'o <tytso@mit.edu> Signed-off-by:
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Tetsuo Handa authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit 8619e5bd upstream. syzbot found that a thread can stall for minutes inside read_mem() or write_mem() after that thread was killed by SIGKILL [1]. Reading from iomem areas of /dev/mem can be slow, depending on the hardware. While reading 2GB at one read() is legal, delaying termination of killed thread for minutes is bad. Thus, allow reading/writing /dev/mem and /dev/kmem to be preemptible and killable. [ 1335.912419][T20577] read_mem: sz=4096 count=2134565632 [ 1335.943194][T20577] read_mem: sz=4096 count=2134561536 [ 1335.978280][T20577] read_mem: sz=4096 count=2134557440 [ 1336.011147][T20577] read_mem: sz=4096 count=2134553344 [ 1336.041897][T20577] read_mem: sz=4096 count=2134549248 Theoretically, reading/writing /dev/mem and /dev/kmem can become "interruptible". But this patch chose "killable". Future patch will make them "interruptible" so that we can revert to "killable" if some program regressed. [1] https://syzkaller.appspot.com/bug?id=a0e3436829698d5824231251fad9d8e998f94f5eSigned-off-by:
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: stable <stable@vger.kernel.org> Reported-by:
syzbot <syzbot+8ab2d0f39fb79fe6ca40@syzkaller.appspotmail.com> Link: https://lore.kernel.org/r/1566825205-10703-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jpSigned-off-by:
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Denis Kenzior authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit c1d3ad84 upstream. Currently frame registrations are not purged, even when changing the interface type. This can lead to potentially weird situations where frames possibly not allowed on a given interface type remain registered due to the type switching happening after registration. The kernel currently relies on userspace apps to actually purge the registrations themselves, this is not something that the kernel should rely on. Add a call to cfg80211_mlme_purge_registrations() to forcefully remove any registrations left over prior to switching the iftype. Cc: stable@vger.kernel.org Signed-off-by:
Denis Kenzior <denkenz@gmail.com> Link: https://lore.kernel.org/r/20190828211110.15005-1-denkenz@gmail.comSigned-off-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
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Xiao Ni authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit 143f6e73 upstream. 7471fb77 ("md/raid6: Fix anomily when recovering a single device in RAID6.") avoids rereading P when it can be computed from other members. However, this misses the chance to re-write the right data to P. This patch sets R5_ReadError if the re-read fails. Also, when re-read is skipped, we also missed the chance to reset rdev->read_errors to 0. It can fail the disk when there are many read errors on P member disk (other disks don't have read error) V2: upper layer read request don't read parity/Q data. So there is no need to consider such situation. This is Reported-by: kbuild test robot <lkp@intel.com> Fixes: 7471fb77 ("md/raid6: Fix anomily when recovering a single device in RAID6.") Cc: <stable@vger.kernel.org> #4.4+ Signed-off-by:
Xiao Ni <xni@redhat.com> Signed-off-by:
Song Liu <songliubraving@fb.com> Signed-off-by:
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Thadeu Lima de Souza Cascardo authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit f18ddc13 upstream. ENOTSUPP is not supposed to be returned to userspace. This was found on an OpenPower machine, where the RTC does not support set_alarm. On that system, a clock_nanosleep(CLOCK_REALTIME_ALARM, ...) results in "524 Unknown error 524" Replace it with EOPNOTSUPP which results in the expected "95 Operation not supported" error. Fixes: 1c6b39ad (alarmtimers: Return -ENOTSUPP if no RTC device is present) Signed-off-by:
Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20190903171802.28314-1-cascardo@canonical.comSigned-off-by:
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Luis Araneda authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit b7005d4e upstream. This fixes a kernel panic on memcpy when FORTIFY_SOURCE is enabled. The initial smp implementation on commit aa7eb2bb ("arm: zynq: Add smp support") used memcpy, which worked fine until commit ee333554 ("ARM: 8749/1: Kconfig: Add ARCH_HAS_FORTIFY_SOURCE") enabled overflow checks at runtime, producing a read overflow panic. The computed size of memcpy args are: - p_size (dst): 4294967295 = (size_t) -1 - q_size (src): 1 - size (len): 8 Additionally, the memory is marked as __iomem, so one of the memcpy_* functions should be used for read/write. Fixes: aa7eb2bb ("arm: zynq: Add smp support") Signed-off-by:
Luis Araneda <luaraneda@gmail.com> Cc: stable@vger.kernel.org Signed-off-by:
Michal Simek <michal.simek@xilinx.com> Signed-off-by:
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Amadeusz Sławiński authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit 810f3b86 upstream. If ipc->ops.reply_msg_match is NULL, we may end up using uninitialized mask value. reported by smatch: sound/soc/intel/common/sst-ipc.c:266 sst_ipc_reply_find_msg() error: uninitialized symbol 'mask'. Signed-off-by:
Amadeusz Sławiński <amadeuszx.slawinski@intel.com> Link: https://lore.kernel.org/r/20190827141712.21015-3-amadeuszx.slawinski@linux.intel.comReviewed-by:
Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by:
Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org Signed-off-by:
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Hans de Goede authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit 7e0bb582 upstream. Like a bunch of other MSI laptops the MS-1039 uses a 0c45:627b SN9C201 + OV7660 webcam which is mounted upside down. Add it to the sn9c20x flip_dmi_table to deal with this. Cc: stable@vger.kernel.org Reported-by:
Rui Salvaterra <rsalvaterra@gmail.com> Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by:
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Sean Christopherson authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit 16cfacc8 upstream. Manually generate the PDPTR reserved bit mask when explicitly loading PDPTRs. The reserved bits that are being tracked by the MMU reflect the current paging mode, which is unlikely to be PAE paging in the vast majority of flows that use load_pdptrs(), e.g. CR0 and CR4 emulation, __set_sregs(), etc... This can cause KVM to incorrectly signal a bad PDPTR, or more likely, miss a reserved bit check and subsequently fail a VM-Enter due to a bad VMCS.GUEST_PDPTR. Add a one off helper to generate the reserved bits instead of sharing code across the MMU's calculations and the PDPTR emulation. The PDPTR reserved bits are basically set in stone, and pushing a helper into the MMU's calculation adds unnecessary complexity without improving readability. Oppurtunistically fix/update the comment for load_pdptrs(). Note, the buggy commit also introduced a deliberate functional change, "Also remove bit 5-6 from rsvd_bits_mask per latest SDM.", which was effectively (and correctly) reverted by commit cd9ae5fe ("KVM: x86: Fix page-tables reserved bits"). A bit of SDM archaeology shows that the SDM from late 2008 had a bug (likely a copy+paste error) where it listed bits 6:5 as AVL and A for PDPTEs used for 4k entries but reserved for 2mb entries. I.e. the SDM contradicted itself, and bits 6:5 are and always have been reserved. Fixes: 20c466b5 ("KVM: Use rsvd_bits_mask in load_pdptrs()") Cc: stable@vger.kernel.org Cc: Nadav Amit <nadav.amit@gmail.com> Reported-by:
Doug Reiland <doug.reiland@intel.com> Signed-off-by:
Sean Christopherson <sean.j.christopherson@intel.com> Reviewed-by:
Peter Xu <peterx@redhat.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
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Jan Dakinevich authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit c8848cee upstream. x86_emulate_instruction() takes into account ctxt->have_exception flag during instruction decoding, but in practice this flag is never set in x86_decode_insn(). Fixes: 6ea6e843 ("KVM: x86: inject exceptions produced by x86_decode_insn") Cc: stable@vger.kernel.org Cc: Denis Lunev <den@virtuozzo.com> Cc: Roman Kagan <rkagan@virtuozzo.com> Cc: Denis Plotnikov <dplotnikov@virtuozzo.com> Signed-off-by:
Jan Dakinevich <jan.dakinevich@virtuozzo.com> Signed-off-by:
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Jan Dakinevich authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit 8530a79c upstream. inject_emulated_exception() returns true if and only if nested page fault happens. However, page fault can come from guest page tables walk, either nested or not nested. In both cases we should stop an attempt to read under RIP and give guest to step over its own page fault handler. This is also visible when an emulated instruction causes a #GP fault and the VMware backdoor is enabled. To handle the VMware backdoor, KVM intercepts #GP faults; with only the next patch applied, x86_emulate_instruction() injects a #GP but returns EMULATE_FAIL instead of EMULATE_DONE. EMULATE_FAIL causes handle_exception_nmi() (or gp_interception() for SVM) to re-inject the original #GP because it thinks emulation failed due to a non-VMware opcode. This patch prevents the issue as x86_emulate_instruction() will return EMULATE_DONE after injecting the #GP. Fixes: 6ea6e843 ("KVM: x86: inject exceptions produced by x86_decode_insn") Cc: stable@vger.kernel.org Cc: Denis Lunev <den@virtuozzo.com> Cc: Roman Kagan <rkagan@virtuozzo.com> Cc: Denis Plotnikov <dplotnikov@virtuozzo.com> Signed-off-by:
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Helge Deller authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit 5fa16591 upstream. The HP Dino PCI controller chip can be used in two variants: as on-board controller (e.g. in B160L), or on an Add-On card ("Card-Mode") to bridge PCI components to systems without a PCI bus, e.g. to a HSC/GSC bus. One such Add-On card is the HP HSC-PCI Card which has one or more DEC Tulip PCI NIC chips connected to the on-card Dino PCI controller. Dino in Card-Mode has a big disadvantage: All PCI memory accesses need to go through the DINO_MEM_DATA register, so Linux drivers will not be able to use the ioremap() function. Without ioremap() many drivers will not work, one example is the tulip driver which then simply crashes the kernel if it tries to access the ports on the HP HSC card. This patch disables the HP HSC card if it finds one, and as such fixes the kernel crash on a HP D350/2 machine. Signed-off-by:
Helge Deller <deller@gmx.de> Noticed-by:
Phil Scarr <phil.scarr@pm.me> Cc: stable@vger.kernel.org Signed-off-by:
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Vasily Averin authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit d5880c7a upstream. unlock_page() was missing in case of an already in-flight write against the same page. Signed-off-by:
Vasily Averin <vvs@virtuozzo.com> Fixes: ff17be08 ("fuse: writepage: skip already in flight") Cc: <stable@vger.kernel.org> # v3.13 Signed-off-by:
Miklos Szeredi <mszeredi@redhat.com> Signed-off-by:
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Vincent Whitchurch authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit b46eff55ad5bd98e746c0a7022fe7ee071de5fee ] kmsg_dump_get_buffer() is supposed to select all the youngest log messages which fit into the provided buffer. It determines the correct start index by using msg_print_text() with a NULL buffer to calculate the size of each entry. However, when performing the actual writes, msg_print_text() only writes the entry to the buffer if the written len is lesser than the size of the buffer. So if the lengths of the selected youngest log messages happen to precisely fill up the provided buffer, the last log message is not included. We don't want to modify msg_print_text() to fill up the buffer and start returning a length which is equal to the size of the buffer, since callers of its other users, such as kmsg_dump_get_line(), depend upon the current behaviour. Instead, fix kmsg_dump_get_buffer() to compensate for this. For example, with the following two final prints: [ 6.427502] AAAAAAAAAAAAA [ 6.427769] BBBBBBBB12345 A dump of a 64-byte buffer filled by kmsg_dump_get_buffer(), before this patch: 00000000: 3c 30 3e 5b 20 20 20 20 36 2e 35 32 32 31 39 37 <0>[ 6.522197 00000010: 5d 20 41 41 41 41 41 41 41 41 41 41 41 41 41 0a ] AAAAAAAAAAAAA. 00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ After this patch: 00000000: 3c 30 3e 5b 20 20 20 20 36 2e 34 35 36 36 37 38 <0>[ 6.456678 00000010: 5d 20 42 42 42 42 42 42 42 42 31 32 33 34 35 0a ] BBBBBBBB12345. 00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ Link: http://lkml.kernel.org/r/20190711142937.4083-1-vincent.whitchurch@axis.com Fixes: e2ae715d ("kmsg - kmsg_dump() use iterator to receive log buffer content") To: rostedt@goodmis.org Cc: linux-kernel@vger.kernel.org Cc: <stable@vger.kernel.org> # v3.5+ Signed-off-by:
Vincent Whitchurch <vincent.whitchurch@axis.com> Reviewed-by:
Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by:
Petr Mladek <pmladek@suse.com> Signed-off-by:
Sasha Levin <sashal@kernel.org> Signed-off-by:
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Takashi Sakamoto authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit e1a00b5b upstream. 2 bytes in MSB of register for clock status is zero during intermediate state after changing status of sampling clock in models of TASCAM FireWire series. The duration of this state differs depending on cases. During the state, it's better to retry reading the register for current status of the clock. In current implementation, the intermediate state is checked only when getting current sampling transmission frequency, then retry reading. This care is required for the other operations to read the register. This commit moves the codes of check and retry into helper function commonly used for operations to read the register. Fixes: e453df44 ("ALSA: firewire-tascam: add PCM functionality") Cc: <stable@vger.kernel.org> # v4.4+ Signed-off-by:
Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20190910135152.29800-3-o-takashi@sakamocchi.jpSigned-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Takashi Sakamoto authored
BugLink: https://bugs.launchpad.net/bugs/1848589 commit 2617120f upstream. The return value of snd_tscm_stream_get_clock() is ignored. This commit checks the value and handle error. Fixes: e453df44 ("ALSA: firewire-tascam: add PCM functionality") Cc: <stable@vger.kernel.org> # v4.4+ Signed-off-by:
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Sakari Ailus authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit e9eb103f ] The omap3isp driver registered subdevs without the dev field being set. Do that now. Signed-off-by:
Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
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Qu Wenruo authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 2a28468e ] [BUG] With fuzzed image and MIXED_GROUPS super flag, we can hit the following BUG_ON(): kernel BUG at fs/btrfs/delayed-ref.c:491! invalid opcode: 0000 [#1] PREEMPT SMP NOPTI CPU: 0 PID: 1849 Comm: sync Tainted: G O 5.2.0-custom #27 RIP: 0010:update_existing_head_ref.cold+0x44/0x46 [btrfs] Call Trace: add_delayed_ref_head+0x20c/0x2d0 [btrfs] btrfs_add_delayed_tree_ref+0x1fc/0x490 [btrfs] btrfs_free_tree_block+0x123/0x380 [btrfs] __btrfs_cow_block+0x435/0x500 [btrfs] btrfs_cow_block+0x110/0x240 [btrfs] btrfs_search_slot+0x230/0xa00 [btrfs] ? __lock_acquire+0x105e/0x1e20 btrfs_insert_empty_items+0x67/0xc0 [btrfs] alloc_reserved_file_extent+0x9e/0x340 [btrfs] __btrfs_run_delayed_refs+0x78e/0x1240 [btrfs] ? kvm_clock_read+0x18/0x30 ? __sched_clock_gtod_offset+0x21/0x50 btrfs_run_delayed_refs.part.0+0x4e/0x180 [btrfs] btrfs_run_delayed_refs+0x23/0x30 [btrfs] btrfs_commit_transaction+0x53/0x9f0 [btrfs] btrfs_sync_fs+0x7c/0x1c0 [btrfs] ? __ia32_sys_fdatasync+0x20/0x20 sync_fs_one_sb+0x23/0x30 iterate_supers+0x95/0x100 ksys_sync+0x62/0xb0 __ia32_sys_sync+0xe/0x20 do_syscall_64+0x65/0x240 entry_SYSCALL_64_after_hwframe+0x49/0xbe [CAUSE] This situation is caused by several factors: - Fuzzed image The extent tree of this fs missed one backref for extent tree root. So we can allocated space from that slot. - MIXED_BG feature Super block has MIXED_BG flag. - No mixed block groups exists All block groups are just regular ones. This makes data space_info->block_groups[] contains metadata block groups. And when we reserve space for data, we can use space in metadata block group. Then we hit the following file operations: - fallocate We need to allocate data extents. find_free_extent() choose to use the metadata block to allocate space from, and choose the space of extent tree root, since its backref is missing. This generate one delayed ref head with is_data = 1. - extent tree update We need to update extent tree at run_delayed_ref time. This generate one delayed ref head with is_data = 0, for the same bytenr of old extent tree root. Then we trigger the BUG_ON(). [FIX] The quick fix here is to check block_group->flags before using it. The problem can only happen for MIXED_GROUPS fs. Regular filesystems won't have space_info with DATA|METADATA flag, and no way to hit the bug. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=203255Reported-by:
Jungyeon Yoon <jungyeon.yoon@gmail.com> Signed-off-by:
Qu Wenruo <wqu@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com> Signed-off-by:
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Takashi Iwai authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 051c78af ] Lenovo ThinkCentre M73 and M93 don't seem to have a proper beep although the driver tries to probe and set up blindly. Blacklist these machines for suppressing the beep creation. BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=204635Signed-off-by:
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Tomas Bortoli authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit a10feaf8 ] The function at issue does not always initialize each byte allocated for 'b' and can therefore leak uninitialized memory to a USB device in the call to usb_bulk_msg() Use kzalloc() instead of kmalloc() Signed-off-by:
Tomas Bortoli <tomasbortoli@gmail.com> Reported-by: syzbot+0522702e9d67142379f1@syzkaller.appspotmail.com Signed-off-by:
Sean Young <sean@mess.org> Signed-off-by:
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Kevin Easton authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 764f3f1e ] This sentinel tells the firmware loading process when to stop. Reported-and-tested-by: syzbot+98156c174c5a2cad9f8f@syzkaller.appspotmail.com Signed-off-by:
Kevin Easton <kevin@guarana.org> Signed-off-by:
Kalle Valo <kvalo@codeaurora.org> Signed-off-by:
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Al Cooper authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit c894e33d ] When switching from any MMC speed mode that requires 1.8v (HS200, HS400 and HS400ES) to High Speed (HS) mode, the system ends up configured for SDR12 with a 50MHz clock which is an illegal mode. This happens because the SDHCI_CTRL_VDD_180 bit in the SDHCI_HOST_CONTROL2 register is left set and when this bit is set, the speed mode is controlled by the SDHCI_CTRL_UHS field in the SDHCI_HOST_CONTROL2 register. The SDHCI_CTRL_UHS field will end up being set to 0 (SDR12) by sdhci_set_uhs_signaling() because there is no UHS mode being set. The fix is to change sdhci_set_uhs_signaling() to set the SDHCI_CTRL_UHS field to SDR25 (which is the same as HS) for any switch to HS mode. This was found on a new eMMC controller that does strict checking of the speed mode and the corresponding clock rate. It caused the switch to HS400 mode to fail because part of the sequence to switch to HS400 requires a switch from HS200 to HS before going to HS400. Suggested-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
Al Cooper <alcooperx@gmail.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by:
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Peter Ujfalusi authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 2ec42f31 ] Some tools use the snd_pcm_info_get_name() to try to identify PCMs or for other purposes. Currently it is left empty with the dmaengine-pcm, in this case copy the pcm->id string as pcm->name. For example IGT is using this to find the HDMI PCM for testing audio on it. Signed-off-by:
Peter Ujfalusi <peter.ujfalusi@ti.com> Reported-by:
Arthur She <arthur.she@linaro.org> Link: https://lore.kernel.org/r/20190906055524.7393-1-peter.ujfalusi@ti.comSigned-off-by:
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Masami Hiramatsu authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit e336b402 ] Since BUG() and WARN() may use a trap (e.g. UD2 on x86) to get the address where the BUG() has occurred, kprobes can not do single-step out-of-line that instruction. So prohibit probing on such address. Without this fix, if someone put a kprobe on WARN(), the kernel will crash with invalid opcode error instead of outputing warning message, because kernel can not find correct bug address. Signed-off-by:
Masami Hiramatsu <mhiramat@kernel.org> Acked-by:
Steven Rostedt (VMware) <rostedt@goodmis.org> Acked-by:
Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David S . Miller <davem@davemloft.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Naveen N . Rao <naveen.n.rao@linux.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/156750890133.19112.3393666300746167111.stgit@devnote2Signed-off-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
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Peter Ujfalusi authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit c5dbe606 ] Skip resetting paRAM slots marked as reserved as they might be used by other cores. Signed-off-by:
Vinod Koul <vkoul@kernel.org> Signed-off-by:
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Yufen Yu authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 07f1a685 ] When run test case: mdadm -CR /dev/md1 -l 1 -n 4 /dev/sd[a-d] --assume-clean --bitmap=internal mdadm -S /dev/md1 mdadm -A /dev/md1 /dev/sd[b-c] --run --force mdadm --zero /dev/sda mdadm /dev/md1 -a /dev/sda echo offline > /sys/block/sdc/device/state echo offline > /sys/block/sdb/device/state sleep 5 mdadm -S /dev/md1 echo running > /sys/block/sdb/device/state echo running > /sys/block/sdc/device/state mdadm -A /dev/md1 /dev/sd[a-c] --run --force mdadm run fail with kernel message as follow: [ 172.986064] md: kicking non-fresh sdb from array! [ 173.004210] md: kicking non-fresh sdc from array! [ 173.022383] md/raid1:md1: active with 0 out of 4 mirrors [ 173.022406] md1: failed to create bitmap (-5) In fact, when active disk in raid1 array less than one, we need to return fail in raid1_run(). Reviewed-by:
NeilBrown <neilb@suse.de> Signed-off-by:
Yufen Yu <yuyufen@huawei.com> Signed-off-by:
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Wang Shenran authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 6e4d91aa ] At boot time, the acpi_power_meter driver logs the following error level message: "Ignoring unsafe software power cap". Having read about it from a few sources, it seems that the error message can be quite misleading. While the message can imply that Linux is ignoring the fact that the system is operating in potentially dangerous conditions, the truth is the driver found an ACPI_PMC object that supports software power capping. The driver simply decides not to use it, perhaps because it doesn't support the object. The best solution is probably changing the log level from error to warning. All sources I have found, regarding the error, have downplayed its significance. There is not much of a reason for it to be on error level, while causing potential confusions or misinterpretations. Signed-off-by:
Wang Shenran <shenran268@gmail.com> Link: https://lore.kernel.org/r/20190724080110.6952-1-shenran268@gmail.comSigned-off-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
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Wenwen Wang authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 03d1571d ] In cm_write(), 'buf' is allocated through kzalloc(). In the following execution, if an error occurs, 'buf' is not deallocated, leading to memory leaks. To fix this issue, free 'buf' before returning the error. Fixes: 526b4af4 ("ACPI: Split out custom_method functionality into an own driver") Signed-off-by:
Wenwen Wang <wenwen@cs.uga.edu> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
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Tzvetomir Stoyanov authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit e97fd138 ] To be compliant with XDG user directory layout, the user's plugin directory is changed from ~/.traceevent/plugins to ~/.local/lib/traceevent/plugins/ Suggested-by:
Patrick McLean <chutzpah@gentoo.org> Signed-off-by:
Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Patrick McLean <chutzpah@gentoo.org> Cc: linux-trace-devel@vger.kernel.org Link: https://lore.kernel.org/linux-trace-devel/20190313144206.41e75cf8@patrickm/ Link: http://lore.kernel.org/linux-trace-devel/20190801074959.22023-4-tz.stoyanov@gmail.com Link: http://lore.kernel.org/lkml/20190805204355.344622683@goodmis.orgSigned-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
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Al Stone authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 4c4cdc4c ] According to the ACPI 6.3 specification, the _PSD method is optional when using CPPC. The underlying assumption is that each CPU can change frequency independently from all other CPUs; _PSD is provided to tell the OS that some processors can NOT do that. However, the acpi_get_psd() function returns ENODEV if there is no _PSD method present, or an ACPI error status if an error occurs when evaluating _PSD, if present. This makes _PSD mandatory when using CPPC, in violation of the specification, and only on Linux. This has forced some firmware writers to provide a dummy _PSD, even though it is irrelevant, but only because Linux requires it; other OSPMs follow the spec. We really do not want to have OS specific ACPI tables, though. So, correct acpi_get_psd() so that it does not return an error if there is no _PSD method present, but does return a failure when the method can not be executed properly. This allows _PSD to be optional as it should be. Signed-off-by:
Al Stone <ahs3@redhat.com> Signed-off-by:
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Mauro Carvalho Chehab authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 093347ab ] As pointed by cppcheck: [drivers/media/i2c/ov9650.c:706]: (error) Shifting by a negative value is undefined behaviour [drivers/media/i2c/ov9650.c:707]: (error) Shifting by a negative value is undefined behaviour [drivers/media/i2c/ov9650.c:721]: (error) Shifting by a negative value is undefined behaviour Prevent mangling with gains with invalid values. As pointed by Sylvester, this should never happen in practice, as min value of V4L2_CID_GAIN control is 16 (gain is always >= 16 and m is always >= 0), but it is too hard for a static analyzer to get this, as the logic with validates control min/max is elsewhere inside V4L2 core. Reviewed-by:
Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by:
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Maciej S. Szmigiero authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 9d802222 ] saa7134_i2c_eeprom_md7134_gate() function and the associated comment uses an inverted i2c gate open / closed terminology. Let's fix this. Signed-off-by:
Maciej S. Szmigiero <mail@maciej.szmigiero.name> Signed-off-by:
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Wenwen Wang authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 1c770f0f ] In submit_urbs(), 'cam->sbuf[i].data' is allocated through kmalloc_array(). However, it is not deallocated if the following allocation for urbs fails. To fix this issue, free 'cam->sbuf[i].data' if usb_alloc_urb() fails. Signed-off-by:
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Wenwen Wang authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 42e64117 ] If saa7146_register_device() fails, no cleanup is executed, leading to memory/resource leaks. To fix this issue, perform necessary cleanup work before returning the error. Signed-off-by:
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Hans Verkuil authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 8b8900b7 ] dev->usbc_buf was passed as argument for %s, but it was not safeguarded by a terminating 0. This caused this syzbot issue: https://syzkaller.appspot.com/bug?extid=79d18aac4bf1770dd050 Reported-and-tested-by: syzbot+79d18aac4bf1770dd050@syzkaller.appspotmail.com Signed-off-by:
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Hans Verkuil authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 0d616f2a ] In the probe() function radio->int_in_urb was not killed if an error occurred in the probe sequence. It was also missing in the disconnect. This caused this syzbot issue: https://syzkaller.appspot.com/bug?extid=2d4fc2a0c45ad8da7e99 Reported-and-tested-by: syzbot+2d4fc2a0c45ad8da7e99@syzkaller.appspotmail.com Signed-off-by:
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Arnd Bergmann authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit de6f97b2 ] compile-testing this driver on other architectures showed multiple warnings: drivers/net/ethernet/nxp/lpc_eth.c: In function 'lpc_eth_drv_probe': drivers/net/ethernet/nxp/lpc_eth.c:1337:19: warning: format '%d' expects argument of type 'int', but argument 4 has type 'resource_size_t {aka long long unsigned int}' [-Wformat=] drivers/net/ethernet/nxp/lpc_eth.c:1342:19: warning: format '%x' expects argument of type 'unsigned int', but argument 4 has type 'dma_addr_t {aka long long unsigned int}' [-Wformat=] Use format strings that work on all architectures. Link: https://lore.kernel.org/r/20190809144043.476786-10-arnd@arndb.deReported-by:
kbuild test robot <lkp@intel.com> Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Sakari Ailus authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 7ef57be0 ] The streaming state should be set to the first upstream sub-device only, not everywhere, for a sub-device driver itself knows how to best control the streaming state of its own upstream sub-devices. Signed-off-by:
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Arnd Bergmann authored
BugLink: https://bugs.launchpad.net/bugs/1848589 [ Upstream commit 00c97555 ] When compile-testing on other architectures, we get lots of warnings about incorrect format strings, like: drivers/dma/iop-adma.c: In function 'iop_adma_alloc_slots': drivers/dma/iop-adma.c:307:6: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t {aka long long unsigned int}' [-Wformat=] drivers/dma/iop-adma.c: In function 'iop_adma_prep_dma_memcpy': >> drivers/dma/iop-adma.c:518:40: warning: format '%u' expects argument of type 'unsigned int', but argument 5 has type 'size_t {aka long unsigned int}' [-Wformat=] Use %zu for printing size_t as required, and cast the dma_addr_t arguments to 'u64' for printing with %llx. Ideally this should use the %pad format string, but that requires an lvalue argument that doesn't work here. Link: https://lore.kernel.org/r/20190809163334.489360-3-arnd@arndb.deSigned-off-by:
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