Starting Permit User Sessions... [ OK ] Started Permit User Sessions. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty1. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.0.127' (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 (11s / 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)[ 20.834119][ T22] audit: type=1400 audit(1616567367.250:8): avc: denied { execmem } for pid=336 comm="syz-executor602" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 20.862494][ T338] incfs: Can't find or create .index dir in ./file0 [ 20.870059][ T338] BUG: Dentry ffff8881efaa0aa0{i=0,n=.index} still in use (1) [unmount of vfat loop0] [ 20.879766][ T338] ------------[ cut here ]------------ [ 20.885214][ T338] WARNING: CPU: 0 PID: 338 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 20.893769][ T338] Modules linked in: [ 20.897639][ T338] CPU: 0 PID: 338 Comm: syz-executor602 Not tainted 5.4.107-syzkaller-00751-gc50ff8e5608b #0 [ 20.907751][ T338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.917874][ T338] RIP: 0010:umount_check+0x179/0x1c0 [ 20.923128][ T338] 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 [ 20.942787][ T338] RSP: 0018:ffff8881e95c7a58 EFLAGS: 00010282 [ 20.948822][ T338] RAX: 0000000000000054 RBX: ffffffff85fc4dc0 RCX: 47f31a60fd3f7e00 [ 20.956763][ T338] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 20.964703][ T338] RBP: ffff8881f5290420 R08: ffffffff814e8887 R09: ffffed103edc5e08 [ 20.972642][ T338] R10: ffffed103edc5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 20.980599][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efaa0aa0 [ 20.988541][ T338] FS: 00000000013fa300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 20.997458][ T338] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.004023][ T338] CR2: 00000000004b6290 CR3: 0000000005e0e000 CR4: 00000000001406f0 [ 21.011979][ T338] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.019918][ T338] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.027917][ T338] Call Trace: [ 21.031188][ T338] d_walk+0x2d9/0x540 [ 21.035146][ T338] ? __d_free+0x20/0x20 [ 21.039273][ T338] shrink_dcache_for_umount+0x8a/0x1a0 [ 21.044716][ T338] generic_shutdown_super+0x63/0x2a0 [ 21.049975][ T338] kill_block_super+0x79/0xd0 [ 21.054645][ T338] deactivate_locked_super+0xaf/0x100 [ 21.059993][ T338] deactivate_super+0x1b3/0x270 [ 21.064812][ T338] ? deactivate_locked_super+0x100/0x100 [ 21.070410][ T338] ? dput+0x4de/0x5d0 [ 21.074359][ T338] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 21.079436][ T338] ? find_next_bit+0xc6/0x110 [ 21.084082][ T338] cleanup_mnt+0x432/0x4e0 [ 21.088467][ T338] task_work_run+0x186/0x1b0 [ 21.093030][ T338] do_exit+0xcb9/0x2bf0 [ 21.097157][ T338] ? mm_update_next_owner+0x5c0/0x5c0 [ 21.102494][ T338] ? __up_read+0x6f/0x1b0 [ 21.106789][ T338] ? __down_read+0x210/0x210 [ 21.111346][ T338] ? check_preemption_disabled+0x154/0x330 [ 21.117123][ T338] ? debug_smp_processor_id+0x20/0x20 [ 21.122463][ T338] do_group_exit+0x15c/0x2c0 [ 21.127046][ T338] ? do_user_addr_fault+0x6b0/0xb40 [ 21.132224][ T338] __do_sys_exit_group+0x13/0x20 [ 21.137137][ T338] __se_sys_exit_group+0x10/0x10 [ 21.142064][ T338] __x64_sys_exit_group+0x37/0x40 [ 21.147064][ T338] do_syscall_64+0xcb/0x1e0 [ 21.151553][ T338] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 21.157412][ T338] RIP: 0033:0x443409 [ 21.161283][ T338] Code: Bad RIP value. [ 21.165318][ T338] RSP: 002b:00007ffd5576c0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 21.173693][ T338] RAX: ffffffffffffffda RBX: 00000000004b53b0 RCX: 0000000000443409 [ 21.181635][ T338] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 21.189574][ T338] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000020000cc0 [ 21.197513][ T338] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b53b0 [ 21.205452][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 21.213483][ T338] ---[ end trace 76aaae1b8bf29616 ]--- [ 21.219142][ T338] BUG: Dentry ffff8881efaa0aa0{i=0,n=.index} still in use (1) [unmount of vfat loop0] [ 21.228955][ T338] ------------[ cut here ]------------ [ 21.234435][ T338] WARNING: CPU: 0 PID: 338 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 21.234443][ T338] Modules linked in: [ 21.246615][ T338] CPU: 0 PID: 338 Comm: syz-executor602 Tainted: G W 5.4.107-syzkaller-00751-gc50ff8e5608b #0 [ 21.258122][ T338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 21.268164][ T338] RIP: 0010:umount_check+0x179/0x1c0 [ 21.273445][ T338] 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 [ 21.293034][ T338] RSP: 0018:ffff8881e95c7a58 EFLAGS: 00010282 [ 21.299075][ T338] RAX: 0000000000000054 RBX: ffffffff85fc4dc0 RCX: 47f31a60fd3f7e00 [ 21.307027][ T338] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 21.314981][ T338] RBP: ffff8881f5290420 R08: ffffffff814e8887 R09: ffffed103edc5e08 [ 21.322931][ T338] R10: ffffed103edc5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 21.330882][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efaa0aa0 [ 21.338845][ T338] FS: 00000000013fa300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 21.347748][ T338] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.354308][ T338] CR2: 00000000004433df CR3: 0000000005e0e000 CR4: 00000000001406f0 [ 21.362279][ T338] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.370231][ T338] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.378192][ T338] Call Trace: [ 21.381477][ T338] d_walk+0x2d9/0x540 [ 21.385438][ T338] ? __d_free+0x20/0x20 [ 21.389574][ T338] shrink_dcache_for_umount+0x8a/0x1a0 [ 21.395023][ T338] generic_shutdown_super+0x63/0x2a0 [ 21.400301][ T338] kill_block_super+0x79/0xd0 [ 21.404954][ T338] deactivate_locked_super+0xaf/0x100 [ 21.410298][ T338] deactivate_super+0x1b3/0x270 [ 21.415126][ T338] ? deactivate_locked_super+0x100/0x100 [ 21.420761][ T338] ? dput+0x4de/0x5d0 [ 21.424725][ T338] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 21.429812][ T338] ? find_next_bit+0xc6/0x110 [ 21.434464][ T338] cleanup_mnt+0x432/0x4e0 [ 21.438856][ T338] task_work_run+0x186/0x1b0 [ 21.443421][ T338] do_exit+0xcb9/0x2bf0 [ 21.447547][ T338] ? mm_update_next_owner+0x5c0/0x5c0 [ 21.452888][ T338] ? __up_read+0x6f/0x1b0 [ 21.457203][ T338] ? __down_read+0x210/0x210 [ 21.461849][ T338] ? check_preemption_disabled+0x154/0x330 [ 21.467635][ T338] ? debug_smp_processor_id+0x20/0x20 [ 21.473000][ T338] do_group_exit+0x15c/0x2c0 [ 21.477566][ T338] ? do_user_addr_fault+0x6b0/0xb40 [ 21.482736][ T338] __do_sys_exit_group+0x13/0x20 [ 21.487644][ T338] __se_sys_exit_group+0x10/0x10 [ 21.492552][ T338] __x64_sys_exit_group+0x37/0x40 [ 21.497557][ T338] do_syscall_64+0xcb/0x1e0 [ 21.502032][ T338] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 21.507993][ T338] RIP: 0033:0x443409 [ 21.511866][ T338] Code: Bad RIP value. [ 21.515902][ T338] RSP: 002b:00007ffd5576c0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 21.524282][ T338] RAX: ffffffffffffffda RBX: 00000000004b53b0 RCX: 0000000000443409 [ 21.532236][ T338] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 21.540183][ T338] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000020000cc0 [ 21.548142][ T338] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b53b0 [ 21.556085][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 21.564034][ T338] ---[ end trace 76aaae1b8bf29617 ]--- [ *[ 21.570612][ T338] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... [0;1;31m** ] A start job is running for dev-ttyS0.device (14s / 1min 30s)