[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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. [ 52.345879][ T79] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:3/79 [ 52.355031][ T79] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 52.361454][ T79] CPU: 1 PID: 79 Comm: kworker/u4:3 Not tainted 5.7.0-syzkaller #0 [ 52.369354][ T79] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.379947][ T79] Workqueue: writeback wb_workfn (flush-8:0) [ 52.385933][ T79] Call Trace: [ 52.389243][ T79] dump_stack+0x188/0x20d [ 52.393589][ T79] debug_smp_processor_id.cold+0x88/0x9b [ 52.399229][ T79] ext4_mb_new_blocks+0xa77/0x3b30 [ 52.404352][ T79] ? __kmalloc+0x62f/0x7a0 [ 52.408797][ T79] ? ext4_ext_search_right+0x2ca/0xb20 [ 52.414266][ T79] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 52.420298][ T79] ext4_ext_map_blocks+0x2044/0x3410 [ 52.420331][ T79] ? ext4_ext_release+0x10/0x10 [ 52.420363][ T79] ? __down_timeout+0x2d0/0x2d0 [ 52.420376][ T79] ? ext4_es_lookup_extent+0x41d/0xd30 [ 52.420390][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 52.420411][ T79] ext4_map_blocks+0x4cb/0x1640 [ 52.420433][ T79] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 52.420445][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 52.420467][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.420483][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.420497][ T79] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 52.420515][ T79] ext4_writepages+0x1ab7/0x3400 [ 52.420554][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 52.420567][ T79] ? __lock_acquire+0x2224/0x48a0 [ 52.420595][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 52.420615][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 52.420633][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 52.420654][ T79] ? do_writepages+0xfa/0x2a0 [ 52.420666][ T79] do_writepages+0xfa/0x2a0 [ 52.420685][ T79] ? page_writeback_cpu_online+0x10/0x10 [ 52.420696][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 52.420714][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.420729][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.420741][ T79] ? lock_downgrade+0x840/0x840 [ 52.420762][ T79] __writeback_single_inode+0x12a/0x1410 [ 52.420777][ T79] ? _raw_spin_unlock+0x24/0x40 [ 52.420792][ T79] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 52.420811][ T79] writeback_sb_inodes+0x515/0xdd0 [ 52.420840][ T79] ? __writeback_single_inode+0x1410/0x1410 [ 52.420877][ T79] __writeback_inodes_wb+0xc3/0x250 [ 52.420901][ T79] wb_writeback+0x910/0xd90 [ 52.420926][ T79] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 52.420951][ T79] ? cpumask_next+0x3c/0x40 [ 52.420968][ T79] ? get_nr_dirty_inodes+0xd6/0x130 [ 52.420990][ T79] wb_workfn+0x9d8/0x10d0 [ 52.421014][ T79] ? inode_wait_for_writeback+0x30/0x30 [ 52.421026][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 52.421047][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.421064][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.421086][ T79] process_one_work+0x965/0x16a0 [ 52.421110][ T79] ? lock_release+0x800/0x800 [ 52.421125][ T79] ? pwq_dec_nr_in_flight+0x310/0x310 [ 52.421145][ T79] ? rwlock_bug.part.0+0x90/0x90 [ 52.421178][ T79] worker_thread+0x96/0xe10 [ 52.421205][ T79] ? process_one_work+0x16a0/0x16a0 [ 52.421222][ T79] kthread+0x388/0x470 [ 52.421236][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 52.421249][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 52.421266][ T79] ret_from_fork+0x24/0x30 [ 52.515917][ T6728] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6728 [ 52.515938][ T6728] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 52.515953][ T6728] CPU: 0 PID: 6728 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 52.515961][ T6728] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.515967][ T6728] Call Trace: [ 52.515985][ T6728] dump_stack+0x188/0x20d [ 52.516005][ T6728] debug_smp_processor_id.cold+0x88/0x9b [ 52.516019][ T6728] ext4_mb_new_blocks+0xa77/0x3b30 [ 52.516047][ T6728] ? ext4_ext_search_right+0x2ca/0xb20 [ 52.516061][ T6728] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 52.516083][ T6728] ext4_ext_map_blocks+0x2044/0x3410 [ 52.516113][ T6728] ? ext4_ext_release+0x10/0x10 [ 52.516145][ T6728] ? __down_timeout+0x2d0/0x2d0 [ 52.516160][ T6728] ? ext4_es_lookup_extent+0x41d/0xd30 [ 52.516182][ T6728] ext4_map_blocks+0x4cb/0x1640 [ 52.516204][ T6728] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 52.516220][ T6728] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.516236][ T6728] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.516250][ T6728] ? prandom_u32_state+0xe/0x170 [ 52.516272][ T6728] ? __brelse+0x84/0xa0 [ 52.516288][ T6728] ? __ext4_new_inode+0x144/0x57c0 Startin[ 52.819324][ T6728] ext4_getblk+0xad/0x520 [ 52.825038][ T6728] ? ext4_iomap_overwrite_begin+0xa0/0xa0 g Load/Save RF K[ 52.830765][ T6728] ? ext4_free_inode+0x17e0/0x17e0 ill Switch Statu[ 52.837271][ T6728] ext4_bread+0x7c/0x380 [ 52.842921][ T6728] ? ext4_getblk+0x520/0x520 [ 52.847526][ T6728] ? dqget+0xff0/0xff0 s... [ 52.851605][ T6728] ext4_append+0x153/0x360 [ 52.856510][ T6728] ext4_mkdir+0x5e0/0xdf0 [ 52.860913][ T6728] ? ext4_rmdir+0xde0/0xde0 [ 52.865537][ T6728] ? security_inode_permission+0xc4/0xf0 [ 52.871176][ T6728] vfs_mkdir+0x419/0x690 [ 52.875437][ T6728] do_mkdirat+0x21e/0x280 [ 52.879751][ T6728] ? __ia32_sys_mknod+0xb0/0xb0 [ 52.884655][ T6728] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.890659][ T6728] ? do_syscall_64+0x21/0x7d0 [ 52.895343][ T6728] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.901307][ T6728] do_syscall_64+0xf6/0x7d0 [ 52.905791][ T6728] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 52.911661][ T6728] RIP: 0033:0x7f1aa0ebc687 [ 52.916063][ T6728] Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 [ 52.935659][ T6728] RSP: 002b:00007ffff835aff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 52.944057][ T6728] RAX: ffffffffffffffda RBX: 0000561c0bcc1985 RCX: 00007f1aa0ebc687 [ 52.952090][ T6728] RDX: 00007ffff835aec0 RSI: 00000000000001ed RDI: 0000561c0bcc1985 [ 52.960051][ T6728] RBP: 00007f1aa0ebc680 R08: 0000000000000100 R09: 0000000000000000 [ 52.968005][ T6728] R10: 0000561c0bcc1980 R11: 0000000000000246 R12: 00000000000001ed [ 52.975957][ T6728] R13: 00007ffff835b180 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.58' (ECDSA) to the list of known hosts. 2020/06/13 02:56:59 fuzzer started syzkaller login: [ 57.539848][ T79] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:3/79 [ 57.549049][ T79] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.555348][ T79] CPU: 1 PID: 79 Comm: kworker/u4:3 Not tainted 5.7.0-syzkaller #0 [ 57.563234][ T79] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.573283][ T79] Workqueue: writeback wb_workfn (flush-8:0) [ 57.579256][ T79] Call Trace: [ 57.582545][ T79] dump_stack+0x188/0x20d [ 57.586864][ T79] debug_smp_processor_id.cold+0x88/0x9b [ 57.592495][ T79] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.597585][ T79] ? __kmalloc+0x62f/0x7a0 [ 57.602010][ T79] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.607460][ T79] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.613162][ T79] ext4_ext_map_blocks+0x2044/0x3410 [ 57.618435][ T79] ? ext4_ext_release+0x10/0x10 [ 57.623291][ T79] ? __down_timeout+0x2d0/0x2d0 [ 57.628123][ T79] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.633562][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 57.639003][ T79] ext4_map_blocks+0x4cb/0x1640 [ 57.643838][ T79] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.649013][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 57.654975][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.660499][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.666469][ T79] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 57.671908][ T79] ext4_writepages+0x1ab7/0x3400 [ 57.676836][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 57.682447][ T79] ? __lock_acquire+0x2224/0x48a0 [ 57.687457][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.693448][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.699428][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.705388][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 57.710999][ T79] ? do_writepages+0xfa/0x2a0 [ 57.715652][ T79] do_writepages+0xfa/0x2a0 [ 57.720138][ T79] ? page_writeback_cpu_online+0x10/0x10 [ 57.725757][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 57.731198][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.736736][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.742693][ T79] ? lock_downgrade+0x840/0x840 [ 57.747524][ T79] __writeback_single_inode+0x12a/0x1410 [ 57.753142][ T79] ? _raw_spin_unlock+0x24/0x40 [ 57.757988][ T79] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 57.763947][ T79] writeback_sb_inodes+0x515/0xdd0 [ 57.769064][ T79] ? __writeback_single_inode+0x1410/0x1410 [ 57.775044][ T79] __writeback_inodes_wb+0xc3/0x250 [ 57.780257][ T79] wb_writeback+0x910/0xd90 [ 57.784754][ T79] ? print_usage_bug+0x240/0x240 [ 57.789685][ T79] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 57.796014][ T79] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 57.801892][ T79] ? cpumask_next+0x3c/0x40 [ 57.806372][ T79] ? get_nr_dirty_inodes+0xd6/0x130 [ 57.811562][ T79] wb_workfn+0xadf/0x10d0 [ 57.815873][ T79] ? inode_wait_for_writeback+0x30/0x30 [ 57.821394][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 57.826833][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.832359][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.838319][ T79] process_one_work+0x965/0x16a0 [ 57.843257][ T79] ? lock_release+0x800/0x800 [ 57.847913][ T79] ? pwq_dec_nr_in_flight+0x310/0x310 [ 57.853264][ T79] ? rwlock_bug.part.0+0x90/0x90 [ 57.858184][ T79] worker_thread+0x96/0xe10 [ 57.862687][ T79] ? process_one_work+0x16a0/0x16a0 [ 57.867865][ T79] kthread+0x388/0x470 [ 57.871913][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.877694][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.883410][ T79] ret_from_fork+0x24/0x30 [ 57.890348][ T79] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:3/79 [ 57.899394][ T79] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.905422][ T79] CPU: 1 PID: 79 Comm: kworker/u4:3 Not tainted 5.7.0-syzkaller #0 [ 57.913322][ T79] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.923389][ T79] Workqueue: writeback wb_workfn (flush-8:0) [ 57.929372][ T79] Call Trace: [ 57.932676][ T79] dump_stack+0x188/0x20d [ 57.937013][ T79] debug_smp_processor_id.cold+0x88/0x9b [ 57.942635][ T79] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.947729][ T79] ? __kmalloc+0x62f/0x7a0 [ 57.952134][ T79] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.957573][ T79] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.963535][ T79] ext4_ext_map_blocks+0x2044/0x3410 [ 57.968805][ T79] ? ext4_ext_release+0x10/0x10 [ 57.973642][ T79] ? __down_timeout+0x2d0/0x2d0 [ 57.978469][ T79] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.983905][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 57.989343][ T79] ext4_map_blocks+0x4cb/0x1640 [ 57.994185][ T79] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.999359][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 58.004797][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.010324][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.016295][ T79] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 58.021759][ T79] ext4_writepages+0x1ab7/0x3400 [ 58.026735][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 58.032391][ T79] ? __lock_acquire+0x2224/0x48a0 [ 58.037434][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 58.043425][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 58.049419][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 58.055054][ T79] ? do_writepages+0xfa/0x2a0 [ 58.059737][ T79] do_writepages+0xfa/0x2a0 [ 58.064254][ T79] ? page_writeback_cpu_online+0x10/0x10 [ 58.069894][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 58.075365][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.080927][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.086938][ T79] ? lock_downgrade+0x840/0x840 [ 58.091815][ T79] __writeback_single_inode+0x12a/0x1410 [ 58.097526][ T79] ? _raw_spin_unlock+0x24/0x40 [ 58.102363][ T79] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 58.108326][ T79] writeback_sb_inodes+0x515/0xdd0 [ 58.113438][ T79] ? __writeback_single_inode+0x1410/0x1410 [ 58.119322][ T79] __writeback_inodes_wb+0xc3/0x250 [ 58.124504][ T79] wb_writeback+0x910/0xd90 [ 58.128994][ T79] ? print_usage_bug+0x240/0x240 [ 58.133926][ T79] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 58.140232][ T79] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 58.146121][ T79] ? cpumask_next+0x3c/0x40 [ 58.150617][ T79] ? get_nr_dirty_inodes+0xd6/0x130 [ 58.155798][ T79] wb_workfn+0xadf/0x10d0 [ 58.160129][ T79] ? inode_wait_for_writeback+0x30/0x30 [ 58.165728][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 58.171186][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.176728][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.182991][ T79] process_one_work+0x965/0x16a0 [ 58.188602][ T79] ? lock_release+0x800/0x800 [ 58.193350][ T79] ? pwq_dec_nr_in_flight+0x310/0x310 [ 58.198708][ T79] ? rwlock_bug.part.0+0x90/0x90 [ 58.203633][ T79] worker_thread+0x96/0xe10 [ 58.208123][ T79] ? process_one_work+0x16a0/0x16a0 [ 58.213320][ T79] kthread+0x388/0x470 [ 58.217376][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.223075][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.228790][ T79] ret_from_fork+0x24/0x30 2020/06/13 02:57:00 connecting to host at 10.128.0.26:45855 [ 58.239299][ T79] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:3/79 [ 58.248548][ T79] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.254639][ T79] CPU: 1 PID: 79 Comm: kworker/u4:3 Not tainted 5.7.0-syzkaller #0 [ 58.262526][ T79] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.272937][ T79] Workqueue: writeback wb_workfn (flush-8:0) [ 58.278921][ T79] Call Trace: [ 58.282221][ T79] dump_stack+0x188/0x20d [ 58.286572][ T79] debug_smp_processor_id.cold+0x88/0x9b [ 58.292203][ T79] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.297293][ T79] ? __kmalloc+0x62f/0x7a0 [ 58.301716][ T79] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.307156][ T79] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.312871][ T79] ext4_ext_map_blocks+0x2044/0x3410 [ 58.318136][ T79] ? ext4_ext_release+0x10/0x10 [ 58.322976][ T79] ? __down_timeout+0x2d0/0x2d0 [ 58.327803][ T79] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.333240][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 58.338692][ T79] ext4_map_blocks+0x4cb/0x1640 [ 58.343524][ T79] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.348710][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 58.354147][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.359676][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.365653][ T79] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 58.371109][ T79] ext4_writepages+0x1ab7/0x3400 [ 58.376037][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 58.381647][ T79] ? __lock_acquire+0x2224/0x48a0 [ 58.386673][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 58.392634][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 58.398609][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 58.404229][ T79] ? do_writepages+0xfa/0x2a0 [ 58.408881][ T79] do_writepages+0xfa/0x2a0 [ 58.413367][ T79] ? page_writeback_cpu_online+0x10/0x10 [ 58.418975][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 58.424481][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.430011][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.435977][ T79] ? lock_downgrade+0x840/0x840 [ 58.440817][ T79] __writeback_single_inode+0x12a/0x1410 [ 58.446433][ T79] ? _raw_spin_unlock+0x24/0x40 [ 58.451306][ T79] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 58.457267][ T79] writeback_sb_inodes+0x515/0xdd0 [ 58.462368][ T79] ? __writeback_single_inode+0x1410/0x1410 [ 58.468249][ T79] __writeback_inodes_wb+0xc3/0x250 [ 58.473430][ T79] wb_writeback+0x910/0xd90 [ 58.477922][ T79] ? print_usage_bug+0x240/0x240 [ 58.482842][ T79] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 58.489147][ T79] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 58.495040][ T79] ? cpumask_next+0x3c/0x40 [ 58.499523][ T79] ? get_nr_dirty_inodes+0xd6/0x130 [ 58.504702][ T79] wb_workfn+0xadf/0x10d0 [ 58.509013][ T79] ? inode_wait_for_writeback+0x30/0x30 [ 58.514534][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 58.519978][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.525500][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.531460][ T79] process_one_work+0x965/0x16a0 [ 58.536380][ T79] ? lock_release+0x800/0x800 2020/06/13 02:57:00 checking machine... 2020/06/13 02:57:00 checking revisions... [ 58.541035][ T79] ? pwq_dec_nr_in_flight+0x310/0x310 [ 58.546386][ T79] ? rwlock_bug.part.0+0x90/0x90 [ 58.551305][ T79] worker_thread+0x96/0xe10 [ 58.555809][ T79] ? process_one_work+0x16a0/0x16a0 [ 58.560984][ T79] kthread+0x388/0x470 [ 58.565029][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.570723][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.576419][ T79] ret_from_fork+0x24/0x30 [ 58.583919][ T79] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:3/79 2020/06/13 02:57:00 testing simple program... [ 58.593076][ T79] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.598982][ T79] CPU: 1 PID: 79 Comm: kworker/u4:3 Not tainted 5.7.0-syzkaller #0 [ 58.606870][ T79] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.616939][ T79] Workqueue: writeback wb_workfn (flush-8:0) [ 58.622919][ T79] Call Trace: [ 58.626223][ T79] dump_stack+0x188/0x20d [ 58.630571][ T79] debug_smp_processor_id.cold+0x88/0x9b [ 58.636210][ T79] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.641328][ T79] ? __kmalloc+0x62f/0x7a0 [ 58.645764][ T79] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.651231][ T79] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.656965][ T79] ext4_ext_map_blocks+0x2044/0x3410 [ 58.662266][ T79] ? ext4_ext_release+0x10/0x10 [ 58.667140][ T79] ? __down_timeout+0x2d0/0x2d0 [ 58.671993][ T79] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.677458][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 58.682930][ T79] ext4_map_blocks+0x4cb/0x1640 [ 58.687791][ T79] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.692986][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 58.698889][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.704440][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.710427][ T79] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 58.715895][ T79] ext4_writepages+0x1ab7/0x3400 [ 58.720863][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 58.726499][ T79] ? __lock_acquire+0x2224/0x48a0 [ 58.731554][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 58.737553][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 58.743551][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 58.749446][ T79] ? do_writepages+0xfa/0x2a0 [ 58.754123][ T79] do_writepages+0xfa/0x2a0 [ 58.758637][ T79] ? page_writeback_cpu_online+0x10/0x10 [ 58.764268][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 58.769735][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.775283][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.781263][ T79] ? lock_downgrade+0x840/0x840 [ 58.786122][ T79] __writeback_single_inode+0x12a/0x1410 [ 58.791757][ T79] ? _raw_spin_unlock+0x24/0x40 [ 58.796610][ T79] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 58.802594][ T79] writeback_sb_inodes+0x515/0xdd0 [ 58.807716][ T79] ? __writeback_single_inode+0x1410/0x1410 [ 58.813637][ T79] __writeback_inodes_wb+0xc3/0x250 [ 58.818861][ T79] wb_writeback+0x910/0xd90 [ 58.823368][ T79] ? print_usage_bug+0x240/0x240 [ 58.828315][ T79] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 58.834644][ T79] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 58.840552][ T79] ? cpumask_next+0x3c/0x40 [ 58.845055][ T79] ? get_nr_dirty_inodes+0xd6/0x130 [ 58.850261][ T79] wb_workfn+0xadf/0x10d0 [ 58.854600][ T79] ? inode_wait_for_writeback+0x30/0x30 [ 58.860147][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 58.865613][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.871162][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.877151][ T79] process_one_work+0x965/0x16a0 [ 58.882098][ T79] ? lock_release+0x800/0x800 [ 58.886816][ T79] ? pwq_dec_nr_in_flight+0x310/0x310 [ 58.892199][ T79] ? rwlock_bug.part.0+0x90/0x90 [ 58.892431][ T6807] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6807 [ 58.897142][ T79] worker_thread+0x96/0xe10 [ 58.906212][ T6807] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.910633][ T79] ? process_one_work+0x16a0/0x16a0 [ 58.910650][ T79] kthread+0x388/0x470 [ 58.910663][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.910676][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.910695][ T79] ret_from_fork+0x24/0x30 [ 58.941575][ T6807] CPU: 0 PID: 6807 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 58.943936][ T79] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:3/79 [ 58.949458][ T6807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.949464][ T6807] Call Trace: [ 58.949485][ T6807] dump_stack+0x188/0x20d [ 58.949503][ T6807] debug_smp_processor_id.cold+0x88/0x9b [ 58.949517][ T6807] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.949541][ T6807] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.949554][ T6807] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.949572][ T6807] ext4_ext_map_blocks+0x2044/0x3410 [ 58.949591][ T6807] ? ext4_ext_release+0x10/0x10 [ 58.949621][ T6807] ? __down_timeout+0x2d0/0x2d0 [ 58.949634][ T6807] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.949655][ T6807] ext4_map_blocks+0x4cb/0x1640 [ 58.949676][ T6807] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.949689][ T6807] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.949708][ T6807] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.958706][ T79] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.968738][ T6807] ? prandom_u32_state+0xe/0x170 [ 58.968753][ T6807] ? __brelse+0x84/0xa0 [ 58.968766][ T6807] ? __ext4_new_inode+0x144/0x57c0 [ 58.968783][ T6807] ext4_getblk+0xad/0x520 [ 58.968800][ T6807] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.968820][ T6807] ? ext4_free_inode+0x17e0/0x17e0 [ 58.968836][ T6807] ext4_bread+0x7c/0x380 [ 58.968848][ T6807] ? ext4_getblk+0x520/0x520 [ 58.968865][ T6807] ? dqget+0xff0/0xff0 [ 59.087930][ T6807] ext4_append+0x153/0x360 [ 59.092336][ T6807] ext4_mkdir+0x5e0/0xdf0 [ 59.096652][ T6807] ? ext4_rmdir+0xde0/0xde0 [ 59.101232][ T6807] ? security_inode_permission+0xc4/0xf0 [ 59.106865][ T6807] vfs_mkdir+0x419/0x690 [ 59.111108][ T6807] do_mkdirat+0x21e/0x280 [ 59.115706][ T6807] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.120549][ T6807] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.126524][ T6807] ? do_syscall_64+0x21/0x7d0 [ 59.131188][ T6807] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.137176][ T6807] do_syscall_64+0xf6/0x7d0 [ 59.141690][ T6807] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.147564][ T6807] RIP: 0033:0x4b02a0 [ 59.151443][ T6807] 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 [ 59.171055][ T6807] RSP: 002b:000000c00004f4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 59.179469][ T6807] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 59.187443][ T6807] RDX: 00000000000001c0 RSI: 000000c0000ccb80 RDI: ffffffffffffff9c [ 59.195396][ T6807] RBP: 000000c00004f510 R08: 0000000000000000 R09: 0000000000000000 [ 59.203443][ T6807] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 59.211396][ T6807] R13: 000000000000005d R14: 000000000000005c R15: 0000000000000100 [ 59.219371][ T79] CPU: 1 PID: 79 Comm: kworker/u4:3 Not tainted 5.7.0-syzkaller #0 [ 59.227268][ T79] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.237895][ T79] Workqueue: writeback wb_workfn (flush-8:0) [ 59.243888][ T79] Call Trace: [ 59.247183][ T79] dump_stack+0x188/0x20d [ 59.251527][ T79] debug_smp_processor_id.cold+0x88/0x9b [ 59.257166][ T79] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.262281][ T79] ? __kmalloc+0x62f/0x7a0 [ 59.266720][ T79] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.272192][ T79] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.273854][ T6809] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6809 [ 59.278210][ T79] ext4_ext_map_blocks+0x2044/0x3410 [ 59.287625][ T6809] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.292879][ T79] ? ext4_ext_release+0x10/0x10 [ 59.292910][ T79] ? __down_timeout+0x2d0/0x2d0 [ 59.292924][ T79] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.292938][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 59.292959][ T79] ext4_map_blocks+0x4cb/0x1640 [ 59.324150][ T79] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.329346][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 59.334808][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.340344][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.346329][ T79] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.351788][ T79] ext4_writepages+0x1ab7/0x3400 [ 59.356742][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.362358][ T79] ? __lock_acquire+0x2224/0x48a0 [ 59.367380][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.373347][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.379313][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.384932][ T79] ? do_writepages+0xfa/0x2a0 [ 59.389595][ T79] do_writepages+0xfa/0x2a0 [ 59.394090][ T79] ? page_writeback_cpu_online+0x10/0x10 [ 59.399727][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 59.405173][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.410743][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.416755][ T79] ? lock_downgrade+0x840/0x840 [ 59.421606][ T79] __writeback_single_inode+0x12a/0x1410 [ 59.427234][ T79] ? _raw_spin_unlock+0x24/0x40 [ 59.432085][ T79] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 59.438073][ T79] writeback_sb_inodes+0x515/0xdd0 [ 59.443199][ T79] ? __writeback_single_inode+0x1410/0x1410 [ 59.449092][ T79] __writeback_inodes_wb+0xc3/0x250 [ 59.454294][ T79] wb_writeback+0x910/0xd90 [ 59.458784][ T79] ? print_usage_bug+0x240/0x240 [ 59.463709][ T79] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 59.470021][ T79] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 59.475910][ T79] ? cpumask_next+0x3c/0x40 [ 59.480414][ T79] ? get_nr_dirty_inodes+0xd6/0x130 [ 59.485601][ T79] wb_workfn+0xadf/0x10d0 [ 59.489923][ T79] ? inode_wait_for_writeback+0x30/0x30 [ 59.495453][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 59.500987][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.506515][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.512486][ T79] process_one_work+0x965/0x16a0 [ 59.517458][ T79] ? lock_release+0x800/0x800 [ 59.522122][ T79] ? pwq_dec_nr_in_flight+0x310/0x310 [ 59.527488][ T79] ? rwlock_bug.part.0+0x90/0x90 [ 59.532416][ T79] worker_thread+0x96/0xe10 [ 59.536913][ T79] ? process_one_work+0x16a0/0x16a0 [ 59.542095][ T79] kthread+0x388/0x470 [ 59.546171][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.551874][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.557594][ T79] ret_from_fork+0x24/0x30 [ 59.562015][ T6809] CPU: 0 PID: 6809 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.564802][ T79] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:3/79 [ 59.570255][ T6809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.570261][ T6809] Call Trace: [ 59.570282][ T6809] dump_stack+0x188/0x20d [ 59.570300][ T6809] debug_smp_processor_id.cold+0x88/0x9b [ 59.570315][ T6809] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.570339][ T6809] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.570351][ T6809] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.570370][ T6809] ext4_ext_map_blocks+0x2044/0x3410 [ 59.579435][ T79] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.589422][ T6809] ? ext4_ext_release+0x10/0x10 [ 59.589452][ T6809] ? __down_timeout+0x2d0/0x2d0 [ 59.589469][ T6809] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.645098][ T6809] ext4_map_blocks+0x4cb/0x1640 [ 59.649941][ T6809] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.655145][ T6809] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.660693][ T6809] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.666681][ T6809] ? prandom_u32_state+0xe/0x170 [ 59.671604][ T6809] ? __brelse+0x84/0xa0 [ 59.675744][ T6809] ? __ext4_new_inode+0x144/0x57c0 [ 59.680841][ T6809] ext4_getblk+0xad/0x520 [ 59.685160][ T6809] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.690867][ T6809] ? ext4_free_inode+0x17e0/0x17e0 [ 59.695966][ T6809] ext4_bread+0x7c/0x380 [ 59.700193][ T6809] ? ext4_getblk+0x520/0x520 [ 59.704766][ T6809] ? dqget+0xff0/0xff0 [ 59.708829][ T6809] ext4_append+0x153/0x360 [ 59.713233][ T6809] ext4_mkdir+0x5e0/0xdf0 [ 59.717552][ T6809] ? ext4_rmdir+0xde0/0xde0 [ 59.722045][ T6809] ? security_inode_permission+0xc4/0xf0 [ 59.727667][ T6809] vfs_mkdir+0x419/0x690 [ 59.731899][ T6809] do_mkdirat+0x21e/0x280 [ 59.736213][ T6809] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.741046][ T6809] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.747012][ T6809] ? do_syscall_64+0x21/0x7d0 [ 59.751677][ T6809] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.757641][ T6809] do_syscall_64+0xf6/0x7d0 [ 59.762169][ T6809] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.768043][ T6809] RIP: 0033:0x45bee7 [ 59.771920][ T6809] 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 [ 59.791507][ T6809] RSP: 002b:00007fff518aada8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 59.799911][ T6809] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 59.807876][ T6809] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007fff518aaf80 [ 59.815833][ T6809] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002c80 [ 59.823786][ T6809] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 59.831757][ T6809] R13: 00007fff518aaf80 R14: 8421084210842109 R15: 00007fff518aaf8c [ 59.839731][ T79] CPU: 1 PID: 79 Comm: kworker/u4:3 Not tainted 5.7.0-syzkaller #0 [ 59.847639][ T79] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.857711][ T79] Workqueue: writeback wb_workfn (flush-8:0) [ 59.863693][ T79] Call Trace: [ 59.866990][ T79] dump_stack+0x188/0x20d [ 59.871332][ T79] debug_smp_processor_id.cold+0x88/0x9b [ 59.877091][ T79] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.882229][ T79] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.887707][ T79] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 59.893876][ T79] ext4_ext_map_blocks+0x2044/0x3410 [ 59.899174][ T79] ? ext4_ext_release+0x10/0x10 [ 59.904048][ T79] ? __down_timeout+0x2d0/0x2d0 [ 59.908906][ T79] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.914380][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 59.919855][ T79] ext4_map_blocks+0x4cb/0x1640 [ 59.924724][ T79] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.929929][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 59.935402][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.940958][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.946945][ T79] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.952422][ T79] ext4_writepages+0x1ab7/0x3400 [ 59.957398][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.963063][ T79] ? __lock_acquire+0x2224/0x48a0 [ 59.968120][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.974122][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.979787][ T6810] IPVS: ftp: loaded support on port[0] = 21 [ 59.980111][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.991608][ T79] ? do_writepages+0xfa/0x2a0 [ 59.996297][ T79] do_writepages+0xfa/0x2a0 [ 60.000815][ T79] ? page_writeback_cpu_online+0x10/0x10 [ 60.006454][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 60.011940][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.017498][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.023484][ T79] ? lock_downgrade+0x840/0x840 [ 60.028347][ T79] __writeback_single_inode+0x12a/0x1410 [ 60.030447][ T6810] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6810 [ 60.033984][ T79] ? _raw_spin_unlock+0x24/0x40 [ 60.043397][ T6810] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.048206][ T79] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 60.060041][ T79] writeback_sb_inodes+0x515/0xdd0 [ 60.065148][ T79] ? __writeback_single_inode+0x1410/0x1410 [ 60.071057][ T79] __writeback_inodes_wb+0xc3/0x250 [ 60.076257][ T79] wb_writeback+0x910/0xd90 [ 60.080747][ T79] ? print_usage_bug+0x240/0x240 [ 60.085673][ T79] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 60.091985][ T79] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 60.097864][ T79] ? cpumask_next+0x3c/0x40 [ 60.102350][ T79] ? get_nr_dirty_inodes+0xd6/0x130 [ 60.107538][ T79] wb_workfn+0xadf/0x10d0 [ 60.111865][ T79] ? inode_wait_for_writeback+0x30/0x30 [ 60.117512][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 60.122978][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.128534][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.134506][ T79] process_one_work+0x965/0x16a0 [ 60.139441][ T79] ? lock_release+0x800/0x800 [ 60.144102][ T79] ? pwq_dec_nr_in_flight+0x310/0x310 [ 60.149477][ T79] ? rwlock_bug.part.0+0x90/0x90 [ 60.154406][ T79] worker_thread+0x96/0xe10 [ 60.158904][ T79] ? process_one_work+0x16a0/0x16a0 [ 60.164088][ T79] kthread+0x388/0x470 [ 60.168929][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.174632][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.180687][ T79] ret_from_fork+0x24/0x30 [ 60.185219][ T6810] CPU: 0 PID: 6810 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.193469][ T6810] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.199398][ T79] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:3/79 [ 60.203526][ T6810] Call Trace: [ 60.212659][ T79] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.215815][ T6810] dump_stack+0x188/0x20d [ 60.226012][ T6810] debug_smp_processor_id.cold+0x88/0x9b [ 60.231629][ T6810] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.236751][ T6810] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.242190][ T6810] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.247897][ T6810] ext4_ext_map_blocks+0x2044/0x3410 [ 60.253170][ T6810] ? ext4_ext_release+0x10/0x10 [ 60.258037][ T6810] ? __down_timeout+0x2d0/0x2d0 [ 60.262869][ T6810] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.268315][ T6810] ext4_map_blocks+0x4cb/0x1640 [ 60.273155][ T6810] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.278334][ T6810] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.283863][ T6810] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.289828][ T6810] ? prandom_u32_state+0xe/0x170 [ 60.294754][ T6810] ? __brelse+0x84/0xa0 [ 60.298894][ T6810] ? __ext4_new_inode+0x144/0x57c0 [ 60.303992][ T6810] ext4_getblk+0xad/0x520 [ 60.308330][ T6810] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.314051][ T6810] ? ext4_free_inode+0x17e0/0x17e0 [ 60.319148][ T6810] ext4_bread+0x7c/0x380 [ 60.323374][ T6810] ? ext4_getblk+0x520/0x520 [ 60.327945][ T6810] ? dqget+0xff0/0xff0 [ 60.332005][ T6810] ext4_append+0x153/0x360 [ 60.336420][ T6810] ext4_mkdir+0x5e0/0xdf0 [ 60.340739][ T6810] ? ext4_rmdir+0xde0/0xde0 [ 60.345230][ T6810] ? security_inode_permission+0xc4/0xf0 [ 60.350850][ T6810] vfs_mkdir+0x419/0x690 [ 60.355080][ T6810] do_mkdirat+0x21e/0x280 [ 60.359394][ T6810] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.364227][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.370209][ T6810] ? do_syscall_64+0x21/0x7d0 [ 60.374867][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.380833][ T6810] do_syscall_64+0xf6/0x7d0 [ 60.385323][ T6810] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.391195][ T6810] RIP: 0033:0x45bee7 [ 60.395161][ 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 [ 60.414743][ T6810] RSP: 002b:00007fff518aac98 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 60.423133][ T6810] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 60.431088][ T6810] RDX: 00007fff518aace3 RSI: 00000000000001ff RDI: 00007fff518aace0 [ 60.439040][ T6810] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 60.447001][ T6810] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 60.455105][ T6810] R13: 00007fff518aacd0 R14: 0000000000000000 R15: 00007fff518aace0 [ 60.463099][ T79] CPU: 1 PID: 79 Comm: kworker/u4:3 Not tainted 5.7.0-syzkaller #0 [ 60.470996][ T79] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.481072][ T79] Workqueue: writeback wb_workfn (flush-8:0) [ 60.487056][ T79] Call Trace: [ 60.490355][ T79] dump_stack+0x188/0x20d [ 60.494696][ T79] debug_smp_processor_id.cold+0x88/0x9b [ 60.500338][ T79] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.505462][ T79] ? __kmalloc+0x62f/0x7a0 [ 60.509902][ T79] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.515369][ T79] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.521970][ T79] ext4_ext_map_blocks+0x2044/0x3410 [ 60.527272][ T79] ? ext4_ext_release+0x10/0x10 [ 60.532148][ T79] ? __down_timeout+0x2d0/0x2d0 [ 60.537001][ T79] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.542470][ T79] ext4_map_blocks+0x4cb/0x1640 [ 60.547327][ T79] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.552527][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 60.558002][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.563561][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.569540][ T79] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.574991][ T79] ext4_writepages+0x1ab7/0x3400 [ 60.579949][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.585577][ T79] ? __lock_acquire+0x2224/0x48a0 [ 60.590616][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 60.596598][ T79] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 60.602576][ T79] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.608188][ T79] ? do_writepages+0xfa/0x2a0 [ 60.612934][ T79] do_writepages+0xfa/0x2a0 [ 60.617424][ T79] ? page_writeback_cpu_online+0x10/0x10 [ 60.623038][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 60.628482][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.634026][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.640009][ T79] ? lock_downgrade+0x840/0x840 [ 60.644862][ T79] __writeback_single_inode+0x12a/0x1410 [ 60.650479][ T79] ? _raw_spin_unlock+0x24/0x40 [ 60.655310][ T79] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 60.661272][ T79] writeback_sb_inodes+0x515/0xdd0 [ 60.666376][ T79] ? __writeback_single_inode+0x1410/0x1410 [ 60.672267][ T79] __writeback_inodes_wb+0xc3/0x250 [ 60.677472][ T79] wb_writeback+0x910/0xd90 [ 60.681961][ T79] ? print_usage_bug+0x240/0x240 [ 60.686885][ T79] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 60.693193][ T79] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 60.699095][ T79] ? cpumask_next+0x3c/0x40 [ 60.703595][ T79] ? get_nr_dirty_inodes+0xd6/0x130 [ 60.708781][ T79] wb_workfn+0xadf/0x10d0 [ 60.713114][ T79] ? inode_wait_for_writeback+0x30/0x30 [ 60.718639][ T79] ? debug_smp_processor_id+0x2f/0x185 [ 60.724082][ T79] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.729610][ T79] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.735584][ T79] process_one_work+0x965/0x16a0 [ 60.740510][ T79] ? lock_release+0x800/0x800 [ 60.745170][ T79] ? pwq_dec_nr_in_flight+0x310/0x310 [ 60.750526][ T79] ? rwlock_bug.part.0+0x90/0x90 [ 60.755454][ T79] worker_thread+0x96/0xe10 [ 60.759963][ T79] ? process_one_work+0x16a0/0x16a0 [ 60.765144][ T79] kthread+0x388/0x470 [ 60.769192][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.774899][ T79] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.780599][ T79] ret_from_fork+0x24/0x30 2020/06/13 02:57:03 building call list... [ 61.079139][ T25] tipc: TX() has been purged, node left! executing program [ 62.616288][ T6807] can: request_module (can-proto-0) failed. [ 63.183611][ T6807] can: request_module (can-proto-0) failed. [ 63.195026][ T6807] can: request_module (can-proto-0) failed.