Starting Permit User Sessions... Starting OpenBSD Secure Shell server... [ OK ] Started Permit User Sessions. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty3. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.0.80' (ECDSA) to the list of known hosts. executing program [* ] A start job is running for dev-ttyS0.device (8s / 1min 30s)[** ] A start job is running for dev-ttyS0.device (9s / 1min 30s)[*** ] A start job is running for dev-ttyS0.device (9s / 1min 30s)[ *** ] A start job is running for dev-ttyS0.device (10s / 1min 30s)[ *** ] A start job is running for dev-ttyS0.device (10s / 1min 30s)[ ***] A start job is running for dev-ttyS0.device (11s / 1min 30s)[ **] A start job is running for dev-ttyS0.device (11s / 1min 30s)[ *] A start job is running for dev-ttyS0.device (12s / 1min 30s)[ **] A start job is running for dev-ttyS0.device (12s / 1min 30s)[ ***] A start job is running for dev-ttyS0.device (13s / 1min 30s)[ 21.118593][ T22] audit: type=1400 audit(1631068619.333:8): avc: denied { execmem } for pid=326 comm="syz-executor169" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 21.160608][ T327] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 21.170317][ T327] EXT4-fs error (device loop0): __ext4_new_inode:930: comm syz-executor169: reserved inode found cleared - inode=1 [ 21.183229][ T327] incfs: Can't find or create .index dir in ./file0 [ 21.190461][ T327] BUG: Dentry ffff8881ecae7220{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ 21.200479][ T327] ------------[ cut here ]------------ [ 21.205980][ T327] WARNING: CPU: 0 PID: 327 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 21.214272][ T327] Modules linked in: [ 21.218144][ T327] CPU: 0 PID: 327 Comm: syz-executor169 Not tainted 5.4.125-syzkaller-00017-g8670e680e307 #0 [ 21.228264][ T327] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 21.238307][ T327] RIP: 0010:umount_check+0x179/0x1c0 [ 21.243595][ T327] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 60 0c e9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 37 a2 af ff 48 83 c4 08 <0f> 0b e9 fd fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c d4 fe ff [ 21.263183][ T327] RSP: 0018:ffff8881e66efa58 EFLAGS: 00010282 [ 21.263191][ T327] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: 43ea2b927ab83300 [ 21.263195][ T327] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 21.263205][ T327] RBP: ffff8881e6a0a420 R08: ffffffff814e90d7 R09: ffffed103edc9608 [ 21.293239][ T327] R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 [ 21.301286][ T327] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecae7220 [ 21.309434][ T327] FS: 0000000001356300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 21.318376][ T327] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.325250][ T327] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406f0 [ 21.333253][ T327] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.341265][ T327] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.349226][ T327] Call Trace: [[ 21.352530][ T327] d_walk+0x2d9/0x540 [ 21.357004][ T327] ? __d_free+0x20/0x20 [ 21.361164][ T327] shrink_dcache_for_umount+0x8a/0x1a0 *[0;1;[ 21.366617][ T327] generic_shutdown_super+0x63/0x2a0 [ 21.373288][ T327] kill_block_super+0x79/0xd0 31m**[ 21.377955][ T327] deactivate_locked_super+0xaf/0x100 [ 21.384693][ T327] deactivate_super+0x1b3/0x270 [ 21.389703][ T327] ? deactivate_locked_super+0x100/0x100 ] A start j[ 21.395575][ T327] ? dput+0x4de/0x5d0 [ 21.400919][ T327] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 21.406134][ T327] ? find_next_bit+0xc6/0x110 ob is running fo[ 21.410864][ T327] cleanup_mnt+0x432/0x4e0 r dev-ttyS0.devi[ 21.416657][ T327] task_work_run+0x186/0x1b0 [ 21.422754][ T327] do_exit+0xcb9/0x2bf0 [ 21.426896][ T327] ? mm_update_next_owner+0x5c0/0x5c0 ce (13s / 1min 3[ 21.432246][ T327] ? __up_read+0x6f/0x1b0 [ 21.437941][ T327] ? __down_read+0x210/0x210 0s)[ 21.442509][ T327] ? check_preemption_disabled+0x154/0x330 [ 21.448542][ T327] ? debug_smp_processor_id+0x20/0x20 [ 21.454008][ T327] do_group_exit+0x15c/0x2c0 [ 21.458573][ T327] ? do_user_addr_fault+0x6b0/0xb40 [ 21.463780][ T327] __do_sys_exit_group+0x13/0x20 [ 21.468689][ T327] __se_sys_exit_group+0x10/0x10 [ 21.473598][ T327] __x64_sys_exit_group+0x37/0x40 [ 21.478597][ T327] do_syscall_64+0xcb/0x1e0 [ 21.483074][ T327] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 21.488952][ T327] RIP: 0033:0x442fc9 [ 21.492823][ T327] Code: Bad RIP value. [ 21.496874][ T327] RSP: 002b:00007ffcfbb7d338 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 21.505268][ T327] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442fc9 [ 21.513211][ T327] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 21.521154][ T327] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 21.529188][ T327] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 21.537129][ T327] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 21.545081][ T327] ---[ end trace ac4642ed6d9b39b2 ]--- [ 21.558707][ T327] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day...