[ 64.460341][ T27] audit: type=1800 audit(1584020711.115:26): pid=8386 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 64.511868][ T27] audit: type=1800 audit(1584020711.115:27): pid=8386 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 64.546448][ T27] audit: type=1800 audit(1584020711.115:28): pid=8386 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. [ 65.184209][ T27] audit: type=1800 audit(1584020711.875:29): pid=8386 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.182' (ECDSA) to the list of known hosts. 2020/03/12 13:45:23 fuzzer started 2020/03/12 13:45:24 connecting to host at 10.128.0.26:35797 2020/03/12 13:45:24 checking machine... 2020/03/12 13:45:24 checking revisions... 2020/03/12 13:45:24 testing simple program... syzkaller login: [ 78.329850][ T8554] IPVS: ftp: loaded support on port[0] = 21 2020/03/12 13:45:25 building call list... [ 78.701565][ T248] tipc: TX() has been purged, node left! [ 79.570786][ T8559] ------------[ cut here ]------------ [ 79.576522][ T8559] WARNING: CPU: 0 PID: 8559 at sound/core/oss/pcm_plugin.c:126 snd_pcm_plug_alloc+0x29a/0x330 [ 79.586733][ T8559] Kernel panic - not syncing: panic_on_warn set ... [ 79.593302][ T8559] CPU: 0 PID: 8559 Comm: syz-fuzzer Not tainted 5.6.0-rc5-next-20200312-syzkaller #0 [ 79.602740][ T8559] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.612787][ T8559] Call Trace: [ 79.616064][ T8559] dump_stack+0x188/0x20d [ 79.620386][ T8559] ? snd_pcm_plug_alloc+0x290/0x330 [ 79.625587][ T8559] panic+0x2e3/0x75c [ 79.629485][ T8559] ? add_taint.cold+0x16/0x16 [ 79.634145][ T8559] ? printk+0xba/0xed [ 79.638109][ T8559] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 79.643563][ T8559] ? __warn.cold+0x14/0x35 [ 79.647978][ T8559] ? __warn+0xd5/0x1c8 [ 79.652034][ T8559] ? snd_pcm_plug_alloc+0x29a/0x330 [ 79.657226][ T8559] __warn.cold+0x2f/0x35 [ 79.661457][ T8559] ? snd_pcm_plug_alloc+0x29a/0x330 [ 79.666636][ T8559] report_bug+0x27b/0x2f0 [ 79.670944][ T8559] do_error_trap+0x12b/0x220 [ 79.675528][ T8559] ? snd_pcm_plug_alloc+0x29a/0x330 [ 79.680715][ T8559] do_invalid_op+0x32/0x40 [ 79.685134][ T8559] ? snd_pcm_plug_alloc+0x29a/0x330 [ 79.690328][ T8559] invalid_op+0x23/0x30 [ 79.694475][ T8559] RIP: 0010:snd_pcm_plug_alloc+0x29a/0x330 [ 79.700276][ T8559] 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 [ 79.719873][ T8559] RSP: 0018:ffffc90002317b88 EFLAGS: 00010293 [ 79.725917][ T8559] RAX: ffff888093a7c200 RBX: ffff8880a4086000 RCX: ffffffff85f37886 [ 79.733868][ T8559] RDX: 0000000000000000 RSI: ffffffff85f37a0a RDI: 0000000000000007 [ 79.741818][ T8559] RBP: 0000000000000000 R08: ffff888093a7c200 R09: ffffed10132a791f [ 79.749778][ T8559] R10: ffff88809953c8f3 R11: ffffed10132a791e R12: ffff8880a4086058 [ 79.757739][ T8559] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88809953c800 [ 79.765709][ T8559] ? snd_pcm_plug_alloc+0x116/0x330 [ 79.770973][ T8559] ? snd_pcm_plug_alloc+0x29a/0x330 [ 79.776152][ T8559] ? snd_pcm_plug_alloc+0x29a/0x330 [ 79.781353][ T8559] snd_pcm_oss_change_params_locked+0x1c05/0x34b0 [ 79.787762][ T8559] ? _snd_pcm_hw_param_set.constprop.0+0x510/0x510 [ 79.794251][ T8559] ? trace_hardirqs_off+0x50/0x220 [ 79.799440][ T8559] ? trace_hardirqs_on+0x55/0x220 [ 79.804459][ T8559] ? snd_pcm_oss_sync.isra.0+0x7d0/0x7d0 [ 79.810684][ T8559] snd_pcm_oss_change_params+0x76/0xd0 [ 79.817626][ T8559] snd_pcm_oss_make_ready+0xb7/0x170 [ 79.822922][ T8559] snd_pcm_oss_sync.isra.0+0x1be/0x7d0 [ 79.828384][ T8559] ? snd_pcm_oss_sync.isra.0+0x7d0/0x7d0 [ 79.834016][ T8559] snd_pcm_oss_release+0x210/0x280 [ 79.839117][ T8559] __fput+0x2da/0x850 [ 79.843093][ T8559] task_work_run+0xf4/0x1b0 [ 79.847604][ T8559] exit_to_usermode_loop+0x2fa/0x360 [ 79.852890][ T8559] do_syscall_64+0x6b1/0x7d0 [ 79.857475][ T8559] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.863345][ T8559] RIP: 0033:0x4afb40 [ 79.867231][ T8559] 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 [ 79.887600][ T8559] RSP: 002b:000000c000213588 EFLAGS: 00000212 ORIG_RAX: 0000000000000003 [ 79.895993][ T8559] RAX: 0000000000000000 RBX: 000000c00002c000 RCX: 00000000004afb40 [ 79.903944][ T8559] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 79.912018][ T8559] RBP: 000000c0002135c8 R08: 0000000000000000 R09: 0000000000000000 [ 79.919971][ T8559] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000006 [ 79.931061][ T8559] R13: 0000000000000005 R14: 0000000000000200 R15: 0000000000000000 [ 79.940184][ T8559] Kernel Offset: disabled [ 79.944509][ T8559] Rebooting in 86400 seconds..