[ 51.850993][ T244] ext4_map_blocks+0x4cb/0x1640 [ 51.855866][ T244] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 51.861108][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 51.866809][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 51.872804][ T244] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 51.878290][ T244] ext4_writepages+0x1a83/0x33c0 [ 51.883270][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 51.889006][ T244] ? __lock_acquire+0x2224/0x48b0 [ 51.894058][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 51.900047][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 51.906037][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 51.912026][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 51.917754][ T244] ? do_writepages+0xf3/0x2a0 [ 51.922442][ T244] do_writepages+0xf3/0x2a0 [ 51.927053][ T244] ? page_writeback_cpu_online+0x10/0x10 [ 51.932738][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 51.938322][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 51.944305][ T244] ? lock_downgrade+0x840/0x840 [ 51.949195][ T244] __writeback_single_inode+0x12a/0x13d0 [ 51.954837][ T244] ? _raw_spin_unlock+0x24/0x40 [ 51.959867][ T244] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 51.965862][ T244] writeback_sb_inodes+0x515/0xdc0 [ 51.970994][ T244] ? __writeback_single_inode+0x13d0/0x13d0 [ 51.976929][ T244] __writeback_inodes_wb+0xc3/0x250 [ 51.982138][ T244] wb_writeback+0x8c8/0xd40 [ 51.986659][ T244] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 51.993018][ T244] ? cpumask_next+0x3c/0x40 [ 51.997529][ T244] ? get_nr_dirty_inodes+0xd6/0x130 [ 52.002756][ T244] wb_workfn+0xab3/0x1090 [ 52.007362][ T244] ? inode_wait_for_writeback+0x30/0x30 [ 52.012985][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.018541][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.024535][ T244] process_one_work+0x965/0x1690 [ 52.029489][ T244] ? lock_release+0x800/0x800 [ 52.034187][ T244] ? pwq_dec_nr_in_flight+0x310/0x310 [ 52.039569][ T244] ? rwlock_bug.part.0+0x90/0x90 [ 52.044530][ T244] worker_thread+0x96/0xe10 [ 52.049058][ T244] ? process_one_work+0x1690/0x1690 [ 52.054261][ T244] kthread+0x3b5/0x4a0 [ 52.058334][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 52.064055][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 52.069783][ T244] ret_from_fork+0x1f/0x30 [ 52.123914][ T244] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/244 [ 52.133118][ T244] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 52.139018][ T244] CPU: 0 PID: 244 Comm: kworker/u4:5 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 52.148204][ T244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.158298][ T244] Workqueue: writeback wb_workfn (flush-8:0) [ 52.164278][ T244] Call Trace: [ 52.167608][ T244] dump_stack+0x18f/0x20d [ 52.172112][ T244] check_preemption_disabled+0x20d/0x220 [ 52.177770][ T244] ext4_mb_new_blocks+0xa4d/0x3b70 [ 52.182893][ T244] ? ext4_find_extent+0x81a/0xad0 [ 52.187929][ T244] ? ext4_ext_search_right+0x2ca/0xb20 [ 52.193394][ T244] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 52.199127][ T244] ext4_ext_map_blocks+0x201b/0x33e0 [ 52.204422][ T244] ? ext4_ext_release+0x10/0x10 [ 52.209298][ T244] ? down_write_killable+0x170/0x170 [ 52.214587][ T244] ? ext4_es_lookup_extent+0x41d/0xd10 [ 52.220090][ T244] ext4_map_blocks+0x4cb/0x1640 [ 52.224955][ T244] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 52.230162][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.235712][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.241698][ T244] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 52.247164][ T244] ext4_writepages+0x1a83/0x33c0 [ 52.252127][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 52.258115][ T244] ? __lock_acquire+0x2224/0x48b0 [ 52.263158][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 52.269150][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 52.275141][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 52.280780][ T244] ? do_writepages+0xf3/0x2a0 [ 52.285461][ T244] do_writepages+0xf3/0x2a0 [ 52.289976][ T244] ? page_writeback_cpu_online+0x10/0x10 [ 52.295623][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.301195][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.307190][ T244] ? lock_downgrade+0x840/0x840 [ 52.312049][ T244] __writeback_single_inode+0x12a/0x13d0 [ 52.317692][ T244] ? _raw_spin_unlock+0x24/0x40 [ 52.322550][ T244] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 52.328546][ T244] writeback_sb_inodes+0x515/0xdc0 [ 52.333676][ T244] ? __writeback_single_inode+0x13d0/0x13d0 [ 52.339593][ T244] __writeback_inodes_wb+0xc3/0x250 [ 52.344811][ T244] wb_writeback+0x8c8/0xd40 [ 52.349327][ T244] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 52.355682][ T244] ? cpumask_next+0x3c/0x40 [ 52.360222][ T244] ? get_nr_dirty_inodes+0xd6/0x130 [ 52.365431][ T244] wb_workfn+0xab3/0x1090 [ 52.369776][ T244] ? inode_wait_for_writeback+0x30/0x30 [ 52.375333][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.380895][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.386895][ T244] process_one_work+0x965/0x1690 [ 52.391882][ T244] ? lock_release+0x800/0x800 [ 52.396563][ T244] ? pwq_dec_nr_in_flight+0x310/0x310 [ 52.401943][ T244] ? rwlock_bug.part.0+0x90/0x90 [ 52.406897][ T244] worker_thread+0x96/0xe10 [ 52.411413][ T244] ? process_one_work+0x1690/0x1690 [ 52.416616][ T244] kthread+0x3b5/0x4a0 [ 52.420686][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 52.426404][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 52.432130][ T244] ret_from_fork+0x1f/0x30 [ 52.453825][ T244] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/244 [ 52.463448][ T244] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 52.469357][ T244] CPU: 0 PID: 244 Comm: kworker/u4:5 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 52.478550][ T244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.488648][ T244] Workqueue: writeback wb_workfn (flush-8:0) [ 52.495239][ T244] Call Trace: [ 52.498540][ T244] dump_stack+0x18f/0x20d [ 52.502886][ T244] check_preemption_disabled+0x20d/0x220 [ 52.508527][ T244] ext4_mb_new_blocks+0xa4d/0x3b70 [ 52.513644][ T244] ? ext4_find_extent+0x81a/0xad0 [ 52.518679][ T244] ? ext4_ext_search_right+0x2ca/0xb20 [ 52.524145][ T244] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 52.529964][ T244] ext4_ext_map_blocks+0x201b/0x33e0 [ 52.535269][ T244] ? ext4_ext_release+0x10/0x10 [ 52.540142][ T244] ? down_write_killable+0x170/0x170 [ 52.545427][ T244] ? ext4_es_lookup_extent+0x41d/0xd10 [ 52.550899][ T244] ext4_map_blocks+0x4cb/0x1640 [ 52.556129][ T244] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 52.556154][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.567086][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.573078][ T244] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 52.578544][ T244] ext4_writepages+0x1a83/0x33c0 [ 52.583512][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 52.589149][ T244] ? __lock_acquire+0x2224/0x48b0 [ 52.594273][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 52.600369][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 52.606518][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 52.612901][ T244] ? do_writepages+0xf3/0x2a0 Starting Load/Sa[ 52.617627][ T244] do_writepages+0xf3/0x2a0 [ 52.623502][ T244] ? page_writeback_cpu_online+0x10/0x10 ve RF Kill Switc[ 52.629151][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 h Status...[ 52.636173][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.643229][ T244] ? lock_downgrade+0x840/0x840 [ 52.648215][ T244] __writeback_single_inode+0x12a/0x13d0 [ 52.653857][ T244] ? _raw_spin_unlock+0x24/0x40 [ 52.658716][ T244] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 52.664704][ T244] writeback_sb_inodes+0x515/0xdc0 [ 52.669830][ T244] ? __writeback_single_inode+0x13d0/0x13d0 [ 52.675900][ T244] __writeback_inodes_wb+0xc3/0x250 [ 52.678643][ T6725] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6725 [ 52.681103][ T244] wb_writeback+0x8c8/0xd40 [ 52.690501][ T6725] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 52.694921][ T244] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 52.694946][ T244] ? cpumask_next+0x3c/0x40 [ 52.694962][ T244] ? get_nr_dirty_inodes+0xd6/0x130 [ 52.694984][ T244] wb_workfn+0xab3/0x1090 [ 52.695006][ T244] ? inode_wait_for_writeback+0x30/0x30 [ 52.695035][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.732608][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.738574][ T244] process_one_work+0x965/0x1690 [ 52.743516][ T244] ? lock_release+0x800/0x800 [ 52.748172][ T244] ? pwq_dec_nr_in_flight+0x310/0x310 [ 52.753526][ T244] ? rwlock_bug.part.0+0x90/0x90 [ 52.758450][ T244] worker_thread+0x96/0xe10 [ 52.762943][ T244] ? process_one_work+0x1690/0x1690 [ 52.768123][ T244] kthread+0x3b5/0x4a0 [ 52.772175][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 52.777882][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 52.783584][ T244] ret_from_fork+0x1f/0x30 [ 52.787997][ T6725] CPU: 1 PID: 6725 Comm: systemd-rfkill Not tainted 5.7.0-next-20200608-syzkaller #0 [ 52.797446][ T6725] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.807497][ T6725] Call Trace: [ 52.810801][ T6725] dump_stack+0x18f/0x20d [ 52.811786][ T244] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/244 [ 52.815135][ T6725] check_preemption_disabled+0x20d/0x220 [ 52.815153][ T6725] ext4_mb_new_blocks+0xa4d/0x3b70 [ 52.815177][ T6725] ? ext4_ext_search_right+0x2ca/0xb20 [ 52.815194][ T6725] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 52.815216][ T6725] ext4_ext_map_blocks+0x201b/0x33e0 [ 52.815239][ T6725] ? ext4_ext_release+0x10/0x10 [ 52.815275][ T6725] ? down_write_killable+0x170/0x170 [ 52.815289][ T6725] ? ext4_es_lookup_extent+0x41d/0xd10 [ 52.815311][ T6725] ext4_map_blocks+0x4cb/0x1640 [ 52.815332][ T6725] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 52.824449][ T244] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 52.830024][ T6725] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.830043][ T6725] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.894482][ T6725] ? prandom_u32_state+0xe/0x170 [ 52.899436][ T6725] ? __brelse+0x84/0xa0 [ 52.903602][ T6725] ? __ext4_new_inode+0x144/0x55e0 [ 52.908701][ T6725] ext4_getblk+0xad/0x520 [ 52.913028][ T6725] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 52.918734][ T6725] ? ext4_free_inode+0x1700/0x1700 [ 52.923912][ T6725] ext4_bread+0x7c/0x380 [ 52.928135][ T6725] ? ext4_getblk+0x520/0x520 [ 52.932714][ T6725] ? dquot_get_next_dqblk+0x180/0x180 [ 52.938074][ T6725] ext4_append+0x153/0x360 [ 52.942476][ T6725] ext4_mkdir+0x5e0/0xdf0 [ 52.946793][ T6725] ? ext4_rmdir+0xde0/0xde0 [ 52.951281][ T6725] ? security_inode_permission+0xc4/0xf0 [ 52.956911][ T6725] vfs_mkdir+0x419/0x690 [ 52.961155][ T6725] do_mkdirat+0x21e/0x280 [ 52.965468][ T6725] ? __ia32_sys_mknod+0xb0/0xb0 [ 52.970301][ T6725] ? do_syscall_64+0x1c/0xe0 [ 52.974885][ T6725] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.980848][ T6725] do_syscall_64+0x60/0xe0 [ 52.985247][ T6725] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 52.991130][ T6725] RIP: 0033:0x7f4434923687 [ 52.995520][ T6725] Code: Bad RIP value. [ 52.999575][ T6725] RSP: 002b:00007ffdae632a58 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 53.007966][ T6725] RAX: ffffffffffffffda RBX: 0000558203541985 RCX: 00007f4434923687 [ 53.015938][ T6725] RDX: 00007ffdae632920 RSI: 00000000000001ed RDI: 0000558203541985 [ 53.023900][ T6725] RBP: 00007f4434923680 R08: 0000000000000100 R09: 0000000000000000 [ 53.031868][ T6725] R10: 0000558203541980 R11: 0000000000000246 R12: 00000000000001ed [ 53.039825][ T6725] R13: 00007ffdae632be0 R14: 0000000000000000 R15: 0000000000000000 [ 53.048154][ T244] CPU: 0 PID: 244 Comm: kworker/u4:5 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 53.057554][ T244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.067639][ T244] Workqueue: writeback wb_workfn (flush-8:0) [ 53.073617][ T244] Call Trace: [ 53.076915][ T244] dump_stack+0x18f/0x20d [ 53.081259][ T244] check_preemption_disabled+0x20d/0x220 [ 53.086901][ T244] ext4_mb_new_blocks+0xa4d/0x3b70 [ 53.092025][ T244] ? ext4_find_extent+0x81a/0xad0 [ 53.097066][ T244] ? ext4_ext_search_right+0x2ca/0xb20 [ 53.102542][ T244] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 53.108276][ T244] ext4_ext_map_blocks+0x201b/0x33e0 [ 53.113579][ T244] ? ext4_ext_release+0x10/0x10 [ 53.118461][ T244] ? down_write_killable+0x170/0x170 [ 53.123762][ T244] ? ext4_es_lookup_extent+0x41d/0xd10 [ 53.129667][ T244] ext4_map_blocks+0x4cb/0x1640 [ 53.129695][ T244] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 53.129720][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 53.129737][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 53.129754][ T244] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 53.129772][ T244] ext4_writepages+0x1a83/0x33c0 [ 53.129811][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [[ 53.129829][ T244] ? __lock_acquire+0x2224/0x48b0 [ 53.129862][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 53.129885][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 53.129903][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 53.129918][ T244] ? do_writepages+0xf3/0x2a0 [ 53.129933][ T244] do_writepages+0xf3/0x2a0 [ 53.129956][ T244] ? page_writeback_cpu_online+0x10/0x10  OK [0[ 53.129979][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 53.129996][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 m] [ 53.130010][ T244] ? lock_downgrade+0x840/0x840 [ 53.130033][ T244] __writeback_single_inode+0x12a/0x13d0 [ 53.130050][ T244] ? _raw_spin_unlock+0x24/0x40 [ 53.130065][ T244] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 53.130084][ T244] writeback_sb_inodes+0x515/0xdc0 [ 53.130114][ T244] ? __writeback_single_inode+0x13d0/0x13d0 Started Load/Sav[ 53.130151][ T244] __writeback_inodes_wb+0xc3/0x250 [ 53.130175][ T244] wb_writeback+0x8c8/0xd40 e RF Kill Switch[ 53.130200][ T244] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 53.130229][ T244] ? cpumask_next+0x3c/0x40 Status.[ 53.130246][ T244] ? get_nr_dirty_inodes+0xd6/0x130 [ 53.130267][ T244] wb_workfn+0xab3/0x1090 [ 53.130291][ T244] ? inode_wait_for_writeback+0x30/0x30 [ 53.130314][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 53.130329][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 53.130354][ T244] process_one_work+0x965/0x1690 [ 53.130379][ T244] ? lock_release+0x800/0x800 [ 53.130396][ T244] ? pwq_dec_nr_in_flight+0x310/0x310 [ 53.130416][ T244] ? rwlock_bug.part.0+0x90/0x90 [ 53.130442][ T244] worker_thread+0x96/0xe10 [ 53.130468][ T244] ? process_one_work+0x1690/0x1690 [ 53.130482][ T244] kthread+0x3b5/0x4a0 [ 53.130493][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 53.130504][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 53.130521][ T244] ret_from_fork+0x1f/0x30 [ 53.134770][ T244] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/244 [ 53.377872][ T244] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 53.377888][ T244] CPU: 0 PID: 244 Comm: kworker/u4:5 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 53.377903][ T244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.377917][ T244] Workqueue: writeback wb_workfn (flush-8:0) [ 53.410436][ T244] Call Trace: [ 53.410462][ T244] dump_stack+0x18f/0x20d [ 53.410484][ T244] check_preemption_disabled+0x20d/0x220 [ 53.410501][ T244] ext4_mb_new_blocks+0xa4d/0x3b70 [ 53.410517][ T244] ? ext4_find_extent+0x81a/0xad0 [ 53.410537][ T244] ? ext4_ext_search_right+0x2ca/0xb20 [ 53.410553][ T244] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 53.410576][ T244] ext4_ext_map_blocks+0x201b/0x33e0 [ 53.410600][ T244] ? ext4_ext_release+0x10/0x10 [ 53.410634][ T244] ? down_write_killable+0x170/0x170 [ 53.410649][ T244] ? ext4_es_lookup_extent+0x41d/0xd10 [ 53.410672][ T244] ext4_map_blocks+0x4cb/0x1640 [ 53.410693][ T244] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 53.410712][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 53.410727][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 53.410743][ T244] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 53.410761][ T244] ext4_writepages+0x1a83/0x33c0 [ 53.410794][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 53.410812][ T244] ? __lock_acquire+0x2224/0x48b0 [ 53.410842][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 53.410863][ T244] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 53.410881][ T244] ? __ext4_mark_inode_dirty+0x940/0x940 [ 53.410902][ T244] ? do_writepages+0xf3/0x2a0 [ 53.410917][ T244] do_writepages+0xf3/0x2a0 [ 53.410939][ T244] ? page_writeback_cpu_online+0x10/0x10 [ 53.410962][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 53.410979][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 53.410994][ T244] ? lock_downgrade+0x840/0x840 [ 53.411017][ T244] __writeback_single_inode+0x12a/0x13d0 [ 53.411034][ T244] ? _raw_spin_unlock+0x24/0x40 [ 53.411055][ T244] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 53.411073][ T244] writeback_sb_inodes+0x515/0xdc0 [ 53.411101][ T244] ? __writeback_single_inode+0x13d0/0x13d0 [ 53.411140][ T244] __writeback_inodes_wb+0xc3/0x250 [ 53.411164][ T244] wb_writeback+0x8c8/0xd40 [ 53.411190][ T244] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 53.411214][ T244] ? cpumask_next+0x3c/0x40 [ 53.411227][ T244] ? get_nr_dirty_inodes+0xd6/0x130 [ 53.411245][ T244] wb_workfn+0xab3/0x1090 [ 53.411264][ T244] ? inode_wait_for_writeback+0x30/0x30 [ 53.411281][ T244] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 53.411295][ T244] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 53.411314][ T244] process_one_work+0x965/0x1690 [ 53.411334][ T244] ? lock_release+0x800/0x800 [ 53.411346][ T244] ? pwq_dec_nr_in_flight+0x310/0x310 [ 53.411363][ T244] ? rwlock_bug.part.0+0x90/0x90 [ 53.411384][ T244] worker_thread+0x96/0xe10 [ 53.411406][ T244] ? process_one_work+0x1690/0x1690 [ 53.411420][ T244] kthread+0x3b5/0x4a0 [ 53.411432][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 53.411442][ T244] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 53.411458][ T244] ret_from_fork+0x1f/0x30 Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.239' (ECDSA) to the list of known hosts. 2020/06/08 13:49:20 fuzzer started 2020/06/08 13:49:20 connecting to host at 10.128.0.26:43781 2020/06/08 13:49:20 checking machine... 2020/06/08 13:49:20 checking revisions... 2020/06/08 13:49:20 testing simple program... syzkaller login: [ 57.680490][ T6797] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6797 [ 57.689551][ T6797] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 57.695549][ T6797] CPU: 1 PID: 6797 Comm: syz-fuzzer Not tainted 5.7.0-next-20200608-syzkaller #0 [ 57.704748][ T6797] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.715230][ T6797] Call Trace: [ 57.718511][ T6797] dump_stack+0x18f/0x20d [ 57.722825][ T6797] check_preemption_disabled+0x20d/0x220 [ 57.728449][ T6797] ext4_mb_new_blocks+0xa4d/0x3b70 [ 57.733544][ T6797] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.739034][ T6797] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.744754][ T6797] ext4_ext_map_blocks+0x201b/0x33e0 [ 57.750029][ T6797] ? ext4_ext_release+0x10/0x10 [ 57.754969][ T6797] ? down_write_killable+0x170/0x170 [ 57.760232][ T6797] ? ext4_es_lookup_extent+0x41d/0xd10 [ 57.765672][ T6797] ext4_map_blocks+0x4cb/0x1640 [ 57.770506][ T6797] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.775680][ T6797] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.781206][ T6797] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.787170][ T6797] ? prandom_u32_state+0xe/0x170 [ 57.792088][ T6797] ? __brelse+0x84/0xa0 [ 57.796220][ T6797] ? __ext4_new_inode+0x144/0x55e0 [ 57.801309][ T6797] ext4_getblk+0xad/0x520 [ 57.805616][ T6797] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 57.811353][ T6797] ? ext4_free_inode+0x1700/0x1700 [ 57.816454][ T6797] ext4_bread+0x7c/0x380 [ 57.820848][ T6797] ? ext4_getblk+0x520/0x520 [ 57.825425][ T6797] ? dquot_get_next_dqblk+0x180/0x180 [ 57.830781][ T6797] ext4_append+0x153/0x360 [ 57.836219][ T6797] ext4_mkdir+0x5e0/0xdf0 [ 57.840613][ T6797] ? ext4_rmdir+0xde0/0xde0 [ 57.845179][ T6797] ? security_inode_permission+0xc4/0xf0 [ 57.850818][ T6797] vfs_mkdir+0x419/0x690 [ 57.855055][ T6797] do_mkdirat+0x21e/0x280 [ 57.859376][ T6797] ? __ia32_sys_mknod+0xb0/0xb0 [ 57.864209][ T6797] ? do_syscall_64+0x1c/0xe0 [ 57.868802][ T6797] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 57.874783][ T6797] do_syscall_64+0x60/0xe0 [ 57.879209][ T6797] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 57.885100][ T6797] RIP: 0033:0x4b02a0 [ 57.888965][ T6797] Code: Bad RIP value. [ 57.893018][ T6797] RSP: 002b:000000c0000e54b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 57.903341][ T6797] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 57.911408][ T6797] RDX: 00000000000001c0 RSI: 000000c00009cd40 RDI: ffffffffffffff9c [ 57.919387][ T6797] RBP: 000000c0000e5510 R08: 0000000000000000 R09: 0000000000000000 [ 57.927339][ T6797] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 57.935289][ T6797] R13: 000000000000006b R14: 000000000000006a R15: 0000000000000100 [ 57.952964][ T6815] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6815 [ 57.963140][ T6815] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 57.969895][ T6815] CPU: 1 PID: 6815 Comm: syz-executor.0 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 57.979951][ T6815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.989999][ T6815] Call Trace: [ 57.993460][ T6815] dump_stack+0x18f/0x20d [ 57.997784][ T6815] check_preemption_disabled+0x20d/0x220 [ 58.003416][ T6815] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.008536][ T6815] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.014011][ T6815] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.019724][ T6815] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.025006][ T6815] ? ext4_ext_release+0x10/0x10 [ 58.029847][ T6815] ? down_write_killable+0x170/0x170 [ 58.035108][ T6815] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.040547][ T6815] ext4_map_blocks+0x4cb/0x1640 [ 58.045393][ T6815] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.050568][ T6815] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.056099][ T6815] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.062063][ T6815] ? prandom_u32_state+0xe/0x170 [ 58.066976][ T6815] ? __brelse+0x84/0xa0 [ 58.071219][ T6815] ? __ext4_new_inode+0x144/0x55e0 [ 58.076322][ T6815] ext4_getblk+0xad/0x520 [ 58.080639][ T6815] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.086398][ T6815] ? ext4_free_inode+0x1700/0x1700 [ 58.091525][ T6815] ext4_bread+0x7c/0x380 [ 58.095858][ T6815] ? ext4_getblk+0x520/0x520 [ 58.100439][ T6815] ? dquot_get_next_dqblk+0x180/0x180 [ 58.105809][ T6815] ext4_append+0x153/0x360 [ 58.110205][ T6815] ext4_mkdir+0x5e0/0xdf0 [ 58.114513][ T6815] ? ext4_rmdir+0xde0/0xde0 [ 58.118993][ T6815] ? security_inode_permission+0xc4/0xf0 [ 58.124604][ T6815] vfs_mkdir+0x419/0x690 [ 58.128821][ T6815] do_mkdirat+0x21e/0x280 [ 58.133125][ T6815] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.137978][ T6815] ? do_syscall_64+0x1c/0xe0 [ 58.142545][ T6815] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.148511][ T6815] do_syscall_64+0x60/0xe0 [ 58.152906][ T6815] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.158781][ T6815] RIP: 0033:0x45bee7 [ 58.162644][ T6815] Code: Bad RIP value. [ 58.166689][ T6815] RSP: 002b:00007ffddfb37fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 58.175091][ T6815] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 58.183038][ T6815] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffddfb381b0 [ 58.190984][ T6815] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002700 [ 58.198945][ T6815] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 58.207153][ T6815] R13: 00007ffddfb381b0 R14: 8421084210842109 R15: 00007ffddfb381bc [ 58.328605][ T6817] IPVS: ftp: loaded support on port[0] = 21 [ 58.365743][ T6817] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6817 [ 58.375277][ T6817] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.381230][ T6817] CPU: 0 PID: 6817 Comm: syz-executor.0 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 58.390696][ T6817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.400740][ T6817] Call Trace: [ 58.404025][ T6817] dump_stack+0x18f/0x20d [ 58.408348][ T6817] check_preemption_disabled+0x20d/0x220 [ 58.413972][ T6817] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.419072][ T6817] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.424510][ T6817] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.430232][ T6817] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.435506][ T6817] ? ext4_ext_release+0x10/0x10 [ 58.440348][ T6817] ? down_write_killable+0x170/0x170 [ 58.445624][ T6817] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.451076][ T6817] ext4_map_blocks+0x4cb/0x1640 [ 58.455907][ T6817] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.461081][ T6817] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.466602][ T6817] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.472567][ T6817] ? prandom_u32_state+0xe/0x170 [ 58.477480][ T6817] ? __brelse+0x84/0xa0 [ 58.481612][ T6817] ? __ext4_new_inode+0x144/0x55e0 [ 58.486718][ T6817] ext4_getblk+0xad/0x520 [ 58.491035][ T6817] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.496744][ T6817] ? ext4_free_inode+0x1700/0x1700 [ 58.501851][ T6817] ext4_bread+0x7c/0x380 [ 58.506068][ T6817] ? ext4_getblk+0x520/0x520 [ 58.510632][ T6817] ? dquot_get_next_dqblk+0x180/0x180 [ 58.515984][ T6817] ext4_append+0x153/0x360 [ 58.520398][ T6817] ext4_mkdir+0x5e0/0xdf0 [ 58.524714][ T6817] ? ext4_rmdir+0xde0/0xde0 [ 58.529192][ T6817] ? security_inode_permission+0xc4/0xf0 [ 58.534806][ T6817] vfs_mkdir+0x419/0x690 [ 58.539043][ T6817] do_mkdirat+0x21e/0x280 [ 58.543365][ T6817] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.548209][ T6817] ? do_syscall_64+0x1c/0xe0 [ 58.552782][ T6817] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.558917][ T6817] do_syscall_64+0x60/0xe0 [ 58.563313][ T6817] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.569183][ T6817] RIP: 0033:0x45bee7 [ 58.573056][ T6817] Code: Bad RIP value. [ 58.577102][ T6817] RSP: 002b:00007ffddfb37ec8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 58.585484][ T6817] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 58.593441][ T6817] RDX: 00007ffddfb37f13 RSI: 00000000000001ff RDI: 00007ffddfb37f10 [ 58.601401][ T6817] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 58.609374][ T6817] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 58.617422][ T6817] R13: 00007ffddfb37f00 R14: 0000000000000000 R15: 00007ffddfb37f10 [ 58.667057][ T6817] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6817 [ 58.676670][ T6817] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.682826][ T6817] CPU: 1 PID: 6817 Comm: syz-executor.0 Not tainted 5.7.0-next-20200608-syzkaller #0 [ 58.692274][ T6817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.702425][ T6817] Call Trace: [ 58.705723][ T6817] dump_stack+0x18f/0x20d [ 58.710191][ T6817] check_preemption_disabled+0x20d/0x220 [ 58.715831][ T6817] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.720967][ T6817] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.726419][ T6817] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.732133][ T6817] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.737430][ T6817] ? ext4_ext_release+0x10/0x10 [ 58.742288][ T6817] ? down_write_killable+0x170/0x170 [ 58.747638][ T6817] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.753132][ T6817] ext4_map_blocks+0x4cb/0x1640 [ 58.757965][ T6817] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.763152][ T6817] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.768695][ T6817] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.774669][ T6817] ? prandom_u32_state+0xe/0x170 [ 58.779603][ T6817] ? __brelse+0x84/0xa0 [ 58.783906][ T6817] ? __ext4_new_inode+0x144/0x55e0 [ 58.788993][ T6817] ext4_getblk+0xad/0x520 [ 58.793302][ T6817] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.799026][ T6817] ? ext4_free_inode+0x1700/0x1700 [ 58.804115][ T6817] ext4_bread+0x7c/0x380 [ 58.808333][ T6817] ? ext4_getblk+0x520/0x520 [ 58.812901][ T6817] ? dquot_get_next_dqblk+0x180/0x180 [ 58.818252][ T6817] ext4_append+0x153/0x360 [ 58.822667][ T6817] ext4_mkdir+0x5e0/0xdf0 [ 58.827136][ T6817] ? ext4_rmdir+0xde0/0xde0 [ 58.831644][ T6817] ? security_inode_permission+0xc4/0xf0 [ 58.837274][ T6817] vfs_mkdir+0x419/0x690 [ 58.841511][ T6817] do_mkdirat+0x21e/0x280 [ 58.845829][ T6817] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.850659][ T6817] ? do_syscall_64+0x1c/0xe0 [ 58.855250][ T6817] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.861221][ T6817] do_syscall_64+0x60/0xe0 [ 58.865621][ T6817] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.871511][ T6817] RIP: 0033:0x45bee7 [ 58.875376][ T6817] Code: Bad RIP value. [ 58.879421][ T6817] RSP: 002b:00007ffddfb37ec8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 58.887831][ T6817] RAX: ffffffffffffffda RBX: 000000000000e528 RCX: 000000000045bee7 [ 58.895788][ T6817] RDX: 00007ffddfb37f13 RSI: 00000000000001ff RDI: 00007ffddfb37f10 [ 58.903741][ T6817] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 2020/06/08 13:49:22 building call list... [ 58.911712][ T6817] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 58.919677][ T6817] R13: 00007ffddfb37f00 R14: 000000000000e51a R15: 00007ffddfb37f10 [ 59.209159][ T244] tipc: TX() has been purged, node left! executing program [ 60.615288][ T6814] can: request_module (can-proto-0) failed. [ 61.183976][ T6814] can: request_module (can-proto-0) failed. [ 61.196056][ T6814] can: request_module (can-proto-0) failed. [ 61.511944][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 61.521139][ T1155] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.527027][ T1155] CPU: 1 PID: 1155 Comm: khugepaged Not tainted 5.7.0-next-20200608-syzkaller #0 [ 61.536113][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.546144][ T1155] Call Trace: [ 61.549431][ T1155] dump_stack+0x18f/0x20d [ 61.553812][ T1155] check_preemption_disabled+0x20d/0x220 [ 61.559530][ T1155] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.564670][ T1155] ? ext4_find_extent+0x81a/0xad0 [ 61.569702][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.575157][ T1155] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.580862][ T1155] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.586130][ T1155] ? ext4_ext_release+0x10/0x10 [ 61.590973][ T1155] ? down_write_killable+0x170/0x170 [ 61.596408][ T1155] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.601861][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 61.606711][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.611990][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.617511][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.623553][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.629003][ T1155] ext4_writepages+0x1a83/0x33c0 [ 61.633953][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.639564][ T1155] ? __lock_acquire+0x2224/0x48b0 [ 61.644593][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.650220][ T1155] ? do_writepages+0xf3/0x2a0 [ 61.654878][ T1155] do_writepages+0xf3/0x2a0 [ 61.659384][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 61.664996][ T1155] ? do_raw_spin_lock+0x120/0x2d0 [ 61.670008][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 61.675356][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 61.680198][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.685925][ T1155] ? collapse_file+0x35a2/0x4330 [ 61.690853][ T1155] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 61.697690][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.702893][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.708858][ T1155] collapse_file+0x35ac/0x4330 [ 61.713610][ T1155] ? collapse_huge_page+0x4350/0x4350 [ 61.718975][ T1155] ? khugepaged+0x2506/0x3fc0 [ 61.723633][ T1155] ? xas_find+0x31a/0x880 [ 61.727948][ T1155] ? check_preemption_disabled+0x38/0x220 [ 61.733644][ T1155] khugepaged+0x3041/0x3fc0 [ 61.738158][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.744740][ T1155] ? lock_downgrade+0x840/0x840 [ 61.749939][ T1155] ? finish_wait+0x260/0x260 [ 61.758852][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.767019][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.774313][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 61.779408][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.785727][ T1155] kthread+0x3b5/0x4a0 [ 61.790034][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.796177][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.802918][ T1155] ret_from_fork+0x1f/0x30 [ 61.873293][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 61.882658][ T1155] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.888732][ T1155] CPU: 1 PID: 1155 Comm: khugepaged Not tainted 5.7.0-next-20200608-syzkaller #0 [ 61.898499][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.908716][ T1155] Call Trace: [ 61.912934][ T1155] dump_stack+0x18f/0x20d [ 61.917488][ T1155] check_preemption_disabled+0x20d/0x220 [ 61.923312][ T1155] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.928417][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.933913][ T1155] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.940120][ T1155] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.946439][ T1155] ? ext4_ext_release+0x10/0x10 [ 61.951294][ T1155] ? down_write_killable+0x170/0x170 [ 61.957293][ T1155] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.962918][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 61.967841][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.976079][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.981627][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.987696][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.993137][ T1155] ext4_writepages+0x1a83/0x33c0 [ 61.998078][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.003810][ T1155] ? __lock_acquire+0x2224/0x48b0 [ 62.008844][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.014455][ T1155] ? do_writepages+0xf3/0x2a0 [ 62.019115][ T1155] do_writepages+0xf3/0x2a0 [ 62.023631][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 62.029291][ T1155] ? do_raw_spin_lock+0x120/0x2d0 [ 62.034308][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 62.039505][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 62.044339][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.050050][ T1155] ? collapse_file+0x35a2/0x4330 [ 62.054975][ T1155] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 62.061040][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.066213][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.072173][ T1155] collapse_file+0x35ac/0x4330 [ 62.076931][ T1155] ? collapse_huge_page+0x4350/0x4350 [ 62.082296][ T1155] ? khugepaged+0x2506/0x3fc0 [ 62.087849][ T1155] ? xas_find+0x31a/0x880 [ 62.092167][ T1155] ? check_preemption_disabled+0x38/0x220 [ 62.097862][ T1155] khugepaged+0x3041/0x3fc0 [ 62.102382][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.108088][ T1155] ? lock_downgrade+0x840/0x840 [ 62.112994][ T1155] ? finish_wait+0x260/0x260 [ 62.117569][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.123355][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.129318][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 62.134325][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.139934][ T1155] kthread+0x3b5/0x4a0 [ 62.143979][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.149670][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.155366][ T1155] ret_from_fork+0x1f/0x30 [ 62.204515][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 62.213631][ T1155] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.219743][ T1155] CPU: 1 PID: 1155 Comm: khugepaged Not tainted 5.7.0-next-20200608-syzkaller #0 [ 62.228855][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.238912][ T1155] Call Trace: [ 62.242220][ T1155] dump_stack+0x18f/0x20d [ 62.246562][ T1155] check_preemption_disabled+0x20d/0x220 [ 62.252209][ T1155] ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.257339][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.262808][ T1155] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 62.268984][ T1155] ext4_ext_map_blocks+0x201b/0x33e0 [ 62.274283][ T1155] ? ext4_ext_release+0x10/0x10 [ 62.279163][ T1155] ? down_write_killable+0x170/0x170 [ 62.284481][ T1155] ? ext4_es_lookup_extent+0x41d/0xd10 [ 62.289955][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 62.294827][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.300028][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.305563][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.311535][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.316975][ T1155] ext4_writepages+0x1a83/0x33c0 [ 62.321917][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.327528][ T1155] ? __lock_acquire+0x2224/0x48b0 [ 62.332987][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.338614][ T1155] ? do_writepages+0xf3/0x2a0 [ 62.343269][ T1155] do_writepages+0xf3/0x2a0 [ 62.347772][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 62.353384][ T1155] ? do_raw_spin_lock+0x120/0x2d0 [ 62.358488][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 62.363688][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 62.368523][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.374236][ T1155] ? collapse_file+0x35a2/0x4330 [ 62.379156][ T1155] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 62.385208][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.390400][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.396380][ T1155] collapse_file+0x35ac/0x4330 [ 62.401407][ T1155] ? collapse_huge_page+0x4350/0x4350 [ 62.406762][ T1155] ? khugepaged+0x2506/0x3fc0 [ 62.411427][ T1155] ? xas_find+0x31a/0x880 [ 62.415740][ T1155] ? check_preemption_disabled+0x38/0x220 [ 62.421449][ T1155] khugepaged+0x3041/0x3fc0 [ 62.425951][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.431566][ T1155] ? lock_downgrade+0x840/0x840 [ 62.436404][ T1155] ? finish_wait+0x260/0x260 [ 62.440974][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.446760][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.452725][ T1155] ? __kthre