[ 54.168554][ T4205] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/4205 [ 54.177919][ T4205] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 54.183952][ T4205] CPU: 0 PID: 4205 Comm: kworker/u4:5 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 54.193255][ T4205] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.203322][ T4205] Workqueue: writeback wb_workfn (flush-8:0) [ 54.209304][ T4205] Call Trace: [ 54.212603][ T4205] dump_stack+0x18f/0x20d [ 54.216946][ T4205] check_preemption_disabled+0x20d/0x220 [ 54.222588][ T4205] ext4_mb_new_blocks+0xa4d/0x3b70 [ 54.227713][ T4205] ? ext4_find_extent+0x81a/0xad0 [ 54.232750][ T4205] ? ext4_ext_search_right+0x2ca/0xb20 [ 54.238233][ T4205] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 54.243964][ T4205] ext4_ext_map_blocks+0x201b/0x33e0 [ 54.249263][ T4205] ? ext4_ext_release+0x10/0x10 [ 54.254142][ T4205] ? down_write_killable+0x170/0x170 [ 54.259430][ T4205] ? ext4_es_lookup_extent+0x41d/0xd10 [ 54.264903][ T4205] ext4_map_blocks+0x4cb/0x1640 [ 54.269799][ T4205] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 54.275015][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.280573][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.286562][ T4205] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 54.292028][ T4205] ext4_writepages+0x1ab5/0x3400 [ 54.297001][ T4205] ? __ext4_mark_inode_dirty+0x940/0x940 [ 54.302636][ T4205] ? __lock_acquire+0x2224/0x48b0 [ 54.308060][ T4205] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 54.308086][ T4205] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 54.308105][ T4205] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 54.308124][ T4205] ? __ext4_mark_inode_dirty+0x940/0x940 [ 54.308138][ T4205] ? do_writepages+0xfa/0x2a0 [ 54.308152][ T4205] do_writepages+0xfa/0x2a0 [ 54.308173][ T4205] ? page_writeback_cpu_online+0x10/0x10 [ 54.308195][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.308210][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.308223][ T4205] ? lock_downgrade+0x840/0x840 [ 54.308244][ T4205] __writeback_single_inode+0x12a/0x13d0 [ 54.308260][ T4205] ? _raw_spin_unlock+0x24/0x40 [ 54.308275][ T4205] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 54.308297][ T4205] writeback_sb_inodes+0x515/0xdc0 [ 54.308328][ T4205] ? __writeback_single_inode+0x13d0/0x13d0 [ 54.308367][ T4205] __writeback_inodes_wb+0xc3/0x250 Starting Load/Sa[ 54.308392][ T4205] wb_writeback+0x8db/0xd50 [ 54.308420][ T4205] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 ve RF Kill Switc[ 54.308442][ T4205] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 54.308463][ T4205] ? cpumask_next+0x3c/0x40 h Status...[ 54.308480][ T4205] ? get_nr_dirty_inodes+0xd6/0x130 [ 54.308504][ T4205] wb_workfn+0xab3/0x1090 [ 54.308529][ T4205] ? inode_wait_for_writeback+0x30/0x30 [ 54.308551][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.308567][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.308592][ T4205] process_one_work+0x965/0x1690 [ 54.308617][ T4205] ? lock_release+0x800/0x800 [ 54.308633][ T4205] ? pwq_dec_nr_in_flight+0x310/0x310 [ 54.308653][ T4205] ? rwlock_bug.part.0+0x90/0x90 [ 54.308680][ T4205] worker_thread+0x96/0xe10 [ 54.308707][ T4205] ? process_one_work+0x1690/0x1690 [ 54.308724][ T4205] kthread+0x3b5/0x4a0 [ 54.308738][ T4205] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 54.308751][ T4205] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 54.308771][ T4205] ret_from_fork+0x1f/0x30 [ 54.327569][ T4205] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/4205 [ 54.484433][ T6729] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6729 [ 54.485073][ T4205] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 54.490339][ T6729] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 54.490354][ T6729] CPU: 1 PID: 6729 Comm: systemd-rfkill Not tainted 5.7.0-next-20200603-syzkaller #0 [ 54.490366][ T6729] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.560596][ T6729] Call Trace: [ 54.563885][ T6729] dump_stack+0x18f/0x20d [ 54.568213][ T6729] check_preemption_disabled+0x20d/0x220 [ 54.573841][ T6729] ext4_mb_new_blocks+0xa4d/0x3b70 [ 54.578942][ T6729] ? ext4_ext_search_right+0x2ca/0xb20 [ 54.584391][ T6729] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 54.590094][ T6729] ext4_ext_map_blocks+0x201b/0x33e0 [ 54.595367][ T6729] ? ext4_ext_release+0x10/0x10 [ 54.600210][ T6729] ? down_write_killable+0x170/0x170 [ 54.605475][ T6729] ? ext4_es_lookup_extent+0x41d/0xd10 [ 54.610923][ T6729] ext4_map_blocks+0x4cb/0x1640 [ 54.615765][ T6729] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 54.620944][ T6729] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.626470][ T6729] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.632441][ T6729] ? prandom_u32_state+0xe/0x170 [ 54.637360][ T6729] ? __brelse+0x84/0xa0 [ 54.641499][ T6729] ? __ext4_new_inode+0x144/0x55e0 [ 54.646598][ T6729] ext4_getblk+0xad/0x520 [ 54.650921][ T6729] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 54.656625][ T6729] ? ext4_free_inode+0x1700/0x1700 [ 54.661719][ T6729] ext4_bread+0x7c/0x380 [ 54.665955][ T6729] ? ext4_getblk+0x520/0x520 [ 54.670529][ T6729] ? dquot_get_next_dqblk+0x180/0x180 [ 54.675892][ T6729] ext4_append+0x153/0x360 [ 54.680292][ T6729] ext4_mkdir+0x5e0/0xdf0 [ 54.684607][ T6729] ? ext4_rmdir+0xde0/0xde0 [ 54.689096][ T6729] ? security_inode_permission+0xc4/0xf0 [ 54.694736][ T6729] vfs_mkdir+0x419/0x690 [ 54.698971][ T6729] do_mkdirat+0x21e/0x280 [ 54.703292][ T6729] ? __ia32_sys_mknod+0xb0/0xb0 [ 54.708153][ T6729] ? do_syscall_64+0x1c/0xe0 [ 54.712730][ T6729] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 54.718706][ T6729] do_syscall_64+0x60/0xe0 [ 54.723120][ T6729] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 54.729001][ T6729] RIP: 0033:0x7f92d076b687 [ 54.733398][ T6729] Code: Bad RIP value. [ 54.737442][ T6729] RSP: 002b:00007ffce8f114e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 54.745831][ T6729] RAX: ffffffffffffffda RBX: 000055a6547a2985 RCX: 00007f92d076b687 [ 54.753798][ T6729] RDX: 00007ffce8f113b0 RSI: 00000000000001ed RDI: 000055a6547a2985 [ 54.761770][ T6729] RBP: 00007f92d076b680 R08: 0000000000000100 R09: 0000000000000000 [ 54.769734][ T6729] R10: 000055a6547a2980 R11: 0000000000000246 R12: 00000000000001ed [ 54.777695][ T6729] R13: 00007ffce8f11670 R14: 0000000000000000 R15: 0000000000000000 [ 54.785678][ T4205] CPU: 0 PID: 4205 Comm: kworker/u4:5 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 54.794962][ T4205] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.805029][ T4205] Workqueue: writeback wb_workfn (flush-8:0) [ 54.811018][ T4205] Call Trace: [ 54.814316][ T4205] dump_stack+0x18f/0x20d [ 54.818661][ T4205] check_preemption_disabled+0x20d/0x220 [ 54.824308][ T4205] ext4_mb_new_blocks+0xa4d/0x3b70 [ 54.829426][ T4205] ? ext4_find_extent+0x81a/0xad0 [ 54.834465][ T4205] ? ext4_ext_search_right+0x2ca/0xb20 [ 54.840023][ T4205] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 54.846149][ T4205] ext4_ext_map_blocks+0x201b/0x33e0 [ 54.846181][ T4205] ? ext4_ext_release+0x10/0x10 [ 54.856338][ T4205] ? down_write_killable+0x170/0x170 [ 54.861629][ T4205] ? ext4_es_lookup_extent+0x41d/0xd10 [ 54.867100][ T4205] ext4_map_blocks+0x4cb/0x1640 [ 54.872049][ T4205] ? ext4_issue_zeroout+0x1e0/0x1e0 [[ 54.877256][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.882868][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.888849][ T4205] ? ext4_alloc_io_end_vec+0x145/0x1c0  OK [0[ 54.894398][ T4205] ext4_writepages+0x1ab5/0x3400 [ 54.900747][ T4205] ? __ext4_mark_inode_dirty+0x940/0x940 m] [ 54.906394][ T4205] ? __lock_acquire+0x2224/0x48b0 [ 54.911680][ T4205] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 54.917659][ T4205] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 54.923643][ T4205] ? __ext4_mark_inode_dirty+0x940/0x940 [ 54.929288][ T4205] ? do_writepages+0xfa/0x2a0 Started Load/Sav[ 54.934070][ T4205] do_writepages+0xfa/0x2a0 [ 54.939963][ T4205] ? page_writeback_cpu_online+0x10/0x10 e RF Kill Switch[ 54.947283][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.954215][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.960280][ T4205] ? lock_downgrade+0x840/0x840 Status. [ 54.965163][ T4205] __writeback_single_inode+0x12a/0x13d0 [ 54.971658][ T4205] ? _raw_spin_unlock+0x24/0x40 [ 54.976510][ T4205] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 54.982585][ T4205] writeback_sb_inodes+0x515/0xdc0 [ 54.987723][ T4205] ? __writeback_single_inode+0x13d0/0x13d0 [ 54.993893][ T4205] __writeback_inodes_wb+0xc3/0x250 [ 54.999118][ T4205] wb_writeback+0x8db/0xd50 [ 54.999144][ T4205] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 54.999165][ T4205] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 54.999185][ T4205] ? cpumask_next+0x3c/0x40 [ 54.999200][ T4205] ? get_nr_dirty_inodes+0xd6/0x130 [ 54.999222][ T4205] wb_workfn+0xab3/0x1090 [ 54.999245][ T4205] ? inode_wait_for_writeback+0x30/0x30 [ 54.999267][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.999284][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.999307][ T4205] process_one_work+0x965/0x1690 [ 54.999331][ T4205] ? lock_release+0x800/0x800 [ 54.999346][ T4205] ? pwq_dec_nr_in_flight+0x310/0x310 [ 54.999366][ T4205] ? rwlock_bug.part.0+0x90/0x90 [ 54.999390][ T4205] worker_thread+0x96/0xe10 [ 54.999416][ T4205] ? process_one_work+0x1690/0x1690 [ 54.999431][ T4205] kthread+0x3b5/0x4a0 [ 54.999444][ T4205] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 54.999464][ T4205] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 54.999484][ T4205] ret_from_fork+0x1f/0x30 [ 55.036091][ T4205] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/4205 [ 55.123245][ T4205] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.123261][ T4205] CPU: 1 PID: 4205 Comm: kworker/u4:5 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 55.123269][ T4205] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.123282][ T4205] Workqueue: writeback wb_workfn (flush-8:0) [ 55.123291][ T4205] Call Trace: [ 55.123309][ T4205] dump_stack+0x18f/0x20d [ 55.123332][ T4205] check_preemption_disabled+0x20d/0x220 [ 55.123350][ T4205] ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.123365][ T4205] ? ext4_find_extent+0x81a/0xad0 [ 55.123388][ T4205] ? ext4_ext_search_right+0x2ca/0xb20 [ 55.123404][ T4205] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 55.123427][ T4205] ext4_ext_map_blocks+0x201b/0x33e0 [ 55.123452][ T4205] ? ext4_ext_release+0x10/0x10 [ 55.123482][ T4205] ? down_write_killable+0x170/0x170 [ 55.123494][ T4205] ? ext4_es_lookup_extent+0x41d/0xd10 [ 55.123522][ T4205] ext4_map_blocks+0x4cb/0x1640 [ 55.123547][ T4205] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 55.123569][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.123585][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.123600][ T4205] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 55.123617][ T4205] ext4_writepages+0x1ab5/0x3400 [ 55.123657][ T4205] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.123672][ T4205] ? __lock_acquire+0x2224/0x48b0 [ 55.123705][ T4205] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.123727][ T4205] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.123746][ T4205] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.123762][ T4205] ? do_writepages+0xfa/0x2a0 [ 55.123776][ T4205] do_writepages+0xfa/0x2a0 [ 55.123799][ T4205] ? page_writeback_cpu_online+0x10/0x10 [ 55.123822][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.123839][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.123854][ T4205] ? lock_downgrade+0x840/0x840 [ 55.123876][ T4205] __writeback_single_inode+0x12a/0x13d0 [ 55.123892][ T4205] ? _raw_spin_unlock+0x24/0x40 [ 55.123907][ T4205] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 55.123927][ T4205] writeback_sb_inodes+0x515/0xdc0 [ 55.123951][ T4205] ? __writeback_single_inode+0x13d0/0x13d0 [ 55.123980][ T4205] __writeback_inodes_wb+0xc3/0x250 [ 55.124000][ T4205] wb_writeback+0x8db/0xd50 [ 55.124021][ T4205] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 55.124039][ T4205] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 55.124056][ T4205] ? cpumask_next+0x3c/0x40 [ 55.124071][ T4205] ? get_nr_dirty_inodes+0xd6/0x130 [ 55.124090][ T4205] wb_workfn+0xab3/0x1090 [ 55.124109][ T4205] ? inode_wait_for_writeback+0x30/0x30 [ 55.124128][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.124142][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.124161][ T4205] process_one_work+0x965/0x1690 [ 55.124183][ T4205] ? lock_release+0x800/0x800 [ 55.124194][ T4205] ? pwq_dec_nr_in_flight+0x310/0x310 [ 55.124213][ T4205] ? rwlock_bug.part.0+0x90/0x90 [ 55.124237][ T4205] worker_thread+0x96/0xe10 [ 55.124264][ T4205] ? process_one_work+0x1690/0x1690 [ 55.124281][ T4205] kthread+0x3b5/0x4a0 [ 55.124295][ T4205] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.124308][ T4205] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.124327][ T4205] ret_from_fork+0x1f/0x30 [ 55.204333][ T4205] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/4205 [ 55.471645][ T4205] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.471660][ T4205] CPU: 0 PID: 4205 Comm: kworker/u4:5 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 55.471673][ T4205] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.497069][ T4205] Workqueue: writeback wb_workfn (flush-8:0) [ 55.497081][ T4205] Call Trace: [ 55.497102][ T4205] dump_stack+0x18f/0x20d [ 55.497122][ T4205] check_preemption_disabled+0x20d/0x220 [ 55.497141][ T4205] ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.497156][ T4205] ? ext4_find_extent+0x81a/0xad0 [ 55.497178][ T4205] ? ext4_ext_search_right+0x2ca/0xb20 [ 55.497194][ T4205] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 55.497217][ T4205] ext4_ext_map_blocks+0x201b/0x33e0 [ 55.497241][ T4205] ? ext4_ext_release+0x10/0x10 [ 55.497275][ T4205] ? down_write_killable+0x170/0x170 [ 55.497289][ T4205] ? ext4_es_lookup_extent+0x41d/0xd10 [ 55.497314][ T4205] ext4_map_blocks+0x4cb/0x1640 [ 55.497340][ T4205] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 55.497363][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.497380][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.497397][ T4205] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 55.497416][ T4205] ext4_writepages+0x1ab5/0x3400 [ 55.497454][ T4205] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.497469][ T4205] ? __lock_acquire+0x2224/0x48b0 [ 55.497509][ T4205] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.497529][ T4205] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.497546][ T4205] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.497560][ T4205] ? do_writepages+0xfa/0x2a0 [ 55.497573][ T4205] do_writepages+0xfa/0x2a0 [ 55.497590][ T4205] ? page_writeback_cpu_online+0x10/0x10 [ 55.497607][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.497620][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.497631][ T4205] ? lock_downgrade+0x840/0x840 [ 55.497650][ T4205] __writeback_single_inode+0x12a/0x13d0 [ 55.497663][ T4205] ? _raw_spin_unlock+0x24/0x40 [ 55.497676][ T4205] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 55.497692][ T4205] writeback_sb_inodes+0x515/0xdc0 [ 55.497718][ T4205] ? __writeback_single_inode+0x13d0/0x13d0 [ 55.497751][ T4205] __writeback_inodes_wb+0xc3/0x250 [ 55.497771][ T4205] wb_writeback+0x8db/0xd50 [ 55.497794][ T4205] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 55.497812][ T4205] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 55.497830][ T4205] ? cpumask_next+0x3c/0x40 [ 55.497845][ T4205] ? get_nr_dirty_inodes+0xd6/0x130 [ 55.497865][ T4205] wb_workfn+0xab3/0x1090 [ 55.497888][ T4205] ? inode_wait_for_writeback+0x30/0x30 [ 55.497907][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.497922][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.497972][ T4205] process_one_work+0x965/0x1690 [ 55.497996][ T4205] ? lock_release+0x800/0x800 [ 55.498009][ T4205] ? pwq_dec_nr_in_flight+0x310/0x310 [ 55.498028][ T4205] ? rwlock_bug.part.0+0x90/0x90 [ 55.498051][ T4205] worker_thread+0x96/0xe10 [ 55.498076][ T4205] ? process_one_work+0x1690/0x1690 [ 55.498091][ T4205] kthread+0x3b5/0x4a0 [ 55.498105][ T4205] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.498118][ T4205] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.498137][ T4205] ret_from_fork+0x1f/0x30 [ 55.501376][ T4205] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/4205 [ 55.501400][ T4205] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.501416][ T4205] CPU: 0 PID: 4205 Comm: kworker/u4:5 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 55.501424][ T4205] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.501437][ T4205] Workqueue: writeback wb_workfn (flush-8:0) [ 55.501448][ T4205] Call Trace: [ 55.501467][ T4205] dump_stack+0x18f/0x20d [ 55.501490][ T4205] check_preemption_disabled+0x20d/0x220 [ 55.501507][ T4205] ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.501523][ T4205] ? ext4_find_extent+0x81a/0xad0 [ 55.501543][ T4205] ? ext4_ext_search_right+0x2ca/0xb20 [ 55.501558][ T4205] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 55.501579][ T4205] ext4_ext_map_blocks+0x201b/0x33e0 [ 55.501603][ T4205] ? ext4_ext_release+0x10/0x10 [ 55.501640][ T4205] ? down_write_killable+0x170/0x170 [ 55.501655][ T4205] ? ext4_es_lookup_extent+0x41d/0xd10 [ 55.501681][ T4205] ext4_map_blocks+0x4cb/0x1640 [ 55.501706][ T4205] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 55.501731][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.501748][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.501764][ T4205] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 55.501783][ T4205] ext4_writepages+0x1ab5/0x3400 [ 55.501821][ T4205] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.501837][ T4205] ? __lock_acquire+0x2224/0x48b0 [ 55.501870][ T4205] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.501893][ T4205] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.501911][ T4205] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.501937][ T4205] ? do_writepages+0xfa/0x2a0 [ 55.501952][ T4205] do_writepages+0xfa/0x2a0 [ 55.501974][ T4205] ? page_writeback_cpu_online+0x10/0x10 [ 55.501998][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.502015][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.502030][ T4205] ? lock_downgrade+0x840/0x840 [ 55.502053][ T4205] __writeback_single_inode+0x12a/0x13d0 [ 55.502069][ T4205] ? _raw_spin_unlock+0x24/0x40 [ 55.502085][ T4205] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 55.502105][ T4205] writeback_sb_inodes+0x515/0xdc0 [ 55.502136][ T4205] ? __writeback_single_inode+0x13d0/0x13d0 [ 55.502176][ T4205] __writeback_inodes_wb+0xc3/0x250 [ 55.502201][ T4205] wb_writeback+0x8db/0xd50 [ 55.502234][ T4205] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 55.502256][ T4205] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 55.502277][ T4205] ? cpumask_next+0x3c/0x40 [ 55.502295][ T4205] ? get_nr_dirty_inodes+0xd6/0x130 [ 55.502318][ T4205] wb_workfn+0xab3/0x1090 [ 55.502343][ T4205] ? inode_wait_for_writeback+0x30/0x30 [ 55.502366][ T4205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.502383][ T4205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.502407][ T4205] process_one_work+0x965/0x1690 [ 55.502432][ T4205] ? lock_release+0x800/0x800 [ 55.502448][ T4205] ? pwq_dec_nr_in_flight+0x310/0x310 [ 55.502467][ T4205] ? rwlock_bug.part.0+0x90/0x90 [ 55.502493][ T4205] worker_thread+0x96/0xe10 [ 55.502522][ T4205] ? process_one_work+0x1690/0x1690 [ 55.502539][ T4205] kthread+0x3b5/0x4a0 [ 55.502551][ T4205] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.502562][ T4205] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.502580][ T4205] ret_from_fork+0x1f/0x30 Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.8' (ECDSA) to the list of known hosts. 2020/06/03 11:02:13 fuzzer started 2020/06/03 11:02:13 connecting to host at 10.128.0.26:37329 2020/06/03 11:02:13 checking machine... 2020/06/03 11:02:13 checking revisions... 2020/06/03 11:02:13 testing simple program... syzkaller login: [ 59.724366][ T6804] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6804 [ 59.733458][ T6804] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.739507][ T6804] CPU: 1 PID: 6804 Comm: syz-fuzzer Not tainted 5.7.0-next-20200603-syzkaller #0 [ 59.748606][ T6804] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.758648][ T6804] Call Trace: [ 59.761943][ T6804] dump_stack+0x18f/0x20d [ 59.766271][ T6804] check_preemption_disabled+0x20d/0x220 [ 59.771948][ T6804] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.777101][ T6804] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.782545][ T6804] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.788251][ T6804] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.793629][ T6804] ? ext4_ext_release+0x10/0x10 [ 59.798568][ T6804] ? down_write_killable+0x170/0x170 [ 59.803935][ T6804] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.809403][ T6804] ext4_map_blocks+0x4cb/0x1640 [ 59.814252][ T6804] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.819455][ T6804] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.824979][ T6804] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.830952][ T6804] ? prandom_u32_state+0xe/0x170 [ 59.835874][ T6804] ? __brelse+0x84/0xa0 [ 59.840012][ T6804] ? __ext4_new_inode+0x144/0x55e0 [ 59.845108][ T6804] ext4_getblk+0xad/0x520 [ 59.849457][ T6804] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.855157][ T6804] ? ext4_free_inode+0x1700/0x1700 [ 59.860308][ T6804] ext4_bread+0x7c/0x380 [ 59.864535][ T6804] ? ext4_getblk+0x520/0x520 [ 59.869109][ T6804] ? dquot_get_next_dqblk+0x180/0x180 [ 59.874471][ T6804] ext4_append+0x153/0x360 [ 59.878995][ T6804] ext4_mkdir+0x5e0/0xdf0 [ 59.883444][ T6804] ? ext4_rmdir+0xde0/0xde0 [ 59.887933][ T6804] ? security_inode_permission+0xc4/0xf0 [ 59.893550][ T6804] vfs_mkdir+0x419/0x690 [ 59.897816][ T6804] do_mkdirat+0x21e/0x280 [ 59.902164][ T6804] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.907010][ T6804] ? do_syscall_64+0x1c/0xe0 [ 59.911591][ T6804] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.917566][ T6804] do_syscall_64+0x60/0xe0 [ 59.922005][ T6804] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.927922][ T6804] RIP: 0033:0x4b02a0 [ 59.931793][ T6804] Code: Bad RIP value. [ 59.935867][ T6804] RSP: 002b:000000c0000c94b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 59.944271][ T6804] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 59.952248][ T6804] RDX: 00000000000001c0 RSI: 000000c0000d89c0 RDI: ffffffffffffff9c [ 59.960253][ T6804] RBP: 000000c0000c9510 R08: 0000000000000000 R09: 0000000000000000 [ 59.968224][ T6804] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 59.976214][ T6804] R13: 000000000000004f R14: 000000000000004e R15: 0000000000000100 [ 60.013930][ T6819] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6819 [ 60.023451][ T6819] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.029948][ T6819] CPU: 1 PID: 6819 Comm: syz-executor.0 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 60.041063][ T6819] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.051386][ T6819] Call Trace: [ 60.055838][ T6819] dump_stack+0x18f/0x20d [ 60.061146][ T6819] check_preemption_disabled+0x20d/0x220 [ 60.066903][ T6819] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.072016][ T6819] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.077514][ T6819] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.083246][ T6819] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.089282][ T6819] ? ext4_ext_release+0x10/0x10 [ 60.094123][ T6819] ? down_write_killable+0x170/0x170 [ 60.100646][ T6819] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.106112][ T6819] ext4_map_blocks+0x4cb/0x1640 [ 60.110945][ T6819] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.116473][ T6819] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.121996][ T6819] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.127951][ T6819] ? prandom_u32_state+0xe/0x170 [ 60.132952][ T6819] ? __brelse+0x84/0xa0 [ 60.137086][ T6819] ? __ext4_new_inode+0x144/0x55e0 [ 60.142177][ T6819] ext4_getblk+0xad/0x520 [ 60.146484][ T6819] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.152192][ T6819] ? ext4_free_inode+0x1700/0x1700 [ 60.157290][ T6819] ext4_bread+0x7c/0x380 [ 60.161509][ T6819] ? ext4_getblk+0x520/0x520 [ 60.166082][ T6819] ? dquot_get_next_dqblk+0x180/0x180 [ 60.171433][ T6819] ext4_append+0x153/0x360 [ 60.175827][ T6819] ext4_mkdir+0x5e0/0xdf0 [ 60.180138][ T6819] ? ext4_rmdir+0xde0/0xde0 [ 60.184621][ T6819] ? security_inode_permission+0xc4/0xf0 [ 60.190233][ T6819] vfs_mkdir+0x419/0x690 [ 60.194465][ T6819] do_mkdirat+0x21e/0x280 [ 60.198773][ T6819] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.204048][ T6819] ? do_syscall_64+0x1c/0xe0 [ 60.208625][ T6819] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.215046][ T6819] do_syscall_64+0x60/0xe0 [ 60.219442][ T6819] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.225307][ T6819] RIP: 0033:0x45bee7 [ 60.229178][ T6819] Code: Bad RIP value. [ 60.233218][ T6819] RSP: 002b:00007ffe9b5ce328 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 60.241610][ T6819] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 60.249558][ T6819] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffe9b5ce500 [ 60.257512][ T6819] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002c80 [ 60.265552][ T6819] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 60.273513][ T6819] R13: 00007ffe9b5ce500 R14: 8421084210842109 R15: 00007ffe9b5ce50c [ 60.357020][ T6820] IPVS: ftp: loaded support on port[0] = 21 [ 60.394349][ T6820] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6820 [ 60.404520][ T6820] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.410489][ T6820] CPU: 1 PID: 6820 Comm: syz-executor.0 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 60.419936][ T6820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.430489][ T6820] Call Trace: [ 60.433774][ T6820] dump_stack+0x18f/0x20d [ 60.438092][ T6820] check_preemption_disabled+0x20d/0x220 [ 60.443704][ T6820] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.450632][ T6820] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.456076][ T6820] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.461776][ T6820] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.467053][ T6820] ? ext4_ext_release+0x10/0x10 [ 60.471894][ T6820] ? down_write_killable+0x170/0x170 [ 60.477156][ T6820] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.482618][ T6820] ext4_map_blocks+0x4cb/0x1640 [ 60.487537][ T6820] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.492721][ T6820] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.498864][ T6820] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.504818][ T6820] ? prandom_u32_state+0xe/0x170 [ 60.509734][ T6820] ? __brelse+0x84/0xa0 [ 60.513867][ T6820] ? __ext4_new_inode+0x144/0x55e0 [ 60.519044][ T6820] ext4_getblk+0xad/0x520 [ 60.523361][ T6820] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.529086][ T6820] ? ext4_free_inode+0x1700/0x1700 [ 60.534184][ T6820] ext4_bread+0x7c/0x380 [ 60.538491][ T6820] ? ext4_getblk+0x520/0x520 [ 60.543176][ T6820] ? dquot_get_next_dqblk+0x180/0x180 [ 60.548536][ T6820] ext4_append+0x153/0x360 [ 60.552943][ T6820] ext4_mkdir+0x5e0/0xdf0 [ 60.557271][ T6820] ? ext4_rmdir+0xde0/0xde0 [ 60.561769][ T6820] ? security_inode_permission+0xc4/0xf0 [ 60.567392][ T6820] vfs_mkdir+0x419/0x690 [ 60.574651][ T6820] do_mkdirat+0x21e/0x280 [ 60.578960][ T6820] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.583789][ T6820] ? do_syscall_64+0x1c/0xe0 [ 60.588355][ T6820] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.594320][ T6820] do_syscall_64+0x60/0xe0 [ 60.598738][ T6820] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.604623][ T6820] RIP: 0033:0x45bee7 [ 60.608500][ T6820] Code: Bad RIP value. [ 60.612589][ T6820] RSP: 002b:00007ffe9b5ce218 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 60.620980][ T6820] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 60.628939][ T6820] RDX: 00007ffe9b5ce263 RSI: 00000000000001ff RDI: 00007ffe9b5ce260 [ 60.636896][ T6820] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 60.644851][ T6820] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 60.652813][ T6820] R13: 00007ffe9b5ce250 R14: 0000000000000000 R15: 00007ffe9b5ce260 [ 60.725211][ T6820] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6820 [ 60.734747][ T6820] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.740750][ T6820] CPU: 1 PID: 6820 Comm: syz-executor.0 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 60.750207][ T6820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.760268][ T6820] Call Trace: [ 60.763567][ T6820] dump_stack+0x18f/0x20d [ 60.767894][ T6820] check_preemption_disabled+0x20d/0x220 [ 60.773508][ T6820] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.778806][ T6820] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.784282][ T6820] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.789989][ T6820] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.795272][ T6820] ? ext4_ext_release+0x10/0x10 [ 60.800112][ T6820] ? down_write_killable+0x170/0x170 [ 60.805378][ T6820] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.810821][ T6820] ext4_map_blocks+0x4cb/0x1640 [ 60.815651][ T6820] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.820840][ T6820] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.826360][ T6820] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.832528][ T6820] ? prandom_u32_state+0xe/0x170 [ 60.837487][ T6820] ? __brelse+0x84/0xa0 [ 60.841736][ T6820] ? __ext4_new_inode+0x144/0x55e0 [ 60.846853][ T6820] ext4_getblk+0xad/0x520 [ 60.851223][ T6820] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.857008][ T6820] ? ext4_free_inode+0x1700/0x1700 [ 60.862126][ T6820] ext4_bread+0x7c/0x380 [ 60.866354][ T6820] ? ext4_getblk+0x520/0x520 [ 60.871037][ T6820] ? dquot_get_next_dqblk+0x180/0x180 [ 60.876407][ T6820] ext4_append+0x153/0x360 [ 60.880827][ T6820] ext4_mkdir+0x5e0/0xdf0 [ 60.885154][ T6820] ? ext4_rmdir+0xde0/0xde0 [ 60.889639][ T6820] ? security_inode_permission+0xc4/0xf0 [ 60.895254][ T6820] vfs_mkdir+0x419/0x690 [ 60.899502][ T6820] do_mkdirat+0x21e/0x280 [ 60.904244][ T6820] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.909132][ T6820] ? do_syscall_64+0x1c/0xe0 [ 60.913846][ T6820] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.919840][ T6820] do_syscall_64+0x60/0xe0 [ 60.924245][ T6820] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.930139][ T6820] RIP: 0033:0x45bee7 [ 60.934007][ T6820] Code: Bad RIP value. [ 60.938074][ T6820] RSP: 002b:00007ffe9b5ce218 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 60.946461][ T6820] RAX: ffffffffffffffda RBX: 000000000000ed1c RCX: 000000000045bee7 [ 60.954416][ T6820] RDX: 00007ffe9b5ce263 RSI: 00000000000001ff RDI: 00007ffe9b5ce260 [ 60.962378][ T6820] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 60.970336][ T6820] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 60.978285][ T6820] R13: 00007ffe9b5ce250 R14: 000000000000ed0a R15: 00007ffe9b5ce260 2020/06/03 11:02:15 building call list... [ 61.207084][ T4205] tipc: TX() has been purged, node left! executing program [ 62.754988][ T6801] can: request_module (can-proto-0) failed. [ 63.272142][ T6801] can: request_module (can-proto-0) failed. [ 63.283428][ T6801] can: request_module (can-proto-0) failed.