watchdog: BUG: soft lockup - CPU#1 stuck for 134s! [syz-executor3:9999] watchdog: BUG: soft lockup - CPU#0 stuck for 134s! [syz-executor3:10014] Modules linked in: irq event stamp: 2912060 hardirqs last enabled at (2912059): [<00000000241314f7>] snd_pcm_stream_unlock_irq+0x78/0xe0 sound/core/pcm_native.c:166 hardirqs last disabled at (2912060): [<00000000932bb294>] apic_timer_interrupt+0xa4/0xb0 arch/x86/entry/entry_64.S:920 softirqs last enabled at (360666): [<00000000a9542e3d>] __do_softirq+0x637/0x99f kernel/softirq.c:311 softirqs last disabled at (360561): [<000000008cbec534>] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (360561): [<000000008cbec534>] irq_exit+0x1cc/0x200 kernel/softirq.c:405 CPU: 0 PID: 10014 Comm: syz-executor3 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:ffff8801a6f1f948 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff11 RAX: 0000000000000000 RBX: ffffc9000142806d RCX: ffffffff83b7dfe2 RDX: 0000000000010000 RSI: ffffc90002f9d000 RDI: ffffc900013650da RBP: ffff8801a6f1fa68 R08: fffff5200026ca1c R09: fffff5200026ca1c R10: 0000000000000001 R11: fffff5200026ca1b R12: 00000000ffff8284 R13: ffffc900013650da R14: ffff8801bc7db800 R15: dffffc0000000000 FS: 00007f4c23c8b700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4c23c48db8 CR3: 00000001c181e002 CR4: 00000000001606f0 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:00007f4c23c8ac58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452ac9 RDX: 00000000fffffee4 RSI: 0000000020735ee0 RDI: 0000000000000014 RBP: 000000000000034b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f2fa8 R13: 00000000ffffffff R14: 00007f4c23c8b6d4 R15: 0000000000000009 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 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: 0 PID: 10014 Comm: syz-executor3 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: __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 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:ffff8801a6f1f948 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff11 RAX: 0000000000000000 RBX: ffffc9000142806d RCX: ffffffff83b7dfe2 RDX: 0000000000010000 RSI: ffffc90002f9d000 RDI: ffffc900013650da RBP: ffff8801a6f1fa68 R08: fffff5200026ca1c R09: fffff5200026ca1c R10: 0000000000000001 R11: fffff5200026ca1b R12: 00000000ffff8284 R13: ffffc900013650da R14: ffff8801bc7db800 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:00007f4c23c8ac58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452ac9 RDX: 00000000fffffee4 RSI: 0000000020735ee0 RDI: 0000000000000014 RBP: 000000000000034b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f2fa8 R13: 00000000ffffffff R14: 00007f4c23c8b6d4 R15: 0000000000000009 Modules linked in: irq event stamp: 2883260 hardirqs last enabled at (2883259): [<00000000241314f7>] snd_pcm_stream_unlock_irq+0x78/0xe0 sound/core/pcm_native.c:166 hardirqs last disabled at (2883260): [<00000000932bb294>] apic_timer_interrupt+0xa4/0xb0 arch/x86/entry/entry_64.S:920 softirqs last enabled at (320042): [<00000000a9542e3d>] __do_softirq+0x637/0x99f kernel/softirq.c:311 softirqs last disabled at (319949): [<000000008cbec534>] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (319949): [<000000008cbec534>] irq_exit+0x1cc/0x200 kernel/softirq.c:405 CPU: 1 PID: 9999 Comm: syz-executor3 Tainted: G L 4.15.0-rc6-next-20180105+ #89 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:bytes_is_nonzero mm/kasan/kasan.c:166 [inline] RIP: 0010:memory_is_nonzero mm/kasan/kasan.c:197 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/kasan.c:210 [inline] RIP: 0010:memory_is_poisoned mm/kasan/kasan.c:241 [inline] RIP: 0010:check_memory_region_inline mm/kasan/kasan.c:257 [inline] RIP: 0010:check_memory_region+0x11d/0x190 mm/kasan/kasan.c:267 RSP: 0018:ffff8801c4b2f900 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff11 RAX: ffffed0038965f40 RBX: ffff8801c4b2fa01 RCX: ffffffff83b7e11e RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff8801c4b2fa00 RBP: ffff8801c4b2f910 R08: ffffed0038965f40 R09: ffffed0038965f40 R10: 0000000000000001 R11: ffffed0038965f40 R12: ffffed0038965f41 R13: ffff8801c4b2fa00 R14: ffff8801c33a2200 R15: dffffc0000000000 FS: 00007f4c23cac700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4c23c69db8 CR3: 00000001c181e005 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: memcpy+0x23/0x50 mm/kasan/kasan.c:302 memcpy include/linux/string.h:344 [inline] cvt_s16_to_native sound/core/oss/mulaw.c:164 [inline] mulaw_decode+0x50e/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:00007f4c23cabc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 00000000fffffee4 RSI: 0000000020735ee0 RDI: 0000000000000013 RBP: 00000000000003a3 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f37e8 R13: 00000000ffffffff R14: 00007f4c23cac6d4 R15: 0000000000000000 Code: 08 48 83 c0 08 49 39 c0 74 40 48 83 38 00 74 f1 4c 8d 40 08 80 38 00 0f 85 79 ff ff ff 48 83 c0 01 49 39 c0 75 ee e9 77 ff ff ff <4d> 39 c3 75 10 49 0f be 03 83 e3 07 48 39 c3 0f 8c 62 ff ff ff Shutting down cpus with NMI Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..