Starting Permit User Sessions... Starting OpenBSD Secure Shell server... [ OK ] Started Permit User Sessions. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty3. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.0.192' (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)[ 19.651652][ T22] audit: type=1400 audit(1632303785.337:8): avc: denied { execmem } for pid=332 comm="syz-executor111" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 19.692477][ T335] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 19.702219][ T335] EXT4-fs error (device loop0): __ext4_new_inode:930: comm syz-executor111: reserved inode found cleared - inode=1 [ 19.718018][ T335] incfs: Can't find or create .index dir in ./file0 [ 19.729388][ T335] BUG: Dentry ffff8881ec945660{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ 19.739198][ T335] ------------[ cut here ]------------ [ 19.744650][ T335] WARNING: CPU: 1 PID: 335 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 19.752939][ T335] Modules linked in: [ 19.756838][ T335] CPU: 1 PID: 335 Comm: syz-executor111 Not tainted 5.4.125-syzkaller-00009-g546305780d82 #0 [ 19.766948][ T335] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.776978][ T335] RIP: 0010:umount_check+0x179/0x1c0 [ 19.782228][ T335] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 a0 08 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 [ 19.801799][ T335] RSP: 0018:ffff8881e5d4f738 EFLAGS: 00010282 [ 19.807837][ T335] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: 9f43c59876a0b200 [ 19.815778][ T335] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 19.823717][ T335] RBP: ffff8881f3fdb420 R08: ffffffff814e90d7 R09: ffffed103ede9608 [ 19.831655][ T335] R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 [ 19.839605][ T335] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ec945660 [ 19.847544][ T335] FS: 00007f8a0f46a700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 19.856448][ T335] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.863014][ T335] CR2: 00005575a2e3eb40 CR3: 0000000005e0e000 CR4: 00000000001406e0 [ 19.871014][ T335] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.878960][ T335] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.886902][ T335] Call Trace: [ 19.890211][ T335] d_walk+0x2d9/0x540 [ 19.894162][ T335] ? __d_free+0x20/0x20 [ 19.898292][ T335] shrink_dcache_for_umount+0x8a/0x1a0 [ 19.904270][ T335] generic_shutdown_super+0x63/0x2a0 [ 19.909557][ T335] kill_block_super+0x79/0xd0 [ 19.914219][ T335] deactivate_locked_super+0xaf/0x100 [ 19.919566][ T335] deactivate_super+0x1b3/0x270 [ 19.924385][ T335] ? deactivate_locked_super+0x100/0x100 [ 19.929984][ T335] ? dput+0x4de/0x5d0 [ 19.933935][ T335] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.939014][ T335] ? find_next_bit+0xc6/0x110 [ 19.943657][ T335] cleanup_mnt+0x432/0x4e0 [ 19.948042][ T335] task_work_run+0x186/0x1b0 [ 19.952600][ T335] do_exit+0xcb9/0x2bf0 [ 19.956724][ T335] ? mm_update_next_owner+0x5c0/0x5c0 [ 19.962061][ T335] ? debug_smp_processor_id+0x20/0x20 [ 19.967403][ T335] ? stack_trace_snprint+0x150/0x150 [ 19.972656][ T335] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.977733][ T335] ? _raw_spin_lock_irqsave+0x210/0x210 [ 19.983255][ T335] do_group_exit+0x15c/0x2c0 [ 19.987811][ T335] get_signal+0x164f/0x1fc0 [ 19.992282][ T335] ? ptrace_notify+0x340/0x340 [ 19.997014][ T335] ? check_preemption_disabled+0x154/0x330 [ 20.002782][ T335] do_signal+0x8d/0x610 [ 20.006918][ T335] ? kfree+0xe0/0x660 [ 20.010871][ T335] ? signal_fault+0x1e0/0x1e0 [ 20.015515][ T335] ? ksys_mount+0xe0/0xf0 [ 20.019810][ T335] ? __x64_sys_futex+0x1d/0xf0 [ 20.024546][ T335] prepare_exit_to_usermode+0x207/0x310 [ 20.030061][ T335] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.035921][ T335] RIP: 0033:0x7f8a0f4bd239 [ 20.040305][ T335] Code: Bad RIP value. [ 20.044335][ T335] RSP: 002b:00007f8a0f46a2f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 20.052714][ T335] RAX: fffffffffffffe00 RBX: 00007f8a0f5423e0 RCX: 00007f8a0f4bd239 [ 20.060654][ T335] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f8a0f5423e8 [ 20.068678][ T335] RBP: 00007f8a0f5423ec R08: 0000000000000000 R09: 0000000000000000 [ 20.076630][ T335] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 20.084751][ T335] R13: e5d26e84aa4cf3c6 R14: 6e656d6572636e69 R15: 00007f8a0f5423e8 [ 20.092702][ T335] ---[ end trace b9bbca709c15c06d ]--- [ 20.107389][ T335] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day...