[ 243.738467][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 243.738467][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 243.738467][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 243.738467][ T37] ? do_writepages+0xfa/0x2a0 [ 243.738467][ T37] do_writepages+0xfa/0x2a0 [ 243.738467][ T37] ? page_writeback_cpu_online+0x10/0x10 [ 243.738467][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 243.738467][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 243.738467][ T37] __writeback_single_inode+0x12a/0x13d0 [ 243.738467][ T37] ? _raw_spin_unlock+0x24/0x40 [ 243.738467][ T37] ? wbc_attach_and_unlock_inode+0x545/0x9c0 [ 243.738467][ T37] writeback_sb_inodes+0x515/0xdc0 [ 243.738467][ T37] ? __writeback_single_inode+0x13d0/0x13d0 [ 243.738467][ T37] __writeback_inodes_wb+0xc3/0x250 [ 243.738467][ T37] wb_writeback+0x8db/0xd50 [ 243.738467][ T37] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 243.738467][ T37] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 243.738467][ T37] ? cpumask_next+0x3c/0x40 [ 243.738467][ T37] ? get_nr_dirty_inodes+0xd6/0x130 [ 243.738467][ T37] wb_workfn+0xab3/0x1090 [ 243.738467][ T37] ? inode_wait_for_writeback+0x30/0x30 [ 243.738467][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 243.738467][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 243.738467][ T37] process_one_work+0x965/0x1690 [ 243.738467][ T37] ? lock_release+0x800/0x800 [ 243.738467][ T37] ? pwq_dec_nr_in_flight+0x310/0x310 [ 243.738467][ T37] ? rwlock_bug.part.0+0x90/0x90 [ 243.738467][ T37] worker_thread+0x96/0xe10 [ 244.328463][ T37] ? process_one_work+0x1690/0x1690 [ 244.328463][ T37] kthread+0x3b5/0x4a0 [ 244.328463][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 244.328463][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 244.328463][ T37] ret_from_fork+0x1f/0x30 [ 244.371181][ T37] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u17:2/37 [ 244.535713][ T37] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 244.535821][ T37] CPU: 1 PID: 37 Comm: kworker/u17:2 Not tainted 5.7.0-syzkaller #0 [ 244.584136][ T37] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 244.584136][ T37] Workqueue: writeback wb_workfn (flush-8:0) [ 244.584136][ T37] Call Trace: [ 244.584136][ T37] dump_stack+0x18f/0x20d [ 244.584136][ T37] check_preemption_disabled+0x20d/0x220 [ 244.584136][ T37] ext4_mb_new_blocks+0xa4d/0x3b70 [ 244.584136][ T37] ? ext4_find_extent+0x81a/0xad0 [ 244.584136][ T37] ? ext4_ext_search_right+0x2ca/0xb20 [ 245.019114][ T37] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 245.019114][ T37] ext4_ext_map_blocks+0x201b/0x33e0 [ 245.019114][ T37] ? ext4_ext_release+0x10/0x10 [ 245.019114][ T37] ? down_write_killable+0x170/0x170 [ 245.019114][ T37] ? ext4_es_lookup_extent+0x41d/0xd10 [ 245.019114][ T37] ext4_map_blocks+0x4cb/0x1640 [ 245.019114][ T37] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 245.019114][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 245.019114][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 245.019114][ T37] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 245.019114][ T37] ext4_writepages+0x1a7b/0x33c0 [ 245.019114][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 245.019114][ T37] ? __lock_acquire+0x2224/0x48b0 [ 245.910196][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 245.910196][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 245.910196][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 245.910196][ T37] ? do_writepages+0xfa/0x2a0 [ 245.910196][ T37] do_writepages+0xfa/0x2a0 [ 245.910196][ T37] ? page_writeback_cpu_online+0x10/0x10 [ 245.910196][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 245.910196][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 245.910196][ T37] __writeback_single_inode+0x12a/0x13d0 [ 245.910196][ T37] ? _raw_spin_unlock+0x24/0x40 [ 245.910196][ T37] ? wbc_attach_and_unlock_inode+0x545/0x9c0 [ 245.910196][ T37] writeback_sb_inodes+0x515/0xdc0 [ 245.910196][ T37] ? __writeback_single_inode+0x13d0/0x13d0 [ 245.910196][ T37] __writeback_inodes_wb+0xc3/0x250 [ 245.910196][ T37] wb_writeback+0x8db/0xd50 [ 245.910196][ T37] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 245.910196][ T37] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 245.910196][ T37] ? cpumask_next+0x3c/0x40 [ 245.910196][ T37] ? get_nr_dirty_inodes+0xd6/0x130 [ 245.910196][ T37] wb_workfn+0xab3/0x1090 [ 245.910196][ T37] ? inode_wait_for_writeback+0x30/0x30 [ 245.910196][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 245.910196][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 245.910196][ T37] process_one_work+0x965/0x1690 [ 245.910196][ T37] ? lock_release+0x800/0x800 [ 245.910196][ T37] ? pwq_dec_nr_in_flight+0x310/0x310 [ 245.910196][ T37] ? rwlock_bug.part.0+0x90/0x90 [ 245.910196][ T37] worker_thread+0x96/0xe10 [ 245.910196][ T37] ? process_one_work+0x1690/0x1690 [ 245.910196][ T37] kthread+0x3b5/0x4a0 [ 245.910196][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 245.910196][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 245.910196][ T37] ret_from_fork+0x1f/0x30 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 251.565015][ T37] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u17:2/37 [ 251.645738][ T37] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 251.699185][ T37] CPU: 1 PID: 37 Comm: kworker/u17:2 Not tainted 5.7.0-syzkaller #0 [ 251.769512][ T37] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 251.783743][ T37] Workqueue: writeback wb_workfn (flush-8:0) [ 251.783743][ T37] Call Trace: [ 251.783743][ T37] dump_stack+0x18f/0x20d [ 251.783743][ T37] check_preemption_disabled+0x20d/0x220 [ 251.783743][ T37] ext4_mb_new_blocks+0xa4d/0x3b70 [ 251.783743][ T37] ? ext4_find_extent+0x81a/0xad0 [ 251.783743][ T37] ? ext4_ext_search_right+0x2ca/0xb20 [ 251.783743][ T37] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 251.783743][ T37] ext4_ext_map_blocks+0x201b/0x33e0 [ 251.783743][ T37] ? ext4_ext_release+0x10/0x10 [ 251.783743][ T37] ? down_write_killable+0x170/0x170 [ 251.783743][ T37] ? ext4_es_lookup_extent+0x41d/0xd10 [ 251.783743][ T37] ext4_map_blocks+0x4cb/0x1640 [ 251.783743][ T37] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 251.783743][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 251.783743][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 251.783743][ T37] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 251.783743][ T37] ext4_writepages+0x1a7b/0x33c0 [ 251.783743][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 251.783743][ T37] ? __lock_acquire+0x2224/0x48b0 [ 251.783743][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 252.679414][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 252.679414][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 252.679414][ T37] ? do_writepages+0xfa/0x2a0 [ 252.679414][ T37] do_writepages+0xfa/0x2a0 [ 252.679414][ T37] ? page_writeback_cpu_online+0x10/0x10 [ 252.679414][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 252.679414][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 252.679414][ T37] __writeback_single_inode+0x12a/0x13d0 [ 252.679414][ T37] ? _raw_spin_unlock+0x24/0x40 [ 252.679414][ T37] ? wbc_attach_and_unlock_inode+0x545/0x9c0 [ 252.679414][ T37] writeback_sb_inodes+0x515/0xdc0 [ 252.679414][ T37] ? __writeback_single_inode+0x13d0/0x13d0 [ 252.679414][ T37] __writeback_inodes_wb+0xc3/0x250 [ 252.679414][ T37] wb_writeback+0x8db/0xd50 [ 252.679414][ T37] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 252.679414][ T37] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 252.679414][ T37] ? cpumask_next+0x3c/0x40 [ 252.679414][ T37] ? get_nr_dirty_inodes+0xd6/0x130 [ 252.679414][ T37] wb_workfn+0xab3/0x1090 [ 252.679414][ T37] ? inode_wait_for_writeback+0x30/0x30 [ 252.679414][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 252.679414][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 252.679414][ T37] process_one_work+0x965/0x1690 [ 252.679414][ T37] ? lock_release+0x800/0x800 [ 252.679414][ T37] ? pwq_dec_nr_in_flight+0x310/0x310 [ 252.679414][ T37] ? rwlock_bug.part.0+0x90/0x90 [ 252.679414][ T37] worker_thread+0x96/0xe10 [ 252.679414][ T37] ? process_one_work+0x1690/0x1690 [ 252.679414][ T37] kthread+0x3b5/0x4a0 [ 252.679414][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 252.679414][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 252.679414][ T37] ret_from_fork+0x1f/0x30 [ 253.939993][ T37] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u17:2/37 [ 254.040267][ T37] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 254.112133][ T37] CPU: 1 PID: 37 Comm: kworker/u17:2 Not tainted 5.7.0-syzkaller #0 [ 254.120528][ T37] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 254.120528][ T37] Workqueue: writeback wb_workfn (flush-8:0) [ 254.120528][ T37] Call Trace: [ 254.120528][ T37] dump_stack+0x18f/0x20d [ 254.120528][ T37] check_preemption_disabled+0x20d/0x220 [ 254.120528][ T37] ext4_mb_new_blocks+0xa4d/0x3b70 [ 254.120528][ T37] ? ext4_find_extent+0x81a/0xad0 [ 254.120528][ T37] ? ext4_ext_search_right+0x2ca/0xb20 [ 254.120528][ T37] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 254.757507][ T37] ext4_ext_map_blocks+0x201b/0x33e0 [ 254.757507][ T37] ? ext4_ext_release+0x10/0x10 [ 254.757507][ T37] ? down_write_killable+0x170/0x170 [ 254.757507][ T37] ? ext4_es_lookup_extent+0x41d/0xd10 [ 254.757507][ T37] ext4_map_blocks+0x4cb/0x1640 [ 254.757507][ T37] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 254.757507][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 254.757507][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 254.757507][ T37] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 254.757507][ T37] ext4_writepages+0x1a7b/0x33c0 [ 254.757507][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 254.757507][ T37] ? __lock_acquire+0x2224/0x48b0 [ 254.757507][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 254.757507][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 254.757507][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 254.757507][ T37] ? do_writepages+0xfa/0x2a0 [ 254.757507][ T37] do_writepages+0xfa/0x2a0 [ 254.757507][ T37] ? page_writeback_cpu_online+0x10/0x10 [ 254.757507][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 254.757507][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 254.757507][ T37] __writeback_single_inode+0x12a/0x13d0 [ 254.757507][ T37] ? _raw_spin_unlock+0x24/0x40 [ 254.757507][ T37] ? wbc_attach_and_unlock_inode+0x545/0x9c0 [ 254.757507][ T37] writeback_sb_inodes+0x515/0xdc0 [ 254.757507][ T37] ? __writeback_single_inode+0x13d0/0x13d0 [ 254.757507][ T37] __writeback_inodes_wb+0xc3/0x250 [ 254.757507][ T37] wb_writeback+0x8db/0xd50 [ 254.757507][ T37] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 254.757507][ T37] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 254.757507][ T37] ? cpumask_next+0x3c/0x40 [ 254.757507][ T37] ? get_nr_dirty_inodes+0xd6/0x130 [ 254.757507][ T37] wb_workfn+0xab3/0x1090 [ 254.757507][ T37] ? inode_wait_for_writeback+0x30/0x30 [ 254.757507][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 254.757507][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 254.757507][ T37] process_one_work+0x965/0x1690 [ 254.757507][ T37] ? lock_release+0x800/0x800 [ 254.757507][ T37] ? pwq_dec_nr_in_flight+0x310/0x310 [ 254.757507][ T37] ? rwlock_bug.part.0+0x90/0x90 [ 254.757507][ T37] worker_thread+0x96/0xe10 [ 254.757507][ T37] ? process_one_work+0x1690/0x1690 [ 254.757507][ T37] kthread+0x3b5/0x4a0 [ 254.757507][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 254.757507][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 254.757507][ T37] ret_from_fork+0x1f/0x30 [ 262.458995][ T37] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u17:2/37 [ 262.538734][ T37] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 262.590529][ T37] CPU: 2 PID: 37 Comm: kworker/u17:2 Not tainted 5.7.0-syzkaller #0 [ 262.668904][ T37] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 262.779021][ T37] Workqueue: writeback wb_workfn (flush-8:0) [ 262.828491][ T37] Call Trace: [ 262.848499][ T37] dump_stack+0x18f/0x20d [ 262.889424][ T37] check_preemption_disabled+0x20d/0x220 [ 262.938628][ T37] ext4_mb_new_blocks+0xa4d/0x3b70 [ 262.968582][ T37] ? ext4_ext_search_right+0x2ca/0xb20 [ 263.009223][ T37] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 263.058943][ T37] ext4_ext_map_blocks+0x201b/0x33e0 [ 263.108649][ T37] ? ext4_ext_release+0x10/0x10 [ 263.148651][ T37] ? down_write_killable+0x170/0x170 [ 263.218728][ T37] ? ext4_es_lookup_extent+0x41d/0xd10 [ 263.278948][ T37] ext4_map_blocks+0x4cb/0x1640 [ 263.338927][ T37] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 263.378761][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 263.450427][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 263.510384][ T37] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 263.578914][ T37] ext4_writepages+0x1a7b/0x33c0 [ 263.629315][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 263.668999][ T37] ? __lock_acquire+0x2224/0x48b0 [ 263.711998][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 263.748972][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 263.789408][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 263.819310][ T37] ? do_writepages+0xfa/0x2a0 [ 263.858553][ T37] do_writepages+0xfa/0x2a0 [ 263.903317][ T37] ? page_writeback_cpu_online+0x10/0x10 [ 263.968474][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 264.028856][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 264.088684][ T37] __writeback_single_inode+0x12a/0x13d0 [ 264.160632][ T37] ? _raw_spin_unlock+0x24/0x40 [ 264.218693][ T37] ? wbc_attach_and_unlock_inode+0x545/0x9c0 [ 264.258654][ T37] writeback_sb_inodes+0x515/0xdc0 [ 264.279027][ T37] ? __writeback_single_inode+0x13d0/0x13d0 [ 264.308454][ T37] __writeback_inodes_wb+0xc3/0x250 [ 264.338248][ T37] wb_writeback+0x8db/0xd50 [ 264.358472][ T37] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 264.378456][ T37] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 264.398878][ T37] ? cpumask_next+0x3c/0x40 [ 264.418478][ T37] ? get_nr_dirty_inodes+0xd6/0x130 [ 264.448899][ T37] wb_workfn+0xab3/0x1090 [ 264.488737][ T37] ? inode_wait_for_writeback+0x30/0x30 [ 264.529695][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 264.579130][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 264.618681][ T37] process_one_work+0x965/0x1690 [ 264.658730][ T37] ? lock_release+0x800/0x800 [ 264.689524][ T37] ? pwq_dec_nr_in_flight+0x310/0x310 [ 264.728528][ T37] ? rwlock_bug.part.0+0x90/0x90 [ 264.759140][ T37] worker_thread+0x96/0xe10 [ 264.799026][ T37] ? process_one_work+0x1690/0x1690 [ 264.858737][ T37] kthread+0x3b5/0x4a0 [ 264.898519][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 264.948505][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 264.978529][ T37] ret_from_fork+0x1f/0x30 [ 265.084124][ T37] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u17:2/37 [ 265.157285][ T37] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 265.203436][ T37] CPU: 0 PID: 37 Comm: kworker/u17:2 Not tainted 5.7.0-syzkaller #0 [ 265.212597][ T37] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 265.212597][ T37] Workqueue: writeback wb_workfn (flush-8:0) [ 265.212597][ T37] Call Trace: [ 265.212597][ T37] dump_stack+0x18f/0x20d [ 265.212597][ T37] check_preemption_disabled+0x20d/0x220 [ 265.212597][ T37] ext4_mb_new_blocks+0xa4d/0x3b70 [ 265.212597][ T37] ? ext4_find_extent+0x81a/0xad0 [ 265.448547][ T37] ? ext4_ext_search_right+0x2ca/0xb20 [ 265.468410][ T37] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 265.488755][ T37] ext4_ext_map_blocks+0x201b/0x33e0 [ 265.508357][ T37] ? ext4_ext_release+0x10/0x10 [ 265.548907][ T37] ? down_write_killable+0x170/0x170 [ 265.578720][ T37] ? ext4_es_lookup_extent+0x41d/0xd10 [ 265.618642][ T37] ext4_map_blocks+0x4cb/0x1640 [ 265.638382][ T37] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 265.668659][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 265.688467][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 265.728387][ T37] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 265.748407][ T37] ext4_writepages+0x1a7b/0x33c0 [ 265.758483][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 265.788407][ T37] ? __lock_acquire+0x2224/0x48b0 [ 265.818158][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 265.848424][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 265.878278][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 265.908471][ T37] ? do_writepages+0xfa/0x2a0 [ 265.938690][ T37] do_writepages+0xfa/0x2a0 [ 265.968242][ T37] ? page_writeback_cpu_online+0x10/0x10 [ 265.988679][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 266.018250][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 266.048718][ T37] __writeback_single_inode+0x12a/0x13d0 [ 266.078536][ T37] ? _raw_spin_unlock+0x24/0x40 [ 266.108599][ T37] ? wbc_attach_and_unlock_inode+0x545/0x9c0 [ 266.148767][ T37] writeback_sb_inodes+0x515/0xdc0 [ 266.168425][ T37] ? __writeback_single_inode+0x13d0/0x13d0 [ 266.168425][ T37] __writeback_inodes_wb+0xc3/0x250 [ 266.198483][ T37] wb_writeback+0x8db/0xd50 [ 266.218529][ T37] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 266.248492][ T37] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 266.258285][ T37] ? cpumask_next+0x3c/0x40 [ 266.278349][ T37] ? get_nr_dirty_inodes+0xd6/0x130 [ 266.298354][ T37] wb_workfn+0xab3/0x1090 [ 266.298354][ T37] ? inode_wait_for_writeback+0x30/0x30 [ 266.318207][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 266.338236][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 266.348208][ T37] process_one_work+0x965/0x1690 [ 266.368238][ T37] ? lock_release+0x800/0x800 [ 266.388181][ T37] ? pwq_dec_nr_in_flight+0x310/0x310 [ 266.398260][ T37] ? rwlock_bug.part.0+0x90/0x90 [ 266.428298][ T37] worker_thread+0x96/0xe10 [ 266.448472][ T37] ? process_one_work+0x1690/0x1690 [ 266.478216][ T37] kthread+0x3b5/0x4a0 [ 266.498495][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 266.508624][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 266.548471][ T37] ret_from_fork+0x1f/0x30 [ 266.661537][ T37] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u17:2/37 [ 266.731927][ T37] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 266.763397][ T37] CPU: 3 PID: 37 Comm: kworker/u17:2 Not tainted 5.7.0-syzkaller #0 [ 266.778638][ T37] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 266.778638][ T37] Workqueue: writeback wb_workfn (flush-8:0) [ 266.778638][ T37] Call Trace: [ 266.778638][ T37] dump_stack+0x18f/0x20d [ 266.778638][ T37] check_preemption_disabled+0x20d/0x220 [ 266.908227][ T37] ext4_mb_new_blocks+0xa4d/0x3b70 [ 266.918335][ T37] ? ext4_ext_search_right+0x2ca/0xb20 [ 266.918335][ T37] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 266.918335][ T37] ext4_ext_map_blocks+0x201b/0x33e0 [ 266.918335][ T37] ? ext4_ext_release+0x10/0x10 [ 266.918335][ T37] ? down_write_killable+0x170/0x170 [ 266.918335][ T37] ? ext4_es_lookup_extent+0x41d/0xd10 [ 266.918335][ T37] ext4_map_blocks+0x4cb/0x1640 [ 266.918335][ T37] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 266.918335][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 266.918335][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 266.918335][ T37] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 266.918335][ T37] ext4_writepages+0x1a7b/0x33c0 [ 266.918335][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 266.918335][ T37] ? __lock_acquire+0x2224/0x48b0 [ 267.208389][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 267.219400][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 267.219400][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 267.219400][ T37] ? do_writepages+0xfa/0x2a0 [ 267.219400][ T37] do_writepages+0xfa/0x2a0 [ 267.219400][ T37] ? page_writeback_cpu_online+0x10/0x10 [ 267.219400][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 267.219400][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 267.219400][ T37] __writeback_single_inode+0x12a/0x13d0 [ 267.219400][ T37] ? _raw_spin_unlock+0x24/0x40 [ 267.219400][ T37] ? wbc_attach_and_unlock_inode+0x545/0x9c0 [ 267.219400][ T37] writeback_sb_inodes+0x515/0xdc0 [ 267.219400][ T37] ? __writeback_single_inode+0x13d0/0x13d0 [ 267.219400][ T37] __writeback_inodes_wb+0xc3/0x250 [ 267.219400][ T37] wb_writeback+0x8db/0xd50 [ 267.219400][ T37] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 267.219400][ T37] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 267.219400][ T37] ? cpumask_next+0x3c/0x40 [ 267.219400][ T37] ? get_nr_dirty_inodes+0xd6/0x130 [ 267.219400][ T37] wb_workfn+0xab3/0x1090 [ 267.219400][ T37] ? inode_wait_for_writeback+0x30/0x30 [ 267.219400][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 267.219400][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 267.219400][ T37] process_one_work+0x965/0x1690 [ 267.219400][ T37] ? lock_release+0x800/0x800 [ 267.219400][ T37] ? pwq_dec_nr_in_flight+0x310/0x310 [ 267.219400][ T37] ? rwlock_bug.part.0+0x90/0x90 [ 267.219400][ T37] worker_thread+0x96/0xe10 [ 267.219400][ T37] ? process_one_work+0x1690/0x1690 [ 267.219400][ T37] kthread+0x3b5/0x4a0 [ 267.219400][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 267.219400][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 267.219400][ T37] ret_from_fork+0x1f/0x30 [ 267.802808][ T37] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u17:2/37 [ 267.847119][ T37] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 267.874546][ T37] CPU: 2 PID: 37 Comm: kworker/u17:2 Not tainted 5.7.0-syzkaller #0 [ 267.884197][ T37] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 267.884197][ T37] Workqueue: writeback wb_workfn (flush-8:0) [ 267.884197][ T37] Call Trace: [ 267.884197][ T37] dump_stack+0x18f/0x20d [ 267.884197][ T37] check_preemption_disabled+0x20d/0x220 [ 267.884197][ T37] ext4_mb_new_blocks+0xa4d/0x3b70 [ 267.884197][ T37] ? ext4_ext_search_right+0x2ca/0xb20 [ 267.884197][ T37] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 267.884197][ T37] ext4_ext_map_blocks+0x201b/0x33e0 [ 267.884197][ T37] ? ext4_ext_release+0x10/0x10 [ 267.884197][ T37] ? down_write_killable+0x170/0x170 [ 267.884197][ T37] ? ext4_es_lookup_extent+0x41d/0xd10 [ 267.884197][ T37] ext4_map_blocks+0x4cb/0x1640 [ 267.884197][ T37] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 267.884197][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 267.884197][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 267.884197][ T37] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 267.884197][ T37] ext4_writepages+0x1a7b/0x33c0 [ 267.884197][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 267.884197][ T37] ? __lock_acquire+0x2224/0x48b0 [ 267.884197][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 267.884197][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 267.884197][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 267.884197][ T37] ? do_writepages+0xfa/0x2a0 [ 267.884197][ T37] do_writepages+0xfa/0x2a0 [ 267.884197][ T37] ? page_writeback_cpu_online+0x10/0x10 [ 267.884197][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 267.884197][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 267.884197][ T37] __writeback_single_inode+0x12a/0x13d0 [ 267.884197][ T37] ? _raw_spin_unlock+0x24/0x40 [ 267.884197][ T37] ? wbc_attach_and_unlock_inode+0x545/0x9c0 [ 267.884197][ T37] writeback_sb_inodes+0x515/0xdc0 [ 267.884197][ T37] ? __writeback_single_inode+0x13d0/0x13d0 [ 267.884197][ T37] __writeback_inodes_wb+0xc3/0x250 [ 267.884197][ T37] wb_writeback+0x8db/0xd50 [ 267.884197][ T37] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 267.884197][ T37] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 268.748565][ T37] ? cpumask_next+0x3c/0x40 [ 268.748565][ T37] ? get_nr_dirty_inodes+0xd6/0x130 [ 268.748565][ T37] wb_workfn+0xab3/0x1090 [ 268.748565][ T37] ? inode_wait_for_writeback+0x30/0x30 [ 268.748565][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 268.748565][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 268.748565][ T37] process_one_work+0x965/0x1690 [ 268.748565][ T37] ? lock_release+0x800/0x800 [ 268.748565][ T37] ? pwq_dec_nr_in_flight+0x310/0x310 [ 268.748565][ T37] ? rwlock_bug.part.0+0x90/0x90 [ 268.748565][ T37] worker_thread+0x96/0xe10 [ 268.748565][ T37] ? process_one_work+0x1690/0x1690 [ 268.748565][ T37] kthread+0x3b5/0x4a0 [ 268.748565][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 268.748565][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 268.748565][ T37] ret_from_fork+0x1f/0x30 [ 268.943731][ T37] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u17:2/37 [ 268.968537][ T37] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 268.993511][ T37] CPU: 2 PID: 37 Comm: kworker/u17:2 Not tainted 5.7.0-syzkaller #0 [ 269.003130][ T37] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 269.003130][ T37] Workqueue: writeback wb_workfn (flush-8:0) [ 269.003130][ T37] Call Trace: [ 269.003130][ T37] dump_stack+0x18f/0x20d [ 269.003130][ T37] check_preemption_disabled+0x20d/0x220 [ 269.003130][ T37] ext4_mb_new_blocks+0xa4d/0x3b70 [ 269.003130][ T37] ? ext4_ext_search_right+0x2ca/0xb20 [ 269.003130][ T37] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 269.003130][ T37] ext4_ext_map_blocks+0x201b/0x33e0 [ 269.003130][ T37] ? ext4_ext_release+0x10/0x10 [ 269.003130][ T37] ? down_write_killable+0x170/0x170 [ 269.003130][ T37] ? ext4_es_lookup_extent+0x41d/0xd10 [ 269.003130][ T37] ext4_map_blocks+0x4cb/0x1640 [ 269.003130][ T37] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 269.003130][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 269.003130][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 269.003130][ T37] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 269.003130][ T37] ext4_writepages+0x1a7b/0x33c0 [ 269.003130][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 269.003130][ T37] ? __lock_acquire+0x2224/0x48b0 [ 269.003130][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 269.003130][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 269.003130][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 269.003130][ T37] ? do_writepages+0xfa/0x2a0 [ 269.003130][ T37] do_writepages+0xfa/0x2a0 [ 269.003130][ T37] ? page_writeback_cpu_online+0x10/0x10 [ 269.003130][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 269.003130][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 269.003130][ T37] __writeback_single_inode+0x12a/0x13d0 [ 269.003130][ T37] ? _raw_spin_unlock+0x24/0x40 [ 269.003130][ T37] ? wbc_attach_and_unlock_inode+0x545/0x9c0 [ 269.003130][ T37] writeback_sb_inodes+0x515/0xdc0 [ 269.003130][ T37] ? __writeback_single_inode+0x13d0/0x13d0 [ 269.003130][ T37] __writeback_inodes_wb+0xc3/0x250 [ 269.003130][ T37] wb_writeback+0x8db/0xd50 [ 269.003130][ T37] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 269.003130][ T37] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 269.003130][ T37] ? cpumask_next+0x3c/0x40 [ 269.003130][ T37] ? get_nr_dirty_inodes+0xd6/0x130 [ 269.003130][ T37] wb_workfn+0xab3/0x1090 [ 269.003130][ T37] ? inode_wait_for_writeback+0x30/0x30 [ 269.003130][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 269.003130][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 269.003130][ T37] process_one_work+0x965/0x1690 [ 269.003130][ T37] ? lock_release+0x800/0x800 [ 269.003130][ T37] ? pwq_dec_nr_in_flight+0x310/0x310 [ 269.003130][ T37] ? rwlock_bug.part.0+0x90/0x90 [ 269.003130][ T37] worker_thread+0x96/0xe10 [ 269.003130][ T37] ? process_one_work+0x1690/0x1690 [ 269.003130][ T37] kthread+0x3b5/0x4a0 [ 269.003130][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 269.003130][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 269.003130][ T37] ret_from_fork+0x1f/0x30 [ 270.293963][ T37] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u17:2/37 [ 270.337515][ T37] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 270.363910][ T37] CPU: 2 PID: 37 Comm: kworker/u17:2 Not tainted 5.7.0-syzkaller #0 [ 270.373367][ T37] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 270.373367][ T37] Workqueue: writeback wb_workfn (flush-8:0) [ 270.373367][ T37] Call Trace: [ 270.373367][ T37] dump_stack+0x18f/0x20d [ 270.373367][ T37] check_preemption_disabled+0x20d/0x220 [ 270.373367][ T37] ext4_mb_new_blocks+0xa4d/0x3b70 [ 270.373367][ T37] ? ext4_ext_search_right+0x2ca/0xb20 [ 270.373367][ T37] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 270.373367][ T37] ext4_ext_map_blocks+0x201b/0x33e0 [ 270.373367][ T37] ? ext4_ext_release+0x10/0x10 [ 270.373367][ T37] ? down_write_killable+0x170/0x170 [ 270.373367][ T37] ? ext4_es_lookup_extent+0x41d/0xd10 [ 270.373367][ T37] ext4_map_blocks+0x4cb/0x1640 [ 270.373367][ T37] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 270.373367][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 270.373367][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 270.373367][ T37] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 270.373367][ T37] ext4_writepages+0x1a7b/0x33c0 [ 270.373367][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 270.373367][ T37] ? __lock_acquire+0x2224/0x48b0 [ 270.373367][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 270.373367][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 270.373367][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 270.373367][ T37] ? do_writepages+0xfa/0x2a0 [ 270.373367][ T37] do_writepages+0xfa/0x2a0 [ 270.373367][ T37] ? page_writeback_cpu_online+0x10/0x10 [ 270.373367][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 270.373367][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 270.373367][ T37] __writeback_single_inode+0x12a/0x13d0 [ 270.373367][ T37] ? _raw_spin_unlock+0x24/0x40 [ 270.373367][ T37] ? wbc_attach_and_unlock_inode+0x545/0x9c0 [ 270.373367][ T37] writeback_sb_inodes+0x515/0xdc0 [ 270.373367][ T37] ? __writeback_single_inode+0x13d0/0x13d0 [ 270.373367][ T37] __writeback_inodes_wb+0xc3/0x250 [ 270.373367][ T37] wb_writeback+0x8db/0xd50 [ 270.373367][ T37] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 270.373367][ T37] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 270.373367][ T37] ? cpumask_next+0x3c/0x40 [ 270.373367][ T37] ? get_nr_dirty_inodes+0xd6/0x130 [ 270.373367][ T37] wb_workfn+0xab3/0x1090 [ 270.373367][ T37] ? inode_wait_for_writeback+0x30/0x30 [ 270.373367][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 270.373367][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 270.373367][ T37] process_one_work+0x965/0x1690 [ 270.373367][ T37] ? lock_release+0x800/0x800 [ 270.373367][ T37] ? pwq_dec_nr_in_flight+0x310/0x310 [ 270.373367][ T37] ? rwlock_bug.part.0+0x90/0x90 [ 270.373367][ T37] worker_thread+0x96/0xe10 [ 270.373367][ T37] ? process_one_work+0x1690/0x1690 [ 270.373367][ T37] kthread+0x3b5/0x4a0 [ 270.373367][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 270.373367][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 270.373367][ T37] ret_from_fork+0x1f/0x30 [ 271.102687][ T37] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u17:2/37 [ 271.116975][ T37] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 271.126627][ T37] CPU: 2 PID: 37 Comm: kworker/u17:2 Not tainted 5.7.0-syzkaller #0 [ 271.136460][ T37] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 271.136460][ T37] Workqueue: writeback wb_workfn (flush-8:0) [ 271.136460][ T37] Call Trace: [ 271.136460][ T37] dump_stack+0x18f/0x20d [ 271.136460][ T37] check_preemption_disabled+0x20d/0x220 [ 271.136460][ T37] ext4_mb_new_blocks+0xa4d/0x3b70 [ 271.136460][ T37] ? ext4_ext_search_right+0x2ca/0xb20 [ 271.136460][ T37] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 271.136460][ T37] ext4_ext_map_blocks+0x201b/0x33e0 [ 271.136460][ T37] ? ext4_ext_release+0x10/0x10 [ 271.136460][ T37] ? down_write_killable+0x170/0x170 [ 271.136460][ T37] ? ext4_es_lookup_extent+0x41d/0xd10 [ 271.136460][ T37] ext4_map_blocks+0x4cb/0x1640 [ 271.136460][ T37] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 271.136460][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 271.136460][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 271.136460][ T37] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 271.136460][ T37] ext4_writepages+0x1a7b/0x33c0 [ 271.136460][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 271.136460][ T37] ? __lock_acquire+0x2224/0x48b0 [ 271.136460][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 271.136460][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 271.136460][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 271.136460][ T37] ? do_writepages+0xfa/0x2a0 [ 271.136460][ T37] do_writepages+0xfa/0x2a0 [ 271.136460][ T37] ? page_writeback_cpu_online+0x10/0x10 [ 271.136460][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 271.136460][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 271.136460][ T37] __writeback_single_inode+0x12a/0x13d0 [ 271.136460][ T37] ? _raw_spin_unlock+0x24/0x40 [ 271.136460][ T37] ? wbc_attach_and_unlock_inode+0x545/0x9c0 [ 271.136460][ T37] writeback_sb_inodes+0x515/0xdc0 [ 271.136460][ T37] ? __writeback_single_inode+0x13d0/0x13d0 [ 271.136460][ T37] __writeback_inodes_wb+0xc3/0x250 [ 271.136460][ T37] wb_writeback+0x8db/0xd50 [ 271.136460][ T37] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 271.136460][ T37] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 271.136460][ T37] ? cpumask_next+0x3c/0x40 [ 271.136460][ T37] ? get_nr_dirty_inodes+0xd6/0x130 [ 271.136460][ T37] wb_workfn+0xab3/0x1090 [ 271.136460][ T37] ? inode_wait_for_writeback+0x30/0x30 [ 271.136460][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 271.136460][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 271.136460][ T37] process_one_work+0x965/0x1690 [ 271.136460][ T37] ? lock_release+0x800/0x800 [ 271.136460][ T37] ? pwq_dec_nr_in_flight+0x310/0x310 [ 271.136460][ T37] ? rwlock_bug.part.0+0x90/0x90 [ 271.136460][ T37] worker_thread+0x96/0xe10 [ 271.136460][ T37] ? process_one_work+0x1690/0x1690 [ 271.136460][ T37] kthread+0x3b5/0x4a0 [ 271.136460][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 271.136460][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 271.136460][ T37] ret_from_fork+0x1f/0x30 [ 271.859405][ T37] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u17:2/37 [ 271.879736][ T37] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 271.890329][ T37] CPU: 0 PID: 37 Comm: kworker/u17:2 Not tainted 5.7.0-syzkaller #0 [ 271.900092][ T37] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 271.900092][ T37] Workqueue: writeback wb_workfn (flush-8:0) [ 271.900092][ T37] Call Trace: [ 271.900092][ T37] dump_stack+0x18f/0x20d [ 271.900092][ T37] check_preemption_disabled+0x20d/0x220 [ 271.900092][ T37] ext4_mb_new_blocks+0xa4d/0x3b70 [ 271.900092][ T37] ? ext4_ext_search_right+0x2ca/0xb20 [ 271.900092][ T37] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 271.900092][ T37] ext4_ext_map_blocks+0x201b/0x33e0 [ 271.900092][ T37] ? ext4_ext_release+0x10/0x10 [ 271.900092][ T37] ? down_write_killable+0x170/0x170 [ 271.900092][ T37] ? ext4_es_lookup_extent+0x41d/0xd10 [ 271.900092][ T37] ext4_map_blocks+0x4cb/0x1640 [ 271.900092][ T37] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 271.900092][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 271.900092][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 271.900092][ T37] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 271.900092][ T37] ext4_writepages+0x1a7b/0x33c0 [ 271.900092][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 271.900092][ T37] ? __lock_acquire+0x2224/0x48b0 [ 271.900092][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 271.900092][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 271.900092][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 271.900092][ T37] ? do_writepages+0xfa/0x2a0 [ 271.900092][ T37] do_writepages+0xfa/0x2a0 [ 271.900092][ T37] ? page_writeback_cpu_online+0x10/0x10 [ 271.900092][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 271.900092][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 271.900092][ T37] __writeback_single_inode+0x12a/0x13d0 [ 271.900092][ T37] ? _raw_spin_unlock+0x24/0x40 [ 271.900092][ T37] ? wbc_attach_and_unlock_inode+0x545/0x9c0 [ 271.900092][ T37] writeback_sb_inodes+0x515/0xdc0 [ 271.900092][ T37] ? __writeback_single_inode+0x13d0/0x13d0 [ 271.900092][ T37] __writeback_inodes_wb+0xc3/0x250 [ 271.900092][ T37] wb_writeback+0x8db/0xd50 [ 271.900092][ T37] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 271.900092][ T37] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 271.900092][ T37] ? cpumask_next+0x3c/0x40 [ 271.900092][ T37] ? get_nr_dirty_inodes+0xd6/0x130 [ 271.900092][ T37] wb_workfn+0xab3/0x1090 [ 271.900092][ T37] ? inode_wait_for_writeback+0x30/0x30 [ 271.900092][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 271.900092][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 271.900092][ T37] process_one_work+0x965/0x1690 [ 271.900092][ T37] ? lock_release+0x800/0x800 [ 271.900092][ T37] ? pwq_dec_nr_in_flight+0x310/0x310 [ 271.900092][ T37] ? rwlock_bug.part.0+0x90/0x90 [ 271.900092][ T37] worker_thread+0x96/0xe10 [ 271.900092][ T37] ? process_one_work+0x1690/0x1690 [ 271.900092][ T37] kthread+0x3b5/0x4a0 [ 271.900092][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 271.900092][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 271.900092][ T37] ret_from_fork+0x1f/0x30 [ 272.706956][ T37] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u17:2/37 [ 272.721545][ T37] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 272.734923][ T37] CPU: 0 PID: 37 Comm: kworker/u17:2 Not tainted 5.7.0-syzkaller #0 [ 272.744794][ T37] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 272.744794][ T37] Workqueue: writeback wb_workfn (flush-8:0) [ 272.744794][ T37] Call Trace: [ 272.744794][ T37] dump_stack+0x18f/0x20d [ 272.744794][ T37] check_preemption_disabled+0x20d/0x220 [ 272.744794][ T37] ext4_mb_new_blocks+0xa4d/0x3b70 [ 272.744794][ T37] ? ext4_ext_search_right+0x2ca/0xb20 [ 272.744794][ T37] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 272.744794][ T37] ext4_ext_map_blocks+0x201b/0x33e0 [ 272.744794][ T37] ? ext4_ext_release+0x10/0x10 [ 272.744794][ T37] ? down_write_killable+0x170/0x170 [ 272.744794][ T37] ? ext4_es_lookup_extent+0x41d/0xd10 [ 272.744794][ T37] ext4_map_blocks+0x4cb/0x1640 [ 272.744794][ T37] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 272.744794][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 272.744794][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 272.744794][ T37] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 272.744794][ T37] ext4_writepages+0x1a7b/0x33c0 [ 273.088281][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 273.108671][ T37] ? __lock_acquire+0x2224/0x48b0 [ 273.128401][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 273.168626][ T37] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 273.188983][ T37] ? __ext4_mark_inode_dirty+0x940/0x940 [ 273.208689][ T37] ? do_writepages+0xfa/0x2a0 [ 273.238307][ T37] do_writepages+0xfa/0x2a0 [ 273.248445][ T37] ? page_writeback_cpu_online+0x10/0x10 [ 273.248445][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 273.268243][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 273.268243][ T37] __writeback_single_inode+0x12a/0x13d0 [ 273.288323][ T37] ? _raw_spin_unlock+0x24/0x40 [ 273.288323][ T37] ? wbc_attach_and_unlock_inode+0x545/0x9c0 [ 273.288323][ T37] writeback_sb_inodes+0x515/0xdc0 [ 273.308334][ T37] ? __writeback_single_inode+0x13d0/0x13d0 [ 273.318292][ T37] __writeback_inodes_wb+0xc3/0x250 [ 273.328239][ T37] wb_writeback+0x8db/0xd50 [ 273.338407][ T37] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 273.348337][ T37] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 273.348337][ T37] ? cpumask_next+0x3c/0x40 [ 273.368327][ T37] ? get_nr_dirty_inodes+0xd6/0x130 [ 273.368327][ T37] wb_workfn+0xab3/0x1090 [ 273.388509][ T37] ? inode_wait_for_writeback+0x30/0x30 [ 273.388509][ T37] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 273.408492][ T37] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 273.449179][ T37] process_one_work+0x965/0x1690 [ 273.468406][ T37] ? lock_release+0x800/0x800 [ 273.489014][ T37] ? pwq_dec_nr_in_flight+0x310/0x310 [ 273.508618][ T37] ? rwlock_bug.part.0+0x90/0x90 [ 273.508618][ T37] worker_thread+0x96/0xe10 [ 273.528502][ T37] ? process_one_work+0x1690/0x1690 [ 273.548467][ T37] kthread+0x3b5/0x4a0 [ 273.548467][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 273.548467][ T37] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 273.614854][ T37] ret_from_fork+0x1f/0x30