Warning: Permanently added '10.128.0.38' (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)[   21.072828][   T22] audit: type=1400 audit(1619305111.800:8): avc:  denied  { execmem } for  pid=336 comm="syz-executor284" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[   21.102481][  T338] FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
[   21.112674][  T338] incfs: Can't find or create .index dir in ./file0
[   21.120124][  T338] BUG: Dentry ffff8881efba3550{i=0,n=.index}  still in use (1) [unmount of msdos loop0]
[   21.129887][  T338] ------------[ cut here ]------------
[   21.135348][  T338] WARNING: CPU: 1 PID: 338 at fs/dcache.c:1597 umount_check+0x179/0x1c0
[   21.143650][  T338] Modules linked in:
[   21.147528][  T338] CPU: 1 PID: 338 Comm: syz-executor284 Not tainted 5.4.114-syzkaller-00371-gaa0556d71ff1 #0
[   21.157641][  T338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   21.167701][  T338] RIP: 0010:umount_check+0x179/0x1c0
[   21.172961][  T338] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 20 f4 e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 67 e3 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
[   21.192552][  T338] RSP: 0018:ffff8881e89ffa58 EFLAGS: 00010282
[   21.198589][  T338] RAX: 0000000000000055 RBX: ffffffff85fc5400 RCX: bc52800972801000
[   21.206536][  T338] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
[   21.214495][  T338] RBP: ffff8881e9207420 R08: ffffffff814e8767 R09: ffffed103ede5e08
[   21.222471][  T338] R10: ffffed103ede5e08 R11: 0000000000000000 R12: dffffc0000000000
[   21.230578][  T338] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efba3550
[   21.238724][  T338] FS:  0000000001e39300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
[   21.247624][  T338] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.254178][  T338] CR2: 00000000004b51d0 CR3: 00000001f4010000 CR4: 00000000001406e0
[   21.262247][  T338] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   21.270189][  T338] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   21.278146][  T338] Call Trace:
[   21.281428][  T338]  d_walk+0x2d9/0x540
[   21.285468][  T338]  ? __d_free+0x20/0x20
[   21.289599][  T338]  shrink_dcache_for_umount+0x8a/0x1a0
[   21.295051][  T338]  generic_shutdown_super+0x63/0x2a0
[   21.300323][  T338]  kill_block_super+0x79/0xd0
[   21.304970][  T338]  deactivate_locked_super+0xaf/0x100
[   21.310311][  T338]  deactivate_super+0x1b3/0x270
[   21.315155][  T338]  ? deactivate_locked_super+0x100/0x100
[   21.320770][  T338]  ? dput+0x4de/0x5d0
[   21.324732][  T338]  ? _raw_spin_lock_irq+0xa4/0x1b0
[   21.329816][  T338]  ? find_next_bit+0xc6/0x110
[   21.334488][  T338]  cleanup_mnt+0x432/0x4e0
[   21.339922][  T338]  task_work_run+0x186/0x1b0
[   21.344500][  T338]  do_exit+0xcb9/0x2bf0
[   21.348640][  T338]  ? mm_update_next_owner+0x5c0/0x5c0
[   21.354076][  T338]  ? __up_read+0x6f/0x1b0
[   21.358393][  T338]  ? __down_read+0x210/0x210
[   21.362960][  T338]  ? check_preemption_disabled+0x154/0x330
[   21.368737][  T338]  ? debug_smp_processor_id+0x20/0x20
[   21.374087][  T338]  do_group_exit+0x15c/0x2c0
[   21.378670][  T338]  ? do_user_addr_fault+0x6b0/0xb40
[   21.383842][  T338]  __do_sys_exit_group+0x13/0x20
[   21.388770][  T338]  __se_sys_exit_group+0x10/0x10
[   21.393679][  T338]  __x64_sys_exit_group+0x37/0x40
[   21.398780][  T338]  do_syscall_64+0xcb/0x1e0
[   21.403254][  T338]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   21.409169][  T338] RIP: 0033:0x442e39
[   21.413080][  T338] Code: Bad RIP value.
[   21.417568][  T338] RSP: 002b:00007ffeb63cacd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   21.426005][  T338] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442e39
[   21.434116][  T338] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
[   21.442070][  T338] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000
[   21.450019][  T338] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0
[   21.457966][  T338] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
[   21.465922][  T338] ---[ end trace 656cde8e29042b9b ]---
[    *[0[   21.472835]