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 tty3. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty6. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.1.15' (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 (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)[ 18.620952][ T22] audit: type=1400 audit(1630188228.281:8): avc: denied { execmem } for pid=330 comm="syz-executor253" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 18.651545][ T332] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 18.661172][ T332] incfs: Can't find or create .index dir in ./file0 [ 18.668588][ T332] BUG: Dentry ffff8881ecbdd110{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ 18.678326][ T332] ------------[ cut here ]------------ [ 18.683783][ T332] WARNING: CPU: 1 PID: 332 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 18.692070][ T332] Modules linked in: [ 18.696198][ T332] CPU: 1 PID: 332 Comm: syz-executor253 Not tainted 5.4.125-syzkaller-00016-gae94e015273b #0 [ 18.706308][ T332] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.716385][ T332] RIP: 0010:umount_check+0x179/0x1c0 [ 18.721639][ T332] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 20 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 [ 18.741334][ T332] RSP: 0018:ffff8881e5717a58 EFLAGS: 00010282 [ 18.747369][ T332] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: de8609525618df00 [ 18.755314][ T332] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 18.763273][ T332] RBP: ffff8881e568d420 R08: ffffffff814e90d7 R09: ffffed103ede9608 [ 18.771211][ T332] R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 [ 18.779153][ T332] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecbdd110 [ 18.787090][ T332] FS: 0000000000ae2300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 18.795986][ T332] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.802558][ T332] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406e0 [ 18.810502][ T332] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.818444][ T332] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.826384][ T332] Call Trace: [ 18.829647][ T332] d_walk+0x2d9/0x540 [ 18.833598][ T332] ? __d_free+0x20/0x20 [ 18.837723][ T332] shrink_dcache_for_umount+0x8a/0x1a0 [ 18.843162][ T332] generic_shutdown_super+0x63/0x2a0 [ 18.848416][ T332] kill_block_super+0x79/0xd0 [ 18.853059][ T332] deactivate_locked_super+0xaf/0x100 [ 18.858425][ T332] deactivate_super+0x1b3/0x270 [ 18.863246][ T332] ? deactivate_locked_super+0x100/0x100 [ 18.868867][ T332] ? dput+0x4de/0x5d0 [ 18.872818][ T332] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 18.877900][ T332] ? find_next_bit+0xc6/0x110 [ 18.882545][ T332] cleanup_mnt+0x432/0x4e0 [ 18.886929][ T332] task_work_run+0x186/0x1b0 [ 18.891500][ T332] do_exit+0xcb9/0x2bf0 [ 18.895642][ T332] ? mm_update_next_owner+0x5c0/0x5c0 [ 18.900992][ T332] ? __up_read+0x6f/0x1b0 [ 18.905289][ T332] ? __down_read+0x210/0x210 [ 18.909844][ T332] ? check_preemption_disabled+0x154/0x330 [ 18.915617][ T332] ? debug_smp_processor_id+0x20/0x20 [ 18.920967][ T332] do_group_exit+0x15c/0x2c0 [ 18.925527][ T332] ? do_user_addr_fault+0x6b0/0xb40 [ 18.930690][ T332] __do_sys_exit_group+0x13/0x20 [ 18.935598][ T332] __se_sys_exit_group+0x10/0x10 [ 18.940503][ T332] __x64_sys_exit_group+0x37/0x40 [ 18.945493][ T332] do_syscall_64+0xcb/0x1e0 [ 18.949966][ T332] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 18.955826][ T332] RIP: 0033:0x442ea9 [ 18.959692][ T332] Code: Bad RIP value. [ 18.963912][ T332] RSP: 002b:00007ffdbe8005d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 18.972293][ T332] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442ea9 [ 18.980410][ T332] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 18.988540][ T332] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 18.996499][ T332] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 19.004455][ T332] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 19.012397][ T332] ---[ end trace e52bc1a73def9a4d ]--- [ 19.018471][ T332] BUG: Dentry ffff8881ecbdd110{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ *[0[ 19.028467][ T332] ------------[ cut here ]------------ [ 19.035115][ T332] WARNING: CPU: 1 PID: 332 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 19.043402][ T332] Modules linked in: [ 19.047279][ T332] CPU: 1 PID: 332 Comm: syz-executor253 Tainted: G W 5.4.125-syzkaller-00016-gae94e015273b #0 [ 19.058792][ T332] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.068823][ T332] RIP: 0010:umount_check+0x179/0x1c0 [ 19.074267][ T332] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 20 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 [ 19.093839][ T332] RSP: 0018:ffff8881e5717a58 EFLAGS: 00010282 [ 19.099881][ T332] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: de8609525618df00 [ 19.107829][ T332] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 19.115789][ T332] RBP: ffff8881e568d420 R08: ffffffff814e90d7 R09: ffffed103ede9608 [ 19.123733][ T332] R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 [ 19.131682][ T332] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecbdd110 [ 19.139641][ T332] FS: 0000000000ae2300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 19.148536][ T332] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.155089][ T332] CR2: 0000000000442e7f CR3: 00000001ee1a2000 CR4: 00000000001406e0 [ 19.163030][ T332] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.170972][ T332] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.178935][ T332] Call Trace: [ 19.182212][ T332] d_walk+0x2d9/0x540 [ 19.186165][ T332] ? __d_free+0x20/0x20 [ 19.190301][ T332] shrink_dcache_for_umount+0x8a/0x1a0 [ 19.195727][ T332] generic_shutdown_super+0x63/0x2a0 [ 19.200987][ T332] kill_block_super+0x79/0xd0 [ 19.205631][ T332] deactivate_locked_super+0xaf/0x100 [ 19.210971][ T332] deactivate_super+0x1b3/0x270 [ 19.215787][ T332] ? deactivate_locked_super+0x100/0x100 [ 19.221400][ T332] ? dput+0x4de/0x5d0 [ 19.225372][ T332] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 19.230454][ T332] ? find_next_bit+0xc6/0x110 [ 19.235099][ T332] cleanup_mnt+0x432/0x4e0 [ 19.239488][ T332] task_work_run+0x186/0x1b0 [ 19.244050][ T332] do_exit+0xcb9/0x2bf0 [ 19.248179][ T332] ? mm_update_next_owner+0x5c0/0x5c0 [ 19.253524][ T332] ? __up_read+0x6f/0x1b0 [ 19.257829][ T332] ? __down_read+0x210/0x210 [ 19.262417][ T332] ? check_preemption_disabled+0x154/0x330 [ 19.268197][ T332] ? debug_smp_processor_id+0x20/0x20 [ 19.273540][ T332] do_group_exit+0x15c/0x2c0 [ 19.278104][ T332] ? do_user_addr_fault+0x6b0/0xb40 [ 19.283286][ T332] __do_sys_exit_group+0x13/0x20 [ 19.288257][ T332] __se_sys_exit_group+0x10/0x10 [ 19.293176][ T332] __x64_sys_exit_group+0x37/0x40 [ 19.298185][ T332] do_syscall_64+0xcb/0x1e0 [ 19.302666][ T332] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 19.308528][ T332] RIP: 0033:0x442ea9 [ 19.312392][ T332] Code: Bad RIP value. [ 19.316430][ T332] RSP: 002b:00007ffdbe8005d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 19.324816][ T332] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442ea9 [ 19.332772][ T332] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 19.340804][ T332] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 19.348752][ T332] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 19.356819][ T332] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 19.364764][ T332] ---[ end trace e52bc1a73def9a4e ]--- ;1;31m*] A start job is runn[ 19.372527]