device ip6gre0 entered promiscuous mode
watchdog: BUG: soft lockup - CPU#0 stuck for 134s! [syz-executor4:6696]
Modules linked in:
irq event stamp: 2685836
hardirqs last  enabled at (2685835): [<00000000e37cdfcf>] snd_pcm_stream_unlock_irq+0x78/0xe0 sound/core/pcm_native.c:166
hardirqs last disabled at (2685836): [<00000000bcb8fa5d>] apic_timer_interrupt+0xa4/0xb0 arch/x86/entry/entry_64.S:920
softirqs last  enabled at (43308): [<0000000061d81dba>] __do_softirq+0x637/0x99f kernel/softirq.c:311
softirqs last disabled at (43243): [<00000000feba46f9>] invoke_softirq kernel/softirq.c:365 [inline]
softirqs last disabled at (43243): [<00000000feba46f9>] irq_exit+0x1cc/0x200 kernel/softirq.c:405
CPU: 0 PID: 6696 Comm: syz-executor4 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:__read_once_size include/linux/compiler.h:188 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x3b/0x50 kernel/kcov.c:106
RSP: 0018:ffff8801bc587938 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff11
RAX: 0000000000010000 RBX: ffffc900013a079c RCX: ffffffff83b7e044
RDX: 000000000000ffff RSI: ffffc90001ff6000 RDI: ffffc9000139df38
RBP: ffff8801bc587938 R08: fffff52000273be7 R09: fffff52000273be7
R10: 0000000000000001 R11: fffff52000273be6 R12: 00000000ffff8284
R13: ffffc9000139df38 R14: ffff8801d4bfa500 R15: dffffc0000000000
FS:  00007ff7a7d78700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020f32000 CR3: 00000001c4c89005 CR4: 00000000001626f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 cvt_s16_to_native sound/core/oss/mulaw.c:162 [inline]
 mulaw_decode+0x434/0x740 sound/core/oss/mulaw.c:195
 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:00007ff7a7d77c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071c010 RCX: 0000000000452ac9
RDX: 00000000fffffee4 RSI: 0000000020735ee0 RDI: 0000000000000017
RBP: 000000000000028d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f1dd8
R13: 00000000ffffffff R14: 00007ff7a7d786d4 R15: 0000000000000002
Code: 0c de a3 7e 81 e2 00 01 1f 00 48 8b 4d 08 75 2b 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 
Kernel panic - not syncing: softlockup: hung tasks
CPU: 0 PID: 6696 Comm: syz-executor4 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:__read_once_size include/linux/compiler.h:188 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x3b/0x50 kernel/kcov.c:106
RSP: 0018:ffff8801bc587938 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff11
RAX: 0000000000010000 RBX: ffffc900013a079c RCX: ffffffff83b7e044
RDX: 000000000000ffff RSI: ffffc90001ff6000 RDI: ffffc9000139df38
RBP: ffff8801bc587938 R08: fffff52000273be7 R09: fffff52000273be7
R10: 0000000000000001 R11: fffff52000273be6 R12: 00000000ffff8284
R13: ffffc9000139df38 R14: ffff8801d4bfa500 R15: dffffc0000000000
 cvt_s16_to_native sound/core/oss/mulaw.c:162 [inline]
 mulaw_decode+0x434/0x740 sound/core/oss/mulaw.c:195
 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:00007ff7a7d77c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000071c010 RCX: 0000000000452ac9
RDX: 00000000fffffee4 RSI: 0000000020735ee0 RDI: 0000000000000017
RBP: 000000000000028d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f1dd8
R13: 00000000ffffffff R14: 00007ff7a7d786d4 R15: 0000000000000002
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..