[ OK ] Started Getty on tty3. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.0.251' (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 (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 (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 (13s / 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 (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)[ 24.703894][ T22] audit: type=1400 audit(1616502355.160:8): avc: denied { execmem } for pid=339 comm="syz-executor097" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 24.734012][ T341] incfs: Can't find or create .index dir in ./file0 [ 24.741338][ T341] BUG: Dentry ffff8881efa96110{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 24.751111][ T341] ------------[ cut here ]------------ [ 24.756565][ T341] WARNING: CPU: 1 PID: 341 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 24.764920][ T341] Modules linked in: [ 24.768795][ T341] CPU: 1 PID: 341 Comm: syz-executor097 Not tainted 5.4.107-syzkaller-00751-gc50ff8e5608b #0 [ 24.778903][ T341] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.788938][ T341] RIP: 0010:umount_check+0x179/0x1c0 [ 24.794191][ T341] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 60 eb e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 87 db 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 [ 24.813762][ T341] RSP: 0018:ffff8881e97a7a58 EFLAGS: 00010282 [ 24.819833][ T341] RAX: 0000000000000055 RBX: ffffffff85fc50e0 RCX: 3679cf7b26fdcc00 [ 24.827774][ T341] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 24.835728][ T341] RBP: ffff8881e97b0420 R08: ffffffff814e8887 R09: ffffed103ede5e08 [ 24.843668][ T341] R10: ffffed103ede5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 24.851608][ T341] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efa96110 [ 24.859550][ T341] FS: 00000000021353c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 24.868444][ T341] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.874996][ T341] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406e0 [ 24.882938][ T341] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.890980][ T341] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.898918][ T341] Call Trace: [ 24.902175][ T341] d_walk+0x2d9/0x540 [ 24.906136][ T341] ? __d_free+0x20/0x20 [ 24.910266][ T341] shrink_dcache_for_umount+0x8a/0x1a0 [ 24.915712][ T341] generic_shutdown_super+0x63/0x2a0 [ 24.920964][ T341] kill_block_super+0x79/0xd0 [ 24.925620][ T341] deactivate_locked_super+0xaf/0x100 [ 24.930963][ T341] deactivate_super+0x1b3/0x270 [ 24.935782][ T341] ? deactivate_locked_super+0x100/0x100 [ 24.941379][ T341] ? dput+0x4de/0x5d0 [ 24.945328][ T341] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 24.950407][ T341] ? find_next_bit+0xc6/0x110 [ 24.955076][ T341] cleanup_mnt+0x432/0x4e0 [ 24.959464][ T341] task_work_run+0x186/0x1b0 [ 24.964025][ T341] do_exit+0xcb9/0x2bf0 [ 24.968152][ T341] ? mm_update_next_owner+0x5c0/0x5c0 [ 24.973510][ T341] ? __up_read+0x6f/0x1b0 [ 24.977854][ T341] ? __down_read+0x210/0x210 [ 24.982410][ T341] ? check_preemption_disabled+0x154/0x330 [ 24.988184][ T341] ? debug_smp_processor_id+0x20/0x20 [ 24.993532][ T341] do_group_exit+0x15c/0x2c0 [ 24.998090][ T341] ? do_user_addr_fault+0x6b0/0xb40 [ 25.003258][ T341] __do_sys_exit_group+0x13/0x20 [ 25.008170][ T341] __se_sys_exit_group+0x10/0x10 [ 25.013077][ T341] __x64_sys_exit_group+0x37/0x40 [ 25.018068][ T341] do_syscall_64+0xcb/0x1e0 [ 25.022538][ T341] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 25.028399][ T341] RIP: 0033:0x4434c9 [ 25.032269][ T341] Code: Bad RIP value. [ 25.036308][ T341] RSP: 002b:00007fff2a245da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 25.044680][ T341] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 00000000004434c9 [ 25.052631][ T341] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 25.060577][ T341] RBP: 0000000000000001 R08: ffffffffffffffc4 R09: 0000000000000000 [ 25.068520][ T341] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 25.076457][ T341] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 25.084399][ T341] ---[ end trace aab110e005bbc7e6 ]--- [ 25.089931][ T341] BUG: Dentry ffff8881efa96110{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 25.099704][ T341] ------------[ cut here ]------------ [ 25.105151][ T341] WARNING: CPU: 1 PID: 341 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 25.113443][ T341] Modules linked in: [ 25.117308][ T341] CPU: 1 PID: 341 Comm: syz-executor097 Tainted: G W 5.4.107-syzkaller-00751-gc50ff8e5608b #0 [ 25.128806][ T341] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.138834][ T341] RIP: 0010:umount_check+0x179/0x1c0 [ 25.144103][ T341] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 60 eb e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 87 db 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 [ 25.163715][ T341] RSP: 0018:ffff8881e97a7a58 EFLAGS: 00010282 [ 25.169784][ T341] RAX: 0000000000000055 RBX: ffffffff85fc50e0 RCX: 3679cf7b26fdcc00 [ 25.177809][ T341] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 25.185745][ T341] RBP: ffff8881e97b0420 R08: ffffffff814e8887 R09: ffffed103ede5e08 [ 25.193682][ T341] R10: ffffed103ede5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 25.201622][ T341] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efa96110 [ 25.209562][ T341] FS: 00000000021353c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 25.218456][ T341] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.225004][ T341] CR2: 000000000044349f CR3: 0000000005e0e000 CR4: 00000000001406e0 [ 25.232944][ T341] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.240883][ T341] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.248820][ T341] Call Trace: [ 25.252078][ T341] d_walk+0x2d9/0x540 [ 25.256026][ T341] ? __d_free+0x20/0x20 [ 25.260149][ T341] shrink_dcache_for_umount+0x8a/0x1a0 [ 25.265575][ T341] generic_shutdown_super+0x63/0x2a0 [ 25.270824][ T341] kill_block_super+0x79/0xd0 [ 25.275481][ T341] deactivate_locked_super+0xaf/0x100 [ 25.280818][ T341] deactivate_super+0x1b3/0x270 [ 25.285633][ T341] ? deactivate_locked_super+0x100/0x100 [ 25.291254][ T341] ? dput+0x4de/0x5d0 [ 25.295201][ T341] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 25.300278][ T341] ? find_next_bit+0xc6/0x110 [ 25.304921][ T341] cleanup_mnt+0x432/0x4e0 [ 25.309319][ T341] task_work_run+0x186/0x1b0 [ 25.309328][ T341] do_exit+0xcb9/0x2bf0 [ 25.309340][ T341] ? mm_update_next_owner+0x5c0/0x5c0 [ 25.323400][ T341] ? __up_read+0x6f/0x1b0 [ 25.327707][ T341] ? __down_read+0x210/0x210 [ 25.332276][ T341] ? check_preemption_disabled+0x154/0x330 [ 25.338089][ T341] ? debug_smp_processor_id+0x20/0x20 [ 25.343455][ T341] do_group_exit+0x15c/0x2c0 [ 25.348026][ T341] ? do_user_addr_fault+0x6b0/0xb40 [ 25.353541][ T341] __do_sys_exit_group+0x13/0x20 [ 25.358472][ T341] __se_sys_exit_group+0x10/0x10 [ 25.363394][ T341] __x64_sys_exit_group+0x37/0x40 [ 25.368413][ T341] do_syscall_64+0xcb/0x1e0 [ 25.372899][ T341] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ *[0;1;[ 25.378770][ T341] RIP: 0033:0x4434c9 31m**[ 25.384034][ T341] Code: Bad RIP value. [ 25.389457][ T341] RSP: 002b:00007fff2a245da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 25.397850][ T341] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 00000000004434c9 [ 25.405803][ T341] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 25.413766][ T341] RBP: 0000000000000001 R08: ffffffffffffffc4 R09: 0000000000000000 [ 25.421719][ T341] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 25.429680][ T341] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 25.437724][ T341] ---[ end trace aab110e005bbc7e7 ]--- ] A start job is running f[ 25.444872][ T341] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... or dev-ttyS0.device (18s / 1min 30s)