[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 71.686001][ T26] kauditd_printk_skb: 4 callbacks suppressed [ 71.686013][ T26] audit: type=1800 audit(1573362728.003:29): pid=9479 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 71.717534][ T26] audit: type=1800 audit(1573362728.013:30): pid=9479 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.192' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 946.568477][ T1079] INFO: task syz-executor794:9636 can't die for more than 143 seconds. [ 946.592821][ T1079] syz-executor794 R running task 27336 9636 9634 0x00004006 [ 946.612268][ T1079] Call Trace: [ 946.617666][ T1079] __schedule+0x94a/0x1e70 [ 946.643589][ T1079] ? __sched_text_start+0x8/0x8 [ 946.659721][ T1079] ? blk_insert_cloned_request+0x530/0x530 [ 946.673918][ T1079] schedule+0xdc/0x2b0 [ 946.708015][ T1079] ? wbt_exit+0xb0/0xb0 [ 946.713682][ T1079] io_schedule+0x1c/0x70 [ 946.718593][ T1079] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 946.725356][ T1079] ? rq_depth_scale_down+0x140/0x140 [ 946.732115][ T1079] ? blk_queue_enter+0xe30/0xe30 [ 946.741712][ T1079] ? sysv68_partition+0x980/0x980 [ 946.751416][ T1079] ? wbt_exit+0xb0/0xb0 [ 946.758165][ T1079] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 946.765893][ T1079] ? wbt_wait+0x20b/0x370 [ 946.770487][ T1079] ? wbt_track+0xd0/0xd0 [ 946.777587][ T1079] ? blk_rq_map_sg+0x1b10/0x1b10 [ 946.803075][ T1079] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 946.859377][ T1079] ? blk_rq_merge_ok+0xad/0x6b0 [ 946.864835][ T1079] ? wbt_track+0xd0/0xd0 [ 946.880713][ T1079] ? __rq_qos_throttle+0x56/0xa0 [ 946.888126][ T1079] ? blk_mq_make_request+0x3d0/0x2280 [ 946.915770][ T1079] ? blk_mq_try_issue_directly+0x1c0/0x1c0 [ 946.954312][ T1079] ? __kasan_check_read+0x11/0x20 [ 946.969478][ T1079] ? generic_make_request+0x23c/0xb50 [ 946.995250][ T1079] ? blk_queue_enter+0xe30/0xe30 [ 947.011579][ T1079] ? lock_downgrade+0x920/0x920 [ 947.032996][ T1079] ? submit_bio+0x113/0x600 [ 947.037674][ T1079] ? submit_bio+0x113/0x600 [ 947.048257][ T1079] ? generic_make_request+0xb50/0xb50 [ 947.082296][ T1079] ? bvec_alloc+0x2f0/0x2f0 [ 947.087755][ T1079] ? bio_add_page+0x1ac/0x220 [ 947.113762][ T1079] ? blk_next_bio+0x4a/0x60 [ 947.132960][ T1079] ? __blkdev_issue_zero_pages+0x151/0x430 [ 947.155613][ T1079] ? blkdev_issue_zeroout+0x434/0x4c0 [ 947.214730][ T1079] ? __blkdev_issue_zeroout+0x1a0/0x1a0 [ 947.230095][ T1079] ? lock_downgrade+0x920/0x920 [ 947.254109][ T1079] ? handle_mm_fault+0x292/0xa90 [ 947.288703][ T1079] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 947.294514][ T1079] ? common_file_perm+0x238/0x720 [ 947.342371][ T1079] ? blkdev_fallocate+0x2fc/0x410 [ 947.363744][ T1079] ? blkdev_read_iter+0x190/0x190 [ 947.378944][ T1079] ? vfs_fallocate+0x4aa/0xa50 [ 947.387162][ T1079] ? ksys_fallocate+0x58/0xa0 [ 947.436702][ T1079] ? __x64_sys_fallocate+0x97/0xf0 [ 947.454961][ T1079] ? do_syscall_64+0xfa/0x760 [ 947.470170][ T1079] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 947.488860][ T1079] INFO: task syz-executor794:9641 can't die for more than 144 seconds. [ 947.497711][ T1079] syz-executor794 D26312 9641 9640 0x00004006 [ 947.514714][ T1079] Call Trace: [ 947.526430][ T1079] __schedule+0x94a/0x1e70 [ 947.542968][ T1079] ? __sched_text_start+0x8/0x8 [ 947.584724][ T1079] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 947.595654][ T1079] ? __kasan_check_read+0x11/0x20 [ 947.639091][ T1079] ? preempt_schedule+0x4b/0x60 [ 947.644714][ T1079] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 947.658533][ T1079] ? __kasan_check_read+0x11/0x20 [ 947.666832][ T1079] ? preempt_schedule+0x4b/0x60 [ 947.681898][ T1079] ? ___preempt_schedule+0x16/0x18 [ 947.694713][ T1079] ? blk_mq_sched_insert_requests+0x404/0x680 [ 947.727387][ T1079] ? blk_mq_sched_insert_requests+0x5eb/0x680 [ 947.750481][ T1079] ? __schedule+0x8f7/0x1e70 [ 947.755622][ T1079] ? find_held_lock+0x35/0x130 [ 947.766199][ T1079] ? __schedule+0x8f7/0x1e70 [ 947.800938][ T1079] ? lock_downgrade+0x920/0x920 [ 947.806341][ T1079] ? __schedule+0x94a/0x1e70 [ 947.820215][ T1079] ? blk_flush_plug_list+0x349/0x520 [ 947.835455][ T1079] ? trace_hardirqs_on+0x67/0x240 [ 947.851154][ T1079] ? __sched_text_start+0x8/0x8 [ 947.871371][ T1079] ? blk_insert_cloned_request+0x530/0x530 [ 947.881917][ T1079] ? schedule+0xdc/0x2b0 [ 947.886480][ T1079] ? __kasan_check_read+0x11/0x20 [ 947.923686][ T1079] ? wbt_exit+0xb0/0xb0 [ 947.928698][ T1079] ? io_schedule+0x1c/0x70 [ 947.939038][ T1079] ? rq_qos_wait+0x301/0x3f0 [ 947.944133][ T1079] ? rq_depth_scale_down+0x140/0x140 [ 947.963067][ T1079] ? blk_queue_enter+0xe30/0xe30 [ 948.012986][ T1079] ? sysv68_partition+0x980/0x980 [ 948.025863][ T1079] ? wbt_exit+0xb0/0xb0 [ 948.062515][ T1079] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 948.086742][ T1079] ? wbt_wait+0x20b/0x370 [ 948.091963][ T1079] ? wbt_track+0xd0/0xd0 [ 948.117184][ T1079] ? blk_rq_map_sg+0x1b10/0x1b10 [ 948.129115][ T1079] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 948.136868][ T1079] ? blk_rq_merge_ok+0xad/0x6b0 [ 948.144878][ T1079] ? wbt_track+0xd0/0xd0 [ 948.165399][ T1079] ? __rq_qos_throttle+0x56/0xa0 [ 948.193064][ T1079] ? blk_mq_make_request+0x3d0/0x2280 [ 948.236397][ T1079] ? blk_mq_try_issue_directly+0x1c0/0x1c0 [ 948.250644][ T1079] ? __kasan_check_read+0x11/0x20 [ 948.269542][ T1079] ? generic_make_request+0x23c/0xb50 [ 948.275252][ T1079] ? blk_queue_enter+0xe30/0xe30 [ 948.289217][ T1079] ? lock_downgrade+0x920/0x920 [ 948.311644][ T1079] ? submit_bio+0x113/0x600 [ 948.327387][ T1079] ? submit_bio+0x113/0x600 [ 948.385387][ T1079] ? generic_make_request+0xb50/0xb50 [ 948.410090][ T1079] ? bvec_alloc+0x2f0/0x2f0 [ 948.415469][ T1079] ? bio_add_page+0x1ac/0x220 [ 948.445323][ T1079] ? blk_next_bio+0x4a/0x60 [ 948.463984][ T1079] ? __blkdev_issue_zero_pages+0x151/0x430 [ 948.495559][ T1079] ? blkdev_issue_zeroout+0x434/0x4c0 [ 948.555480][ T1079] ? __blkdev_issue_zeroout+0x1a0/0x1a0 [ 948.569219][ T1079] ? lock_downgrade+0x920/0x920 [ 948.602016][ T1079] ? handle_mm_fault+0x292/0xa90 [ 948.607237][ T1079] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 948.662306][ T1079] ? common_file_perm+0x238/0x720 [ 948.699663][ T1079] ? blkdev_fallocate+0x2fc/0x410 [ 948.713247][ T1079] ? blkdev_read_iter+0x190/0x190 [ 948.729710][ T1079] ? vfs_fallocate+0x4aa/0xa50 [ 948.737582][ T1079] ? ksys_fallocate+0x58/0xa0 [ 948.754728][ T1079] ? __x64_sys_fallocate+0x97/0xf0 [ 948.785170][ T1079] ? do_syscall_64+0xfa/0x760 [ 948.796069][ T1079] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 948.809765][ T1079] INFO: task syz-executor794:9642 can't die for more than 145 seconds. [ 948.824146][ T1079] syz-executor794 D27208 9642 9639 0x00004006 [ 948.864165][ T1079] Call Trace: [ 948.890994][ T1079] __schedule+0x94a/0x1e70 [ 948.895516][ T1079] ? __sched_text_start+0x8/0x8 [ 948.907117][ T1079] ? blk_insert_cloned_request+0x530/0x530 [ 948.946175][ T1079] ? prepare_to_wait_exclusive+0x123/0x320 [ 948.960318][ T1079] schedule+0xdc/0x2b0 [ 948.966319][ T1079] io_schedule+0x1c/0x70 [ 948.976422][ T1079] rq_qos_wait+0x301/0x3f0 [ 948.991240][ T1079] ? rq_depth_scale_down+0x140/0x140 [ 948.996945][ T1079] ? blk_queue_enter+0xe30/0xe30 [ 949.011655][ T1079] ? sysv68_partition+0x980/0x980 [ 949.017211][ T1079] ? wbt_exit+0xb0/0xb0 [ 949.033566][ T1079] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 949.052511][ T1079] wbt_wait+0x20b/0x370 [ 949.057681][ T1079] ? wbt_track+0xd0/0xd0 [ 949.069358][ T1079] ? blk_rq_map_sg+0x1b10/0x1b10 [ 949.075923][ T1079] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 949.097120][ T1079] ? blk_rq_merge_ok+0xad/0x6b0 [ 949.115340][ T1079] ? wbt_track+0xd0/0xd0 [ 949.127527][ T1079] __rq_qos_throttle+0x56/0xa0 [ 949.179142][ T1079] blk_mq_make_request+0x3d0/0x2280 [ 949.185621][ T1079] ? blk_mq_try_issue_directly+0x1c0/0x1c0 [ 949.219753][ T1079] ? __kasan_check_read+0x11/0x20 [ 949.232123][ T1079] generic_make_request+0x23c/0xb50 [ 949.243726][ T1079] ? blk_queue_enter+0xe30/0xe30 [ 949.260065][ T1079] ? lock_downgrade+0x920/0x920 [ 949.278880][ T1079] submit_bio+0x113/0x600 [ 949.283408][ T1079] ? submit_bio+0x113/0x600 [ 949.302856][ T1079] ? generic_make_request+0xb50/0xb50 [ 949.344023][ T1079] ? bvec_alloc+0x2f0/0x2f0 [ 949.366910][ T1079] ? bio_add_page+0x1ac/0x220 [ 949.385281][ T1079] blk_next_bio+0x4a/0x60 [ 949.432326][ T1079] __blkdev_issue_zero_pages+0x151/0x430 [ 949.457942][ T1079] blkdev_issue_zeroout+0x434/0x4c0 [ 949.463756][ T1079] ? __blkdev_issue_zeroout+0x1a0/0x1a0 [ 949.479726][ T1079] ? lock_downgrade+0x920/0x920 [ 949.486875][ T1079] ? handle_mm_fault+0x292/0xa90 [ 949.498162][ T1079] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 949.517458][ T1079] ? common_file_perm+0x238/0x720 [ 949.554827][ T1079] blkdev_fallocate+0x2fc/0x410 [ 949.592012][ T1079] ? blkdev_read_iter+0x190/0x190 [ 949.603811][ T1079] vfs_fallocate+0x4aa/0xa50 [ 949.634913][ T1079] ksys_fallocate+0x58/0xa0 [ 949.648336][ T1079] __x64_sys_fallocate+0x97/0xf0 [ 949.654128][ T1079] do_syscall_64+0xfa/0x760 [ 949.703525][ T1079] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 949.717736][ T1079] RIP: 0033:0x441269 [ 949.727403][ T1079] Code: 66 69 67 20 69 73 20 6e 6f 74 20 63 6c 65 61 6e 2e 0a 43 68 65 63 6b 20 65 72 72 6f 72 20 6c 6f 67 20 66 6f 72 20 64 65 74 61 <69> 6c 73 2c 20 66 69 78 20 65 72 72 6f 72 73 20 61 6e 64 20 72 65 [ 949.758779][ T1079] RSP: 002b:00007ffd69dd18c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 949.790335][ T1079] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 949.845142][ T1079] RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 [ 949.879211][ T1079] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 949.894745][ T1079] R10: 0000400000000200 R11: 0000000000000246 R12: 0000000000401fe0 [ 949.928273][ T1079] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 949.942722][ T1079] INFO: task syz-executor794:9643 can't die for more than 146 seconds. [ 949.965184][ T1079] syz-executor794 D27336 9643 9637 0x00004006 [ 949.998606][ T1079] Call Trace: [ 950.017414][ T1079] __schedule+0x94a/0x1e70 [ 950.055650][ T1079] ? __sched_text_start+0x8/0x8 [ 950.087946][ T1079] ? blk_insert_cloned_request+0x530/0x530 [ 950.093850][ T1079] ? prepare_to_wait_exclusive+0x123/0x320 [ 950.165036][ T1079] schedule+0xdc/0x2b0 [ 950.188830][ T1079] ? wbt_exit+0xb0/0xb0 [ 950.193118][ T1079] io_schedule+0x1c/0x70 [ 950.197628][ T1079] rq_qos_wait+0x301/0x3f0 [ 950.218214][ T1079] ? rq_depth_scale_down+0x140/0x140 [ 950.235169][ T1079] ? blk_queue_enter+0xe30/0xe30 [ 950.284161][ T1079] ? sysv68_partition+0x980/0x980 [ 950.297425][ T1079] ? wbt_exit+0xb0/0xb0 [ 950.321702][ T1079] ? lock_downgrade+0x920/0x920 [ 950.326812][ T1079] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 950.338985][ T1079] wbt_wait+0x20b/0x370 [ 950.346076][ T1079] ? wbt_track+0xd0/0xd0 [ 950.357469][ T1079] ? blk_rq_map_sg+0x1b10/0x1b10 [ 950.413209][ T1079] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 950.440343][ T1079] ? blk_rq_merge_ok+0xad/0x6b0 [ 950.445849][ T1079] ? wbt_track+0xd0/0xd0 [ 950.457372][ T1079] __rq_qos_throttle+0x56/0xa0 [ 950.480332][ T1079] blk_mq_make_request+0x3d0/0x2280 [ 950.504939][ T1079] ? blk_mq_try_issue_directly+0x1c0/0x1c0 [ 950.518332][ T1079] ? __kasan_check_read+0x11/0x20 [ 950.524615][ T1079] generic_make_request+0x23c/0xb50 [ 950.550855][ T1079] ? blk_queue_enter+0xe30/0xe30 [ 950.583982][ T1079] ? lock_downgrade+0x920/0x920 [ 950.604861][ T1079] submit_bio+0x113/0x600 [ 950.626050][ T1079] ? submit_bio+0x113/0x600 [ 950.651548][ T1079] ? generic_make_request+0xb50/0xb50 [ 950.673741][ T1079] ? bvec_alloc+0x2f0/0x2f0 [ 950.717885][ T1079] ? bio_add_page+0x1ac/0x220 [ 950.723582][ T1079] blk_next_bio+0x4a/0x60 [ 950.758671][ T1079] __blkdev_issue_zero_pages+0x151/0x430 [ 950.766450][ T1079] blkdev_issue_zeroout+0x434/0x4c0 [ 950.777625][ T1079] ? __blkdev_issue_zeroout+0x1a0/0x1a0 [ 950.793251][ T1079] ? lock_downgrade+0x920/0x920 [ 950.816613][ T1079] ? handle_mm_fault+0x292/0xa90 [ 950.843008][ T1079] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 950.864050][ T1079] ? common_file_perm+0x238/0x720 [ 950.881904][ T1079] blkdev_fallocate+0x2fc/0x410 [ 950.887225][ T1079] ? blkdev_read_iter+0x190/0x190 [ 950.907673][ T1079] vfs_fallocate+0x4aa/0xa50 [ 950.921256][ T1079] ksys_fallocate+0x58/0xa0 [ 950.942980][ T1079] __x64_sys_fallocate+0x97/0xf0 [ 951.012999][ T1079] do_syscall_64+0xfa/0x760 [ 951.054239][ T1079] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 951.072342][ T1079] RIP: 0033:0x441269 [ 951.109353][ T1079] 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 [ 951.153546][ T1079] RSP: 002b:00007ffd69dd18c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 951.199355][ T1079] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 951.253001][ T1079] RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 [ 951.286368][ T1079] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 951.311616][ T1079] R10: 0000400000000200 R11: 0000000000000246 R12: 0000000000401fe0 [ 951.344025][ T1079] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 951.364825][ T1079] INFO: task syz-executor794:9644 can't die for more than 148 seconds. [ 951.444415][ T1079] syz-executor794 R27256 9644 9635 0x0000400e [ 951.490515][ T1079] Call Trace: [ 951.506617][ T1079] __schedule+0x94a/0x1e70 [ 951.565661][ T1079] ? __sched_text_start+0x8/0x8 [ 951.584651][ T1079] ? blk_insert_cloned_request+0x530/0x530 [ 951.619766][ T1079] ? prepare_to_wait_exclusive+0x123/0x320 [ 951.650736][ T1079] schedule+0xdc/0x2b0 [ 951.669880][ T1079] io_schedule+0x1c/0x70 [ 951.689102][ T1079] rq_qos_wait+0x301/0x3f0 [ 951.696980][ T1079] ? rq_depth_scale_down+0x140/0x140 [ 951.759436][ T1079] ? blk_queue_enter+0xe30/0xe30 [ 951.812795][ T1079] ? sysv68_partition+0x980/0x980 [ 951.839899][ T1079] ? wbt_exit+0xb0/0xb0 [ 951.854684][ T1079] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 951.905816][ T1079] wbt_wait+0x20b/0x370 [ 951.928076][ T1079] ? wbt_track+0xd0/0xd0 [ 951.935775][ T1079] ? blk_rq_map_sg+0x1b10/0x1b10 [ 951.955893][ T1079] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 951.982813][ T1079] ? blk_rq_merge_ok+0xad/0x6b0 [ 952.012337][ T1079] ? wbt_track+0xd0/0xd0 [ 952.036835][ T1079] __rq_qos_throttle+0x56/0xa0 [ 952.054567][ T1079] blk_mq_make_request+0x3d0/0x2280 [ 952.070830][ T1079] ? blk_mq_try_issue_directly+0x1c0/0x1c0 [ 952.090442][ T1079] ? __kasan_check_read+0x11/0x20 [ 952.103278][ T1079] ? __schedule+0x94a/0x1e70 [ 952.116504][ T1079] generic_make_request+0x23c/0xb50 [ 952.173067][ T1079] ? blk_queue_enter+0xe30/0xe30 [ 952.201333][ T1079] ? lock_downgrade+0x920/0x920 [ 952.214611][ T1079] submit_bio+0x113/0x600 [ 952.244880][ T1079] ? submit_bio+0x113/0x600 [ 952.256420][ T1079] ? generic_make_request+0xb50/0xb50 [ 952.285669][ T1079] ? bvec_alloc+0x2f0/0x2f0 [ 952.318465][ T1079] ? bio_add_page+0x1ac/0x220 [ 952.334431][ T1079] blk_next_bio+0x4a/0x60 [ 952.359396][ T1079] __blkdev_issue_zero_pages+0x151/0x430 [ 952.392359][ T1079] blkdev_issue_zeroout+0x434/0x4c0 [ 952.436633][ T1079] ? __blkdev_issue_zeroout+0x1a0/0x1a0 [ 952.456374][ T1079] ? lock_downgrade+0x920/0x920 [ 952.468517][ T1079] ? handle_mm_fault+0x292/0xa90 [ 952.485928][ T1079] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 952.501223][ T1079] ? common_file_perm+0x238/0x720 [ 952.527665][ T1079] blkdev_fallocate+0x2fc/0x410 [ 952.539655][ T1079] ? blkdev_read_iter+0x190/0x190 [ 952.547588][ T1079] vfs_fallocate+0x4aa/0xa50 [ 952.570040][ T1079] ksys_fallocate+0x58/0xa0 [ 952.605294][ T1079] __x64_sys_fallocate+0x97/0xf0 [ 952.638694][ T1079] do_syscall_64+0xfa/0x760 [ 952.655384][ T1079] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 952.690494][ T1079] RIP: 0033:0x441269 [ 952.704522][ T1079] Code: 66 69 67 20 69 73 20 6e 6f 74 20 63 6c 65 61 6e 2e 0a 43 68 65 63 6b 20 65 72 72 6f 72 20 6c 6f 67 20 66 6f 72 20 64 65 74 61 <69> 6c 73 2c 20 66 69 78 20 65 72 72 6f 72 73 20 61 6e 64 20 72 65 [ 952.750111][ T1079] RSP: 002b:00007ffd69dd18c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 952.802918][ T1079] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 952.817021][ T1079] RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 [ 952.859340][ T1079] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 952.882440][ T1079] R10: 0000400000000200 R11: 0000000000000246 R12: 0000000000401fe0 [ 952.915462][ T1079] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 952.924226][ T1079] INFO: task syz-executor794:9645 can't die for more than 149 seconds. [ 952.936369][ T1079] syz-executor794 D26712 9645 9638 0x00004006 [ 952.955829][ T1079] Call Trace: [ 952.973000][ T1079] __schedule+0x94a/0x1e70 [ 952.987147][ T1079] ? __sched_text_start+0x8/0x8 [ 953.032739][ T1079] ? blk_insert_cloned_request+0x530/0x530 [ 953.045360][ T1079] ? prepare_to_wait_exclusive+0x123/0x320 [ 953.058160][ T1079] schedule+0xdc/0x2b0 [ 953.085646][ T1079] ? wbt_exit+0xb0/0xb0 [ 953.122875][ T1079] io_schedule+0x1c/0x70 [ 953.135536][ T1079] rq_qos_wait+0x301/0x3f0 [ 953.157131][ T1079] ? rq_depth_scale_down+0x140/0x140 [ 953.181747][ T1079] ? blk_queue_enter+0xe30/0xe30 [ 953.213845][ T1079] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 953.240311][ T1079] ? wbt_exit+0xb0/0xb0 [ 953.245818][ T1079] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 953.270487][ T1079] wbt_wait+0x20b/0x370 [ 953.277328][ T1079] ? wbt_track+0xd0/0xd0 [ 953.327283][ T1079] ? blk_rq_map_sg+0x1b10/0x1b10 [ 953.348147][ T1079] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 953.354877][ T1079] ? blk_rq_merge_ok+0xad/0x6b0 [ 953.381920][ T1079] ? wbt_track+0xd0/0xd0 [ 953.387405][ T1079] __rq_qos_throttle+0x56/0xa0 [ 953.397148][ T1079] blk_mq_make_request+0x3d0/0x2280 [ 953.459201][ T1079] ? blk_mq_try_issue_directly+0x1c0/0x1c0 [ 953.473937][ T1079] ? __kasan_check_read+0x11/0x20 [ 953.505604][ T1079] generic_make_request+0x23c/0xb50 [ 953.528079][ T1079] ? blk_queue_enter+0xe30/0xe30 [ 953.533716][ T1079] ? lock_downgrade+0x920/0x920 [ 953.555672][ T1079] submit_bio+0x113/0x600 [ 953.590797][ T1079] ? submit_bio+0x113/0x600 [ 953.595990][ T1079] ? generic_make_request+0xb50/0xb50 [ 953.613763][ T1079] ? bvec_alloc+0x2f0/0x2f0 [ 953.646422][ T1079] ? bio_add_page+0x1ac/0x220 [ 953.662788][ T1079] blk_next_bio+0x4a/0x60 [ 953.686125][ T1079] __blkdev_issue_zero_pages+0x151/0x430 [ 953.714577][ T1079] blkdev_issue_zeroout+0x434/0x4c0 [ 953.733349][ T1079] ? __blkdev_issue_zeroout+0x1a0/0x1a0 [ 953.768236][ T1079] ? lock_downgrade+0x920/0x920 [ 953.791359][ T1079] ? handle_mm_fault+0x292/0xa90 [ 953.796392][ T1079] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 953.852198][ T1079] ? common_file_perm+0x238/0x720 [ 953.857324][ T1079] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 953.878165][ T1079] ? debug_smp_processor_id+0x33/0x18a [ 953.894798][ T1079] blkdev_fallocate+0x2fc/0x410 [ 953.941809][ T1079] ? blkdev_read_iter+0x190/0x190 [ 953.947034][ T1079] vfs_fallocate+0x4aa/0xa50 [ 953.967940][ T1079] ksys_fallocate+0x58/0xa0 [ 953.975432][ T1079] __x64_sys_fallocate+0x97/0xf0 [ 953.997515][ T1079] do_syscall_64+0xfa/0x760 [ 954.023848][ T1079] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 954.050232][ T1079] RIP: 0033:0x441269 [ 954.072016][ T1079] 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 [ 954.116877][ T1079] RSP: 002b:00007ffd69dd18c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 954.140848][ T1079] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 954.153785][ T1079] RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 [ 954.170781][ T1079] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 954.185408][ T1079] R10: 0000400000000200 R11: 0000000000000246 R12: 0000000000401fe0 [ 954.245903][ T1079] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 954.282855][ T1079] [ 954.282855][ T1079] Showing all locks held in the system: [ 954.320019][ T1079] 1 lock held by khungtaskd/1079: [ 954.349246][ T1079] #0: ffffffff88fab880 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 [ 954.364858][ T1079] 1 lock held by rsyslogd/9517: [ 954.409146][ T1079] #0: ffff8880a228b0e0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 954.450952][ T1079] 2 locks held by getty/9607: [ 954.456044][ T1079] #0: ffff88809403d090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 954.493246][ T1079] #1: ffffc90005f192e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 954.551003][ T1079] 2 locks held by getty/9608: [ 954.570760][ T1079] #0: ffff88808efed090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 954.604764][ T1079] #1: ffffc90005f2d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 954.632558][ T1079] 2 locks held by getty/9609: [ 954.681394][ T1079] #0: ffff88808ec0b090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 954.720823][ T1079] #1: ffffc90005f3d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 954.796762][ T1079] 2 locks held by getty/9610: [ 954.809187][ T1079] #0: ffff8880a8f2d090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 954.902602][ T1079] #1: ffffc90005f252e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 954.923748][ T1079] 2 locks held by getty/9611: [ 954.971315][ T1079] #0: ffff88809592c090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 955.004615][ T1079] #1: ffffc90005f412e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 955.053584][ T1079] 2 locks held by getty/9612: [ 955.066507][ T1079] #0: ffff888096c70090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 955.090006][ T1079] #1: ffffc90005f392e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 955.109196][ T1079] 2 locks held by getty/9613: [ 955.115873][ T1079] #0: ffff88809ae3b090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 955.133191][ T1079] #1: ffffc90005f112e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 955.151372][ T1079] [ 955.153770][ T1079] ============================================= [ 955.153770][ T1079] [ 955.168919][ T1079] NMI backtrace for cpu 1 [ 955.173342][ T1079] CPU: 1 PID: 1079 Comm: khungtaskd Not tainted 5.4.0-rc6-next-20191108 #0 [ 955.182769][ T1079] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 955.192851][ T1079] Call Trace: [ 955.196387][ T1079] dump_stack+0x197/0x210 [ 955.200758][ T1079] nmi_cpu_backtrace.cold+0x70/0xb2 [ 955.206144][ T1079] ? vprintk_func+0x86/0x189 [ 955.211113][ T1079] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 955.216901][ T1079] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 955.224056][ T1079] arch_trigger_cpumask_backtrace+0x14/0x20 [ 955.230739][ T1079] watchdog+0xc8f/0x1350 [ 955.235099][ T1079] kthread+0x361/0x430 [ 955.239210][ T1079] ? reset_hung_task_detector+0x30/0x30 [ 955.244910][ T1079] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 955.251190][ T1079] ret_from_fork+0x24/0x30 [ 955.255835][ T1079] Sending NMI from CPU 1 to CPUs 0: [ 955.263225][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.331 msecs [ 955.263652][ T1079] NMI backtrace for cpu 0 [ 955.263660][ T1079] CPU: 0 PID: 9644 Comm: syz-executor794 Not tainted 5.4.0-rc6-next-20191108 #0 [ 955.263666][ T1079] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 955.263670][ T1079] RIP: 0010:lock_release+0x4a3/0x960 [ 955.263682][ T1079] Code: 85 9c 03 00 00 48 c7 c0 60 20 f3 88 48 ba 00 00 00 00 00 fc ff df 41 c7 84 24 9c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 <0f> 85 8c 03 00 00 48 83 3d 9f 91 99 07 00 0f 84 7f 01 00 00 48 8b [ 955.263686][ T1079] RSP: 0018:ffff8880a2c97060 EFLAGS: 00000046 [ 955.263694][ T1079] RAX: 1ffffffff11e640c RBX: 1ffff11014592e11 RCX: 1ffff110140a95d2 [ 955.263699][ T1079] RDX: dffffc0000000000 RSI: 1ffff110140a95d9 RDI: ffff8880a054ae9c [ 955.263705][ T1079] RBP: ffff8880a2c97130 R08: 0000000000000002 R09: ffff8880a054ae98 [ 955.263717][ T1079] R10: fffffbfff1390258 R11: ffffffff89c812c7 R12: ffff8880a054a600 [ 955.263723][ T1079] R13: ffffffff83357c44 R14: ffff8880a2c97108 R15: ffff8880a054a600 [ 955.263728][ T1079] FS: 0000000001050880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 955.263733][ T1079] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 955.263738][ T1079] CR2: ffffffffff600400 CR3: 0000000096e1d000 CR4: 00000000001406f0 [ 955.263743][ T1079] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 955.263749][ T1079] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 955.263752][ T1079] Call Trace: [ 955.263755][ T1079] ? lock_downgrade+0x920/0x920 [ 955.263759][ T1079] ? lock_acquire+0x190/0x410 [ 955.263763][ T1079] ? blk_mq_start_request+0x434/0x7a0 [ 955.263767][ T1079] ktime_get+0xe2/0x2f0 [ 955.263770][ T1079] ? blk_mq_start_request+0x434/0x7a0 [ 955.263775][ T1079] ? blk_mq_dequeue_from_ctx+0x8c0/0x8c0 [ 955.263779][ T1079] blk_mq_start_request+0x434/0x7a0 [ 955.263782][ T1079] null_queue_rq+0x209/0x4f0 [ 955.263786][ T1079] blk_mq_dispatch_rq_list+0x9f8/0x19e0 [ 955.263790][ T1079] ? lock_downgrade+0x920/0x920 [ 955.263794][ T1079] ? elv_rqhash_del+0x131/0x170 [ 955.263798][ T1079] ? __check_heap_object+0x41/0xb3 [ 955.263802][ T1079] ? blk_mq_get_driver_tag+0x5f0/0x5f0 [ 955.263806][ T1079] ? dd_dispatch_request+0x242/0x8e0 [ 955.263810][ T1079] blk_mq_do_dispatch_sched+0x1a3/0x430 [ 955.263814][ T1079] ? blk_mq_sched_free_hctx_data+0x1f0/0x1f0 [ 955.263819][ T1079] blk_mq_sched_dispatch_requests+0x3f4/0x6d0 [ 955.263822][ T1079] ? lock_acquire+0x190/0x410 [ 955.263826][ T1079] ? blk_mq_sched_restart+0x90/0x90 [ 955.263830][ T1079] ? __kasan_check_read+0x11/0x20 [ 955.263834][ T1079] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 955.263838][ T1079] __blk_mq_run_hw_queue+0x1cc/0x2e0 [ 955.263842][ T1079] ? blk_mq_hctx_mark_pending+0x250/0x250 [ 955.263846][ T1079] __blk_mq_delay_run_hw_queue+0x53e/0x600 [ 955.263850][ T1079] blk_mq_run_hw_queue+0x191/0x340 [ 955.263854][ T1079] ? blk_mq_delay_run_hw_queue+0x30/0x30 [ 955.263858][ T1079] ? dd_dispatch_request+0x8e0/0x8e0 [ 955.263863][ T1079] blk_mq_sched_insert_requests+0x303/0x680 [ 955.263867][ T1079] blk_mq_flush_plug_list+0x87a/0xd90 [ 955.263871][ T1079] ? blk_mq_insert_requests+0x640/0x640 [ 955.263874][ T1079] ? lock_downgrade+0x920/0x920 [ 955.263878][ T1079] blk_flush_plug_list+0x349/0x520 [ 955.263882][ T1079] ? blk_account_io_start+0x460/0xcd0 [ 955.263886][ T1079] ? __sanitizer_cov_trace_cmp4+0x1/0x20 [ 955.263891][ T1079] ? blk_insert_cloned_request+0x530/0x530 [ 955.263896][ T1079] ? bio_to_wbt_flags.isra.0.part.0+0x1d0/0x1d0 [ 955.263899][ T1079] blk_mq_make_request+0xaa8/0x2280 [ 955.263903][ T1079] ? blk_mq_try_issue_directly+0x1c0/0x1c0 [ 955.263907][ T1079] ? __kasan_check_read+0x11/0x20 [ 955.263911][ T1079] generic_make_request+0x23c/0xb50 [ 955.263915][ T1079] ? blk_queue_enter+0xe30/0xe30 [ 955.263918][ T1079] ? lock_downgrade+0x920/0x920 [ 955.263922][ T1079] submit_bio+0x113/0x600 [ 955.263925][ T1079] ? submit_bio+0x113/0x600 [ 955.263929][ T1079] ? generic_make_request+0xb50/0xb50 [ 955.263933][ T1079] ? bvec_alloc+0x2f0/0x2f0 [ 955.263942][ T1079] ? bio_add_page+0x1ac/0x220 [ 955.263945][ T1079] blk_next_bio+0x4a/0x60 [ 955.263950][ T1079] __blkdev_issue_zero_pages+0x151/0x430 [ 955.263954][ T1079] blkdev_issue_zeroout+0x434/0x4c0 [ 955.263958][ T1079] ? __blkdev_issue_zeroout+0x1a0/0x1a0 [ 955.263961][ T1079] ? lock_downgrade+0x920/0x920 [ 955.263965][ T1079] ? handle_mm_fault+0x292/0xa90 [ 955.263969][ T1079] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 955.263973][ T1079] ? common_file_perm+0x238/0x720 [ 955.263976][ T1079] blkdev_fallocate+0x2fc/0x410 [ 955.263981][ T1079] ? blkdev_read_iter+0x190/0x190 [ 955.263984][ T1079] vfs_fallocate+0x4aa/0xa50 [ 955.263988][ T1079] ksys_fallocate+0x58/0xa0 [ 955.263992][ T1079] __x64_sys_fallocate+0x97/0xf0 [ 955.263996][ T1079] do_syscall_64+0xfa/0x760 [ 955.264001][ T1079] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 955.264004][ T1079] RIP: 0033:0x441269 [ 955.264015][ T1079] 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 [ 955.264019][ T1079] RSP: 002b:00007ffd69dd18c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 955.264028][ T1079] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 955.264033][ T1079] RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 [ 955.264038][ T1079] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 955.264044][ T1079] R10: 0000400000000200 R11: 0000000000000246 R12: 0000000000401fe0 [ 955.264049][ T1079] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 955.286203][ T1079] Kernel panic - not syncing: hung_task: blocked tasks [ 955.831565][ T1079] CPU: 1 PID: 1079 Comm: khungtaskd Not tainted 5.4.0-rc6-next-20191108 #0 [ 955.841291][ T1079] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 955.852234][ T1079] Call Trace: [ 955.855566][ T1079] dump_stack+0x197/0x210 [ 955.860333][ T1079] panic+0x2e3/0x75c [ 955.864356][ T1079] ? add_taint.cold+0x16/0x16 [ 955.869270][ T1079] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 955.875042][ T1079] ? ___preempt_schedule+0x16/0x18 [ 955.880462][ T1079] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 955.886875][ T1079] ? nmi_trigger_cpumask_backtrace+0x24c/0x28b [ 955.893295][ T1079] ? nmi_trigger_cpumask_backtrace+0x256/0x28b [ 955.900441][ T1079] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 955.906894][ T1079] watchdog+0xca0/0x1350 [ 955.911175][ T1079] kthread+0x361/0x430 [ 955.915374][ T1079] ? reset_hung_task_detector+0x30/0x30 [ 955.921044][ T1079] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 955.927093][ T1079] ret_from_fork+0x24/0x30 [ 955.934047][ T1079] Kernel Offset: disabled [ 955.939176][ T1079] Rebooting in 86400 seconds..