Warning: Permanently added '10.128.1.57' (ECDSA) to the list of known hosts. [ ***] 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 (15s / 1min 30s)[*** ] A start job is running for dev-ttyS0.device (15s / 1min 30s)[** ] A start job is running for dev-ttyS0.device (16s / 1min 30s)[* ] A start job is running for dev-ttyS0.device (17s / 1min 30s)[** ] A start job is running for dev-ttyS0.device (17s / 1min 30s)[*** ] A start job is running for dev-ttyS0.device (18s / 1min 30s)[ 25.824688][ T22] audit: type=1400 audit(1625700565.162:8): avc: denied { execmem } for pid=337 comm="syz-executor782" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 25.865668][ T338] FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) [ 25.876160][ T338] incfs: Can't find or create .index dir in ./file0 [ 25.883615][ T338] BUG: Dentry ffff8881ecabd550{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ 25.893555][ T338] ------------[ cut here ]------------ [ 25.899101][ T338] WARNING: CPU: 1 PID: 338 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 25.907486][ T338] Modules linked in: [ 25.911357][ T338] CPU: 1 PID: 338 Comm: syz-executor782 Not tainted 5.4.125-syzkaller-00244-g972d251662ee #0 [ 25.921560][ T338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.931600][ T338] RIP: 0010:umount_check+0x179/0x1c0 [ 25.936951][ T338] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 20 09 e9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 a7 a3 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 [ 25.957002][ T338] RSP: 0018:ffff8881e5dd7a58 EFLAGS: 00010282 [ 25.963127][ T338] RAX: 0000000000000055 RBX: ffffffff85fc6020 RCX: 63f4f089d894e200 [ 25.971069][ T338] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 25.979103][ T338] RBP: ffff8881ee0dd420 R08: ffffffff814e90a7 R09: ffffed103ede9608 [ 25.987148][ T338] R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 [ 25.995268][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecabd550 [ 26.003306][ T338] FS: 00000000018f2300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 26.012227][ T338] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.018809][ T338] CR2: 00000000004b51d0 CR3: 0000000005e0e000 CR4: 00000000001406e0 [ 26.026758][ T338] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.034929][ T338] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.042875][ T338] Call Trace: [ 26.046152][ T338] d_walk+0x2d9/0x540 [ 26.050194][ T338] ? __d_free+0x20/0x20 [ 26.054321][ T338] shrink_dcache_for_umount+0x8a/0x1a0 [ 26.059748][ T338] generic_shutdown_super+0x63/0x2a0 [ 26.065027][ T338] kill_block_super+0x79/0xd0 [ 26.069820][ T338] deactivate_locked_super+0xaf/0x100 [ 26.075304][ T338] deactivate_super+0x1b3/0x270 [ 26.080139][ T338] ? deactivate_locked_super+0x100/0x100 [ 26.085749][ T338] ? dput+0x4de/0x5d0 [ 26.090006][ T338] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 26.095090][ T338] ? find_next_bit+0xc6/0x110 [ 26.099834][ T338] cleanup_mnt+0x432/0x4e0 [ 26.104296][ T338] task_work_run+0x186/0x1b0 [ 26.108894][ T338] do_exit+0xcb9/0x2bf0 [ 26.113127][ T338] ? mm_update_next_owner+0x5c0/0x5c0 [ 26.118474][ T338] ? __up_read+0x6f/0x1b0 [ 26.122774][ T338] ? __down_read+0x210/0x210 [ 26.127492][ T338] ? check_preemption_disabled+0x154/0x330 [ 26.133374][ T338] ? debug_smp_processor_id+0x20/0x20 [ 26.138932][ T338] do_group_exit+0x15c/0x2c0 [ 26.143499][ T338] ? do_user_addr_fault+0x6b0/0xb40 [ 26.148793][ T338] __do_sys_exit_group+0x13/0x20 [ 26.153835][ T338] __se_sys_exit_group+0x10/0x10 [ 26.158876][ T338] __x64_sys_exit_group+0x37/0x40 [ 26.163905][ T338] do_syscall_64+0xcb/0x1e0 [ 26.168399][ T338] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 26.174269][ T338] RIP: 0033:0x442e09 [ 26.178246][ T338] Code: Bad RIP value. [ 26.182309][ T338] RSP: 002b:00007ffe42eb9538 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 26.190711][ T338] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442e09 [ 26.198845][ T338] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 26.206810][ T338] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004af000 [ 26.214864][ T338] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b42f0 [ 26.222896][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 26.230928][ T338] ---[ end trace cc605465fb37862f ]--- [ 26.236974][ T338] BUG: Dentry ffff8881ecabd550{i=0,n=.index} still in use (1) [unmount of msdos loop0] [ *[0;1;[ 26.247281][ T338] ------------[ cut here ]------------ [ 26.254137][ T338] WARNING: CPU: 1 PID: 338 at fs/dcache.c:1597 umount_check+0x179/0x1c0 [ 26.262430][ T338] Modules linked in: [ 26.266300][ T338] CPU: 1 PID: 338 Comm: syz-executor782 Tainted: G W 5.4.125-syzkaller-00244-g972d251662ee #0 [ 26.277805][ T338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.287841][ T338] RIP: 0010:umount_check+0x179/0x1c0 [ 26.293099][ T338] Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 20 09 e9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 a7 a3 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 [ 26.312693][ T338] RSP: 0018:ffff8881e5dd7a58 EFLAGS: 00010282 [ 26.318747][ T338] RAX: 0000000000000055 RBX: ffffffff85fc6020 RCX: 63f4f089d894e200 [ 26.326713][ T338] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 26.334745][ T338] RBP: ffff8881ee0dd420 R08: ffffffff814e90a7 R09: ffffed103ede9608 [ 26.343035][ T338] R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 [ 26.350990][ T338] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ecabd550 [ 26.358952][ T338] FS: 00000000018f2300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 26.368113][ T338] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.374898][ T338] CR2: 0000000000442ddf CR3: 00000001ee18e000 CR4: 00000000001406e0 [ 26.383053][ T338] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.391015][ T338] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.399054][ T338] Call Trace: [ 26.402345][ T338] d_walk+0x2d9/0x540 [ 26.406310][ T338] ? __d_free+0x20/0x20 [ 26.410446][ T338] shrink_dcache_for_umount+0x8a/0x1a0 [ 26.415897][ T338] generic_shutdown_super+0x63/0x2a0 [ 26.421165][ T338] kill_block_super+0x79/0xd0 [ 26.425908][ T338] deactivate_locked_super+0xaf/0x100 [ 26.431355][ T338] deactivate_super+0x1b3/0x270 [ 26.436269][ T338] ? deactivate_locked_super+0x100/0x100 [ 26.441874][ T338] ? dput+0x4de/0x5d0 [ 26.445831][ T338] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 26.450920][ T338] ? find_next_bit+0xc6/0x110 [ 26.455588][ T338] cleanup_mnt+0x432/0x4e0 [ 26.460002][ T338] task_work_run+0x186/0x1b0 [ 26.464566][ T338] do_exit+0xcb9/0x2bf0 [ 26.468701][ T338] ? mm_update_next_owner+0x5c0/0x5c0 [ 26.474065][ T338] ? __up_read+0x6f/0x1b0 [ 26.478370][ T338] ? __down_read+0x210/0x210 [ 26.483018][ T338] ? check_preemption_disabled+0x154/0x330 [ 26.488815][ T338] ? debug_smp_processor_id+0x20/0x20 [ 26.494400][ T338] do_group_exit+0x15c/0x2c0 [ 26.498977][ T338] ? do_user_addr_fault+0x6b0/0xb40 [ 26.504173][ T338] __do_sys_exit_group+0x13/0x20 [ 26.509103][ T338] __se_sys_exit_group+0x10/0x10 [ 26.514022][ T338] __x64_sys_exit_group+0x37/0x40 [ 26.519040][ T338] do_syscall_64+0xcb/0x1e0 [ 26.523549][ T338] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 26.529530][ T338] RIP: 0033:0x442e09 [ 26.533401][ T338] Code: Bad RIP value. [ 26.537443][ T338] RSP: 002b:00007ffe42eb9538 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 26.545866][ T338] RAX: ffffffffffffffda RBX: 00000000004b42f0 RCX: 0000000000442e09 [ 26.553836][ T338] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 26.561932][ T338] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000004