[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty6. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.0.22' (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 (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)[ ***] 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 (15s / 1min 30s)[*** ] A start job is running for dev-ttyS0.device (15s / 1min 30s)[ 22.224586][ T22] audit: type=1400 audit(1628174142.136:8): avc: denied { execmem } for pid=336 comm="syz-executor174" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 22.266244][ T338] FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) [ 22.276294][ T338] incfs: Can't find or create .index dir in ./file0 [ 22.284225][ T338] BUG: Dentry ffff8881ecbd5dd0{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 22.294090][ T338] ------------[ cut here ]------------ [ 22.299536][ T338] WARNING: CPU: 0 PID: 338 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 22.307821][ T338] Modules linked in: [ 22.311686][ T338] CPU: 0 PID: 338 Comm: syz-executor174 Not tainted 5.4.125-syzkaller-00012-ge7e1f9adf836 #0 [ 22.321795][ T338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 22.331853][ T338] RIP: 0010:umount_check+0x179/0x1c0 [ 22.337120][ T338] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 a0 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 [ 22.356814][ T338] RSP: 0018:ffff8881e5a87a58 EFLAGS: 00010282 [ 22.362849][ T338] RAX: 0000000000000055 RBX: ffffffff85fc6160 RCX: 099e0cb4c912f700 [ 22.370790][ T338] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 22.378730][ T338] RBP: ffff8881e545d420 R08: ffffffff814e90d7 R09: ffffed103edc9608 [ 22.386671][ T338] R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 [ 22.394612][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecbd5dd0 [ 22.402587][ T338] FS: 0000000001821300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 22.411527][ T338] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.418123][ T338] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406f0 [ 22.426063][ T338] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.434006][ T338] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.441944][ T338] Call Trace: [ 22.445245][ T338] d_walk+0x2d9/0x540 [ 22.449197][ T338] ? __d_free+0x20/0x20 [ 22.453318][ T338] shrink_dcache_for_umount+0x8a/0x1a0 [ 22.458782][ T338] generic_shutdown_super+0x63/0x2a0 [ 22.464154][ T338] kill_block_super+0x79/0xd0 [ 22.468799][ T338] deactivate_locked_super+0xaf/0x100 [ 22.476168][ T338] deactivate_super+0x1b3/0x270 [ 22.480986][ T338] ? deactivate_locked_super+0x100/0x100 [ 22.486615][ T338] ? dput+0x4de/0x5d0 [ 22.490563][ T338] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 22.495639][ T338] ? find_next_bit+0xc6/0x110 [ 22.500280][ T338] cleanup_mnt+0x432/0x4e0 [ 22.504678][ T338] task_work_run+0x186/0x1b0 [ 22.509237][ T338] do_exit+0xcb9/0x2bf0 [ 22.513361][ T338] ? mm_update_next_owner+0x5c0/0x5c0 [ 22.518696][ T338] ? __up_read+0x6f/0x1b0 [ 22.522991][ T338] ? __down_read+0x210/0x210 [ 22.527565][ T338] ? check_preemption_disabled+0x154/0x330 [ 22.533346][ T338] ? debug_smp_processor_id+0x20/0x20 [ 22.538684][ T338] do_group_exit+0x15c/0x2c0 [ 22.543250][ T338] ? do_user_addr_fault+0x6b0/0xb40 [ 22.548427][ T338] __do_sys_exit_group+0x13/0x20 [ 22.553349][ T338] __se_sys_exit_group+0x10/0x10 [ 22.558255][ T338] __x64_sys_exit_group+0x37/0x40 [ 22.563245][ T338] do_syscall_64+0xcb/0x1e0 [ 22.567714][ T338] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 22.573571][ T338] RIP: 0033:0x442e19 [ 22.577434][ T338] Code: Bad RIP value. [ 22.581479][ T338] RSP: 002b:00007ffc61b89778 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 22.589861][ T338] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442e19 [ 22.597799][ T338] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 22.605745][ T338] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 22.613692][ T338] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 22.621628][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 22.629567][ T338] ---[ end trace 90e0518f7133b055 ]--- [ 22.636222][ T338] 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 (16s / 1m