[ 57.618368][ T6732] ? ext4_getblk+0x520/0x520 [ 57.622977][ T6732] ? dquot_get_next_dqblk+0x180/0x180 [ 57.628356][ T6732] ext4_append+0x153/0x360 [ 57.632766][ T6732] ext4_mkdir+0x5e0/0xdf0 [ 57.637080][ T6732] ? ext4_rmdir+0xde0/0xde0 [ 57.641579][ T6732] ? security_inode_permission+0xc4/0xf0 [ 57.647199][ T6732] vfs_mkdir+0x419/0x690 [ 57.651463][ T6732] do_mkdirat+0x21e/0x280 [ 57.655778][ T6732] ? __ia32_sys_mknod+0xb0/0xb0 [ 57.660966][ T6732] ? do_syscall_64+0x1c/0xe0 [ 57.665563][ T6732] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 57.671539][ T6732] do_syscall_64+0x60/0xe0 [ 57.675949][ T6732] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 57.681922][ T6732] RIP: 0033:0x7f460f240687 [ 57.686307][ T6732] Code: Bad RIP value. [ 57.690347][ T6732] RSP: 002b:00007fff8cc365f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 57.698748][ T6732] RAX: ffffffffffffffda RBX: 0000559c14101985 RCX: 00007f460f240687 [ 57.706812][ T6732] RDX: 00007fff8cc364c0 RSI: 00000000000001ed RDI: 0000559c14101985 [ 57.715147][ T6732] RBP: 00007f460f240680 R08: 0000000000000100 R09: 0000000000000000 [ 57.723284][ T6732] R10: 0000559c14101980 R11: 0000000000000246 R12: 00000000000001ed [ 57.731418][ T6732] R13: 00007fff8cc36780 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 59.910414][ T6763] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:8/6763 [ 59.919632][ T6763] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.925774][ T6763] CPU: 1 PID: 6763 Comm: kworker/u4:8 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 59.935081][ T6763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.945216][ T6763] Workqueue: writeback wb_workfn (flush-8:0) [ 59.951173][ T6763] Call Trace: [ 59.954448][ T6763] dump_stack+0x18f/0x20d [ 59.958760][ T6763] check_preemption_disabled+0x20d/0x220 [ 59.964371][ T6763] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.969467][ T6763] ? ext4_find_extent+0x81a/0xad0 [ 59.974472][ T6763] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.979909][ T6763] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.985615][ T6763] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.990884][ T6763] ? ext4_ext_release+0x10/0x10 [ 59.995740][ T6763] ? down_write_killable+0x170/0x170 [ 60.001001][ T6763] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.006439][ T6763] ext4_map_blocks+0x4cb/0x1640 [ 60.011272][ T6763] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.016468][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.021991][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.027966][ T6763] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.033404][ T6763] ext4_writepages+0x1a83/0x33c0 [ 60.038872][ T6763] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.044496][ T6763] ? __lock_acquire+0x2224/0x48b0 [ 60.049536][ T6763] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 60.055591][ T6763] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 60.061557][ T6763] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.067177][ T6763] ? do_writepages+0xf3/0x2a0 [ 60.071841][ T6763] do_writepages+0xf3/0x2a0 [ 60.076510][ T6763] ? page_writeback_cpu_online+0x10/0x10 [ 60.082122][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.087902][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.093861][ T6763] ? lock_downgrade+0x840/0x840 [ 60.099300][ T6763] __writeback_single_inode+0x12a/0x13d0 [ 60.105471][ T6763] ? _raw_spin_unlock+0x24/0x40 [ 60.110694][ T6763] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 60.116696][ T6763] writeback_sb_inodes+0x515/0xdc0 [ 60.121800][ T6763] ? __writeback_single_inode+0x13d0/0x13d0 [ 60.127684][ T6763] __writeback_inodes_wb+0xc3/0x250 [ 60.132879][ T6763] wb_writeback+0x8c8/0xd40 [ 60.137380][ T6763] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 60.143717][ T6763] ? cpumask_next+0x3c/0x40 [ 60.148304][ T6763] ? get_nr_dirty_inodes+0xd6/0x130 [ 60.153679][ T6763] wb_workfn+0xab3/0x1090 [ 60.158040][ T6763] ? inode_wait_for_writeback+0x30/0x30 [ 60.163750][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.169934][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.175982][ T6763] process_one_work+0x965/0x1690 [ 60.180941][ T6763] ? lock_release+0x800/0x800 [ 60.185865][ T6763] ? pwq_dec_nr_in_flight+0x310/0x310 [ 60.192190][ T6763] ? rwlock_bug.part.0+0x90/0x90 [ 60.197223][ T6763] worker_thread+0x96/0xe10 [ 60.201960][ T6763] ? process_one_work+0x1690/0x1690 [ 60.207509][ T6763] kthread+0x3b5/0x4a0 [ 60.211563][ T6763] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.217347][ T6763] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.223045][ T6763] ret_from_fork+0x1f/0x30 [ 60.230888][ T6763] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:8/6763 [ 60.241009][ T6763] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.246912][ T6763] CPU: 1 PID: 6763 Comm: kworker/u4:8 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 60.256191][ T6763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.266766][ T6763] Workqueue: writeback wb_workfn (flush-8:0) [ 60.272744][ T6763] Call Trace: [ 60.276032][ T6763] dump_stack+0x18f/0x20d [ 60.280362][ T6763] check_preemption_disabled+0x20d/0x220 [ 60.285973][ T6763] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.291060][ T6763] ? ext4_find_extent+0x81a/0xad0 [ 60.296081][ T6763] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.301516][ T6763] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.307932][ T6763] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.313322][ T6763] ? ext4_ext_release+0x10/0x10 [ 60.318186][ T6763] ? down_write_killable+0x170/0x170 [ 60.323720][ T6763] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.333618][ T6763] ext4_map_blocks+0x4cb/0x1640 [ 60.338526][ T6763] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.343723][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.349272][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.357082][ T6763] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.362523][ T6763] ext4_writepages+0x1a83/0x33c0 [ 60.367462][ T6763] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.373084][ T6763] ? __lock_acquire+0x2224/0x48b0 [ 60.378119][ T6763] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 60.384081][ T6763] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 60.390065][ T6763] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.395683][ T6763] ? do_writepages+0xf3/0x2a0 [ 60.400628][ T6763] do_writepages+0xf3/0x2a0 [ 60.405983][ T6763] ? page_writeback_cpu_online+0x10/0x10 [ 60.412711][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.418343][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.424310][ T6763] ? lock_downgrade+0x840/0x840 [ 60.429144][ T6763] __writeback_single_inode+0x12a/0x13d0 [ 60.434769][ T6763] ? _raw_spin_unlock+0x24/0x40 [ 60.439597][ T6763] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 60.445577][ T6763] writeback_sb_inodes+0x515/0xdc0 [ 60.450676][ T6763] ? __writeback_single_inode+0x13d0/0x13d0 [ 60.456590][ T6763] __writeback_inodes_wb+0xc3/0x250 [ 60.461787][ T6763] wb_writeback+0x8c8/0xd40 [ 60.466298][ T6763] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 60.472616][ T6763] ? cpumask_next+0x3c/0x40 [ 60.477101][ T6763] ? get_nr_dirty_inodes+0xd6/0x130 [ 60.482307][ T6763] wb_workfn+0x9bc/0x1090 [ 60.486630][ T6763] ? inode_wait_for_writeback+0x30/0x30 [ 60.492177][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.497717][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.503698][ T6763] process_one_work+0x965/0x1690 [ 60.508644][ T6763] ? lock_release+0x800/0x800 [ 60.513300][ T6763] ? pwq_dec_nr_in_flight+0x310/0x310 [ 60.518651][ T6763] ? rwlock_bug.part.0+0x90/0x90 [ 60.523590][ T6763] worker_thread+0x96/0xe10 [ 60.530530][ T6763] ? process_one_work+0x1690/0x1690 [ 60.535721][ T6763] kthread+0x3b5/0x4a0 [ 60.539770][ T6763] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.546439][ T6763] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.552411][ T6763] ret_from_fork+0x1f/0x30 [ 60.560483][ T6763] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:8/6763 [ 60.570117][ T6763] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.576108][ T6763] CPU: 1 PID: 6763 Comm: kworker/u4:8 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 60.585379][ T6763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.595437][ T6763] Workqueue: writeback wb_workfn (flush-8:0) [ 60.601412][ T6763] Call Trace: [ 60.604793][ T6763] dump_stack+0x18f/0x20d [ 60.609191][ T6763] check_preemption_disabled+0x20d/0x220 [ 60.615035][ T6763] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.620395][ T6763] ? ext4_find_extent+0x81a/0xad0 [ 60.625422][ T6763] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.630877][ T6763] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.636771][ T6763] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.642058][ T6763] ? ext4_ext_release+0x10/0x10 [ 60.646908][ T6763] ? down_write_killable+0x170/0x170 [ 60.652176][ T6763] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.657620][ T6763] ext4_map_blocks+0x4cb/0x1640 [ 60.662460][ T6763] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.667643][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.673171][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.679132][ T6763] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.684573][ T6763] ext4_writepages+0x1a83/0x33c0 [ 60.689771][ T6763] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.695490][ T6763] ? __lock_acquire+0x2224/0x48b0 [ 60.700517][ T6763] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 60.706483][ T6763] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 60.712445][ T6763] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.718054][ T6763] ? do_writepages+0xf3/0x2a0 [ 60.722706][ T6763] do_writepages+0xf3/0x2a0 [ 60.727201][ T6763] ? page_writeback_cpu_online+0x10/0x10 [ 60.732815][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.738339][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.744402][ T6763] ? lock_downgrade+0x840/0x840 [ 60.749261][ T6763] __writeback_single_inode+0x12a/0x13d0 [ 60.754874][ T6763] ? _raw_spin_unlock+0x24/0x40 [ 60.759734][ T6763] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 60.765716][ T6763] writeback_sb_inodes+0x515/0xdc0 [ 60.770843][ T6763] ? __writeback_single_inode+0x13d0/0x13d0 [ 60.776736][ T6763] __writeback_inodes_wb+0xc3/0x250 [ 60.781927][ T6763] wb_writeback+0x8c8/0xd40 [ 60.786421][ T6763] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 60.792939][ T6763] ? cpumask_next+0x3c/0x40 [ 60.797451][ T6763] ? get_nr_dirty_inodes+0xd6/0x130 [ 60.802652][ T6763] wb_workfn+0x9bc/0x1090 [ 60.806979][ T6763] ? inode_wait_for_writeback+0x30/0x30 [ 60.812518][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.818068][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.824291][ T6763] process_one_work+0x965/0x1690 [ 60.829234][ T6763] ? lock_release+0x800/0x800 [ 60.834142][ T6763] ? pwq_dec_nr_in_flight+0x310/0x310 [ 60.839676][ T6763] ? rwlock_bug.part.0+0x90/0x90 [ 60.844636][ T6763] worker_thread+0x96/0xe10 [ 60.849131][ T6763] ? process_one_work+0x1690/0x1690 [ 60.854310][ T6763] kthread+0x3b5/0x4a0 [ 60.858356][ T6763] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.864055][ T6763] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.869753][ T6763] ret_from_fork+0x1f/0x30 [ 60.876062][ T6763] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:8/6763 [ 60.886519][ T6763] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.893660][ T6763] CPU: 1 PID: 6763 Comm: kworker/u4:8 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 60.902942][ T6763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.913064][ T6763] Workqueue: writeback wb_workfn (flush-8:0) [ 60.919140][ T6763] Call Trace: [ 60.922421][ T6763] dump_stack+0x18f/0x20d [ 60.926752][ T6763] check_preemption_disabled+0x20d/0x220 [ 60.932402][ T6763] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.937593][ T6763] ? ext4_find_extent+0x81a/0xad0 [ 60.942603][ T6763] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.948053][ T6763] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.953774][ T6763] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.959160][ T6763] ? ext4_ext_release+0x10/0x10 [ 60.964021][ T6763] ? down_write_killable+0x170/0x170 [ 60.969390][ T6763] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.974836][ T6763] ext4_map_blocks+0x4cb/0x1640 [ 60.979677][ T6763] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.984858][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.990393][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.996439][ T6763] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.001879][ T6763] ext4_writepages+0x1a83/0x33c0 [ 61.006817][ T6763] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.012446][ T6763] ? __lock_acquire+0x2224/0x48b0 [ 61.017752][ T6763] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 61.023732][ T6763] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 61.029792][ T6763] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.035413][ T6763] ? do_writepages+0xf3/0x2a0 [ 61.040077][ T6763] do_writepages+0xf3/0x2a0 [ 61.044655][ T6763] ? page_writeback_cpu_online+0x10/0x10 [ 61.050292][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.055866][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.062100][ T6763] ? lock_downgrade+0x840/0x840 [ 61.067033][ T6763] __writeback_single_inode+0x12a/0x13d0 [ 61.072665][ T6763] ? _raw_spin_unlock+0x24/0x40 [ 61.077493][ T6763] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 61.083462][ T6763] writeback_sb_inodes+0x515/0xdc0 [ 61.088577][ T6763] ? __writeback_single_inode+0x13d0/0x13d0 [ 61.094469][ T6763] __writeback_inodes_wb+0xc3/0x250 [ 61.099671][ T6763] wb_writeback+0x8c8/0xd40 [ 61.104178][ T6763] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 61.110589][ T6763] ? cpumask_next+0x3c/0x40 [ 61.115292][ T6763] ? get_nr_dirty_inodes+0xd6/0x130 [ 61.120484][ T6763] wb_workfn+0x9bc/0x1090 [ 61.124816][ T6763] ? inode_wait_for_writeback+0x30/0x30 [ 61.130972][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.136739][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.143710][ T6763] process_one_work+0x965/0x1690 [ 61.148735][ T6763] ? lock_release+0x800/0x800 [ 61.153660][ T6763] ? pwq_dec_nr_in_flight+0x310/0x310 [ 61.159158][ T6763] ? rwlock_bug.part.0+0x90/0x90 [ 61.164094][ T6763] worker_thread+0x96/0xe10 [ 61.168596][ T6763] ? process_one_work+0x1690/0x1690 [ 61.177635][ T6763] kthread+0x3b5/0x4a0 [ 61.181726][ T6763] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.188033][ T6763] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.193863][ T6763] ret_from_fork+0x1f/0x30 [ 61.201047][ T6763] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:8/6763 [ 61.210625][ T6763] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.216625][ T6763] CPU: 1 PID: 6763 Comm: kworker/u4:8 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 61.225985][ T6763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.236047][ T6763] Workqueue: writeback wb_workfn (flush-8:0) [ 61.242026][ T6763] Call Trace: [ 61.245459][ T6763] dump_stack+0x18f/0x20d [ 61.249785][ T6763] check_preemption_disabled+0x20d/0x220 [ 61.255407][ T6763] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.260518][ T6763] ? ext4_find_extent+0x81a/0xad0 [ 61.265802][ T6763] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.271262][ T6763] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.276982][ T6763] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.282697][ T6763] ? ext4_ext_release+0x10/0x10 [ 61.287657][ T6763] ? down_write_killable+0x170/0x170 [ 61.292924][ T6763] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.298365][ T6763] ext4_map_blocks+0x4cb/0x1640 [ 61.303923][ T6763] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.309412][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.315132][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.321093][ T6763] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.326539][ T6763] ext4_writepages+0x1a83/0x33c0 [ 61.331476][ T6763] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.337104][ T6763] ? __lock_acquire+0x2224/0x48b0 [ 61.342116][ T6763] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 61.348158][ T6763] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 61.354115][ T6763] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.359768][ T6763] ? do_writepages+0xf3/0x2a0 [ 61.364434][ T6763] do_writepages+0xf3/0x2a0 [ 61.368937][ T6763] ? page_writeback_cpu_online+0x10/0x10 [ 61.375535][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.381342][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.387461][ T6763] ? lock_downgrade+0x840/0x840 [ 61.392312][ T6763] __writeback_single_inode+0x12a/0x13d0 [ 61.397931][ T6763] ? _raw_spin_unlock+0x24/0x40 [ 61.402766][ T6763] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 61.408816][ T6763] writeback_sb_inodes+0x515/0xdc0 [ 61.414046][ T6763] ? __writeback_single_inode+0x13d0/0x13d0 [ 61.419939][ T6763] __writeback_inodes_wb+0xc3/0x250 [ 61.425146][ T6763] wb_writeback+0x8c8/0xd40 [ 61.429636][ T6763] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 61.435979][ T6763] ? cpumask_next+0x3c/0x40 [ 61.441178][ T6763] ? get_nr_dirty_inodes+0xd6/0x130 [ 61.446384][ T6763] wb_workfn+0x9bc/0x1090 [ 61.450743][ T6763] ? inode_wait_for_writeback+0x30/0x30 [ 61.456304][ T6763] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.462731][ T6763] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.468872][ T6763] process_one_work+0x965/0x1690 [ 61.473890][ T6763] ? lock_release+0x800/0x800 [ 61.478892][ T6763] ? pwq_dec_nr_in_flight+0x310/0x310 [ 61.484333][ T6763] ? rwlock_bug.part.0+0x90/0x90 [ 61.489252][ T6763] worker_thread+0x96/0xe10 [ 61.493759][ T6763] ? process_one_work+0x1690/0x1690 [ 61.498973][ T6763] kthread+0x3b5/0x4a0 [ 61.503221][ T6763] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.508936][ T6763] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.516300][ T6763] ret_from_fork+0x1f/0x30 Warning: Permanently added '10.128.0.87' (ECDSA) to the list of known hosts. 2020/06/08 13:49:28 fuzzer started 2020/06/08 13:49:28 connecting to host at 10.128.0.26:43849 2020/06/08 13:49:28 checking machine... 2020/06/08 13:49:28 checking revisions... 2020/06/08 13:49:28 testing simple program... [ 63.365897][ T6804] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6804 [ 63.375513][ T6804] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 63.381871][ T6804] CPU: 0 PID: 6804 Comm: syz-fuzzer Not tainted 5.7.0-next-20200608-syzkaller #0 [ 63.391282][ T6804] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.402019][ T6804] Call Trace: [ 63.405321][ T6804] dump_stack+0x18f/0x20d [ 63.409661][ T6804] check_preemption_disabled+0x20d/0x220 [ 63.415296][ T6804] ext4_mb_new_blocks+0xa4d/0x3b70 [ 63.420535][ T6804] ? ext4_ext_search_right+0x2ca/0xb20 [ 63.426232][ T6804] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 63.431962][ T6804] ext4_ext_map_blocks+0x201b/0x33e0 [ 63.437545][ T6804] ? ext4_ext_release+0x10/0x10 [ 63.442590][ T6804] ? down_write_killable+0x170/0x170 [ 63.447859][ T6804] ? ext4_es_lookup_extent+0x41d/0xd10 [ 63.453321][ T6804] ext4_map_blocks+0x4cb/0x1640 [ 63.458202][ T6804] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 63.463406][ T6804] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 63.469030][ T6804] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 63.475028][ T6804] ? prandom_u32_state+0xe/0x170 [ 63.480022][ T6804] ? __brelse+0x84/0xa0 [ 63.484174][ T6804] ? __ext4_new_inode+0x144/0x55e0 [ 63.489369][ T6804] ext4_getblk+0xad/0x520 [ 63.493689][ T6804] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 63.499395][ T6804] ? ext4_free_inode+0x1700/0x1700 [ 63.504491][ T6804] ext4_bread+0x7c/0x380 [ 63.508709][ T6804] ? ext4_getblk+0x520/0x520 [ 63.513379][ T6804] ? dquot_get_next_dqblk+0x180/0x180 [ 63.518739][ T6804] ext4_append+0x153/0x360 [ 63.523153][ T6804] ext4_mkdir+0x5e0/0xdf0 [ 63.527558][ T6804] ? ext4_rmdir+0xde0/0xde0 [ 63.532046][ T6804] ? security_inode_permission+0xc4/0xf0 [ 63.538007][ T6804] vfs_mkdir+0x419/0x690 [ 63.542529][ T6804] do_mkdirat+0x21e/0x280 [ 63.546846][ T6804] ? __ia32_sys_mknod+0xb0/0xb0 [ 63.551684][ T6804] ? do_syscall_64+0x1c/0xe0 [ 63.556305][ T6804] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.562495][ T6804] do_syscall_64+0x60/0xe0 [ 63.566903][ T6804] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 63.572802][ T6804] RIP: 0033:0x4b02a0 [ 63.576780][ T6804] Code: Bad RIP value. [ 63.580838][ T6804] RSP: 002b:000000c0000e14b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 63.589433][ T6804] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 63.597401][ T6804] RDX: 00000000000001c0 RSI: 000000c00009cc60 RDI: ffffffffffffff9c [ 63.605388][ T6804] RBP: 000000c0000e1510 R08: 0000000000000000 R09: 0000000000000000 [ 63.613395][ T6804] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 63.621404][ T6804] R13: 0000000000000064 R14: 0000000000000063 R15: 0000000000000100 [ 63.647337][ T6820] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6820 [ 63.657149][ T6820] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 63.663750][ T6820] CPU: 1 PID: 6820 Comm: syz-executor.0 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 63.673298][ T6820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.683447][ T6820] Call Trace: [ 63.686729][ T6820] dump_stack+0x18f/0x20d [ 63.691044][ T6820] check_preemption_disabled+0x20d/0x220 [ 63.696759][ T6820] ext4_mb_new_blocks+0xa4d/0x3b70 [ 63.701868][ T6820] ? ext4_ext_search_right+0x2ca/0xb20 [ 63.707311][ T6820] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 63.713023][ T6820] ext4_ext_map_blocks+0x201b/0x33e0 [ 63.718290][ T6820] ? ext4_ext_release+0x10/0x10 [ 63.723144][ T6820] ? down_write_killable+0x170/0x170 [ 63.728493][ T6820] ? ext4_es_lookup_extent+0x41d/0xd10 [ 63.733935][ T6820] ext4_map_blocks+0x4cb/0x1640 [ 63.738780][ T6820] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 63.743960][ T6820] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 63.749494][ T6820] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 63.755475][ T6820] ? prandom_u32_state+0xe/0x170 [ 63.760400][ T6820] ? __brelse+0x84/0xa0 [ 63.773464][ T6820] ? __ext4_new_inode+0x144/0x55e0 [ 63.778565][ T6820] ext4_getblk+0xad/0x520 [ 63.782885][ T6820] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 63.788585][ T6820] ? ext4_free_inode+0x1700/0x1700 [ 63.793677][ T6820] ext4_bread+0x7c/0x380 [ 63.797914][ T6820] ? ext4_getblk+0x520/0x520 [ 63.802499][ T6820] ? dquot_get_next_dqblk+0x180/0x180 [ 63.807877][ T6820] ext4_append+0x153/0x360 [ 63.812391][ T6820] ext4_mkdir+0x5e0/0xdf0 [ 63.816704][ T6820] ? ext4_rmdir+0xde0/0xde0 [ 63.821210][ T6820] ? security_inode_permission+0xc4/0xf0 [ 63.826846][ T6820] vfs_mkdir+0x419/0x690 [ 63.831173][ T6820] do_mkdirat+0x21e/0x280 [ 63.835490][ T6820] ? __ia32_sys_mknod+0xb0/0xb0 [ 63.840437][ T6820] ? do_syscall_64+0x1c/0xe0 [ 63.845560][ T6820] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.851546][ T6820] do_syscall_64+0x60/0xe0 [ 63.855948][ T6820] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 63.862348][ T6820] RIP: 0033:0x45bee7 [ 63.866238][ T6820] Code: Bad RIP value. [ 63.870329][ T6820] RSP: 002b:00007ffe81da1f88 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 63.878729][ T6820] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 63.886796][ T6820] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffe81da2160 [ 63.894750][ T6820] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002cc0 [ 63.902707][ T6820] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 63.910662][ T6820] R13: 00007ffe81da2160 R14: 8421084210842109 R15: 00007ffe81da216c [ 63.997352][ T6821] IPVS: ftp: loaded support on port[0] = 21 [ 64.034305][ T6821] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6821 [ 64.044207][ T6821] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 64.050196][ T6821] CPU: 0 PID: 6821 Comm: syz-executor.0 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 64.059646][ T6821] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.069708][ T6821] Call Trace: [ 64.073012][ T6821] dump_stack+0x18f/0x20d [ 64.077330][ T6821] check_preemption_disabled+0x20d/0x220 [ 64.082962][ T6821] ext4_mb_new_blocks+0xa4d/0x3b70 [ 64.088096][ T6821] ? ext4_ext_search_right+0x2ca/0xb20 [ 64.093577][ T6821] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 64.099300][ T6821] ext4_ext_map_blocks+0x201b/0x33e0 [ 64.104657][ T6821] ? ext4_ext_release+0x10/0x10 [ 64.109676][ T6821] ? down_write_killable+0x170/0x170 [ 64.114961][ T6821] ? ext4_es_lookup_extent+0x41d/0xd10 [ 64.120426][ T6821] ext4_map_blocks+0x4cb/0x1640 [ 64.125299][ T6821] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 64.130505][ T6821] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 64.136218][ T6821] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 64.142204][ T6821] ? prandom_u32_state+0xe/0x170 [ 64.147136][ T6821] ? __brelse+0x84/0xa0 [ 64.151308][ T6821] ? __ext4_new_inode+0x144/0x55e0 [ 64.156408][ T6821] ext4_getblk+0xad/0x520 [ 64.160826][ T6821] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 64.166644][ T6821] ? ext4_free_inode+0x1700/0x1700 [ 64.171934][ T6821] ext4_bread+0x7c/0x380 [ 64.176182][ T6821] ? ext4_getblk+0x520/0x520 [ 64.180807][ T6821] ? dquot_get_next_dqblk+0x180/0x180 [ 64.186273][ T6821] ext4_append+0x153/0x360 [ 64.190685][ T6821] ext4_mkdir+0x5e0/0xdf0 [ 64.195002][ T6821] ? ext4_rmdir+0xde0/0xde0 [ 64.199618][ T6821] ? security_inode_permission+0xc4/0xf0 [ 64.205270][ T6821] vfs_mkdir+0x419/0x690 [ 64.209534][ T6821] do_mkdirat+0x21e/0x280 [ 64.213856][ T6821] ? __ia32_sys_mknod+0xb0/0xb0 [ 64.218828][ T6821] ? do_syscall_64+0x1c/0xe0 [ 64.223401][ T6821] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 64.229366][ T6821] do_syscall_64+0x60/0xe0 [ 64.233765][ T6821] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 64.239732][ T6821] RIP: 0033:0x45bee7 [ 64.243600][ T6821] Code: Bad RIP value. [ 64.247730][ T6821] RSP: 002b:00007ffe81da1e78 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 64.256142][ T6821] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 64.264096][ T6821] RDX: 00007ffe81da1ec3 RSI: 00000000000001ff RDI: 00007ffe81da1ec0 [ 64.272054][ T6821] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 64.280252][ T6821] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 64.289529][ T6821] R13: 00007ffe81da1eb0 R14: 0000000000000000 R15: 00007ffe81da1ec0 [ 64.327978][ T1156] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1156 [ 64.337569][ T1156] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 64.343586][ T1156] CPU: 1 PID: 1156 Comm: khugepaged Not tainted 5.7.0-next-20200608-syzkaller #0 [ 64.352796][ T1156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.363814][ T1156] Call Trace: [ 64.367119][ T1156] dump_stack+0x18f/0x20d [ 64.371465][ T1156] check_preemption_disabled+0x20d/0x220 [ 64.377111][ T1156] ext4_mb_new_blocks+0xa4d/0x3b70 [ 64.382232][ T1156] ? ext4_find_extent+0x81a/0xad0 [ 64.387271][ T1156] ? ext4_ext_search_right+0x2ca/0xb20 [ 64.392741][ T1156] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 64.398501][ T1156] ext4_ext_map_blocks+0x201b/0x33e0 [ 64.403982][ T1156] ? ext4_ext_release+0x10/0x10 [ 64.408859][ T1156] ? down_write_killable+0x170/0x170 [ 64.414156][ T1156] ? ext4_es_lookup_extent+0x41d/0xd10 [ 64.419617][ T1156] ext4_map_blocks+0x4cb/0x1640 [ 64.424457][ T1156] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 64.430430][ T1156] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 64.436073][ T1156] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 64.442151][ T1156] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 64.447694][ T1156] ext4_writepages+0x1a83/0x33c0 [ 64.452647][ T1156] ? __ext4_mark_inode_dirty+0x940/0x940 [ 64.458292][ T1156] ? __lock_acquire+0x2224/0x48b0 [ 64.463415][ T1156] ? __ext4_mark_inode_dirty+0x940/0x940 [ 64.469120][ T1156] ? do_writepages+0xf3/0x2a0 [ 64.473780][ T1156] do_writepages+0xf3/0x2a0 [ 64.478372][ T1156] ? page_writeback_cpu_online+0x10/0x10 [ 64.484000][ T1156] ? do_raw_spin_lock+0x120/0x2d0 [ 64.489017][ T1156] ? do_raw_spin_unlock+0x171/0x260 [ 64.494203][ T1156] ? _raw_spin_unlock+0x24/0x40 [ 64.499049][ T1156] __filemap_fdatawrite_range+0x2aa/0x390 [ 64.504932][ T1156] ? collapse_file+0x35a2/0x4330 [ 64.509851][ T1156] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 64.515920][ T1156] ? _raw_spin_unlock_irq+0x1f/0x80 [ 64.521210][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 64.527237][ T1156] collapse_file+0x35ac/0x4330 [ 64.532300][ T1156] ? collapse_huge_page+0x4350/0x4350 [ 64.537665][ T1156] ? khugepaged+0x2506/0x3fc0 [ 64.542336][ T1156] ? xas_find+0x31a/0x880 [ 64.546667][ T1156] ? check_preemption_disabled+0x38/0x220 [ 64.552394][ T1156] khugepaged+0x3041/0x3fc0 [ 64.557166][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 64.562795][ T1156] ? lock_downgrade+0x840/0x840 [ 64.568103][ T1156] ? finish_wait+0x260/0x260 [ 64.573644][ T1156] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 64.579748][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 64.585821][ T1156] ? __kthread_parkme+0x13f/0x1e0 [ 64.590938][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 64.596726][ T1156] kthread+0x3b5/0x4a0 [ 64.600782][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 64.606491][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 64.612207][ T1156] ret_from_fork+0x1f/0x30 [ 64.636965][ T6821] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6821 [ 64.646674][ T6821] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 64.653058][ T6821] CPU: 0 PID: 6821 Comm: syz-executor.0 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 64.662709][ T6821] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.673593][ T6821] Call Trace: [ 64.677425][ T6821] dump_stack+0x18f/0x20d [ 64.681774][ T6821] check_preemption_disabled+0x20d/0x220 [ 64.687460][ T6821] ext4_mb_new_blocks+0xa4d/0x3b70 [ 64.692583][ T6821] ? ext4_ext_search_right+0x2ca/0xb20 [ 64.697824][ T1156] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1156 [ 64.698591][ T6821] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 64.698611][ T6821] ext4_ext_map_blocks+0x201b/0x33e0 [ 64.698632][ T6821] ? ext4_ext_release+0x10/0x10 [ 64.698668][ T6821] ? down_write_killable+0x170/0x170 [ 64.708063][ T1156] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 64.713588][ T6821] ? ext4_es_lookup_extent+0x41d/0xd10 [ 64.713612][ T6821] ext4_map_blocks+0x4cb/0x1640 [ 64.713635][ T6821] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 64.713650][ T6821] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 64.713667][ T6821] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 64.713682][ T6821] ? prandom_u32_state+0xe/0x170 [ 64.713701][ T6821] ? __brelse+0x84/0xa0 [ 64.713717][ T6821] ? __ext4_new_inode+0x144/0x55e0 [ 64.713743][ T6821] ext4_getblk+0xad/0x520 [ 64.783663][ T6821] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 64.789384][ T6821] ? ext4_free_inode+0x1700/0x1700 [ 64.794497][ T6821] ext4_bread+0x7c/0x380 [ 64.798991][ T6821] ? ext4_getblk+0x520/0x520 [ 64.803571][ T6821] ? dquot_get_next_dqblk+0x180/0x180 [ 64.809116][ T6821] ext4_append+0x153/0x360 [ 64.813535][ T6821] ext4_mkdir+0x5e0/0xdf0 [ 64.817858][ T6821] ? ext4_rmdir+0xde0/0xde0 [ 64.822360][ T6821] ? security_inode_permission+0xc4/0xf0 [ 64.828163][ T6821] vfs_mkdir+0x419/0x690 [ 64.832398][ T6821] do_mkdirat+0x21e/0x280 [ 64.836725][ T6821] ? __ia32_sys_mknod+0xb0/0xb0 [ 64.841574][ T6821] ? do_syscall_64+0x1c/0xe0 [ 64.846325][ T6821] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 64.852394][ T6821] do_syscall_64+0x60/0xe0 [ 64.856812][ T6821] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 64.863316][ T6821] RIP: 0033:0x45bee7 [ 64.867885][ T6821] Code: Bad RIP value. [ 64.872049][ T6821] RSP: 002b:00007ffe81da1e78 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 64.880451][ T6821] RAX: ffffffffffffffda RBX: 000000000000fb4a RCX: 000000000045bee7 [ 64.888432][ T6821] RDX: 00007ffe81da1ec3 RSI: 00000000000001ff RDI: 00007ffe81da1ec0 [ 64.896400][ T6821] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 64.905644][ T6821] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 64.914130][ T6821] R13: 00007ffe81da1eb0 R14: 000000000000fb36 R15: 00007ffe81da1ec0 [ 64.922212][ T1156] CPU: 1 PID: 1156 Comm: khugepaged Not tainted 5.7.0-next-20200608-syzkaller #0 [ 64.931688][ T1156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.941760][ T1156] Call Trace: [ 64.945194][ T1156] dump_stack+0x18f/0x20d [ 64.949546][ T1156] check_preemption_disabled+0x20d/0x220 [ 64.959265][ T1156] ext4_mb_new_blocks+0xa4d/0x3b70 [ 64.964388][ T1156] ? ext4_ext_search_right+0x2ca/0xb20 [ 64.969849][ T1156] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 64.976076][ T1156] ext4_ext_map_blocks+0x201b/0x33e0 [ 64.981353][ T1156] ? ext4_ext_release+0x10/0x10 [ 64.986297][ T1156] ? down_write_killable+0x170/0x170 [ 64.991577][ T1156] ? ext4_es_lookup_extent+0x41d/0xd10 [ 64.997156][ T1156] ext4_map_blocks+0x4cb/0x1640 [ 65.002109][ T1156] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 65.007322][ T1156] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 65.012865][ T1156] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 65.018846][ T1156] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 65.024306][ T1156] ext4_writepages+0x1a83/0x33c0 [ 65.029243][ T1156] ? __ext4_mark_inode_dirty+0x940/0x940 [ 65.034868][ T1156] ? __lock_acquire+0x2224/0x48b0 [ 65.042239][ T1156] ? __ext4_mark_inode_dirty+0x940/0x940 [ 65.047859][ T1156] ? do_writepages+0xf3/0x2a0 [ 65.052516][ T1156] do_writepages+0xf3/0x2a0 [ 65.057004][ T1156] ? page_writeback_cpu_online+0x10/0x10 [ 65.062628][ T1156] ? do_raw_spin_lock+0x120/0x2d0 [ 65.067643][ T1156] ? do_raw_spin_unlock+0x171/0x260 [ 65.072823][ T1156] ? _raw_spin_unlock+0x24/0x40 [ 65.077655][ T1156] __filemap_fdatawrite_range+0x2aa/0x390 [ 65.083974][ T1156] ? collapse_file+0x35a2/0x4330 [ 65.088914][ T1156] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 65.094967][ T1156] ? _raw_spin_unlock_irq+0x1f/0x80 [ 65.100263][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 65.106226][ T1156] collapse_file+0x35ac/0x4330 [ 65.110988][ T1156] ? collapse_huge_page+0x4350/0x4350 [ 65.116350][ T1156] ? khugepaged+0x2506/0x3fc0 [ 65.121023][ T1156] ? xas_find+0x31a/0x880 [ 65.125438][ T1156] ? check_preemption_disabled+0x38/0x220 [ 65.131142][ T1156] khugepaged+0x3041/0x3fc0 [ 65.135656][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 65.141271][ T1156] ? lock_downgrade+0x840/0x840 [ 65.146118][ T1156] ? finish_wait+0x260/0x260 [ 65.150705][ T1156] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 65.156491][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 65.162461][ T1156] ? __kthread_parkme+0x13f/0x1e0 [ 65.167464][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 65.173086][ T1156] kthread+0x3b5/0x4a0 [ 65.177150][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 65.182849][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 65.188670][ T1156] ret_from_fork+0x1f/0x30 [ 65.238234][ T1156] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1156 [ 65.247593][ T1156] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 65.253723][ T1156] CPU: 1 PID: 1156 Comm: khugepaged Not tainted 5.7.0-next-20200608-syzkaller #0 [ 65.263266][ T1156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.274890][ T1156] Call Trace: [ 65.278195][ T1156] dump_stack+0x18f/0x20d [ 65.282536][ T1156] check_preemption_disabled+0x20d/0x220 2020/06/08 13:49:30 building call list... [ 65.288216][ T1156] ext4_mb_new_blocks+0xa4d/0x3b70 [ 65.293353][ T1156] ? ext4_ext_search_right+0x2ca/0xb20 [ 65.298845][ T1156] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 65.305098][ T1156] ext4_ext_map_blocks+0x201b/0x33e0 [ 65.310506][ T1156] ? ext4_ext_release+0x10/0x10 [ 65.315386][ T1156] ? down_write_killable+0x170/0x170 [ 65.320807][ T1156] ? ext4_es_lookup_extent+0x41d/0xd10 [ 65.326281][ T1156] ext4_map_blocks+0x4cb/0x1640 [ 65.331141][ T1156] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 65.336345][ T1156] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 65.341897][ T1156] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 65.347895][ T1156] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 65.353367][ T1156] ext4_writepages+0x1a83/0x33c0 [ 65.358323][ T1156] ? __ext4_mark_inode_dirty+0x940/0x940 [ 65.363947][ T1156] ? __lock_acquire+0x2224/0x48b0 [ 65.368994][ T1156] ? __ext4_mark_inode_dirty+0x940/0x940 [ 65.374622][ T1156] ? do_writepages+0xf3/0x2a0 [ 65.379308][ T1156] do_writepages+0xf3/0x2a0 [ 65.383836][ T1156] ? page_writeback_cpu_online+0x10/0x10 [ 65.389582][ T1156] ? do_raw_spin_lock+0x120/0x2d0 [ 65.394607][ T1156] ? do_raw_spin_unlock+0x171/0x260 [ 65.399811][ T1156] ? _raw_spin_unlock+0x24/0x40 [ 65.404749][ T1156] __filemap_fdatawrite_range+0x2aa/0x390 [ 65.410486][ T1156] ? collapse_file+0x35a2/0x4330 [ 65.415527][ T1156] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 65.421609][ T1156] ? _raw_spin_unlock_irq+0x1f/0x80 [ 65.426809][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 65.432799][ T1156] collapse_file+0x35ac/0x4330 [ 65.438034][ T1156] ? collapse_huge_page+0x4350/0x4350 [ 65.443411][ T1156] ? khugepaged+0x2506/0x3fc0 [ 65.448112][ T1156] ? xas_find+0x31a/0x880 [ 65.452445][ T1156] ? check_preemption_disabled+0x38/0x220 [ 65.458198][ T1156] khugepaged+0x3041/0x3fc0 [ 65.462735][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 65.468376][ T1156] ? lock_downgrade+0x840/0x840 [ 65.473251][ T1156] ? finish_wait+0x260/0x260 [ 65.477942][ T1156] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 65.483779][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 65.489858][ T1156] ? __kthread_parkme+0x13f/0x1e0 [ 65.494900][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 65.500630][ T1156] kthread+0x3b5/0x4a0 [ 65.504700][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 65.510416][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 65.516147][ T1156] ret_from_fork+0x1f/0x30 [ 65.718678][ T6763] tipc: TX() has been purged, node left! executing program [ 66.548275][ T244] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/244 [ 66.558781][ T244] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.564776][ T244] CPU: 0 PID: 244 Comm: kworker/u4:5 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 66.574168][ T244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.585738][ T244] Workqueue: writeback wb_workfn (flush-8:0) [ 66.591815][ T244] Call Trace: [ 66.595349][ T244] dump_stack+0x18f/0x20d [ 66.599708][ T244] check_preemption_disabled+0x20d/0x220 [ 66.605546][ T244] ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.610841][ T244] ? ext4_find_extent+0x81a/0xad0 [ 66.616932][ T244] ? ext4_ext_search_right+0x2ca/0xb20 [ 66.623625][ T244] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 66.629647][ T244] ext4_ext_map_blocks+0x201b/0x33e0 [ 66.635593][ T244] ? ext4_ext_release+0x10/0x10 [ 66.641243][ T244] ? down_write_killable+0x170/0x170 [ 66.646533][ T244] ? ext4_es_lookup_extent+0x41d/0xd10 [ 66.652122][ T244] ext4_map_blocks+0x4cb/0x1640 [ 66.657137][ T244] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 66.662337][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 66.667866][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 66.673915][ T244] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 66.680047][ T244] ext4_writepages+0x1a83/0x33c0 [ 66.685011][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 66.690632][ T244] ? __lock_acquire+0x2224/0x48b0 [ 66.695645][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 66.701618][ T244] ? arch_stack_walk+0x5e/0xf0 [ 66.706386][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 66.713244][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 66.718907][ T244] ? do_writepages+0xf3/0x2a0 [ 66.723682][ T244] do_writepages+0xf3/0x2a0 [ 66.728353][ T244] ? page_writeback_cpu_online+0x10/0x10 [ 66.734176][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 66.739735][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 66.745713][ T244] ? lock_downgrade+0x840/0x840 [ 66.750578][ T244] __writeback_single_inode+0x12a/0x13d0 [ 66.756406][ T244] ? _raw_spin_unlock+0x24/0x40 [ 66.761445][ T244] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 66.767525][ T244] writeback_sb_inodes+0x515/0xdc0 [ 66.772683][ T244] ? __writeback_single_inode+0x13d0/0x13d0 [ 66.778605][ T244] __writeback_inodes_wb+0xc3/0x250 [ 66.783821][ T244] wb_writeback+0x8c8/0xd40 [ 66.788347][ T244] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 66.794790][ T244] ? cpumask_next+0x3c/0x40 [ 66.799300][ T244] ? get_nr_dirty_inodes+0xd6/0x130 [ 66.804511][ T244] wb_workfn+0xab3/0x1090 [ 66.808855][ T244] ? inode_wait_for_writeback+0x30/0x30 [ 66.814420][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 66.820004][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 66.825998][ T244] process_one_work+0x965/0x1690 [ 66.831044][ T244] ? lock_release+0x800/0x800 [ 66.835740][ T244] ? pwq_dec_nr_in_flight+0x310/0x310 [ 66.841642][ T244] ? rwlock_bug.part.0+0x90/0x90 [ 66.846641][ T244] worker_thread+0x96/0xe10 [ 66.852954][ T244] ? process_one_work+0x1690/0x1690 [ 66.858159][ T244] kthread+0x3b5/0x4a0 [ 66.862259][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 66.868068][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 66.873802][ T244] ret_from_fork+0x1f/0x30 [ 66.890513][ T244] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/244 [ 66.899734][ T244] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.905752][ T244] CPU: 0 PID: 244 Comm: kworker/u4:5 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 66.915115][ T244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.925181][ T244] Workqueue: writeback wb_workfn (flush-8:0) [ 66.932128][ T244] Call Trace: [ 66.935438][ T244] dump_stack+0x18f/0x20d [ 66.939789][ T244] check_preemption_disabled+0x20d/0x220 [ 66.945437][ T244] ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.950557][ T244] ? ext4_find_extent+0x81a/0xad0 [ 66.955600][ T244] ? ext4_ext_search_right+0x2ca/0xb20 [ 66.961166][ T244] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 66.966899][ T244] ext4_ext_map_blocks+0x201b/0x33e0 [ 66.972246][ T244] ? ext4_ext_release+0x10/0x10 [ 66.977137][ T244] ? down_write_killable+0x170/0x170 [ 66.982426][ T244] ? ext4_es_lookup_extent+0x41d/0xd10 [ 66.987906][ T244] ext4_map_blocks+0x4cb/0x1640 [ 66.992908][ T244] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 66.998124][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 67.004174][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 67.010695][ T244] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 67.016161][ T244] ext4_writepages+0x1a83/0x33c0 [ 67.021153][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 67.026889][ T244] ? __lock_acquire+0x2224/0x48b0 [ 67.032393][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 67.039190][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 67.045191][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 67.051198][ T244] ? do_writepages+0xf3/0x2a0 [ 67.055891][ T244] do_writepages+0xf3/0x2a0 [ 67.060424][ T244] ? page_writeback_cpu_online+0x10/0x10 [ 67.066188][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 67.071850][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 67.078278][ T244] ? lock_downgrade+0x840/0x840 [ 67.083151][ T244] __writeback_single_inode+0x12a/0x13d0 [ 67.088910][ T244] ? _raw_spin_unlock+0x24/0x40 [ 67.093864][ T244] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 67.099988][ T244] writeback_sb_inodes+0x515/0xdc0 [ 67.106187][ T244] ? __writeback_single_inode+0x13d0/0x13d0 [ 67.112206][ T244] __writeback_inodes_wb+0xc3/0x250 [ 67.117419][ T244] wb_writeback+0x8c8/0xd40 [ 67.122045][ T244] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 67.128483][ T244] ? cpumask_next+0x3c/0x40 [ 67.133013][ T244] ? get_nr_dirty_inodes+0xd6/0x130 [ 67.138329][ T244] wb_workfn+0xab3/0x1090 [ 67.142653][ T244] ? inode_wait_for_writeback+0x30/0x30 [ 67.148200][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 67.153734][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 67.160860][ T244] process_one_work+0x965/0x1690 [ 67.166273][ T244] ? lock_release+0x800/0x800 [ 67.171132][ T244] ? pwq_dec_nr_in_flight+0x310/0x310 [ 67.176487][ T244] ? rwlock_bug.part.0+0x90/0x90 [ 67.181425][ T244] worker_thread+0x96/0xe10 [ 67.185915][ T244] ? process_one_work+0x1690/0x1690 [ 67.192063][ T244] kthread+0x3b5/0x4a0 [ 67.196112][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 67.201825][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 67.207673][ T244] ret_from_fork+0x1f/0x30 [ 67.216946][ T244] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/244 [ 67.229282][ T244] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 67.235544][ T244] CPU: 0 PID: 244 Comm: kworker/u4:5 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 67.244923][ T244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.255438][ T244] Workqueue: writeback wb_workfn (flush-8:0) [ 67.261549][ T244] Call Trace: [ 67.264861][ T244] dump_stack+0x18f/0x20d [ 67.269197][ T244] check_preemption_disabled+0x20d/0x220 [ 67.274950][ T244] ext4_mb_new_blocks+0xa4d/0x3b70 [ 67.280074][ T244] ? ext4_find_extent+0x81a/0xad0 [ 67.285101][ T244] ? ext4_ext_search_right+0x2ca/0xb20 [ 67.290879][ T244] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 67.296771][ T244] ext4_ext_map_blocks+0x201b/0x33e0 [ 67.302173][ T244] ? ext4_ext_release+0x10/0x10 [ 67.307127][ T244] ? down_write_killable+0x170/0x170 [ 67.312551][ T244] ? ext4_es_lookup_extent+0x41d/0xd10 [ 67.318095][ T244] ext4_map_blocks+0x4cb/0x1640 [ 67.323020][ T244] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 67.328310][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 67.333873][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 67.340657][ T244] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 67.346207][ T244] ext4_writepages+0x1a83/0x33c0 [ 67.351321][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 67.358097][ T244] ? __lock_acquire+0x2224/0x48b0 [ 67.363202][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 67.369540][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 67.376603][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 67.382901][ T244] ? do_writepages+0xf3/0x2a0 [ 67.387572][ T244] do_writepages+0xf3/0x2a0 [ 67.392249][ T244] ? page_writeback_cpu_online+0x10/0x10 [ 67.398151][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 67.404072][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 67.410057][ T244] ? lock_downgrade+0x840/0x840 [ 67.415021][ T244] __writeback_single_inode+0x12a/0x13d0 [ 67.421429][ T244] ? _raw_spin_unlock+0x24/0x40 [ 67.426265][ T244] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 67.432245][ T244] writeback_sb_inodes+0x515/0xdc0 [ 67.437345][ T244] ? __writeback_single_inode+0x13d0/0x13d0 [ 67.443259][ T244] __writeback_inodes_wb+0xc3/0x250 [ 67.448655][ T244] wb_writeback+0x8c8/0xd40 [ 67.453256][ T244] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 67.459576][ T244] ? cpumask_next+0x3c/0x40 [ 67.464267][ T244] ? get_nr_dirty_inodes+0xd6/0x130 [ 67.470656][ T244] wb_workfn+0xab3/0x1090 [ 67.474977][ T244] ? inode_wait_for_writeback+0x30/0x30 [ 67.480686][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 67.486684][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 67.492660][ T244] process_one_work+0x965/0x1690 [ 67.497590][ T244] ? lock_release+0x800/0x800 [ 67.502381][ T244] ? pwq_dec_nr_in_flight+0x310/0x310 [ 67.507764][ T244] ? rwlock_bug.part.0+0x90/0x90 [ 67.512800][ T244] worker_thread+0x96/0xe10 [ 67.517507][ T244] ? process_one_work+0x1690/0x1690 [ 67.522721][ T244] kthread+0x3b5/0x4a0 [ 67.526805][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 67.532667][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 67.538381][ T244] ret_from_fork+0x1f/0x30 [ 67.752013][ T6807] can: request_module (can-proto-0) failed. [ 68.654489][ T6807] can: request_module (can-proto-0) failed. [ 68.666544][ T6807] can: request_module (can-proto-0) failed. executing program