Warning: Permanently added '10.128.0.148' (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 (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)[ 19.783244][ T22] audit: type=1400 audit(1627757675.701:8): avc: denied { execmem } for pid=342 comm="syz-executor674" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 19.825842][ T343] EXT4-fs (loop0): mounted filesystem without journal. Opts: nombcache,,errors=continue [ 19.836301][ T343] incfs: Can't find or create .index dir in ./file0 [ 19.844043][ T343] BUG: Dentry ffff8881ecad2cc0{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ 19.854270][ T343] ------------[ cut here ]------------ [ 19.859957][ T343] WARNING: CPU: 1 PID: 343 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 19.868478][ T343] Modules linked in: [ 19.872454][ T343] CPU: 1 PID: 343 Comm: syz-executor674 Not tainted 5.4.125-syzkaller-00012-ge7e1f9adf836 #0 [ 19.882569][ T343] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.893664][ T343] RIP: 0010:umount_check+0x179/0x1c0 [ 19.899011][ T343] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 a0 0c 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 [ 19.919197][ T343] RSP: 0018:ffff8881e5fa7a58 EFLAGS: 00010282 [ 19.925237][ T343] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: c93aedfc312b8200 [ 19.933265][ T343] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 19.941398][ T343] RBP: ffff8881ee626420 R08: ffffffff814e90d7 R09: ffffed103ede9608 [ 19.949937][ T343] R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 [ 19.958143][ T343] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecad2cc0 [ 19.966090][ T343] FS: 0000000001306300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 19.974998][ T343] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.982569][ T343] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406e0 [ 19.990643][ T343] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.998676][ T343] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.006818][ T343] Call Trace: [ 20.010086][ T343] d_walk+0x2d9/0x540 [ 20.014142][ T343] ? __d_free+0x20/0x20 [ 20.018287][ T343] shrink_dcache_for_umount+0x8a/0x1a0 [ 20.024290][ T343] generic_shutdown_super+0x63/0x2a0 [ 20.029748][ T343] kill_block_super+0x79/0xd0 [ 20.034517][ T343] deactivate_locked_super+0xaf/0x100 [ 20.039868][ T343] deactivate_super+0x1b3/0x270 [ 20.044708][ T343] ? deactivate_locked_super+0x100/0x100 [ 20.050362][ T343] ? dput+0x4de/0x5d0 [ 20.054316][ T343] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 20.059588][ T343] ? find_next_bit+0xc6/0x110 [ 20.064254][ T343] cleanup_mnt+0x432/0x4e0 [ 20.068647][ T343] task_work_run+0x186/0x1b0 [ 20.073321][ T343] do_exit+0xcb9/0x2bf0 [ 20.077462][ T343] ? mm_update_next_owner+0x5c0/0x5c0 [ 20.082815][ T343] ? __up_read+0x6f/0x1b0 [ 20.087268][ T343] ? __down_read+0x210/0x210 [ 20.092429][ T343] ? check_preemption_disabled+0x154/0x330 [ 20.098529][ T343] ? debug_smp_processor_id+0x20/0x20 [ 20.103892][ T343] do_group_exit+0x15c/0x2c0 [ 20.108541][ T343] ? do_user_addr_fault+0x6b0/0xb40 [ 20.113741][ T343] __do_sys_exit_group+0x13/0x20 [ 20.118834][ T343] __se_sys_exit_group+0x10/0x10 [ 20.123833][ T343] __x64_sys_exit_group+0x37/0x40 [ 20.129108][ T343] do_syscall_64+0xcb/0x1e0 [ 20.133592][ T343] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.139720][ T343] RIP: 0033:0x442e89 [ 20.143601][ T343] Code: Bad RIP value. [ 20.147657][ T343] RSP: 002b:00007fffec032c58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 20.156035][ T343] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442e89 [ 20.164064][ T343] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 20.172095][ T343] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 20.180151][ T343] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 20.188357][ T343] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 20.196392][ T343] ---[ end trace 7799af44e55fb624 ]--- [ 20.203791][ T343] BUG: Dentry ffff8881ecad2cc0{i=0,n=.index} still in use (1) [unmount of ext4 loop0] [ *[0[ 20.213856][ T343] ------------[ cut here ]------------ [ 20.220478][ T343] WARNING: CPU: 0 PID: 343 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 20.228897][ T343] Modules linked in: [ 20.233202][ T343] CPU: 0 PID: 343 Comm: syz-executor674 Tainted: G W 5.4.125-syzkaller-00012-ge7e1f9adf836 #0 [ 20.245260][ T343] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.255578][ T343] RIP: 0010:umount_check+0x179/0x1c0 ;1;31m*] A s[ 20.260850][ T343] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 a0 0c 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 [ 20.282108][ T343] RSP: 0018:ffff8881e5fa7a58 EFLAGS: 00010282 [ 20.288419][ T343] RAX: 0000000000000054 RBX: ffffffff85faa1c0 RCX: c93aedfc312b8200 [ 20.296644][ T343] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 tart job is runn[ 20.304729][ T343] RBP: ffff8881ee626420 R08: ffffffff814e90d7 R09: ffffed103edc9608 [ 20.314074][ T343] R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 [ 20.322075][ T343] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecad2cc0 [ 20.330786][ T343] FS: 0000000001306300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 20.339823][ T343] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.346397][ T343] CR2: 0000559ba0299910 CR3: 00000001df5de000 CR4: 00000000001406f0 [ 20.354359][ T343] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.362326][ T343] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.370362][ T343] Call Trace: [ 20.373649][ T343] d_walk+0x2d9/0x540 ing for dev-ttyS[ 20.377793][ T343] ? __d_free+0x20/0x20 [ 20.383716][ T343] shrink_dcache_for_umount+0x8a/0x1a0 0.device (12s / [ 20.389260][ T343] generic_shutdown_super+0x63/0x2a0 [ 20.395907][ T343] kill_block_super+0x79/0xd0 1min 30s)[ 20.400566][ T343] deactivate_locked_super+0xaf/0x100 [ 20.406698][ T343] deactivate_super+0x1b3/0x270 [ 20.411735][ T343] ? deactivate_locked_super+0x100/0x100 [ 20.418077][ T343] ? dput+0x4de/0x5d0 [ 20.422051][ T343] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 20.427347][ T343] ? find_next_bit+0xc6/0x110 [ 20.432010][ T343] cleanup_mnt+0x432/0x4e0 [ 20.436408][ T343] task_work_run+0x186/0x1b0 [ 20.441899][ T343] do_exit+0xcb9/0x2bf0 [ 20.446029][ T343] ? mm_update_next_owner+0x5c0/0x5c0 [ 20.451571][ T343] ? __up_read+0x6f/0x1b0 [ 20.455880][ T343] ? __down_read+0x210/0x210 [ 20.460761][ T343] ? check_preemption_disabled+0x154/0x330 [ 20.466673][ T343] ? debug_smp_processor_id+0x20/0x20 [ 20.472400][ T343] do_group_exit+0x15c/0x2c0 [ 20.477066][ T343] ? do_user_addr_fault+0x6b0/0xb40 [ 20.482246][ T343] __do_sys_exit_group+0x13/0x20 [ 20.487376][ T343] __se_sys_exit_group+0x10/0x10 [ 20.492308][ T343] __x64_sys_exit_group+0x37/0x40 [ 20.497308][ T343] do_syscall_64+0xcb/0x1e0 [ 20.501783][ T343] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.507646][ T343] RIP: 0033:0x442e89 [ 20.511612][ T343] Code: Bad RIP value. [ 20.515649][ T343] RSP: 002b:00007fffec032c58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 20.524202][ T343] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442e89 [ 20.532148][ T343] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 20.540102][ T343] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 20.548416][ T343] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 20.556608][ T343] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 20.564652][ T343] ---[ end trace 7799af44e55fb625 ]--- [ 20.572366][ T343] VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day...