[ OK ] Started Permit User Sessions. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty3. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.1.58' (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 (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)[ *** ] A start job is running for dev-ttyS0.device (14s / 1min 30s)[ 23.037960][ T22] audit: type=1400 audit(1628847759.133:8): avc: denied { execmem } for pid=337 comm="syz-executor545" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 23.080656][ T339] incfs: Can't find or create .index dir in ./file0 [ 23.087759][ T339] BUG: Dentry ffff8881ec9efee0{i=0,n=.index} still in use (1) [unmount of vfat loop0] [ 23.097723][ T339] ------------[ cut here ]------------ [ 23.103164][ T339] WARNING: CPU: 0 PID: 339 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 23.111449][ T339] Modules linked in: [ 23.115316][ T339] CPU: 0 PID: 339 Comm: syz-executor545 Not tainted 5.4.125-syzkaller-00007-g299ecc4fc137 #0 [ 23.125435][ T339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.135478][ T339] RIP: 0010:umount_check+0x179/0x1c0 [ 23.140736][ T339] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 20 09 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 [ 23.160314][ T339] RSP: 0018:ffff8881e5047a58 EFLAGS: 00010282 [ 23.166347][ T339] RAX: 0000000000000054 RBX: ffffffff85fc5e40 RCX: 432595c18fafb400 [ 23.174289][ T339] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 23.182226][ T339] RBP: ffff8881d987d420 R08: ffffffff814e90d7 R09: ffffed103edc9608 [ 23.190168][ T339] R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 [ 23.198108][ T339] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ec9efee0 [ 23.206051][ T339] FS: 000000000180d300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 23.214946][ T339] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.221496][ T339] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406f0 [ 23.229436][ T339] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.237376][ T339] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.245312][ T339] Call Trace: [ 23.248591][ T339] d_walk+0x2d9/0x540 [ 23.252560][ T339] ? __d_free+0x20/0x20 [ 23.256687][ T339] shrink_dcache_for_umount+0x8a/0x1a0 [ 23.262114][ T339] generic_shutdown_super+0x63/0x2a0 [ 23.267367][ T339] kill_block_super+0x79/0xd0 [ 23.272016][ T339] deactivate_locked_super+0xaf/0x100 [ 23.277358][ T339] deactivate_super+0x1b3/0x270 [ 23.282175][ T339] ? deactivate_locked_super+0x100/0x100 [ 23.287775][ T339] ? dput+0x4de/0x5d0 [ 23.291723][ T339] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 23.296801][ T339] ? find_next_bit+0xc6/0x110 [ 23.301451][ T339] cleanup_mnt+0x432/0x4e0 [ 23.305836][ T339] task_work_run+0x186/0x1b0 [ 23.310394][ T339] do_exit+0xcb9/0x2bf0 [ 23.314518][ T339] ? mm_update_next_owner+0x5c0/0x5c0 [ 23.319856][ T339] ? __up_read+0x6f/0x1b0 [ 23.324154][ T339] ? __down_read+0x210/0x210 [ 23.328709][ T339] ? check_preemption_disabled+0x154/0x330 [ 23.334480][ T339] ? debug_smp_processor_id+0x20/0x20 [ 23.339819][ T339] do_group_exit+0x15c/0x2c0 [ 23.344376][ T339] ? do_user_addr_fault+0x6b0/0xb40 [ 23.349539][ T339] __do_sys_exit_group+0x13/0x20 [ 23.354444][ T339] __se_sys_exit_group+0x10/0x10 [ 23.359346][ T339] __x64_sys_exit_group+0x37/0x40 [ 23.364335][ T339] do_syscall_64+0xcb/0x1e0 [ 23.368808][ T339] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 23.374665][ T339] RIP: 0033:0x442e09 [ 23.378527][ T339] Code: Bad RIP value. [ 23.382560][ T339] RSP: 002b:00007fff1a393368 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 23.390935][ T339] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442e09 [ 23.398874][ T339] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 23.406812][ T339] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 23.414752][ T339] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 23.422690][ T339] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 23.430631][ T339] ---[ end trace 1323f1f22d3b06d6 ]--- [ 23.436838][ T339] 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 (15s / 1min 30s)