Warning: Permanently added '10.128.0.201' (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)[ **] 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 (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)[ *** ] A start job is running for dev-ttyS0.device (14s / 1min 30s)[*** ] A start job is running for dev-ttyS0.device (14s / 1min 30s)[** ] A start job is running for dev-ttyS0.device (15s / 1min 30s)[* ] A start job is running for dev-ttyS0.device (15s / 1min 30s)[ 22.645122][ T22] audit: type=1400 audit(1616139180.189:8): avc: denied { execmem } for pid=342 comm="syz-executor163" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 22.671199][ T343] incfs: Can't find or create .index dir in ./file0 [ 22.679566][ T343] BUG: Dentry ffff8881ef965110{i=0,n=.index} still in use (1) [unmount of ramfs ramfs] [ 22.689361][ T343] ------------[ cut here ]------------ [ 22.694875][ T343] WARNING: CPU: 0 PID: 343 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 22.703216][ T343] Modules linked in: [ 22.707094][ T343] CPU: 0 PID: 343 Comm: syz-executor163 Not tainted 5.4.106-syzkaller-00698-g3941336d0e38 #0 [ 22.717208][ T343] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 22.727328][ T343] RIP: 0010:umount_check+0x179/0x1c0 [ 22.732594][ T343] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 60 ec e8 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 f7 df 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 [ 22.752176][ T343] RSP: 0018:ffff8881e919fa60 EFLAGS: 00010296 [ 22.758214][ T343] RAX: 0000000000000055 RBX: ffffffff85fc1020 RCX: 88bee23c7603c700 [ 22.766155][ T343] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 22.774104][ T343] RBP: ffff8881e9064420 R08: ffffffff814e88c7 R09: ffffed103edc5e08 [ 22.782055][ T343] R10: ffffed103edc5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 22.790010][ T343] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ef965110 [ 22.797960][ T343] FS: 0000000000e03300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 22.806875][ T343] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.813430][ T343] CR2: 00000000004b01d0 CR3: 0000000005e0e000 CR4: 00000000001406f0 [ 22.821373][ T343] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.829314][ T343] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.837254][ T343] Call Trace: [ 22.840518][ T343] d_walk+0x2d9/0x540 [ 22.844472][ T343] ? __d_free+0x20/0x20 [ 22.848615][ T343] shrink_dcache_for_umount+0x8a/0x1a0 [ 22.854057][ T343] generic_shutdown_super+0x63/0x2a0 [ 22.859311][ T343] kill_litter_super+0x71/0xa0 [ 22.864042][ T343] deactivate_locked_super+0xaf/0x100 [ 22.869401][ T343] deactivate_super+0x1b3/0x270 [ 22.874221][ T343] ? deactivate_locked_super+0x100/0x100 [ 22.879820][ T343] ? dput+0x4de/0x5d0 [ 22.883780][ T343] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 22.888873][ T343] ? find_next_bit+0xc6/0x110 [ 22.893516][ T343] cleanup_mnt+0x432/0x4e0 [ 22.897925][ T343] task_work_run+0x186/0x1b0 [ 22.902484][ T343] do_exit+0xcb9/0x2bf0 [ 22.906629][ T343] ? mm_update_next_owner+0x5c0/0x5c0 [ 22.911983][ T343] ? __up_read+0x6f/0x1b0 [ 22.916288][ T343] ? __down_read+0x210/0x210 [ 22.920863][ T343] ? check_preemption_disabled+0x154/0x330 [ 22.926638][ T343] ? debug_smp_processor_id+0x20/0x20 [ 22.931976][ T343] do_group_exit+0x15c/0x2c0 [ 22.936549][ T343] ? do_user_addr_fault+0x6b0/0xb40 [ 22.941716][ T343] __do_sys_exit_group+0x13/0x20 [ 22.946627][ T343] __se_sys_exit_group+0x10/0x10 [ 22.951532][ T343] __x64_sys_exit_group+0x37/0x40 [ 22.956523][ T343] do_syscall_64+0xcb/0x1e0 [ 22.961011][ T343] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 22.966872][ T343] RIP: 0033:0x43e3a9 [ 22.970756][ T343] Code: Bad RIP value. [ 22.974811][ T343] RSP: 002b:00007ffd6fb45528 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 22.983189][ T343] RAX: ffffffffffffffda RBX: 00000000004af2f0 RCX: 000000000043e3a9 [ 22.991130][ T343] RDX: 000000000000003c RSI: 0000000000000