Warning: Permanently added '10.128.0.151' (ECDSA) to the list of known hosts. 2018/12/22 00:37:18 fuzzer started 2018/12/22 00:37:20 connecting to host at 10.128.0.26:35423 2018/12/22 00:37:20 checking revisions... 2018/12/22 00:37:20 testing simple program... [ 40.240999] ld (6127) used greatest stack depth: 15512 bytes left [ 40.411595] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program [ 60.271910] WARNING: CPU: 0 PID: 21 at include/linux/blk-cgroup.h:518 __bio_associate_blkg.isra.36+0x80b/0x8f0 [ 60.282146] Kernel panic - not syncing: panic_on_warn set ... [ 60.288025] CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 4.20.0-rc7-next-20181221 #184 [ 60.296169] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.305508] Workqueue: writeback wb_workfn (flush-8:0) [ 60.310776] Call Trace: [ 60.313347] dump_stack+0x1d3/0x2c6 [ 60.316986] ? dump_stack_print_info.cold.1+0x20/0x20 [ 60.322167] panic+0x2ad/0x632 [ 60.325357] ? add_taint.cold.5+0x16/0x16 [ 60.329495] ? __warn.cold.8+0x5/0x4f [ 60.333276] ? __warn+0xe8/0x1d0 [ 60.336628] ? __bio_associate_blkg.isra.36+0x80b/0x8f0 [ 60.341979] __warn.cold.8+0x20/0x4f [ 60.345678] ? rcu_softirq_qs+0x20/0x20 [ 60.349638] ? __bio_associate_blkg.isra.36+0x80b/0x8f0 [ 60.354983] report_bug+0x254/0x2d0 [ 60.358596] do_error_trap+0x11b/0x200 [ 60.362469] do_invalid_op+0x36/0x40 [ 60.366162] ? __bio_associate_blkg.isra.36+0x80b/0x8f0 [ 60.371510] invalid_op+0x14/0x20 [ 60.374945] RIP: 0010:__bio_associate_blkg.isra.36+0x80b/0x8f0 [ 60.380899] 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 [ 60.399785] RSP: 0018:ffff8881d942d738 EFLAGS: 00010293 [ 60.405131] RAX: ffff8881d941e580 RBX: 0000000000000000 RCX: ffffffff83779576 [ 60.412381] RDX: 0000000000000000 RSI: ffffffff83779b1b RDI: 0000000000000005 [ 60.419631] RBP: ffff8881d942d8b8 R08: ffff8881d941e580 R09: ffffed103b5c5b77 [ 60.426881] R10: ffffed103b5c5b77 R11: ffff8881dae2dbbb R12: ffff8881ceede240 [ 60.434134] R13: ffff8881c01e4a40 R14: ffff8881d3531ad8 R15: ffff8881ceede240 [ 60.441408] ? __bio_associate_blkg.isra.36+0x266/0x8f0 [ 60.446769] ? __bio_associate_blkg.isra.36+0x80b/0x8f0 [ 60.452119] ? __bio_associate_blkg.isra.36+0x80b/0x8f0 [ 60.457481] ? kasan_check_write+0x14/0x20 [ 60.461696] ? bio_init+0x139/0x260 [ 60.465305] ? bio_reset+0x510/0x510 [ 60.469020] ? mark_held_locks+0x130/0x130 [ 60.473273] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.478794] ? bio_alloc_bioset+0x2cc/0x6f0 [ 60.483099] ? mark_held_locks+0x130/0x130 [ 60.487318] ? bvec_alloc+0x2d0/0x2d0 [ 60.491104] __bio_clone_fast+0x412/0x5e0 [ 60.495234] bio_clone_fast+0x42/0x110 [ 60.499122] bio_split+0x86/0x260 [ 60.502562] blk_queue_split+0xa1e/0x2080 [ 60.506696] ? blk_queue_bounce+0x126/0x29b6 [ 60.511100] ? __blk_recalc_rq_segments+0xe20/0xe20 [ 60.516098] ? find_held_lock+0x36/0x1c0 [ 60.520187] ? graph_lock+0x270/0x270 [ 60.523981] ? ktime_get+0x332/0x400 [ 60.527680] ? find_held_lock+0x36/0x1c0 [ 60.531744] blk_mq_make_request+0x2e7/0x1e30 [ 60.536251] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.541802] ? check_preemption_disabled+0x48/0x280 [ 60.546829] ? blk_mq_try_issue_directly+0xaf0/0xaf0 [ 60.551942] ? __lock_is_held+0xb5/0x140 [ 60.556026] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 60.561591] ? trace_event_raw_event_block_rq_requeue+0x6f0/0x6f0 [ 60.567831] ? __set_page_dirty_buffers+0x810/0x810 [ 60.572859] ? ___might_sleep+0x1ed/0x300 [ 60.577011] ? ext4_mark_iloc_dirty+0x17a9/0x2f30 [ 60.581860] ? arch_local_save_flags+0x40/0x40 [ 60.586441] ? lock_downgrade+0x900/0x900 [ 60.590606] ? kasan_check_write+0x14/0x20 [ 60.594847] ? __brelse+0x104/0x180 [ 60.598478] ? block_commit_write+0x30/0x30 [ 60.602811] ? __ext4_handle_dirty_metadata+0x1e0/0x5a0 [ 60.608185] ? kasan_check_write+0x14/0x20 [ 60.612424] ? ext4_mark_iloc_dirty+0x199a/0x2f30 [ 60.617290] generic_make_request+0x9a5/0x1890 [ 60.621882] ? ___might_sleep+0x1ed/0x300 [ 60.626038] ? blk_queue_enter+0x11f0/0x11f0 [ 60.630464] ? other_inode_match+0xbb0/0xbb0 [ 60.634884] ? __might_sleep+0x95/0x190 [ 60.638874] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 60.644417] ? __ext4_journal_get_write_access+0x6d/0xa0 [ 60.649875] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.655417] ? ext4_reserve_inode_write+0x148/0x260 [ 60.660443] ? ext4_mark_inode_dirty+0x266/0xb20 [ 60.665212] ? ext4_expand_extra_isize+0x5b0/0x5b0 [ 60.670145] ? lock_release+0xa00/0xa00 [ 60.674131] submit_bio+0xba/0x460 [ 60.677673] ? submit_bio+0xba/0x460 [ 60.681399] ? generic_make_request+0x1890/0x1890 [ 60.686251] ? up_write+0x7b/0x220 [ 60.689801] ? down_write_nested+0x130/0x130 [ 60.694215] ? down_read+0x120/0x120 [ 60.697938] ext4_io_submit+0x197/0x230 [ 60.701922] ext4_writepages+0x1c4b/0x4190 [ 60.706193] ? ext4_mark_inode_dirty+0xb20/0xb20 [ 60.710951] ? graph_lock+0x240/0x270 [ 60.714752] ? print_usage_bug+0xc0/0xc0 [ 60.718847] ? __lock_acquire+0x62f/0x4c20 [ 60.723097] ? hctx_unlock+0xde/0x150 [ 60.726901] ? print_usage_bug+0xc0/0xc0 [ 60.730972] ? __lock_acquire+0x62f/0x4c20 [ 60.735213] ? mark_held_locks+0x130/0x130 [ 60.739451] ? __ext4_get_inode_loc+0x470/0x1330 [ 60.744222] ? mark_held_locks+0x130/0x130 [ 60.748460] ? graph_lock+0x270/0x270 [ 60.752265] ? kasan_check_write+0x14/0x20 [ 60.756505] ? __brelse+0x104/0x180 [ 60.760145] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.765694] ? check_preemption_disabled+0x48/0x280 [ 60.770723] ? ext4_mark_inode_dirty+0xb20/0xb20 [ 60.775487] do_writepages+0x9a/0x1a0 [ 60.779294] ? ext4_mark_inode_dirty+0xb20/0xb20 [ 60.784053] ? do_writepages+0x9a/0x1a0 [ 60.788075] __writeback_single_inode+0x20a/0x1660 [ 60.793020] ? __mark_inode_dirty+0x1510/0x1510 [ 60.797694] ? find_held_lock+0x36/0x1c0 [ 60.801770] ? find_held_lock+0x36/0x1c0 [ 60.805845] ? wbc_attach_and_unlock_inode+0x5c0/0xa30 [ 60.811129] ? lock_downgrade+0x900/0x900 [ 60.815283] ? find_held_lock+0x13f/0x1c0 [ 60.819442] ? kasan_check_read+0x11/0x20 [ 60.823596] ? do_raw_spin_unlock+0xa7/0x330 [ 60.828009] ? do_raw_spin_trylock+0x270/0x270 [ 60.832596] ? __lock_is_held+0xb5/0x140 [ 60.836677] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 60.842227] ? wbc_attach_and_unlock_inode+0x675/0xa30 [ 60.847515] ? __writeback_single_inode+0x1660/0x1660 [ 60.852727] writeback_sb_inodes+0x71f/0x1210 [ 60.857246] ? wbc_detach_inode+0x960/0x960 [ 60.861572] ? lock_release+0xa00/0xa00 [ 60.865569] ? down_read_trylock+0xda/0x140 [ 60.869900] ? trylock_super+0x22/0x110 [ 60.873883] ? downgrade_write+0x270/0x270 [ 60.878126] ? queue_io+0x3dd/0x800 [ 60.881775] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 60.887321] __writeback_inodes_wb+0x1b9/0x340 [ 60.891940] ? writeback_sb_inodes+0x1210/0x1210 [ 60.896698] ? __lock_is_held+0xb5/0x140 [ 60.900782] wb_writeback+0xa73/0xfc0 [ 60.904600] ? writeback_inodes_wb.constprop.50+0x330/0x330 [ 60.910320] ? widen_string+0xe0/0x2e0 [ 60.914223] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 60.919421] ? print_usage_bug+0xc0/0xc0 [ 60.923485] ? string+0x225/0x2d0 [ 60.926945] ? widen_string+0x2e0/0x2e0 [ 60.930931] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 60.935975] ? find_next_bit+0x104/0x130 [ 60.940077] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 60.945106] ? find_next_bit+0x104/0x130 [ 60.949182] ? cpumask_next+0x41/0x50 [ 60.952989] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 60.958010] ? get_nr_dirty_inodes+0xd6/0x130 [ 60.962513] ? __local_bh_enable_ip+0x160/0x260 [ 60.967193] ? get_nr_dirty_pages+0x17c/0x1f0 [ 60.971695] ? _raw_spin_unlock_bh+0x30/0x40 [ 60.976109] ? inode_sleep_on_writeback+0x240/0x240 [ 60.981137] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.986698] ? check_preemption_disabled+0x48/0x280 [ 60.991740] ? wb_workfn+0x521/0x1790 [ 60.995545] ? wb_workfn+0x521/0x1790 [ 60.999355] ? __local_bh_enable_ip+0x160/0x260 [ 61.004038] wb_workfn+0x1008/0x1790 [ 61.007777] ? __lock_acquire+0x62f/0x4c20 [ 61.012031] ? inode_wait_for_writeback+0x40/0x40 [ 61.016898] ? mark_held_locks+0x130/0x130 [ 61.021135] ? __lock_is_held+0xb5/0x140 [ 61.025340] ? update_load_avg+0x2470/0x2470 [ 61.029746] ? graph_lock+0x270/0x270 [ 61.033550] ? lock_is_held_type+0x210/0x210 [ 61.037987] ? graph_lock+0x270/0x270 [ 61.041804] ? debug_object_deactivate+0x37d/0x480 [ 61.046738] ? lock_downgrade+0x900/0x900 [ 61.050906] ? run_rebalance_domains+0x500/0x500 [ 61.055665] ? find_held_lock+0x36/0x1c0 [ 61.059749] ? graph_lock+0x270/0x270 [ 61.063578] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.069120] ? check_preemption_disabled+0x48/0x280 [ 61.074197] ? __lock_is_held+0xb5/0x140 [ 61.078292] process_one_work+0xc90/0x1c40 [ 61.082534] ? mark_held_locks+0x130/0x130 [ 61.086789] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 61.091488] ? __bpf_trace_sched_wake_idle_without_ipi+0x10/0x10 [ 61.097649] ? __switch_to_asm+0x34/0x70 [ 61.101712] ? __switch_to_asm+0x34/0x70 [ 61.105801] ? __switch_to_asm+0x40/0x70 [ 61.109863] ? __switch_to_asm+0x34/0x70 [ 61.113924] ? __switch_to_asm+0x40/0x70 [ 61.118001] ? __switch_to_asm+0x34/0x70 [ 61.122093] ? __switch_to_asm+0x34/0x70 [ 61.126157] ? __switch_to_asm+0x34/0x70 [ 61.130223] ? __switch_to_asm+0x40/0x70 [ 61.134285] ? __switch_to_asm+0x34/0x70 [ 61.138347] ? __switch_to_asm+0x40/0x70 [ 61.142409] ? __switch_to_asm+0x34/0x70 [ 61.146509] ? __sched_text_start+0x8/0x8 [ 61.150691] ? graph_lock+0x270/0x270 [ 61.154528] ? lock_downgrade+0x900/0x900 [ 61.158695] ? kasan_check_read+0x11/0x20 [ 61.162871] ? do_raw_spin_unlock+0xa7/0x330 [ 61.167290] ? find_held_lock+0x36/0x1c0 [ 61.171381] ? lock_acquire+0x1ed/0x520 [ 61.175393] ? worker_thread+0x3e0/0x1390 [ 61.179552] ? kasan_check_write+0x14/0x20 [ 61.183791] ? do_raw_spin_lock+0x14f/0x350 [ 61.188121] ? __schedule+0x1ed0/0x1ed0 [ 61.192104] ? rwlock_bug.part.2+0x90/0x90 [ 61.196344] ? trace_hardirqs_on+0x310/0x310 [ 61.200770] worker_thread+0x17f/0x1390 [ 61.204758] ? __bpf_trace_sched_wake_idle_without_ipi+0x10/0x10 [ 61.210917] ? process_one_work+0x1c40/0x1c40 [ 61.215418] ? __schedule+0x9e6/0x1ed0 [ 61.219321] ? __sched_text_start+0x8/0x8 [ 61.223471] ? __sched_text_start+0x8/0x8 [ 61.227644] ? __kthread_parkme+0xce/0x1a0 [ 61.231887] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 61.237004] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 61.242134] ? lockdep_hardirqs_on+0x421/0x5c0 [ 61.246725] ? trace_hardirqs_on+0xbd/0x310 [ 61.251048] ? kasan_check_read+0x11/0x20 [ 61.255216] ? __kthread_parkme+0xce/0x1a0 [ 61.259469] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 61.264939] ? __schedule+0x1ed0/0x1ed0 [ 61.268933] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 61.274088] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 61.279630] ? __kthread_parkme+0xfb/0x1a0 [ 61.283873] ? process_one_work+0x1c40/0x1c40 [ 61.288372] kthread+0x35a/0x440 [ 61.291741] ? kthread_bind+0x40/0x40 [ 61.295544] ret_from_fork+0x3a/0x50 [ 61.300397] Kernel Offset: disabled [ 61.304087] Rebooting in 86400 seconds..