Warning: Permanently added '10.128.0.51' (ECDSA) to the list of known hosts. 2018/12/22 12:40:05 fuzzer started 2018/12/22 12:40:07 connecting to host at 10.128.0.26:40355 2018/12/22 12:40:07 checking revisions... 2018/12/22 12:40:07 testing simple program... [ 40.484663] ld (6092) used greatest stack depth: 15512 bytes left [ 40.658115] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program [ 60.181808] WARNING: CPU: 0 PID: 21 at include/linux/blk-cgroup.h:518 __bio_associate_blkg.isra.36+0x80b/0x8f0 [ 60.192097] Kernel panic - not syncing: panic_on_warn set ... [ 60.197990] CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 4.20.0-rc7-next-20181221 #185 [ 60.206124] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.215487] Workqueue: writeback wb_workfn (flush-8:0) [ 60.220763] Call Trace: [ 60.223356] dump_stack+0x1d3/0x2c6 [ 60.226994] ? dump_stack_print_info.cold.1+0x20/0x20 [ 60.232220] panic+0x2ad/0x632 [ 60.235418] ? add_taint.cold.5+0x16/0x16 [ 60.239585] ? __warn.cold.8+0x5/0x4f [ 60.243387] ? __warn+0xe8/0x1d0 [ 60.246761] ? __bio_associate_blkg.isra.36+0x80b/0x8f0 [ 60.252253] __warn.cold.8+0x20/0x4f [ 60.255974] ? rcu_softirq_qs+0x20/0x20 [ 60.259951] ? __bio_associate_blkg.isra.36+0x80b/0x8f0 [ 60.265358] report_bug+0x254/0x2d0 [ 60.269028] do_error_trap+0x11b/0x200 [ 60.272923] do_invalid_op+0x36/0x40 [ 60.276644] ? __bio_associate_blkg.isra.36+0x80b/0x8f0 [ 60.282008] invalid_op+0x14/0x20 [ 60.285464] RIP: 0010:__bio_associate_blkg.isra.36+0x80b/0x8f0 [ 60.291435] Code: 7b 50 48 89 f8 48 c1 e8 03 42 80 3c 20 00 0f 85 f1 00 00 00 48 8b 43 50 4c 89 ef e8 bf c6 88 04 e9 a4 f9 ff ff e8 c5 ad 07 fe <0f> 0b e9 5c fa ff ff e8 b9 ad 07 fe e8 ab e2 88 fd e9 fe f9 ff ff [ 60.310338] RSP: 0018:ffff8881d942d738 EFLAGS: 00010293 [ 60.315703] RAX: ffff8881d941e580 RBX: 0000000000000000 RCX: ffffffff83779576 [ 60.322972] RDX: 0000000000000000 RSI: ffffffff83779b1b RDI: 0000000000000005 [ 60.330276] RBP: ffff8881d942d8b8 R08: ffff8881d941e580 R09: ffffed103b5c5b77 [ 60.337553] R10: ffffed103b5c5b77 R11: ffff8881dae2dbbb R12: ffff8881ceeac200 [ 60.344834] R13: ffff8881c0600a40 R14: ffff8881c1a0ed98 R15: ffff8881ceeac200 [ 60.352165] ? __bio_associate_blkg.isra.36+0x266/0x8f0 [ 60.357599] ? __bio_associate_blkg.isra.36+0x80b/0x8f0 [ 60.363017] ? __bio_associate_blkg.isra.36+0x80b/0x8f0 [ 60.368388] ? kasan_check_write+0x14/0x20 [ 60.372627] ? bio_init+0x139/0x260 [ 60.376257] ? bio_reset+0x510/0x510 [ 60.379982] ? mark_held_locks+0x130/0x130 [ 60.384256] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.389818] ? bio_alloc_bioset+0x2cc/0x6f0 [ 60.394141] ? mark_held_locks+0x130/0x130 [ 60.398387] ? bvec_alloc+0x2d0/0x2d0 [ 60.402193] __bio_clone_fast+0x412/0x5e0 [ 60.406360] bio_clone_fast+0x42/0x110 [ 60.410253] bio_split+0x86/0x260 [ 60.413713] blk_queue_split+0xa1e/0x2080 [ 60.417870] ? blk_queue_bounce+0x126/0x29b6 [ 60.422300] ? __blk_recalc_rq_segments+0xe20/0xe20 [ 60.427324] ? find_held_lock+0x36/0x1c0 [ 60.431395] ? graph_lock+0x270/0x270 [ 60.435235] ? ktime_get+0x332/0x400 [ 60.438961] ? find_held_lock+0x36/0x1c0 [ 60.443047] blk_mq_make_request+0x2e7/0x1e30 [ 60.447554] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.453103] ? check_preemption_disabled+0x48/0x280 [ 60.458126] ? blk_mq_try_issue_directly+0xaf0/0xaf0 [ 60.463243] ? __lock_is_held+0xb5/0x140 [ 60.467322] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 60.472883] ? trace_event_raw_event_block_rq_requeue+0x6f0/0x6f0 [ 60.479131] ? __set_page_dirty_buffers+0x810/0x810 [ 60.484161] ? ___might_sleep+0x1ed/0x300 [ 60.488339] ? ext4_mark_iloc_dirty+0x17a9/0x2f30 [ 60.493191] ? arch_local_save_flags+0x40/0x40 [ 60.497783] ? lock_downgrade+0x900/0x900 [ 60.501949] ? kasan_check_write+0x14/0x20 [ 60.506194] ? __brelse+0x104/0x180 [ 60.509835] ? block_commit_write+0x30/0x30 [ 60.514162] ? __ext4_handle_dirty_metadata+0x1e0/0x5a0 [ 60.519564] ? kasan_check_write+0x14/0x20 [ 60.523813] ? ext4_mark_iloc_dirty+0x199a/0x2f30 [ 60.528685] generic_make_request+0x9a5/0x1890 [ 60.533277] ? ___might_sleep+0x1ed/0x300 [ 60.537453] ? blk_queue_enter+0x11f0/0x11f0 [ 60.541868] ? other_inode_match+0xbb0/0xbb0 [ 60.546326] ? __might_sleep+0x95/0x190 [ 60.550328] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 60.555870] ? __ext4_journal_get_write_access+0x6d/0xa0 [ 60.561337] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.566879] ? ext4_reserve_inode_write+0x148/0x260 [ 60.571917] ? ext4_mark_inode_dirty+0x266/0xb20 [ 60.576732] ? ext4_expand_extra_isize+0x5b0/0x5b0 [ 60.581678] ? lock_release+0xa00/0xa00 [ 60.585673] submit_bio+0xba/0x460 [ 60.589224] ? submit_bio+0xba/0x460 [ 60.592949] ? generic_make_request+0x1890/0x1890 [ 60.597802] ? up_write+0x7b/0x220 [ 60.601350] ? down_write_nested+0x130/0x130 [ 60.605760] ? down_read+0x120/0x120 [ 60.609490] ext4_io_submit+0x197/0x230 [ 60.613478] ext4_writepages+0x1c4b/0x4190 [ 60.617757] ? ext4_mark_inode_dirty+0xb20/0xb20 [ 60.622517] ? graph_lock+0x240/0x270 [ 60.626319] ? print_usage_bug+0xc0/0xc0 [ 60.630424] ? __lock_acquire+0x62f/0x4c20 [ 60.634666] ? hctx_unlock+0xde/0x150 [ 60.638473] ? print_usage_bug+0xc0/0xc0 [ 60.642540] ? __lock_acquire+0x62f/0x4c20 [ 60.646787] ? mark_held_locks+0x130/0x130 [ 60.651027] ? __ext4_get_inode_loc+0x470/0x1330 [ 60.655799] ? mark_held_locks+0x130/0x130 [ 60.660042] ? graph_lock+0x270/0x270 [ 60.663852] ? kasan_check_write+0x14/0x20 [ 60.668101] ? __brelse+0x104/0x180 [ 60.671752] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.677336] ? check_preemption_disabled+0x48/0x280 [ 60.682396] ? ext4_mark_inode_dirty+0xb20/0xb20 [ 60.687163] do_writepages+0x9a/0x1a0 [ 60.690967] ? ext4_mark_inode_dirty+0xb20/0xb20 [ 60.695718] ? do_writepages+0x9a/0x1a0 [ 60.699726] __writeback_single_inode+0x20a/0x1660 [ 60.704670] ? __mark_inode_dirty+0x1510/0x1510 [ 60.709345] ? find_held_lock+0x36/0x1c0 [ 60.713417] ? find_held_lock+0x36/0x1c0 [ 60.717493] ? wbc_attach_and_unlock_inode+0x5c0/0xa30 [ 60.722773] ? lock_downgrade+0x900/0x900 [ 60.726929] ? find_held_lock+0x13f/0x1c0 [ 60.731081] ? kasan_check_read+0x11/0x20 [ 60.735238] ? do_raw_spin_unlock+0xa7/0x330 [ 60.739649] ? do_raw_spin_trylock+0x270/0x270 [ 60.744239] ? __lock_is_held+0xb5/0x140 [ 60.748322] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 60.753861] ? wbc_attach_and_unlock_inode+0x675/0xa30 [ 60.759150] ? __writeback_single_inode+0x1660/0x1660 [ 60.764388] writeback_sb_inodes+0x71f/0x1210 [ 60.768915] ? wbc_detach_inode+0x960/0x960 [ 60.773259] ? lock_release+0xa00/0xa00 [ 60.777295] ? down_read_trylock+0xda/0x140 [ 60.781638] ? trylock_super+0x22/0x110 [ 60.785617] ? downgrade_write+0x270/0x270 [ 60.789854] ? queue_io+0x3dd/0x800 [ 60.793495] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 60.799043] __writeback_inodes_wb+0x1b9/0x340 [ 60.803641] ? writeback_sb_inodes+0x1210/0x1210 [ 60.808402] ? __lock_is_held+0xb5/0x140 [ 60.812494] wb_writeback+0xa73/0xfc0 [ 60.816312] ? writeback_inodes_wb.constprop.50+0x330/0x330 [ 60.822043] ? widen_string+0xe0/0x2e0 [ 60.825945] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 60.831139] ? print_usage_bug+0xc0/0xc0 [ 60.835215] ? string+0x225/0x2d0 [ 60.838706] ? widen_string+0x2e0/0x2e0 [ 60.842707] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 60.847728] ? find_next_bit+0x104/0x130 [ 60.851803] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 60.856821] ? find_next_bit+0x104/0x130 [ 60.860893] ? cpumask_next+0x41/0x50 [ 60.864702] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 60.869744] ? get_nr_dirty_inodes+0xd6/0x130 [ 60.874259] ? __local_bh_enable_ip+0x160/0x260 [ 60.878939] ? get_nr_dirty_pages+0x17c/0x1f0 [ 60.883444] ? _raw_spin_unlock_bh+0x30/0x40 [ 60.887865] ? inode_sleep_on_writeback+0x240/0x240 [ 60.892894] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.898439] ? check_preemption_disabled+0x48/0x280 [ 60.903469] ? wb_workfn+0x521/0x1790 [ 60.907275] ? wb_workfn+0x521/0x1790 [ 60.911087] ? __local_bh_enable_ip+0x160/0x260 [ 60.915767] wb_workfn+0x1008/0x1790 [ 60.919493] ? __lock_acquire+0x62f/0x4c20 [ 60.923760] ? inode_wait_for_writeback+0x40/0x40 [ 60.928647] ? mark_held_locks+0x130/0x130 [ 60.932908] ? graph_lock+0x270/0x270 [ 60.936733] ? graph_lock+0x270/0x270 [ 60.940558] ? lock_is_held_type+0x210/0x210 [ 60.945018] ? debug_object_deactivate+0x37d/0x480 [ 60.949959] ? lock_downgrade+0x900/0x900 [ 60.954112] ? find_held_lock+0x36/0x1c0 [ 60.958183] ? graph_lock+0x270/0x270 [ 60.962036] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.967625] ? check_preemption_disabled+0x48/0x280 [ 60.972659] ? __lock_is_held+0xb5/0x140 [ 60.976740] process_one_work+0xc90/0x1c40 [ 60.981007] ? mark_held_locks+0x130/0x130 [ 60.985335] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 60.990028] ? __bpf_trace_sched_wake_idle_without_ipi+0x10/0x10 [ 60.996176] ? __switch_to_asm+0x34/0x70 [ 61.000247] ? __switch_to_asm+0x34/0x70 [ 61.004306] ? __switch_to_asm+0x40/0x70 [ 61.008369] ? __switch_to_asm+0x34/0x70 [ 61.012427] ? __switch_to_asm+0x40/0x70 [ 61.016486] ? __switch_to_asm+0x34/0x70 [ 61.020588] ? __switch_to_asm+0x34/0x70 [ 61.024648] ? __switch_to_asm+0x34/0x70 [ 61.028712] ? __switch_to_asm+0x40/0x70 [ 61.032787] ? __switch_to_asm+0x34/0x70 [ 61.036847] ? __switch_to_asm+0x40/0x70 [ 61.040906] ? __switch_to_asm+0x34/0x70 [ 61.044994] ? __sched_text_start+0x8/0x8 [ 61.049146] ? graph_lock+0x270/0x270 [ 61.052951] ? lock_downgrade+0x900/0x900 [ 61.057111] ? kasan_check_read+0x11/0x20 [ 61.061282] ? do_raw_spin_unlock+0xa7/0x330 [ 61.065696] ? find_held_lock+0x36/0x1c0 [ 61.069769] ? lock_acquire+0x1ed/0x520 [ 61.073764] ? worker_thread+0x3e0/0x1390 [ 61.077921] ? kasan_check_write+0x14/0x20 [ 61.082188] ? do_raw_spin_lock+0x14f/0x350 [ 61.086539] ? __schedule+0x1ed0/0x1ed0 [ 61.090547] ? rwlock_bug.part.2+0x90/0x90 [ 61.094773] ? trace_hardirqs_on+0x310/0x310 [ 61.099197] worker_thread+0x17f/0x1390 [ 61.103193] ? __bpf_trace_sched_wake_idle_without_ipi+0x10/0x10 [ 61.109337] ? process_one_work+0x1c40/0x1c40 [ 61.113828] ? __schedule+0x9e6/0x1ed0 [ 61.117733] ? __sched_text_start+0x8/0x8 [ 61.121890] ? __sched_text_start+0x8/0x8 [ 61.126089] ? __kthread_parkme+0xce/0x1a0 [ 61.130594] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 61.130613] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 61.140808] ? lockdep_hardirqs_on+0x421/0x5c0 [ 61.145377] ? trace_hardirqs_on+0xbd/0x310 [ 61.149693] ? kasan_check_read+0x11/0x20 [ 61.153821] ? __kthread_parkme+0xce/0x1a0 [ 61.158040] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 61.163475] ? __schedule+0x1ed0/0x1ed0 [ 61.167434] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 61.172522] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 61.178055] ? __kthread_parkme+0xfb/0x1a0 [ 61.182273] ? process_one_work+0x1c40/0x1c40 [ 61.186749] kthread+0x35a/0x440 [ 61.190100] ? kthread_bind+0x40/0x40 [ 61.193881] ret_from_fork+0x3a/0x50 [ 61.198497] Kernel Offset: disabled [ 61.202159] Rebooting in 86400 seconds..