watchdog: BUG: soft lockup - CPU#1 stuck for 134s! [syz-executor5:7449]
Modules linked in:
irq event stamp: 2705328
hardirqs last  enabled at (2705327): [<0000000027afa13e>] snd_pcm_stream_unlock_irq+0x78/0xe0 sound/core/pcm_native.c:166
hardirqs last disabled at (2705328): [<00000000300d5e53>] apic_timer_interrupt+0xa4/0xb0 arch/x86/entry/entry_64.S:920
softirqs last  enabled at (587378): [<000000009ffbd40a>] __do_softirq+0x637/0x99f kernel/softirq.c:311
softirqs last disabled at (587313): [<0000000022ae63f4>] invoke_softirq kernel/softirq.c:365 [inline]
softirqs last disabled at (587313): [<0000000022ae63f4>] irq_exit+0x1cc/0x200 kernel/softirq.c:405
CPU: 1 PID: 7449 Comm: syz-executor5 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+0x0/0x50
RSP: 0018:ffff8801d9847940 EFLAGS: 00000287 ORIG_RAX: ffffffffffffff11
RAX: 00000000ffff8284 RBX: ffffc900012a91d6 RCX: ffffffff83b7d2d9
RDX: 0000000000010000 RSI: ffffc90002b3f000 RDI: ffffc900012a63ac
RBP: ffff8801d9847a68 R08: fffff52000254c76 R09: fffff52000254c76
R10: 0000000000000001 R11: fffff52000254c75 R12: 00000000ffff8284
R13: ffffc900012a63ac R14: ffff8801cfaa0000 R15: dffffc0000000000
FS:  00007f721bcb2700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c430960110 CR3: 00000001caead004 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 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:00007f721bcb1c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452ac9
RDX: 00000000fffffee4 RSI: 0000000020735ee0 RDI: 0000000000000015
RBP: 00000000000003fa R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4010
R13: 00000000ffffffff R14: 00007f721bcb26d4 R15: 0000000000000004
Code: 4d d0 e9 a2 fe ff ff 4c 89 ff e8 7c e7 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 
Kernel panic - not syncing: softlockup: hung tasks
CPU: 1 PID: 7449 Comm: syz-executor5 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+0x0/0x50
RSP: 0018:ffff8801d9847940 EFLAGS: 00000287 ORIG_RAX: ffffffffffffff11
RAX: 00000000ffff8284 RBX: ffffc900012a91d6 RCX: ffffffff83b7d2d9
RDX: 0000000000010000 RSI: ffffc90002b3f000 RDI: ffffc900012a63ac
RBP: ffff8801d9847a68 R08: fffff52000254c76 R09: fffff52000254c76
R10: 0000000000000001 R11: fffff52000254c75 R12: 00000000ffff8284
R13: ffffc900012a63ac R14: ffff8801cfaa0000 R15: dffffc0000000000
 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:00007f721bcb1c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452ac9
RDX: 00000000fffffee4 RSI: 0000000020735ee0 RDI: 0000000000000015
RBP: 00000000000003fa R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4010
R13: 00000000ffffffff R14: 00007f721bcb26d4 R15: 0000000000000004
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..