[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 41.124926] audit: type=1800 audit(1545984360.881:25): pid=7908 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 41.161058] audit: type=1800 audit(1545984360.881:26): pid=7908 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 41.182321] audit: type=1800 audit(1545984360.881:27): pid=7908 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 '10.128.0.110' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 104.542270] Kernel panic - not syncing: corrupted stack end detected inside scheduler [ 104.550584] CPU: 1 PID: 7 Comm: kworker/u4:0 Not tainted 4.20.0-rc7-next-20181224 #189 [ 104.558641] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 104.568012] Workqueue: writeback wb_workfn (flush-8:0) [ 104.573308] Call Trace: [ 104.575908] dump_stack+0x1d3/0x2c6 [ 104.579548] ? dump_stack_print_info.cold.1+0x20/0x20 [ 104.584762] panic+0x2ad/0x632 [ 104.587967] ? add_taint.cold.5+0x16/0x16 [ 104.592156] ? mark_held_locks+0xc7/0x130 [ 104.596312] ? graph_lock+0x270/0x270 [ 104.600134] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.605696] ? check_preemption_disabled+0x48/0x280 [ 104.610721] ? check_preemption_disabled+0x3a/0x280 [ 104.615752] __schedule+0x1ecf/0x1ed0 [ 104.619583] ? __lock_acquire+0x62f/0x4c20 [ 104.623826] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 104.628590] ? trace_hardirqs_off+0x310/0x310 [ 104.633088] ? graph_lock+0x270/0x270 [ 104.636901] ? __sched_text_start+0x8/0x8 [ 104.641065] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 104.645837] ? retint_kernel+0x2d/0x2d [ 104.649744] ? list_lru_count_one+0xef/0x450 [ 104.654165] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.659709] ? check_preemption_disabled+0x48/0x280 [ 104.664732] ? check_preemption_disabled+0x6/0x280 [ 104.669680] ? ___preempt_schedule_notrace+0x16/0x31 [ 104.674797] preempt_schedule_notrace+0x70/0x140 [ 104.679553] ___preempt_schedule_notrace+0x16/0x31 [ 104.684506] rcu_is_watching+0x23/0x30 [ 104.688403] list_lru_count_one+0x3a8/0x450 [ 104.692735] ? list_lru_add+0x980/0x980 [ 104.696692] ? shmem_free_inode+0xd0/0xd0 [ 104.700926] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 104.706466] ? ubifs_shrink_count+0xc4/0x100 [ 104.710885] super_cache_count+0x153/0x2e0 [ 104.715154] do_shrink_slab+0x1b1/0xd30 [ 104.719142] ? lock_acquire+0x1ed/0x520 [ 104.723133] ? snapshot_refaults+0x290/0x290 [ 104.727556] ? lock_release+0xa00/0xa00 [ 104.731534] ? rcu_read_unlock_special+0x370/0x370 [ 104.736461] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 104.742003] ? down_read_trylock+0xda/0x140 [ 104.746321] ? shrink_slab+0x207/0x8c0 [ 104.750228] ? downgrade_write+0x270/0x270 [ 104.754480] shrink_slab+0x389/0x8c0 [ 104.758197] ? unregister_memcg_shrinker.isra.42+0x50/0x50 [ 104.763810] ? kasan_check_read+0x11/0x20 [ 104.767973] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 104.773522] shrink_node+0x647/0x17f0 [ 104.777360] ? shrink_node_memcg+0x19a0/0x19a0 [ 104.781947] ? __delayacct_freepages_start+0x41/0x80 [ 104.787094] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 104.792561] ? kvm_clock_read+0x18/0x30 [ 104.796541] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 104.801563] ? ktime_get+0x2c1/0x400 [ 104.805300] ? ktime_get_raw_ts64+0x4d0/0x4d0 [ 104.809827] ? find_held_lock+0x36/0x1c0 [ 104.813915] do_try_to_free_pages+0x3df/0x12a0 [ 104.818501] ? graph_lock+0x270/0x270 [ 104.822325] ? shrink_node+0x17f0/0x17f0 [ 104.826399] ? __lock_is_held+0xb5/0x140 [ 104.830488] try_to_free_pages+0x4d0/0xb90 [ 104.834750] ? do_try_to_free_pages+0x12a0/0x12a0 [ 104.839636] ? kasan_check_read+0x11/0x20 [ 104.843798] ? psi_memstall_enter+0x24f/0x2c0 [ 104.848303] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 104.853756] ? lock_repin_lock+0x430/0x430 [ 104.858014] ? _raw_spin_unlock_irq+0x60/0x80 [ 104.862522] ? psi_memstall_enter+0x24f/0x2c0 [ 104.867040] ? psi_memstall_tick+0x230/0x230 [ 104.871454] ? __lock_acquire+0x62f/0x4c20 [ 104.875705] __alloc_pages_slowpath+0xa5a/0x2d90 [ 104.880484] ? __lock_is_held+0xb5/0x140 [ 104.884561] ? warn_alloc+0x120/0x120 [ 104.888366] ? graph_lock+0x270/0x270 [ 104.892179] ? __account_cfs_rq_runtime+0x790/0x790 [ 104.897218] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 104.902782] ? graph_lock+0x270/0x270 [ 104.906609] ? graph_lock+0x270/0x270 [ 104.910417] ? check_preemption_disabled+0x48/0x280 [ 104.915443] ? graph_lock+0x270/0x270 [ 104.919260] ? check_preemption_disabled+0x48/0x280 [ 104.924301] ? __lock_is_held+0xb5/0x140 [ 104.928377] ? find_held_lock+0x36/0x1c0 [ 104.932448] ? graph_lock+0x270/0x270 [ 104.936266] ? find_get_entry+0xa87/0x1120 [ 104.940507] ? lock_downgrade+0x900/0x900 [ 104.945143] ? check_preemption_disabled+0x48/0x280 [ 104.950174] ? __lock_is_held+0xb5/0x140 [ 104.954268] ? ___might_sleep+0x1ed/0x300 [ 104.958423] ? arch_local_save_flags+0x40/0x40 [ 104.963012] ? trace_hardirqs_on+0x310/0x310 [ 104.967455] ? kthread_data+0x58/0xc0 [ 104.971278] ? __might_sleep+0x95/0x190 [ 104.975274] __alloc_pages_nodemask+0xa89/0xde0 [ 104.979954] ? __alloc_pages_slowpath+0x2d90/0x2d90 [ 104.984990] ? migrate_swap_stop+0x930/0x930 [ 104.989411] ? __zone_watermark_ok+0x330/0x7b0 [ 104.993999] ? print_usage_bug+0xc0/0xc0 [ 104.998081] ? print_usage_bug+0xc0/0xc0 [ 105.002160] ? graph_lock+0x270/0x270 [ 105.005964] ? free_unref_page_list+0x11e0/0x11e0 [ 105.010810] ? update_load_avg+0x387/0x2470 [ 105.015147] ? print_usage_bug+0xc0/0xc0 [ 105.019211] ? graph_lock+0x270/0x270 [ 105.023024] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 105.028590] alloc_pages_current+0x10c/0x210 [ 105.033010] __page_cache_alloc+0x38c/0x5b0 [ 105.037355] ? filemap_range_has_page+0x4e0/0x4e0 [ 105.042205] ? update_load_avg+0x387/0x2470 [ 105.046544] pagecache_get_page+0x396/0xf30 [ 105.050895] ? find_get_pages_contig+0x18d0/0x18d0 [ 105.055844] ? update_load_avg+0x387/0x2470 [ 105.060176] ? do_raw_spin_trylock+0x270/0x270 [ 105.064781] ? attach_entity_load_avg+0x860/0x860 [ 105.069634] ? graph_lock+0x270/0x270 [ 105.073439] ? graph_lock+0x270/0x270 [ 105.077243] ? graph_lock+0x270/0x270 [ 105.081074] ? __lock_is_held+0xb5/0x140 [ 105.085152] ? ___might_sleep+0x1ed/0x300 [ 105.089309] ? arch_local_save_flags+0x40/0x40 [ 105.093896] ? print_usage_bug+0xc0/0xc0 [ 105.097983] ? print_usage_bug+0xc0/0xc0 [ 105.102070] ? __might_sleep+0x95/0x190 [ 105.106063] ext4_mb_load_buddy_gfp+0xddf/0x1e70 [ 105.110847] ? ext4_mb_good_group+0x730/0x730 [ 105.115353] ? mark_held_locks+0x130/0x130 [ 105.119604] ? mark_held_locks+0x130/0x130 [ 105.123848] ? mark_held_locks+0x130/0x130 [ 105.128110] ? graph_lock+0x270/0x270 [ 105.131913] ? print_usage_bug+0xc0/0xc0 [ 105.135993] ? __read_once_size_nocheck.constprop.8+0x10/0x10 [ 105.141876] ? ret_from_fork+0x3a/0x50 [ 105.145761] ? mark_held_locks+0x130/0x130 [ 105.150011] ? print_usage_bug+0xc0/0xc0 [ 105.151679] oom_reaper: reaped process 8071 (syz-executor702), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB [ 105.154124] ? graph_lock+0x270/0x270 [ 105.154161] ? mark_held_locks+0xc7/0x130 [ 105.154184] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 105.154201] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 105.182354] ? graph_lock+0x270/0x270 [ 105.183763] oom_reaper: reaped process 8077 (syz-executor702), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB [ 105.186160] ? find_held_lock+0x36/0x1c0 [ 105.186185] ? __lock_is_held+0xb5/0x140 [ 105.186197] ? lock_downgrade+0x900/0x900 [ 105.186223] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 105.186239] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 105.186263] ? ext4_mb_good_group+0x551/0x730 [ 105.186288] ext4_mb_regular_allocator+0x634/0x1590 [ 105.186315] ? ext4_mb_complex_scan_group+0xb10/0xb10 [ 105.233408] ? ext4_mb_free_metadata+0xc90/0xc90 [ 105.238178] ? ext4_mb_new_blocks+0x787/0x4840 [ 105.242775] ? rcu_read_lock_sched_held+0x108/0x120 [ 105.243096] oom_reaper: reaped process 8076 (syz-executor702), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB [ 105.247796] ? kmem_cache_alloc+0x33f/0x730 [ 105.247821] ext4_mb_new_blocks+0x1de3/0x4840 [ 105.247840] ? graph_lock+0x270/0x270 [ 105.247870] ? ext4_discard_preallocations+0x13c0/0x13c0 [ 105.247883] ? find_held_lock+0x36/0x1c0 [ 105.247904] ? mark_held_locks+0xc7/0x130 [ 105.247923] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 105.247939] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 105.247954] ? lockdep_hardirqs_on+0x421/0x5c0 [ 105.247970] ? trace_hardirqs_on+0xbd/0x310 [ 105.303183] ? kasan_check_read+0x11/0x20 [ 105.307356] ? depot_save_stack+0x292/0x470 [ 105.311706] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 105.317232] ? unwind_next_frame+0x3e/0x50 [ 105.321494] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 105.326604] ? depot_save_stack+0x292/0x470 [ 105.330940] ? save_stack+0xa9/0xd0 [ 105.334585] ? save_stack+0x43/0xd0 [ 105.338227] ? kasan_kmalloc+0xcb/0xd0 [ 105.342143] ? __kmalloc+0x15d/0x760 [ 105.343327] oom_reaper: reaped process 8081 (syz-executor702), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB [ 105.345862] ? ext4_find_extent+0x757/0x9b0 [ 105.345877] ? ext4_ext_map_blocks+0x2ad/0x6180 [ 105.345891] ? ext4_map_blocks+0x8ce/0x1b40 [ 105.345905] ? ext4_writepages+0x2598/0x4190 [ 105.345920] ? do_writepages+0x9a/0x1a0 [ 105.345941] ? __writeback_single_inode+0x20a/0x1660 [ 105.345956] ? writeback_sb_inodes+0x71f/0x1210 [ 105.345973] ? __writeback_inodes_wb+0x1b9/0x340 [ 105.392059] ? wb_writeback+0xa73/0xfc0 [ 105.393821] oom_reaper: reaped process 8083 (syz-executor702), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB [ 105.396039] ? wb_workfn+0xee9/0x1790 [ 105.396055] ? process_one_work+0xc90/0x1c40 [ 105.396068] ? worker_thread+0x17f/0x1390 [ 105.396082] ? kthread+0x35a/0x440 [ 105.396098] ? ret_from_fork+0x3a/0x50 [ 105.396124] ? graph_lock+0x270/0x270 [ 105.396145] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.396163] ? check_preemption_disabled+0x48/0x280 [ 105.440161] ? __lock_is_held+0xb5/0x140 [ 105.444236] ? rcu_read_lock_sched_held+0x108/0x120 [ 105.449274] ? __kmalloc+0x5ed/0x760 [ 105.452999] ? ext4_find_extent+0x757/0x9b0 [ 105.457340] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.462899] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.468456] ? ext4_inode_to_goal_block+0x2e3/0x3f0 [ 105.473487] ext4_ext_map_blocks+0x2eef/0x6180 [ 105.478123] ? ext4_ext_release+0x10/0x10 [ 105.482313] ? __pagevec_release+0x88/0x120 [ 105.486647] ? find_held_lock+0x36/0x1c0 [ 105.487515] oom_reaper: reaped process 8079 (syz-executor702), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB [ 105.490718] ? graph_lock+0x270/0x270 [ 105.490735] ? graph_lock+0x270/0x270 [ 105.490751] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.490795] ? lock_acquire+0x1ed/0x520 [ 105.517782] ? ext4_map_blocks+0x866/0x1b40 [ 105.522112] ? lock_release+0xa00/0xa00 [ 105.526071] ? arch_local_save_flags+0x40/0x40 [ 105.530637] ? ext4_es_cache_extent+0x6a0/0x6a0 [ 105.535305] ? down_write+0x8a/0x130 [ 105.539012] ? ext4_map_blocks+0x866/0x1b40 [ 105.543324] ? down_read+0x120/0x120 [ 105.547030] ext4_map_blocks+0x8ce/0x1b40 [ 105.551173] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.556695] ? check_preemption_disabled+0x48/0x280 [ 105.561713] ? ext4_issue_zeroout+0x190/0x190 [ 105.566223] ? __lock_is_held+0xb5/0x140 [ 105.570287] ext4_writepages+0x2598/0x4190 [ 105.574544] ? ext4_mark_inode_dirty+0xb20/0xb20 [ 105.579296] ? graph_lock+0x1d0/0x270 [ 105.583099] ? print_usage_bug+0xc0/0xc0 [ 105.585185] rsyslogd invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=0 [ 105.587174] ? __lock_acquire+0x62f/0x4c20 [ 105.601241] ? hctx_unlock+0xde/0x150 [ 105.605055] ? print_usage_bug+0xc0/0xc0 [ 105.609126] ? __lock_acquire+0x62f/0x4c20 [ 105.613364] ? mark_held_locks+0x130/0x130 [ 105.617601] ? __ext4_get_inode_loc+0x470/0x1330 [ 105.622368] ? mark_held_locks+0x130/0x130 [ 105.626604] ? graph_lock+0x270/0x270 [ 105.630404] ? kasan_check_write+0x14/0x20 [ 105.634648] ? __brelse+0x104/0x180 [ 105.638291] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.643848] ? check_preemption_disabled+0x48/0x280 [ 105.648883] ? ext4_mark_inode_dirty+0xb20/0xb20 [ 105.653645] do_writepages+0x9a/0x1a0 [ 105.657448] ? ext4_mark_inode_dirty+0xb20/0xb20 [ 105.662204] ? do_writepages+0x9a/0x1a0 [ 105.666190] __writeback_single_inode+0x20a/0x1660 [ 105.671133] ? __mark_inode_dirty+0x1510/0x1510 [ 105.675809] ? find_held_lock+0x36/0x1c0 [ 105.679891] ? find_held_lock+0x36/0x1c0 [ 105.683970] ? wbc_attach_and_unlock_inode+0x5c0/0xa30 [ 105.689264] ? lock_downgrade+0x900/0x900 [ 105.693419] ? find_held_lock+0x13f/0x1c0 [ 105.697581] ? kasan_check_read+0x11/0x20 [ 105.701735] ? do_raw_spin_unlock+0xa7/0x330 [ 105.706153] ? do_raw_spin_trylock+0x270/0x270 [ 105.710739] ? __lock_is_held+0xb5/0x140 [ 105.714828] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 105.720374] ? wbc_attach_and_unlock_inode+0x675/0xa30 [ 105.725692] ? __writeback_single_inode+0x1660/0x1660 [ 105.730900] writeback_sb_inodes+0x71f/0x1210 [ 105.735420] ? wbc_detach_inode+0x960/0x960 [ 105.739782] ? lock_release+0xa00/0xa00 [ 105.743786] ? down_read_trylock+0xda/0x140 [ 105.748117] ? trylock_super+0x22/0x110 [ 105.752120] ? downgrade_write+0x270/0x270 [ 105.756370] ? up_read_non_owner+0x100/0x100 [ 105.760794] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 105.766345] __writeback_inodes_wb+0x1b9/0x340 [ 105.770940] ? writeback_sb_inodes+0x1210/0x1210 [ 105.775700] ? __lock_is_held+0xb5/0x140 [ 105.779799] wb_writeback+0xa73/0xfc0 [ 105.783618] ? writeback_inodes_wb.constprop.50+0x330/0x330 [ 105.789356] ? widen_string+0xe0/0x2e0 [ 105.793265] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 105.798479] ? print_usage_bug+0xc0/0xc0 [ 105.802543] ? string+0x225/0x2d0 [ 105.806020] ? widen_string+0x2e0/0x2e0 [ 105.810161] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 105.815184] ? find_next_bit+0x104/0x130 [ 105.819278] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 105.824302] ? find_next_bit+0x104/0x130 [ 105.828369] ? cpumask_next+0x41/0x50 [ 105.832175] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 105.837212] ? get_nr_dirty_inodes+0xd6/0x130 [ 105.841751] ? __local_bh_enable_ip+0x160/0x260 [ 105.846451] ? get_nr_dirty_pages+0x17c/0x1f0 [ 105.850983] ? _raw_spin_unlock_bh+0x30/0x40 [ 105.855399] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 105.860420] ? wb_split_bdi_pages.isra.33+0x134/0x1b0 [ 105.865620] ? block_dump___mark_inode_dirty+0x120/0x120 [ 105.871076] ? wb_workfn+0x521/0x1790 [ 105.874884] ? __local_bh_enable_ip+0x160/0x260 [ 105.879584] wb_workfn+0xee9/0x1790 [ 105.883217] ? __lock_acquire+0x62f/0x4c20 [ 105.887470] ? inode_wait_for_writeback+0x40/0x40 [ 105.892328] ? mark_held_locks+0x130/0x130 [ 105.896568] ? graph_lock+0x270/0x270 [ 105.900401] ? mark_held_locks+0x130/0x130 [ 105.904640] ? lock_downgrade+0x900/0x900 [ 105.908808] ? lock_is_held_type+0x210/0x210 [ 105.913238] ? graph_lock+0x270/0x270 [ 105.917075] ? debug_object_deactivate+0x37d/0x480 [ 105.922009] ? lock_downgrade+0x900/0x900 [ 105.926165] ? find_held_lock+0x36/0x1c0 [ 105.930230] ? graph_lock+0x270/0x270 [ 105.934048] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.939595] ? check_preemption_disabled+0x48/0x280 [ 105.944622] ? __lock_is_held+0xb5/0x140 [ 105.948733] process_one_work+0xc90/0x1c40 [ 105.952973] ? mark_held_locks+0x130/0x130 [ 105.957222] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 105.961905] ? __bpf_trace_sched_wake_idle_without_ipi+0x10/0x10 [ 105.968060] ? __switch_to_asm+0x34/0x70 [ 105.972147] ? __switch_to_asm+0x34/0x70 [ 105.976212] ? __switch_to_asm+0x40/0x70 [ 105.980313] ? __switch_to_asm+0x34/0x70 [ 105.984375] ? __switch_to_asm+0x40/0x70 [ 105.988470] ? __switch_to_asm+0x34/0x70 [ 105.992565] ? __switch_to_asm+0x34/0x70 [ 105.996633] ? __switch_to_asm+0x40/0x70 [ 106.000697] ? __switch_to_asm+0x34/0x70 [ 106.004762] ? __switch_to_asm+0x40/0x70 [ 106.008838] ? __switch_to_asm+0x34/0x70 [ 106.012903] ? __switch_to_asm+0x40/0x70 [ 106.016965] ? __switch_to_asm+0x34/0x70 [ 106.021044] ? __sched_text_start+0x8/0x8 [ 106.025192] ? graph_lock+0x270/0x270 [ 106.028994] ? lock_downgrade+0x900/0x900 [ 106.033150] ? kasan_check_read+0x11/0x20 [ 106.037317] ? do_raw_spin_unlock+0xa7/0x330 [ 106.041745] ? find_held_lock+0x36/0x1c0 [ 106.045828] ? lock_acquire+0x1ed/0x520 [ 106.049835] ? worker_thread+0x3e0/0x1390 [ 106.054005] ? kasan_check_write+0x14/0x20 [ 106.058243] ? do_raw_spin_lock+0x14f/0x350 [ 106.062578] ? __schedule+0x1ed0/0x1ed0 [ 106.066559] ? rwlock_bug.part.2+0x90/0x90 [ 106.070799] ? trace_hardirqs_on+0x310/0x310 [ 106.075235] worker_thread+0x17f/0x1390 [ 106.079279] ? __bpf_trace_sched_wake_idle_without_ipi+0x10/0x10 [ 106.085444] ? process_one_work+0x1c40/0x1c40 [ 106.089951] ? __schedule+0x9e6/0x1ed0 [ 106.093851] ? __sched_text_start+0x8/0x8 [ 106.098000] ? __sched_text_start+0x8/0x8 [ 106.102171] ? __kthread_parkme+0xce/0x1a0 [ 106.106430] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 106.111539] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 106.116663] ? lockdep_hardirqs_on+0x421/0x5c0 [ 106.121260] ? trace_hardirqs_on+0xbd/0x310 [ 106.125597] ? kasan_check_read+0x11/0x20 [ 106.129754] ? __kthread_parkme+0xce/0x1a0 [ 106.133998] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 106.139458] ? __schedule+0x1ed0/0x1ed0 [ 106.143474] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 106.148582] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 106.154122] ? __kthread_parkme+0xfb/0x1a0 [ 106.158372] ? process_one_work+0x1c40/0x1c40 [ 106.162869] kthread+0x35a/0x440 [ 106.166238] ? kthread_bind+0x40/0x40 [ 106.170057] ret_from_fork+0x3a/0x50 [ 106.173828] CPU: 0 PID: 7946 Comm: rsyslogd Not tainted 4.20.0-rc7-next-20181224 #189 [ 106.181805] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 106.191153] Call Trace: [ 106.193741] dump_stack+0x1d3/0x2c6 [ 106.197375] ? dump_stack_print_info.cold.1+0x20/0x20 [ 106.202593] dump_header+0x253/0x1239 [ 106.206409] ? pagefault_out_of_memory+0x19d/0x19d [ 106.211336] ? mark_held_locks+0x130/0x130 [ 106.215579] ? __lock_acquire+0x62f/0x4c20 [ 106.219816] ? kasan_check_read+0x11/0x20 [ 106.223971] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 106.229285] ? graph_lock+0x270/0x270 [ 106.233088] ? print_usage_bug+0xc0/0xc0 [ 106.237149] ? rcu_read_unlock+0x33/0x60 [ 106.241215] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 106.246767] ? find_held_lock+0x36/0x1c0 [ 106.250838] ? mark_held_locks+0xc7/0x130 [ 106.254993] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 106.260097] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 106.265218] ? lockdep_hardirqs_on+0x421/0x5c0 [ 106.269800] ? trace_hardirqs_on+0xbd/0x310 [ 106.274122] ? kasan_check_read+0x11/0x20 [ 106.278283] ? ___ratelimit+0x36f/0x655 [ 106.282276] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 106.287729] ? trace_hardirqs_on+0x310/0x310 [ 106.292139] ? lock_downgrade+0x900/0x900 [ 106.296299] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 106.301402] ? ___ratelimit+0xaa/0x655 [ 106.305298] ? idr_get_free+0xf70/0xf70 [ 106.309294] ? find_held_lock+0x36/0x1c0 [ 106.313370] oom_kill_process.cold.27+0x10/0x8f9 [ 106.318141] ? graph_lock+0x270/0x270 [ 106.321943] ? check_preemption_disabled+0x48/0x280 [ 106.326963] ? kasan_check_read+0x11/0x20 [ 106.331111] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 106.336393] ? oom_evaluate_task+0x540/0x540 [ 106.340801] ? find_held_lock+0x36/0x1c0 [ 106.344867] ? out_of_memory+0xcc5/0x1480 [ 106.349013] ? lock_downgrade+0x900/0x900 [ 106.353190] ? check_preemption_disabled+0x48/0x280 [ 106.358208] ? kasan_check_read+0x11/0x20 [ 106.362359] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 106.367657] ? rcu_read_unlock_special+0x370/0x370 [ 106.372586] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 106.378122] ? oom_evaluate_task+0x302/0x540 [ 106.382553] out_of_memory+0x8ba/0x1480 [ 106.386556] ? oom_killer_disable+0x3a0/0x3a0 [ 106.391057] ? __alloc_pages_slowpath+0xf45/0x2d90 [ 106.395991] ? __ww_mutex_check_waiters+0x160/0x160 [ 106.401017] __alloc_pages_slowpath+0x22f7/0x2d90 [ 106.405857] ? zone_watermark_ok_safe+0x3f0/0x3f0 [ 106.410724] ? warn_alloc+0x120/0x120 [ 106.414525] ? __alloc_pages_slowpath+0x25dd/0x2d90 [ 106.419553] ? graph_lock+0x270/0x270 [ 106.423354] ? graph_lock+0x270/0x270 [ 106.427156] ? check_preemption_disabled+0x48/0x280 [ 106.432172] ? graph_lock+0x270/0x270 [ 106.435995] ? __lock_is_held+0xb5/0x140 [ 106.440092] ? graph_lock+0x270/0x270 [ 106.443916] ? find_get_entry+0xa87/0x1120 [ 106.448160] ? __lock_is_held+0xb5/0x140 [ 106.452215] ? ip_do_fragment+0xad8/0x2a90 [ 106.456502] ? ___might_sleep+0x1ed/0x300 [ 106.460647] ? lock_release+0xa00/0xa00 [ 106.464622] ? arch_local_save_flags+0x40/0x40 [ 106.469214] ? __might_sleep+0x95/0x190 [ 106.473217] __alloc_pages_nodemask+0xa89/0xde0 [ 106.477892] ? __alloc_pages_slowpath+0x2d90/0x2d90 [ 106.482913] ? __lock_is_held+0xb5/0x140 [ 106.487030] ? __lock_acquire+0x62f/0x4c20 [ 106.491281] ? __alloc_pages_slowpath+0x2d90/0x2d90 [ 106.496319] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 106.501864] alloc_pages_current+0x10c/0x210 [ 106.506288] __page_cache_alloc+0x38c/0x5b0 [ 106.510629] ? xa_load+0x2ba/0x460 [ 106.514172] ? filemap_range_has_page+0x4e0/0x4e0 [ 106.519013] ? check_preemption_disabled+0x48/0x280 [ 106.524082] pagecache_get_page+0x396/0xf30 [ 106.528423] ? find_get_pages_contig+0x18d0/0x18d0 [ 106.533369] ? __page_cache_alloc+0x191/0x5b0 [ 106.537890] ? xa_load+0x2e1/0x460 [ 106.541443] ? xa_clear_mark+0x40/0x40 [ 106.545335] ? graph_lock+0x270/0x270 [ 106.549163] ? print_usage_bug+0xc0/0xc0 [ 106.553220] ? graph_lock+0x270/0x270 [ 106.557016] ? graph_lock+0x270/0x270 [ 106.560845] ? __do_page_cache_readahead+0x663/0x810 [ 106.565951] ? find_held_lock+0x36/0x1c0 [ 106.570021] ? filemap_fault+0x1a61/0x2a70 [ 106.574268] ? lock_downgrade+0x900/0x900 [ 106.578421] ? check_preemption_disabled+0x48/0x280 [ 106.583457] ? kasan_check_read+0x11/0x20 [ 106.587607] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 106.592914] ? rcu_read_unlock_special+0x370/0x370 [ 106.597845] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 106.603382] ? check_preemption_disabled+0x48/0x280 [ 106.608405] filemap_fault+0x129c/0x2a70 [ 106.612478] ? grab_cache_page_write_begin+0xa0/0xa0 [ 106.617586] ? filemap_map_pages+0xec9/0x1d20 [ 106.622084] ? rcu_softirq_qs+0x20/0x20 [ 106.626067] ? __lock_page_killable+0x170/0x170 [ 106.630737] ? is_bpf_text_address+0xd3/0x170 [ 106.635235] ? kernel_text_address+0x79/0xf0 [ 106.639663] ? __save_stack_trace+0x8d/0xf0 [ 106.643988] ? graph_lock+0x270/0x270 [ 106.647794] ? save_stack+0xa9/0xd0 [ 106.651421] ? save_stack+0x43/0xd0 [ 106.655045] ? __kasan_slab_free+0x102/0x150 [ 106.659454] ? __lock_is_held+0xb5/0x140 [ 106.663517] ? lock_acquire+0x1ed/0x520 [ 106.667493] ? ext4_filemap_fault+0x7a/0xad [ 106.671822] ? lock_release+0xa00/0xa00 [ 106.675801] ? arch_local_save_flags+0x40/0x40 [ 106.680402] ? down_read+0x8d/0x120 [ 106.684027] ? ext4_filemap_fault+0x7a/0xad [ 106.688350] ? __down_interruptible+0x700/0x700 [ 106.693030] ext4_filemap_fault+0x82/0xad [ 106.697178] __do_fault+0x176/0x6f0 [ 106.700809] ? lock_page+0x170/0x170 [ 106.704566] ? pmd_val+0x88/0x100 [ 106.708023] ? add_mm_counter_fast+0xd0/0xd0 [ 106.712433] ? pmd_val+0x88/0x100 [ 106.715886] ? add_mm_counter_fast+0xd0/0xd0 [ 106.720325] ? log_buf_vmcoreinfo_setup+0x120/0x120 [ 106.725367] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 106.730939] __handle_mm_fault+0x392f/0x55f0 [ 106.735356] ? vmf_insert_mixed_mkwrite+0x40/0x40 [ 106.740200] ? graph_lock+0x270/0x270 [ 106.744000] ? print_usage_bug+0xc0/0xc0 [ 106.748061] ? graph_lock+0x270/0x270 [ 106.751859] ? graph_lock+0x270/0x270 [ 106.755675] ? handle_mm_fault+0x42a/0xc70 [ 106.759912] ? lock_downgrade+0x900/0x900 [ 106.764059] ? check_preemption_disabled+0x48/0x280 [ 106.769094] ? kasan_check_read+0x11/0x20 [ 106.773244] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 106.778539] ? rcu_read_unlock_special+0x370/0x370 [ 106.783467] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 106.789004] ? check_preemption_disabled+0x48/0x280 [ 106.794028] handle_mm_fault+0x54f/0xc70 [ 106.798092] ? __handle_mm_fault+0x55f0/0x55f0 [ 106.802691] ? find_vma+0x34/0x190 [ 106.806239] __do_page_fault+0x5f6/0xd70 [ 106.810327] ? kernel_write+0x120/0x120 [ 106.814315] do_page_fault+0xf2/0x7e0 [ 106.818136] ? vmalloc_sync_all+0x30/0x30 [ 106.822297] ? error_entry+0x70/0xd0 [ 106.826012] ? trace_hardirqs_off_caller+0xbb/0x310 [ 106.831053] ? trace_hardirqs_on_caller+0xc0/0x310 [ 106.835985] ? syscall_return_slowpath+0x5e0/0x5e0 [ 106.842476] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 106.847321] ? trace_hardirqs_on_caller+0x310/0x310 [ 106.852364] ? trace_hardirqs_off+0x310/0x310 [ 106.856883] ? prepare_exit_to_usermode+0x291/0x3b0 [ 106.861913] ? page_fault+0x8/0x30 [ 106.865473] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 106.870320] ? page_fault+0x8/0x30 [ 106.873864] page_fault+0x1e/0x30 [ 106.877332] RIP: 0033:0x7faacf5541fd [ 106.881065] Code: Bad RIP value. [ 106.884447] RSP: 002b:00007faaccaf3e30 EFLAGS: 00010293 [ 106.889809] RAX: 0000000000000ff8 RBX: 000000000233c170 RCX: 00007faacf5541fd [ 106.897134] RDX: 0000000000000fff RSI: 00007faace3285a0 RDI: 0000000000000004 [ 106.904405] RBP: 0000000000000000 R08: 0000000002327260 R09: 0000000000000000 [ 106.911671] R10: 74616c7567657227 R11: 0000000000000293 R12: 000000000065e420 [ 106.918937] R13: 00007faaccaf49c0 R14: 00007faacfb99040 R15: 0000000000000003 [ 106.927320] Kernel Offset: disabled [ 106.931055] Rebooting in 86400 seconds..