Warning: Permanently added '10.128.10.21' (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)[   19.856166][   T22] audit: type=1400 audit(1632050684.355:8): avc:  denied  { execmem } for  pid=336 comm="syz-executor961" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[   19.896968][  T337] EXT4-fs (loop0): warning: mounting unchecked fs, running e2fsck is recommended
[   19.907354][  T337] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
[   19.917671][  T337] incfs: Can't find or create .index dir in ./file0
[   19.925626][  T337] BUG: Dentry ffff8881ecb57cc0{i=0,n=.index}  still in use (1) [unmount of ext4 loop0]
[   19.935337][  T337] ------------[ cut here ]------------
[   19.940797][  T337] WARNING: CPU: 1 PID: 337 at fs/dcache.c:1597 umount_check+0x179/0x1c0
[   19.949276][  T337] Modules linked in:
[   19.953154][  T337] CPU: 1 PID: 337 Comm: syz-executor961 Not tainted 5.4.125-syzkaller-00009-g546305780d82 #0
[   19.963287][  T337] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   19.973330][  T337] RIP: 0010:umount_check+0x179/0x1c0
[   19.978584][  T337] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 a0 08 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
[   19.998162][  T337] RSP: 0018:ffff8881e5807a58 EFLAGS: 00010282
[   20.004221][  T337] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: 325f7f6a6857bf00
[   20.012163][  T337] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
[   20.020278][  T337] RBP: ffff8881e58d0420 R08: ffffffff814e90d7 R09: ffffed103ede9608
[   20.028218][  T337] R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000
[   20.036162][  T337] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecb57cc0
[   20.044117][  T337] FS:  0000555556468300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
[   20.053022][  T337] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.059838][  T337] CR2: 00007f53d7e421d0 CR3: 0000000005e0e000 CR4: 00000000001406e0
[   20.067869][  T337] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   20.075836][  T337] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   20.083792][  T337] Call Trace:
[   20.087070][  T337]  d_walk+0x2d9/0x540
[   20.091116][  T337]  ? __d_free+0x20/0x20
[   20.095404][  T337]  shrink_dcache_for_umount+0x8a/0x1a0
[   20.100881][  T337]  generic_shutdown_super+0x63/0x2a0
[   20.106147][  T337]  kill_block_super+0x79/0xd0
[   20.110821][  T337]  deactivate_locked_super+0xaf/0x100
[   20.116168][  T337]  deactivate_super+0x1b3/0x270
[   20.121005][  T337]  ? deactivate_locked_super+0x100/0x100
[   20.126708][  T337]  ? dput+0x4de/0x5d0
[   20.130669][  T337]  ? _raw_spin_lock_irq+0xa4/0x1b0
[   20.135959][  T337]  ? find_next_bit+0xc6/0x110
[   20.140651][  T337]  cleanup_mnt+0x432/0x4e0
[   20.145046][  T337]  task_work_run+0x186/0x1b0
[   20.149616][  T337]  do_exit+0xcb9/0x2bf0
[   20.153765][  T337]  ? mm_update_next_owner+0x5c0/0x5c0
[   20.159126][  T337]  ? __up_read+0x6f/0x1b0
[   20.163729][  T337]  ? __down_read+0x210/0x210
[   20.168478][  T337]  ? check_preemption_disabled+0x154/0x330
[   20.174265][  T337]  ? debug_smp_processor_id+0x20/0x20
[   20.179642][  T337]  do_group_exit+0x15c/0x2c0
[   20.184224][  T337]  ? do_user_addr_fault+0x6b0/0xb40
[   20.189486][  T337]  __do_sys_exit_group+0x13/0x20
[   20.194406][  T337]  __se_sys_exit_group+0x10/0x10
[   20.199356][  T337]  __x64_sys_exit_group+0x37/0x40
[   20.204491][  T337]  do_syscall_64+0xcb/0x1e0
[   20.209022][  T337]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   20.214888][  T337] RIP: 0033:0x7f53d7dcd029
[   20.219477][  T337] Code: Bad RIP value.
[   20.223603][  T337] RSP: 002b:00007ffd542d21e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   20.231983][  T337] RAX: ffffffffffffffda RBX: 00007f53d7e41330 RCX: 00007f53d7dcd029
[   20.240105][  T337] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
[   20.248257][  T337] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f53d7e3be40
[   20.256386][  T337] R10: 0000000000000004 R11: 0000000000000246 R12: 00007f53d7e41330
[   20.264365][  T337] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
[   20.272327][  T337] ---[ end trace c1500b42e1555681 ]---
[    **] A start job is running for dev-ttyS0.device (13s / 1min 30s)[   20.288048][  T337] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds.  Have a nice day...