[ 56.808234][ T27] audit: type=1800 audit(1584020696.729:27): pid=8412 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 56.851992][ T27] audit: type=1800 audit(1584020696.729:28): pid=8412 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [ 57.461560][ T27] audit: type=1800 audit(1584020697.469:29): pid=8412 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 57.495971][ T27] audit: type=1800 audit(1584020697.469:30): pid=8412 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.219' (ECDSA) to the list of known hosts. 2020/03/12 13:45:07 fuzzer started 2020/03/12 13:45:09 connecting to host at 10.128.0.26:34345 2020/03/12 13:45:09 checking machine... 2020/03/12 13:45:09 checking revisions... 2020/03/12 13:45:09 testing simple program... syzkaller login: [ 69.282188][ T8580] IPVS: ftp: loaded support on port[0] = 21 2020/03/12 13:45:09 building call list... [ 69.648086][ T208] tipc: TX() has been purged, node left! [ 70.582362][ T8564] ------------[ cut here ]------------ [ 70.588947][ T8564] WARNING: CPU: 1 PID: 8564 at sound/core/oss/pcm_plugin.c:126 snd_pcm_plug_alloc+0x29a/0x330 [ 70.600160][ T8564] Kernel panic - not syncing: panic_on_warn set ... [ 70.607353][ T8564] CPU: 1 PID: 8564 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200312-syzkaller #0 [ 70.617257][ T8564] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.629335][ T8564] Call Trace: [ 70.632628][ T8564] dump_stack+0x188/0x20d [ 70.638626][ T8564] ? snd_pcm_plug_alloc+0x290/0x330 [ 70.645328][ T8564] panic+0x2e3/0x75c [ 70.649627][ T8564] ? add_taint.cold+0x16/0x16 [ 70.654398][ T8564] ? printk+0xba/0xed [ 70.658381][ T8564] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 70.664602][ T8564] ? __warn.cold+0x14/0x35 [ 70.669191][ T8564] ? __warn+0xd5/0x1c8 [ 70.673423][ T8564] ? snd_pcm_plug_alloc+0x29a/0x330 [ 70.678932][ T8564] __warn.cold+0x2f/0x35 [ 70.683509][ T8564] ? snd_pcm_plug_alloc+0x29a/0x330 [ 70.689031][ T8564] report_bug+0x27b/0x2f0 [ 70.693661][ T8564] do_error_trap+0x12b/0x220 [ 70.699007][ T8564] ? snd_pcm_plug_alloc+0x29a/0x330 [ 70.704724][ T8564] do_invalid_op+0x32/0x40 [ 70.709142][ T8564] ? snd_pcm_plug_alloc+0x29a/0x330 [ 70.714629][ T8564] invalid_op+0x23/0x30 [ 70.718981][ T8564] RIP: 0010:snd_pcm_plug_alloc+0x29a/0x330 [ 70.724918][ T8564] Code: ff ff 45 31 e4 e8 d6 4d 7f fb 44 89 e0 5b 5d 41 5c 41 5d 41 5e c3 e8 c5 4d 7f fb 0f 0b 41 bc fa ff ff ff eb e0 e8 b6 4d 7f fb <0f> 0b 41 bc fa ff ff ff eb d1 e8 a7 4d 7f fb 0f 0b 41 bc fa ff ff [ 70.745182][ T8564] RSP: 0018:ffffc90002967b88 EFLAGS: 00010293 [ 70.751609][ T8564] RAX: ffff8880a7b36180 RBX: ffff8880a96e8c00 RCX: ffffffff85f37886 [ 70.760118][ T8564] RDX: 0000000000000000 RSI: ffffffff85f37a0a RDI: 0000000000000007 [ 70.768864][ T8564] RBP: 0000000000000000 R08: ffff8880a7b36180 R09: ffffed1042a1561f [ 70.777151][ T8564] R10: ffff8882150ab0f3 R11: ffffed1042a1561e R12: ffff8880a96e8c58 [ 70.785258][ T8564] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8882150ab000 [ 70.793241][ T8564] ? snd_pcm_plug_alloc+0x116/0x330 [ 70.798448][ T8564] ? snd_pcm_plug_alloc+0x29a/0x330 [ 70.803867][ T8564] ? snd_pcm_plug_alloc+0x29a/0x330 [ 70.809561][ T8564] snd_pcm_oss_change_params_locked+0x1c05/0x34b0 [ 70.816196][ T8564] ? _snd_pcm_hw_param_set.constprop.0+0x510/0x510 [ 70.822707][ T8564] ? trace_hardirqs_off+0x50/0x220 [ 70.828509][ T8564] ? trace_hardirqs_on+0x55/0x220 [ 70.833795][ T8564] ? snd_pcm_oss_sync.isra.0+0x7d0/0x7d0 [ 70.839441][ T8564] snd_pcm_oss_change_params+0x76/0xd0 [ 70.844936][ T8564] snd_pcm_oss_make_ready+0xb7/0x170 [ 70.850275][ T8564] snd_pcm_oss_sync.isra.0+0x1be/0x7d0 [ 70.855830][ T8564] ? snd_pcm_oss_sync.isra.0+0x7d0/0x7d0 [ 70.861589][ T8564] snd_pcm_oss_release+0x210/0x280 [ 70.867176][ T8564] __fput+0x2da/0x850 [ 70.871612][ T8564] task_work_run+0xf4/0x1b0 [ 70.876512][ T8564] exit_to_usermode_loop+0x2fa/0x360 [ 70.881914][ T8564] do_syscall_64+0x6b1/0x7d0 [ 70.886524][ T8564] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.892409][ T8564] RIP: 0033:0x4afb40 [ 70.896291][ T8564] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 70.916422][ T8564] RSP: 002b:000000c0001d7588 EFLAGS: 00000212 ORIG_RAX: 0000000000000003 [ 70.924831][ T8564] RAX: 0000000000000000 RBX: 000000c00002e500 RCX: 00000000004afb40 [ 70.933070][ T8564] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 70.941031][ T8564] RBP: 000000c0001d75c8 R08: 0000000000000000 R09: 0000000000000000 [ 70.949399][ T8564] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000006 [ 70.958020][ T8564] R13: 0000000000000005 R14: 0000000000000200 R15: ffffffffffffffff [ 70.968181][ T8564] Kernel Offset: disabled [ 70.972530][ T8564] Rebooting in 86400 seconds..