Starting OpenBSD Secure Shell server... Starting Permit User Sessions... [ OK ] Started Permit User Sessions. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty6. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.0.159' (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)[ 18.370677][ T22] audit: type=1400 audit(1626919029.729:8): avc: denied { execmem } for pid=353 comm="syz-executor992" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 18.414280][ T354] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 18.426413][ T354] EXT4-fs error (device loop0): __ext4_new_inode:930: comm syz-executor992: reserved inode found cleared - inode=1 [ 18.439797][ T354] incfs: Can't find or create .index dir in ./file0 [ 18.446939][ T354] BUG: Dentry ffff8881eca8c220{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ 18.456733][ T354] ------------[ cut here ]------------ [ 18.462198][ T354] WARNING: CPU: 1 PID: 354 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 18.470928][ T354] Modules linked in: [ 18.474820][ T354] CPU: 1 PID: 354 Comm: syz-executor992 Not tainted 5.4.125-syzkaller-00004-gfe8243e7f1d1 #0 [ 18.484954][ T354] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.495532][ T354] RIP: 0010:umount_check+0x179/0x1c0 [ 18.500789][ T354] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 60 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 [ 18.520411][ T354] RSP: 0018:ffff8881e6737a58 EFLAGS: 00010282 [ 18.526569][ T354] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: 2845cd9facca8500 [ 18.535375][ T354] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 18.543345][ T354] RBP: ffff8881e659c420 R08: ffffffff814e90d7 R09: ffffed103ede9608 [ 18.551347][ T354] R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 [ 18.559308][ T354] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881eca8c220 [ 18.567615][ T354] FS: 0000000000a16300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 18.576701][ T354] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.583301][ T354] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406e0 [ 18.591478][ T354] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.599497][ T354] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.608092][ T354] Call Trace: [ 18.611372][ T354] d_walk+0x2d9/0x540 [ 18.615331][ T354] ? __d_free+0x20/0x20 [ 18.619564][ T354] shrink_dcache_for_umount+0x8a/0x1a0 [ 18.625008][ T354] generic_shutdown_super+0x63/0x2a0 [ 18.630289][ T354] kill_block_super+0x79/0xd0 [ 18.635038][ T354] deactivate_locked_super+0xaf/0x100 [ 18.640487][ T354] deactivate_super+0x1b3/0x270 [ 18.645418][ T354] ? deactivate_locked_super+0x100/0x100 [ 18.651038][ T354] ? dput+0x4de/0x5d0 [ 18.654996][ T354] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 18.660081][ T354] ? find_next_bit+0xc6/0x110 [ 18.664739][ T354] cleanup_mnt+0x432/0x4e0 [ 18.669280][ T354] task_work_run+0x186/0x1b0 [ 18.673843][ T354] do_exit+0xcb9/0x2bf0 [ 18.678070][ T354] ? mm_update_next_owner+0x5c0/0x5c0 [ 18.683692][ T354] ? __up_read+0x6f/0x1b0 [ 18.688088][ T354] ? __down_read+0x210/0x210 [ 18.692673][ T354] ? check_preemption_disabled+0x154/0x330 [ 18.698986][ T354] ? debug_smp_processor_id+0x20/0x20 [ 18.704397][ T354] do_group_exit+0x15c/0x2c0 [ 18.709000][ T354] ? do_user_addr_fault+0x6b0/0xb40 [ 18.714530][ T354] __do_sys_exit_group+0x13/0x20 [ 18.719546][ T354] __se_sys_exit_group+0x10/0x10 [ 18.724675][ T354] __x64_sys_exit_group+0x37/0x40 [ 18.730623][ T354] do_syscall_64+0xcb/0x1e0 [ 18.735206][ T354] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 18.741247][ T354] RIP: 0033:0x442f39 [ 18.745290][ T354] Code: Bad RIP value. [ 18.749345][ T354] RSP: 002b:00007fff74c63018 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 18.757729][ T354] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442f39 [ 18.765848][ T354] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 18.773790][ T354] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 18.781916][ T354] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 18.789965][ T354] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 18.798000][ T354] ---[ end trace 07abac4ba3b35a7d ]--- [ **[ 18.806064][ T354] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice d