Warning: Permanently added '10.128.1.72' (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 (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)[ 18.970973][ T22] audit: type=1400 audit(1616930544.816:8): avc: denied { execmem } for pid=335 comm="syz-executor848" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 19.005459][ T341] incfs: Can't find or create .index dir in ./file0 [ 19.013114][ T341] BUG: Dentry ffff8881efb84000{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 19.023623][ T341] ------------[ cut here ]------------ [ 19.029074][ T341] WARNING: CPU: 0 PID: 341 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 19.037362][ T341] Modules linked in: [ 19.041233][ T341] CPU: 0 PID: 341 Comm: syz-executor848 Not tainted 5.4.108-syzkaller-00846-g7af03784d889 #0 [ 19.051342][ T341] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.061393][ T341] RIP: 0010:umount_check+0x179/0x1c0 [ 19.066645][ T341] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 20 f1 e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 37 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 [ 19.086215][ T341] RSP: 0018:ffff8881e8d0f738 EFLAGS: 00010282 [ 19.092246][ T341] RAX: 0000000000000055 RBX: ffffffff85fc5100 RCX: be0f3270e1e68c00 [ 19.100184][ T341] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 19.108121][ T341] RBP: ffff8881f167c420 R08: ffffffff814e8847 R09: ffffed103edc5e08 [ 19.116214][ T341] R10: ffffed103edc5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 19.124160][ T341] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efb84000 [ 19.132105][ T341] FS: 00007fb6d54c3700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 19.141132][ T341] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.147682][ T341] CR2: 00000000004d15c0 CR3: 0000000005e0e000 CR4: 00000000001406f0 [ 19.155660][ T341] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.163600][ T341] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.171537][ T341] Call Trace: [ 19.174798][ T341] d_walk+0x2d9/0x540 [ 19.178750][ T341] ? __d_free+0x20/0x20 [ 19.182873][ T341] shrink_dcache_for_umount+0x8a/0x1a0 [ 19.188296][ T341] generic_shutdown_super+0x63/0x2a0 [ 19.193560][ T341] kill_block_super+0x79/0xd0 [ 19.198219][ T341] deactivate_locked_super+0xaf/0x100 [ 19.203573][ T341] deactivate_super+0x1b3/0x270 [ 19.208436][ T341] ? deactivate_locked_super+0x100/0x100 [ 19.214038][ T341] ? dput+0x4de/0x5d0 [ 19.218026][ T341] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.223144][ T341] ? find_next_bit+0xc6/0x110 [ 19.227799][ T341] cleanup_mnt+0x432/0x4e0 [ 19.232182][ T341] task_work_run+0x186/0x1b0 [ 19.236741][ T341] do_exit+0xcb9/0x2bf0 [ 19.240869][ T341] ? mm_update_next_owner+0x5c0/0x5c0 [ 19.246207][ T341] ? debug_smp_processor_id+0x20/0x20 [ 19.251545][ T341] ? stack_trace_snprint+0x150/0x150 [ 19.256795][ T341] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.261874][ T341] ? _raw_spin_lock_irqsave+0x210/0x210 [ 19.267387][ T341] do_group_exit+0x15c/0x2c0 [ 19.271953][ T341] get_signal+0x164f/0x1fc0 [ 19.276425][ T341] ? ptrace_notify+0x340/0x340 [ 19.281157][ T341] ? check_preemption_disabled+0x154/0x330 [ 19.286936][ T341] do_signal+0x8d/0x610 [ 19.291059][ T341] ? kfree+0xe0/0x660 [ 19.295005][ T341] ? signal_fault+0x1e0/0x1e0 [ 19.299649][ T341] ? ksys_mount+0xe0/0xf0 [ 19.303945][ T341] ? __x64_sys_futex+0x1d/0xf0 [ 19.308787][ T341] prepare_exit_to_usermode+0x207/0x310 [ 19.314298][ T341] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 19.320158][ T341] RIP: 0033:0x44a479 [ 19.324038][ T341] Code: Bad RIP value. [ 19.328084][ T341] RSP: 002b:00007fb6d54c3218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 19.336603][ T341] RAX: 0000000000000001 RBX: 00000000004cb418 RCX: 000000000044a479 [ 19.344551][ T341] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00000000004cb41c [ 19.352493][ T341] RBP: 00000000004cb410 R08: 0000000000000000 R09: 0000000000000000 [ 19.360435][ T341] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb41c [ 19.368375][ T341] R13: 00007ffeae96230f R14: 00007fb6d54c3300 R15: 0000000000022000 [ 19.376322][ T341] ---[ end trace 96261789af7d1562 ]--- [ [ 19.383346][ T341] BUG: Dentry ffff8881efb84000{i=0,n=.index} still in use (1) [unmount of msdos loop0] **][ 19.394723][ T341] ------------[ cut here ]------------ [ 19.401165][ T341] WARNING: CPU: 0 PID: 341 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 19.409463][ T341] Modules linked in: [ 19.413347][ T341] CPU: 0 PID: 341 Comm: syz-executor848 Tainted: G W 5.4.108-syzkaller-00846-g7af03784d889 #0 A start job is [ 19.424900][ T341] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.436585][ T341] RIP: 0010:umount_check+0x179/0x1c0 [ 19.441864][ T341] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 20 f1 e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 37 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 running for dev-[ 19.461449][ T341] RSP: 0018:ffff8881e8d0f738 EFLAGS: 00010282 [ 19.468877][ T341] RAX: 0000000000000055 RBX: ffffffff85fc5100 RCX: be0f3270e1e68c00 [ 19.476831][ T341] RDX: 0000000000000000 RSI: 0000000080000003 RDI: 0000000000000000 [ 19.484786][ T341] RBP: ffff8881f167c420 R08: ffffffff814e8847 R09: ffffed103edc5e08 ttyS0.device (12[ 19.492752][ T341] R10: ffffed103edc5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 19.502093][ T341] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efb84000 [ 19.510054][ T341] FS: 00007fb6d54c3700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 19.518961][ T341] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.525634][ T341] CR2: 000000000044a44f CR3: 00000001f1037000 CR4: 00000000001406f0 s / 1min 30s)[ 19.533591][ T341] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.542665][ T341] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.550610][ T341] Call Trace: [ 19.553900][ T341] d_walk+0x2d9/0x540 [ 19.557858][ T341] ? __d_free+0x20/0x20 [ 19.561983][ T341] shrink_dcache_for_umount+0x8a/0x1a0 [ 19.567419][ T341] generic_shutdown_super+0x63/0x2a0 [ 19.572670][ T341] kill_block_super+0x79/0xd0 [ 19.577315][ T341] deactivate_locked_super+0xaf/0x100 [ 19.582662][ T341] deactivate_super+0x1b3/0x270 [ 19.587481][ T341] ? deactivate_locked_super+0x100/0x100 [ 19.593078][ T341] ? dput+0x4de/0x5d0 [ 19.597025][ T341] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.602110][ T341] ? find_next_bit+0xc6/0x110 [ 19.606754][ T341] cleanup_mnt+0x432/0x4e0 [ 19.611150][ T341] task_work_run+0x186/0x1b0 [ 19.615706][ T341] do_exit+0xcb9/0x2bf0 [ 19.619838][ T341] ? mm_update_next_owner+0x5c0/0x5c0 [ 19.625175][ T341] ? debug_smp_processor_id+0x20/0x20 [ 19.630512][ T341] ? stack_trace_snprint+0x150/0x150 [ 19.635766][ T341] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.640843][ T341] ? _raw_spin_lock_irqsave+0x210/0x210 [ 19.646354][ T341] do_group_exit+0x15c/0x2c0 [ 19.650910][ T341] get_signal+0x164f/0x1fc0 [ 19.655382][ T341] ? ptrace_notify+0x340/0x340 [ 19.660113][ T341] ? check_preemption_disabled+0x154/0x330 [ 19.665899][ T341] do_signal+0x8d/0x610 [ 19.670034][ T341] ? kfree+0xe0/0x660 [ 19.673984][ T341] ? signal_fault+0x1e0/0x1e0 [ 19.678625][ T341] ? ksys_mount+0xe0/0xf0 [ 19.682919][ T341] ? __x64_sys_futex+0x1d/0xf0 [ 19.687662][ T341] prepare_exit_to_usermode+0x207/0x310 [ 19.693173][ T341] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 19.699039][ T341] RIP: 0033:0x44a479 [ 19.702913][ T341] Code: Bad RIP value. [ 19.706944][ T341] RSP: 002b:00007fb6d54c3218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 19.715317][ T341] RAX: 0000000000000001 RBX: 00000000004cb418 RCX: 000000000044a479 [ 19.723266][ T341] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00000000004cb41c [ 19.731204][ T341] RBP: 00000000004cb410 R08: 0000000000000000 R09: 0000000000000000 [ 19.739155][ T341] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb41c [ 19.747092][ T341] R13: 00007ffeae96230f R14: 00007fb6d54c3300 R15: 0000000000022000 [ 19.755032][ T341] ---[ end trace 96261789af7d1563 ]--- [ 19.761713][ T341] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day...