Hello,
syzbot found the following crash on:
HEAD commit: 37d4e84f Merge tag 'ceph-for-5.5-rc2' of git://github.com/..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10bbc9a6e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=79f79de2a27d3e3d
dashboard link: https://syzkaller.appspot.com/bug?extid=b3028ac3933f5c466389
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
userspace arch: i386
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+b3028ac3933f5c466389@xxxxxxxxxxxxxxxxxxxxxxxxx
snd_hda_intel 0000:00:06.0: No response from codec, disabling MSI: last
cmd=0x004a0000
------------[ cut here ]------------
snd_hda_intel 0000:00:06.0: azx_get_response timeout, switching to
single_cmd mode: last cmd=0x004a0000
WARNING: CPU: 2 PID: 8020 at sound/pci/hda/hda_controller.c:886
azx_rirb_get_response+0x5d6/0x720 sound/pci/hda/hda_controller.c:886
Kernel panic - not syncing: panic_on_warn set ...
CPU: 2 PID: 8020 Comm: syz-executor.1 Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS
rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x197/0x210 lib/dump_stack.c:118
panic+0x2e3/0x75c kernel/panic.c:221
__warn.cold+0x2f/0x3e kernel/panic.c:582
report_bug+0x289/0x300 lib/bug.c:195
fixup_bug arch/x86/kernel/traps.c:174 [inline]
fixup_bug arch/x86/kernel/traps.c:169 [inline]
do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286
invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:azx_rirb_get_response+0x5d6/0x720
sound/pci/hda/hda_controller.c:886
Code: f6 00 00 00 49 8b 5d 00 e8 27 75 7a fb 4c 89 ef e8 ef 21 5a fe 44 89
f9 48 89 da 48 c7 c7 80 07 ce 88 48 89 c6 e8 d9 1e 4b fb <0f> 0b 48 b8 00
00 00 00 00 fc ff df 48 8b 4d 88 48 89 ca 48 c1 ea
RSP: 0018:ffffc9000236f708 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff888078f64240 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815e88f6 RDI: fffff5200046ded3
RBP: ffffc9000236f780 R08: ffff8880673d0140 R09: ffffed1005a46621
R10: ffffed1005a46620 R11: ffff88802d233107 R12: ffff888029ef0000
R13: ffff88802759a0b0 R14: dffffc0000000000 R15: 00000000004a0000
azx_get_response sound/pci/hda/hda_controller.c:994 [inline]
azx_get_response+0x14c/0x180 sound/pci/hda/hda_controller.c:984
snd_hdac_bus_exec_verb_unlocked+0x4b5/0x950 sound/hda/hdac_bus.c:115
codec_exec_verb+0x13d/0x340 sound/pci/hda/hda_codec.c:52
snd_hdac_exec_verb+0x65/0x110 sound/hda/hdac_device.c:257
codec_read+0xa2/0x100 sound/hda/hdac_device.c:986
snd_hdac_codec_read+0x34/0x40 sound/hda/hdac_device.c:1015
snd_hda_codec_read include/sound/hda_codec.h:318 [inline]
update_pcm_format.part.0+0x36/0xc0 sound/pci/hda/hda_codec.c:1057
update_pcm_format sound/pci/hda/hda_codec.c:1056 [inline]
snd_hda_codec_setup_stream.part.0+0x355/0xa40
sound/pci/hda/hda_codec.c:1102
snd_hda_codec_setup_stream+0x47/0x60 sound/pci/hda/hda_codec.c:1086
capture_pcm_prepare+0x63/0x100 sound/pci/hda/hda_generic.c:5376
snd_hda_codec_prepare+0xa5/0x420 sound/pci/hda/hda_codec.c:3160
azx_pcm_prepare+0x53f/0x950 sound/pci/hda/hda_controller.c:195
snd_pcm_do_prepare+0x61/0xa0 sound/core/pcm_native.c:1729
snd_pcm_action_single+0x7a/0x130 sound/core/pcm_native.c:1111
snd_pcm_action_nonatomic+0x9c/0xb0 sound/core/pcm_native.c:1227
snd_pcm_prepare+0x121/0x1b0 sound/core/pcm_native.c:1776
snd_pcm_kernel_ioctl+0x117/0x1f0 sound/core/pcm_native.c:3068
snd_pcm_oss_prepare+0x49/0x150 sound/core/oss/pcm_oss.c:1125
snd_pcm_oss_make_ready+0x12b/0x170 sound/core/oss/pcm_oss.c:1153
snd_pcm_oss_sync.isra.0+0x1c4/0x7e0 sound/core/oss/pcm_oss.c:1707
snd_pcm_oss_release+0x214/0x290 sound/core/oss/pcm_oss.c:2545
__fput+0x2ff/0x890 fs/file_table.c:280
____fput+0x16/0x20 fs/file_table.c:313
task_work_run+0x145/0x1c0 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:188 [inline]
exit_to_usermode_loop+0x316/0x380 arch/x86/entry/common.c:164
prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
syscall_return_slowpath arch/x86/entry/common.c:278 [inline]
do_syscall_32_irqs_on arch/x86/entry/common.c:352 [inline]
do_fast_syscall_32+0xbbd/0xe16 arch/x86/entry/common.c:408
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7faea39
Code: 00 00 00 89 d3 5b 5e 5f 5d c3 b8 80 96 98 00 eb c4 8b 04 24 c3 8b 1c
24 c3 8b 34 24 c3 8b 3c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90
90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000ffadef9c EFLAGS: 00000293 ORIG_RAX: 0000000000000006
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000000000
RDX: 000000000812b000 RSI: 0000000000000005 RDI: 000000000815b660
RBP: 000000000815b660 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..
---
This bug is generated by a bot. It may contain errors.
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