[[0;32m OK [0m] Reached target Login Prompts.
[[0;32m OK [0m] Reached target Multi-User System.
[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
Debian GNU/Linux 9 syzkaller ttyS0
Warning: Permanently added '10.128.0.87' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [ 59.619602][ T7042] MINIX-fs: mounting unchecked file system, running fsck is recommended
[ 59.646542][ T7042] ------------[ cut here ]------------
[ 59.652194][ T7042] WARNING: CPU: 1 PID: 7042 at fs/inode.c:360 inc_nlink+0x144/0x160
[ 59.660173][ T7042] Kernel panic - not syncing: panic_on_warn set ...
[ 59.666769][ T7042] CPU: 1 PID: 7042 Comm: syz-executor911 Not tainted 5.6.0-rc7-syzkaller #0
[ 59.675441][ T7042] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 59.685508][ T7042] Call Trace:
[ 59.688818][ T7042] dump_stack+0x188/0x20d
[ 59.693160][ T7042] ? inc_nlink+0x80/0x160
[ 59.697499][ T7042] panic+0x2e3/0x75c
[ 59.701410][ T7042] ? add_taint.cold+0x16/0x16
[ 59.706107][ T7042] ? printk+0xba/0xed
[ 59.710109][ T7042] ? kmsg_dump_rewind_nolock+0xd9/0xd9
[ 59.715580][ T7042] ? __warn.cold+0x14/0x35
[ 59.720132][ T7042] ? __warn+0xd5/0x1c8
[ 59.724192][ T7042] ? inc_nlink+0x144/0x160
[ 59.728594][ T7042] __warn.cold+0x2f/0x35
[ 59.732895][ T7042] ? inc_nlink+0x144/0x160
[ 59.737313][ T7042] report_bug+0x27b/0x2f0
[ 59.741688][ T7042] do_error_trap+0x12b/0x220
[ 59.746260][ T7042] ? inc_nlink+0x144/0x160
[ 59.750675][ T7042] do_invalid_op+0x32/0x40
[ 59.755085][ T7042] ? inc_nlink+0x144/0x160
[ 59.759517][ T7042] invalid_op+0x23/0x30
[ 59.763665][ T7042] RIP: 0010:inc_nlink+0x144/0x160
[ 59.768675][ T7042] Code: ff 4c 89 e7 e8 ed 99 ee ff e9 42 ff ff ff 4c 89 e7 e8 70 99 ee ff e9 fc fe ff ff 4c 89 e7 e8 63 99 ee ff eb d4 e8 5c d0 b1 ff <0f> 0b e9 6e ff ff ff e8 60 99 ee ff e9 44 ff ff ff e8 56 99 ee ff
[ 59.788623][ T7042] RSP: 0018:ffffc90000ef7d88 EFLAGS: 00010293
[ 59.794677][ T7042] RAX: ffff88808721c300 RBX: ffff888085dab990 RCX: ffffffff81c05430
[ 59.802994][ T7042] RDX: 0000000000000000 RSI: ffffffff81c054c4 RDI: 0000000000000007
[ 59.810987][ T7042] RBP: 0000000000000000 R08: ffff88808721c300 R09: ffffed1043789757
[ 59.818948][ T7042] R10: ffffed1043789756 R11: ffff88821bc4bab3 R12: ffff888085dab9d8
[ 59.826945][ T7042] R13: ffff888089848b80 R14: ffff888089848bd8 R15: 0000000000000000
[ 59.834970][ T7042] ? inc_nlink+0xb0/0x160
[ 59.839281][ T7042] ? inc_nlink+0x144/0x160
[ 59.843799][ T7042] ? inc_nlink+0x144/0x160
[ 59.848206][ T7042] minix_mkdir+0x71/0x1b0
[ 59.852525][ T7042] ? minix_create+0x30/0x30
[ 59.857021][ T7042] ? generic_permission+0x116/0x520
[ 59.862430][ T7042] ? security_inode_permission+0xc4/0xf0
[ 59.868047][ T7042] ? security_inode_mkdir+0xd9/0x110
[ 59.873330][ T7042] vfs_mkdir+0x419/0x670
[ 59.877601][ T7042] do_mkdirat+0x21e/0x280
[ 59.881962][ T7042] ? __ia32_sys_mknod+0xb0/0xb0
[ 59.886805][ T7042] ? filp_close+0x129/0x160
[ 59.891325][ T7042] ? trace_hardirqs_off_caller+0x55/0x230
[ 59.897154][ T7042] do_syscall_64+0xf6/0x7d0
[ 59.901836][ T7042] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 59.907761][ T7042] RIP: 0033:0x444a69
[ 59.911736][ T7042] 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
[ 59.931328][ T7042] RSP: 002b:00007ffc41646e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[ 59.939768][ T7042] RAX: ffffffffffffffda RBX: 00007ffc41646e50 RCX: 0000000000444a69
[ 59.947762][ T7042] RDX: 00000000000001ff RSI: 0000000020000080 RDI: 0000000000000003
[ 59.955751][ T7042] RBP: 0000000000000000 R08: 0000000000400e50 R09: 0000000000400e50
[ 59.963706][ T7042] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004026d0
[ 59.971696][ T7042] R13: 0000000000402760 R14: 0000000000000000 R15: 0000000000000000
[ 59.981330][ T7042] Kernel Offset: disabled
[ 59.985858][ T7042] Rebooting in 86400 seconds..