Warning: Permanently added '10.128.0.172' (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 (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)[ 21.198132][ T22] audit: type=1400 audit(1628591464.375:8): avc: denied { execmem } for pid=336 comm="syz-executor952" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 21.239407][ T339] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 21.249044][ T339] EXT4-fs error (device loop0): __ext4_new_inode:930: comm syz-executor952: reserved inode found cleared - inode=1 [ 21.262182][ T339] incfs: Can't find or create .index dir in ./file0 [ 21.270543][ T339] BUG: Dentry ffff8881ec9c7bb0{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ 21.280219][ T339] ------------[ cut here ]------------ [ 21.285658][ T339] WARNING: CPU: 0 PID: 339 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 21.293946][ T339] Modules linked in: [ 21.297814][ T339] CPU: 0 PID: 339 Comm: syz-executor952 Not tainted 5.4.125-syzkaller-00003-gbef9107dccf3 #0 [ 21.308010][ T339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 21.318058][ T339] RIP: 0010:umount_check+0x179/0x1c0 [ 21.323322][ T339] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 a0 0a 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 [ 21.323327][ T339] RSP: 0018:ffff8881e60e7738 EFLAGS: 00010282 [ 21.323334][ T339] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: f9092d4b66f7f400 [ 21.323344][ T339] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 21.364854][ T339] RBP: ffff8881f0a5a420 R08: ffffffff814e90d7 R09: ffffed103edc9608 [ 21.372832][ T339] R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 [ 21.380783][ T339] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ec9c7bb0 [ 21.388741][ T339] FS: 00007f3cb9d8e700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 21.397669][ T339] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.404232][ T339] CR2: 00000000004d15c0 CR3: 00000001ec10c000 CR4: 00000000001406f0 [[ 21.412191][ T339] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.420570][ T339] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.428585][ T339] Call Trace: *[0;1[ 21.431901][ T339] d_walk+0x2d9/0x540 [ 21.437251][ T339] ? __d_free+0x20/0x20 ;31m*[ 21.441386][ T339] shrink_dcache_for_umount+0x8a/0x1a0 [ 21.448210][ T339] generic_shutdown_super+0x63/0x2a0 [ 21.453477][ T339] kill_block_super+0x79/0xd0 *] [ 21.458131][ T339] deactivate_locked_super+0xaf/0x100 [ 21.464076][ T339] deactivate_super+0x1b3/0x270 A start job is r[ 21.468913][ T339] ? deactivate_locked_super+0x100/0x100 [ 21.475902][ T339] ? dput+0x4de/0x5d0 unning for dev-t[ 21.479866][ T339] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 21.486347][ T339] ? find_next_bit+0xc6/0x110 tyS0.device (13s[ 21.491005][ T339] cleanup_mnt+0x432/0x4e0 [ 21.496782][ T339] task_work_run+0x186/0x1b0 / 1min 30s)[ 21.501365][ T339] do_exit+0xcb9/0x2bf0 [ 21.506533][ T339] ? mm_update_next_owner+0x5c0/0x5c0 [ 21.511878][ T339] ? debug_smp_processor_id+0x20/0x20 [ 21.517214][ T339] ? stack_trace_snprint+0x150/0x150 [ 21.522465][ T339] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 21.527543][ T339] ? _raw_spin_lock_irqsave+0x210/0x210 [ 21.533068][ T339] do_group_exit+0x15c/0x2c0 [ 21.537626][ T339] get_signal+0x164f/0x1fc0 [ 21.542101][ T339] ? ptrace_notify+0x340/0x340 [ 21.546832][ T339] ? check_preemption_disabled+0x154/0x330 [ 21.552604][ T339] do_signal+0x8d/0x610 [ 21.556729][ T339] ? kfree+0xe0/0x660 [ 21.560679][ T339] ? signal_fault+0x1e0/0x1e0 [ 21.565325][ T339] ? ksys_mount+0xe0/0xf0 [ 21.569618][ T339] ? __x64_sys_futex+0x1d/0xf0 [ 21.574349][ T339] prepare_exit_to_usermode+0x207/0x310 [ 21.579863][ T339] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 21.585720][ T339] RIP: 0033:0x44a099 [ 21.589584][ T339] Code: Bad RIP value. [ 21.593619][ T339] RSP: 002b:00007f3cb9d8e2f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 21.602008][ T339] RAX: fffffffffffffe00 RBX: 00000000004cb400 RCX: 000000000044a099 [ 21.609945][ T339] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cb408 [ 21.617884][ T339] RBP: 00000000004cb40c R08: 0000000000000000 R09: 0000000000000000 [ 21.625823][ T339] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 21.634284][ T339] R13: e5d26e84aa4cf3c6 R14: 6e656d6572636e69 R15: 000000000