- 10 Jul, 2019 40 commits
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Lucas Stach authored
commit be132e13 upstream. When something goes wrong in the GPU init after the cmdbuf suballocator has been constructed, we fail to destroy it properly. This causes havok later when the GPU is unbound due to a module unload or similar. Fixes: e66774dd (drm/etnaviv: add cmdbuf suballocator) Signed-off-by:
Lucas Stach <l.stach@pengutronix.de> Tested-by:
Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Gerd Hoffmann authored
commit 41de4be6 upstream. drm_connector_update_edid_property can sleep, we must not call it while holding a spinlock. Move the callsite. Fixes: b4b01b49 ("drm/virtio: add edid support") Reported-by:
Max Filippov <jcmvbkbc@gmail.com> Signed-off-by:
Gerd Hoffmann <kraxel@redhat.com> Tested-by:
Cornelia Huck <cohuck@redhat.com> Acked-by:
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Alex Deucher authored
commit 25f09f85 upstream. Recommended by the hw team. Reviewed-and-Tested-by:
Huang Rui <ray.huang@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Signed-off-by:
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Lyude Paul authored
commit 688f3d1e upstream. I'm not entirely sure why this is, but for some reason: 921935dc ("drm/amd/powerplay: enforce display related settings only on needed") Breaks runtime PM resume on the Radeon PRO WX 3100 (Lexa) in one the pre-production laptops I have. The issue manifests as the following messages in dmesg: [drm] UVD and UVD ENC initialized successfully. amdgpu 0000:3b:00.0: [drm:amdgpu_ring_test_helper [amdgpu]] *ERROR* ring vce1 test failed (-110) [drm:amdgpu_device_ip_resume_phase2 [amdgpu]] *ERROR* resume of IP block <vce_v3_0> failed -110 [drm:amdgpu_device_resume [amdgpu]] *ERROR* amdgpu_device_ip_resume failed (-110). And happens after about 6-10 runtime PM suspend/resume cycles (sometimes sooner, if you're lucky!). Unfortunately I can't seem to pin down precisely which part in psm_adjust_power_state_dynamic that is causing the issue, but not skipping the display setting setup seems to fix it. Hopefully if there is a better fix for this, this patch will spark discussion around it. Fixes: 921935dc ("drm/amd/powerplay: enforce display related settings only on needed") Cc: Evan Quan <evan.quan@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Huang Rui <ray.huang@amd.com> Cc: Rex Zhu <Rex.Zhu@amd.com> Cc: Likun Gao <Likun.Gao@amd.com> Cc: <stable@vger.kernel.org> # v5.1+ Signed-off-by:
Lyude Paul <lyude@redhat.com> Signed-off-by:
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Evan Quan authored
commit f78c581e upstream. Otherwise, you may get divided-by-zero error or corrput the SMU fan control feature. Signed-off-by:
Evan Quan <evan.quan@amd.com> Reviewed-by:
Slava Abramov <slava.abramov@amd.com> Acked-by:
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Chris Wilson authored
commit c84c9029 upstream. Despite what I think the prm recommends, commit f2253bd9 ("drm/i915/ringbuffer: EMIT_INVALIDATE after switch context") turned out to be a huge mistake when enabling Ironlake contexts as the GPU would hang on either a MI_FLUSH or PIPE_CONTROL immediately following the MI_SET_CONTEXT of an active mesa context (more vanilla contexts, e.g. simple rendercopies with igt, do not suffer). Ville found the following clue, "[DevCTG+]: For the invalidate operation of the pipe control, the following pointers are affected. The invalidate operation affects the restore of these packets. If the pipe control invalidate operation is completed before the context save, the indirect pointers will not be restored from memory. 1. Pipeline State Pointer 2. Media State Pointer 3. Constant Buffer Packet" which suggests by us emitting the INVALIDATE prior to the MI_SET_CONTEXT, we prevent the context-restore from chasing the dangling pointers within the image, and explains why this likely prevents the GPU hang. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190419111749.3910-1-chris@chris-wilson.co.uk (cherry picked from commit 928f8f42 in drm-intel-next) Cc: stable@vger.kernel.org Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111014 Fixes: f2253bd9 ("drm/i915/ringbuffer: EMIT_INVALIDATE after switch context") Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
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Ard Biesheuvel authored
commit 6f496a55 upstream. When KASLR and KASAN are both enabled, we keep the modules where they are, and randomize the placement of the kernel so it is within 2 GB of the module region. The reason for this is that putting modules in the vmalloc region (like we normally do when KASLR is enabled) is not possible in this case, given that the entire vmalloc region is already backed by KASAN zero shadow pages, and so allocating dedicated KASAN shadow space as required by loaded modules is not possible. The default module allocation window is set to [_etext - 128MB, _etext] in kaslr.c, which is appropriate for KASLR kernels booted without a seed or with 'nokaslr' on the command line. However, as it turns out, it is not quite correct for the KASAN case, since it still intersects the vmalloc region at the top, where attempts to allocate shadow pages will collide with the KASAN zero shadow pages, causing a WARN() and all kinds of other trouble. So cap the top end to MODULES_END explicitly when running with KASAN. Cc: <stable@vger.kernel.org> # 4.9+ Acked-by:
Catalin Marinas <catalin.marinas@arm.com> Tested-by:
Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by:
Will Deacon <will@kernel.org> Signed-off-by:
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Joshua Scott authored
commit 80031361 upstream. Switch to the "marvell,armada-38x-uart" driver variant to empty the UART buffer before writing to the UART_LCR register. Signed-off-by:
Joshua Scott <joshua.scott@alliedtelesis.co.nz> Tested-by:
Andrew Lunn <andrew@lunn.ch> Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>. Cc: stable@vger.kernel.org Fixes: 43e28ba8 ("ARM: dts: Use armada-370-xp as a base for armada-xp-98dx3236") Signed-off-by:
Gregory CLEMENT <gregory.clement@bootlin.com> Signed-off-by:
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Eiichi Tsukata authored
commit 46cc0b44 upstream. Current snapshot implementation swaps two ring_buffers even though their sizes are different from each other, that can cause an inconsistency between the contents of buffer_size_kb file and the current buffer size. For example: # cat buffer_size_kb 7 (expanded: 1408) # echo 1 > events/enable # grep bytes per_cpu/cpu0/stats bytes: 1441020 # echo 1 > snapshot // current:1408, spare:1408 # echo 123 > buffer_size_kb // current:123, spare:1408 # echo 1 > snapshot // current:1408, spare:123 # grep bytes per_cpu/cpu0/stats bytes: 1443700 # cat buffer_size_kb 123 // != current:1408 And also, a similar per-cpu case hits the following WARNING: Reproducer: # echo 1 > per_cpu/cpu0/snapshot # echo 123 > buffer_size_kb # echo 1 > per_cpu/cpu0/snapshot WARNING: WARNING: CPU: 0 PID: 1946 at kernel/trace/trace.c:1607 update_max_tr_single.part.0+0x2b8/0x380 Modules linked in: CPU: 0 PID: 1946 Comm: bash Not tainted 5.2.0-rc6 #20 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-2.fc30 04/01/2014 RIP: 0010:update_max_tr_single.part.0+0x2b8/0x380 Code: ff e8 dc da f9 ff 0f 0b e9 88 fe ff ff e8 d0 da f9 ff 44 89 ee bf f5 ff ff ff e8 33 dc f9 ff 41 83 fd f5 74 96 e8 b8 da f9 ff <0f> 0b eb 8d e8 af da f9 ff 0f 0b e9 bf fd ff ff e8 a3 da f9 ff 48 RSP: 0018:ffff888063e4fca0 EFLAGS: 00010093 RAX: ffff888066214380 RBX: ffffffff99850fe0 RCX: ffffffff964298a8 RDX: 0000000000000000 RSI: 00000000fffffff5 RDI: 0000000000000005 RBP: 1ffff1100c7c9f96 R08: ffff888066214380 R09: ffffed100c7c9f9b R10: ffffed100c7c9f9a R11: 0000000000000003 R12: 0000000000000000 R13: 00000000ffffffea R14: ffff888066214380 R15: ffffffff99851060 FS: 00007f9f8173c700(0000) GS:ffff88806d000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000714dc0 CR3: 0000000066fa6000 CR4: 00000000000006f0 Call Trace: ? trace_array_printk_buf+0x140/0x140 ? __mutex_lock_slowpath+0x10/0x10 tracing_snapshot_write+0x4c8/0x7f0 ? trace_printk_init_buffers+0x60/0x60 ? selinux_file_permission+0x3b/0x540 ? tracer_preempt_off+0x38/0x506 ? trace_printk_init_buffers+0x60/0x60 __vfs_write+0x81/0x100 vfs_write+0x1e1/0x560 ksys_write+0x126/0x250 ? __ia32_sys_read+0xb0/0xb0 ? do_syscall_64+0x1f/0x390 do_syscall_64+0xc1/0x390 entry_SYSCALL_64_after_hwframe+0x49/0xbe This patch adds resize_buffer_duplicate_size() to check if there is a difference between current/spare buffer sizes and resize a spare buffer if necessary. Link: http://lkml.kernel.org/r/20190625012910.13109-1-devel@etsukata.com Cc: stable@vger.kernel.org Fixes: ad909e21 ("tracing: Add internal tracing_snapshot() functions") Signed-off-by:
Eiichi Tsukata <devel@etsukata.com> Signed-off-by:
Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by:
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Oleg Nesterov authored
commit 87518530 upstream. swap_readpage() sets waiter = bio->bi_private even if synchronous = F, this means that the caller can get the spurious wakeup after return. This can be fatal if blk_wake_io_task() does set_current_state(TASK_RUNNING) after the caller does set_special_state(), in the worst case the kernel can crash in do_task_dead(). Link: http://lkml.kernel.org/r/20190704160301.GA5956@redhat.com Fixes: 0619317f ("block: add polled wakeup task helper") Signed-off-by:
Oleg Nesterov <oleg@redhat.com> Reported-by:
Qian Cai <cai@lca.pw> Acked-by:
Hugh Dickins <hughd@google.com> Reviewed-by:
Jens Axboe <axboe@kernel.dk> 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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Eric Biggers authored
commit cbcfa130 upstream. When IOCB_CMD_POLL is used on a userfaultfd, aio_poll() disables IRQs and takes kioctx::ctx_lock, then userfaultfd_ctx::fd_wqh.lock. This may have to wait for userfaultfd_ctx::fd_wqh.lock to be released by userfaultfd_ctx_read(), which in turn can be waiting for userfaultfd_ctx::fault_pending_wqh.lock or userfaultfd_ctx::event_wqh.lock. But elsewhere the fault_pending_wqh and event_wqh locks are taken with IRQs enabled. Since the IRQ handler may take kioctx::ctx_lock, lockdep reports that a deadlock is possible. Fix it by always disabling IRQs when taking the fault_pending_wqh and event_wqh locks. Commit ae62c16e ("userfaultfd: disable irqs when taking the waitqueue lock") didn't fix this because it only accounted for the fd_wqh lock, not the other locks nested inside it. Link: http://lkml.kernel.org/r/20190627075004.21259-1-ebiggers@kernel.org Fixes: bfe4037e ("aio: implement IOCB_CMD_POLL") Signed-off-by:
Eric Biggers <ebiggers@google.com> Reported-by: syzbot+fab6de82892b6b9c6191@syzkaller.appspotmail.com Reported-by: syzbot+53c0b767f7ca0dc0c451@syzkaller.appspotmail.com Reported-by: syzbot+a3accb352f9c22041cfa@syzkaller.appspotmail.com Reviewed-by:
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Herbert Xu authored
commit c8ea9fce upstream. Sometimes mpi_powm will leak karactx because a memory allocation failure causes a bail-out that skips the freeing of karactx. This patch moves the freeing of karactx to the end of the function like everything else so that it can't be skipped. Reported-by: syzbot+f7baccc38dcc1e094e77@syzkaller.appspotmail.com Fixes: cdec9cb5 ("crypto: GnuPG based MPI lib - source files...") Cc: <stable@vger.kernel.org> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Reviewed-by:
Eric Biggers <ebiggers@kernel.org> Signed-off-by:
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Jan Kara authored
commit 1571c029 upstream. When inserting entry into xarray, we store mapping and index in corresponding struct pages for memory error handling. When it happened that one process was mapping file at PMD granularity while another process at PTE granularity, we could wrongly deassociate PMD range and then reassociate PTE range leaving the rest of struct pages in PMD range without mapping information which could later cause missed notifications about memory errors. Fix the problem by calling the association / deassociation code if and only if we are really going to update the xarray (deassociating and associating zero or empty entries is just no-op so there's no reason to complicate the code with trying to avoid the calls for these cases). Cc: <stable@vger.kernel.org> Fixes: d2c997c0 ("fs, dax: use page->mapping to warn if truncate...") Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
Dan Williams <dan.j.williams@intel.com> Signed-off-by:
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Dennis Wassenberg authored
commit bef33e19 upstream. On M710q Lenovo ThinkCentre machine, there are two front mics, we change the location for one of them to avoid conflicts. Signed-off-by:
Dennis Wassenberg <dennis.wassenberg@secunet.com> Cc: <stable@vger.kernel.org> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Richard Sailer authored
commit 503d90b3 upstream. This adds 4 SND_PCI_QUIRK(...) lines for several barebone models of the ODM Clevo. The model names are written in regex syntax to describe/match all clevo models that are similar enough and use the same PCI SSID that this fixup works for them. Additionally the lines regarding SSID 0x96e1 and 0x97e1 didn't fix audio for the all our Clevo notebooks using these SSIDs (models Clevo P960* and P970*) since ALC1220_FIXP_CLEVO_PB51ED_PINS swapped pins that are not necesarry to be swapped. This patch initiates ALC1220_FIXUP_CLEVO_P950 instead for these model and fixes the audio. Fixes: 80690a27 ("ALSA: hda/realtek - Add quirk for Tuxedo XC 1509") Signed-off-by:
Richard Sailer <rs@tuxedocomputers.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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Colin Ian King authored
commit 2acf5a3e upstream. There are a couple of left shifts of unsigned 8 bit values that first get promoted to signed ints and hence get sign extended on the shift if the top bit of the 8 bit values are set. Fix this by casting the 8 bit values to unsigned ints to stop the unintentional sign extension. Addresses-Coverity: ("Unintended sign extension") Signed-off-by:
Colin Ian King <colin.king@canonical.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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Takashi Iwai authored
commit 34501219 upstream. LINE6 drivers allocate the buffers based on the value returned from usb_maxpacket() calls. The manipulated device may return zero for this, and this results in the kmalloc() with zero size (and it may succeed) while the other part of the driver code writes the packet data with the fixed size -- which eventually overwrites. This patch adds a simple sanity check for the invalid buffer size for avoiding that problem. Reported-by: syzbot+219f00fb49874dcaea17@syzkaller.appspotmail.com Cc: <stable@vger.kernel.org> Signed-off-by:
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Takashi Sakamoto authored
commit 7fbd1753 upstream. In IEC 61883-6, 8 MIDI data streams are multiplexed into single MIDI conformant data channel. The index of stream is calculated by modulo 8 of the value of data block counter. In fireworks, the value of data block counter in CIP header has a quirk with firmware version v5.0.0, v5.7.3 and v5.8.0. This brings ALSA IEC 61883-1/6 packet streaming engine to miss detection of MIDI messages. This commit fixes the miss detection to modify the value of data block counter for the modulo calculation. For maintainers, this bug exists since a commit 18f5ed36 ("ALSA: fireworks/firewire-lib: add support for recent firmware quirk") in Linux kernel v4.2. There're many changes since the commit. This fix can be backported to Linux kernel v4.4 or later. I tagged a base commit to the backport for your convenience. Besides, my work for Linux kernel v5.3 brings heavy code refactoring and some structure members are renamed in 'sound/firewire/amdtp-stream.h'. The content of this patch brings conflict when merging -rc tree with this patch and the latest tree. I request maintainers to solve the conflict to replace 'tx_first_dbc' with 'ctx_data.tx.first_dbc'. Fixes: df075fee ("ALSA: firewire-lib: complete AM824 data block processing layer") Cc: <stable@vger.kernel.org> # v4.4+ Signed-off-by:
Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by:
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Colin Ian King authored
commit c3ea60c2 upstream. There are two occurrances of a call to snd_seq_oss_fill_addr where the dest_client and dest_port arguments are in the wrong order. Fix this by swapping them around. Addresses-Coverity: ("Arguments in wrong order") Signed-off-by:
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Vincent Whitchurch authored
commit 1a0fad63 upstream. cryptd_skcipher_free() fails to free the struct skcipher_instance allocated in cryptd_create_skcipher(), leading to a memory leak. This is detected by kmemleak on bootup on ARM64 platforms: unreferenced object 0xffff80003377b180 (size 1024): comm "cryptomgr_probe", pid 822, jiffies 4294894830 (age 52.760s) backtrace: kmem_cache_alloc_trace+0x270/0x2d0 cryptd_create+0x990/0x124c cryptomgr_probe+0x5c/0x1e8 kthread+0x258/0x318 ret_from_fork+0x10/0x1c Fixes: 4e0958d1 ("crypto: cryptd - Add support for skcipher") Cc: <stable@vger.kernel.org> Signed-off-by:
Vincent Whitchurch <vincent.whitchurch@axis.com> Signed-off-by:
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Eric Biggers authored
commit 21d4120e upstream. Michal Suchanek reported [1] that running the pcrypt_aead01 test from LTP [2] in a loop and holding Ctrl-C causes a NULL dereference of alg->cra_users.next in crypto_remove_spawns(), via crypto_del_alg(). The test repeatedly uses CRYPTO_MSG_NEWALG and CRYPTO_MSG_DELALG. The crash occurs when the instance that CRYPTO_MSG_DELALG is trying to unregister isn't a real registered algorithm, but rather is a "test larval", which is a special "algorithm" added to the algorithms list while the real algorithm is still being tested. Larvals don't have initialized cra_users, so that causes the crash. Normally pcrypt_aead01 doesn't trigger this because CRYPTO_MSG_NEWALG waits for the algorithm to be tested; however, CRYPTO_MSG_NEWALG returns early when interrupted. Everything else in the "crypto user configuration" API has this same bug too, i.e. it inappropriately allows operating on larval algorithms (though it doesn't look like the other cases can cause a crash). Fix this by making crypto_alg_match() exclude larval algorithms. [1] https://lkml.kernel.org/r/20190625071624.27039-1-msuchanek@suse.de [2] https://github.com/linux-test-project/ltp/blob/20190517/testcases/kernel/crypto/pcrypt_aead01.cReported-by:
Michal Suchanek <msuchanek@suse.de> Fixes: a38f7907 ("crypto: Add userspace configuration API") Cc: <stable@vger.kernel.org> # v3.2+ Cc: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by:
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Jann Horn authored
commit 6994eefb upstream. Fix two issues: When called for PTRACE_TRACEME, ptrace_link() would obtain an RCU reference to the parent's objective credentials, then give that pointer to get_cred(). However, the object lifetime rules for things like struct cred do not permit unconditionally turning an RCU reference into a stable reference. PTRACE_TRACEME records the parent's credentials as if the parent was acting as the subject, but that's not the case. If a malicious unprivileged child uses PTRACE_TRACEME and the parent is privileged, and at a later point, the parent process becomes attacker-controlled (because it drops privileges and calls execve()), the attacker ends up with control over two processes with a privileged ptrace relationship, which can be abused to ptrace a suid binary and obtain root privileges. Fix both of these by always recording the credentials of the process that is requesting the creation of the ptrace relationship: current_cred() can't change under us, and current is the proper subject for access control. This change is theoretically userspace-visible, but I am not aware of any code that it will actually break. Fixes: 64b875f7 ("ptrace: Capture the ptracer's creds not PT_PTRACE_CAP") Signed-off-by:
Jann Horn <jannh@google.com> Acked-by:
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Wei Li authored
[ Upstream commit 04e03d9a ] The mapper may be NULL when called from register_ftrace_function_probe() with probe->data == NULL. This issue can be reproduced as follow (it may be covered by compiler optimization sometime): / # cat /sys/kernel/debug/tracing/set_ftrace_filter #### all functions enabled #### / # echo foo_bar:dump > /sys/kernel/debug/tracing/set_ftrace_filter [ 206.949100] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 206.952402] Mem abort info: [ 206.952819] ESR = 0x96000006 [ 206.955326] Exception class = DABT (current EL), IL = 32 bits [ 206.955844] SET = 0, FnV = 0 [ 206.956272] EA = 0, S1PTW = 0 [ 206.956652] Data abort info: [ 206.957320] ISV = 0, ISS = 0x00000006 [ 206.959271] CM = 0, WnR = 0 [ 206.959938] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000419f3a000 [ 206.960483] [0000000000000000] pgd=0000000411a87003, pud=0000000411a83003, pmd=0000000000000000 [ 206.964953] Internal error: Oops: 96000006 [#1] SMP [ 206.971122] Dumping ftrace buffer: [ 206.973677] (ftrace buffer empty) [ 206.975258] Modules linked in: [ 206.976631] Process sh (pid: 281, stack limit = 0x(____ptrval____)) [ 206.978449] CPU: 10 PID: 281 Comm: sh Not tainted 5.2.0-rc1+ #17 [ 206.978955] Hardware name: linux,dummy-virt (DT) [ 206.979883] pstate: 60000005 (nZCv daif -PAN -UAO) [ 206.980499] pc : free_ftrace_func_mapper+0x2c/0x118 [ 206.980874] lr : ftrace_count_free+0x68/0x80 [ 206.982539] sp : ffff0000182f3ab0 [ 206.983102] x29: ffff0000182f3ab0 x28: ffff8003d0ec1700 [ 206.983632] x27: ffff000013054b40 x26: 0000000000000001 [ 206.984000] x25: ffff00001385f000 x24: 0000000000000000 [ 206.984394] x23: ffff000013453000 x22: ffff000013054000 [ 206.984775] x21: 0000000000000000 x20: ffff00001385fe28 [ 206.986575] x19: ffff000013872c30 x18: 0000000000000000 [ 206.987111] x17: 0000000000000000 x16: 0000000000000000 [ 206.987491] x15: ffffffffffffffb0 x14: 0000000000000000 [ 206.987850] x13: 000000000017430e x12: 0000000000000580 [ 206.988251] x11: 0000000000000000 x10: cccccccccccccccc [ 206.988740] x9 : 0000000000000000 x8 : ffff000013917550 [ 206.990198] x7 : ffff000012fac2e8 x6 : ffff000012fac000 [ 206.991008] x5 : ffff0000103da588 x4 : 0000000000000001 [ 206.991395] x3 : 0000000000000001 x2 : ffff000013872a28 [ 206.991771] x1 : 0000000000000000 x0 : 0000000000000000 [ 206.992557] Call trace: [ 206.993101] free_ftrace_func_mapper+0x2c/0x118 [ 206.994827] ftrace_count_free+0x68/0x80 [ 206.995238] release_probe+0xfc/0x1d0 [ 206.995555] register_ftrace_function_probe+0x4a8/0x868 [ 206.995923] ftrace_trace_probe_callback.isra.4+0xb8/0x180 [ 206.996330] ftrace_dump_callback+0x50/0x70 [ 206.996663] ftrace_regex_write.isra.29+0x290/0x3a8 [ 206.997157] ftrace_filter_write+0x44/0x60 [ 206.998971] __vfs_write+0x64/0xf0 [ 206.999285] vfs_write+0x14c/0x2f0 [ 206.999591] ksys_write+0xbc/0x1b0 [ 206.999888] __arm64_sys_write+0x3c/0x58 [ 207.000246] el0_svc_common.constprop.0+0x408/0x5f0 [ 207.000607] el0_svc_handler+0x144/0x1c8 [ 207.000916] el0_svc+0x8/0xc [ 207.003699] Code: aa0003f8 a9025bf5 aa0103f5 f946ea80 (f9400303) [ 207.008388] ---[ end trace 7b6d11b5f542bdf1 ]--- [ 207.010126] Kernel panic - not syncing: Fatal exception [ 207.011322] SMP: stopping secondary CPUs [ 207.013956] Dumping ftrace buffer: [ 207.014595] (ftrace buffer empty) [ 207.015632] Kernel Offset: disabled [ 207.017187] CPU features: 0x002,20006008 [ 207.017985] Memory Limit: none [ 207.019825] ---[ end Kernel panic - not syncing: Fatal exception ]--- Link: http://lkml.kernel.org/r/20190606031754.10798-1-liwei391@huawei.comSigned-off-by:
Wei Li <liwei391@huawei.com> Signed-off-by:
Sasha Levin <sashal@kernel.org>
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Josh Poimboeuf authored
[ Upstream commit 9f255b63 ] It's possible for livepatch and ftrace to be toggling a module's text permissions at the same time, resulting in the following panic: BUG: unable to handle page fault for address: ffffffffc005b1d9 #PF: supervisor write access in kernel mode #PF: error_code(0x0003) - permissions violation PGD 3ea0c067 P4D 3ea0c067 PUD 3ea0e067 PMD 3cc13067 PTE 3b8a1061 Oops: 0003 [#1] PREEMPT SMP PTI CPU: 1 PID: 453 Comm: insmod Tainted: G O K 5.2.0-rc1-a188339c #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-20181126_142135-anatol 04/01/2014 RIP: 0010:apply_relocate_add+0xbe/0x14c Code: fa 0b 74 21 48 83 fa 18 74 38 48 83 fa 0a 75 40 eb 08 48 83 38 00 74 33 eb 53 83 38 00 75 4e 89 08 89 c8 eb 0a 83 38 00 75 43 <89> 08 48 63 c1 48 39 c8 74 2e eb 48 83 38 00 75 32 48 29 c1 89 08 RSP: 0018:ffffb223c00dbb10 EFLAGS: 00010246 RAX: ffffffffc005b1d9 RBX: 0000000000000000 RCX: ffffffff8b200060 RDX: 000000000000000b RSI: 0000004b0000000b RDI: ffff96bdfcd33000 RBP: ffffb223c00dbb38 R08: ffffffffc005d040 R09: ffffffffc005c1f0 R10: ffff96bdfcd33c40 R11: ffff96bdfcd33b80 R12: 0000000000000018 R13: ffffffffc005c1f0 R14: ffffffffc005e708 R15: ffffffff8b2fbc74 FS: 00007f5f447beba8(0000) GS:ffff96bdff900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffc005b1d9 CR3: 000000003cedc002 CR4: 0000000000360ea0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: klp_init_object_loaded+0x10f/0x219 ? preempt_latency_start+0x21/0x57 klp_enable_patch+0x662/0x809 ? virt_to_head_page+0x3a/0x3c ? kfree+0x8c/0x126 patch_init+0x2ed/0x1000 [livepatch_test02] ? 0xffffffffc0060000 do_one_initcall+0x9f/0x1c5 ? kmem_cache_alloc_trace+0xc4/0xd4 ? do_init_module+0x27/0x210 do_init_module+0x5f/0x210 load_module+0x1c41/0x2290 ? fsnotify_path+0x3b/0x42 ? strstarts+0x2b/0x2b ? kernel_read+0x58/0x65 __do_sys_finit_module+0x9f/0xc3 ? __do_sys_finit_module+0x9f/0xc3 __x64_sys_finit_module+0x1a/0x1c do_syscall_64+0x52/0x61 entry_SYSCALL_64_after_hwframe+0x44/0xa9 The above panic occurs when loading two modules at the same time with ftrace enabled, where at least one of the modules is a livepatch module: CPU0 CPU1 klp_enable_patch() klp_init_object_loaded() module_disable_ro() ftrace_module_enable() ftrace_arch_code_modify_post_process() set_all_modules_text_ro() klp_write_object_relocations() apply_relocate_add() *patches read-only code* - BOOM A similar race exists when toggling ftrace while loading a livepatch module. Fix it by ensuring that the livepatch and ftrace code patching operations -- and their respective permissions changes -- are protected by the text_mutex. Link: http://lkml.kernel.org/r/ab43d56ab909469ac5d2520c5d944ad6d4abd476.1560474114.git.jpoimboe@redhat.comReported-by:
Johannes Erdfelt <johannes@erdfelt.com> Fixes: 444d13ff ("modules: add ro_after_init support") Acked-by:
Jessica Yu <jeyu@kernel.org> Reviewed-by:
Petr Mladek <pmladek@suse.com> Reviewed-by:
Miroslav Benes <mbenes@suse.cz> Signed-off-by:
Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by:
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Vasily Gorbik authored
[ Upstream commit cbdaeaf0 ] Selecting HAVE_NOP_MCOUNT enables -mnop-mcount (if gcc supports it) and sets CC_USING_NOP_MCOUNT. Reuse __is_defined (which is suitable for testing CC_USING_* defines) to avoid conditional compilation and fix the following gcc 9 warning on s390: kernel/trace/ftrace.c:2514:1: warning: ‘ftrace_code_disable’ defined but not used [-Wunused-function] Link: http://lkml.kernel.org/r/patch.git-1a82d13f33ac.your-ad-here.call-01559732716-ext-6629@work.hours Fixes: 2f4df001 ("tracing: Add -mcount-nop option support") Signed-off-by:
Vasily Gorbik <gor@linux.ibm.com> Signed-off-by:
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swkhack authored
[ Upstream commit 0874bb49 ] On a 64-bit machine the value of "vma->vm_end - vma->vm_start" may be negative when using 32 bit ints and the "count >> PAGE_SHIFT"'s result will be wrong. So change the local variable and return value to unsigned long to fix the problem. Link: http://lkml.kernel.org/r/20190513023701.83056-1-swkhack@gmail.com Fixes: 0cf2f6f6 ("mm: mlock: check against vma for actual mlock() size") Signed-off-by:
swkhack <swkhack@gmail.com> Acked-by:
Michal Hocko <mhocko@suse.com> Reviewed-by:
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Manuel Traut authored
[ Upstream commit c04e32e9 ] At least for ARM64 kernels compiled with the crosstoolchain from Debian/stretch or with the toolchain from kernel.org the line number is not decoded correctly by 'decode_stacktrace.sh': $ echo "[ 136.513051] f1+0x0/0xc [kcrash]" | \ CROSS_COMPILE=/opt/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux- \ ./scripts/decode_stacktrace.sh /scratch/linux-arm64/vmlinux \ /scratch/linux-arm64 \ /nfs/debian/lib/modules/4.20.0-devel [ 136.513051] f1 (/linux/drivers/staging/kcrash/kcrash.c:68) kcrash If addr2line from the toolchain is used the decoded line number is correct: [ 136.513051] f1 (/linux/drivers/staging/kcrash/kcrash.c:57) kcrash Link: http://lkml.kernel.org/r/20190527083425.3763-1-manut@linutronix.deSigned-off-by:
Manuel Traut <manut@linutronix.de> Acked-by:
Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by:
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Joel Savitz authored
[ Upstream commit d477f8c2 ] In the case that a process is constrained by taskset(1) (i.e. sched_setaffinity(2)) to a subset of available cpus, and all of those are subsequently offlined, the scheduler will set tsk->cpus_allowed to the current value of task_cs(tsk)->effective_cpus. This is done via a call to do_set_cpus_allowed() in the context of cpuset_cpus_allowed_fallback() made by the scheduler when this case is detected. This is the only call made to cpuset_cpus_allowed_fallback() in the latest mainline kernel. However, this is not sane behavior. I will demonstrate this on a system running the latest upstream kernel with the following initial configuration: # grep -i cpu /proc/$$/status Cpus_allowed: ffffffff,fffffff Cpus_allowed_list: 0-63 (Where cpus 32-63 are provided via smt.) If we limit our current shell process to cpu2 only and then offline it and reonline it: # taskset -p 4 $$ pid 2272's current affinity mask: ffffffffffffffff pid 2272's new affinity mask: 4 # echo off > /sys/devices/system/cpu/cpu2/online # dmesg | tail -3 [ 2195.866089] process 2272 (bash) no longer affine to cpu2 [ 2195.872700] IRQ 114: no longer affine to CPU2 [ 2195.879128] smpboot: CPU 2 is now offline # echo on > /sys/devices/system/cpu/cpu2/online # dmesg | tail -1 [ 2617.043572] smpboot: Booting Node 0 Processor 2 APIC 0x4 We see that our current process now has an affinity mask containing every cpu available on the system _except_ the one we originally constrained it to: # grep -i cpu /proc/$$/status Cpus_allowed: ffffffff,fffffffb Cpus_allowed_list: 0-1,3-63 This is not sane behavior, as the scheduler can now not only place the process on previously forbidden cpus, it can't even schedule it on the cpu it was originally constrained to! Other cases result in even more exotic affinity masks. Take for instance a process with an affinity mask containing only cpus provided by smt at the moment that smt is toggled, in a configuration such as the following: # taskset -p f000000000 $$ # grep -i cpu /proc/$$/status Cpus_allowed: 000000f0,00000000 Cpus_allowed_list: 36-39 A double toggle of smt results in the following behavior: # echo off > /sys/devices/system/cpu/smt/control # echo on > /sys/devices/system/cpu/smt/control # grep -i cpus /proc/$$/status Cpus_allowed: ffffff00,ffffffff Cpus_allowed_list: 0-31,40-63 This is even less sane than the previous case, as the new affinity mask excludes all smt-provided cpus with ids less than those that were previously in the affinity mask, as well as those that were actually in the mask. With this patch applied, both of these cases end in the following state: # grep -i cpu /proc/$$/status Cpus_allowed: ffffffff,ffffffff Cpus_allowed_list: 0-63 The original policy is discarded. Though not ideal, it is the simplest way to restore sanity to this fallback case without reinventing the cpuset wheel that rolls down the kernel just fine in cgroup v2. A user who wishes for the previous affinity mask to be restored in this fallback case can use that mechanism instead. This patch modifies scheduler behavior by instead resetting the mask to task_cs(tsk)->cpus_allowed by default, and cpu_possible mask in legacy mode. I tested the cases above on both modes. Note that the scheduler uses this fallback mechanism if and only if _every_ other valid avenue has been traveled, and it is the last resort before calling BUG(). Suggested-by:
Waiman Long <longman@redhat.com> Suggested-by:
Phil Auld <pauld@redhat.com> Signed-off-by:
Joel Savitz <jsavitz@redhat.com> Acked-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Tejun Heo <tj@kernel.org> Signed-off-by:
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Will Deacon authored
[ Upstream commit 01d57485 ] Since commit 3d65b6bb ("arm64: tlbi: Set MAX_TLBI_OPS to PTRS_PER_PTE"), we resort to per-ASID invalidation when attempting to perform more than PTRS_PER_PTE invalidation instructions in a single call to __flush_tlb_range(). Whilst this is beneficial, the mmu_gather code does not ensure that the end address of the range is rounded-up to the stride when freeing intermediate page tables in pXX_free_tlb(), which defeats our range checking. Align the bounds passed into __flush_tlb_range(). Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Reported-by:
Hanjun Guo <guohanjun@huawei.com> Tested-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
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Linus Walleij authored
[ Upstream commit a0cac264 ] The devm_gpiod_request_gpiod() call will add "-gpios" to any passed connection ID before looking it up. I do not think the reset GPIO on this platform is named "reset-gpios-gpios" but rather "reset-gpios" in the device tree, so fix this up so that we get a proper reset GPIO handle. Also drop the inclusion of the legacy GPIO header. Fixes: 0e8ce93b ("i2c: pca-platform: add devicetree awareness") Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Reviewed-by:
Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by:
Wolfram Sang <wsa@the-dreams.de> Signed-off-by:
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Vadim Pasternak authored
[ Upstream commit 8c2eb7b6 ] Add devm_free_irq() call to mlxreg-hotplug remove() for clean release of devices irq resource. Fix debugobjects warning triggered by rmmod It prevents of use-after-free memory, related to mlxreg_hotplug_work_handler. Issue has been reported as debugobjects warning triggered by 'rmmod mlxtreg-hotplug' flow, while running kernel with CONFIG_DEBUG_OBJECTS* options. [ 2489.623551] ODEBUG: free active (active state 0) object type: work_struct hint: mlxreg_hotplug_work_handler+0x0/0x7f0 [mlxreg_hotplug] [ 2489.637097] WARNING: CPU: 5 PID: 3924 at lib/debugobjects.c:328 debug_print_object+0xfe/0x180 [ 2489.637165] RIP: 0010:debug_print_object+0xfe/0x180 ? [ 2489.637214] Call Trace: [ 2489.637225] __debug_check_no_obj_freed+0x25e/0x320 [ 2489.637231] kfree+0x82/0x110 [ 2489.637238] release_nodes+0x33c/0x4e0 [ 2489.637242] ? devres_remove_group+0x1b0/0x1b0 [ 2489.637247] device_release_driver_internal+0x146/0x270 [ 2489.637251] driver_detach+0x73/0xe0 [ 2489.637254] bus_remove_driver+0xa1/0x170 [ 2489.637261] __x64_sys_delete_module+0x29e/0x320 [ 2489.637265] ? __ia32_sys_delete_module+0x320/0x320 [ 2489.637268] ? blkcg_exit_queue+0x20/0x20 [ 2489.637273] ? task_work_run+0x7d/0x100 [ 2489.637278] ? exit_to_usermode_loop+0x5b/0xf0 [ 2489.637281] do_syscall_64+0x73/0x160 [ 2489.637287] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 2489.637290] RIP: 0033:0x7f95c3596fd7 The difference in release flow with and with no devm_free_irq is listed below: bus: 'platform': remove driver mlxreg-hotplug mlxreg_hotplug_remove(start) -> devm_free_irq (with new code) mlxreg_hotplug_remove (end) release_nodes (start) mlxreg-hotplug: DEVRES REL devm_hwmon_release (8 bytes) device: 'hwmon3': device_unregister PM: Removing info for No Bus:hwmon3 mlxreg-hotplug: DEVRES REL devm_kzalloc_release (88 bytes) mlxreg-hotplug: DEVRES REL devm_kzalloc_release (6 bytes) mlxreg-hotplug: DEVRES REL devm_kzalloc_release (5 bytes) mlxreg-hotplug: DEVRES REL devm_kzalloc_release (5 bytes) mlxreg-hotplug: DEVRES REL devm_kzalloc_release (5 bytes) mlxreg-hotplug: DEVRES REL devm_kzalloc_release (5 bytes) mlxreg-hotplug: DEVRES REL devm_kzalloc_release (5 bytes) mlxreg-hotplug: DEVRES REL devm_kzalloc_release (5 bytes) mlxreg-hotplug: DEVRES REL devm_kzalloc_release (5 bytes) mlxreg-hotplug: DEVRES REL devm_kzalloc_release (5 bytes) mlxreg-hotplug: DEVRES REL devm_kzalloc_release (5 bytes) mlxreg-hotplug: DEVRES REL devm_kzalloc_release (5 bytes) mlxreg-hotplug: DEVRES REL devm_irq_release (16 bytes) (no new code) mlxreg-hotplug: DEVRES REL devm_kzalloc_release (1376 bytes) ------------[ cut here ]------------ (no new code): ODEBUG: free active (active state 0) object type: work_struct hint: mlxreg_hotplug_work_handler release_nodes(end) driver: 'mlxreg-hotplug': driver_release Fixes: 1f976f69 ("platform/x86: Move Mellanox platform hotplug driver to platform/mellanox") Signed-off-by:
Vadim Pasternak <vadimp@mellanox.com> Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
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Vadim Pasternak authored
[ Upstream commit 160da20b ] Fix the issue found while running kernel with the option CONFIG_DEBUG_TEST_DRIVER_REMOVE. Driver 'mlx-platform' registers 'i2c_mlxcpld' device and then registers few underlying 'i2c-mux-reg' devices: priv->pdev_i2c = platform_device_register_simple("i2c_mlxcpld", nr, NULL, 0); ... for (i = 0; i < ARRAY_SIZE(mlxplat_mux_data); i++) { priv->pdev_mux[i] = platform_device_register_resndata( &mlxplat_dev->dev, "i2c-mux-reg", i, NULL, 0, &mlxplat_mux_data[i], sizeof(mlxplat_mux_data[i])); But actual parent of "i2c-mux-reg" device is priv->pdev_i2c->dev and not mlxplat_dev->dev. Patch fixes parent device parameter in a call to platform_device_register_resndata() for "i2c-mux-reg". It solves the race during initialization flow while 'i2c_mlxcpld.1' is removing after probe, while 'i2c-mux-reg.0' is still in probing flow: 'i2c_mlxcpld.1' flow: probe -> remove -> probe. 'i2c-mux-reg.0' flow: probe -> ... [ 12:621096] Registering platform device 'i2c_mlxcpld.1'. Parent at platform [ 12:621117] device: 'i2c_mlxcpld.1': device_add [ 12:621155] bus: 'platform': add device i2c_mlxcpld.1 [ 12:621384] Registering platform device 'i2c-mux-reg.0'. Parent at mlxplat [ 12:621395] device: 'i2c-mux-reg.0': device_add [ 12:621425] bus: 'platform': add device i2c-mux-reg.0 [ 12:621806] Registering platform device 'i2c-mux-reg.1'. Parent at mlxplat [ 12:621828] device: 'i2c-mux-reg.1': device_add [ 12:621892] bus: 'platform': add device i2c-mux-reg.1 [ 12:621906] bus: 'platform': add driver i2c_mlxcpld [ 12:621996] bus: 'platform': driver_probe_device: matched device i2c_mlxcpld.1 with driver i2c_mlxcpld [ 12:622003] bus: 'platform': really_probe: probing driver i2c_mlxcpld with device i2c_mlxcpld.1 [ 12:622100] i2c_mlxcpld i2c_mlxcpld.1: no default pinctrl state [ 12:622293] device: 'i2c-1': device_add [ 12:627280] bus: 'i2c': add device i2c-1 [ 12:627692] device: 'i2c-1': device_add [ 12.629639] bus: 'platform': add driver i2c-mux-reg [ 12.629718] bus: 'platform': driver_probe_device: matched device i2c-mux-reg.0 with driver i2c-mux-reg [ 12.629723] bus: 'platform': really_probe: probing driver i2c-mux-reg with device i2c-mux-reg.0 [ 12.629818] i2c-mux-reg i2c-mux-reg.0: no default pinctrl state [ 12.629981] platform i2c-mux-reg.0: Driver i2c-mux-reg requests probe deferral [ 12.629986] platform i2c-mux-reg.0: Added to deferred list [ 12.629992] bus: 'platform': driver_probe_device: matched device i2c-mux-reg.1 with driver i2c-mux-reg [ 12.629997] bus: 'platform': really_probe: probing driver i2c-mux-reg with device i2c-mux-reg.1 [ 12.630091] i2c-mux-reg i2c-mux-reg.1: no default pinctrl state [ 12.630247] platform i2c-mux-reg.1: Driver i2c-mux-reg requests probe deferral [ 12.630252] platform i2c-mux-reg.1: Added to deferred list [ 12.640892] devices_kset: Moving i2c-mux-reg.0 to end of list [ 12.640900] platform i2c-mux-reg.0: Retrying from deferred list [ 12.640911] bus: 'platform': driver_probe_device: matched device i2c-mux-reg.0 with driver i2c-mux-reg [ 12.640919] bus: 'platform': really_probe: probing driver i2c-mux-reg with device i2c-mux-reg.0 [ 12.640999] i2c-mux-reg i2c-mux-reg.0: no default pinctrl state [ 12.641177] platform i2c-mux-reg.0: Driver i2c-mux-reg requests probe deferral [ 12.641187] platform i2c-mux-reg.0: Added to deferred list [ 12.641198] devices_kset: Moving i2c-mux-reg.1 to end of list [ 12.641219] platform i2c-mux-reg.1: Retrying from deferred list [ 12.641237] bus: 'platform': driver_probe_device: matched device i2c-mux-reg.1 with driver i2c-mux-reg [ 12.641247] bus: 'platform': really_probe: probing driver i2c-mux-reg with device i2c-mux-reg.1 [ 12.641331] i2c-mux-reg i2c-mux-reg.1: no default pinctrl state [ 12.641465] platform i2c-mux-reg.1: Driver i2c-mux-reg requests probe deferral [ 12.641469] platform i2c-mux-reg.1: Added to deferred list [ 12.646427] device: 'i2c-1': device_add [ 12.646647] bus: 'i2c': add device i2c-1 [ 12.647104] device: 'i2c-1': device_add [ 12.669231] devices_kset: Moving i2c-mux-reg.0 to end of list [ 12.669240] platform i2c-mux-reg.0: Retrying from deferred list [ 12.669258] bus: 'platform': driver_probe_device: matched device i2c-mux-reg.0 with driver i2c-mux-reg [ 12.669263] bus: 'platform': really_probe: probing driver i2c-mux-reg with device i2c-mux-reg.0 [ 12.669343] i2c-mux-reg i2c-mux-reg.0: no default pinctrl state [ 12.669585] device: 'i2c-2': device_add [ 12.669795] bus: 'i2c': add device i2c-2 [ 12.670201] device: 'i2c-2': device_add [ 12.671427] i2c i2c-1: Added multiplexed i2c bus 2 [ 12.671514] device: 'i2c-3': device_add [ 12.671724] bus: 'i2c': add device i2c-3 [ 12.672136] device: 'i2c-3': device_add [ 12.673378] i2c i2c-1: Added multiplexed i2c bus 3 [ 12.673472] device: 'i2c-4': device_add [ 12.673676] bus: 'i2c': add device i2c-4 [ 12.674060] device: 'i2c-4': device_add [ 12.675861] i2c i2c-1: Added multiplexed i2c bus 4 [ 12.675941] device: 'i2c-5': device_add [ 12.676150] bus: 'i2c': add device i2c-5 [ 12.676550] device: 'i2c-5': device_add [ 12.678103] i2c i2c-1: Added multiplexed i2c bus 5 [ 12.678193] device: 'i2c-6': device_add [ 12.678395] bus: 'i2c': add device i2c-6 [ 12.678774] device: 'i2c-6': device_add [ 12.679969] i2c i2c-1: Added multiplexed i2c bus 6 [ 12.680065] device: 'i2c-7': device_add [ 12.680275] bus: 'i2c': add device i2c-7 [ 12.680913] device: 'i2c-7': device_add [ 12.682506] i2c i2c-1: Added multiplexed i2c bus 7 [ 12.682600] device: 'i2c-8': device_add [ 12.682808] bus: 'i2c': add device i2c-8 [ 12.683189] device: 'i2c-8': device_add [ 12.683907] device: 'i2c-1': device_unregister [ 12.683945] device: 'i2c-1': device_unregister [ 12.684387] device: 'i2c-1': device_create_release [ 12.684536] bus: 'i2c': remove device i2c-1 [ 12.686019] i2c i2c-8: Failed to create compatibility class link [ 12.686086] ------------[ cut here ]------------ [ 12.686087] can't create symlink to mux device [ 12.686224] Workqueue: events deferred_probe_work_func [ 12.686135] WARNING: CPU: 7 PID: 436 at drivers/i2c/i2c-mux.c:416 i2c_mux_add_adapter+0x729/0x7d0 [i2c_mux] [ 12.686232] RIP: 0010:i2c_mux_add_adapter+0x729/0x7d0 [i2c_mux] [ 0x190/0x190 [i2c_mux] [ 12.686300] ? i2c_mux_alloc+0xac/0x110 [i2c_mux] [ 12.686306] ? i2c_mux_reg_set+0x200/0x200 [i2c_mux_reg] [ 12.686313] i2c_mux_reg_probe+0x22c/0x731 [i2c_mux_reg] [ 12.686322] ? i2c_mux_reg_deselect+0x60/0x60 [i2c_mux_reg] [ 12.686346] platform_drv_probe+0xa8/0x110 [ 12.686351] really_probe+0x185/0x720 [ 12.686358] driver_probe_device+0xdf/0x1f0 ... [ 12.686522] i2c i2c-1: Added multiplexed i2c bus 8 [ 12.686621] device: 'i2c-9': device_add [ 12.686626] kobject_add_internal failed for i2c-9 (error: -2 parent: i2c-1) [ 12.694729] i2c-core: adapter 'i2c-1-mux (chan_id 8)': can't register device (-2) [ 12.705726] i2c i2c-1: failed to add mux-adapter 8 as bus 9 (error=-2) [ 12.714494] device: 'i2c-8': device_unregister [ 12.714537] device: 'i2c-8': device_unregister Fixes: 6613d18e ("platform/x86: mlx-platform: Move module from arch/x86") Signed-off-by:
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Mathew King authored
[ Upstream commit cb1921b1 ] When a switch event, such as tablet mode/laptop mode or docked/undocked, wakes a device make sure that the value of the swich is reported. Without when a device is put in tablet mode from laptop mode when it is suspended or vice versa the device will wake up but mode will be incorrect. Tested by suspending a device in laptop mode and putting it in tablet mode, the device resumes and is in tablet mode. When suspending the device in tablet mode and putting it in laptop mode the device resumes and is in laptop mode. Signed-off-by:
Mathew King <mathewk@chromium.org> Reviewed-by:
Jett Rink <jettrink@chromium.org> Reviewed-by:
Mario Limonciello <mario.limonciello@dell.com> Signed-off-by:
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Hans de Goede authored
[ Upstream commit 401fee81 ] Commit 78f3ac76 ("platform/x86: asus-wmi: Tell the EC the OS will handle the display off hotkey") causes the backlight to be permanently off on various EeePC laptop models using the eeepc-wmi driver (Asus EeePC 1015BX, Asus EeePC 1025C). The asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL) call added by that commit is made conditional in this commit and only enabled in the quirk_entry structs in the asus-nb-wmi driver fixing the broken display / backlight on various EeePC laptop models. Cc: João Paulo Rechi Vita <jprvita@endlessm.com> Fixes: 78f3ac76 ("platform/x86: asus-wmi: Tell the EC the OS will handle the display off hotkey") Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
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Alex Levin authored
[ Upstream commit 3da428ff ] When calling kmalloc with GFP_KERNEL in case CONFIG_SLOB is unset, kmem_cache_alloc_trace is called. In case CONFIG_TRACING is set, kmem_cache_alloc_trace will ball slab_alloc, which will call slab_pre_alloc_hook which might_sleep_if. The context in which it is called in this case, the intel_sst_interrupt_mrfld, calling a sleeping kmalloc generates a BUG(): Fixes: 972b0d45 ("ASoC: Intel: remove GFP_ATOMIC, use GFP_KERNEL") [ 20.250671] BUG: sleeping function called from invalid context at mm/slab.h:422 [ 20.250683] in_atomic(): 1, irqs_disabled(): 1, pid: 1791, name: Chrome_IOThread [ 20.250690] CPU: 0 PID: 1791 Comm: Chrome_IOThread Tainted: G W 4.19.43 #61 [ 20.250693] Hardware name: GOOGLE Kefka, BIOS Google_Kefka.7287.337.0 03/02/2017 [ 20.250697] Call Trace: [ 20.250704] <IRQ> [ 20.250716] dump_stack+0x7e/0xc3 [ 20.250725] ___might_sleep+0x12a/0x140 [ 20.250731] kmem_cache_alloc_trace+0x53/0x1c5 [ 20.250736] ? update_cfs_rq_load_avg+0x17e/0x1aa [ 20.250740] ? cpu_load_update+0x6c/0xc2 [ 20.250746] sst_create_ipc_msg+0x2d/0x88 [ 20.250752] intel_sst_interrupt_mrfld+0x12a/0x22c [ 20.250758] __handle_irq_event_percpu+0x133/0x228 [ 20.250764] handle_irq_event_percpu+0x35/0x7a [ 20.250768] handle_irq_event+0x36/0x55 [ 20.250773] handle_fasteoi_irq+0xab/0x16c [ 20.250779] handle_irq+0xd9/0x11e [ 20.250785] do_IRQ+0x54/0xe0 [ 20.250791] common_interrupt+0xf/0xf [ 20.250795] </IRQ> [ 20.250800] RIP: 0010:__lru_cache_add+0x4e/0xad [ 20.250806] Code: 00 01 48 c7 c7 b8 df 01 00 65 48 03 3c 25 28 f1 00 00 48 8b 48 08 48 89 ca 48 ff ca f6 c1 01 48 0f 44 d0 f0 ff 42 34 0f b6 0f <89> ca fe c2 88 17 48 89 44 cf 08 80 fa 0f 74 0e 48 8b 08 66 85 c9 [ 20.250809] RSP: 0000:ffffa568810bfd98 EFLAGS: 00000202 ORIG_RAX: ffffffffffffffd6 [ 20.250814] RAX: ffffd3b904eb1940 RBX: ffffd3b904eb1940 RCX: 0000000000000004 [ 20.250817] RDX: ffffd3b904eb1940 RSI: ffffa10ee5c47450 RDI: ffffa10efba1dfb8 [ 20.250821] RBP: ffffa568810bfda8 R08: ffffa10ef9c741c1 R09: dead000000000100 [ 20.250824] R10: 0000000000000000 R11: 0000000000000000 R12: ffffa10ee8d52a40 [ 20.250827] R13: ffffa10ee8d52000 R14: ffffa10ee5c47450 R15: 800000013ac65067 [ 20.250835] lru_cache_add_active_or_unevictable+0x4e/0xb8 [ 20.250841] handle_mm_fault+0xd98/0x10c4 [ 20.250848] __do_page_fault+0x235/0x42d [ 20.250853] ? page_fault+0x8/0x30 [ 20.250858] do_page_fault+0x3d/0x17a [ 20.250862] ? page_fault+0x8/0x30 [ 20.250866] page_fault+0x1e/0x30 [ 20.250872] RIP: 0033:0x7962fdea9304 [ 20.250875] Code: 0f 11 4c 17 f0 c3 48 3b 15 f1 26 31 00 0f 83 e2 00 00 00 48 39 f7 72 0f 74 12 4c 8d 0c 16 4c 39 cf 0f 82 63 01 00 00 48 89 d1 <f3> a4 c3 80 fa 08 73 12 80 fa 04 73 1e 80 fa 01 77 26 72 05 0f b6 [ 20.250879] RSP: 002b:00007962f4db5468 EFLAGS: 00010206 [ 20.250883] RAX: 00003c8cc9d47008 RBX: 0000000000000000 RCX: 0000000000001b48 [ 20.250886] RDX: 0000000000002b40 RSI: 00003c8cc9551000 RDI: 00003c8cc9d48000 [ 20.250890] RBP: 00007962f4db5820 R08: 0000000000000000 R09: 00003c8cc9552b48 [ 20.250893] R10: 0000562dd1064d30 R11: 00003c8cc825b908 R12: 00003c8cc966d3c0 [ 20.250896] R13: 00003c8cc9e280c0 R14: 0000000000000000 R15: 0000000000000000 Signed-off-by:
Alex Levin <levinale@chromium.org> Signed-off-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
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Ranjani Sridharan authored
[ Upstream commit 495f926c ] Move the client_mutex lock to snd_soc_unbind_card() before removing link components. This prevents the deadlock in the error path in snd_soc_instantiate_card(). Fixes: 34ac3c3e (ASoC: core: lock client_mutex while removing link components) Reported-by:
kernelci.org bot <bot@kernelci.org> Signed-off-by:
Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by:
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Hans de Goede authored
[ Upstream commit 652b8b08 ] GPD has done it again, make a nice device (good), use way too generic DMI strings (bad) and use a portrait screen rotated 90 degrees (ugly). Because of the too generic DMI strings this entry is also doing bios-date matching, so the gpd_micropc data struct may very well need to be updated with some extra bios-dates in the future. Acked-by:
Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by:
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Hans de Goede authored
[ Upstream commit 15abc711 ] GPD has done it again, make a nice device (good), use way too generic DMI strings (bad) and use a portrait screen rotated 90 degrees (ugly). Because of the too generic DMI strings this entry is also doing bios-date matching, so the gpd_pocket2 data struct may very well need to be updated with some extra bios-dates in the future. Changes in v2: -Add one more known BIOS date to the list of BIOS dates Cc: Jurgen Kramer <gtmkramer@xs4all.nl> Reported-by:
Jurgen Kramer <gtmkramer@xs4all.nl> Acked-by:
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H. Nikolaus Schaller authored
[ Upstream commit 3b00691c ] 24 bit expanders use REG_ADDR_AI in combination with register addressing. This conflicts with regmap which takes this bit as part of the register number, i.e. a second cache entry is defined for accessed with REG_ADDR_AI being set although on the chip it is the same register as with REG_ADDR_AI being cleared. The problem was introduced by commit b32cecb4 ("gpio: pca953x: Extract the register address mangling to single function") but only became visible by commit 8b9f9d4d ("regmap: verify if register is writeable before writing operations") because before, the regmap size was effectively ignored and pca953x_writeable_register() did know to ignore REG_ADDR_AI. Still, there were two separate cache entries created. Since the use of REG_ADDR_AI seems to be static we can work around this issue by simply increasing the size of the regmap to cover the "virtual" registers with REG_ADDR_AI being set. This only means that half of the regmap buffer will be unused. Reported-by:
H. Nikolaus Schaller <hns@goldelico.com> Suggested-by:
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Don Brace authored
[ Upstream commit 625d7d35 ] - set ioaccel2_sg_element member 'chain_indicator' to IOACCEL2_LAST_SG for the last s/g element. - set ioaccel2_sg_element member 'chain_indicator' to IOACCEL2_CHAIN when chaining. Reviewed-by:
Bader Ali - Saleh <bader.alisaleh@microsemi.com> Reviewed-by:
Scott Teel <scott.teel@microsemi.com> Reviewed-by:
Matt Perricone <matt.perricone@microsemi.com> Signed-off-by:
Don Brace <don.brace@microsemi.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
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