Starting Permit User Sessions... Starting OpenBSD Secure Shell server... [ OK ] Started Permit User Sessions. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty3. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.0.216' (ECDSA) to the list of known hosts. executing program [* ] 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)[ 18.823834][ T22] audit: type=1400 audit(1629223275.554:8): avc: denied { execmem } for pid=335 comm="syz-executor636" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 18.854735][ T338] erofs: (device loop0): mounted with opts: , root inode @ nid 36. [ 18.865071][ T338] incfs: Can't find or create .index dir in ./file0 [ 18.874114][ T338] BUG: Dentry ffff8881ecae1880{i=0,n=.index} still in use (1) [unmount of erofs loop0] [ 18.884723][ T338] ------------[ cut here ]------------ [ 18.890362][ T338] WARNING: CPU: 1 PID: 338 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 18.899206][ T338] Modules linked in: [ 18.903131][ T338] CPU: 1 PID: 338 Comm: syz-executor636 Not tainted 5.4.125-syzkaller-00008-ga8f2bcabf9c5 #0 [ 18.913761][ T338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.924841][ T338] RIP: 0010:umount_check+0x179/0x1c0 [ 18.930351][ T338] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 a0 0b 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 [ 18.951321][ T338] RSP: 0018:ffff8881e5cef710 EFLAGS: 00010292 [ 18.957551][ T338] RAX: 0000000000000055 RBX: ffffffff86013400 RCX: 99293f2f02bfe100 [ 18.965901][ T338] RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 [ 18.975202][ T338] RBP: ffff8881e627e420 R08: ffffffff814e90d7 R09: ffffed103ede9608 [ 18.983688][ T338] R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 [ 18.992166][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecae1880 [ 19.000985][ T338] FS: 00007fc2e6a2a700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 19.009981][ T338] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.016986][ T338] CR2: 00000000004d15c0 CR3: 0000000005e0e000 CR4: 00000000001406e0 [ 19.025233][ T338] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.033185][ T338] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.041150][ T338] Call Trace: [ 19.044524][ T338] d_walk+0x2d9/0x540 [ 19.048482][ T338] ? __d_free+0x20/0x20 [ 19.052614][ T338] shrink_dcache_for_umount+0x8a/0x1a0 [ 19.058309][ T338] generic_shutdown_super+0x63/0x2a0 [ 19.063569][ T338] kill_block_super+0x79/0xd0 [ 19.068231][ T338] erofs_kill_sb+0x5b/0xc0 [ 19.072639][ T338] deactivate_locked_super+0xaf/0x100 [ 19.078072][ T338] deactivate_super+0x1b3/0x270 [ 19.082983][ T338] ? deactivate_locked_super+0x100/0x100 [ 19.088600][ T338] ? dput+0x4de/0x5d0 [ 19.092550][ T338] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.097730][ T338] ? find_next_bit+0xc6/0x110 [ 19.102377][ T338] cleanup_mnt+0x432/0x4e0 [ 19.106764][ T338] task_work_run+0x186/0x1b0 [ 19.111324][ T338] do_exit+0xcb9/0x2bf0 [ 19.115535][ T338] ? mm_update_next_owner+0x5c0/0x5c0 [ 19.120894][ T338] ? debug_smp_processor_id+0x20/0x20 [ 19.126252][ T338] ? stack_trace_snprint+0x150/0x150 [ 19.131610][ T338] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.136779][ T338] ? _raw_spin_lock_irqsave+0x210/0x210 [ 19.142830][ T338] do_group_exit+0x15c/0x2c0 [ 19.147681][ T338] get_signal+0x164f/0x1fc0 [ 19.152360][ T338] ? ptrace_notify+0x340/0x340 [ 19.157644][ T338] ? check_preemption_disabled+0x154/0x330 [ 19.163536][ T338] do_signal+0x8d/0x610 [ 19.167939][ T338] ? kfree+0xe0/0x660 [ 19.172144][ T338] ? signal_fault+0x1e0/0x1e0 [ 19.176884][ T338] ? ksys_mount+0xe0/0xf0 [ 19.181456][ T338] ? __x64_sys_futex+0x1d/0xf0 [ 19.186347][ T338] prepare_exit_to_usermode+0x207/0x310 [ 19.192168][ T338] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 19.198063][ T338] RIP: 0033:0x449f39 [ 19.201938][ T338] Code: Bad RIP value. [ 19.206072][ T338] RSP: 002b:00007fc2e6a2a2f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 19.214755][ T338] RAX: fffffffffffffe00 RBX: 00000000004cb400 RCX: 0000000000449f39 [ 19.222701][ T338] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cb408 [ 19.230653][ T338] RBP: 00000000004cb40c R08: 0000000000000000 R09: 0000000000000000 [ 19.238690][ T338] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 19.247014][ T338] R13: 9eedc006e0f5e1e2 R14: 6e656d6572636e69 R15: 00000000004cb408 [ 19.254972][ T338] ---[ end trace dde480fbdc0a50c0 ]--- [ 19.261313][ T338] BUG: Dentry ffff8881ecae1880{i=0,n=.index} still in use (1) [unmount of erofs loop0] [ *[0;1[ 19.271654][ T338] ------------[ cut here ]------------ [ 19.278504][ T338] WARNING: CPU: 1 PID: 338 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 19.287004][ T338] Modules linked in: [ 19.290888][ T338] CPU: 1 PID: 338 Comm: syz-executor636 Tainted: G W 5.4.125-syzkaller-00008-ga8f2bcabf9c5 #0 [ 19.302586][ T338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.313116][ T338] RIP: 0010:umount_check+0x179/0x1c0 [ 19.318389][ T338] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 a0 0b 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 [ 19.338761][ T338] RSP: 0018:ffff8881e5cef710 EFLAGS: 00010292 [ 19.344938][ T338] RAX: 0000000000000055 RBX: ffffffff86013400 RCX: 99293f2f02bfe100 [ 19.352888][ T338] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 19.361354][ T338] RBP: ffff8881e627e420 R08: ffffffff814e90d7 R09: ffffed103ede9608 [ 19.369741][ T338] R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 [ 19.377701][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecae1880 [ 19.385750][ T338] FS: 00007fc2e6a2a700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 19.394657][ T338] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.401775][ T338] CR2: 0000000000449f0f CR3: 00000001ee1d6000 CR4: 00000000001406e0 [ 19.409842][ T338] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.418159][ T338] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.426101][ T338] Call Trace: [ 19.429371][ T338] d_walk+0x2d9/0x540 [ 19.433321][ T338] ? __d_free+0x20/0x20 [ 19.437445][ T338] shrink_dcache_for_umount+0x8a/0x1a0 [ 19.442884][ T338] generic_shutdown_super+0x63/0x2a0 [ 19.448171][ T338] kill_block_super+0x79/0xd0 [ 19.452823][ T338] erofs_kill_sb+0x5b/0xc0 [ 19.457221][ T338] deactivate_locked_super+0xaf/0x100 [ 19.462692][ T338] deactivate_super+0x1b3/0x270 [ 19.467523][ T338] ? deactivate_locked_super+0x100/0x100 [ 19.473260][ T338] ? dput+0x4de/0x5d0 [ 19.477231][ T338] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.482326][ T338] ? find_next_bit+0xc6/0x110 [ 19.486990][ T338] cleanup_mnt+0x432/0x4e0 [ 19.491399][ T338] task_work_run+0x186/0x1b0 [ 19.496029][ T338] do_exit+0xcb9/0x2bf0 [ 19.500416][ T338] ? mm_update_next_owner+0x5c0/0x5c0 [ 19.505890][ T338] ? debug_smp_processor_id+0x20/0x20 [ 19.511254][ T338] ? stack_trace_snprint+0x150/0x150 [ 19.516519][ T338] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.521621][ T338] ? _raw_spin_lock_irqsave+0x210/0x210 [ 19.527354][ T338] do_group_exit+0x15c/0x2c0 [ 19.531961][ T338] get_signal+0x164f/0x1fc0 [ 19.536526][ T338] ? ptrace_notify+0x340/0x340 [ 19.541343][ T338] ? check_preemption_disabled+0x154/0x330 [ 19.547236][ T338] do_signal+0x8d/0x610 [ 19.551387][ T338] ? kfree+0xe0/0x660 [ 19.555409][ T338] ? signal_fault+0x1e0/0x1e0 [ 19.560179][ T338] ? ksys_mount+0xe0/0xf0 [ 19.564506][ T338] ? __x64_sys_futex+0x1d/0xf0 [ 19.569243][ T338] prepare_exit_to_usermode+0x207/0x310 [ 19.574772][ T338] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 19.580992][ T338] RIP: 0033:0x449f39 [ 19.585379][ T338] Code: Bad RIP value. [ 19.589441][ T338] RSP: 002b:00007fc2e6a2a2f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 19.598252][ T338] RAX: fffffffffffffe00 RBX: 00000000004cb400 RCX: 0000000000449f39 [ 19.606304][ T338] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cb408 [ 19.615584][ T338] RBP: 00000000004cb40c R08: 0000000000000000 R09: 0000000000000000 [ 19.623998][ T338] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 19.632105][ T338] R13: 9eedc006e0f5e1e2 R14: 6e656d6572636e69 R15: 00000000004cb408 [ 19.641547][ T338] ---[ end trace dde480fbdc0a50c1 ]--- ;31m*[ 19.648735][ T338] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... * ] A start job is running for dev-ttyS0.device (11s / 1min 30s)