watchdog: BUG: soft lockup - CPU#0 stuck for 134s! [syz-executor6:8773]
Modules linked in:
irq event stamp: 2941184
hardirqs last  enabled at (2941183): [<00000000211f85cd>] snd_pcm_stream_unlock_irq+0x78/0xe0 sound/core/pcm_native.c:166
hardirqs last disabled at (2941184): [<0000000083fa5077>] apic_timer_interrupt+0xa4/0xb0 arch/x86/entry/entry_64.S:920
softirqs last  enabled at (1588928): [<00000000a0ee80c2>] __do_softirq+0x637/0x99f kernel/softirq.c:311
softirqs last disabled at (1588919): [<000000006afda86e>] invoke_softirq kernel/softirq.c:365 [inline]
softirqs last disabled at (1588919): [<000000006afda86e>] irq_exit+0x1cc/0x200 kernel/softirq.c:405
CPU: 0 PID: 8773 Comm: syz-executor6 Not tainted 4.15.0-rc6-mm1+ #50
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__write_once_size include/linux/compiler.h:217 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4b/0x50 kernel/kcov.c:109
RSP: 0018:ffff8801bcf4f938 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff11
RAX: 0000000000010000 RBX: ffffc90001382b23 RCX: ffffffff83b7d122
RDX: 0000000000010000 RSI: ffffc90003f77000 RDI: ffffc90001380646
RBP: ffff8801bcf4f938 R08: fffff520002700c9 R09: fffff520002700c9
R10: 0000000000000001 R11: fffff520002700c8 R12: 00000000ffff8284
R13: ffffc90001380646 R14: ffff8801d5e9d700 R15: dffffc0000000000
FS:  00007f8ddb166700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002001d000 CR3: 00000001d8438003 CR4: 00000000001606f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 ulaw2linear sound/core/oss/mulaw.c:134 [inline]
 mulaw_decode+0x3d2/0x740 sound/core/oss/mulaw.c:194
 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:00007f8ddb165c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071c010 RCX: 0000000000452ac9
RDX: 00000000fffffee4 RSI: 0000000020735ee0 RDI: 0000000000000017
RBP: 00000000000003c3 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f3ae8
R13: 00000000ffffffff R14: 00007f8ddb1666d4 R15: 0000000000000002
Code: 8b 90 b8 12 00 00 83 fa 02 75 20 48 8b b0 c0 12 00 00 8b 80 bc 12 00 00 48 8b 16 48 83 c2 01 48 39 d0 76 07 48 89 0c d6 48 89 16 <5d> c3 0f 1f 00 55 65 48 8b 04 25 c0 bd 01 00 65 44 8b 05 2e ad 
Kernel panic - not syncing: softlockup: hung tasks
CPU: 0 PID: 8773 Comm: syz-executor6 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:__write_once_size include/linux/compiler.h:217 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4b/0x50 kernel/kcov.c:109
RSP: 0018:ffff8801bcf4f938 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff11
RAX: 0000000000010000 RBX: ffffc90001382b23 RCX: ffffffff83b7d122
RDX: 0000000000010000 RSI: ffffc90003f77000 RDI: ffffc90001380646
RBP: ffff8801bcf4f938 R08: fffff520002700c9 R09: fffff520002700c9
R10: 0000000000000001 R11: fffff520002700c8 R12: 00000000ffff8284
R13: ffffc90001380646 R14: ffff8801d5e9d700 R15: dffffc0000000000
 ulaw2linear sound/core/oss/mulaw.c:134 [inline]
 mulaw_decode+0x3d2/0x740 sound/core/oss/mulaw.c:194
 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:00007f8ddb165c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071c010 RCX: 0000000000452ac9
RDX: 00000000fffffee4 RSI: 0000000020735ee0 RDI: 0000000000000017
RBP: 00000000000003c3 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f3ae8
R13: 00000000ffffffff R14: 00007f8ddb1666d4 R15: 0000000000000002
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..