Warning: Permanently added '10.128.1.13' (ECDSA) to the list of known hosts.
[[0m[0;31m* [0m] A start job is running for dev-ttyS0.device (8s / 1min 30s)[K[[0;1;31m*[0m[0;31m* [0m] A start job is running for dev-ttyS0.device (9s / 1min 30s)[K[[0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for dev-ttyS0.device (9s / 1min 30s)[K[ [0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for dev-ttyS0.device (10s / 1min 30s)[ 19.075588][ T22] audit: type=1400 audit(1618004737.484:8): avc: denied { execmem } for pid=333 comm="syz-executor905" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[ 19.106408][ T334] FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
[ 19.118995][ T334] incfs: Can't find or create .index dir in ./file0
[ 19.126735][ T334] BUG: Dentry ffff8881efba0330{i=0,n=.index} still in use (1) [unmount of msdos loop0]
[ 19.136663][ T334] ------------[ cut here ]------------
[ 19.142142][ T334] WARNING: CPU: 1 PID: 334 at fs/dcache.c:1597 umount_check+0x179/0x1c0
[ 19.150438][ T334] Modules linked in:
[ 19.154348][ T334] CPU: 1 PID: 334 Comm: syz-executor905 Not tainted 5.4.110-syzkaller-00081-g3b217c7fd679 #0
[ 19.164697][ T334] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 19.175279][ T334] RIP: 0010:umount_check+0x179/0x1c0
[ 19.180540][ T334] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 20 f0 e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 a7 dc 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
[ 19.200449][ T334] RSP: 0018:ffff8881e9087a58 EFLAGS: 00010282
[ 19.200458][ T334] RAX: 0000000000000055 RBX: ffffffff85fc52c0 RCX: 733d96521d59bd00
[ 19.200462][ T334] RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000
[ 19.200466][ T334] RBP: ffff8881e9049420 R08: ffffffff814e8847 R09: ffffed103ede5e08
[ 19.200470][ T334] R10: ffffed103ede5e08 R11: 0000000000000000 R12: dffffc0000000000
[ 19.200475][ T334] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efba0330
[ 19.200492][ T334] FS: 00000000013e8300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
[ 19.258365][ T334] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 19.265403][ T334] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406e0
[ 19.273395][ T334] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 19.281368][ T334] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 19.289537][ T334] Call Trace:
[ 19.292835][ T334] d_walk+0x2d9/0x540
[ 19.296828][ T334] ? __d_free+0x20/0x20
[ 19.300972][ T334] shrink_dcache_for_umount+0x8a/0x1a0
[ 19.306627][ T334] generic_shutdown_super+0x63/0x2a0
[ 19.311909][ T334] kill_block_super+0x79/0xd0
[ 19.316592][ T334] deactivate_locked_super+0xaf/0x100
[ 19.321962][ T334] deactivate_super+0x1b3/0x270
[ 19.326820][ T334] ? deactivate_locked_super+0x100/0x100
[ 19.332461][ T334] ? dput+0x4de/0x5d0
[ 19.336436][ T334] ? _raw_spin_lock_irq+0xa4/0x1b0
[ 19.341533][ T334] ? find_next_bit+0xc6/0x110
[ 19.346187][ T334] cleanup_mnt+0x432/0x4e0
[ 19.350608][ T334] task_work_run+0x186/0x1b0
[ 19.355214][ T334] do_exit+0xcb9/0x2bf0
[ 19.359536][ T334] ? mm_update_next_owner+0x5c0/0x5c0
[ 19.364903][ T334] ? __up_read+0x6f/0x1b0
[ 19.369366][ T334] ? __down_read+0x210/0x210
[ 19.373940][ T334] ? check_preemption_disabled+0x154/0x330
[ 19.379738][ T334] ? debug_smp_processor_id+0x20/0x20
[ 19.385096][ T334] do_group_exit+0x15c/0x2c0
[ 19.389721][ T334] ? do_user_addr_fault+0x6b0/0xb40
[ 19.394919][ T334] __do_sys_exit_group+0x13/0x20
[ 19.399850][ T334] __se_sys_exit_group+0x10/0x10
[ 19.404817][ T334] __x64_sys_exit_group+0x37/0x40
[ 19.409834][ T334] do_syscall_64+0xcb/0x1e0
[ 19.414316][ T334] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 19.420188][ T334] RIP: 0033:0x442e39
[ 19.424065][ T334] Code: Bad RIP value.
[ 19.428104][ T334] RSP: 002b:00007ffe7f1e9658 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 19.436614][ T334] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442e39
[ 19.444671][ T334] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
[ 19.452797][ T334] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000
[ 19.460756][ T334] R10: 0000000000200004 R11: 0000000000000246 R12: 00000000004b42f0
[ 19.468721][ T334] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
[ 19.476674][ T334