[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 59.707571][ T21] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:1/21 [ 59.716712][ T21] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.723099][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.7.0-syzkaller #0 [ 59.731160][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.741309][ T21] Workqueue: writeback wb_workfn (flush-8:0) [ 59.747284][ T21] Call Trace: [ 59.750555][ T21] dump_stack+0x188/0x20d [ 59.754863][ T21] debug_smp_processor_id.cold+0x88/0x9b [ 59.760799][ T21] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.765911][ T21] ? __kmalloc+0x62f/0x7a0 [ 59.770347][ T21] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.775803][ T21] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.781600][ T21] ext4_ext_map_blocks+0x2044/0x3410 [ 59.786892][ T21] ? ext4_ext_release+0x10/0x10 [ 59.791737][ T21] ? __down_timeout+0x2d0/0x2d0 [ 59.796569][ T21] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.802017][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 59.807457][ T21] ext4_map_blocks+0x4cb/0x1640 [ 59.812291][ T21] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.817477][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 59.823024][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.828557][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.834533][ T21] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.839976][ T21] ext4_writepages+0x1ab7/0x3400 [ 59.844903][ T21] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.850512][ T21] ? __lock_acquire+0x2224/0x48a0 [ 59.855533][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.861490][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.867465][ T21] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.873089][ T21] ? do_writepages+0xfa/0x2a0 [ 59.877830][ T21] do_writepages+0xfa/0x2a0 [ 59.882313][ T21] ? page_writeback_cpu_online+0x10/0x10 [ 59.887931][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 59.893368][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.898895][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.904849][ T21] ? lock_downgrade+0x840/0x840 [ 59.909679][ T21] __writeback_single_inode+0x12a/0x1410 [ 59.915287][ T21] ? _raw_spin_unlock+0x24/0x40 [ 59.920980][ T21] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 59.926937][ T21] writeback_sb_inodes+0x515/0xdd0 [ 59.932031][ T21] ? __writeback_single_inode+0x1410/0x1410 [ 59.937911][ T21] __writeback_inodes_wb+0xc3/0x250 [ 59.943088][ T21] wb_writeback+0x910/0xd90 [ 59.947580][ T21] ? print_usage_bug+0x240/0x240 [ 59.952495][ T21] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 59.958796][ T21] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 59.964671][ T21] ? cpumask_next+0x3c/0x40 [ 59.969149][ T21] ? get_nr_dirty_inodes+0xd6/0x130 [ 59.974503][ T21] wb_workfn+0xadf/0x10d0 [ 59.978818][ T21] ? inode_wait_for_writeback+0x30/0x30 [ 59.984511][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 59.990037][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.995559][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.001532][ T21] process_one_work+0x965/0x16a0 [ 60.006517][ T21] ? lock_release+0x800/0x800 [ 60.011207][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 60.016567][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 60.021501][ T21] worker_thread+0x96/0xe10 [ 60.025987][ T21] ? process_one_work+0x16a0/0x16a0 [ 60.031337][ T21] kthread+0x388/0x470 [ 60.035381][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.041085][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.046781][ T21] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.15.197' (ECDSA) to the list of known hosts. 2020/06/14 05:46:15 fuzzer started 2020/06/14 05:46:16 connecting to host at 10.128.0.26:35273 2020/06/14 05:46:16 checking machine... 2020/06/14 05:46:16 checking revisions... 2020/06/14 05:46:16 testing simple program... [ 61.026635][ T6809] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6809 [ 61.035755][ T6809] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.041715][ T6809] CPU: 0 PID: 6809 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 61.049684][ T6809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.059745][ T6809] Call Trace: [ 61.063026][ T6809] dump_stack+0x188/0x20d [ 61.067343][ T6809] debug_smp_processor_id.cold+0x88/0x9b [ 61.072961][ T6809] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.078056][ T6809] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.083500][ T6809] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.089196][ T6809] ext4_ext_map_blocks+0x2044/0x3410 [ 61.094562][ T6809] ? ext4_ext_release+0x10/0x10 [ 61.099408][ T6809] ? __down_timeout+0x2d0/0x2d0 [ 61.104240][ T6809] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.109711][ T6809] ext4_map_blocks+0x4cb/0x1640 [ 61.114548][ T6809] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.119726][ T6809] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.125248][ T6809] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.131211][ T6809] ? prandom_u32_state+0xe/0x170 [ 61.136133][ T6809] ? __brelse+0x84/0xa0 [ 61.140278][ T6809] ? __ext4_new_inode+0x144/0x57c0 [ 61.145368][ T6809] ext4_getblk+0xad/0x520 [ 61.149723][ T6809] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.155458][ T6809] ? ext4_free_inode+0x17e0/0x17e0 [ 61.160555][ T6809] ext4_bread+0x7c/0x380 [ 61.164801][ T6809] ? ext4_getblk+0x520/0x520 [ 61.169374][ T6809] ? dqget+0xff0/0xff0 [ 61.173430][ T6809] ext4_append+0x153/0x360 [ 61.177826][ T6809] ext4_mkdir+0x5e0/0xdf0 [ 61.184737][ T6809] ? ext4_rmdir+0xde0/0xde0 [ 61.189284][ T6809] ? security_inode_permission+0xc4/0xf0 [ 61.194924][ T6809] vfs_mkdir+0x419/0x690 [ 61.199155][ T6809] do_mkdirat+0x21e/0x280 [ 61.203489][ T6809] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.208323][ T6809] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.214372][ T6809] ? do_syscall_64+0x21/0x7d0 [ 61.219027][ T6809] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.225003][ T6809] do_syscall_64+0xf6/0x7d0 [ 61.229567][ T6809] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.235460][ T6809] RIP: 0033:0x4b02a0 [ 61.239342][ T6809] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 61.258937][ T6809] RSP: 002b:000000c00004f4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 61.267324][ T6809] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 61.275289][ T6809] RDX: 00000000000001c0 RSI: 000000c0004009a0 RDI: ffffffffffffff9c [ 61.283235][ T6809] RBP: 000000c00004f510 R08: 0000000000000000 R09: 0000000000000000 [ 61.291189][ T6809] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 61.299145][ T6809] R13: 000000000000004e R14: 000000000000004d R15: 0000000000000100 [ 61.315468][ T6812] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6812 [ 61.324936][ T6812] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.330960][ T6812] CPU: 0 PID: 6812 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.339287][ T6812] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.349328][ T6812] Call Trace: [ 61.352621][ T6812] dump_stack+0x188/0x20d [ 61.356940][ T6812] debug_smp_processor_id.cold+0x88/0x9b [ 61.362550][ T6812] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.367644][ T6812] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.373086][ T6812] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.378782][ T6812] ext4_ext_map_blocks+0x2044/0x3410 [ 61.384047][ T6812] ? ext4_ext_release+0x10/0x10 [ 61.388888][ T6812] ? __down_timeout+0x2d0/0x2d0 [ 61.393713][ T6812] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.399150][ T6812] ext4_map_blocks+0x4cb/0x1640 [ 61.403981][ T6812] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.409156][ T6812] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.414683][ T6812] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.420636][ T6812] ? prandom_u32_state+0xe/0x170 [ 61.425558][ T6812] ? __brelse+0x84/0xa0 [ 61.429698][ T6812] ? __ext4_new_inode+0x144/0x57c0 [ 61.434789][ T6812] ext4_getblk+0xad/0x520 [ 61.439107][ T6812] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.444801][ T6812] ? ext4_free_inode+0x17e0/0x17e0 [ 61.449897][ T6812] ext4_bread+0x7c/0x380 [ 61.454129][ T6812] ? ext4_getblk+0x520/0x520 [ 61.458706][ T6812] ? dqget+0xff0/0xff0 [ 61.462755][ T6812] ext4_append+0x153/0x360 [ 61.467148][ T6812] ext4_mkdir+0x5e0/0xdf0 [ 61.471637][ T6812] ? ext4_rmdir+0xde0/0xde0 [ 61.476125][ T6812] ? security_inode_permission+0xc4/0xf0 [ 61.481735][ T6812] vfs_mkdir+0x419/0x690 [ 61.485954][ T6812] do_mkdirat+0x21e/0x280 [ 61.490260][ T6812] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.495094][ T6812] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.501057][ T6812] ? do_syscall_64+0x21/0x7d0 [ 61.505723][ T6812] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.511683][ T6812] do_syscall_64+0xf6/0x7d0 [ 61.516336][ T6812] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.522203][ T6812] RIP: 0033:0x45bee7 [ 61.526074][ T6812] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 61.545654][ T6812] RSP: 002b:00007fff2b4a46e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 61.554043][ T6812] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 61.562002][ T6812] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007fff2b4a48c0 [ 61.569950][ T6812] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003400 [ 61.577895][ T6812] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 61.585878][ T6812] R13: 00007fff2b4a48c0 R14: 8421084210842109 R15: 00007fff2b4a48cc [ 61.619966][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 61.629241][ T1155] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.635153][ T1155] CPU: 1 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.643072][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.653128][ T1155] Call Trace: [ 61.656423][ T1155] dump_stack+0x188/0x20d [ 61.660770][ T1155] debug_smp_processor_id.cold+0x88/0x9b [ 61.666405][ T1155] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.671546][ T1155] ? __kmalloc+0x62f/0x7a0 [ 61.676008][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.681475][ T1155] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.687210][ T1155] ext4_ext_map_blocks+0x2044/0x3410 [ 61.690630][ T6813] IPVS: ftp: loaded support on port[0] = 21 [ 61.692497][ T1155] ? ext4_ext_release+0x10/0x10 [ 61.703237][ T1155] ? __down_timeout+0x2d0/0x2d0 [ 61.708090][ T1155] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.713565][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 61.718439][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.723635][ T1155] ? debug_smp_processor_id+0x2f/0x185 [ 61.729101][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.734649][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.740630][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.745921][ T6813] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6813 [ 61.746089][ T1155] ext4_writepages+0x1ab7/0x3400 [ 61.755522][ T6813] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.760356][ T1155] ? mark_lock+0x30/0xdd0 [ 61.760386][ T1155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.760428][ T1155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.781909][ T1155] ? do_writepages+0xfa/0x2a0 [ 61.786698][ T1155] do_writepages+0xfa/0x2a0 [ 61.791202][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 61.796841][ T1155] ? do_raw_spin_lock+0x129/0x2e0 [ 61.801860][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 61.807045][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 61.811895][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.817599][ T1155] ? collapse_file+0x3575/0x4300 [ 61.822519][ T1155] ? delete_from_page_cache_batch+0xec0/0xec0 [ 61.828584][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.833774][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.839769][ T1155] collapse_file+0x357f/0x4300 [ 61.844538][ T1155] ? collapse_huge_page+0x4370/0x4370 [ 61.849898][ T1155] ? khugepaged+0x24fa/0x3f80 [ 61.854587][ T1155] khugepaged+0x3049/0x3f80 [ 61.859096][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.864732][ T1155] ? lock_downgrade+0x840/0x840 [ 61.870693][ T1155] ? finish_wait+0x260/0x260 [ 61.876137][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.881935][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.887899][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 61.892905][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.898518][ T1155] kthread+0x388/0x470 [ 61.902572][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.908269][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.913967][ T1155] ret_from_fork+0x24/0x30 [ 61.918401][ T6813] CPU: 0 PID: 6813 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.926641][ T6813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.936693][ T6813] Call Trace: [ 61.939981][ T6813] dump_stack+0x188/0x20d [ 61.944314][ T6813] debug_smp_processor_id.cold+0x88/0x9b [ 61.949940][ T6813] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.955039][ T6813] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.961355][ T6813] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.967075][ T6813] ext4_ext_map_blocks+0x2044/0x3410 [ 61.972378][ T6813] ? ext4_ext_release+0x10/0x10 [ 61.977389][ T6813] ? __down_timeout+0x2d0/0x2d0 [ 61.982231][ T6813] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.987751][ T6813] ext4_map_blocks+0x4cb/0x1640 [ 61.992610][ T6813] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.992848][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 61.997814][ T6813] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.997830][ T6813] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.997843][ T6813] ? prandom_u32_state+0xe/0x170 [ 61.997865][ T6813] ? __brelse+0x84/0xa0 [ 62.007058][ T1155] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.012564][ T6813] ? __ext4_new_inode+0x144/0x57c0 [ 62.038611][ T6813] ext4_getblk+0xad/0x520 [ 62.043015][ T6813] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.048721][ T6813] ? ext4_free_inode+0x17e0/0x17e0 [ 62.053824][ T6813] ext4_bread+0x7c/0x380 [ 62.058068][ T6813] ? ext4_getblk+0x520/0x520 [ 62.062637][ T6813] ? dqget+0xff0/0xff0 [ 62.066728][ T6813] ext4_append+0x153/0x360 [ 62.071151][ T6813] ext4_mkdir+0x5e0/0xdf0 [ 62.075477][ T6813] ? ext4_rmdir+0xde0/0xde0 [ 62.079977][ T6813] ? security_inode_permission+0xc4/0xf0 [ 62.085598][ T6813] vfs_mkdir+0x419/0x690 [ 62.089844][ T6813] do_mkdirat+0x21e/0x280 [ 62.094155][ T6813] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.098987][ T6813] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.104950][ T6813] ? do_syscall_64+0x21/0x7d0 [ 62.109617][ T6813] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.115586][ T6813] do_syscall_64+0xf6/0x7d0 [ 62.120073][ T6813] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 62.125943][ T6813] RIP: 0033:0x45bee7 [ 62.129827][ T6813] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 62.149468][ T6813] RSP: 002b:00007fff2b4a45d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 62.157858][ T6813] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 62.165818][ T6813] RDX: 00007fff2b4a4623 RSI: 00000000000001ff RDI: 00007fff2b4a4620 [ 62.173767][ T6813] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 62.181717][ T6813] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 62.189665][ T6813] R13: 00007fff2b4a4610 R14: 0000000000000000 R15: 00007fff2b4a4620 [ 62.197637][ T1155] CPU: 1 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 62.205523][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.215577][ T1155] Call Trace: [ 62.218875][ T1155] dump_stack+0x188/0x20d [ 62.223212][ T1155] debug_smp_processor_id.cold+0x88/0x9b [ 62.228843][ T1155] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.233965][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.239430][ T1155] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 62.245683][ T1155] ext4_ext_map_blocks+0x2044/0x3410 [ 62.250977][ T1155] ? ext4_ext_release+0x10/0x10 [ 62.255842][ T1155] ? __down_timeout+0x2d0/0x2d0 [ 62.260693][ T1155] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.266156][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 62.271022][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.276216][ T1155] ? debug_smp_processor_id+0x2f/0x185 [ 62.281687][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.287236][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.293236][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.298706][ T1155] ext4_writepages+0x1ab7/0x3400 [ 62.303648][ T1155] ? mark_lock+0x30/0xdd0 [ 62.307995][ T1155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.313657][ T1155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.319291][ T1155] ? do_writepages+0xfa/0x2a0 [ 62.323975][ T1155] do_writepages+0xfa/0x2a0 [ 62.328482][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 62.334116][ T1155] ? do_raw_spin_lock+0x129/0x2e0 [ 62.335922][ T6813] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6813 [ 62.339234][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 62.339249][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 62.339268][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.339282][ T1155] ? collapse_file+0x3575/0x4300 [ 62.339296][ T1155] ? delete_from_page_cache_batch+0xec0/0xec0 [ 62.339317][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.339337][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.348714][ T6813] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.353855][ T1155] collapse_file+0x357f/0x4300 [ 62.397262][ T1155] ? collapse_huge_page+0x4370/0x4370 [ 62.402624][ T1155] ? khugepaged+0x24fa/0x3f80 [ 62.407307][ T1155] khugepaged+0x3049/0x3f80 [ 62.411819][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.417434][ T1155] ? lock_downgrade+0x840/0x840 [ 62.422265][ T1155] ? finish_wait+0x260/0x260 [ 62.426838][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.432624][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.438598][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 62.443605][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.449217][ T1155] kthread+0x388/0x470 [ 62.453264][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.458963][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.464763][ T1155] ret_from_fork+0x24/0x30 [ 62.469177][ T6813] CPU: 0 PID: 6813 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 62.477414][ T6813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.487481][ T6813] Call Trace: [ 62.490772][ T6813] dump_stack+0x188/0x20d [ 62.495102][ T6813] debug_smp_processor_id.cold+0x88/0x9b [ 62.500735][ T6813] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.505954][ T6813] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.511414][ T6813] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.517143][ T6813] ext4_ext_map_blocks+0x2044/0x3410 [ 62.522418][ T6813] ? ext4_ext_release+0x10/0x10 [ 62.527296][ T6813] ? __down_timeout+0x2d0/0x2d0 [ 62.532151][ T6813] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.537621][ T6813] ext4_map_blocks+0x4cb/0x1640 [ 62.541504][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 62.543085][ T6813] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.552115][ T1155] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.557245][ T6813] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.557261][ T6813] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.557275][ T6813] ? prandom_u32_state+0xe/0x170 [ 62.557291][ T6813] ? __brelse+0x84/0xa0 [ 62.557306][ T6813] ? __ext4_new_inode+0x144/0x57c0 [ 62.557324][ T6813] ext4_getblk+0xad/0x520 [ 62.557343][ T6813] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.598854][ T6813] ? ext4_free_inode+0x17e0/0x17e0 [ 62.604816][ T6813] ext4_bread+0x7c/0x380 [ 62.609041][ T6813] ? ext4_getblk+0x520/0x520 [ 62.613626][ T6813] ? dqget+0xff0/0xff0 [ 62.617767][ T6813] ext4_append+0x153/0x360 [ 62.622166][ T6813] ext4_mkdir+0x5e0/0xdf0 [ 62.626481][ T6813] ? ext4_rmdir+0xde0/0xde0 [ 62.630981][ T6813] ? security_inode_permission+0xc4/0xf0 [ 62.636597][ T6813] vfs_mkdir+0x419/0x690 [ 62.640844][ T6813] do_mkdirat+0x21e/0x280 [ 62.645249][ T6813] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.650088][ T6813] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.656069][ T6813] ? do_syscall_64+0x21/0x7d0 [ 62.660744][ T6813] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.666711][ T6813] do_syscall_64+0xf6/0x7d0 [ 62.671214][ T6813] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 62.677099][ T6813] RIP: 0033:0x45bee7 [ 62.680989][ T6813] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 62.700661][ T6813] RSP: 002b:00007fff2b4a45d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 62.709048][ T6813] RAX: ffffffffffffffda RBX: 000000000000f37b RCX: 000000000045bee7 [ 62.716999][ T6813] RDX: 00007fff2b4a4623 RSI: 00000000000001ff RDI: 00007fff2b4a4620 [ 62.724947][ T6813] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 62.732906][ T6813] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 62.741570][ T6813] R13: 00007fff2b4a4610 R14: 000000000000f30d R15: 00007fff2b4a4620 [ 62.750152][ T1155] CPU: 1 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 62.758065][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.768133][ T1155] Call Trace: [ 62.771439][ T1155] dump_stack+0x188/0x20d [ 62.775783][ T1155] debug_smp_processor_id.cold+0x88/0x9b [ 62.781417][ T1155] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.786563][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.792032][ T1155] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 62.798281][ T1155] ext4_ext_map_blocks+0x2044/0x3410 [ 62.803938][ T1155] ? ext4_ext_release+0x10/0x10 [ 62.808934][ T1155] ? __down_timeout+0x2d0/0x2d0 [ 62.813898][ T1155] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.819473][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 62.824324][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.829529][ T1155] ? debug_smp_processor_id+0x2f/0x185 [ 62.835025][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.840749][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.846735][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.852304][ T1155] ext4_writepages+0x1ab7/0x3400 [ 62.857409][ T1155] ? mark_lock+0x30/0xdd0 [ 62.861824][ T1155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.867470][ T1155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.873101][ T1155] ? do_writepages+0xfa/0x2a0 [ 62.877777][ T1155] do_writepages+0xfa/0x2a0 [ 62.882358][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 62.887992][ T1155] ? do_raw_spin_lock+0x129/0x2e0 [ 62.893621][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 62.898806][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 62.903642][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.909359][ T1155] ? collapse_file+0x3575/0x4300 [ 62.914276][ T1155] ? delete_from_page_cache_batch+0xec0/0xec0 [ 62.920504][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.926850][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.932815][ T1155] collapse_file+0x357f/0x4300 [ 62.937585][ T1155] ? collapse_huge_page+0x4370/0x4370 [ 62.942942][ T1155] ? khugepaged+0x24fa/0x3f80 [ 62.947615][ T1155] khugepaged+0x3049/0x3f80 [ 62.952119][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.957755][ T1155] ? lock_downgrade+0x840/0x840 [ 62.962591][ T1155] ? finish_wait+0x260/0x260 [ 62.967165][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.973678][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.979647][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 62.984655][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.990271][ T1155] kthread+0x388/0x470 [ 62.994322][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.000112][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.006094][ T1155] ret_from_fork+0x24/0x30 2020/06/14 05:46:18 building call list... [ 63.286401][ T21] tipc: TX() has been purged, node left! executing program [ 64.796563][ T6799] can: request_module (can-proto-0) failed. [ 65.280778][ T6799] can: request_module (can-proto-0) failed. [ 65.292587][ T6799] can: request_module (can-proto-0) failed.