Warning: Permanently added '10.128.0.16' (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 (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 (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)[ 19.920379][ T22] audit: type=1400 audit(1622311449.601:8): avc: denied { execmem } for pid=350 comm="syz-executor250" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 19.960966][ T352] FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) [ 19.971071][ T352] incfs: Can't find or create .index dir in ./file0 [ 19.978473][ T352] BUG: Dentry ffff8881ecaf5770{i=0,n=.index} still in use (1) [unmount of vfat loop0] [ 19.988172][ T352] ------------[ cut here ]------------ [ 19.993626][ T352] WARNING: CPU: 0 PID: 352 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 20.001916][ T352] Modules linked in: [ 20.005782][ T352] CPU: 0 PID: 352 Comm: syz-executor250 Not tainted 5.4.123-syzkaller-00835-g3e256ddba1ff #0 [ 20.016115][ T352] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.026190][ T352] RIP: 0010:umount_check+0x179/0x1c0 [ 20.031497][ T352] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 20 02 e9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 67 a6 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 [ 20.051080][ T352] RSP: 0018:ffff8881e5507a58 EFLAGS: 00010282 [ 20.057109][ T352] RAX: 0000000000000054 RBX: ffffffff85fc59e0 RCX: 3c76a4d1470ff100 [ 20.065056][ T352] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 20.072995][ T352] RBP: ffff8881ee62b420 R08: ffffffff814e8437 R09: ffffed103edc5e08 [ 20.080959][ T352] R10: ffffed103edc5e08 R11: 0000000000000000 R12: dffffc0000000000 [ 20.089458][ T352] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecaf5770 [ 20.097411][ T352] FS: 0000000001b18300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 20.106323][ T352] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.112888][ T352] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406f0 [ 20.120906][ T352] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.128936][ T352] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.136886][ T352] Call Trace: [ 20.140158][ T352] d_walk+0x2d9/0x540 [ 20.144120][ T352] ? __d_free+0x20/0x20 [ 20.148245][ T352] shrink_dcache_for_umount+0x8a/0x1a0 [ 20.154134][ T352] generic_shutdown_super+0x63/0x2a0 [ 20.159389][ T352] kill_block_super+0x79/0xd0 [ 20.164140][ T352] deactivate_locked_super+0xaf/0x100 [ 20.169483][ T352] deactivate_super+0x1b3/0x270 [ 20.174303][ T352] ? deactivate_locked_super+0x100/0x100 [ 20.179942][ T352] ? dput+0x4de/0x5d0 [ 20.183919][ T352] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 20.189012][ T352] ? find_next_bit+0xc6/0x110 [ 20.189021][ T352] cleanup_mnt+0x432/0x4e0 [ 20.189029][ T352] task_work_run+0x186/0x1b0 [ 20.189042][ T352] do_exit+0xcb9/0x2bf0 [ 20.206791][ T352] ? mm_update_next_owner+0x5c0/0x5c0 [ 20.212175][ T352] ? __up_read+0x6f/0x1b0 [ 20.216498][ T352] ? __down_read+0x210/0x210 [ 20.221067][ T352] ? check_preemption_disabled+0x154/0x330 [ 20.227193][ T352] ? debug_smp_processor_id+0x20/0x20 [ 20.232581][ T352] do_group_exit+0x15c/0x2c0 [ 20.237157][ T352] ? do_user_addr_fault+0x6b0/0xb40 [[ 20.242336][ T352] __do_sys_exit_group+0x13/0x20 [ 20.247331][ T352] __se_sys_exit_group+0x10/0x10 [ 20.252258][ T352] __x64_sys_exit_group+0x37/0x40 [ 20.257284][ T352] do_syscall_64+0xcb/0x1e0 *[0;1[ 20.261872][ T352] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.269143][ T352] RIP: 0033:0x442df9 ;31m*[ 20.273027][ T352] Code: Bad RIP value. [ 20.278462][ T352] RSP: 002b:00007ffd5fd63288 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 *] [ 20.286955][ T352] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442df9 [ 20.295593][ T352] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 20.303560][ T352] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 20.311532][ T352] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 A start job is r[ 20.319483][ T352] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 20.328839][ T352] ---[ end trace 80dad6407846cb6f ]--- unning for dev-t[ 20.335325][ T352] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... tyS0.device (13s / 1min 30s)