[ 60.778354][ T26] audit: type=1800 audit(1584020700.455:27): pid=8281 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 60.799108][ T26] audit: type=1800 audit(1584020700.465:28): pid=8281 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[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 61.504933][ T26] audit: type=1800 audit(1584020701.245:29): pid=8281 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 [ 61.538514][ T26] audit: type=1800 audit(1584020701.245:30): pid=8281 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 '10.128.1.17' (ECDSA) to the list of known hosts. 2020/03/12 13:45:10 fuzzer started 2020/03/12 13:45:12 connecting to host at 10.128.0.26:39929 2020/03/12 13:45:12 checking machine... 2020/03/12 13:45:12 checking revisions... 2020/03/12 13:45:12 testing simple program... syzkaller login: [ 72.695118][ T8450] IPVS: ftp: loaded support on port[0] = 21 2020/03/12 13:45:12 building call list... [ 72.990108][ T21] tipc: TX() has been purged, node left! [ 73.904177][ T8433] ------------[ cut here ]------------ [ 73.909780][ T8433] WARNING: CPU: 0 PID: 8433 at sound/core/oss/pcm_plugin.c:126 snd_pcm_plug_alloc+0x29a/0x330 [ 73.919991][ T8433] Kernel panic - not syncing: panic_on_warn set ... [ 73.926566][ T8433] CPU: 0 PID: 8433 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200312-syzkaller #0 [ 73.935995][ T8433] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.946031][ T8433] Call Trace: [ 73.949348][ T8433] dump_stack+0x188/0x20d [ 73.953661][ T8433] ? snd_pcm_plug_alloc+0x290/0x330 [ 73.958883][ T8433] panic+0x2e3/0x75c [ 73.962759][ T8433] ? add_taint.cold+0x16/0x16 [ 73.967415][ T8433] ? printk+0xba/0xed [ 73.971374][ T8433] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 73.976809][ T8433] ? __warn.cold+0x14/0x35 [ 73.981201][ T8433] ? __warn+0xd5/0x1c8 [ 73.985248][ T8433] ? snd_pcm_plug_alloc+0x29a/0x330 [ 73.990421][ T8433] __warn.cold+0x2f/0x35 [ 73.994641][ T8433] ? snd_pcm_plug_alloc+0x29a/0x330 [ 73.999813][ T8433] report_bug+0x27b/0x2f0 [ 74.004120][ T8433] do_error_trap+0x12b/0x220 [ 74.008681][ T8433] ? snd_pcm_plug_alloc+0x29a/0x330 [ 74.013864][ T8433] do_invalid_op+0x32/0x40 [ 74.018256][ T8433] ? snd_pcm_plug_alloc+0x29a/0x330 [ 74.023455][ T8433] invalid_op+0x23/0x30 [ 74.027588][ T8433] RIP: 0010:snd_pcm_plug_alloc+0x29a/0x330 [ 74.033371][ T8433] 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 [ 74.053384][ T8433] RSP: 0018:ffffc90001d97b88 EFLAGS: 00010293 [ 74.059425][ T8433] RAX: ffff8880978ac540 RBX: ffff8880a8b30c00 RCX: ffffffff85f37886 [ 74.067401][ T8433] RDX: 0000000000000000 RSI: ffffffff85f37a0a RDI: 0000000000000007 [ 74.075346][ T8433] RBP: 0000000000000000 R08: ffff8880978ac540 R09: ffffed1042a1cb1f [ 74.083292][ T8433] R10: ffff8882150e58f3 R11: ffffed1042a1cb1e R12: ffff8880a8b30c58 [ 74.091239][ T8433] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8882150e5800 [ 74.099206][ T8433] ? snd_pcm_plug_alloc+0x116/0x330 [ 74.105089][ T8433] ? snd_pcm_plug_alloc+0x29a/0x330 [ 74.110279][ T8433] ? snd_pcm_plug_alloc+0x29a/0x330 [ 74.115466][ T8433] snd_pcm_oss_change_params_locked+0x1c05/0x34b0 [ 74.121861][ T8433] ? _snd_pcm_hw_param_set.constprop.0+0x510/0x510 [ 74.128347][ T8433] ? trace_hardirqs_off+0x50/0x220 [ 74.133437][ T8433] ? trace_hardirqs_on+0x55/0x220 [ 74.138439][ T8433] ? snd_pcm_oss_sync.isra.0+0x7d0/0x7d0 [ 74.144057][ T8433] snd_pcm_oss_change_params+0x76/0xd0 [ 74.149501][ T8433] snd_pcm_oss_make_ready+0xb7/0x170 [ 74.154764][ T8433] snd_pcm_oss_sync.isra.0+0x1be/0x7d0 [ 74.160207][ T8433] ? snd_pcm_oss_sync.isra.0+0x7d0/0x7d0 [ 74.165811][ T8433] snd_pcm_oss_release+0x210/0x280 [ 74.170912][ T8433] __fput+0x2da/0x850 [ 74.174886][ T8433] task_work_run+0xf4/0x1b0 [ 74.179366][ T8433] exit_to_usermode_loop+0x2fa/0x360 [ 74.184641][ T8433] do_syscall_64+0x6b1/0x7d0 [ 74.189213][ T8433] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 74.195109][ T8433] RIP: 0033:0x4afb40 [ 74.198992][ T8433] 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 [ 74.218834][ T8433] RSP: 002b:000000c0001db588 EFLAGS: 00000212 ORIG_RAX: 0000000000000003 [ 74.227408][ T8433] RAX: 0000000000000000 RBX: 000000c00002e500 RCX: 00000000004afb40 [ 74.235354][ T8433] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 74.243320][ T8433] RBP: 000000c0001db5c8 R08: 0000000000000000 R09: 0000000000000000 [ 74.251287][ T8433] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000005 [ 74.259272][ T8433] R13: 0000000000000004 R14: 0000000000000200 R15: 0000000000000000 [ 74.268636][ T8433] Kernel Offset: disabled [ 74.272968][ T8433] Rebooting in 86400 seconds..