Warning: Permanently added '10.128.1.106' (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 (11s / 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 (12s / 1min 30s)[ 20.290111][ T22] audit: type=1400 audit(1633331147.129:8): avc: denied { execmem } for pid=341 comm="syz-executor115" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ ***] A start job is running for dev-ttyS0.device (13s / 1min 30s)[ 20.320897][ T343] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 20.330378][ T343] EXT4-fs error (device loop0): __ext4_new_inode:930: comm syz-executor115: reserved inode found cleared - inode=1 [ 20.342791][ T343] incfs: Can't find or create .index dir in ./file0 [ 20.350320][ T343] BUG: Dentry ffff8881ecb48550{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ 20.360044][ T343] ------------[ cut here ]------------ [ 20.365484][ T343] WARNING: CPU: 0 PID: 343 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 20.373787][ T343] Modules linked in: [ 20.377654][ T343] CPU: 0 PID: 343 Comm: syz-executor115 Not tainted 5.4.125-syzkaller-00030-g1e429b8f9eb9 #0 [ 20.387770][ T343] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.397799][ T343] RIP: 0010:umount_check+0x179/0x1c0 [ 20.403085][ T343] 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 07 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 [ 20.422674][ T343] RSP: 0018:ffff8881e5b87a58 EFLAGS: 00010282 [ 20.428710][ T343] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: 571132025486f300 [ 20.436652][ T343] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 20.444599][ T343] RBP: ffff8881ee67e420 R08: ffffffff814e90e7 R09: ffffed103edc9608 [ 20.452538][ T343] R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 [ 20.460484][ T343] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecb48550 [ 20.468433][ T343] FS: 0000555556b88300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 20.477327][ T343] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.484051][ T343] CR2: 00007f8212ae71d0 CR3: 0000000005e0e000 CR4: 00000000003406f0 [ 20.491992][ T343] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.499934][ T343] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.507870][ T343] Call Trace: [ 20.511131][ T343] d_walk+0x2d9/0x540 [ 20.515080][ T343] ? __d_free+0x20/0x20 [ 20.519208][ T343] shrink_dcache_for_umount+0x8a/0x1a0 [ 20.524636][ T343] generic_shutdown_super+0x63/0x2a0 [ 20.529887][ T343] kill_block_super+0x79/0xd0 [ 20.534541][ T343] deactivate_locked_super+0xaf/0x100 [ 20.539967][ T343] deactivate_super+0x1b3/0x270 [ 20.544782][ T343] ? deactivate_locked_super+0x100/0x100 [ 20.550379][ T343] ? dput+0x4de/0x5d0 [ 20.554329][ T343] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 20.559418][ T343] ? find_next_bit+0xc6/0x110 [ 20.564065][ T343] cleanup_mnt+0x432/0x4e0 [ 20.568446][ T343] task_work_run+0x186/0x1b0 [ 20.573002][ T343] do_exit+0xcb9/0x2bf0 [ 20.577134][ T343] ? mm_update_next_owner+0x5c0/0x5c0 [ 20.582473][ T343] ? __up_read+0x6f/0x1b0 [ 20.586771][ T343] ? __down_read+0x210/0x210 [ 20.591329][ T343] ? check_preemption_disabled+0x154/0x330 [ 20.597104][ T343] ? debug_smp_processor_id+0x20/0x20 [ 20.602443][ T343] do_group_exit+0x15c/0x2c0 [ 20.607002][ T343] ? do_user_addr_fault+0x6b0/0xb40 [ 20.612176][ T343] __do_sys_exit_group+0x13/0x20 [ 20.617167][ T343] __se_sys_exit_group+0x10/0x10 [ 20.622172][ T343] __x64_sys_exit_group+0x37/0x40 [ 20.627171][ T343] do_syscall_64+0xcb/0x1e0 [ 20.631731][ T343] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.637587][ T343] RIP: 0033:0x7f8212a720f9 [ 20.641969][ T343] Code: Bad RIP value. [ 20.646002][ T343] RSP: 002b:00007ffdcbe4f878 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 20.654391][ T343] RAX: ffffffffffffffda RBX: 00007f8212ae6330 RCX: 00007f8212a720f9 [ 20.662424][ T343] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 20.670365][ T343] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f8212ae0e40 [ 20.678306][ T343] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8212ae6330 [ 20.686265][ T343] R13: 0000000000000001 R14: 000000000000000