Starting OpenBSD Secure Shell server... Starting Permit User Sessions... [ OK ] Started Permit User Sessions. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty5. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.0.201' (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 (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)[ 20.954776][ T22] audit: type=1400 audit(1633943943.702:8): avc: denied { execmem } for pid=339 comm="syz-executor857" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 20.996528][ T342] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 21.006243][ T342] EXT4-fs error (device loop0): __ext4_new_inode:930: comm syz-executor857: reserved inode found cleared - inode=1 [ 21.019526][ T342] incfs: Can't find or create .index dir in ./file0 [ 21.028909][ T342] BUG: Dentry ffff8881ecba0aa0{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ 21.038589][ T342] ------------[ cut here ]------------ [ 21.044030][ T342] WARNING: CPU: 0 PID: 342 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 21.052356][ T342] Modules linked in: [ 21.056280][ T342] CPU: 0 PID: 342 Comm: syz-executor857 Not tainted 5.4.125-syzkaller-00026-g23c18f1ad0fc #0 [ 21.066508][ T342] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 21.076599][ T342] RIP: 0010:umount_check+0x179/0x1c0 [ 21.082009][ T342] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 60 08 e9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 07 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 [ 21.101596][ T342] RSP: 0018:ffff8881dc8b7738 EFLAGS: 00010282 [ 21.107657][ T342] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: 6c75382ecfee8000 [ 21.115605][ T342] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 21.123554][ T342] RBP: ffff8881e5af9420 R08: ffffffff814e90e7 R09: ffffed103edc9608 [ 21.131535][ T342] R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 [ 21.139493][ T342] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecba0aa0 [ 21.147439][ T342] FS: 00007ffad50b6700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 21.156339][ T342] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.162894][ T342] CR2: 00007ffad515a078 CR3: 00000001eb1b0000 CR4: 00000000003406f0 [ 21.170839][ T342] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.178898][ T342] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.186850][ T342] Call Trace: [ 21.190113][ T342] d_walk+0x2d9/0x540 [ 21.194063][ T342] ? __d_free+0x20/0x20 [ 21.198187][ T342] shrink_dcache_for_umount+0x8a/0x1a0 [ 21.203789][ T342] generic_shutdown_super+0x63/0x2a0 [ 21.209041][ T342] kill_block_super+0x79/0xd0 [ 21.213781][ T342] deactivate_locked_super+0xaf/0x100 [ 21.219121][ T342] deactivate_super+0x1b3/0x270 [ 21.223940][ T342] ? deactivate_locked_super+0x100/0x100 [ 21.229538][ T342] ? dput+0x4de/0x5d0 [ 21.233489][ T342] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 21.238567][ T342] ? find_next_bit+0xc6/0x110 [ 21.243214][ T342] cleanup_mnt+0x432/0x4e0 [ 21.247613][ T342] task_work_run+0x186/0x1b0 [ 21.252181][ T342] do_exit+0xcb9/0x2bf0 [ 21.256570][ T342] ? mm_update_next_owner+0x5c0/0x5c0 [ 21.262010][ T342] ? debug_smp_processor_id+0x20/0x20 [ 21.267351][ T342] ? stack_trace_snprint+0x150/0x150 [ 21.272609][ T342] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 21.277692][ T342] ? _raw_spin_lock_irqsave+0x210/0x210 [ 21.283217][ T342] do_group_exit+0x15c/0x2c0 [ 21.287776][ T342] get_signal+0x164f/0x1fc0 [ 21.292257][ T342] ? ptrace_notify+0x340/0x340 [ 21.297077][ T342] ? check_preemption_disabled+0x154/0x330 [ 21.302857][ T342] do_signal+0x8d/0x610 [ 21.306989][ T342] ? kfree+0xe0/0x660 [ 21.310942][ T342] ? signal_fault+0x1e0/0x1e0 [ 21.315593][ T342] ? ksys_mount+0xe0/0xf0 [ 21.319914][ T342] ? __x64_sys_futex+0x1d/0xf0 [ 21.324646][ T342] prepare_exit_to_usermode+0x207/0x310 [ 21.330177][ T342] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 21.336065][ T342] RIP: 0033:0x7ffad5109159 [ 21.340453][ T342] Code: Bad RIP value. [ 21.344487][ T342] RSP: 002b:00007ffad50b62f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 21.352864][ T342] RAX: fffffffffffffe00 RBX: 00007ffad518e3e0 RCX: 00007ffad5109159 [ 21.360912][ T342] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007ffad518e3e8 [ 21.368854][ T342] RBP: 00007ffad518e3ec R08: 0000000000000000 R09: 0000000000000000 [ 21.376793][ T342] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 21.384733][ T342] R13: e5d26e84aa4cf3c6 R14: 6e656d6572636e69 R15: 00007ffad518e3e8 [ 21.392678][ T342] ---[ end trace 51f38e80c30d9c26 ]--- [ 21.400683][ T342] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... [ ***] A start job is running for dev-ttyS0.device (14s / 1min 30s)