Starting Permit User Sessions... Starting OpenBSD Secure Shell server... [ OK ] Started Permit User Sessions. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty5. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.1.27' (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 (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 (12s / 1min 30s)[ *] A start job is running for dev-ttyS0.device (12s / 1min 30s)[ 19.429653][ T22] audit: type=1400 audit(1621928270.585:8): avc: denied { execmem } for pid=336 comm="syz-executor217" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 19.466974][ T339] FAT-fs (loop0): Directory bread(block 6) failed [ 19.475375][ T339] FAT-fs (loop0): Directory bread(block 6) failed [ 19.481957][ T339] incfs: Can't find or create .index dir in ./file0 [ 19.490440][ T339] BUG: Dentry ffff8881ecf7d990{i=0,n=.index} still in use (1) [unmount of vfat loop0] [ 19.500112][ T339] ------------[ cut here ]------------ [ 19.505548][ T339] WARNING: CPU: 0 PID: 339 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 19.513830][ T339] Modules linked in: [ 19.517687][ T339] CPU: 0 PID: 339 Comm: syz-executor217 Not tainted 5.4.121-syzkaller-00749-gc6775ce1621b #0 [ 19.527793][ T339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.537813][ T339] RIP: 0010:umount_check+0x179/0x1c0 [ 19.543058][ T339] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 e0 01 e9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 a9 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 [ 19.562739][ T339] RSP: 0018:ffff8881e662f738 EFLAGS: 00010282 [ 19.568765][ T339] RAX: 0000000000000054 RBX: ffffffff85fc59a0 RCX: 7a247458edbcfd00 [ 19.576728][ T339] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 19.584663][ T339] RBP: ffff8881f39d9420 R08: ffffffff814e8397 R09: ffffed103edc5e08 [ 19.592598][ T339] R10: ffffed103edc5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 19.600565][ T339] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecf7d990 [ 19.608502][ T339] FS: 00007f300a55c700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 19.617395][ T339] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.623978][ T339] CR2: 00000000004d15c0 CR3: 0000000005e0e000 CR4: 00000000001406f0 [ 19.631914][ T339] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.639848][ T339] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.647783][ T339] Call Trace: [ 19.651059][ T339] d_walk+0x2d9/0x540 [ 19.651065][ T339] ? __d_free+0x20/0x20 [ 19.651075][ T339] shrink_dcache_for_umount+0x8a/0x1a0 [ 19.664564][ T339] generic_shutdown_super+0x63/0x2a0 [ 19.669819][ T339] kill_block_super+0x79/0xd0 [ 19.674475][ T339] deactivate_locked_super+0xaf/0x100 [ 19.679847][ T339] deactivate_super+0x1b3/0x270 [ 19.684676][ T339] ? deactivate_locked_super+0x100/0x100 [ 19.690287][ T339] ? dput+0x4de/0x5d0 [ 19.694581][ T339] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.699671][ T339] ? find_next_bit+0xc6/0x110 [ 19.704334][ T339] cleanup_mnt+0x432/0x4e0 [[ 19.708735][ T339] task_work_run+0x186/0x1b0 [ 19.713380][ T339] do_exit+0xcb9/0x2bf0 [ 19.717545][ T339] ? mm_update_next_owner+0x5c0/0x5c0 *[0;[ 19.722919][ T339] ? debug_smp_processor_id+0x20/0x20 [ 19.729648][ T339] ? stack_trace_snprint+0x150/0x150 [ 19.734911][ T339] ? _raw_spin_lock_irq+0xa4/0x1b0 1;31m*] [ 19.739992][ T339] ? _raw_spin_lock_irqsave+0x210/0x210 [ 19.746554][ T339] do_group_exit+0x15c/0x2c0 [ 19.751125][ T339] get_signal+0x164f/0x1fc0 A start job is r[ 19.755611][ T339] ? ptrace_notify+0x340/0x340 [ 19.761734][ T339] ? check_preemption_disabled+0x154/0x330 [ 19.767526][ T339] do_signal+0x8d/0x610 unning for dev-t[ 19.771657][ T339] ? kfree+0xe0/0x660 [ 19.776988][ T339] ? signal_fault+0x1e0/0x1e0 tyS0.device (13s[ 19.781656][ T339] ? ksys_mount+0xe0/0xf0 [ 19.787350][ T339] ? __x64_sys_futex+0x1d/0xf0 / 1min 30s)[ 19.792100][ T339] prepare_exit_to_usermode+0x207/0x310 [ 19.798655][ T339] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 19.804519][ T339] RIP: 0033:0x449f19 [ 19.808381][ T339] Code: Bad RIP value. [ 19.812413][ T339] RSP: 002b:00007f300a55c308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 19.820783][ T339] RAX: fffffffffffffe00 RBX: 00000000004cb408 RCX: 0000000000449f19 [ 19.828716][ T339] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cb408 [ 19.836649][ T339] RBP: 00000000004cb400 R08: 0000000000000000 R09: 0000000000000000 [ 19.844581][ T339] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb40c [ 19.852516][ T339] R13: 0030656c69662f2e R14: 6e656d6572636e69 R15: 0000000000022000 [ 19.860463][ T339] ---[ end trace 5460cc5d29dbd4d2 ]--- [ 19.866272][ T339] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day...