[ 54.351354][ T6742] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.357323][ T6742] ? prandom_u32_state+0xe/0x170 [ 54.362256][ T6742] ? __brelse+0x84/0xa0 [ 54.366450][ T6742] ? __ext4_new_inode+0x144/0x57c0 [ 54.371605][ T6742] ext4_getblk+0xad/0x520 [ 54.375926][ T6742] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 54.381651][ T6742] ? ext4_free_inode+0x17e0/0x17e0 [ 54.386747][ T6742] ext4_bread+0x7c/0x380 [ 54.390971][ T6742] ? ext4_getblk+0x520/0x520 [ 54.395558][ T6742] ? dqget+0xff0/0xff0 [ 54.399617][ T6742] ext4_append+0x153/0x360 [ 54.404034][ T6742] ext4_mkdir+0x5e0/0xdf0 [ 54.408351][ T6742] ? ext4_rmdir+0xde0/0xde0 [ 54.412839][ T6742] ? security_inode_permission+0xc4/0xf0 [ 54.418468][ T6742] vfs_mkdir+0x419/0x690 [ 54.422707][ T6742] do_mkdirat+0x21e/0x280 [ 54.427016][ T6742] ? __ia32_sys_mknod+0xb0/0xb0 [ 54.431851][ T6742] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 54.437823][ T6742] ? do_syscall_64+0x21/0x7d0 [ 54.442481][ T6742] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 54.448466][ T6742] do_syscall_64+0xf6/0x7d0 [ 54.452949][ T6742] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 54.458824][ T6742] RIP: 0033:0x7f94f4fb4687 [ 54.467402][ T6742] Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 [ 54.487002][ T6742] RSP: 002b:00007ffe7bfd1918 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 54.495397][ T6742] RAX: ffffffffffffffda RBX: 000055ec01b5a985 RCX: 00007f94f4fb4687 [ 54.503346][ T6742] RDX: 00007ffe7bfd17e0 RSI: 00000000000001ed RDI: 000055ec01b5a985 [ 54.511303][ T6742] RBP: 00007f94f4fb4680 R08: 0000000000000100 R09: 0000000000000000 [ 54.519251][ T6742] R10: 000055ec01b5a980 R11: 0000000000000246 R12: 00000000000001ed [ 54.527199][ T6742] R13: 00007ffe7bfd1aa0 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 59.037658][ T3588] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/3588 [ 59.046988][ T3588] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.053234][ T3588] CPU: 1 PID: 3588 Comm: kworker/u4:5 Not tainted 5.7.0-syzkaller #0 [ 59.061299][ T3588] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.071344][ T3588] Workqueue: writeback wb_workfn (flush-8:0) [ 59.077319][ T3588] Call Trace: [ 59.080618][ T3588] dump_stack+0x188/0x20d [ 59.084946][ T3588] debug_smp_processor_id.cold+0x88/0x9b [ 59.090558][ T3588] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.095673][ T3588] ? __kmalloc+0x62f/0x7a0 [ 59.100096][ T3588] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.105543][ T3588] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.111250][ T3588] ext4_ext_map_blocks+0x2044/0x3410 [ 59.116532][ T3588] ? ext4_ext_release+0x10/0x10 [ 59.121380][ T3588] ? __down_timeout+0x2d0/0x2d0 [ 59.126206][ T3588] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.132074][ T3588] ? debug_smp_processor_id+0x2f/0x185 [ 59.137554][ T3588] ext4_map_blocks+0x4cb/0x1640 [ 59.142398][ T3588] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.147575][ T3588] ? debug_smp_processor_id+0x2f/0x185 [ 59.153039][ T3588] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.158569][ T3588] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.164529][ T3588] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.169971][ T3588] ext4_writepages+0x1ab7/0x3400 [ 59.174901][ T3588] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.180510][ T3588] ? __lock_acquire+0x2224/0x48a0 [ 59.185524][ T3588] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.191482][ T3588] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.197440][ T3588] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.203397][ T3588] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.209007][ T3588] ? do_writepages+0xfa/0x2a0 [ 59.213672][ T3588] do_writepages+0xfa/0x2a0 [ 59.218157][ T3588] ? page_writeback_cpu_online+0x10/0x10 [ 59.223782][ T3588] ? debug_smp_processor_id+0x2f/0x185 [ 59.229232][ T3588] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.234767][ T3588] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.240731][ T3588] ? lock_downgrade+0x840/0x840 [ 59.245584][ T3588] __writeback_single_inode+0x12a/0x1410 [ 59.251199][ T3588] ? _raw_spin_unlock+0x24/0x40 [ 59.256050][ T3588] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 59.262016][ T3588] writeback_sb_inodes+0x515/0xdd0 [ 59.267137][ T3588] ? __writeback_single_inode+0x1410/0x1410 [ 59.273051][ T3588] __writeback_inodes_wb+0xc3/0x250 [ 59.278252][ T3588] wb_writeback+0x910/0xd90 [ 59.282740][ T3588] ? print_usage_bug+0x240/0x240 [ 59.287673][ T3588] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 59.293987][ T3588] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 59.299866][ T3588] ? cpumask_next+0x3c/0x40 [ 59.304362][ T3588] ? get_nr_dirty_inodes+0xd6/0x130 [ 59.309541][ T3588] wb_workfn+0xadf/0x10d0 [ 59.313853][ T3588] ? inode_wait_for_writeback+0x30/0x30 [ 59.319385][ T3588] ? debug_smp_processor_id+0x2f/0x185 [ 59.324847][ T3588] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.330376][ T3588] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.336354][ T3588] process_one_work+0x965/0x16a0 [ 59.341307][ T3588] ? lock_release+0x800/0x800 [ 59.345982][ T3588] ? pwq_dec_nr_in_flight+0x310/0x310 [ 59.351353][ T3588] ? rwlock_bug.part.0+0x90/0x90 [ 59.356305][ T3588] worker_thread+0x96/0xe10 [ 59.360833][ T3588] ? process_one_work+0x16a0/0x16a0 [ 59.366013][ T3588] kthread+0x388/0x470 [ 59.370080][ T3588] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.375781][ T3588] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.381495][ T3588] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.0.91' (ECDSA) to the list of known hosts. 2020/06/13 00:47:54 fuzzer started 2020/06/13 00:47:54 connecting to host at 10.128.0.26:46275 2020/06/13 00:47:54 checking machine... 2020/06/13 00:47:54 checking revisions... 2020/06/13 00:47:54 testing simple program... [ 60.119556][ T6808] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6808 [ 60.128656][ T6808] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.134599][ T6808] CPU: 0 PID: 6808 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 60.142567][ T6808] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.152720][ T6808] Call Trace: [ 60.156009][ T6808] dump_stack+0x188/0x20d [ 60.160336][ T6808] debug_smp_processor_id.cold+0x88/0x9b [ 60.165951][ T6808] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.171056][ T6808] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.176497][ T6808] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.182208][ T6808] ext4_ext_map_blocks+0x2044/0x3410 [ 60.187661][ T6808] ? ext4_ext_release+0x10/0x10 [ 60.192515][ T6808] ? __down_timeout+0x2d0/0x2d0 [ 60.197375][ T6808] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.202902][ T6808] ext4_map_blocks+0x4cb/0x1640 [ 60.207734][ T6808] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.212907][ T6808] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.218432][ T6808] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.224385][ T6808] ? prandom_u32_state+0xe/0x170 [ 60.229301][ T6808] ? __brelse+0x84/0xa0 [ 60.233538][ T6808] ? __ext4_new_inode+0x144/0x57c0 [ 60.238628][ T6808] ext4_getblk+0xad/0x520 [ 60.243629][ T6808] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.249332][ T6808] ? ext4_free_inode+0x17e0/0x17e0 [ 60.254521][ T6808] ext4_bread+0x7c/0x380 [ 60.258755][ T6808] ? ext4_getblk+0x520/0x520 [ 60.263322][ T6808] ? dqget+0xff0/0xff0 [ 60.267372][ T6808] ext4_append+0x153/0x360 [ 60.271780][ T6808] ext4_mkdir+0x5e0/0xdf0 [ 60.276089][ T6808] ? ext4_rmdir+0xde0/0xde0 [ 60.280576][ T6808] ? security_inode_permission+0xc4/0xf0 [ 60.286201][ T6808] vfs_mkdir+0x419/0x690 [ 60.290476][ T6808] do_mkdirat+0x21e/0x280 [ 60.294785][ T6808] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.299618][ T6808] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.305841][ T6808] ? do_syscall_64+0x21/0x7d0 [ 60.310510][ T6808] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.316487][ T6808] do_syscall_64+0xf6/0x7d0 [ 60.320974][ T6808] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.331708][ T6808] RIP: 0033:0x4b02a0 [ 60.335601][ T6808] 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 [ 60.355198][ T6808] RSP: 002b:000000c0000df4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 60.363597][ T6808] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 60.371548][ T6808] RDX: 00000000000001c0 RSI: 000000c000026c00 RDI: ffffffffffffff9c [ 60.379496][ T6808] RBP: 000000c0000df510 R08: 0000000000000000 R09: 0000000000000000 [ 60.387591][ T6808] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 60.395550][ T6808] R13: 0000000000000061 R14: 0000000000000060 R15: 0000000000000100 [ 60.409805][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 60.419076][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.424994][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 60.431118][ T6823] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6823 [ 60.432879][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.442372][ T6823] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.452276][ T1154] Call Trace: [ 60.452297][ T1154] dump_stack+0x188/0x20d [ 60.452314][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 60.452327][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.452340][ T1154] ? __kmalloc+0x62f/0x7a0 [ 60.452364][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.452382][ T1154] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.492175][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 60.497451][ T1154] ? ext4_ext_release+0x10/0x10 [ 60.502295][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 60.507127][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.512576][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 60.517419][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.522599][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 60.528055][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.533603][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.539569][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.545013][ T1154] ext4_writepages+0x1ab7/0x3400 [ 60.549958][ T1154] ? mark_lock+0x30/0xdd0 [ 60.554294][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.560274][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.565888][ T1154] ? do_writepages+0xfa/0x2a0 [ 60.570547][ T1154] do_writepages+0xfa/0x2a0 [ 60.575059][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 60.580852][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 60.585857][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 60.591036][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 60.595871][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.601593][ T1154] ? collapse_file+0x3575/0x4300 [ 60.606512][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 60.612565][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 60.617746][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.623712][ T1154] collapse_file+0x357f/0x4300 [ 60.628470][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 60.633837][ T1154] ? khugepaged+0x24fa/0x3f80 [ 60.638509][ T1154] khugepaged+0x3049/0x3f80 [ 60.643011][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.648626][ T1154] ? lock_downgrade+0x840/0x840 [ 60.653458][ T1154] ? finish_wait+0x260/0x260 [ 60.658139][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.663945][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.672515][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 60.677537][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.683162][ T1154] kthread+0x388/0x470 [ 60.687311][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.693015][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.698722][ T1154] ret_from_fork+0x24/0x30 [ 60.703155][ T6823] CPU: 1 PID: 6823 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.711398][ T6823] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.721452][ T6823] Call Trace: [ 60.724754][ T6823] dump_stack+0x188/0x20d [ 60.729114][ T6823] debug_smp_processor_id.cold+0x88/0x9b [ 60.734749][ T6823] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.739878][ T6823] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.745607][ T6823] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.751326][ T6823] ext4_ext_map_blocks+0x2044/0x3410 [ 60.756608][ T6823] ? ext4_ext_release+0x10/0x10 [ 60.761534][ T6823] ? __down_timeout+0x2d0/0x2d0 [ 60.766361][ T6823] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.771800][ T6823] ext4_map_blocks+0x4cb/0x1640 [ 60.776630][ T6823] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.781805][ T6823] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.787338][ T6823] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.793292][ T6823] ? prandom_u32_state+0xe/0x170 [ 60.798203][ T6823] ? __brelse+0x84/0xa0 [ 60.802331][ T6823] ? __ext4_new_inode+0x144/0x57c0 [ 60.807417][ T6823] ext4_getblk+0xad/0x520 [ 60.811736][ T6823] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.817436][ T6823] ? ext4_free_inode+0x17e0/0x17e0 [ 60.822538][ T6823] ext4_bread+0x7c/0x380 [ 60.826753][ T6823] ? ext4_getblk+0x520/0x520 [ 60.831850][ T6823] ? dqget+0xff0/0xff0 [ 60.835908][ T6823] ext4_append+0x153/0x360 [ 60.840313][ T6823] ext4_mkdir+0x5e0/0xdf0 [ 60.844626][ T6823] ? ext4_rmdir+0xde0/0xde0 [ 60.849105][ T6823] ? security_inode_permission+0xc4/0xf0 [ 60.854725][ T6823] vfs_mkdir+0x419/0x690 [ 60.858946][ T6823] do_mkdirat+0x21e/0x280 [ 60.863251][ T6823] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.868082][ T6823] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.874044][ T6823] ? do_syscall_64+0x21/0x7d0 [ 60.878795][ T6823] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.884753][ T6823] do_syscall_64+0xf6/0x7d0 [ 60.889259][ T6823] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.895132][ T6823] RIP: 0033:0x45bee7 [ 60.899025][ T6823] 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 [ 60.918606][ T6823] RSP: 002b:00007ffe7ab77e18 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 60.927006][ T6823] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 60.934953][ T6823] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffe7ab77ff0 [ 60.942907][ T6823] RBP: 0000000000000001 R08: 000000000000f8f8 R09: 0000000000002c80 [ 60.950852][ T6823] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 60.958797][ T6823] R13: 00007ffe7ab77ff0 R14: 8421084210842109 R15: 00007ffe7ab77ffc [ 61.001869][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 61.011007][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.016989][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.024879][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.034942][ T1154] Call Trace: [ 61.038234][ T1154] dump_stack+0x188/0x20d [ 61.042570][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 61.048199][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.053321][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.058789][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.064950][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 61.066088][ T6824] IPVS: ftp: loaded support on port[0] = 21 [ 61.071013][ T1154] ? ext4_ext_release+0x10/0x10 [ 61.071042][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 61.071056][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.071076][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 61.071095][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.071107][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 61.071127][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.113118][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.119110][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.124577][ T1154] ext4_writepages+0x1ab7/0x3400 [ 61.127466][ T6824] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6824 [ 61.129533][ T1154] ? mark_lock+0x30/0xdd0 [ 61.138940][ T6824] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.143204][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.154706][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.160339][ T1154] ? do_writepages+0xfa/0x2a0 [ 61.165000][ T1154] do_writepages+0xfa/0x2a0 [ 61.169519][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 61.175156][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 61.180166][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 61.185350][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 61.190185][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.195896][ T1154] ? collapse_file+0x3575/0x4300 [ 61.200824][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 61.206882][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.212062][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.218038][ T1154] collapse_file+0x357f/0x4300 [ 61.222794][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 61.228161][ T1154] ? khugepaged+0x24fa/0x3f80 [ 61.232832][ T1154] khugepaged+0x3049/0x3f80 [ 61.237337][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.242948][ T1154] ? lock_downgrade+0x840/0x840 [ 61.247781][ T1154] ? finish_wait+0x260/0x260 [ 61.252351][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.258136][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.264111][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 61.269117][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.274729][ T1154] kthread+0x388/0x470 [ 61.278777][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.284486][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.290195][ T1154] ret_from_fork+0x24/0x30 [ 61.294607][ T6824] CPU: 1 PID: 6824 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.302857][ T6824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.312914][ T6824] Call Trace: [ 61.316206][ T6824] dump_stack+0x188/0x20d [ 61.320561][ T6824] debug_smp_processor_id.cold+0x88/0x9b [ 61.326193][ T6824] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.331327][ T6824] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.336809][ T6824] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.342515][ T6824] ext4_ext_map_blocks+0x2044/0x3410 [ 61.347794][ T6824] ? ext4_ext_release+0x10/0x10 [ 61.352645][ T6824] ? __down_timeout+0x2d0/0x2d0 [ 61.357471][ T6824] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.362923][ T6824] ext4_map_blocks+0x4cb/0x1640 [ 61.367768][ T6824] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.372940][ T6824] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.378461][ T6824] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.384414][ T6824] ? prandom_u32_state+0xe/0x170 [ 61.389327][ T6824] ? __brelse+0x84/0xa0 [ 61.393458][ T6824] ? __ext4_new_inode+0x144/0x57c0 [ 61.398547][ T6824] ext4_getblk+0xad/0x520 [ 61.402864][ T6824] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.408744][ T6824] ? ext4_free_inode+0x17e0/0x17e0 [ 61.413830][ T6824] ext4_bread+0x7c/0x380 [ 61.418060][ T6824] ? ext4_getblk+0x520/0x520 [ 61.422632][ T6824] ? dqget+0xff0/0xff0 [ 61.426676][ T6824] ext4_append+0x153/0x360 [ 61.431072][ T6824] ext4_mkdir+0x5e0/0xdf0 [ 61.435395][ T6824] ? ext4_rmdir+0xde0/0xde0 [ 61.439888][ T6824] ? security_inode_permission+0xc4/0xf0 [ 61.445507][ T6824] vfs_mkdir+0x419/0x690 [ 61.449726][ T6824] do_mkdirat+0x21e/0x280 [ 61.454031][ T6824] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.461299][ T6824] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.467262][ T6824] ? do_syscall_64+0x21/0x7d0 [ 61.471914][ T6824] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.477883][ T6824] do_syscall_64+0xf6/0x7d0 [ 61.482363][ T6824] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.488242][ T6824] RIP: 0033:0x45bee7 [ 61.492111][ T6824] 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 [ 61.511686][ T6824] RSP: 002b:00007ffe7ab77d08 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 61.520069][ T6824] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 61.528016][ T6824] RDX: 00007ffe7ab77d53 RSI: 00000000000001ff RDI: 00007ffe7ab77d50 [ 61.535971][ T6824] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 61.543916][ T6824] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 61.551877][ T6824] R13: 00007ffe7ab77d40 R14: 0000000000000000 R15: 00007ffe7ab77d50 [ 61.568608][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 61.577697][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.583592][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.591473][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.601529][ T1154] Call Trace: [ 61.604813][ T1154] dump_stack+0x188/0x20d [ 61.609122][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 61.614746][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.619884][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.625326][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.631754][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 61.637032][ T1154] ? ext4_ext_release+0x10/0x10 [ 61.641901][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 61.646749][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.652215][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 61.657070][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.662264][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 61.667727][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.673275][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.679260][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.684736][ T1154] ext4_writepages+0x1ab7/0x3400 [ 61.689679][ T1154] ? mark_lock+0x30/0xdd0 [ 61.694022][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.699679][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.705312][ T1154] ? do_writepages+0xfa/0x2a0 [ 61.710002][ T1154] do_writepages+0xfa/0x2a0 [ 61.714514][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 61.720233][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 61.725257][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 61.730455][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 61.735315][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.741034][ T1154] ? collapse_file+0x3575/0x4300 [ 61.745969][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 61.749504][ T6824] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6824 [ 61.752038][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.761483][ T6824] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.766566][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.778392][ T1154] collapse_file+0x357f/0x4300 [ 61.783172][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 61.788619][ T1154] ? khugepaged+0x24fa/0x3f80 [ 61.793290][ T1154] khugepaged+0x3049/0x3f80 [ 61.797792][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.803415][ T1154] ? lock_downgrade+0x840/0x840 [ 61.808247][ T1154] ? finish_wait+0x260/0x260 [ 61.812827][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.818612][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.824576][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 61.829591][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.835202][ T1154] kthread+0x388/0x470 [ 61.839249][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.844946][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.850645][ T1154] ret_from_fork+0x24/0x30 [ 61.855057][ T6824] CPU: 1 PID: 6824 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.863379][ T6824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.873436][ T6824] Call Trace: [ 61.876745][ T6824] dump_stack+0x188/0x20d [ 61.881082][ T6824] debug_smp_processor_id.cold+0x88/0x9b [ 61.886718][ T6824] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.891849][ T6824] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.897306][ T6824] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.903126][ T6824] ext4_ext_map_blocks+0x2044/0x3410 [ 61.908410][ T6824] ? ext4_ext_release+0x10/0x10 [ 61.913259][ T6824] ? __down_timeout+0x2d0/0x2d0 [ 61.918101][ T6824] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.923564][ T6824] ext4_map_blocks+0x4cb/0x1640 [ 61.928418][ T6824] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.933601][ T6824] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.939124][ T6824] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.945077][ T6824] ? prandom_u32_state+0xe/0x170 [ 61.950003][ T6824] ? __brelse+0x84/0xa0 [ 61.954132][ T6824] ? __ext4_new_inode+0x144/0x57c0 [ 61.959231][ T6824] ext4_getblk+0xad/0x520 [ 61.963536][ T6824] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.969233][ T6824] ? ext4_free_inode+0x17e0/0x17e0 [ 61.974320][ T6824] ext4_bread+0x7c/0x380 [ 61.978540][ T6824] ? ext4_getblk+0x520/0x520 [ 61.983104][ T6824] ? dqget+0xff0/0xff0 [ 61.987151][ T6824] ext4_append+0x153/0x360 [ 61.991553][ T6824] ext4_mkdir+0x5e0/0xdf0 [ 61.995860][ T6824] ? ext4_rmdir+0xde0/0xde0 [ 62.000777][ T6824] ? security_inode_permission+0xc4/0xf0 [ 62.006387][ T6824] vfs_mkdir+0x419/0x690 [ 62.010622][ T6824] do_mkdirat+0x21e/0x280 [ 62.014927][ T6824] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.019754][ T6824] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.025717][ T6824] ? do_syscall_64+0x21/0x7d0 [ 62.030369][ T6824] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.036322][ T6824] do_syscall_64+0xf6/0x7d0 [ 62.040801][ T6824] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 62.046673][ T6824] RIP: 0033:0x45bee7 [ 62.050552][ T6824] 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 [ 62.070142][ T6824] RSP: 002b:00007ffe7ab77d08 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 62.078533][ T6824] RAX: ffffffffffffffda RBX: 000000000000f0cf RCX: 000000000045bee7 [ 62.086483][ T6824] RDX: 00007ffe7ab77d53 RSI: 00000000000001ff RDI: 00007ffe7ab77d50 [ 62.094431][ T6824] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 62.102377][ T6824] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 62.110540][ T6824] R13: 00007ffe7ab77d40 R14: 000000000000f0cb R15: 00007ffe7ab77d50 2020/06/13 00:47:57 building call list... [ 62.386707][ T3588] tipc: TX() has been purged, node left! executing program [ 63.773544][ T6821] can: request_module (can-proto-0) failed. [ 64.371102][ T6821] can: request_module (can-proto-0) failed. [ 64.384970][ T6821] can: request_module (can-proto-0) failed.