Warning: Permanently added '10.128.10.51' (ECDSA) to the list of known hosts. executing program [ ***] 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 (14s / 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)[** ] A start job is running for dev-ttyS0.device (16s / 1min 30s)[* ] A start job is running for dev-ttyS0.device (16s / 1min 30s)[** ] A start job is running for dev-ttyS0.device (17s / 1min 30s)[*** ] A start job is running for dev-ttyS0.device (17s / 1min 30s)[ *** ] A start job is running for dev-ttyS0.device (18s / 1min 30s)[ *** ] A start job is running for dev-ttyS0.device (18s / 1min 30s)[ ***] A start job is running for dev-ttyS0.device (19s / 1min 30s)[ **] A start job is running for dev-ttyS0.device (19s / 1min 30s)[ *] A start job is running for dev-ttyS0.device (20s / 1min 30s)[ **] A start job is running for dev-ttyS0.device (20s / 1min 30s)[ ***] A start job is running for dev-ttyS0.device (21s / 1min 30s)[ *** ] A start job is running for dev-ttyS0.device (21s / 1min 30s)[ *** ] A start job is running for dev-ttyS0.device (22s / 1min 30s)[ 28.060580][ T22] audit: type=1400 audit(1625136671.025:8): avc: denied { execmem } for pid=335 comm="syz-executor989" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 28.089522][ T336] FAT-fs (loop0): Directory bread(block 16) failed [ 28.097067][ T336] FAT-fs (loop0): Directory bread(block 16) failed [ 28.103791][ T336] incfs: Can't find or create .index dir in ./file0 [ 28.111475][ T336] BUG: Dentry ffff8881ecfa4550{i=0,n=.index} still in use (1) [unmount of vfat loop0] [ 28.121133][ T336] ------------[ cut here ]------------ [ 28.126675][ T336] WARNING: CPU: 0 PID: 336 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 28.134964][ T336] Modules linked in: [ 28.138826][ T336] CPU: 0 PID: 336 Comm: syz-executor989 Not tainted 5.4.125-syzkaller-00237-g877ad62bde6f #0 [ 28.149193][ T336] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.159334][ T336] RIP: 0010:umount_check+0x179/0x1c0 [ 28.164584][ T336] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 60 07 e9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 57 a4 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 [ 28.184333][ T336] RSP: 0018:ffff8881e6057a58 EFLAGS: 00010282 [ 28.190449][ T336] RAX: 0000000000000054 RBX: ffffffff85fc5d00 RCX: 5d2b332d76662c00 [ 28.198385][ T336] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 28.206323][ T336] RBP: ffff8881ed2a7420 R08: ffffffff814e90a7 R09: ffffed103edc5e08 [ 28.214259][ T336] R10: ffffed103edc5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 28.222199][ T336] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecfa4550 [ 28.230141][ T336] FS: 000000000245d300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 28.239033][ T336] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.245593][ T336] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406f0 [ 28.253530][ T336] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.261481][ T336] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.269416][ T336] Call Trace: [ 28.272679][ T336] d_walk+0x2d9/0x540 [ 28.276628][ T336] ? __d_free+0x20/0x20 [ 28.280893][ T336] shrink_dcache_for_umount+0x8a/0x1a0 [ 28.286326][ T336] generic_shutdown_super+0x63/0x2a0 [ 28.291596][ T336] kill_block_super+0x79/0xd0 [ 28.296676][ T336] deactivate_locked_super+0xaf/0x100 [ 28.302043][ T336] deactivate_super+0x1b3/0x270 [ 28.307134][ T336] ? deactivate_locked_super+0x100/0x100 [ 28.312736][ T336] ? dput+0x4de/0x5d0 [ 28.316687][ T336] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 28.321865][ T336] ? find_next_bit+0xc6/0x110 [ 28.326603][ T336] cleanup_mnt+0x432/0x4e0 [ 28.331000][ T336] task_work_run+0x186/0x1b0 [ 28.335582][ T336] do_exit+0xcb9/0x2bf0 [ 28.339711][ T336] ? mm_update_next_owner+0x5c0/0x5c0 [ 28.345053][ T336] ? __up_read+0x6f/0x1b0 [ 28.349625][ T336] ? __down_read+0x210/0x210 [ 28.354186][ T336] ? check_preemption_disabled+0x154/0x330 [ 28.359960][ T336] ? debug_smp_processor_id+0x20/0x20 [ 28.365479][ T336] do_group_exit+0x15c/0x2c0 [ 28.370039][ T336] ? do_user_addr_fault+0x6b0/0xb40 [ 28.375466][ T336] __do_sys_exit_group+0x13/0x20 [ 28.380647][ T336] __se_sys_exit_group+0x10/0x10 [ 28.385646][ T336] __x64_sys_exit_group+0x37/0x40 [ 28.390670][ T336] do_syscall_64+0xcb/0x1e0 [ 28.395143][ T336] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 28.401014][ T336] RIP: 0033:0x442e09 [ 28.404894][ T336] Code: Bad RIP value. [ 28.408929][ T336] RSP: 002b:00007ffe9ae3d5e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 28.417320][ T336] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442e09 [ 28.417324][ T336] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 28.417328][ T336] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 28.417336][ T336] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 28.417341][ T336] R13: 0000000000000001 R14: 0000000000000000 R15: 00000