syzkaller login: [ 57.052388][ T26] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/26 [ 57.061566][ T26] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.067443][ T26] CPU: 1 PID: 26 Comm: kworker/u4:2 Not tainted 5.7.0-syzkaller #0 [ 57.075324][ T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.085398][ T26] Workqueue: writeback wb_workfn (flush-8:0) [ 57.091353][ T26] Call Trace: [ 57.094622][ T26] dump_stack+0x188/0x20d [ 57.098930][ T26] debug_smp_processor_id.cold+0x88/0x9b [ 57.104628][ T26] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.109728][ T26] ? __kmalloc+0x62f/0x7a0 [ 57.114127][ T26] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.119576][ T26] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.125291][ T26] ext4_ext_map_blocks+0x2044/0x3410 [ 57.130560][ T26] ? ext4_ext_release+0x10/0x10 [ 57.135410][ T26] ? __down_timeout+0x2d0/0x2d0 [ 57.140234][ T26] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.145672][ T26] ? debug_smp_processor_id+0x2f/0x185 [ 57.151120][ T26] ext4_map_blocks+0x4cb/0x1640 [ 57.155949][ T26] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.161119][ T26] ? debug_smp_processor_id+0x2f/0x185 [ 57.166572][ T26] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.172276][ T26] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.178926][ T26] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 57.184381][ T26] ext4_writepages+0x1ab7/0x3400 [ 57.189395][ T26] ? __ext4_mark_inode_dirty+0x950/0x950 [ 57.195004][ T26] ? __lock_acquire+0x2224/0x48a0 [ 57.200023][ T26] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.205994][ T26] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.211954][ T26] ? __ext4_mark_inode_dirty+0x950/0x950 [ 57.217573][ T26] ? do_writepages+0xfa/0x2a0 [ 57.222227][ T26] do_writepages+0xfa/0x2a0 [ 57.226735][ T26] ? page_writeback_cpu_online+0x10/0x10 [ 57.232360][ T26] ? debug_smp_processor_id+0x2f/0x185 [ 57.237848][ T26] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.243382][ T26] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.249338][ T26] ? lock_downgrade+0x840/0x840 [ 57.254168][ T26] __writeback_single_inode+0x12a/0x1410 [ 57.259781][ T26] ? _raw_spin_unlock+0x24/0x40 [ 57.264609][ T26] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 57.270580][ T26] writeback_sb_inodes+0x515/0xdd0 [ 57.276126][ T26] ? __writeback_single_inode+0x1410/0x1410 [ 57.282019][ T26] __writeback_inodes_wb+0xc3/0x250 [ 57.287198][ T26] wb_writeback+0x910/0xd90 [ 57.291702][ T26] ? print_usage_bug+0x240/0x240 [ 57.296617][ T26] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 57.302944][ T26] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 57.308829][ T26] ? cpumask_next+0x3c/0x40 [ 57.313321][ T26] ? get_nr_dirty_inodes+0xd6/0x130 [ 57.318847][ T26] wb_workfn+0xadf/0x10d0 [ 57.323160][ T26] ? inode_wait_for_writeback+0x30/0x30 [ 57.328951][ T26] ? debug_smp_processor_id+0x2f/0x185 [ 57.335344][ T26] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.341136][ T26] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.347138][ T26] process_one_work+0x965/0x16a0 [ 57.352059][ T26] ? lock_release+0x800/0x800 [ 57.356713][ T26] ? pwq_dec_nr_in_flight+0x310/0x310 [ 57.362064][ T26] ? rwlock_bug.part.0+0x90/0x90 [ 57.366993][ T26] worker_thread+0x96/0xe10 [ 57.371486][ T26] ? process_one_work+0x16a0/0x16a0 [ 57.376689][ T26] kthread+0x388/0x470 [ 57.380740][ T26] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.386536][ T26] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.392250][ T26] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.0.54' (ECDSA) to the list of known hosts. 2020/06/13 05:56:57 fuzzer started 2020/06/13 05:56:58 connecting to host at 10.128.0.26:45739 2020/06/13 05:56:58 checking machine... 2020/06/13 05:56:58 checking revisions... 2020/06/13 05:56:58 testing simple program... [ 59.502289][ T6802] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6802 [ 59.511579][ T6802] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.517460][ T6802] CPU: 0 PID: 6802 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 59.525326][ T6802] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.536491][ T6802] Call Trace: [ 59.539771][ T6802] dump_stack+0x188/0x20d [ 59.544108][ T6802] debug_smp_processor_id.cold+0x88/0x9b [ 59.549728][ T6802] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.554849][ T6802] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.560294][ T6802] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.566000][ T6802] ext4_ext_map_blocks+0x2044/0x3410 [ 59.571268][ T6802] ? ext4_ext_release+0x10/0x10 [ 59.576109][ T6802] ? __down_timeout+0x2d0/0x2d0 [ 59.580938][ T6802] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.586379][ T6802] ext4_map_blocks+0x4cb/0x1640 [ 59.591211][ T6802] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.596384][ T6802] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.601908][ T6802] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.607864][ T6802] ? prandom_u32_state+0xe/0x170 [ 59.612791][ T6802] ? __brelse+0x84/0xa0 [ 59.616946][ T6802] ? __ext4_new_inode+0x144/0x57c0 [ 59.622218][ T6802] ext4_getblk+0xad/0x520 [ 59.626543][ T6802] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.632375][ T6802] ? ext4_free_inode+0x17e0/0x17e0 [ 59.637486][ T6802] ext4_bread+0x7c/0x380 [ 59.641711][ T6802] ? ext4_getblk+0x520/0x520 [ 59.646302][ T6802] ? dqget+0xff0/0xff0 [ 59.650358][ T6802] ext4_append+0x153/0x360 [ 59.654772][ T6802] ext4_mkdir+0x5e0/0xdf0 [ 59.659088][ T6802] ? ext4_rmdir+0xde0/0xde0 [ 59.663579][ T6802] ? security_inode_permission+0xc4/0xf0 [ 59.669192][ T6802] vfs_mkdir+0x419/0x690 [ 59.673413][ T6802] do_mkdirat+0x21e/0x280 [ 59.677722][ T6802] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.682559][ T6802] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.688527][ T6802] ? do_syscall_64+0x21/0x7d0 [ 59.693196][ T6802] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.699165][ T6802] do_syscall_64+0xf6/0x7d0 [ 59.703782][ T6802] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.709650][ T6802] RIP: 0033:0x4b02a0 [ 59.713522][ T6802] 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 [ 59.733108][ T6802] RSP: 002b:000000c00004f4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 59.741501][ T6802] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 59.749463][ T6802] RDX: 00000000000001c0 RSI: 000000c0002f2480 RDI: ffffffffffffff9c [ 59.757674][ T6802] RBP: 000000c00004f510 R08: 0000000000000000 R09: 0000000000000000 [ 59.765726][ T6802] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 59.773888][ T6802] R13: 0000000000000025 R14: 0000000000000024 R15: 0000000000000100 [ 59.809809][ T6810] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6810 [ 59.819734][ T6810] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.826137][ T6810] CPU: 1 PID: 6810 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.834407][ T6810] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.844646][ T6810] Call Trace: [ 59.847926][ T6810] dump_stack+0x188/0x20d [ 59.852380][ T6810] debug_smp_processor_id.cold+0x88/0x9b [ 59.857999][ T6810] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.863205][ T6810] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.868651][ T6810] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.874366][ T6810] ext4_ext_map_blocks+0x2044/0x3410 [ 59.879724][ T6810] ? ext4_ext_release+0x10/0x10 [ 59.884572][ T6810] ? __down_timeout+0x2d0/0x2d0 [ 59.889416][ T6810] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.894857][ T6810] ext4_map_blocks+0x4cb/0x1640 [ 59.899776][ T6810] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.904951][ T6810] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.910475][ T6810] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.916518][ T6810] ? prandom_u32_state+0xe/0x170 [ 59.921436][ T6810] ? __brelse+0x84/0xa0 [ 59.925570][ T6810] ? __ext4_new_inode+0x144/0x57c0 [ 59.930660][ T6810] ext4_getblk+0xad/0x520 [ 59.934993][ T6810] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.940707][ T6810] ? ext4_free_inode+0x17e0/0x17e0 [ 59.946856][ T6810] ext4_bread+0x7c/0x380 [ 59.951083][ T6810] ? ext4_getblk+0x520/0x520 [ 59.955658][ T6810] ? dqget+0xff0/0xff0 [ 59.959757][ T6810] ext4_append+0x153/0x360 [ 59.964183][ T6810] ext4_mkdir+0x5e0/0xdf0 [ 59.968513][ T6810] ? ext4_rmdir+0xde0/0xde0 [ 59.973003][ T6810] ? security_inode_permission+0xc4/0xf0 [ 59.978625][ T6810] vfs_mkdir+0x419/0x690 [ 59.982942][ T6810] do_mkdirat+0x21e/0x280 [ 59.987276][ T6810] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.992141][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.998128][ T6810] ? do_syscall_64+0x21/0x7d0 [ 60.002820][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.008807][ T6810] do_syscall_64+0xf6/0x7d0 [ 60.013300][ T6810] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.019171][ T6810] RIP: 0033:0x45bee7 [ 60.023044][ T6810] 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 [ 60.042729][ T6810] RSP: 002b:00007ffde8579e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 60.051135][ T6810] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 60.059093][ T6810] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffde857a030 [ 60.067048][ T6810] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003300 [ 60.075009][ T6810] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 60.083199][ T6810] R13: 00007ffde857a030 R14: 8421084210842109 R15: 00007ffde857a03c [ 60.162453][ T6811] IPVS: ftp: loaded support on port[0] = 21 [ 60.199799][ T6811] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6811 [ 60.209472][ T6811] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.215642][ T6811] CPU: 0 PID: 6811 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.223879][ T6811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.233932][ T6811] Call Trace: [ 60.237212][ T6811] dump_stack+0x188/0x20d [ 60.241531][ T6811] debug_smp_processor_id.cold+0x88/0x9b [ 60.247157][ T6811] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.252274][ T6811] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.257743][ T6811] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.263445][ T6811] ext4_ext_map_blocks+0x2044/0x3410 [ 60.268742][ T6811] ? ext4_ext_release+0x10/0x10 [ 60.273596][ T6811] ? __down_timeout+0x2d0/0x2d0 [ 60.278428][ T6811] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.283869][ T6811] ext4_map_blocks+0x4cb/0x1640 [ 60.288863][ T6811] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.294153][ T6811] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.300075][ T6811] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.306057][ T6811] ? prandom_u32_state+0xe/0x170 [ 60.311058][ T6811] ? __brelse+0x84/0xa0 [ 60.315198][ T6811] ? __ext4_new_inode+0x144/0x57c0 [ 60.320313][ T6811] ext4_getblk+0xad/0x520 [ 60.324668][ T6811] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.330492][ T6811] ? ext4_free_inode+0x17e0/0x17e0 [ 60.335612][ T6811] ext4_bread+0x7c/0x380 [ 60.339861][ T6811] ? ext4_getblk+0x520/0x520 [ 60.344626][ T6811] ? dqget+0xff0/0xff0 [ 60.348688][ T6811] ext4_append+0x153/0x360 [ 60.353137][ T6811] ext4_mkdir+0x5e0/0xdf0 [ 60.357450][ T6811] ? ext4_rmdir+0xde0/0xde0 [ 60.361995][ T6811] ? security_inode_permission+0xc4/0xf0 [ 60.367610][ T6811] vfs_mkdir+0x419/0x690 [ 60.372289][ T6811] do_mkdirat+0x21e/0x280 [ 60.376647][ T6811] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.381489][ T6811] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.387596][ T6811] ? do_syscall_64+0x21/0x7d0 [ 60.392260][ T6811] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.398252][ T6811] do_syscall_64+0xf6/0x7d0 [ 60.402770][ T6811] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.408730][ T6811] RIP: 0033:0x45bee7 [ 60.412611][ T6811] 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 [ 60.432305][ T6811] RSP: 002b:00007ffde8579d48 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 60.440967][ T6811] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 60.449189][ T6811] RDX: 00007ffde8579d93 RSI: 00000000000001ff RDI: 00007ffde8579d90 [ 60.457327][ T6811] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 60.465313][ T6811] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 60.473270][ T6811] R13: 00007ffde8579d80 R14: 0000000000000000 R15: 00007ffde8579d90 [ 60.529360][ T6811] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6811 [ 60.538875][ T6811] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.544883][ T6811] CPU: 0 PID: 6811 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.553112][ T6811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.563247][ T6811] Call Trace: [ 60.566544][ T6811] dump_stack+0x188/0x20d [ 60.570889][ T6811] debug_smp_processor_id.cold+0x88/0x9b [ 60.576527][ T6811] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.581655][ T6811] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.587128][ T6811] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.592845][ T6811] ext4_ext_map_blocks+0x2044/0x3410 [ 60.598114][ T6811] ? ext4_ext_release+0x10/0x10 [ 60.602976][ T6811] ? __down_timeout+0x2d0/0x2d0 [ 60.607825][ T6811] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.613268][ T6811] ext4_map_blocks+0x4cb/0x1640 [ 60.618099][ T6811] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.623274][ T6811] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.628800][ T6811] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.634865][ T6811] ? prandom_u32_state+0xe/0x170 [ 60.639973][ T6811] ? __brelse+0x84/0xa0 [ 60.644109][ T6811] ? __ext4_new_inode+0x144/0x57c0 [ 60.649218][ T6811] ext4_getblk+0xad/0x520 [ 60.653556][ T6811] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.659281][ T6811] ? ext4_free_inode+0x17e0/0x17e0 [ 60.664438][ T6811] ext4_bread+0x7c/0x380 [ 60.668751][ T6811] ? ext4_getblk+0x520/0x520 [ 60.674772][ T6811] ? dqget+0xff0/0xff0 [ 60.678830][ T6811] ext4_append+0x153/0x360 [ 60.683377][ T6811] ext4_mkdir+0x5e0/0xdf0 [ 60.687698][ T6811] ? ext4_rmdir+0xde0/0xde0 [ 60.692213][ T6811] ? security_inode_permission+0xc4/0xf0 [ 60.698105][ T6811] vfs_mkdir+0x419/0x690 [ 60.702405][ T6811] do_mkdirat+0x21e/0x280 [ 60.706766][ T6811] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.711647][ T6811] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.717751][ T6811] ? do_syscall_64+0x21/0x7d0 [ 60.723128][ T6811] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.729159][ T6811] do_syscall_64+0xf6/0x7d0 [ 60.733667][ T6811] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.739993][ T6811] RIP: 0033:0x45bee7 [ 60.743873][ T6811] 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 [ 60.763564][ T6811] RSP: 002b:00007ffde8579d48 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 60.771969][ T6811] RAX: ffffffffffffffda RBX: 000000000000ec66 RCX: 000000000045bee7 2020/06/13 05:56:59 building call list... [ 60.780125][ T6811] RDX: 00007ffde8579d93 RSI: 00000000000001ff RDI: 00007ffde8579d90 [ 60.788092][ T6811] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 60.796069][ T6811] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 60.804034][ T6811] R13: 00007ffde8579d80 R14: 000000000000ec55 R15: 00007ffde8579d90 [ 61.080143][ T21] tipc: TX() has been purged, node left! [ 61.535174][ T1156] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1156 [ 61.544521][ T1156] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.550542][ T1156] CPU: 0 PID: 1156 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.558428][ T1156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.568478][ T1156] Call Trace: [ 61.571770][ T1156] dump_stack+0x188/0x20d [ 61.576101][ T1156] debug_smp_processor_id.cold+0x88/0x9b [ 61.581729][ T1156] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.586836][ T1156] ? __kmalloc+0x62f/0x7a0 [ 61.591258][ T1156] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.596720][ T1156] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.602437][ T1156] ext4_ext_map_blocks+0x2044/0x3410 [ 61.607725][ T1156] ? ext4_ext_release+0x10/0x10 [ 61.612616][ T1156] ? __down_timeout+0x2d0/0x2d0 [ 61.617479][ T1156] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.622944][ T1156] ext4_map_blocks+0x4cb/0x1640 [ 61.627799][ T1156] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.632991][ T1156] ? debug_smp_processor_id+0x2f/0x185 [ 61.638624][ T1156] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.644290][ T1156] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.650263][ T1156] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.655733][ T1156] ext4_writepages+0x1ab7/0x3400 [ 61.660671][ T1156] ? mark_lock+0x30/0xdd0 [ 61.665026][ T1156] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.670682][ T1156] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.676327][ T1156] ? do_writepages+0xfa/0x2a0 [ 61.680999][ T1156] do_writepages+0xfa/0x2a0 [ 61.685506][ T1156] ? page_writeback_cpu_online+0x10/0x10 [ 61.691222][ T1156] ? do_raw_spin_lock+0x129/0x2e0 [ 61.696239][ T1156] ? do_raw_spin_unlock+0x171/0x260 [ 61.701431][ T1156] ? _raw_spin_unlock+0x24/0x40 [ 61.706299][ T1156] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.712022][ T1156] ? collapse_file+0x3575/0x4300 [ 61.716965][ T1156] ? delete_from_page_cache_batch+0xec0/0xec0 [ 61.723040][ T1156] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.728241][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.734233][ T1156] collapse_file+0x357f/0x4300 [ 61.739012][ T1156] ? collapse_huge_page+0x4370/0x4370 [ 61.744376][ T1156] ? khugepaged+0x24fa/0x3f80 [ 61.749046][ T1156] ? sctp_inet6_supported_addrs+0x108/0x110 [ 61.754989][ T1156] khugepaged+0x3049/0x3f80 [ 61.759524][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.765148][ T1156] ? lock_downgrade+0x840/0x840 [ 61.769982][ T1156] ? finish_wait+0x260/0x260 [ 61.774609][ T1156] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.780415][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.786399][ T1156] ? __kthread_parkme+0x13f/0x1e0 [ 61.791441][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.797084][ T1156] kthread+0x388/0x470 [ 61.801166][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.806897][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.812615][ T1156] ret_from_fork+0x24/0x30 [ 61.893962][ T1156] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1156 [ 61.903113][ T1156] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.909025][ T1156] CPU: 0 PID: 1156 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.916913][ T1156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.927046][ T1156] Call Trace: [ 61.930340][ T1156] dump_stack+0x188/0x20d [ 61.934675][ T1156] debug_smp_processor_id.cold+0x88/0x9b [ 61.940304][ T1156] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.945424][ T1156] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.950885][ T1156] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.957064][ T1156] ext4_ext_map_blocks+0x2044/0x3410 [ 61.962461][ T1156] ? ext4_ext_release+0x10/0x10 [ 61.967421][ T1156] ? __down_timeout+0x2d0/0x2d0 [ 61.972618][ T1156] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.978382][ T1156] ext4_map_blocks+0x4cb/0x1640 [ 61.983236][ T1156] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.988436][ T1156] ? debug_smp_processor_id+0x2f/0x185 [ 61.993898][ T1156] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.999437][ T1156] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.005410][ T1156] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.010867][ T1156] ext4_writepages+0x1ab7/0x3400 [ 62.015800][ T1156] ? mark_lock+0x30/0xdd0 [ 62.020139][ T1156] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.025797][ T1156] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.031424][ T1156] ? do_writepages+0xfa/0x2a0 [ 62.036101][ T1156] do_writepages+0xfa/0x2a0 [ 62.040620][ T1156] ? page_writeback_cpu_online+0x10/0x10 [ 62.046244][ T1156] ? do_raw_spin_lock+0x129/0x2e0 [ 62.051275][ T1156] ? do_raw_spin_unlock+0x171/0x260 [ 62.056464][ T1156] ? _raw_spin_unlock+0x24/0x40 [ 62.061311][ T1156] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.067021][ T1156] ? collapse_file+0x3575/0x4300 [ 62.071948][ T1156] ? delete_from_page_cache_batch+0xec0/0xec0 [ 62.078014][ T1156] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.083203][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.089185][ T1156] collapse_file+0x357f/0x4300 [ 62.093962][ T1156] ? collapse_huge_page+0x4370/0x4370 [ 62.099332][ T1156] ? khugepaged+0x24fa/0x3f80 [ 62.104017][ T1156] ? sctp_inet6_supported_addrs+0x108/0x110 [ 62.109906][ T1156] khugepaged+0x3049/0x3f80 [ 62.114552][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.120263][ T1156] ? lock_downgrade+0x840/0x840 [ 62.125105][ T1156] ? finish_wait+0x260/0x260 [ 62.129694][ T1156] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.135491][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.141469][ T1156] ? __kthread_parkme+0x13f/0x1e0 [ 62.146487][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.152121][ T1156] kthread+0x388/0x470 [ 62.156180][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.161890][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.167604][ T1156] ret_from_fork+0x24/0x30 [ 62.245206][ T1156] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1156 [ 62.254366][ T1156] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.260446][ T1156] CPU: 0 PID: 1156 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 62.268338][ T1156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.278402][ T1156] Call Trace: [ 62.281701][ T1156] dump_stack+0x188/0x20d [ 62.286037][ T1156] debug_smp_processor_id.cold+0x88/0x9b [ 62.291758][ T1156] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.296901][ T1156] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.302368][ T1156] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 62.308540][ T1156] ext4_ext_map_blocks+0x2044/0x3410 [ 62.313922][ T1156] ? ext4_ext_release+0x10/0x10 [ 62.318892][ T1156] ? __down_timeout+0x2d0/0x2d0 [ 62.323748][ T1156] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.329223][ T1156] ext4_map_blocks+0x4cb/0x1640 [ 62.334084][ T1156] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.339455][ T1156] ? debug_smp_processor_id+0x2f/0x185 [ 62.344929][ T1156] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.350556][ T1156] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.356515][ T1156] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.361978][ T1156] ext4_writepages+0x1ab7/0x3400 [ 62.366898][ T1156] ? mark_lock+0x30/0xdd0 [ 62.371221][ T1156] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.376861][ T1156] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.382507][ T1156] ? do_writepages+0xfa/0x2a0 [ 62.387165][ T1156] do_writepages+0xfa/0x2a0 [ 62.391653][ T1156] ? page_writeback_cpu_online+0x10/0x10 [ 62.397268][ T1156] ? do_raw_spin_lock+0x129/0x2e0 [ 62.402274][ T1156] ? do_raw_spin_unlock+0x171/0x260 [ 62.407461][ T1156] ? _raw_spin_unlock+0x24/0x40 [ 62.412297][ T1156] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.418454][ T1156] ? collapse_file+0x3575/0x4300 [ 62.423915][ T1156] ? delete_from_page_cache_batch+0xec0/0xec0 [ 62.429981][ T1156] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.435244][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.441215][ T1156] collapse_file+0x357f/0x4300 [ 62.446053][ T1156] ? collapse_huge_page+0x4370/0x4370 [ 62.451497][ T1156] ? khugepaged+0x24fa/0x3f80 [ 62.456169][ T1156] ? sctp_inet6_supported_addrs+0x108/0x110 [ 62.462038][ T1156] khugepaged+0x3049/0x3f80 [ 62.467314][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.472938][ T1156] ? lock_downgrade+0x840/0x840 [ 62.477766][ T1156] ? finish_wait+0x260/0x260 [ 62.482335][ T1156] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.488574][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 executing program [ 62.494540][ T1156] ? __kthread_parkme+0x13f/0x1e0 [ 62.499567][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.505188][ T1156] kthread+0x388/0x470 [ 62.509243][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.514936][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.520650][ T1156] ret_from_fork+0x24/0x30 [ 62.716481][ T6792] can: request_module (can-proto-0) failed. [ 63.855463][ T6792] can: request_module (can-proto-0) failed. [ 63.866903][ T6792] can: request_module (can-proto-0) failed.