[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 56.827092][ T83] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:3/83 [ 56.836260][ T83] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.842754][ T83] CPU: 0 PID: 83 Comm: kworker/u4:3 Not tainted 5.7.0-syzkaller #0 [ 56.850637][ T83] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.860696][ T83] Workqueue: writeback wb_workfn (flush-8:0) [ 56.866653][ T83] Call Trace: [ 56.869945][ T83] dump_stack+0x18f/0x20d [ 56.874258][ T83] debug_smp_processor_id.cold+0x88/0x9b [ 56.879886][ T83] ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.885240][ T83] ? ext4_find_extent+0x81a/0xad0 [ 56.890263][ T83] ? ext4_ext_search_right+0x2ca/0xb20 [ 56.895714][ T83] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 56.901416][ T83] ext4_ext_map_blocks+0x201b/0x33e0 [ 56.906717][ T83] ? ext4_ext_release+0x10/0x10 [ 56.911552][ T83] ? down_write_killable+0x170/0x170 [ 56.916811][ T83] ? ext4_es_lookup_extent+0x41d/0xd10 [ 56.922261][ T83] ? debug_smp_processor_id+0x2f/0x185 [ 56.927700][ T83] ext4_map_blocks+0x4cb/0x1640 [ 56.932550][ T83] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 56.937724][ T83] ? debug_smp_processor_id+0x2f/0x185 [ 56.943161][ T83] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.948696][ T83] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.954676][ T83] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 56.960113][ T83] ext4_writepages+0x1a7b/0x33c0 [ 56.965056][ T83] ? __ext4_mark_inode_dirty+0x940/0x940 [ 56.970689][ T83] ? __lock_acquire+0x2224/0x48b0 [ 56.975712][ T83] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.981684][ T83] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.987644][ T83] ? __ext4_mark_inode_dirty+0x940/0x940 [ 56.993254][ T83] ? do_writepages+0xfa/0x2a0 [ 56.997908][ T83] do_writepages+0xfa/0x2a0 [ 57.002399][ T83] ? page_writeback_cpu_online+0x10/0x10 [ 57.008023][ T83] ? debug_smp_processor_id+0x2f/0x185 [ 57.013636][ T83] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.019174][ T83] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.025136][ T83] ? lock_downgrade+0x840/0x840 [ 57.029981][ T83] __writeback_single_inode+0x12a/0x13d0 [ 57.035600][ T83] ? _raw_spin_unlock+0x24/0x40 [ 57.040445][ T83] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 57.046401][ T83] writeback_sb_inodes+0x515/0xdc0 [ 57.051512][ T83] ? __writeback_single_inode+0x13d0/0x13d0 [ 57.057395][ T83] __writeback_inodes_wb+0xc3/0x250 [ 57.062587][ T83] wb_writeback+0x8db/0xd50 [ 57.067074][ T83] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 57.073379][ T83] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 57.079249][ T83] ? cpumask_next+0x3c/0x40 [ 57.083729][ T83] ? get_nr_dirty_inodes+0xd6/0x130 [ 57.088924][ T83] wb_workfn+0xab3/0x1090 [ 57.093235][ T83] ? inode_wait_for_writeback+0x30/0x30 [ 57.098773][ T83] ? debug_smp_processor_id+0x2f/0x185 [ 57.104210][ T83] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.109737][ T83] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.115701][ T83] process_one_work+0x965/0x1690 [ 57.120637][ T83] ? lock_release+0x800/0x800 [ 57.125302][ T83] ? pwq_dec_nr_in_flight+0x310/0x310 [ 57.130655][ T83] ? rwlock_bug.part.0+0x90/0x90 [ 57.135590][ T83] worker_thread+0x96/0xe10 [ 57.140077][ T83] ? process_one_work+0x1690/0x1690 [ 57.145250][ T83] kthread+0x3b5/0x4a0 [ 57.149303][ T83] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.154995][ T83] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.160691][ T83] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.1.56' (ECDSA) to the list of known hosts. 2020/06/13 00:53:50 fuzzer started 2020/06/13 00:53:51 connecting to host at 10.128.0.26:41813 2020/06/13 00:53:51 checking machine... 2020/06/13 00:53:51 checking revisions... 2020/06/13 00:53:51 testing simple program... [ 60.619699][ T6828] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6828 [ 60.628983][ T6828] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.634879][ T6828] CPU: 0 PID: 6828 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 60.642744][ T6828] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.652782][ T6828] Call Trace: [ 60.656054][ T6828] dump_stack+0x18f/0x20d [ 60.660381][ T6828] debug_smp_processor_id.cold+0x88/0x9b [ 60.666024][ T6828] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.671121][ T6828] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.676555][ T6828] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.682274][ T6828] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.687554][ T6828] ? ext4_ext_release+0x10/0x10 [ 60.692389][ T6828] ? down_write_killable+0x170/0x170 [ 60.697665][ T6828] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.703109][ T6828] ext4_map_blocks+0x4cb/0x1640 [ 60.708021][ T6828] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.713199][ T6828] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.718729][ T6828] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.724707][ T6828] ? prandom_u32_state+0xe/0x170 [ 60.729646][ T6828] ? __brelse+0x84/0xa0 [ 60.733803][ T6828] ? __ext4_new_inode+0x144/0x55e0 [ 60.738898][ T6828] ext4_getblk+0xad/0x520 [ 60.743208][ T6828] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.748938][ T6828] ? ext4_free_inode+0x1700/0x1700 [ 60.754027][ T6828] ext4_bread+0x7c/0x380 [ 60.758248][ T6828] ? ext4_getblk+0x520/0x520 [ 60.762814][ T6828] ? dquot_get_next_dqblk+0x180/0x180 [ 60.768182][ T6828] ext4_append+0x153/0x360 [ 60.772595][ T6828] ext4_mkdir+0x5e0/0xdf0 [ 60.776924][ T6828] ? ext4_rmdir+0xde0/0xde0 [ 60.781406][ T6828] ? security_inode_permission+0xc4/0xf0 [ 60.787035][ T6828] vfs_mkdir+0x419/0x690 [ 60.791278][ T6828] do_mkdirat+0x21e/0x280 [ 60.795587][ T6828] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.800421][ T6828] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.806469][ T6828] ? do_syscall_64+0x21/0x7d0 [ 60.811122][ T6828] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.817185][ T6828] do_syscall_64+0xf6/0x7d0 [ 60.821685][ T6828] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.827661][ T6828] RIP: 0033:0x4b02a0 [ 60.831535][ T6828] Code: Bad RIP value. [ 60.835580][ T6828] RSP: 002b:000000c0000db4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 60.844020][ T6828] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 60.851981][ T6828] RDX: 00000000000001c0 RSI: 000000c00009e820 RDI: ffffffffffffff9c [ 60.860018][ T6828] RBP: 000000c0000db510 R08: 0000000000000000 R09: 0000000000000000 [ 60.867977][ T6828] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 60.875943][ T6828] R13: 0000000000000042 R14: 0000000000000041 R15: 0000000000000100 [ 60.901372][ T6844] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6844 [ 60.910788][ T6844] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.916977][ T6844] CPU: 1 PID: 6844 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.925311][ T6844] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.935373][ T6844] Call Trace: [ 60.938669][ T6844] dump_stack+0x18f/0x20d [ 60.942982][ T6844] debug_smp_processor_id.cold+0x88/0x9b [ 60.948611][ T6844] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.953726][ T6844] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.959169][ T6844] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.964927][ T6844] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.970205][ T6844] ? ext4_ext_release+0x10/0x10 [ 60.975061][ T6844] ? down_write_killable+0x170/0x170 [ 60.980341][ T6844] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.985783][ T6844] ext4_map_blocks+0x4cb/0x1640 [ 60.990632][ T6844] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.995809][ T6844] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.001592][ T6844] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.007552][ T6844] ? prandom_u32_state+0xe/0x170 [ 61.012468][ T6844] ? __brelse+0x84/0xa0 [ 61.016601][ T6844] ? __ext4_new_inode+0x144/0x55e0 [ 61.021708][ T6844] ext4_getblk+0xad/0x520 [ 61.026027][ T6844] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.031751][ T6844] ? ext4_free_inode+0x1700/0x1700 [ 61.036840][ T6844] ext4_bread+0x7c/0x380 [ 61.041096][ T6844] ? ext4_getblk+0x520/0x520 [ 61.045663][ T6844] ? dquot_get_next_dqblk+0x180/0x180 [ 61.051028][ T6844] ext4_append+0x153/0x360 [ 61.055432][ T6844] ext4_mkdir+0x5e0/0xdf0 [ 61.059741][ T6844] ? ext4_rmdir+0xde0/0xde0 [ 61.064234][ T6844] ? security_inode_permission+0xc4/0xf0 [ 61.069848][ T6844] vfs_mkdir+0x419/0x690 [ 61.074068][ T6844] do_mkdirat+0x21e/0x280 [ 61.078389][ T6844] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.083227][ T6844] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.089186][ T6844] ? do_syscall_64+0x21/0x7d0 [ 61.093859][ T6844] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.099833][ T6844] do_syscall_64+0xf6/0x7d0 [ 61.104318][ T6844] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.110189][ T6844] RIP: 0033:0x45bee7 [ 61.114056][ T6844] Code: Bad RIP value. [ 61.118094][ T6844] RSP: 002b:00007ffe04bd1aa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 61.126482][ T6844] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 61.134449][ T6844] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffe04bd1c80 [ 61.142409][ T6844] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003040 [ 61.150365][ T6844] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 61.158333][ T6844] R13: 00007ffe04bd1c80 R14: 8421084210842109 R15: 00007ffe04bd1c8c [ 61.235108][ T6845] IPVS: ftp: loaded support on port[0] = 21 [ 61.270923][ T6845] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6845 [ 61.280541][ T6845] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.286521][ T6845] CPU: 0 PID: 6845 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.294894][ T6845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.304931][ T6845] Call Trace: [ 61.308219][ T6845] dump_stack+0x18f/0x20d [ 61.312529][ T6845] debug_smp_processor_id.cold+0x88/0x9b [ 61.318137][ T6845] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.323233][ T6845] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.328669][ T6845] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.334368][ T6845] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.339633][ T6845] ? ext4_ext_release+0x10/0x10 [ 61.344490][ T6845] ? down_write_killable+0x170/0x170 [ 61.349750][ T6845] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.355208][ T6845] ext4_map_blocks+0x4cb/0x1640 [ 61.360041][ T6845] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.365241][ T6845] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.370763][ T6845] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.376736][ T6845] ? prandom_u32_state+0xe/0x170 [ 61.381657][ T6845] ? __brelse+0x84/0xa0 [ 61.385790][ T6845] ? __ext4_new_inode+0x144/0x55e0 [ 61.390882][ T6845] ext4_getblk+0xad/0x520 [ 61.395211][ T6845] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.400979][ T6845] ? ext4_free_inode+0x1700/0x1700 [ 61.406079][ T6845] ext4_bread+0x7c/0x380 [ 61.410336][ T6845] ? ext4_getblk+0x520/0x520 [ 61.414955][ T6845] ? dquot_get_next_dqblk+0x180/0x180 [ 61.420333][ T6845] ext4_append+0x153/0x360 [ 61.424737][ T6845] ext4_mkdir+0x5e0/0xdf0 [ 61.429064][ T6845] ? ext4_rmdir+0xde0/0xde0 [ 61.433568][ T6845] ? security_inode_permission+0xc4/0xf0 [ 61.439206][ T6845] vfs_mkdir+0x419/0x690 [ 61.443454][ T6845] do_mkdirat+0x21e/0x280 [ 61.447783][ T6845] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.452612][ T6845] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.458746][ T6845] ? do_syscall_64+0x21/0x7d0 [ 61.463400][ T6845] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.469374][ T6845] do_syscall_64+0xf6/0x7d0 [ 61.473857][ T6845] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.479731][ T6845] RIP: 0033:0x45bee7 [ 61.483597][ T6845] Code: Bad RIP value. [ 61.487637][ T6845] RSP: 002b:00007ffe04bd1998 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 61.496022][ T6845] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 61.503992][ T6845] RDX: 00007ffe04bd19e3 RSI: 00000000000001ff RDI: 00007ffe04bd19e0 [ 61.511940][ T6845] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 61.519901][ T6845] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 61.527855][ T6845] R13: 00007ffe04bd19d0 R14: 0000000000000000 R15: 00007ffe04bd19e0 [ 61.550963][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 61.560442][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.566424][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.574324][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.584381][ T1154] Call Trace: [ 61.587679][ T1154] dump_stack+0x18f/0x20d [ 61.592022][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 61.597657][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.602779][ T1154] ? ext4_find_extent+0x81a/0xad0 [ 61.607809][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.613458][ T1154] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.619167][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.624448][ T1154] ? ext4_ext_release+0x10/0x10 [ 61.629308][ T1154] ? down_write_killable+0x170/0x170 [ 61.634584][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.640029][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 61.644872][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.650073][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 61.655535][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.661083][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.667073][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.672526][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 61.677471][ T1154] ? mark_lock+0x70/0xdd0 [ 61.681797][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.687452][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.693073][ T1154] ? do_writepages+0xfa/0x2a0 [ 61.697734][ T1154] do_writepages+0xfa/0x2a0 [ 61.702223][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 61.707838][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 61.712844][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 61.718024][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 61.722858][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.728560][ T1154] ? collapse_file+0x35a2/0x4330 [ 61.733478][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 61.739537][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.744716][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.750680][ T1154] collapse_file+0x35ac/0x4330 [ 61.755440][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 61.760792][ T1154] ? khugepaged+0x2506/0x3fc0 [ 61.765458][ T1154] ? xas_find+0x31a/0x880 [ 61.769771][ T1154] khugepaged+0x3041/0x3fc0 [ 61.774297][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.779911][ T1154] ? lock_downgrade+0x840/0x840 [ 61.784743][ T1154] ? finish_wait+0x260/0x260 [ 61.789317][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.795106][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.801070][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 61.806077][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.811690][ T1154] kthread+0x3b5/0x4a0 [ 61.815739][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.821437][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.827140][ T1154] ret_from_fork+0x24/0x30 [ 61.855832][ T6845] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6845 [ 61.865465][ T6845] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.871366][ T6845] CPU: 0 PID: 6845 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.879600][ T6845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.889651][ T6845] Call Trace: [ 61.892954][ T6845] dump_stack+0x18f/0x20d [ 61.897300][ T6845] debug_smp_processor_id.cold+0x88/0x9b [ 61.902945][ T6845] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.908078][ T6845] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.913544][ T6845] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.919278][ T6845] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.924575][ T6845] ? ext4_ext_release+0x10/0x10 [ 61.929466][ T6845] ? down_write_killable+0x170/0x170 [ 61.934735][ T6845] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.939656][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 61.940189][ T6845] ext4_map_blocks+0x4cb/0x1640 [ 61.949454][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.954016][ T6845] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.965068][ T6845] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.970614][ T6845] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.976576][ T6845] ? prandom_u32_state+0xe/0x170 [ 61.981502][ T6845] ? __brelse+0x84/0xa0 [ 61.985641][ T6845] ? __ext4_new_inode+0x144/0x55e0 [ 61.990742][ T6845] ext4_getblk+0xad/0x520 [ 61.995057][ T6845] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.000764][ T6845] ? ext4_free_inode+0x1700/0x1700 [ 62.005861][ T6845] ext4_bread+0x7c/0x380 [ 62.010089][ T6845] ? ext4_getblk+0x520/0x520 [ 62.014677][ T6845] ? dquot_get_next_dqblk+0x180/0x180 [ 62.020040][ T6845] ext4_append+0x153/0x360 [ 62.024465][ T6845] ext4_mkdir+0x5e0/0xdf0 [ 62.028787][ T6845] ? ext4_rmdir+0xde0/0xde0 [ 62.033276][ T6845] ? security_inode_permission+0xc4/0xf0 [ 62.038901][ T6845] vfs_mkdir+0x419/0x690 [ 62.043143][ T6845] do_mkdirat+0x21e/0x280 [ 62.047459][ T6845] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.052293][ T6845] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.058258][ T6845] ? do_syscall_64+0x21/0x7d0 [ 62.062924][ T6845] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.068898][ T6845] do_syscall_64+0xf6/0x7d0 [ 62.073388][ T6845] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 62.079264][ T6845] RIP: 0033:0x45bee7 [ 62.083135][ T6845] Code: Bad RIP value. [ 62.087183][ T6845] RSP: 002b:00007ffe04bd1998 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 62.095578][ T6845] RAX: ffffffffffffffda RBX: 000000000000f193 RCX: 000000000045bee7 [ 62.103537][ T6845] RDX: 00007ffe04bd19e3 RSI: 00000000000001ff RDI: 00007ffe04bd19e0 [ 62.111509][ T6845] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 62.119464][ T6845] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 62.127417][ T6845] R13: 00007ffe04bd19d0 R14: 000000000000f06e R15: 00007ffe04bd19e0 [ 62.135395][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 62.143292][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.153428][ T1154] Call Trace: [ 62.156708][ T1154] dump_stack+0x18f/0x20d [ 62.161194][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 62.166821][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.171947][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.177418][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 62.183563][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 62.188838][ T1154] ? ext4_ext_release+0x10/0x10 [ 62.193695][ T1154] ? down_write_killable+0x170/0x170 [ 62.198972][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 62.204441][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 62.209278][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.214458][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 62.219902][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.225429][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.231391][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.236848][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 62.241785][ T1154] ? mark_lock+0x70/0xdd0 [ 62.246126][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.251758][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.257376][ T1154] ? do_writepages+0xfa/0x2a0 [ 62.262035][ T1154] do_writepages+0xfa/0x2a0 [ 62.266525][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 62.272138][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 62.277159][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 62.282337][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 62.287172][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.292889][ T1154] ? collapse_file+0x35a2/0x4330 [ 62.297808][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 62.303967][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.309146][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.315125][ T1154] collapse_file+0x35ac/0x4330 [ 62.319884][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 62.325253][ T1154] ? khugepaged+0x2506/0x3fc0 [ 62.330122][ T1154] ? xas_find+0x31a/0x880 [ 62.334437][ T1154] khugepaged+0x3041/0x3fc0 [ 62.338939][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.344554][ T1154] ? lock_downgrade+0x840/0x840 [ 62.349393][ T1154] ? finish_wait+0x260/0x260 2020/06/13 00:53:53 building call list... [ 62.353979][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.359765][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.365731][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 62.370871][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.376508][ T1154] kthread+0x3b5/0x4a0 [ 62.380590][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.386295][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.391999][ T1154] ret_from_fork+0x24/0x30 [ 62.591981][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 62.601252][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.607268][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 62.615159][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.625232][ T1154] Call Trace: [ 62.628525][ T1154] dump_stack+0x18f/0x20d [ 62.632863][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 62.638494][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.643614][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.649076][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 62.655232][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 62.660556][ T1154] ? ext4_ext_release+0x10/0x10 [ 62.665420][ T1154] ? down_write_killable+0x170/0x170 [ 62.670699][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 62.676164][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 62.681020][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.686213][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 62.691677][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.697221][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.703212][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.708672][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 62.713626][ T1154] ? mark_lock+0x70/0xdd0 [ 62.718001][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.723669][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.729323][ T1154] ? do_writepages+0xfa/0x2a0 [ 62.734005][ T1154] do_writepages+0xfa/0x2a0 [ 62.738507][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 62.744131][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 62.749163][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 62.754357][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 62.759312][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.765018][ T1154] ? collapse_file+0x35a2/0x4330 [ 62.769951][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 62.776014][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.781224][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.787206][ T1154] collapse_file+0x35ac/0x4330 [ 62.792179][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 62.797545][ T1154] ? khugepaged+0x2506/0x3fc0 [ 62.802212][ T1154] ? xas_find+0x31a/0x880 [ 62.806563][ T1154] khugepaged+0x3041/0x3fc0 [ 62.811075][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.816701][ T1154] ? lock_downgrade+0x840/0x840 [ 62.821552][ T1154] ? finish_wait+0x260/0x260 [ 62.826135][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.831937][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.837906][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 62.843051][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.848785][ T1154] kthread+0x3b5/0x4a0 [ 62.852846][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.858562][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.864277][ T1154] ret_from_fork+0x24/0x30 [ 63.024830][ T7] tipc: TX() has been purged, node left! executing program [ 64.331199][ T6831] can: request_module (can-proto-0) failed. [ 64.981591][ T6831] can: request_module (can-proto-0) failed. [ 64.993141][ T6831] can: request_module (can-proto-0) failed.