Starting Permit User Sessions... Starting OpenBSD Secure Shell server... [ OK ] Started Permit User Sessions. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty4. [ OK ] Started OpenBSD Secure Shell server. Warning: Permanently added '10.128.1.26' (ECDSA) to the list of known hosts. [* ] 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)[ 18.231798][ T22] audit: type=1400 audit(1616791696.445:8): avc: denied { execmem } for pid=353 comm="syz-executor668" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 18.262125][ T356] FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) [ 18.275033][ T356] incfs: Can't find or create .index dir in ./file0 [ 18.285807][ T359] BUG: Dentry ffff8881efa5e770{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 18.296315][ T359] ------------[ cut here ]------------ [ 18.301805][ T359] WARNING: CPU: 1 PID: 359 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 18.310731][ T359] Modules linked in: [ 18.314646][ T359] CPU: 1 PID: 359 Comm: syz-executor668 Not tainted 5.4.108-syzkaller-00846-g7af03784d889 #0 [ 18.325987][ T359] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.336202][ T359] RIP: 0010:umount_check+0x179/0x1c0 [ 18.341490][ T359] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 20 f1 e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 37 dc 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 [ 18.361199][ T359] RSP: 0018:ffff8881e938f738 EFLAGS: 00010282 [ 18.367279][ T359] RAX: 0000000000000055 RBX: ffffffff85fc5100 RCX: 77c15efefee82f00 [ 18.375328][ T359] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 18.383395][ T359] RBP: ffff8881f4f28420 R08: ffffffff814e8847 R09: ffffed103ede5e08 [ 18.392393][ T359] R10: ffffed103ede5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 18.400348][ T359] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efa5e770 [ 18.408408][ T359] FS: 00007fce9ad06700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 18.417368][ T359] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.417374][ T359] CR2: 0000555bc1491a90 CR3: 00000001ee030000 CR4: 00000000001406e0 [ 18.417382][ T359] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.417386][ T359] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.417390][ T359] Call Trace: [ 18.417410][ T359] d_walk+0x2d9/0x540 [ 18.417426][ T359] ? __d_free+0x20/0x20 [ 18.462822][ T359] shrink_dcache_for_umount+0x8a/0x1a0 [ 18.468307][ T359] generic_shutdown_super+0x63/0x2a0 [ 18.473706][ T359] kill_block_super+0x79/0xd0 [ 18.478551][ T359] deactivate_locked_super+0xaf/0x100 [ 18.483927][ T359] deactivate_super+0x1b3/0x270 [ 18.489024][ T359] ? deactivate_locked_super+0x100/0x100 [ 18.494673][ T359] ? dput+0x4de/0x5d0 [ 18.498708][ T359] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 18.503843][ T359] ? find_next_bit+0xc6/0x110 [ 18.508721][ T359] cleanup_mnt+0x432/0x4e0 [ 18.513474][ T359] task_work_run+0x186/0x1b0 [ 18.518163][ T359] do_exit+0xcb9/0x2bf0 [ 18.522827][ T359] ? mm_update_next_owner+0x5c0/0x5c0 [ 18.528404][ T359] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 18.533533][ T359] ? _raw_spin_lock_irqsave+0x210/0x210 [ 18.539082][ T359] do_group_exit+0x15c/0x2c0 [ 18.544363][ T359] get_signal+0x164f/0x1fc0 [ 18.548855][ T359] ? ptrace_notify+0x340/0x340 [ 18.554408][ T359] do_signal+0x8d/0x610 [ 18.558798][ T359] ? signal_fault+0x1e0/0x1e0 [ 18.563481][ T359] ? __x64_sys_futex+0x1d/0xf0 [ 18.568234][ T359] prepare_exit_to_usermode+0x207/0x310 [ 18.573763][ T359] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 18.579645][ T359] RIP: 0033:0x449f09 [ 18.583578][ T359] Code: Bad RIP value. [ 18.587624][ T359] RSP: 002b:00007fce9ad06308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 18.596544][ T359] RAX: fffffffffffffe00 RBX: 00000000004cb418 RCX: 0000000000449f09 [ 18.604605][ T359] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cb418 [ 18.613260][ T359] RBP: 00000000004cb410 R08: 0000000000000000 R09: 0000000000000000 [ 18.622980][ T359] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb41c [ 18.631588][ T359] R13: 0030656c69662f2e R14: 6e656d6572636e69 R15: 0000000000022000 [ 18.640100][ T359] ---[ end trace c4e9b8b4b2a52753 ]--- [ *[ 18.646141][ T359] BUG: Dentry ffff8881efa5e770{i=0,n=.index} still in use (1) [unmount of msdos loop0] [0;1;31m*[0[ 18.658783][ T359] ------------[ cut here ]------------ [ 18.665341][ T359] WARNING: CPU: 1 PID: 359 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 18.673775][ T359] Modules linked in: [ 18.677653][ T359] CPU: 1 PID: 359 Comm: syz-executor668 Tainted: G W 5.4.108-syzkaller-00846-g7af03784d889 #0 [ 18.689347][ T359] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.699420][ T359] RIP: 0010:umount_check+0x179/0x1c0 [ 18.704939][ T359] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 20 f1 e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 37 dc 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 [ 18.725021][ T359] RSP: 0018:ffff8881e938f738 EFLAGS: 00010282 [ 18.731601][ T359] RAX: 0000000000000055 RBX: ffffffff85fc5100 RCX: 77c15efefee82f00 [ 18.740761][ T359] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 18.749400][ T359] RBP: ffff8881f4f28420 R08: ffffffff814e8847 R09: ffffed103ede5e08 [ 18.757570][ T359] R10: ffffed103ede5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 18.765649][ T359] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efa5e770 [ 18.774108][ T359] FS: 00007fce9ad06700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 18.783236][ T359] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.789921][ T359] CR2: 0000000000449edf CR3: 00000001ee030000 CR4: 00000000001406e0 [ 18.797891][ T359] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.805946][ T359] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.814606][ T359] Call Trace: [ 18.818167][ T359] d_walk+0x2d9/0x540 [ 18.822314][ T359] ? __d_free+0x20/0x20 [ 18.826546][ T359] shrink_dcache_for_umount+0x8a/0x1a0 [ 18.832173][ T359] generic_shutdown_super+0x63/0x2a0 [ 18.837463][ T359] kill_block_super+0x79/0xd0 [ 18.842135][ T359] deactivate_locked_super+0xaf/0x100 [ 18.847594][ T359] deactivate_super+0x1b3/0x270 [ 18.852538][ T359] ? deactivate_locked_super+0x100/0x100 [ 18.858145][ T359] ? dput+0x4de/0x5d0 [ 18.862111][ T359] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 18.867202][ T359] ? find_next_bit+0xc6/0x110 [ 18.871868][ T359] cleanup_mnt+0x432/0x4e0 [ 18.877310][ T359] task_work_run+0x186/0x1b0 [ 18.881881][ T359] do_exit+0xcb9/0x2bf0 [ 18.886043][ T359] ? mm_update_next_owner+0x5c0/0x5c0 [ 18.892138][ T359] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 18.897241][ T359] ? _raw_spin_lock_irqsave+0x210/0x210 [ 18.903562][ T359] do_group_exit+0x15c/0x2c0 [ 18.908297][ T359] get_signal+0x164f/0x1fc0 [ 18.913732][ T359] ? ptrace_notify+0x340/0x340 [ 18.918663][ T359] do_signal+0x8d/0x610 [ 18.922901][ T359] ? signal_fault+0x1e0/0x1e0 [ 18.927930][ T359] ? __x64_sys_futex+0x1d/0xf0 [ 18.932982][ T359] prepare_exit_to_usermode+0x207/0x310 [ 18.938609][ T359] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 18.944504][ T359] RIP: 0033:0x449f09 [ 18.948392][ T359] Code: Bad RIP value. [ 18.952557][ T359] RSP: 002b:00007fce9ad06308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 18.962084][ T359] RAX: fffffffffffffe00 RBX: 00000000004cb418 RCX: 0000000000449f09 [ 18.970068][ T359] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cb418 [ 18.978029][ T359] RBP: 00000000004cb410 R08: 0000000000000000 R09: 0000000000000000 [ 18.986080][ T359] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb41c [ 18.994186][ T359] R13: 0030656c69662f2e R14: 6e656d6572636e69 R15: 0000000000022000 [ 19.002155][ T359] ---[ end trace c4e9b8b4b2a52754 ]--- ;31m* ] A start job is running for dev-ttyS0[ 19.011011][ T359] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... .device (10s / 1min 30s)