syzkaller login: [ 55.822269][ T21] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:1/21 [ 55.831400][ T21] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.837314][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.7.0-syzkaller #0 [ 55.845174][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.855228][ T21] Workqueue: writeback wb_workfn (flush-8:0) [ 55.861182][ T21] Call Trace: [ 55.864473][ T21] dump_stack+0x18f/0x20d [ 55.868782][ T21] check_preemption_disabled+0x20d/0x220 [ 55.874390][ T21] ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.879479][ T21] ? ext4_find_extent+0x81a/0xad0 [ 55.884489][ T21] ? ext4_ext_search_right+0x2ca/0xb20 [ 55.889922][ T21] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 55.895619][ T21] ext4_ext_map_blocks+0x201b/0x33e0 [ 55.900883][ T21] ? ext4_ext_release+0x10/0x10 [ 55.905738][ T21] ? down_write_killable+0x170/0x170 [ 55.910995][ T21] ? ext4_es_lookup_extent+0x41d/0xd10 [ 55.916455][ T21] ext4_map_blocks+0x4cb/0x1640 [ 55.921285][ T21] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 55.926478][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.932259][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.938211][ T21] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 55.943658][ T21] ext4_writepages+0x1a7b/0x33c0 [ 55.948595][ T21] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.954206][ T21] ? __lock_acquire+0x2224/0x48b0 [ 55.959214][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.965184][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.971138][ T21] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.976745][ T21] ? do_writepages+0xfa/0x2a0 [ 55.981396][ T21] do_writepages+0xfa/0x2a0 [ 55.985900][ T21] ? page_writeback_cpu_online+0x10/0x10 [ 55.991512][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.997044][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.002999][ T21] ? lock_downgrade+0x840/0x840 [ 56.007825][ T21] __writeback_single_inode+0x12a/0x13d0 [ 56.013432][ T21] ? _raw_spin_unlock+0x24/0x40 [ 56.018272][ T21] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 56.024232][ T21] writeback_sb_inodes+0x515/0xdc0 [ 56.029459][ T21] ? __writeback_single_inode+0x13d0/0x13d0 [ 56.035340][ T21] __writeback_inodes_wb+0xc3/0x250 [ 56.040529][ T21] wb_writeback+0x8db/0xd50 [ 56.045019][ T21] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 56.051322][ T21] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 56.057189][ T21] ? cpumask_next+0x3c/0x40 [ 56.061667][ T21] ? get_nr_dirty_inodes+0xd6/0x130 [ 56.066845][ T21] wb_workfn+0xab3/0x1090 [ 56.071154][ T21] ? inode_wait_for_writeback+0x30/0x30 [ 56.076678][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.082200][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.088157][ T21] process_one_work+0x965/0x1690 [ 56.093074][ T21] ? lock_release+0x800/0x800 [ 56.097727][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 56.103077][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 56.107992][ T21] worker_thread+0x96/0xe10 [ 56.112476][ T21] ? process_one_work+0x1690/0x1690 [ 56.117661][ T21] kthread+0x3b5/0x4a0 [ 56.121707][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.127397][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.133091][ T21] ret_from_fork+0x1f/0x30 Warning: Permanently added '10.128.15.192' (ECDSA) to the list of known hosts. 2020/06/13 18:59:25 fuzzer started 2020/06/13 18:59:26 connecting to host at 10.128.0.26:43145 2020/06/13 18:59:26 checking machine... 2020/06/13 18:59:26 checking revisions... 2020/06/13 18:59:26 testing simple program... [ 58.383170][ T6779] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6779 [ 58.392273][ T6779] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.398157][ T6779] CPU: 0 PID: 6779 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 58.406026][ T6779] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.416058][ T6779] Call Trace: [ 58.419377][ T6779] dump_stack+0x18f/0x20d [ 58.423703][ T6779] check_preemption_disabled+0x20d/0x220 [ 58.429315][ T6779] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.434417][ T6779] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.439855][ T6779] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.445554][ T6779] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.450824][ T6779] ? ext4_ext_release+0x10/0x10 [ 58.455666][ T6779] ? down_write_killable+0x170/0x170 [ 58.460942][ T6779] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.466422][ T6779] ext4_map_blocks+0x4cb/0x1640 [ 58.471253][ T6779] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.476425][ T6779] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.481944][ T6779] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.487897][ T6779] ? prandom_u32_state+0xe/0x170 [ 58.492814][ T6779] ? __brelse+0x84/0xa0 [ 58.496947][ T6779] ? __ext4_new_inode+0x144/0x55e0 [ 58.502083][ T6779] ext4_getblk+0xad/0x520 [ 58.506393][ T6779] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.512089][ T6779] ? ext4_free_inode+0x1700/0x1700 [ 58.517175][ T6779] ext4_bread+0x7c/0x380 [ 58.521392][ T6779] ? ext4_getblk+0x520/0x520 [ 58.525998][ T6779] ? dquot_get_next_dqblk+0x180/0x180 [ 58.531371][ T6779] ext4_append+0x153/0x360 [ 58.535781][ T6779] ext4_mkdir+0x5e0/0xdf0 [ 58.540089][ T6779] ? ext4_rmdir+0xde0/0xde0 [ 58.544572][ T6779] ? security_inode_permission+0xc4/0xf0 [ 58.550180][ T6779] vfs_mkdir+0x419/0x690 [ 58.554400][ T6779] do_mkdirat+0x21e/0x280 [ 58.558719][ T6779] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.563544][ T6779] ? do_syscall_64+0x1c/0xe0 [ 58.568121][ T6779] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.574093][ T6779] do_syscall_64+0x60/0xe0 [ 58.578498][ T6779] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.584365][ T6779] RIP: 0033:0x4b02a0 [ 58.588226][ T6779] Code: Bad RIP value. [ 58.592265][ T6779] RSP: 002b:000000c00004f4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 58.600662][ T6779] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 58.608613][ T6779] RDX: 00000000000001c0 RSI: 000000c0000dc3a0 RDI: ffffffffffffff9c [ 58.616560][ T6779] RBP: 000000c00004f510 R08: 0000000000000000 R09: 0000000000000000 [ 58.624508][ T6779] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 58.632459][ T6779] R13: 000000000000001e R14: 000000000000001d R15: 0000000000000100 [ 58.657705][ T6795] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6795 [ 58.667105][ T6795] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.673068][ T6795] CPU: 1 PID: 6795 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.681348][ T6795] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.691380][ T6795] Call Trace: [ 58.694694][ T6795] dump_stack+0x18f/0x20d [ 58.699003][ T6795] check_preemption_disabled+0x20d/0x220 [ 58.704628][ T6795] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.709721][ T6795] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.715156][ T6795] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.720855][ T6795] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.726134][ T6795] ? ext4_ext_release+0x10/0x10 [ 58.730972][ T6795] ? down_write_killable+0x170/0x170 [ 58.736228][ T6795] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.741667][ T6795] ext4_map_blocks+0x4cb/0x1640 [ 58.746498][ T6795] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.751670][ T6795] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.757190][ T6795] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.763156][ T6795] ? prandom_u32_state+0xe/0x170 [ 58.768068][ T6795] ? __brelse+0x84/0xa0 [ 58.772209][ T6795] ? __ext4_new_inode+0x144/0x55e0 [ 58.777295][ T6795] ext4_getblk+0xad/0x520 [ 58.781607][ T6795] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.787302][ T6795] ? ext4_free_inode+0x1700/0x1700 [ 58.792404][ T6795] ext4_bread+0x7c/0x380 [ 58.796624][ T6795] ? ext4_getblk+0x520/0x520 [ 58.801189][ T6795] ? dquot_get_next_dqblk+0x180/0x180 [ 58.806550][ T6795] ext4_append+0x153/0x360 [ 58.810945][ T6795] ext4_mkdir+0x5e0/0xdf0 [ 58.815255][ T6795] ? ext4_rmdir+0xde0/0xde0 [ 58.819745][ T6795] ? security_inode_permission+0xc4/0xf0 [ 58.825359][ T6795] vfs_mkdir+0x419/0x690 [ 58.829581][ T6795] do_mkdirat+0x21e/0x280 [ 58.833889][ T6795] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.838715][ T6795] ? do_syscall_64+0x1c/0xe0 [ 58.843294][ T6795] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.849259][ T6795] do_syscall_64+0x60/0xe0 [ 58.853657][ T6795] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.859523][ T6795] RIP: 0033:0x45bee7 [ 58.863397][ T6795] Code: Bad RIP value. [ 58.867544][ T6795] RSP: 002b:00007ffd03282a48 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 58.875927][ T6795] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 58.883873][ T6795] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffd03282c20 [ 58.891833][ T6795] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 00000000000031c0 [ 58.899790][ T6795] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 58.907735][ T6795] R13: 00007ffd03282c20 R14: 8421084210842109 R15: 00007ffd03282c2c [ 58.946183][ T1153] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1153 [ 58.955430][ T1153] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.961446][ T1153] CPU: 0 PID: 1153 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 58.969331][ T1153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.979382][ T1153] Call Trace: [ 58.982680][ T1153] dump_stack+0x18f/0x20d [ 58.987014][ T1153] check_preemption_disabled+0x20d/0x220 [ 58.992650][ T1153] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.997774][ T1153] ? ext4_find_extent+0x81a/0xad0 [ 59.002814][ T1153] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.008271][ T1153] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.013998][ T1153] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.019290][ T1153] ? ext4_ext_release+0x10/0x10 [ 59.024163][ T1153] ? down_write_killable+0x170/0x170 [ 59.024522][ T6796] IPVS: ftp: loaded support on port[0] = 21 [ 59.029442][ T1153] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.040765][ T1153] ext4_map_blocks+0x4cb/0x1640 [ 59.045640][ T1153] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.050846][ T1153] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.056393][ T1153] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.062371][ T1153] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.067833][ T1153] ext4_writepages+0x1a7b/0x33c0 [ 59.072773][ T1153] ? lock_release+0x7c0/0x800 [ 59.073944][ T6796] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6796 [ 59.077460][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.086821][ T6796] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.092429][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.092444][ T1153] ? do_writepages+0xfa/0x2a0 [ 59.092458][ T1153] do_writepages+0xfa/0x2a0 [ 59.092478][ T1153] ? page_writeback_cpu_online+0x10/0x10 [ 59.118695][ T1153] ? do_raw_spin_lock+0x120/0x2d0 [ 59.123708][ T1153] ? do_raw_spin_unlock+0x171/0x260 [ 59.128896][ T1153] ? _raw_spin_unlock+0x24/0x40 [ 59.133737][ T1153] __filemap_fdatawrite_range+0x2aa/0x390 [ 59.139441][ T1153] ? collapse_file+0x35a2/0x4330 [ 59.144362][ T1153] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 59.150440][ T1153] ? _raw_spin_unlock_irq+0x1f/0x80 [ 59.155622][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.161602][ T1153] collapse_file+0x35ac/0x4330 [ 59.166363][ T1153] ? collapse_huge_page+0x4350/0x4350 [ 59.171735][ T1153] ? khugepaged+0x2506/0x3fc0 [ 59.176433][ T1153] ? xas_find+0x31a/0x880 [ 59.180751][ T1153] ? check_preemption_disabled+0x38/0x220 [ 59.186478][ T1153] khugepaged+0x3041/0x3fc0 [ 59.190988][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.196607][ T1153] ? lock_downgrade+0x840/0x840 [ 59.201456][ T1153] ? finish_wait+0x260/0x260 [ 59.206030][ T1153] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.211816][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.217782][ T1153] ? __kthread_parkme+0x13f/0x1e0 [ 59.222800][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.228413][ T1153] kthread+0x3b5/0x4a0 [ 59.232465][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.238164][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.243866][ T1153] ret_from_fork+0x1f/0x30 [ 59.248278][ T6796] CPU: 1 PID: 6796 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.256516][ T6796] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.266573][ T6796] Call Trace: [ 59.269872][ T6796] dump_stack+0x18f/0x20d [ 59.274213][ T6796] check_preemption_disabled+0x20d/0x220 [ 59.279863][ T6796] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.284990][ T6796] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.290457][ T6796] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.296173][ T6796] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.301511][ T6796] ? ext4_ext_release+0x10/0x10 [ 59.306347][ T6796] ? down_write_killable+0x170/0x170 [ 59.311610][ T6796] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.317046][ T6796] ext4_map_blocks+0x4cb/0x1640 [ 59.321899][ T6796] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.327076][ T6796] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.332601][ T6796] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.338618][ T6796] ? prandom_u32_state+0xe/0x170 [ 59.343536][ T6796] ? __brelse+0x84/0xa0 [ 59.347714][ T6796] ? __ext4_new_inode+0x144/0x55e0 [ 59.352878][ T6796] ext4_getblk+0xad/0x520 [ 59.357201][ T6796] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.362947][ T6796] ? ext4_free_inode+0x1700/0x1700 [ 59.368043][ T6796] ext4_bread+0x7c/0x380 [ 59.372278][ T6796] ? ext4_getblk+0x520/0x520 [ 59.376870][ T6796] ? dquot_get_next_dqblk+0x180/0x180 [ 59.382247][ T6796] ext4_append+0x153/0x360 [ 59.386659][ T6796] ext4_mkdir+0x5e0/0xdf0 [ 59.390972][ T6796] ? ext4_rmdir+0xde0/0xde0 [ 59.395458][ T6796] ? security_inode_permission+0xc4/0xf0 [ 59.401076][ T6796] vfs_mkdir+0x419/0x690 [ 59.405301][ T6796] do_mkdirat+0x21e/0x280 [ 59.409609][ T6796] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.414435][ T6796] ? do_syscall_64+0x1c/0xe0 [ 59.419000][ T6796] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.425017][ T6796] do_syscall_64+0x60/0xe0 [ 59.429410][ T6796] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.435276][ T6796] RIP: 0033:0x45bee7 [ 59.439182][ T6796] Code: Bad RIP value. [ 59.443221][ T6796] RSP: 002b:00007ffd03282938 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 59.451620][ T6796] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 59.459574][ T6796] RDX: 00007ffd03282983 RSI: 00000000000001ff RDI: 00007ffd03282980 [ 59.467519][ T6796] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 59.475463][ T6796] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 59.483413][ T6796] R13: 00007ffd03282970 R14: 0000000000000000 R15: 00007ffd03282980 [ 59.504858][ T1153] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1153 [ 59.514101][ T1153] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.520440][ T1153] CPU: 0 PID: 1153 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 59.528324][ T1153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.538370][ T1153] Call Trace: [ 59.541669][ T1153] dump_stack+0x18f/0x20d [ 59.546005][ T1153] check_preemption_disabled+0x20d/0x220 [ 59.551640][ T1153] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.556765][ T1153] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.562264][ T1153] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 59.568435][ T1153] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.573734][ T1153] ? ext4_ext_release+0x10/0x10 [ 59.578604][ T1153] ? down_write_killable+0x170/0x170 [ 59.583890][ T1153] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.589359][ T1153] ext4_map_blocks+0x4cb/0x1640 [ 59.594222][ T1153] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.599429][ T1153] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.604967][ T1153] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.610937][ T1153] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.616400][ T1153] ext4_writepages+0x1a7b/0x33c0 [ 59.621343][ T1153] ? lock_release+0x7c0/0x800 [ 59.626036][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.627555][ T6796] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6796 [ 59.631686][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.631707][ T1153] ? do_writepages+0xfa/0x2a0 [ 59.641076][ T6796] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.646658][ T1153] do_writepages+0xfa/0x2a0 [ 59.661726][ T1153] ? page_writeback_cpu_online+0x10/0x10 [ 59.667340][ T1153] ? do_raw_spin_lock+0x120/0x2d0 [ 59.672343][ T1153] ? do_raw_spin_unlock+0x171/0x260 [ 59.677522][ T1153] ? _raw_spin_unlock+0x24/0x40 [ 59.682360][ T1153] __filemap_fdatawrite_range+0x2aa/0x390 [ 59.688066][ T1153] ? collapse_file+0x35a2/0x4330 [ 59.692983][ T1153] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 59.699294][ T1153] ? _raw_spin_unlock_irq+0x1f/0x80 [ 59.704472][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.710437][ T1153] collapse_file+0x35ac/0x4330 [ 59.715198][ T1153] ? collapse_huge_page+0x4350/0x4350 [ 59.720551][ T1153] ? khugepaged+0x2506/0x3fc0 [ 59.725219][ T1153] ? xas_find+0x31a/0x880 [ 59.729527][ T1153] ? check_preemption_disabled+0x38/0x220 [ 59.735233][ T1153] khugepaged+0x3041/0x3fc0 [ 59.739735][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.745347][ T1153] ? lock_downgrade+0x840/0x840 [ 59.750179][ T1153] ? finish_wait+0x260/0x260 [ 59.754749][ T1153] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.760538][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.766502][ T1153] ? __kthread_parkme+0x13f/0x1e0 [ 59.771505][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.777117][ T1153] kthread+0x3b5/0x4a0 [ 59.781165][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.786862][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.792648][ T1153] ret_from_fork+0x1f/0x30 [ 59.797062][ T6796] CPU: 1 PID: 6796 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.805294][ T6796] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.815342][ T6796] Call Trace: [ 59.818641][ T6796] dump_stack+0x18f/0x20d [ 59.822977][ T6796] check_preemption_disabled+0x20d/0x220 [ 59.826863][ T1153] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1153 [ 59.828612][ T6796] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.837670][ T1153] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.842697][ T6796] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.842712][ T6796] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.842735][ T6796] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.864992][ T6796] ? ext4_ext_release+0x10/0x10 [ 59.869836][ T6796] ? down_write_killable+0x170/0x170 [ 59.875103][ T6796] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.880549][ T6796] ext4_map_blocks+0x4cb/0x1640 [ 59.885383][ T6796] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.890561][ T6796] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.896103][ T6796] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.902062][ T6796] ? prandom_u32_state+0xe/0x170 [ 59.906980][ T6796] ? __brelse+0x84/0xa0 [ 59.911116][ T6796] ? __ext4_new_inode+0x144/0x55e0 [ 59.916208][ T6796] ext4_getblk+0xad/0x520 [ 59.920522][ T6796] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.926225][ T6796] ? ext4_free_inode+0x1700/0x1700 [ 59.931318][ T6796] ext4_bread+0x7c/0x380 [ 59.935541][ T6796] ? ext4_getblk+0x520/0x520 [ 59.940110][ T6796] ? dquot_get_next_dqblk+0x180/0x180 [ 59.945479][ T6796] ext4_append+0x153/0x360 [ 59.949884][ T6796] ext4_mkdir+0x5e0/0xdf0 [ 59.954204][ T6796] ? ext4_rmdir+0xde0/0xde0 [ 59.958692][ T6796] ? security_inode_permission+0xc4/0xf0 [ 59.964309][ T6796] vfs_mkdir+0x419/0x690 [ 59.968534][ T6796] do_mkdirat+0x21e/0x280 [ 59.972846][ T6796] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.977678][ T6796] ? do_syscall_64+0x1c/0xe0 [ 59.982253][ T6796] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.988213][ T6796] do_syscall_64+0x60/0xe0 [ 59.992612][ T6796] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.998481][ T6796] RIP: 0033:0x45bee7 [ 60.002350][ T6796] Code: Bad RIP value. [ 60.006392][ T6796] RSP: 002b:00007ffd03282938 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 60.014780][ T6796] RAX: ffffffffffffffda RBX: 000000000000e8de RCX: 000000000045bee7 [ 60.022729][ T6796] RDX: 00007ffd03282983 RSI: 00000000000001ff RDI: 00007ffd03282980 [ 60.030680][ T6796] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 60.038631][ T6796] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 60.046593][ T6796] R13: 00007ffd03282970 R14: 000000000000e87d R15: 00007ffd03282980 [ 60.054662][ T1153] CPU: 0 PID: 1153 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 60.062543][ T1153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.072581][ T1153] Call Trace: [ 60.075866][ T1153] dump_stack+0x18f/0x20d [ 60.080200][ T1153] check_preemption_disabled+0x20d/0x220 [ 60.085832][ T1153] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.090953][ T1153] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.096416][ T1153] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 60.102547][ T1153] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.107814][ T1153] ? ext4_ext_release+0x10/0x10 [ 60.112648][ T1153] ? down_write_killable+0x170/0x170 [ 60.117911][ T1153] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.123346][ T1153] ext4_map_blocks+0x4cb/0x1640 [ 60.128173][ T1153] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.133349][ T1153] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.138870][ T1153] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.144824][ T1153] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.150258][ T1153] ext4_writepages+0x1a7b/0x33c0 [ 60.155170][ T1153] ? lock_release+0x7c0/0x800 [ 60.159842][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.165596][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.171215][ T1153] ? do_writepages+0xfa/0x2a0 [ 60.175874][ T1153] do_writepages+0xfa/0x2a0 [ 60.180361][ T1153] ? page_writeback_cpu_online+0x10/0x10 [ 60.185971][ T1153] ? do_raw_spin_lock+0x120/0x2d0 [ 60.190974][ T1153] ? do_raw_spin_unlock+0x171/0x260 [ 60.196148][ T1153] ? _raw_spin_unlock+0x24/0x40 [ 60.201025][ T1153] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.206760][ T1153] ? collapse_file+0x35a2/0x4330 [ 60.211673][ T1153] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 60.217717][ T1153] ? _raw_spin_unlock_irq+0x1f/0x80 [ 60.222891][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.228848][ T1153] collapse_file+0x35ac/0x4330 [ 60.233640][ T1153] ? collapse_huge_page+0x4350/0x4350 [ 60.238983][ T1153] ? khugepaged+0x2506/0x3fc0 [ 60.243644][ T1153] ? xas_find+0x31a/0x880 [ 60.247948][ T1153] ? check_preemption_disabled+0x38/0x220 [ 60.253682][ T1153] khugepaged+0x3041/0x3fc0 [ 60.258174][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.263781][ T1153] ? lock_downgrade+0x840/0x840 [ 60.268604][ T1153] ? finish_wait+0x260/0x260 [ 60.273221][ T1153] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.279043][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.285003][ T1153] ? __kthread_parkme+0x13f/0x1e0 [ 60.290007][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.295614][ T1153] kthread+0x3b5/0x4a0 [ 60.299656][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 2020/06/13 18:59:28 building call list... [ 60.305348][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.311130][ T1153] ret_from_fork+0x1f/0x30 [ 60.619878][ T21] tipc: TX() has been purged, node left! executing program [ 62.191438][ T6793] can: request_module (can-proto-0) failed. [ 62.596076][ T6793] can: request_module (can-proto-0) failed. [ 62.607669][ T6793] can: request_module (can-proto-0) failed.