syzkaller login: [ 56.420814][ T1027] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:6/1027 [ 56.430129][ T1027] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.436106][ T1027] CPU: 0 PID: 1027 Comm: kworker/u4:6 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 56.445375][ T1027] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.455417][ T1027] Workqueue: writeback wb_workfn (flush-8:0) [ 56.461381][ T1027] Call Trace: [ 56.464647][ T1027] dump_stack+0x18f/0x20d [ 56.468954][ T1027] check_preemption_disabled+0x20d/0x220 [ 56.474577][ T1027] ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.479667][ T1027] ? ext4_find_extent+0x81a/0xad0 [ 56.484677][ T1027] ? ext4_ext_search_right+0x2ca/0xb20 [ 56.490118][ T1027] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 56.495828][ T1027] ext4_ext_map_blocks+0x201b/0x33e0 [ 56.501097][ T1027] ? ext4_ext_release+0x10/0x10 [ 56.505935][ T1027] ? down_write_killable+0x170/0x170 [ 56.511210][ T1027] ? ext4_es_lookup_extent+0x41d/0xd10 [ 56.516655][ T1027] ext4_map_blocks+0x4cb/0x1640 [ 56.521489][ T1027] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 56.526668][ T1027] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.532203][ T1027] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.538210][ T1027] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 56.543663][ T1027] ext4_writepages+0x1a83/0x33c0 [ 56.548613][ T1027] ? __ext4_mark_inode_dirty+0x940/0x940 [ 56.554229][ T1027] ? __lock_acquire+0x2224/0x48b0 [ 56.559328][ T1027] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.565288][ T1027] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.571245][ T1027] ? __ext4_mark_inode_dirty+0x940/0x940 [ 56.576853][ T1027] ? do_writepages+0xf3/0x2a0 [ 56.581504][ T1027] do_writepages+0xf3/0x2a0 [ 56.586521][ T1027] ? page_writeback_cpu_online+0x10/0x10 [ 56.592148][ T1027] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.597684][ T1027] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.604421][ T1027] ? lock_downgrade+0x840/0x840 [ 56.609268][ T1027] __writeback_single_inode+0x12a/0x13d0 [ 56.614877][ T1027] ? _raw_spin_unlock+0x24/0x40 [ 56.619803][ T1027] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 56.625759][ T1027] writeback_sb_inodes+0x515/0xdc0 [ 56.630857][ T1027] ? __writeback_single_inode+0x13d0/0x13d0 [ 56.636735][ T1027] __writeback_inodes_wb+0xc3/0x250 [ 56.641911][ T1027] wb_writeback+0x8c8/0xd40 [ 56.646394][ T1027] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 56.652703][ T1027] ? cpumask_next+0x3c/0x40 [ 56.657197][ T1027] ? get_nr_dirty_inodes+0xd6/0x130 [ 56.662388][ T1027] wb_workfn+0xab3/0x1090 [ 56.666697][ T1027] ? inode_wait_for_writeback+0x30/0x30 [ 56.672335][ T1027] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.677876][ T1027] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.683872][ T1027] process_one_work+0x965/0x1690 [ 56.688896][ T1027] ? lock_release+0x800/0x800 [ 56.693597][ T1027] ? pwq_dec_nr_in_flight+0x310/0x310 [ 56.698947][ T1027] ? rwlock_bug.part.0+0x90/0x90 [ 56.703867][ T1027] worker_thread+0x96/0xe10 [ 56.708372][ T1027] ? process_one_work+0x1690/0x1690 [ 56.713546][ T1027] kthread+0x3b5/0x4a0 [ 56.717591][ T1027] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.723283][ T1027] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.728993][ T1027] ret_from_fork+0x1f/0x30 Warning: Permanently added '10.128.1.25' (ECDSA) to the list of known hosts. 2020/06/08 14:08:11 fuzzer started 2020/06/08 14:08:11 connecting to host at 10.128.0.26:42933 2020/06/08 14:08:11 checking machine... 2020/06/08 14:08:11 checking revisions... 2020/06/08 14:08:11 testing simple program... [ 59.166050][ T6785] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6785 [ 59.175361][ T6785] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.181338][ T6785] CPU: 0 PID: 6785 Comm: syz-fuzzer Not tainted 5.7.0-next-20200608-syzkaller #0 [ 59.190443][ T6785] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.201068][ T6785] Call Trace: [ 59.204354][ T6785] dump_stack+0x18f/0x20d [ 59.208669][ T6785] check_preemption_disabled+0x20d/0x220 [ 59.214293][ T6785] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.219399][ T6785] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.224946][ T6785] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.230696][ T6785] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.235985][ T6785] ? ext4_ext_release+0x10/0x10 [ 59.240837][ T6785] ? down_write_killable+0x170/0x170 [ 59.246205][ T6785] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.251914][ T6785] ext4_map_blocks+0x4cb/0x1640 [ 59.256759][ T6785] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.261972][ T6785] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.267662][ T6785] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.273753][ T6785] ? prandom_u32_state+0xe/0x170 [ 59.278714][ T6785] ? __brelse+0x84/0xa0 [ 59.282949][ T6785] ? __ext4_new_inode+0x144/0x55e0 [ 59.288202][ T6785] ext4_getblk+0xad/0x520 [ 59.292522][ T6785] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.298236][ T6785] ? ext4_free_inode+0x1700/0x1700 [ 59.303334][ T6785] ext4_bread+0x7c/0x380 [ 59.307589][ T6785] ? ext4_getblk+0x520/0x520 [ 59.312206][ T6785] ? dquot_get_next_dqblk+0x180/0x180 [ 59.317574][ T6785] ext4_append+0x153/0x360 [ 59.322001][ T6785] ext4_mkdir+0x5e0/0xdf0 [ 59.326319][ T6785] ? ext4_rmdir+0xde0/0xde0 [ 59.331482][ T6785] ? security_inode_permission+0xc4/0xf0 [ 59.337395][ T6785] vfs_mkdir+0x419/0x690 [ 59.342015][ T6785] do_mkdirat+0x21e/0x280 [ 59.346338][ T6785] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.351421][ T6785] ? do_syscall_64+0x1c/0xe0 [ 59.356011][ T6785] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.361990][ T6785] do_syscall_64+0x60/0xe0 [ 59.366410][ T6785] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.372299][ T6785] RIP: 0033:0x4b02a0 [ 59.376177][ T6785] Code: Bad RIP value. [ 59.380239][ T6785] RSP: 002b:000000c00004f4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 59.388662][ T6785] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 59.396634][ T6785] RDX: 00000000000001c0 RSI: 000000c000026b60 RDI: ffffffffffffff9c [ 59.404602][ T6785] RBP: 000000c00004f510 R08: 0000000000000000 R09: 0000000000000000 [ 59.413162][ T6785] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 59.421626][ T6785] R13: 000000000000005c R14: 000000000000005b R15: 0000000000000100 [ 59.446430][ T6799] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6799 [ 59.456117][ T6799] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.462458][ T6799] CPU: 1 PID: 6799 Comm: syz-executor.0 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 59.472025][ T6799] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.482769][ T6799] Call Trace: [ 59.486048][ T6799] dump_stack+0x18f/0x20d [ 59.490386][ T6799] check_preemption_disabled+0x20d/0x220 [ 59.495999][ T6799] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.501182][ T6799] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.506761][ T6799] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.512911][ T6799] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.518202][ T6799] ? ext4_ext_release+0x10/0x10 [ 59.523068][ T6799] ? down_write_killable+0x170/0x170 [ 59.528592][ T6799] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.534083][ T6799] ext4_map_blocks+0x4cb/0x1640 [ 59.538926][ T6799] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.544111][ T6799] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.549729][ T6799] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.555699][ T6799] ? prandom_u32_state+0xe/0x170 [ 59.560879][ T6799] ? __brelse+0x84/0xa0 [ 59.565378][ T6799] ? __ext4_new_inode+0x144/0x55e0 [ 59.570489][ T6799] ext4_getblk+0xad/0x520 [ 59.575849][ T6799] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.581571][ T6799] ? ext4_free_inode+0x1700/0x1700 [ 59.586663][ T6799] ext4_bread+0x7c/0x380 [ 59.590883][ T6799] ? ext4_getblk+0x520/0x520 [ 59.595478][ T6799] ? dquot_get_next_dqblk+0x180/0x180 [ 59.600851][ T6799] ext4_append+0x153/0x360 [ 59.605267][ T6799] ext4_mkdir+0x5e0/0xdf0 [ 59.609578][ T6799] ? ext4_rmdir+0xde0/0xde0 [ 59.614068][ T6799] ? security_inode_permission+0xc4/0xf0 [ 59.620129][ T6799] vfs_mkdir+0x419/0x690 [ 59.624413][ T6799] do_mkdirat+0x21e/0x280 [ 59.625844][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 59.628744][ T6799] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.628765][ T6799] ? do_syscall_64+0x1c/0xe0 [ 59.637979][ T1155] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.642692][ T6799] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.642712][ T6799] do_syscall_64+0x60/0xe0 [ 59.642727][ T6799] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.642739][ T6799] RIP: 0033:0x45bee7 [ 59.642744][ T6799] Code: Bad RIP value. [ 59.642752][ T6799] RSP: 002b:00007fffb6472938 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 59.642765][ T6799] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 59.642777][ T6799] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007fffb6472b10 [ 59.702351][ T6799] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002a80 [ 59.710324][ T6799] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 59.718471][ T6799] R13: 00007fffb6472b10 R14: 8421084210842109 R15: 00007fffb6472b1c [ 59.726447][ T1155] CPU: 0 PID: 1155 Comm: khugepaged Not tainted 5.7.0-next-20200608-syzkaller #0 [ 59.735677][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.745758][ T1155] Call Trace: [ 59.749059][ T1155] dump_stack+0x18f/0x20d [ 59.753401][ T1155] check_preemption_disabled+0x20d/0x220 [ 59.759043][ T1155] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.764156][ T1155] ? ext4_find_extent+0x81a/0xad0 [ 59.769279][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.774748][ T1155] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.780480][ T1155] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.785784][ T1155] ? ext4_ext_release+0x10/0x10 [ 59.790768][ T1155] ? down_write_killable+0x170/0x170 [ 59.796075][ T1155] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.801566][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 59.806452][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.811658][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.817204][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.823187][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.828652][ T1155] ext4_writepages+0x1a83/0x33c0 [ 59.833641][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.839284][ T1155] ? __lock_acquire+0x2224/0x48b0 [ 59.842282][ T6800] IPVS: ftp: loaded support on port[0] = 21 [ 59.844341][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.855814][ T1155] ? do_writepages+0xf3/0x2a0 [ 59.860490][ T1155] do_writepages+0xf3/0x2a0 [ 59.865088][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 59.870723][ T1155] ? do_raw_spin_lock+0x120/0x2d0 [ 59.875752][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 59.880958][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 59.885814][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 59.892055][ T1155] ? collapse_file+0x35a2/0x4330 [ 59.896151][ T6800] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6800 [ 59.896992][ T1155] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 59.906372][ T6800] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.913167][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 59.913183][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.913206][ T1155] collapse_file+0x35ac/0x4330 [ 59.913238][ T1155] ? collapse_huge_page+0x4350/0x4350 [ 59.940337][ T1155] ? khugepaged+0x2506/0x3fc0 [ 59.945017][ T1155] ? xas_find+0x31a/0x880 [ 59.949439][ T1155] ? check_preemption_disabled+0x38/0x220 [ 59.955143][ T1155] khugepaged+0x3041/0x3fc0 [ 59.959653][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.965272][ T1155] ? lock_downgrade+0x840/0x840 [ 59.970108][ T1155] ? finish_wait+0x260/0x260 [ 59.974695][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.980482][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.986550][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 59.991557][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.997213][ T1155] kthread+0x3b5/0x4a0 [ 60.001263][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.006964][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.012672][ T1155] ret_from_fork+0x1f/0x30 [ 60.017089][ T6800] CPU: 1 PID: 6800 Comm: syz-executor.0 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 60.026548][ T6800] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.036606][ T6800] Call Trace: [ 60.039906][ T6800] dump_stack+0x18f/0x20d [ 60.044245][ T6800] check_preemption_disabled+0x20d/0x220 [ 60.050099][ T6800] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.055315][ T6800] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.060758][ T6800] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.066476][ T6800] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.071762][ T6800] ? ext4_ext_release+0x10/0x10 [ 60.076636][ T6800] ? down_write_killable+0x170/0x170 [ 60.081933][ T6800] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.087402][ T6800] ext4_map_blocks+0x4cb/0x1640 [ 60.092252][ T6800] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.097445][ T6800] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.103200][ T6800] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.109163][ T6800] ? prandom_u32_state+0xe/0x170 [ 60.114100][ T6800] ? __brelse+0x84/0xa0 [ 60.118237][ T6800] ? __ext4_new_inode+0x144/0x55e0 [ 60.123347][ T6800] ext4_getblk+0xad/0x520 [ 60.127658][ T6800] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.133369][ T6800] ? ext4_free_inode+0x1700/0x1700 [ 60.138549][ T6800] ext4_bread+0x7c/0x380 [ 60.142783][ T6800] ? ext4_getblk+0x520/0x520 [ 60.147351][ T6800] ? dquot_get_next_dqblk+0x180/0x180 [ 60.152723][ T6800] ext4_append+0x153/0x360 [ 60.157118][ T6800] ext4_mkdir+0x5e0/0xdf0 [ 60.161428][ T6800] ? ext4_rmdir+0xde0/0xde0 [ 60.165934][ T6800] ? security_inode_permission+0xc4/0xf0 [ 60.172070][ T6800] vfs_mkdir+0x419/0x690 [ 60.176377][ T6800] do_mkdirat+0x21e/0x280 [ 60.180685][ T6800] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.185514][ T6800] ? do_syscall_64+0x1c/0xe0 [ 60.190102][ T6800] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.196074][ T6800] do_syscall_64+0x60/0xe0 [ 60.200471][ T6800] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.206424][ T6800] RIP: 0033:0x45bee7 [ 60.210292][ T6800] Code: Bad RIP value. [ 60.214333][ T6800] RSP: 002b:00007fffb6472828 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 60.222716][ T6800] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 60.230690][ T6800] RDX: 00007fffb6472873 RSI: 00000000000001ff RDI: 00007fffb6472870 [ 60.238670][ T6800] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 60.247353][ T6800] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 60.255315][ T6800] R13: 00007fffb6472860 R14: 0000000000000000 R15: 00007fffb6472870 [ 60.281044][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 60.290555][ T1155] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.296460][ T1155] CPU: 0 PID: 1155 Comm: khugepaged Not tainted 5.7.0-next-20200608-syzkaller #0 [ 60.305558][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.315694][ T1155] Call Trace: [ 60.318991][ T1155] dump_stack+0x18f/0x20d [ 60.323334][ T1155] check_preemption_disabled+0x20d/0x220 [ 60.329063][ T1155] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.334187][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.339652][ T1155] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 60.345813][ T1155] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.351108][ T1155] ? ext4_ext_release+0x10/0x10 [ 60.355976][ T1155] ? down_write_killable+0x170/0x170 [ 60.361266][ T1155] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.366739][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 60.371607][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.376819][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.382376][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.386239][ T6800] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6800 [ 60.388360][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.397759][ T6800] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.403144][ T1155] ext4_writepages+0x1a83/0x33c0 [ 60.403176][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.403191][ T1155] ? __lock_acquire+0x2224/0x48b0 [ 60.403232][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.430229][ T1155] ? do_writepages+0xf3/0x2a0 [ 60.434888][ T1155] do_writepages+0xf3/0x2a0 [ 60.439374][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 60.444990][ T1155] ? do_raw_spin_lock+0x120/0x2d0 [ 60.449996][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 60.455177][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 60.460016][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.465716][ T1155] ? collapse_file+0x35a2/0x4330 [ 60.470633][ T1155] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 60.476692][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 60.481871][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.487837][ T1155] collapse_file+0x35ac/0x4330 [ 60.492603][ T1155] ? collapse_huge_page+0x4350/0x4350 [ 60.497954][ T1155] ? khugepaged+0x2506/0x3fc0 [ 60.502618][ T1155] ? xas_find+0x31a/0x880 [ 60.506928][ T1155] ? check_preemption_disabled+0x38/0x220 [ 60.512993][ T1155] khugepaged+0x3041/0x3fc0 [ 60.517500][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.523124][ T1155] ? lock_downgrade+0x840/0x840 [ 60.527955][ T1155] ? finish_wait+0x260/0x260 [ 60.532527][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.538490][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.544455][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 60.549494][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.555142][ T1155] kthread+0x3b5/0x4a0 [ 60.559192][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.564891][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.570608][ T1155] ret_from_fork+0x1f/0x30 [ 60.575051][ T6800] CPU: 1 PID: 6800 Comm: syz-executor.0 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 60.584508][ T6800] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.594565][ T6800] Call Trace: [ 60.597864][ T6800] dump_stack+0x18f/0x20d [ 60.602216][ T6800] check_preemption_disabled+0x20d/0x220 [ 60.608207][ T6800] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.613327][ T6800] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.618807][ T6800] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.621734][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 60.624525][ T6800] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.633777][ T1155] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.639015][ T6800] ? ext4_ext_release+0x10/0x10 [ 60.649726][ T6800] ? down_write_killable+0x170/0x170 [ 60.655003][ T6800] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.660468][ T6800] ext4_map_blocks+0x4cb/0x1640 [ 60.665318][ T6800] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.670499][ T6800] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.676028][ T6800] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.681990][ T6800] ? prandom_u32_state+0xe/0x170 [ 60.686910][ T6800] ? __brelse+0x84/0xa0 [ 60.691048][ T6800] ? __ext4_new_inode+0x144/0x55e0 [ 60.696141][ T6800] ext4_getblk+0xad/0x520 [ 60.700539][ T6800] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.706243][ T6800] ? ext4_free_inode+0x1700/0x1700 [ 60.711341][ T6800] ext4_bread+0x7c/0x380 [ 60.715562][ T6800] ? ext4_getblk+0x520/0x520 [ 60.720134][ T6800] ? dquot_get_next_dqblk+0x180/0x180 [ 60.725841][ T6800] ext4_append+0x153/0x360 [ 60.730253][ T6800] ext4_mkdir+0x5e0/0xdf0 [ 60.734570][ T6800] ? ext4_rmdir+0xde0/0xde0 [ 60.739071][ T6800] ? security_inode_permission+0xc4/0xf0 [ 60.744691][ T6800] vfs_mkdir+0x419/0x690 [ 60.748930][ T6800] do_mkdirat+0x21e/0x280 [ 60.753244][ T6800] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.758084][ T6800] ? do_syscall_64+0x1c/0xe0 [ 60.762657][ T6800] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.769315][ T6800] do_syscall_64+0x60/0xe0 [ 60.773725][ T6800] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.779594][ T6800] RIP: 0033:0x45bee7 [ 60.783462][ T6800] Code: Bad RIP value. [ 60.787514][ T6800] RSP: 002b:00007fffb6472828 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 60.795902][ T6800] RAX: ffffffffffffffda RBX: 000000000000ebd7 RCX: 000000000045bee7 [ 60.803862][ T6800] RDX: 00007fffb6472873 RSI: 00000000000001ff RDI: 00007fffb6472870 [ 60.811899][ T6800] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 60.819859][ T6800] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 60.827822][ T6800] R13: 00007fffb6472860 R14: 000000000000eb84 R15: 00007fffb6472870 [ 60.835796][ T1155] CPU: 0 PID: 1155 Comm: khugepaged Not tainted 5.7.0-next-20200608-syzkaller #0 [ 60.844902][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.854950][ T1155] Call Trace: [ 60.858241][ T1155] dump_stack+0x18f/0x20d [ 60.862573][ T1155] check_preemption_disabled+0x20d/0x220 [ 60.868208][ T1155] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.873331][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.878799][ T1155] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 60.884954][ T1155] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.890251][ T1155] ? ext4_ext_release+0x10/0x10 [ 60.895116][ T1155] ? down_write_killable+0x170/0x170 [ 60.900402][ T1155] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.905869][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 60.910737][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.915942][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.921499][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.927491][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.933041][ T1155] ext4_writepages+0x1a83/0x33c0 [ 60.937996][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.943629][ T1155] ? __lock_acquire+0x2224/0x48b0 [ 60.948685][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.954341][ T1155] ? do_writepages+0xf3/0x2a0 [ 60.959018][ T1155] do_writepages+0xf3/0x2a0 [ 60.963503][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 60.969108][ T1155] ? do_raw_spin_lock+0x120/0x2d0 [ 60.974114][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 60.979302][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 60.984146][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.989841][ T1155] ? collapse_file+0x35a2/0x4330 [ 60.994906][ T1155] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 61.000965][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.006204][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.012277][ T1155] collapse_file+0x35ac/0x4330 [ 61.017044][ T1155] ? collapse_huge_page+0x4350/0x4350 [ 61.022579][ T1155] ? khugepaged+0x2506/0x3fc0 [ 61.027248][ T1155] ? xas_find+0x31a/0x880 [ 61.031572][ T1155] ? check_preemption_disabled+0x38/0x220 [ 61.037274][ T1155] khugepaged+0x3041/0x3fc0 [ 61.041786][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.047396][ T1155] ? lock_downgrade+0x840/0x840 [ 61.052310][ T1155] ? finish_wait+0x260/0x260 [ 61.056906][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.062688][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.068645][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 61.073644][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.079270][ T1155] kthread+0x3b5/0x4a0 [ 61.083320][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.089012][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.094710][ T1155] ret_from_fork+0x1f/0x30 2020/06/08 14:08:13 building call list... [ 61.399801][ T156] tipc: TX() has been purged, node left! executing program [ 62.821602][ T6785] can: request_module (can-proto-0) failed. [ 63.385470][ T6785] can: request_module (can-proto-0) failed. [ 63.396787][ T6785] can: request_module (can-proto-0) failed.