[ 44.220059] audit: type=1800 audit(1585262976.195:32): pid=7827 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 44.922596] audit: type=1800 audit(1585262976.995:33): pid=7827 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.201' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 53.703228] kauditd_printk_skb: 2 callbacks suppressed [ 53.703242] audit: type=1400 audit(1585262985.775:36): avc: denied { map } for pid=8013 comm="syz-executor360" path="/root/syz-executor360272398" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 53.713444] MINIX-fs: mounting unchecked file system, running fsck is recommended [ 53.750838] ------------[ cut here ]------------ [ 53.753920] audit: type=1400 audit(1585262985.825:37): avc: denied { associate } for pid=8013 comm="syz-executor360" name="file0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 53.756035] WARNING: CPU: 1 PID: 8013 at fs/inode.c:343 inc_nlink.cold+0x11/0x18 [ 53.785590] Kernel panic - not syncing: panic_on_warn set ... [ 53.785590] [ 53.792937] CPU: 1 PID: 8013 Comm: syz-executor360 Not tainted 4.19.113-syzkaller #0 [ 53.800822] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.810166] Call Trace: [ 53.812748] dump_stack+0x188/0x20d [ 53.816365] panic+0x26a/0x50e [ 53.819583] ? __warn_printk+0xf3/0xf3 [ 53.823465] ? inc_nlink.cold+0x11/0x18 [ 53.827423] ? __probe_kernel_read+0x16c/0x1b0 [ 53.831989] ? __warn.cold+0x5/0x46 [ 53.835601] ? __warn+0xe4/0x1c0 [ 53.838949] ? inc_nlink.cold+0x11/0x18 [ 53.842944] __warn.cold+0x20/0x46 [ 53.846499] ? inc_nlink.cold+0x11/0x18 [ 53.850458] report_bug+0x262/0x2a0 [ 53.854067] do_error_trap+0x1d7/0x310 [ 53.857967] ? math_error+0x310/0x310 [ 53.861751] ? __irq_work_queue_local+0x101/0x160 [ 53.866617] ? irq_work_queue+0x2b/0x80 [ 53.870621] ? wake_up_klogd+0x8c/0xc0 [ 53.874489] ? trace_hardirqs_off_caller+0x55/0x210 [ 53.879491] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 53.884318] invalid_op+0x14/0x20 [ 53.887751] RIP: 0010:inc_nlink.cold+0x11/0x18 [ 53.892316] Code: c5 b9 ff 44 89 e0 5b 5d 41 5c c3 e8 c0 90 ef ff eb c3 e8 c9 90 ef ff eb 8e e8 52 c5 b9 ff 48 c7 c7 40 cd 74 87 e8 5f e4 a4 ff <0f> 0b e9 28 86 ff ff e8 3a c5 b9 ff 48 8d 7b 40 b8 ff ff 37 00 48 [ 53.911206] RSP: 0018:ffff888093e1fd88 EFLAGS: 00010282 [ 53.916551] RAX: 0000000000000024 RBX: ffff888094a3d960 RCX: 0000000000000000 [ 53.923808] RDX: 0000000000000000 RSI: ffffffff8152d3a1 RDI: ffffed10127c3fa3 [ 53.931063] RBP: 0000000000000000 R08: 0000000000000024 R09: ffffed1015ce5079 [ 53.938314] R10: ffffed1015ce5078 R11: ffff8880ae7283c7 R12: ffff888094a3d9a8 [ 53.945570] R13: ffff88809916d840 R14: ffff88809916d898 R15: 0000000000000000 [ 53.952837] ? vprintk_func+0x81/0x17e [ 53.956714] ? inc_nlink.cold+0x11/0x18 [ 53.960715] minix_mkdir+0x71/0x1b0 [ 53.964325] ? minix_create+0x30/0x30 [ 53.968112] ? security_inode_mkdir+0xd9/0x110 [ 53.972702] vfs_mkdir+0x419/0x690 [ 53.976418] do_mkdirat+0x21e/0x280 [ 53.980040] ? __ia32_sys_mknod+0xb0/0xb0 [ 53.984188] ? filp_close+0x129/0x160 [ 53.987991] ? trace_hardirqs_off_caller+0x55/0x210 [ 53.992999] ? do_syscall_64+0x21/0x620 [ 53.996974] do_syscall_64+0xf9/0x620 [ 54.000766] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.005935] RIP: 0033:0x4449f9 [ 54.009112] Code: 0d d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 54.028015] RSP: 002b:00007fff567934b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 54.035748] RAX: ffffffffffffffda RBX: 00007fff567934c0 RCX: 00000000004449f9 [ 54.042998] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000020000400 [ 54.050248] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000400de0 [ 54.057500] R10: 00007fff56793390 R11: 0000000000000246 R12: 0000000000402660 [ 54.064749] R13: 00000000004026f0 R14: 0000000000000000 R15: 0000000000000000 [ 54.073409] Kernel Offset: disabled [ 54.077097] Rebooting in 86400 seconds..