watchdog: BUG: soft lockup - CPU#1 stuck for 134s! [syz-executor1:5648]
Modules linked in:
irq event stamp: 2673330
hardirqs last  enabled at (2673329): [<0000000001a38a46>] snd_pcm_stream_unlock_irq+0x78/0xe0 sound/core/pcm_native.c:166
hardirqs last disabled at (2673330): [<0000000034210df5>] apic_timer_interrupt+0xa4/0xb0 arch/x86/entry/entry_64.S:920
softirqs last  enabled at (36218): [<000000004fb4c5b7>] __do_softirq+0x637/0x99f kernel/softirq.c:311
softirqs last disabled at (36123): [<00000000f8964c4c>] invoke_softirq kernel/softirq.c:365 [inline]
softirqs last disabled at (36123): [<00000000f8964c4c>] irq_exit+0x1cc/0x200 kernel/softirq.c:405
CPU: 1 PID: 5648 Comm: syz-executor1 Not tainted 4.15.0-rc6-next-20180105+ #89
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:cvt_s16_to_native sound/core/oss/mulaw.c:161 [inline]
RIP: 0010:mulaw_decode+0x42f/0x740 sound/core/oss/mulaw.c:195
RSP: 0018:ffff8801c1a67948 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff11
RAX: 0000000000000000 RBX: ffffc9000133ec88 RCX: ffffffff83b7dfe2
RDX: 0000000000010000 RSI: ffffc90003acb000 RDI: ffffc9000133c910
RBP: ffff8801c1a67a68 R08: fffff52000267922 R09: fffff52000267922
R10: 0000000000000001 R11: fffff52000267921 R12: 00000000ffff8284
R13: ffffc9000133c910 R14: ffff8801c0891b00 R15: dffffc0000000000
FS:  00007fd5ef062700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc65dbaf88 CR3: 00000001c1d25005 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+0x22c/0x390 sound/core/oss/pcm_plugin.c:619
 snd_pcm_oss_write2+0x22e/0x3c0 sound/core/oss/pcm_oss.c:1310
 snd_pcm_oss_write1 sound/core/oss/pcm_oss.c:1371 [inline]
 snd_pcm_oss_write+0x4c1/0x690 sound/core/oss/pcm_oss.c:2645
 __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:00007fd5ef061c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071c180 RCX: 0000000000452ac9
RDX: 00000000fffffee4 RSI: 0000000020735ee0 RDI: 000000000000001c
RBP: 0000000000000476 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4bb0
R13: 00000000ffffffff R14: 00007fd5ef0626d4 R15: 000000000000000a
Code: 42 0f b6 04 38 84 c0 74 08 3c 03 0f 8e 75 02 00 00 41 8b 86 a0 00 00 00 85 c0 74 0f 66 41 c1 c4 08 e8 f6 2e a6 fd 66 44 89 65 98 <e8> ec 2e a6 fd 48 8b 85 38 ff ff ff 48 c1 e8 03 42 0f b6 04 38 
Kernel panic - not syncing: softlockup: hung tasks
CPU: 1 PID: 5648 Comm: syz-executor1 Tainted: G             L   4.15.0-rc6-next-20180105+ #89
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:cvt_s16_to_native sound/core/oss/mulaw.c:161 [inline]
RIP: 0010:mulaw_decode+0x42f/0x740 sound/core/oss/mulaw.c:195
RSP: 0018:ffff8801c1a67948 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff11
RAX: 0000000000000000 RBX: ffffc9000133ec88 RCX: ffffffff83b7dfe2
RDX: 0000000000010000 RSI: ffffc90003acb000 RDI: ffffc9000133c910
RBP: ffff8801c1a67a68 R08: fffff52000267922 R09: fffff52000267922
R10: 0000000000000001 R11: fffff52000267921 R12: 00000000ffff8284
R13: ffffc9000133c910 R14: ffff8801c0891b00 R15: dffffc0000000000
 mulaw_transfer+0x222/0x270 sound/core/oss/mulaw.c:273
 snd_pcm_plug_write_transfer+0x22c/0x390 sound/core/oss/pcm_plugin.c:619
 snd_pcm_oss_write2+0x22e/0x3c0 sound/core/oss/pcm_oss.c:1310
 snd_pcm_oss_write1 sound/core/oss/pcm_oss.c:1371 [inline]
 snd_pcm_oss_write+0x4c1/0x690 sound/core/oss/pcm_oss.c:2645
 __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:00007fd5ef061c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071c180 RCX: 0000000000452ac9
RDX: 00000000fffffee4 RSI: 0000000020735ee0 RDI: 000000000000001c
RBP: 0000000000000476 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4bb0
R13: 00000000ffffffff R14: 00007fd5ef0626d4 R15: 000000000000000a
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..