[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 66.208350][ T26] audit: type=1800 audit(1559674765.411:25): pid=8306 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 66.253905][ T26] audit: type=1800 audit(1559674765.411:26): pid=8306 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 66.295440][ T26] audit: type=1800 audit(1559674765.421:27): pid=8306 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.115' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 78.744387][ T9507] WARNING: CPU: 0 PID: 9507 at include/net/sock.h:666 smc_unhash_sk+0x1ea/0x260 [ 78.753541][ T9507] Kernel panic - not syncing: panic_on_warn set ... [ 78.760114][ T9507] CPU: 0 PID: 9507 Comm: syz-executor488 Not tainted 5.2.0-rc3+ #19 [ 78.768076][ T9507] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.778112][ T9507] Call Trace: [ 78.781388][ T9507] dump_stack+0x172/0x1f0 [ 78.785700][ T9507] ? smc_unhash_sk+0x160/0x260 [ 78.790448][ T9507] panic+0x2cb/0x744 [ 78.794329][ T9507] ? __warn_printk+0xf3/0xf3 [ 78.798906][ T9507] ? smc_unhash_sk+0x1ea/0x260 [ 78.803651][ T9507] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.809877][ T9507] ? __warn.cold+0x5/0x4d [ 78.814190][ T9507] ? __warn+0xe8/0x1d0 [ 78.818258][ T9507] ? smc_unhash_sk+0x1ea/0x260 [ 78.823029][ T9507] __warn.cold+0x20/0x4d [ 78.827261][ T9507] ? mark_held_locks+0xf0/0xf0 [ 78.832008][ T9507] ? smc_unhash_sk+0x1ea/0x260 [ 78.836757][ T9507] report_bug+0x263/0x2b0 [ 78.841091][ T9507] do_error_trap+0x11b/0x200 [ 78.845697][ T9507] do_invalid_op+0x37/0x50 [ 78.850103][ T9507] ? smc_unhash_sk+0x1ea/0x260 [ 78.854858][ T9507] invalid_op+0x14/0x20 [ 78.859388][ T9507] RIP: 0010:smc_unhash_sk+0x1ea/0x260 [ 78.864745][ T9507] Code: ff ff ff ff e8 27 7f 95 fe e8 42 04 8c fa 4c 89 ef e8 7a fa 37 00 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 26 04 8c fa <0f> 0b eb 86 4c 89 e7 e8 2a a2 c4 fa e9 5f ff ff ff e8 40 a2 c4 fa [ 78.884341][ T9507] RSP: 0018:ffff8880a8b07bd0 EFLAGS: 00010293 [ 78.890391][ T9507] RAX: ffff88808bcac0c0 RBX: ffff8880946af240 RCX: ffffffff86e4a20e [ 78.898349][ T9507] RDX: 0000000000000000 RSI: ffffffff86e4a28a RDI: 0000000000000005 [ 78.906309][ T9507] RBP: ffff8880a8b07c00 R08: ffff88808bcac0c0 R09: ffffed10128d5e59 [ 78.914276][ T9507] R10: ffffed10128d5e58 R11: ffff8880946af2c3 R12: ffff8880946af2c0 [ 78.922316][ T9507] R13: ffffffff89751d40 R14: ffff8880946af268 R15: 0000000000000001 [ 78.930287][ T9507] ? smc_unhash_sk+0x16e/0x260 [ 78.935041][ T9507] ? smc_unhash_sk+0x1ea/0x260 [ 78.939797][ T9507] smc_release+0x32c/0x7b0 [ 78.944202][ T9507] __sock_release+0xce/0x2a0 [ 78.948773][ T9507] sock_close+0x1b/0x30 [ 78.953001][ T9507] __fput+0x2ff/0x890 [ 78.956965][ T9507] ? __sock_release+0x2a0/0x2a0 [ 78.961812][ T9507] ____fput+0x16/0x20 [ 78.967183][ T9507] task_work_run+0x145/0x1c0 [ 78.971845][ T9507] do_exit+0x90a/0x2fa0 [ 78.976008][ T9507] ? mm_update_next_owner+0x640/0x640 [ 78.981363][ T9507] ? kasan_check_write+0x14/0x20 [ 78.986281][ T9507] ? up_read+0xc4/0x200 [ 78.990420][ T9507] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 78.995861][ T9507] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 79.001310][ T9507] do_group_exit+0x135/0x370 [ 79.005882][ T9507] __x64_sys_exit_group+0x44/0x50 [ 79.010892][ T9507] do_syscall_64+0xfd/0x680 [ 79.015376][ T9507] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.022795][ T9507] RIP: 0033:0x43fee8 [ 79.026680][ T9507] Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 [ 79.046262][ T9507] RSP: 002b:00007fffb4545b48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 79.054651][ T9507] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043fee8 [ 79.062604][ T9507] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 79.070561][ T9507] RBP: 00000000004bf710 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 79.078513][ T9507] R10: 0000000024040000 R11: 0000000000000246 R12: 0000000000000001 [ 79.086636][ T9507] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 [ 79.095914][ T9507] Kernel Offset: disabled [ 79.100405][ T9507] Rebooting in 86400 seconds..