[ 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 '10.128.0.181' (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 (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 (13s / 1min 30s)[ **] A start job is running for dev-ttyS0.device (13s / 1min 30s)[ ***] A start job is running for dev-ttyS0.device (14s / 1min 30s)[ 22.405668][ T22] audit: type=1400 audit(1632823562.345:8): avc: denied { execmem } for pid=340 comm="syz-executor164" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 22.446965][ T343] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 22.456714][ T343] EXT4-fs error (device loop0): __ext4_new_inode:930: comm syz-executor164: reserved inode found cleared - inode=1 [ 22.469209][ T343] incfs: Can't find or create .index dir in ./file0 [ 22.477545][ T343] BUG: Dentry ffff8881ec99f440{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ 22.487245][ T343] ------------[ cut here ]------------ [ 22.492801][ T343] WARNING: CPU: 0 PID: 343 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 22.501244][ T343] Modules linked in: [ 22.505120][ T343] CPU: 0 PID: 343 Comm: syz-executor164 Not tainted 5.4.125-syzkaller-00028-gd5fa5fb1ccb2 #0 [ 22.515249][ T343] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 22.525375][ T343] RIP: 0010:umount_check+0x179/0x1c0 [ 22.530628][ T343] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 a0 09 e9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 27 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 [ 22.550222][ T343] RSP: 0018:ffff8881e608f738 EFLAGS: 00010282 [ 22.556264][ T343] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: 10d5c5f7a0ef9800 [ 22.564206][ T343] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 22.572163][ T343] RBP: ffff8881f48e5420 R08: ffffffff814e90e7 R09: ffffed103edc9608 [ 22.572167][ T343] R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 [ 22.572171][ T343] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ec99f440 [ 22.572183][ T343] FS: 00007f06a4415700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 22.604973][ T343] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.611535][ T343] CR2: 00007f06a44b90e8 CR3: 0000000005e0e000 CR4: 00000000003406f0 [ 22.619517][ T343] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.627473][ T343] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.635422][ T343] Call Trace: [[ 22.638701][ T343] d_walk+0x2d9/0x540 [ 22.643089][ T343] ? __d_free+0x20/0x20 [ 22.647222][ T343] shrink_dcache_for_umount+0x8a/0x1a0 [ 22.652668][ T343] generic_shutdown_super+0x63/0x2a0 [ 22.657935][ T343] kill_block_super+0x79/0xd0 *[0;1;[ 22.662873][ T343] deactivate_locked_super+0xaf/0x100 [ 22.669602][ T343] deactivate_super+0x1b3/0x270 31m**[ 22.674430][ T343] ? deactivate_locked_super+0x100/0x100 [ 22.681425][ T343] ? dput+0x4de/0x5d0 ] [ 22.685397][ T343] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 22.691342][ T343] ? find_next_bit+0xc6/0x110 [ 22.696009][ T343] cleanup_mnt+0x432/0x4e0 [ 22.700409][ T343] task_work_run+0x186/0x1b0 A start job is r[ 22.704979][ T343] do_exit+0xcb9/0x2bf0 unning for dev-t[ 22.710504][ T343] ? mm_update_next_owner+0x5c0/0x5c0 [ 22.717232][ T343] ? debug_smp_processor_id+0x20/0x20 [ 22.722601][ T343] ? stack_trace_snprint+0x150/0x150 tyS0.device (15s[ 22.727871][ T343] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 22.734435][ T343] ? _raw_spin_lock_irqsave+0x210/0x210 [ 22.739964][ T343] do_group_exit+0x15c/0x2c0 / 1min 30s)[ 22.744538][ T343] get_signal+0x164f/0x1fc0 [ 22.750227][ T343] ? ptrace_notify+0x340/0x340 [ 22.755069][ T343] ? check_preemption_disabled+0x154/0x330 [ 22.760852][ T343] do_signal+0x8d/0x610 [ 22.764982][ T343] ? kfree+0xe0/0x660 [ 22.768933][ T343] ? signal_fault+0x1e0/0x1e0 [ 22.773712][ T343] ? ksys_mount+0xe0/0xf0 [ 22.778028][ T343] ? __x64_sys_futex+0x1d/0xf0 [ 22.782774][ T343] prepare_exit_to_usermode+0x207/0x310 [ 22.788303][ T343] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 22.794173][ T343] RIP: 0033:0x7f06a44681c9 [ 22.798583][ T343] Code: Bad RIP value. [ 22.802629][ T343] RSP: 002b:00007f06a44152f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 22.811005][ T343] RAX: fffffffffffffe00 RBX: 00007f06a44ed3e0 RCX: 00007f06a44681c9 [ 22.818957][ T343] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f06a44ed3e8 [ 22.826909][ T343] RBP: 00007f06a44ed3ec R08: 0000000000000000 R09: 0000000000000000 [ 22.834849][ T343] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 22.842882][ T343] R13: e5d26e84aa4cf3c6 R14: 6e656d6572636e69 R15: 00007f06a44ed3e8 [ 22.850838][ T343] ---[ end trace 3efc3b9b71b91c14 ]--- [ 22.858822][ T343] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day...