watchdog: BUG: soft lockup - CPU#0 stuck for 134s! [syz-executor7:9903]
Modules linked in:
irq event stamp: 2689438
hardirqs last  enabled at (2689437): [<00000000d5b03e1b>] snd_pcm_stream_unlock_irq+0x78/0xe0 sound/core/pcm_native.c:166
hardirqs last disabled at (2689438): [<000000004f800a94>] apic_timer_interrupt+0xa4/0xb0 arch/x86/entry/entry_64.S:920
softirqs last  enabled at (1009210): [<0000000013f10404>] __do_softirq+0x637/0x99f kernel/softirq.c:311
softirqs last disabled at (1009125): [<00000000abf5a720>] invoke_softirq kernel/softirq.c:365 [inline]
softirqs last disabled at (1009125): [<00000000abf5a720>] irq_exit+0x1cc/0x200 kernel/softirq.c:405
CPU: 0 PID: 9903 Comm: syz-executor7 Not tainted 4.15.0-rc6-mm1+ #50
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x50 kernel/kcov.c:94
RSP: 0018:ffff8801d47ff938 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff11
RAX: ffff8801c36b4380 RBX: ffffc900013453ee RCX: ffffffff83b7d184
RDX: 0000000000000002 RSI: ffffc90002287000 RDI: ffffc900013427dc
RBP: ffff8801d47ff938 R08: fffff520002684fc R09: fffff520002684fc
R10: 0000000000000001 R11: fffff520002684fb R12: 0000000000000002
R13: ffffc900013427dc R14: ffff8801d62f6f00 R15: dffffc0000000000
FS:  00007fd12ee7b700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000013f8cd8 CR3: 00000001d44ea002 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 cvt_s16_to_native sound/core/oss/mulaw.c:164 [inline]
 mulaw_decode+0x4aa/0x740 sound/core/oss/mulaw.c:195
 mulaw_transfer+0x222/0x270 sound/core/oss/mulaw.c:273
 snd_pcm_plug_write_transfer+0x20b/0x390 sound/core/oss/pcm_plugin.c:611
 snd_pcm_oss_write2+0x22e/0x3c0 sound/core/oss/pcm_oss.c:1311
 snd_pcm_oss_write1 sound/core/oss/pcm_oss.c:1372 [inline]
 snd_pcm_oss_write+0x4c1/0x690 sound/core/oss/pcm_oss.c:2646
 __vfs_write+0xef/0x740 fs/read_write.c:480
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xd4/0x1a0 fs/read_write.c:581
 entry_SYSCALL_64_fastpath+0x23/0x9a
RIP: 0033:0x452ac9
RSP: 002b:00007fd12ee7ac58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071c0c8 RCX: 0000000000452ac9
RDX: 00000000fffffee4 RSI: 0000000020735ee0 RDI: 000000000000001a
RBP: 00000000000005c5 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f6b18
R13: 00000000ffffffff R14: 00007fd12ee7b6d4 R15: 0000000000000004
Code: 2b 00 e9 7d fe ff ff 4c 89 e7 e8 6f e7 2b 00 e9 3a fe ff ff 90 90 90 90 90 90 90 90 90 90 55 65 48 8b 04 25 c0 bd 01 00 48 89 e5 <65> 8b 15 7c ad a3 7e 81 e2 00 01 1f 00 48 8b 4d 08 75 2b 8b 90 
Kernel panic - not syncing: softlockup: hung tasks
CPU: 0 PID: 9903 Comm: syz-executor7 Tainted: G             L   4.15.0-rc6-mm1+ #50
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x137/0x198 lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 watchdog_timer_fn+0x314/0x320 kernel/watchdog.c:443
 __run_hrtimer kernel/time/hrtimer.c:1210 [inline]
 __hrtimer_run_queues+0x2c8/0xb50 kernel/time/hrtimer.c:1274
 hrtimer_interrupt+0x1c2/0x5e0 kernel/time/hrtimer.c:1308
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]
 smp_apic_timer_interrupt+0xc9/0x4c0 arch/x86/kernel/apic/apic.c:1050
 apic_timer_interrupt+0xa9/0xb0 arch/x86/entry/entry_64.S:920
 </IRQ>
RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x50 kernel/kcov.c:94
RSP: 0018:ffff8801d47ff938 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff11
RAX: ffff8801c36b4380 RBX: ffffc900013453ee RCX: ffffffff83b7d184
RDX: 0000000000000002 RSI: ffffc90002287000 RDI: ffffc900013427dc
RBP: ffff8801d47ff938 R08: fffff520002684fc R09: fffff520002684fc
R10: 0000000000000001 R11: fffff520002684fb R12: 0000000000000002
R13: ffffc900013427dc R14: ffff8801d62f6f00 R15: dffffc0000000000
 cvt_s16_to_native sound/core/oss/mulaw.c:164 [inline]
 mulaw_decode+0x4aa/0x740 sound/core/oss/mulaw.c:195
 mulaw_transfer+0x222/0x270 sound/core/oss/mulaw.c:273
 snd_pcm_plug_write_transfer+0x20b/0x390 sound/core/oss/pcm_plugin.c:611
 snd_pcm_oss_write2+0x22e/0x3c0 sound/core/oss/pcm_oss.c:1311
 snd_pcm_oss_write1 sound/core/oss/pcm_oss.c:1372 [inline]
 snd_pcm_oss_write+0x4c1/0x690 sound/core/oss/pcm_oss.c:2646
 __vfs_write+0xef/0x740 fs/read_write.c:480
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xd4/0x1a0 fs/read_write.c:581
 entry_SYSCALL_64_fastpath+0x23/0x9a
RIP: 0033:0x452ac9
RSP: 002b:00007fd12ee7ac58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071c0c8 RCX: 0000000000452ac9
RDX: 00000000fffffee4 RSI: 0000000020735ee0 RDI: 000000000000001a
RBP: 00000000000005c5 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f6b18
R13: 00000000ffffffff R14: 00007fd12ee7b6d4 R15: 0000000000000004
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..