Warning: Permanently added '10.128.0.87' (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)[ 20.758620][ T22] audit: type=1400 audit(1615739769.316:8): avc: denied { execmem } for pid=324 comm="syz-executor621" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 20.791045][ T326] incfs: Can't find or create .index dir in ./file0 [ 20.798662][ T326] BUG: Dentry ffff8881efeb6000{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 20.808750][ T326] ------------[ cut here ]------------ [ 20.814199][ T326] WARNING: CPU: 0 PID: 326 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 20.822955][ T326] Modules linked in: [ 20.827182][ T326] CPU: 0 PID: 326 Comm: syz-executor621 Not tainted 5.4.105-syzkaller-00511-g6ede59f3f8d0 #0 [ 20.837436][ T326] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.847654][ T326] RIP: 0010:umount_check+0x179/0x1c0 [ 20.853031][ T326] 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 b7 e9 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 [ 20.873179][ T326] RSP: 0018:ffff8881e9e6fa58 EFLAGS: 00010282 [ 20.879233][ T326] RAX: 0000000000000055 RBX: ffffffff85fc50e0 RCX: 48719e814e7f4d00 [ 20.887950][ T326] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 20.896045][ T326] RBP: ffff8881e9fe7420 R08: ffffffff814e8047 R09: ffffed103edc5e08 [ 20.904250][ T326] R10: ffffed103edc5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 20.912397][ T326] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881efeb6000 [ 20.920437][ T326] FS: 00000000009e53c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 20.929349][ T326] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.935926][ T326] CR2: 00000000004b51d0 CR3: 00000001e1e40000 CR4: 00000000001406f0 [ 20.943903][ T326] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.951947][ T326] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.959910][ T326] Call Trace: [ 20.963183][ T326] d_walk+0x2d9/0x540 [ 20.967164][ T326] ? __d_free+0x20/0x20 [ 20.971296][ T326] shrink_dcache_for_umount+0x8a/0x1a0 [ 20.976726][ T326] generic_shutdown_super+0x63/0x2a0 [ 20.981981][ T326] kill_block_super+0x79/0xd0 [ 20.986685][ T326] deactivate_locked_super+0xaf/0x100 [ 20.992055][ T326] deactivate_super+0x1b3/0x270 [ 20.997501][ T326] ? deactivate_locked_super+0x100/0x100 [ 21.003273][ T326] ? dput+0x4de/0x5d0 [ 21.007643][ T326] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 21.012746][ T326] ? find_next_bit+0xc6/0x110 [ 21.017526][ T326] cleanup_mnt+0x432/0x4e0 [ 21.021937][ T326] task_work_run+0x186/0x1b0 [ 21.026505][ T326] do_exit+0xcb9/0x2bf0 [ 21.030671][ T326] ? mm_update_next_owner+0x5c0/0x5c0 [ 21.036154][ T326] ? __up_read+0x6f/0x1b0 [ 21.040611][ T326] ? __down_read+0x210/0x210 [ 21.045211][ T326] ? check_preemption_disabled+0x154/0x330 [ 21.051014][ T326] ? debug_smp_processor_id+0x20/0x20 [ 21.056539][ T326] do_group_exit+0x15c/0x2c0 [ 21.061109][ T326] ? do_user_addr_fault+0x6b0/0xb40 [ 21.066387][ T326] __do_sys_exit_group+0x13/0x20 [ 21.071741][ T326] __se_sys_exit_group+0x10/0x10 [ 21.076661][ T326] __x64_sys_exit_group+0x37/0x40 [ 21.081996][ T326] do_syscall_64+0xcb/0x1e0 [ 21.086500][ T326] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 21.092640][ T326] RIP: 0033:0x4434c9 [ 21.096521][ T326] Code: Bad RIP value. [ 21.100618][ T326] RSP: 002b:00007fff85300f38 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 21.109026][ T326] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 00000000004434c9 [ 21.117182][ T326] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 21.125134][ T326] RBP: 0000000000000001 R08: ffffffffffffffc4 R09: 0000000000000000 [ 21.133171][ T326] R10: 0000000000000001 R11: 0000000000000246 R12: 00000000004b42f0 [ 21.141370][ T326] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 21.149344][ T326] ---[ end trace 02ec66b9dd0ad128 ]--- [ *[0;1[ 21.157390][ T326] VFS: Bus