[ 44.140407] audit: type=1800 audit(1585059931.875:31): pid=7838 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 44.163388] audit: type=1800 audit(1585059931.885:32): pid=7838 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.114' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 53.112386] kauditd_printk_skb: 3 callbacks suppressed [ 53.112408] audit: type=1400 audit(1585059940.925:36): avc: denied { map } for pid=8024 comm="syz-executor393" path="/root/syz-executor393303710" 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 [ 53.134554] MINIX-fs: mounting unchecked file system, running fsck is recommended [ 53.155715] ------------[ cut here ]------------ [ 53.155727] audit: type=1400 audit(1585059940.965:37): avc: denied { associate } for pid=8024 comm="syz-executor393" name="file0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 53.183707] WARNING: CPU: 1 PID: 8024 at fs/inode.c:342 inc_nlink.cold+0x11/0x18 [ 53.191253] Kernel panic - not syncing: panic_on_warn set ... [ 53.191253] [ 53.198607] CPU: 1 PID: 8024 Comm: syz-executor393 Not tainted 4.19.112-syzkaller #0 [ 53.206471] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.215806] Call Trace: [ 53.218421] dump_stack+0x188/0x20d [ 53.222038] panic+0x26a/0x50e [ 53.225303] ? __warn_printk+0xf3/0xf3 [ 53.229192] ? inc_nlink.cold+0x11/0x18 [ 53.233166] ? __probe_kernel_read+0x16c/0x1b0 [ 53.238689] ? __warn.cold+0x5/0x46 [ 53.242310] ? __warn+0xe4/0x1c0 [ 53.245674] ? inc_nlink.cold+0x11/0x18 [ 53.249632] __warn.cold+0x20/0x46 [ 53.253161] ? inc_nlink.cold+0x11/0x18 [ 53.257120] report_bug+0x262/0x2a0 [ 53.260739] do_error_trap+0x1d7/0x310 [ 53.264611] ? math_error+0x310/0x310 [ 53.268422] ? __irq_work_queue_local+0x101/0x160 [ 53.273260] ? irq_work_queue+0x2b/0x80 [ 53.277224] ? wake_up_klogd+0x8c/0xc0 [ 53.281105] ? trace_hardirqs_off_caller+0x55/0x210 [ 53.286110] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 53.290942] invalid_op+0x14/0x20 [ 53.294381] RIP: 0010:inc_nlink.cold+0x11/0x18 [ 53.298964] Code: cb b9 ff 44 89 e0 5b 5d 41 5c c3 e8 00 92 ef ff eb c3 e8 09 92 ef ff eb 8e e8 82 cb b9 ff 48 c7 c7 80 ce 74 87 e8 6f e8 a4 ff <0f> 0b e9 28 86 ff ff e8 6a cb b9 ff 48 8d 7b 40 b8 ff ff 37 00 48 [ 53.317851] RSP: 0018:ffff88809dc17d88 EFLAGS: 00010282 [ 53.323196] RAX: 0000000000000024 RBX: ffff8880a30d2950 RCX: 0000000000000000 [ 53.330449] RDX: 0000000000000000 RSI: ffffffff8152d3a1 RDI: ffffed1013b82fa3 [ 53.337702] RBP: 0000000000000000 R08: 0000000000000024 R09: ffffed1015ce5079 [ 53.344967] R10: ffffed1015ce5078 R11: ffff8880ae7283c7 R12: ffff8880a30d2998 [ 53.352372] R13: ffff8880a6ab98c0 R14: ffff8880a6ab9918 R15: 0000000000000000 [ 53.359651] ? vprintk_func+0x81/0x17e [ 53.363711] ? inc_nlink.cold+0x11/0x18 [ 53.367674] minix_mkdir+0x71/0x1b0 [ 53.371292] ? minix_create+0x30/0x30 [ 53.375078] ? security_inode_mkdir+0xd9/0x110 [ 53.379669] vfs_mkdir+0x419/0x690 [ 53.383196] do_mkdirat+0x21e/0x280 [ 53.386811] ? __ia32_sys_mknod+0xb0/0xb0 [ 53.390961] ? filp_close+0x129/0x160 [ 53.394747] ? trace_hardirqs_off_caller+0x55/0x210 [ 53.399754] ? do_syscall_64+0x21/0x620 [ 53.403713] do_syscall_64+0xf9/0x620 [ 53.407502] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.412687] RIP: 0033:0x444a69 [ 53.415864] 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 [ 53.434762] RSP: 002b:00007fff2f3c0ba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 [ 53.442456] RAX: ffffffffffffffda RBX: 00007fff2f3c0bb0 RCX: 0000000000444a69 [ 53.449733] RDX: 0000000000000100 RSI: 0000000020000300 RDI: 0000000000000003 [ 53.457024] RBP: 0000000000000000 R08: 0000000000400e50 R09: 0000000000400e50 [ 53.464399] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004026d0 [ 53.471670] R13: 0000000000402760 R14: 0000000000000000 R15: 0000000000000000 [ 53.480547] Kernel Offset: disabled [ 53.484230] Rebooting in 86400 seconds..