[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 54.681085][ T26] audit: type=1800 audit(1571457900.070:25): pid=8500 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 54.703577][ T26] audit: type=1800 audit(1571457900.070:26): pid=8500 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 54.724068][ T26] audit: type=1800 audit(1571457900.080:27): pid=8500 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.47' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 910.346994][ T1073] INFO: task syz-executor350:8656 can't die for more than 143 seconds. [ 910.355424][ T1073] syz-executor350 R running task 27256 8656 8654 0x00004006 [ 910.388457][ T1073] Call Trace: [ 910.393573][ T1073] __schedule+0x94a/0x1e70 [ 910.407213][ T1073] ? __sched_text_start+0x8/0x8 [ 910.412313][ T1073] ? blk_insert_cloned_request+0x530/0x530 [ 910.425805][ T1073] ? prepare_to_wait_exclusive+0x123/0x320 [ 910.446148][ T1073] schedule+0xd9/0x260 [ 910.457681][ T1073] io_schedule+0x1c/0x70 [ 910.471613][ T1073] rq_qos_wait+0x301/0x3f0 [ 910.476325][ T1073] ? rq_depth_scale_down+0x140/0x140 [ 910.486731][ T1073] ? elv_merge+0x185/0x3b0 [ 910.516564][ T1073] ? sysv68_partition+0x980/0x980 [ 910.542242][ T1073] ? wbt_exit+0xb0/0xb0 [ 910.546467][ T1073] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 910.592655][ T1073] wbt_wait+0x20b/0x370 [ 910.600847][ T1073] ? wbt_track+0xd0/0xd0 [ 910.605879][ T1073] ? blk_rq_map_sg+0x1b10/0x1b10 [ 910.624691][ T1073] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 910.643321][ T1073] ? blk_rq_merge_ok+0xad/0x6b0 [ 910.653365][ T1073] ? wbt_track+0xd0/0xd0 [ 910.669105][ T1073] __rq_qos_throttle+0x56/0xa0 [ 910.674181][ T1073] blk_mq_make_request+0x3d0/0x2280 [ 910.684718][ T1073] ? blk_mq_try_issue_directly+0x1c0/0x1c0 [ 910.697851][ T1073] ? __kasan_check_read+0x11/0x20 [ 910.705491][ T1073] generic_make_request+0x23c/0xb50 [ 910.715830][ T1073] ? blk_queue_enter+0xe30/0xe30 [ 910.725955][ T1073] ? lock_downgrade+0x920/0x920 [ 910.741166][ T1073] submit_bio+0x113/0x600 [ 910.746215][ T1073] ? submit_bio+0x113/0x600 [ 910.759742][ T1073] ? generic_make_request+0xb50/0xb50 [ 910.771407][ T1073] ? bvec_alloc+0x2f0/0x2f0 [ 910.776316][ T1073] ? bio_add_page+0x1ac/0x220 [ 910.784862][ T1073] blk_next_bio+0x4a/0x60 [ 910.811179][ T1073] __blkdev_issue_zero_pages+0x151/0x430 [ 910.828851][ T1073] blkdev_issue_zeroout+0x434/0x4c0 [ 910.834359][ T1073] ? __blkdev_issue_zeroout+0x1a0/0x1a0 [ 910.848330][ T1073] ? lock_downgrade+0x920/0x920 [ 910.853407][ T1073] ? handle_mm_fault+0x292/0xa90 [ 910.863655][ T1073] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 910.874670][ T1073] ? common_file_perm+0x238/0x720 [ 910.885116][ T1073] blkdev_fallocate+0x2fc/0x410 [ 910.900037][ T1073] ? blkdev_read_iter+0x190/0x190 [ 910.916982][ T1073] vfs_fallocate+0x4aa/0xa50 [ 910.921646][ T1073] ksys_fallocate+0x58/0xa0 [ 910.926162][ T1073] __x64_sys_fallocate+0x97/0xf0 [ 910.935193][ T1073] do_syscall_64+0xfa/0x760 [ 910.953011][ T1073] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 910.964739][ T1073] RIP: 0033:0x441269 [ 910.990044][ T1073] Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 911.027942][ T1073] RSP: 002b:00007ffc6d0e55e8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 911.046118][ T1073] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 911.054393][ T1073] RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 [ 911.062595][ T1073] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 911.070826][ T1073] R10: 0000400000000200 R11: 0000000000000246 R12: 0000000000401fe0 [ 911.081028][ T1073] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 911.092650][ T1073] INFO: task syz-executor350:8661 can't die for more than 144 seconds. [ 911.104266][ T1073] syz-executor350 R running task 27256 8661 8660 0x00004006 [ 911.114772][ T1073] Call Trace: [ 911.120129][ T1073] __schedule+0x94a/0x1e70 [ 911.125233][ T1073] ? __sched_text_start+0x8/0x8 [ 911.130537][ T1073] ? blk_insert_cloned_request+0x530/0x530 [ 911.137377][ T1073] ? prepare_to_wait_exclusive+0x123/0x320 [ 911.145915][ T1073] schedule+0xd9/0x260 [ 911.150052][ T1073] ? wbt_exit+0xb0/0xb0 [ 911.155961][ T1073] io_schedule+0x1c/0x70 [ 911.161983][ T1073] rq_qos_wait+0x301/0x3f0 [ 911.166801][ T1073] ? rq_depth_scale_down+0x140/0x140 [ 911.172399][ T1073] ? blk_queue_enter+0xe30/0xe30 [ 911.180952][ T1073] ? sysv68_partition+0x980/0x980 [ 911.186119][ T1073] ? wbt_exit+0xb0/0xb0 [ 911.190578][ T1073] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 911.197186][ T1073] wbt_wait+0x20b/0x370 [ 911.201984][ T1073] ? wbt_track+0xd0/0xd0 [ 911.206774][ T1073] ? blk_rq_map_sg+0x1b10/0x1b10 [ 911.212545][ T1073] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 911.219061][ T1073] ? blk_rq_merge_ok+0xad/0x6b0 [ 911.224264][ T1073] ? wbt_track+0xd0/0xd0 [ 911.228983][ T1073] __rq_qos_throttle+0x56/0xa0 [ 911.234013][ T1073] blk_mq_make_request+0x3d0/0x2280 [ 911.243731][ T1073] ? blk_mq_try_issue_directly+0x1c0/0x1c0 [ 911.252252][ T1073] ? __kasan_check_read+0x11/0x20 [ 911.257559][ T1073] generic_make_request+0x23c/0xb50 [ 911.263596][ T1073] ? blk_queue_enter+0xe30/0xe30 [ 911.271204][ T1073] ? lock_downgrade+0x920/0x920 [ 911.276412][ T1073] submit_bio+0x113/0x600 [ 911.282872][ T1073] ? submit_bio+0x113/0x600 [ 911.287659][ T1073] ? generic_make_request+0xb50/0xb50 [ 911.293371][ T1073] ? bvec_alloc+0x2f0/0x2f0 [ 911.301917][ T1073] ? bio_add_page+0x1ac/0x220 [ 911.308945][ T1073] blk_next_bio+0x4a/0x60 [ 911.320167][ T1073] __blkdev_issue_zero_pages+0x151/0x430 [ 911.326202][ T1073] blkdev_issue_zeroout+0x434/0x4c0 [ 911.340214][ T1073] ? __blkdev_issue_zeroout+0x1a0/0x1a0 [ 911.346149][ T1073] ? lock_downgrade+0x920/0x920 [ 911.356105][ T1073] ? handle_mm_fault+0x292/0xa90 [ 911.394023][ T1073] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 911.406219][ T1073] ? common_file_perm+0x238/0x720 [ 911.426067][ T1073] blkdev_fallocate+0x2fc/0x410 [ 911.437384][ T1073] ? blkdev_read_iter+0x190/0x190 [ 911.442706][ T1073] vfs_fallocate+0x4aa/0xa50 [ 911.451556][ T1073] ksys_fallocate+0x58/0xa0 [ 911.456534][ T1073] __x64_sys_fallocate+0x97/0xf0 [ 911.466223][ T1073] do_syscall_64+0xfa/0x760 [ 911.494602][ T1073] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 911.507062][ T1073] RIP: 0033:0x441269 [ 911.516019][ T1073] Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 911.555738][ T1073] RSP: 002b:00007ffc6d0e55e8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 911.570685][ T1073] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 911.590681][ T1073] RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 [ 911.603656][ T1073] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 911.617024][ T1073] R10: 0000400000000200 R11: 0000000000000246 R12: 0000000000401fe0 [ 911.633679][ T1073] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 911.647488][ T1073] INFO: task syz-executor350:8662 can't die for more than 144 seconds. [ 911.662310][ T1073] syz-executor350 R running task 27256 8662 8658 0x00004006 [ 911.675695][ T1073] Call Trace: [ 911.689726][ T1073] __schedule+0x94a/0x1e70 [ 911.694746][ T1073] ? __sched_text_start+0x8/0x8 [ 911.722019][ T1073] ? blk_insert_cloned_request+0x530/0x530 [ 911.736406][ T1073] ? prepare_to_wait_exclusive+0x123/0x320 [ 911.770949][ T1073] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 911.776724][ T1073] ? io_schedule_prepare+0xb4/0xe0 [ 911.789098][ T1073] ? io_schedule+0xc/0x70 [ 911.793862][ T1073] ? rq_qos_wait+0x301/0x3f0 [ 911.807408][ T1073] ? find_held_lock+0x35/0x130 [ 911.812443][ T1073] ? rq_depth_scale_down+0x140/0x140 [ 911.836221][ T1073] ? blk_queue_enter+0xe30/0xe30 [ 911.856125][ T1073] ? sysv68_partition+0x980/0x980 [ 911.868182][ T1073] ? wbt_exit+0xb0/0xb0 [ 911.888192][ T1073] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 911.894145][ T1073] ? wbt_wait+0x20b/0x370 [ 911.903739][ T1073] ? wbt_track+0xd0/0xd0 [ 911.917265][ T1073] ? blk_rq_map_sg+0x1b10/0x1b10 [ 911.933601][ T1073] ? __sanitizer_cov_trace_const_cmp1+0x1/0x20 [ 911.947527][ T1073] ? blk_rq_merge_ok+0xad/0x6b0 [ 911.978495][ T1073] ? wbt_track+0xd0/0xd0 [ 911.982799][ T1073] ? blk_mq_make_request+0x17d/0x2280 [ 912.029959][ T1073] ? blk_mq_try_issue_directly+0x1c0/0x1c0 [ 912.035839][ T1073] ? __kasan_check_read+0x11/0x20 [ 912.052050][ T1073] ? generic_make_request+0x23c/0xb50 [ 912.072914][ T1073] ? blk_queue_enter+0xe30/0xe30 [ 912.082393][ T1073] ? lock_downgrade+0x920/0x920 [ 912.100108][ T1073] ? submit_bio+0x113/0x600 [ 912.104945][ T1073] ? submit_bio+0x113/0x600 [ 912.128307][ T1073] ? generic_make_request+0xb50/0xb50 [ 912.135410][ T1073] ? bvec_alloc+0x2f0/0x2f0 [ 912.151501][ T1073] ? bio_add_page+0x1ac/0x220 [ 912.162718][ T1073] ? blk_next_bio+0x4a/0x60 [ 912.171354][ T1073] ? __blkdev_issue_zero_pages+0x151/0x430 [ 912.187323][ T1073] ? blkdev_issue_zeroout+0x434/0x4c0 [ 912.208373][ T1073] ? __blkdev_issue_zeroout+0x1a0/0x1a0 [ 912.213972][ T1073] ? lock_downgrade+0x920/0x920 [ 912.223947][ T1073] ? handle_mm_fault+0x292/0xa90 [ 912.234131][ T1073] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 912.245086][ T1073] ? common_file_perm+0x238/0x720 [ 912.263011][ T1073] ? blkdev_fallocate+0x2fc/0x410 [ 912.274859][ T1073] ? blkdev_read_iter+0x190/0x190 [ 912.290996][ T1073] ? vfs_fallocate+0x4aa/0xa50 [ 912.297642][ T1073] ? ksys_fallocate+0x58/0xa0 [ 912.314109][ T1073] ? __x64_sys_fallocate+0x97/0xf0 [ 912.327981][ T1073] ? do_syscall_64+0xfa/0x760 [ 912.335110][ T1073] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 912.350360][ T1073] INFO: task syz-executor350:8663 can't die for more than 145 seconds. [ 912.364297][ T1073] syz-executor350 D27256 8663 8655 0x00004006 [ 912.381467][ T1073] Call Trace: [ 912.386197][ T1073] __schedule+0x94a/0x1e70 [ 912.405520][ T1073] ? __sched_text_start+0x8/0x8 [ 912.420631][ T1073] ? blk_insert_cloned_request+0x530/0x530 [ 912.432630][ T1073] ? __kasan_check_write+0x14/0x20 [ 912.473028][ T1073] ? wbt_exit+0xb0/0xb0 [ 912.481134][ T1073] schedule+0xd9/0x260 [ 912.494538][ T1073] ? wbt_exit+0xb0/0xb0 [ 912.505074][ T1073] io_schedule+0x1c/0x70 [ 912.518379][ T1073] rq_qos_wait+0x301/0x3f0 [ 912.539185][ T1073] ? rq_depth_scale_down+0x140/0x140 [ 912.544522][ T1073] ? blk_queue_enter+0xe30/0xe30 [ 912.587785][ T1073] ? sysv68_partition+0x980/0x980 [ 912.592861][ T1073] ? wbt_exit+0xb0/0xb0 [ 912.625118][ T1073] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 912.635963][ T1073] wbt_wait+0x20b/0x370 [ 912.648027][ T1073] ? wbt_track+0xd0/0xd0 [ 912.652610][ T1073] ? blk_rq_map_sg+0x1b10/0x1b10 [ 912.665723][ T1073] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 912.682716][ T1073] ? blk_rq_merge_ok+0xad/0x6b0 [ 912.693118][ T1073] ? wbt_track+0xd0/0xd0 [ 912.712928][ T1073] __rq_qos_throttle+0x56/0xa0 [ 912.722283][ T1073] blk_mq_make_request+0x3d0/0x2280 [ 912.748331][ T1073] ? blk_mq_try_issue_directly+0x1c0/0x1c0 [ 912.774077][ T1073] ? __kasan_check_read+0x11/0x20 [ 912.789109][ T1073] generic_make_request+0x23c/0xb50 [ 912.805165][ T1073] ? blk_queue_enter+0xe30/0xe30 [ 912.816493][ T1073] ? lock_downgrade+0x920/0x920 [ 912.854360][ T1073] submit_bio+0x113/0x600 [ 912.863245][ T1073] ? submit_bio+0x113/0x600 [ 912.881502][ T1073] ? generic_make_request+0xb50/0xb50 [ 912.925442][ T1073] ? bvec_alloc+0x2f0/0x2f0 [ 912.939775][ T1073] ? bio_add_page+0x1ac/0x220 [ 912.944710][ T1073] blk_next_bio+0x4a/0x60 [ 912.955063][ T1073] __blkdev_issue_zero_pages+0x151/0x430 [ 912.966594][ T1073] blkdev_issue_zeroout+0x434/0x4c0 [ 912.981670][ T1073] ? __blkdev_issue_zeroout+0x1a0/0x1a0 [ 912.993196][ T1073] ? lock_downgrade+0x920/0x920 [ 913.004040][ T1073] ? handle_mm_fault+0x292/0xa90 [ 913.018382][ T1073] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 913.025682][ T1073] ? common_file_perm+0x238/0x720 [ 913.042131][ T1073] blkdev_fallocate+0x2fc/0x410 [ 913.051512][ T1073] ? blkdev_read_iter+0x190/0x190 [ 913.063961][ T1073] vfs_fallocate+0x4aa/0xa50 [ 913.072525][ T1073] ksys_fallocate+0x58/0xa0 [ 913.087949][ T1073] __x64_sys_fallocate+0x97/0xf0 [ 913.095245][ T1073] do_syscall_64+0xfa/0x760 [ 913.108583][ T1073] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 913.123430][ T1073] RIP: 0033:0x441269 [ 913.147218][ T1073] Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 913.175763][ T1073] RSP: 002b:00007ffc6d0e55e8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 913.192560][ T1073] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 913.205617][ T1073] RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 [ 913.214491][ T1073] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 913.293286][ T1073] R10: 0000400000000200 R11: 0000000000000246 R12: 0000000000401fe0 [ 913.324478][ T1073] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 913.338425][ T1073] INFO: task syz-executor350:8664 can't die for more than 146 seconds. [ 913.353925][ T1073] syz-executor350 R running task 27336 8664 8659 0x00004006 [ 913.366613][ T1073] Call Trace: [ 913.370206][ T1073] __schedule+0x94a/0x1e70 [ 913.374909][ T1073] ? __sched_text_start+0x8/0x8 [ 913.380152][ T1073] ? blk_insert_cloned_request+0x530/0x530 [ 913.387658][ T1073] ? prepare_to_wait_exclusive+0x123/0x320 [ 913.394282][ T1073] schedule+0xd9/0x260 [ 913.400746][ T1073] ? wbt_exit+0xb0/0xb0 [ 913.405352][ T1073] io_schedule+0xc/0x70 [ 913.432892][ T1073] rq_qos_wait+0x301/0x3f0 [ 913.454710][ T1073] ? rq_depth_scale_down+0x140/0x140 [ 913.472572][ T1073] ? blk_queue_enter+0xe30/0xe30 [ 913.489295][ T1073] ? sysv68_partition+0x980/0x980 [ 913.494698][ T1073] ? wbt_exit+0xb0/0xb0 [ 913.503452][ T1073] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 913.514409][ T1073] ? __blk_queue_split+0x8dd/0x1560 [ 913.525195][ T1073] wbt_wait+0x20b/0x370 [ 913.540981][ T1073] ? wbt_track+0xd0/0xd0 [ 913.553052][ T1073] ? blk_rq_map_sg+0x1b10/0x1b10 [ 913.565347][ T1073] ? __sanitizer_cov_trace_const_cmp1+0x1/0x20 [ 913.577903][ T1073] ? blk_rq_merge_ok+0xad/0x6b0 [ 913.586640][ T1073] ? wbt_track+0xd0/0xd0 [ 913.597720][ T1073] __rq_qos_throttle+0x56/0xa0 [ 913.605046][ T1073] blk_mq_make_request+0x3d0/0x2280 [ 913.617124][ T1073] ? blk_mq_try_issue_directly+0x1c0/0x1c0 [ 913.625852][ T1073] ? __kasan_check_read+0x11/0x20 [ 913.637806][ T1073] generic_make_request+0x23c/0xb50 [ 913.667711][ T1073] ? blk_queue_enter+0xe30/0xe30 [ 913.672717][ T1073] ? lock_downgrade+0x920/0x920 [ 913.682821][ T1073] submit_bio+0x113/0x600 [ 913.693839][ T1073] ? submit_bio+0x113/0x600 [ 913.709720][ T1073] ? generic_make_request+0xb50/0xb50 [ 913.728705][ T1073] ? bvec_alloc+0x2f0/0x2f0 [ 913.733261][ T1073] ? bio_add_page+0x1ac/0x220 [ 913.743802][ T1073] blk_next_bio+0x4a/0x60 [ 913.760406][ T1073] __blkdev_issue_zero_pages+0x151/0x430 [ 913.772748][ T1073] blkdev_issue_zeroout+0x434/0x4c0 [ 913.793382][ T1073] ? __blkdev_issue_zeroout+0x1a0/0x1a0 [ 913.836081][ T1073] ? lock_downgrade+0x920/0x920 [ 913.851977][ T1073] ? handle_mm_fault+0x292/0xa90 [ 913.865910][ T1073] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 913.881815][ T1073] ? common_file_perm+0x238/0x720 [ 913.892036][ T1073] blkdev_fallocate+0x2fc/0x410 [ 913.911812][ T1073] ? blkdev_read_iter+0x190/0x190 [ 913.923519][ T1073] vfs_fallocate+0x4aa/0xa50 [ 913.934124][ T1073] ksys_fallocate+0x58/0xa0 [ 913.955495][ T1073] __x64_sys_fallocate+0x97/0xf0 [ 913.979168][ T1073] do_syscall_64+0xfa/0x760 [ 914.028601][ T1073] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 914.034534][ T1073] RIP: 0033:0x441269 [ 914.045396][ T1073] Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 914.065410][ T1073] RSP: 002b:00007ffc6d0e55e8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 914.086299][ T1073] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 914.099248][ T1073] RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 [ 914.120919][ T1073] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 914.140453][ T1073] R10: 0000400000000200 R11: 0000000000000246 R12: 0000000000401fe0 [ 914.196893][ T1073] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 914.204949][ T1073] INFO: task syz-executor350:8665 can't die for more than 147 seconds. [ 914.217395][ T1073] syz-executor350 D27256 8665 8657 0x00004006 [ 914.224485][ T1073] Call Trace: [ 914.232882][ T1073] __schedule+0x94a/0x1e70 [ 914.240819][ T1073] ? cpuacct_charge+0x1db/0x360 [ 914.246026][ T1073] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 914.255453][ T1073] ? preempt_schedule+0x4b/0x60 [ 914.260811][ T1073] ? __delayacct_blkio_start+0x41/0x80 [ 914.268852][ T1073] ? __schedule+0x8f7/0x1e70 [ 914.277561][ T1073] ? find_held_lock+0x35/0x130 [ 914.282691][ T1073] ? __schedule+0x8f7/0x1e70 [ 914.287832][ T1073] ? lock_downgrade+0x920/0x920 [ 914.293038][ T1073] ? blk_mq_insert_requests+0x640/0x640 [ 914.299024][ T1073] ? __schedule+0x94a/0x1e70 [ 914.308924][ T1073] ? __sched_text_start+0x8/0x8 [ 914.314273][ T1073] ? blk_insert_cloned_request+0x530/0x530 [ 914.327310][ T1073] ? schedule+0xd9/0x260 [ 914.341656][ T1073] ? io_schedule_prepare+0xb4/0xe0 [ 914.346820][ T1073] ? io_schedule+0xc/0x70 [ 914.355906][ T1073] ? rq_qos_wait+0x301/0x3f0 [ 914.370042][ T1073] ? rq_depth_scale_down+0x140/0x140 [ 914.380444][ T1073] ? elv_merge+0x185/0x3b0 [ 914.384908][ T1073] ? blk_queue_enter+0xe30/0xe30 [ 914.394660][ T1073] ? sysv68_partition+0x980/0x980 [ 914.411344][ T1073] ? wbt_exit+0xb0/0xb0 [ 914.437050][ T1073] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 914.442995][ T1073] ? wbt_wait+0x20b/0x370 [ 914.452476][ T1073] ? wbt_track+0xd0/0xd0 [ 914.457578][ T1073] ? blk_rq_map_sg+0x1b10/0x1b10 [ 914.463362][ T1073] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 914.478591][ T1073] ? blk_rq_merge_ok+0xad/0x6b0 [ 914.485083][ T1073] ? wbt_track+0xd0/0xd0 [ 914.518217][ T1073] ? __rq_qos_throttle+0x56/0xa0 [ 914.523223][ T1073] ? blk_mq_make_request+0x3d0/0x2280 [ 914.535256][ T1073] ? blk_mq_try_issue_directly+0x1c0/0x1c0 [ 914.557252][ T1073] ? __kasan_check_read+0x11/0x20 [ 914.562515][ T1073] ? mempool_alloc+0x176/0x380 [ 914.574902][ T1073] ? generic_make_request+0x23c/0xb50 [ 914.632563][ T1073] ? blk_queue_enter+0xe30/0xe30 [ 914.650462][ T1073] ? lock_downgrade+0x920/0x920 [ 914.664570][ T1073] ? submit_bio+0x113/0x600 [ 914.674157][ T1073] ? submit_bio+0x113/0x600 [ 914.682503][ T1073] ? generic_make_request+0xb50/0xb50 [ 914.688467][ T1073] ? bvec_alloc+0x2f0/0x2f0 [ 914.693368][ T1073] ? bio_add_page+0x1ac/0x220 [ 914.699488][ T1073] ? blk_next_bio+0x4a/0x60 [ 914.707213][ T1073] ? __blkdev_issue_zero_pages+0x151/0x430 [ 914.717016][ T1073] ? blkdev_issue_zeroout+0x434/0x4c0 [ 914.722791][ T1073] ? __blkdev_issue_zeroout+0x1a0/0x1a0 [ 914.737215][ T1073] ? lock_downgrade+0x920/0x920 [ 914.744373][ T1073] ? handle_mm_fault+0x292/0xa90 [ 914.749756][ T1073] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 914.777630][ T1073] ? common_file_perm+0x238/0x720 [ 914.782719][ T1073] ? blkdev_fallocate+0x2fc/0x410 [ 914.824920][ T1073] ? blkdev_read_iter+0x190/0x190 [ 914.837389][ T1073] ? vfs_fallocate+0x4aa/0xa50 [ 914.851009][ T1073] ? ksys_fallocate+0x58/0xa0 [ 914.855734][ T1073] ? __x64_sys_fallocate+0x97/0xf0 [ 914.866570][ T1073] ? do_syscall_64+0xfa/0x760 [ 914.880136][ T1073] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 914.887642][ T1073] [ 914.887642][ T1073] Showing all locks held in the system: [ 914.895395][ T1073] 1 lock held by khungtaskd/1073: [ 914.916173][ T1073] #0: ffffffff88fab740 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 [ 914.931171][ T1073] 1 lock held by rsyslogd/8538: [ 914.936262][ T1073] #0: ffff888098390620 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 914.952313][ T1073] 2 locks held by getty/8628: [ 914.967041][ T1073] #0: ffff8880a1d05090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 914.976626][ T1073] #1: ffffc90005f252e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 914.999209][ T1073] 2 locks held by getty/8629: [ 915.004480][ T1073] #0: ffff8880a9790090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 915.025192][ T1073] #1: ffffc90005f4b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 915.047139][ T1073] 2 locks held by getty/8630: [ 915.052137][ T1073] #0: ffff8880a47ae090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 915.097832][ T1073] #1: ffffc90005f3f2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 915.113148][ T1073] 2 locks held by getty/8631: [ 915.127038][ T1073] #0: ffff88809fc6a090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 915.150886][ T1073] #1: ffffc90005f472e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 915.165716][ T1073] 2 locks held by getty/8632: [ 915.175051][ T1073] #0: ffff8880946cf090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 915.211897][ T1073] #1: ffffc90005f2d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 915.230464][ T1073] 2 locks held by getty/8633: [ 915.235367][ T1073] #0: ffff888092b6e090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 915.254228][ T1073] #1: ffffc90005f432e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 915.278077][ T1073] 2 locks held by getty/8634: [ 915.293875][ T1073] #0: ffff88809a971090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 915.308441][ T1073] #1: ffffc90005f192e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 915.334749][ T1073] [ 915.350392][ T1073] ============================================= [ 915.350392][ T1073] [ 915.365905][ T1073] NMI backtrace for cpu 1 [ 915.370342][ T1073] CPU: 1 PID: 1073 Comm: khungtaskd Not tainted 5.4.0-rc3-next-20191018 #0 [ 915.378924][ T1073] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 915.388989][ T1073] Call Trace: [ 915.392354][ T1073] dump_stack+0x172/0x1f0 [ 915.396698][ T1073] nmi_cpu_backtrace.cold+0x70/0xb2 [ 915.401899][ T1073] ? vprintk_func+0x86/0x189 [ 915.406494][ T1073] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 915.412137][ T1073] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 915.418131][ T1073] arch_trigger_cpumask_backtrace+0x14/0x20 [ 915.424024][ T1073] watchdog+0xc8f/0x1350 [ 915.428292][ T1073] kthread+0x361/0x430 [ 915.432361][ T1073] ? reset_hung_task_detector+0x30/0x30 [ 915.437908][ T1073] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 915.443643][ T1073] ret_from_fork+0x24/0x30 [ 915.448233][ T1073] Sending NMI from CPU 1 to CPUs 0: [ 915.453973][ C0] NMI backtrace for cpu 0 [ 915.453979][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.4.0-rc3-next-20191018 #0 [ 915.453984][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 915.453988][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 [ 915.453998][ C0] Code: 89 25 c4 94 3d 09 41 bc f4 ff ff ff e8 1d 8c e9 ff 48 c7 05 ae 94 3d 09 00 00 00 00 e9 77 e9 ff ff 90 90 90 90 90 90 90 90 90 <55> 48 89 e5 65 48 8b 04 25 80 fe 01 00 65 8b 15 74 b0 8e 7e 81 e2 [ 915.454002][ C0] RSP: 0018:ffff8880a989f9f0 EFLAGS: 00000092 [ 915.454009][ C0] RAX: 0000000000000286 RBX: ffff88809962f0c0 RCX: ffffffff81915655 [ 915.454013][ C0] RDX: 0000000000000100 RSI: ffff88809962f0c0 RDI: ffff88821acc9540 [ 915.454017][ C0] RBP: ffff8880a989fa28 R08: ffff8880a9886240 R09: ffff8880a9886ad8 [ 915.454022][ C0] R10: fffffbfff138fe50 R11: ffffffff89c7f287 R12: ffff88821acc9540 [ 915.454026][ C0] R13: ffff88809962f0c0 R14: 0000000000000286 R15: 0000000000000002 [ 915.454031][ C0] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 915.454035][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 915.454040][ C0] CR2: ffffffffff600400 CR3: 000000008fe26000 CR4: 00000000001406f0 [ 915.454044][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 915.454049][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 915.454051][ C0] Call Trace: [ 915.454054][ C0] ? trace_hardirqs_off+0x16/0x240 [ 915.454058][ C0] ? blk_account_io_completion+0x392/0x500 [ 915.454061][ C0] kmem_cache_free+0x5b/0x320 [ 915.454064][ C0] mempool_free_slab+0x1e/0x30 [ 915.454067][ C0] ? mempool_free+0x370/0x370 [ 915.454070][ C0] mempool_free+0xeb/0x370 [ 915.454073][ C0] bio_free+0x268/0x420 [ 915.454076][ C0] bio_put+0xda/0x110 [ 915.454079][ C0] bio_endio+0x2c2/0xaf0 [ 915.454082][ C0] blk_update_request+0x49e/0x10d0 [ 915.454086][ C0] ? blk_account_io_completion+0x500/0x500 [ 915.454089][ C0] ? blk_mq_free_request+0x3cc/0x580 [ 915.454092][ C0] blk_mq_end_request+0x5b/0x560 [ 915.454095][ C0] end_cmd+0x111/0x310 [ 915.454098][ C0] null_complete_rq+0x19/0x20 [ 915.454102][ C0] blk_done_softirq+0x2fe/0x4d0 [ 915.454105][ C0] ? blk_try_merge+0x230/0x230 [ 915.454108][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 915.454112][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 915.454115][ C0] ? trace_hardirqs_on+0x67/0x240 [ 915.454118][ C0] __do_softirq+0x262/0x98c [ 915.454121][ C0] ? takeover_tasklets+0x820/0x820 [ 915.454124][ C0] run_ksoftirqd+0x8e/0x110 [ 915.454127][ C0] smpboot_thread_fn+0x6a3/0xa40 [ 915.454131][ C0] ? smpboot_register_percpu_thread+0x390/0x390 [ 915.454135][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 915.454138][ C0] ? __kthread_parkme+0x108/0x1c0 [ 915.454141][ C0] ? __kasan_check_read+0x11/0x20 [ 915.454144][ C0] kthread+0x361/0x430 [ 915.454147][ C0] ? smpboot_register_percpu_thread+0x390/0x390 [ 915.454151][ C0] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 915.454154][ C0] ret_from_fork+0x24/0x30 [ 915.757880][ T1073] Kernel panic - not syncing: hung_task: blocked tasks [ 915.764786][ T1073] CPU: 1 PID: 1073 Comm: khungtaskd Not tainted 5.4.0-rc3-next-20191018 #0 [ 915.773372][ T1073] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 915.783426][ T1073] Call Trace: [ 915.786722][ T1073] dump_stack+0x172/0x1f0 [ 915.791058][ T1073] panic+0x2e3/0x75c [ 915.794954][ T1073] ? add_taint.cold+0x16/0x16 [ 915.799639][ T1073] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 915.805277][ T1073] ? ___preempt_schedule+0x16/0x20 [ 915.810395][ T1073] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 915.816556][ T1073] ? nmi_trigger_cpumask_backtrace+0x24c/0x28b [ 915.822714][ T1073] ? nmi_trigger_cpumask_backtrace+0x256/0x28b [ 915.828875][ T1073] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 915.835034][ T1073] watchdog+0xca0/0x1350 [ 915.839287][ T1073] kthread+0x361/0x430 [ 915.843361][ T1073] ? reset_hung_task_detector+0x30/0x30 [ 915.849012][ T1073] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 915.854753][ T1073] ret_from_fork+0x24/0x30 [ 915.860679][ T1073] Kernel Offset: disabled [ 915.865015][ T1073] Rebooting in 86400 seconds..