Warning: Permanently added '10.128.0.193' (ECDSA) to the list of known hosts. [* ] 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 (12s / 1min 30s)[ *] A start job is running for dev-ttyS0.device (12s / 1min 30s)[ 19.454804][ T22] audit: type=1400 audit(1632563880.950:8): avc: denied { execmem } for pid=333 comm="syz-executor150" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 19.487116][ T336] FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) [ 19.497135][ T336] incfs: Can't find or create .index dir in ./file0 [ 19.511414][ T336] BUG: Dentry ffff8881ec9febb0{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 19.521278][ T336] ------------[ cut here ]------------ [ 19.526725][ T336] WARNING: CPU: 0 PID: 336 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 19.535010][ T336] Modules linked in: [ 19.538878][ T336] CPU: 0 PID: 336 Comm: syz-executor150 Not tainted 5.4.125-syzkaller-00010-g1a97657426d5 #0 [ 19.548987][ T336] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.559031][ T336] RIP: 0010:umount_check+0x179/0x1c0 [ 19.564283][ T336] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 e0 09 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 [ 19.583853][ T336] RSP: 0000:ffff8881e570f738 EFLAGS: 00010282 [ 19.589898][ T336] RAX: 0000000000000055 RBX: ffffffff85fc6160 RCX: 0b898e6d20467d00 [ 19.598010][ T336] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 19.605950][ T336] RBP: ffff8881ee104420 R08: ffffffff814e90d7 R09: ffffed103edc9608 [ 19.613890][ T336] R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 [ 19.621827][ T336] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ec9febb0 [ 19.629770][ T336] FS: 00007fd4ded1c700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 19.639098][ T336] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.645648][ T336] CR2: 0000559942aeba70 CR3: 0000000005e0e000 CR4: 00000000001406f0 [ 19.653600][ T336] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.661758][ T336] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.669704][ T336] Call Trace: [ 19.673319][ T336] d_walk+0x2d9/0x540 [ 19.677276][ T336] ? __d_free+0x20/0x20 [ 19.681399][ T336] shrink_dcache_for_umount+0x8a/0x1a0 [ 19.686827][ T336] generic_shutdown_super+0x63/0x2a0 [ 19.692144][ T336] kill_block_super+0x79/0xd0 [ 19.697073][ T336] deactivate_locked_super+0xaf/0x100 [ 19.702439][ T336] deactivate_super+0x1b3/0x270 [ 19.707262][ T336] ? deactivate_locked_super+0x100/0x100 [ 19.712956][ T336] ? dput+0x4de/0x5d0 [ 19.716926][ T336] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.722017][ T336] ? find_next_bit+0xc6/0x110 [ 19.726860][ T336] cleanup_mnt+0x432/0x4e0 [ 19.731250][ T336] task_work_run+0x186/0x1b0 [ 19.735824][ T336] do_exit+0xcb9/0x2bf0 [ 19.739952][ T336] ? mm_update_next_owner+0x5c0/0x5c0 [ 19.745293][ T336] ? debug_smp_processor_id+0x20/0x20 [ 19.750638][ T336] ? stack_trace_snprint+0x150/0x150 [ 19.755922][ T336] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.761098][ T336] ? _raw_spin_lock_irqsave+0x210/0x210 [ 19.767185][ T336] do_group_exit+0x15c/0x2c0 [ 19.772659][ T336] get_signal+0x164f/0x1fc0 [ 19.777385][ T336] ? ptrace_notify+0x340/0x340 [ 19.782289][ T336] do_signal+0x8d/0x610 [ 19.787039][ T336] ? ksys_mount+0xe0/0xf0 [ 19.791345][ T336] ? kfree+0xe0/0x660 [ 19.795313][ T336] ? signal_fault+0x1e0/0x1e0 [ 19.799967][ T336] ? ksys_mount+0xe0/0xf0 [ 19.804269][ T336] ? __x64_sys_futex+0x1d/0xf0 [ 19.809011][ T336] prepare_exit_to_usermode+0x207/0x310 [ 19.814543][ T336] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 19.820409][ T336] RIP: 0033:0x7fd4ded6f039 [ 19.824798][ T336] Code: Bad RIP value. [ 19.828838][ T336] RSP: 002b:00007fd4ded1c308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 19.837233][ T336] RAX: fffffffffffffe00 RBX: 00007fd4dedf33e8 RCX: 00007fd4ded6f039 [ 19.845187][ T336] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd4dedf33e8 [ 19.853131][ T336] RBP: 00007fd4dedf33e0 R08: 0000000000000000 R09: 0000000000000000 [ 19.861075][ T336] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd4dedf33ec [ 19.869140][ T336] R13: 0030656c69662f2e R14: 6e656d6572636e69 R15: 0000000000022000 [ 19.877086][ T336] ---[ end trace a9193536ba1ac42d ]--- [ 19.883819][ T336] BUG: Dentry ffff8881ec9febb0{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 19.893631][ T336] ------------[ cut here ]------------ [ 19.899094][ T336] WARNING: CPU: 0 PID: 336 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 19.899097][ T336] Modules linked in: [ 19.899110][ T336] CPU: 0 PID: 336 Comm: syz-executor150 Tainted: G W 5.4.125-syzkaller-00010-g1a97657426d5 #0 [ 19.899119][ T336] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.933897][ T336] RIP: 0010:umount_check+0x179/0x1c0 [ 19.939429][ T336] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 e0 09 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 [ 19.959485][ T336] RSP: 0018:ffff8881e570f738 EFLAGS: 00010282 [ 19.965960][ T336] RAX: 0000000000000055 RBX: ffffffff85fc6160 RCX: 0b898e6d20467d00 [ 19.974025][ T336] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 19.982157][ T336] RBP: ffff8881ee104420 R08: ffffffff814e90d7 R09: ffffed103edc9608 [ 19.990230][ T336] R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 [ 19.998203][ T336] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ec9febb0 [ 20.006301][ T336] FS: 00007fd4ded1c700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 20.015715][ T336] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.022794][ T336] CR2: 00007fd4ded6f00f CR3: 00000001de37d000 CR4: 00000000001406f0 [ 20.031039][ T336] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.039584][ T336] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.047945][ T336] Call Trace: [ 20.051300][ T336] d_walk+0x2d9/0x540 [ 20.055270][ T336] ? __d_free+0x20/0x20 [ 20.059523][ T336] shrink_dcache_for_umount+0x8a/0x1a0 [ [ 20.065239][ T336] generic_shutdown_super+0x63/0x2a0 [ 20.071894][ T336] kill_block_super+0x79/0xd0 **][ 20.076695][ T336] deactivate_locked_super+0xaf/0x100 [ 20.083512][ T336] deactivate_super+0x1b3/0x270 [ 20.088797][ T336] ? deactivate_locked_super+0x100/0x100 A start job is [ 20.094418][ T336] ? dput+0x4de/0x5d0 [ 20.099760][ T336] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 20.104853][ T336] ? find_next_bit+0xc6/0x110 running for dev-[ 20.109517][ T336] cleanup_mnt+0x432/0x4e0 ttyS0.device (13[ 20.115303][ T336] task_work_run+0x186/0x1b0 [ 20.121345][ T336] do_exit+0xcb9/0x2bf0 [ 20.125493][ T336] ? mm_update_next_owner+0x5c0/0x5c0 s / 1min 30s)[ 20.130858][ T336] ? debug_smp_processor_id+0x20/0x20 [ 20.137325][ T336] ? stack_trace_snprint+0x150/0x150 [ 20.142599][ T336] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 20.147767][ T336] ? _raw_spin_lock_irqsave+0x210/0x210 [ 20.153405][ T336] do_group_exit+0x15c/0x2c0 [ 20.157979][ T336] get_signal+0x164f/0x1fc0 [ 20.162805][ T336] ? ptrace_notify+0x340/0x340 [ 20.167638][ T336] do_signal+0x8d/0x610 [ 20.171854][ T336] ? ksys_mount+0xe0/0xf0 [ 20.176166][ T336] ? kfree+0xe0/0x660 [ 20.180124][ T336] ? signal_fault+0x1e0/0x1e0 [ 20.184780][ T336] ? ksys_mount+0xe0/0xf0 [ 20.189100][ T336] ? __x64_sys_futex+0x1d/0xf0 [ 20.194324][ T336] prepare_exit_to_usermode+0x207/0x310 [ 20.199975][ T336] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.205959][ T336] RIP: 0033:0x7fd4ded6f039 [ 20.210352][ T336] Code: Bad RIP value. [ 20.214515][ T336] RSP: 002b:00007fd4ded1c308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 20.222901][ T336] RAX: fffffffffffffe00 RBX: 00007fd4dedf33e8 RCX: 00007fd4ded6f039 [ 20.230847][ T336] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd4dedf33e8 [ 20.238821][ T336] RBP: 00007fd4dedf33e0 R08: 0000000000000000 R09: 0000000000000000 [ 20.246777][ T336] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd4dedf33ec [ 20.254742][ T336] R13: 0030656c69662f2e R14: 6e656d6572636e69 R15: 0000000000022000 [ 20.262689][ T336] ---[ end trace a9193536ba1ac42e ]--- [ 20.270336][ T336] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day...