[ 54.513336][ T6728] ext4_mb_new_blocks+0xa4d/0x3b70 [ 54.518486][ T6728] ? ext4_ext_search_right+0x2ca/0xb20 [ 54.523943][ T6728] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 54.529650][ T6728] ext4_ext_map_blocks+0x201b/0x33e0 [ 54.534923][ T6728] ? ext4_ext_release+0x10/0x10 [ 54.539783][ T6728] ? down_write_killable+0x170/0x170 [ 54.545375][ T6728] ? ext4_es_lookup_extent+0x41d/0xd10 [ 54.550833][ T6728] ext4_map_blocks+0x4cb/0x1640 [ 54.555725][ T6728] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 54.560905][ T6728] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.566438][ T6728] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.572414][ T6728] ? prandom_u32_state+0xe/0x170 [ 54.577331][ T6728] ? __brelse+0x84/0xa0 [ 54.581477][ T6728] ? __ext4_new_inode+0x144/0x55e0 [ 54.586573][ T6728] ext4_getblk+0xad/0x520 [ 54.590899][ T6728] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 54.596600][ T6728] ? ext4_free_inode+0x1700/0x1700 [ 54.601713][ T6728] ext4_bread+0x7c/0x380 [ 54.605935][ T6728] ? ext4_getblk+0x520/0x520 [ 54.610507][ T6728] ? dquot_get_next_dqblk+0x180/0x180 [ 54.615865][ T6728] ext4_append+0x153/0x360 [ 54.620267][ T6728] ext4_mkdir+0x5e0/0xdf0 [ 54.624599][ T6728] ? ext4_rmdir+0xde0/0xde0 [ 54.629082][ T6728] ? security_inode_permission+0xc4/0xf0 [ 54.634720][ T6728] vfs_mkdir+0x419/0x690 [ 54.638977][ T6728] do_mkdirat+0x21e/0x280 [ 54.643310][ T6728] ? __ia32_sys_mknod+0xb0/0xb0 [ 54.648194][ T6728] ? do_syscall_64+0x1c/0xe0 [ 54.648211][ T6728] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 54.648231][ T6728] do_syscall_64+0x60/0xe0 [ 54.648249][ T6728] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 54.648261][ T6728] RIP: 0033:0x7f9d6560d687 [ 54.648267][ T6728] Code: Bad RIP value. [ 54.648275][ T6728] RSP: 002b:00007ffd635dc698 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 54.648289][ T6728] RAX: ffffffffffffffda RBX: 000055e9ac152985 RCX: 00007f9d6560d687 [ 54.648304][ T6728] RDX: 00007ffd635dc560 RSI: 00000000000001ed RDI: 000055e9ac152985 [ 54.648312][ T6728] RBP: 00007f9d6560d680 R08: 0000000000000100 R09: 0000000000000000 [ 54.648320][ T6728] R10: 000055e9ac152980 R11: 0000000000000246 R12: 00000000000001ed [ 54.648328][ T6728] R13: 00007ffd635dc820 R14: 0000000000000000 R15: 0000000000000000 [ 54.711966][ T41] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/41 [ 54.789198][ T41] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 54.789215][ T41] CPU: 0 PID: 41 Comm: kworker/u4:2 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 54.789222][ T41] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.789235][ T41] Workqueue: writeback wb_workfn (flush-8:0) [ 54.789245][ T41] Call Trace: [ 54.789262][ T41] dump_stack+0x18f/0x20d [ 54.789302][ T41] check_preemption_disabled+0x20d/0x220 [ 54.789320][ T41] ext4_mb_new_blocks+0xa4d/0x3b70 [ 54.789333][ T41] ? ext4_find_extent+0x81a/0xad0 [ 54.789349][ T41] ? ext4_ext_search_right+0x2ca/0xb20 [ 54.789363][ T41] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 54.789382][ T41] ext4_ext_map_blocks+0x201b/0x33e0 [ 54.789405][ T41] ? ext4_ext_release+0x10/0x10 [ 54.789436][ T41] ? down_write_killable+0x170/0x170 [ 54.789449][ T41] ? ext4_es_lookup_extent+0x41d/0xd10 [ 54.789472][ T41] ext4_map_blocks+0x4cb/0x1640 [ 54.789494][ T41] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 54.789519][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.789534][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.789549][ T41] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 54.789566][ T41] ext4_writepages+0x1ab5/0x3400 [ 54.789601][ T41] ? __ext4_mark_inode_dirty+0x940/0x940 [ 54.789616][ T41] ? __lock_acquire+0x2224/0x48b0 [ 54.789649][ T41] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 54.789667][ T41] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 54.789685][ T41] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 54.789703][ T41] ? __ext4_mark_inode_dirty+0x940/0x940 [ 54.789719][ T41] ? do_writepages+0xfa/0x2a0 [ 54.789734][ T41] do_writepages+0xfa/0x2a0 [ 54.789757][ T41] ? page_writeback_cpu_online+0x10/0x10 [ 54.789780][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.789796][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.789810][ T41] ? lock_downgrade+0x840/0x840 [ 54.789831][ T41] __writeback_single_inode+0x12a/0x13d0 [ 54.789847][ T41] ? _raw_spin_unlock+0x24/0x40 [ 54.789861][ T41] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 54.789878][ T41] writeback_sb_inodes+0x515/0xdc0 [ 54.789905][ T41] ? __writeback_single_inode+0x13d0/0x13d0 [ 54.789939][ T41] __writeback_inodes_wb+0xc3/0x250 [ 54.789961][ T41] wb_writeback+0x8db/0xd50 [ 54.789987][ T41] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 54.790007][ T41] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 54.790029][ T41] ? cpumask_next+0x3c/0x40 [ 54.790045][ T41] ? get_nr_dirty_inodes+0xd6/0x130 [ 54.790068][ T41] wb_workfn+0xab3/0x1090 [ 54.790092][ T41] ? inode_wait_for_writeback+0x30/0x30 [ 54.790112][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.790128][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.790151][ T41] process_one_work+0x965/0x1690 [ 54.790175][ T41] ? lock_release+0x800/0x800 [ 54.790191][ T41] ? pwq_dec_nr_in_flight+0x310/0x310 [ 54.790210][ T41] ? rwlock_bug.part.0+0x90/0x90 [ 54.790236][ T41] worker_thread+0x96/0xe10 [ 54.790264][ T41] ? process_one_work+0x1690/0x1690 [ 54.790290][ T41] kthread+0x3b5/0x4a0 [ 54.790304][ T41] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 54.790318][ T41] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 54.790338][ T41] ret_from_fork+0x1f/0x30 [ 54.844317][ T41] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/41 [ 55.145157][ T41] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.145173][ T41] CPU: 0 PID: 41 Comm: kworker/u4:2 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 55.145186][ T41] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.170216][ T41] Workqueue: writeback wb_workfn (flush-8:0) [ 55.170227][ T41] Call Trace: [ 55.170249][ T41] dump_stack+0x18f/0x20d [ 55.170271][ T41] check_preemption_disabled+0x20d/0x220 [ 55.170288][ T41] ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.170303][ T41] ? ext4_find_extent+0x81a/0xad0 [ 55.170337][ T41] ? ext4_ext_search_right+0x2ca/0xb20 [ 55.170353][ T41] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 55.170375][ T41] ext4_ext_map_blocks+0x201b/0x33e0 [ 55.170399][ T41] ? ext4_ext_release+0x10/0x10 [ 55.170430][ T41] ? down_write_killable+0x170/0x170 [ 55.170445][ T41] ? ext4_es_lookup_extent+0x41d/0xd10 [ 55.170470][ T41] ext4_map_blocks+0x4cb/0x1640 [ 55.170495][ T41] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 55.170519][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.170536][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.170553][ T41] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 55.170571][ T41] ext4_writepages+0x1ab5/0x3400 [ 55.170609][ T41] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.170624][ T41] ? __lock_acquire+0x2224/0x48b0 [ 55.170656][ T41] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.170676][ T41] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.170693][ T41] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.170706][ T41] ? do_writepages+0xfa/0x2a0 [ 55.170718][ T41] do_writepages+0xfa/0x2a0 [ 55.170737][ T41] ? page_writeback_cpu_online+0x10/0x10 [ 55.170758][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.170773][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.170786][ T41] ? lock_downgrade+0x840/0x840 [ 55.170805][ T41] __writeback_single_inode+0x12a/0x13d0 [ 55.170820][ T41] ? _raw_spin_unlock+0x24/0x40 [ 55.170835][ T41] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 55.170855][ T41] writeback_sb_inodes+0x515/0xdc0 [ 55.170885][ T41] ? __writeback_single_inode+0x13d0/0x13d0 [ 55.170921][ T41] __writeback_inodes_wb+0xc3/0x250 [ 55.170945][ T41] wb_writeback+0x8db/0xd50 [ 55.170969][ T41] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 55.170989][ T41] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 55.171009][ T41] ? cpumask_next+0x3c/0x40 [ 55.171026][ T41] ? get_nr_dirty_inodes+0xd6/0x130 [ 55.171047][ T41] wb_workfn+0xab3/0x1090 [ 55.171075][ T41] ? inode_wait_for_writeback+0x30/0x30 [ 55.171098][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.171115][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.171140][ T41] process_one_work+0x965/0x1690 [ 55.171165][ T41] ? lock_release+0x800/0x800 [ 55.171180][ T41] ? pwq_dec_nr_in_flight+0x310/0x310 [ 55.171198][ T41] ? rwlock_bug.part.0+0x90/0x90 [ 55.171221][ T41] worker_thread+0x96/0xe10 [ 55.171247][ T41] ? process_one_work+0x1690/0x1690 [ 55.171264][ T41] kthread+0x3b5/0x4a0 [ 55.171278][ T41] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.171292][ T41] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.171317][ T41] ret_from_fork+0x1f/0x30 [ 55.254296][ T41] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/41 [ 55.493713][ T41] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.493729][ T41] CPU: 0 PID: 41 Comm: kworker/u4:2 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 55.493736][ T41] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.493750][ T41] Workqueue: writeback wb_workfn (flush-8:0) [ 55.493759][ T41] Call Trace: [ 55.493776][ T41] dump_stack+0x18f/0x20d [ 55.493798][ T41] check_preemption_disabled+0x20d/0x220 [ 55.493813][ T41] ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.493829][ T41] ? ext4_find_extent+0x81a/0xad0 [ 55.493852][ T41] ? ext4_ext_search_right+0x2ca/0xb20 [ 55.493868][ T41] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 55.493890][ T41] ext4_ext_map_blocks+0x201b/0x33e0 [ 55.493915][ T41] ? ext4_ext_release+0x10/0x10 [ 55.493948][ T41] ? down_write_killable+0x170/0x170 [ 55.493964][ T41] ? ext4_es_lookup_extent+0x41d/0xd10 [ 55.493990][ T41] ext4_map_blocks+0x4cb/0x1640 [ 55.494015][ T41] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 55.494040][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.494058][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.494075][ T41] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 55.494094][ T41] ext4_writepages+0x1ab5/0x3400 [ 55.494133][ T41] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.494148][ T41] ? __lock_acquire+0x2224/0x48b0 [ 55.494180][ T41] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.494200][ T41] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.494215][ T41] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.494229][ T41] ? do_writepages+0xfa/0x2a0 [ 55.494241][ T41] do_writepages+0xfa/0x2a0 [ 55.494261][ T41] ? page_writeback_cpu_online+0x10/0x10 [ 55.494282][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.494298][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.494311][ T41] ? lock_downgrade+0x840/0x840 [ 55.494331][ T41] __writeback_single_inode+0x12a/0x13d0 [ 55.494347][ T41] ? _raw_spin_unlock+0x24/0x40 [ 55.494363][ T41] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 55.494382][ T41] writeback_sb_inodes+0x515/0xdc0 [ 55.494414][ T41] ? __writeback_single_inode+0x13d0/0x13d0 [ 55.494452][ T41] __writeback_inodes_wb+0xc3/0x250 [ 55.494475][ T41] wb_writeback+0x8db/0xd50 [ 55.494500][ T41] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 55.494520][ T41] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 55.494540][ T41] ? cpumask_next+0x3c/0x40 [ 55.494558][ T41] ? get_nr_dirty_inodes+0xd6/0x130 [ 55.494579][ T41] wb_workfn+0xab3/0x1090 [ 55.494603][ T41] ? inode_wait_for_writeback+0x30/0x30 [ 55.494626][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.494643][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.494676][ T41] process_one_work+0x965/0x1690 [ 55.494701][ T41] ? lock_release+0x800/0x800 [ 55.494717][ T41] ? pwq_dec_nr_in_flight+0x310/0x310 [ 55.494738][ T41] ? rwlock_bug.part.0+0x90/0x90 [ 55.494765][ T41] worker_thread+0x96/0xe10 [ 55.494794][ T41] ? process_one_work+0x1690/0x1690 [ 55.494811][ T41] kthread+0x3b5/0x4a0 [ 55.494825][ T41] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.494839][ T41] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.494859][ T41] ret_from_fork+0x1f/0x30 [ 55.562284][ T41] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/41 [ 55.831931][ T41] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.831948][ T41] CPU: 1 PID: 41 Comm: kworker/u4:2 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 55.831963][ T41] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.857033][ T41] Workqueue: writeback wb_workfn (flush-8:0) [ 55.857044][ T41] Call Trace: [ 55.857065][ T41] dump_stack+0x18f/0x20d [ 55.857100][ T41] check_preemption_disabled+0x20d/0x220 [ 55.876304][ T41] ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.876319][ T41] ? ext4_find_extent+0x81a/0xad0 [ 55.876340][ T41] ? ext4_ext_search_right+0x2ca/0xb20 [ 55.876355][ T41] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 55.876377][ T41] ext4_ext_map_blocks+0x201b/0x33e0 [ 55.876401][ T41] ? ext4_ext_release+0x10/0x10 [ 55.876436][ T41] ? down_write_killable+0x170/0x170 [ 55.876450][ T41] ? ext4_es_lookup_extent+0x41d/0xd10 [ 55.876474][ T41] ext4_map_blocks+0x4cb/0x1640 [ 55.876497][ T41] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 55.876520][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.876537][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.876553][ T41] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 55.876571][ T41] ext4_writepages+0x1ab5/0x3400 [ 55.876606][ T41] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.876621][ T41] ? __lock_acquire+0x2224/0x48b0 [ 55.876655][ T41] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.876677][ T41] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.876694][ T41] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.876710][ T41] ? do_writepages+0xfa/0x2a0 [ 55.876724][ T41] do_writepages+0xfa/0x2a0 [ 55.876746][ T41] ? page_writeback_cpu_online+0x10/0x10 [ 55.876766][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.876782][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.876794][ T41] ? lock_downgrade+0x840/0x840 [ 55.876812][ T41] __writeback_single_inode+0x12a/0x13d0 [ 55.876827][ T41] ? _raw_spin_unlock+0x24/0x40 [ 55.876841][ T41] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 55.876859][ T41] writeback_sb_inodes+0x515/0xdc0 [ 55.876888][ T41] ? __writeback_single_inode+0x13d0/0x13d0 [ 55.876923][ T41] __writeback_inodes_wb+0xc3/0x250 [ 55.876947][ T41] wb_writeback+0x8db/0xd50 [ 55.876974][ T41] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 55.876994][ T41] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 55.877016][ T41] ? cpumask_next+0x3c/0x40 [ 55.877032][ T41] ? get_nr_dirty_inodes+0xd6/0x130 [ 55.877054][ T41] wb_workfn+0xab3/0x1090 [ 55.877076][ T41] ? inode_wait_for_writeback+0x30/0x30 [ 55.877115][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.877127][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.877146][ T41] process_one_work+0x965/0x1690 [ 55.877166][ T41] ? lock_release+0x800/0x800 [ 55.877178][ T41] ? pwq_dec_nr_in_flight+0x310/0x310 [ 55.877194][ T41] ? rwlock_bug.part.0+0x90/0x90 [ 55.877214][ T41] worker_thread+0x96/0xe10 [ 55.877236][ T41] ? process_one_work+0x1690/0x1690 [ 55.877250][ T41] kthread+0x3b5/0x4a0 [ 55.877262][ T41] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.877272][ T41] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.877289][ T41] ret_from_fork+0x1f/0x30 [ 55.977167][ T41] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/41 [ 56.169723][ T41] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.169740][ T41] CPU: 1 PID: 41 Comm: kworker/u4:2 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 56.169747][ T41] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.169760][ T41] Workqueue: writeback wb_workfn (flush-8:0) [ 56.200752][ T41] Call Trace: [ 56.200777][ T41] dump_stack+0x18f/0x20d [ 56.200797][ T41] check_preemption_disabled+0x20d/0x220 [ 56.20015][ T41] ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.219125][ T41] ? ext4_find_extent+0x81a/0xad0 [ 56.219149][ T41] ? ext4_ext_search_right+0x2ca/0xb20 [ 56.229647][ T41] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 56.229670][ T41] ext4_ext_map_blocks+0x201b/0x33e0 [ 56.229693][ T41] ? ext4_ext_release+0x10/0x10 [ 56.229726][ T41] ? down_write_killable+0x170/0x170 [ 56.229740][ T41] ? ext4_es_lookup_extent+0x41d/0xd10 [ 56.229761][ T41] ext4_map_blocks+0x4cb/0x1640 [ 56.229783][ T41] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 56.229805][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.229822][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.229837][ T41] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 56.229852][ T41] ext4_writepages+0x1ab5/0x3400 [ 56.229882][ T41] ? __ext4_mark_inode_dirty+0x940/0x940 [ 56.229897][ T41] ? __lock_acquire+0x2224/0x48b0 [ 56.229929][ T41] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.229950][ T41] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.229968][ T41] ? __ext4_mark_inode_dirty+0x940/0x940 [ 56.229983][ T41] ? do_writepages+0xfa/0x2a0 [ 56.229997][ T41] do_writepages+0xfa/0x2a0 [ 56.230020][ T41] ? page_writeback_cpu_online+0x10/0x10 [ 56.230043][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.230060][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.230074][ T41] ? lock_downgrade+0x840/0x840 [ 56.230121][ T41] __writeback_single_inode+0x12a/0x13d0 [ 56.230137][ T41] ? _raw_spin_unlock+0x24/0x40 [ 56.230151][ T41] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 56.230172][ T41] writeback_sb_inodes+0x515/0xdc0 [ 56.230203][ T41] ? __writeback_single_inode+0x13d0/0x13d0 [ 56.230242][ T41] __writeback_inodes_wb+0xc3/0x250 [ 56.230267][ T41] wb_writeback+0x8db/0xd50 [ 56.230293][ T41] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 56.230314][ T41] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 56.230336][ T41] ? cpumask_next+0x3c/0x40 [ 56.230353][ T41] ? get_nr_dirty_inodes+0xd6/0x130 [ 56.230376][ T41] wb_workfn+0xab3/0x1090 [ 56.230400][ T41] ? inode_wait_for_writeback+0x30/0x30 [ 56.230422][ T41] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.230438][ T41] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.230461][ T41] process_one_work+0x965/0x1690 [ 56.230487][ T41] ? lock_release+0x800/0x800 [ 56.230504][ T41] ? pwq_dec_nr_in_flight+0x310/0x310 [ 56.230524][ T41] ? rwlock_bug.part.0+0x90/0x90 [ 56.230549][ T41] worker_thread+0x96/0xe10 [ 56.230577][ T41] ? process_one_work+0x1690/0x1690 [ 56.230592][ T41] kthread+0x3b5/0x4a0 [ 56.230606][ T41] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.230620][ T41] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.230639][ T41] ret_from_fork+0x1f/0x30 Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.193' (ECDSA) to the list of known hosts. 2020/06/03 11:02:13 fuzzer started 2020/06/03 11:02:14 connecting to host at 10.128.0.26:34261 2020/06/03 11:02:14 checking machine... 2020/06/03 11:02:14 checking revisions... 2020/06/03 11:02:14 testing simple program... syzkaller login: [ 60.417367][ T6802] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6802 [ 60.426491][ T6802] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.432453][ T6802] CPU: 1 PID: 6802 Comm: syz-fuzzer Not tainted 5.7.0-next-20200603-syzkaller #0 [ 60.441701][ T6802] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.451856][ T6802] Call Trace: [ 60.455153][ T6802] dump_stack+0x18f/0x20d [ 60.459472][ T6802] check_preemption_disabled+0x20d/0x220 [ 60.465093][ T6802] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.470192][ T6802] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.475630][ T6802] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.481350][ T6802] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.486634][ T6802] ? ext4_ext_release+0x10/0x10 [ 60.491480][ T6802] ? down_write_killable+0x170/0x170 [ 60.496761][ T6802] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.502224][ T6802] ext4_map_blocks+0x4cb/0x1640 [ 60.507073][ T6802] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.512252][ T6802] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.517793][ T6802] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.523768][ T6802] ? prandom_u32_state+0xe/0x170 [ 60.528714][ T6802] ? __brelse+0x84/0xa0 [ 60.532864][ T6802] ? __ext4_new_inode+0x144/0x55e0 [ 60.537974][ T6802] ext4_getblk+0xad/0x520 [ 60.542287][ T6802] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.548005][ T6802] ? ext4_free_inode+0x1700/0x1700 [ 60.553118][ T6802] ext4_bread+0x7c/0x380 [ 60.557341][ T6802] ? ext4_getblk+0x520/0x520 [ 60.561914][ T6802] ? dquot_get_next_dqblk+0x180/0x180 [ 60.567268][ T6802] ext4_append+0x153/0x360 [ 60.571669][ T6802] ext4_mkdir+0x5e0/0xdf0 [ 60.575983][ T6802] ? ext4_rmdir+0xde0/0xde0 [ 60.580481][ T6802] ? security_inode_permission+0xc4/0xf0 [ 60.586110][ T6802] vfs_mkdir+0x419/0x690 [ 60.590356][ T6802] do_mkdirat+0x21e/0x280 [ 60.594683][ T6802] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.599517][ T6802] ? do_syscall_64+0x1c/0xe0 [ 60.604088][ T6802] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.610062][ T6802] do_syscall_64+0x60/0xe0 [ 60.614461][ T6802] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.620330][ T6802] RIP: 0033:0x4b02a0 [ 60.624216][ T6802] Code: Bad RIP value. [ 60.628275][ T6802] RSP: 002b:000000c0000db4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 60.636681][ T6802] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 60.644650][ T6802] RDX: 00000000000001c0 RSI: 000000c00009cbe0 RDI: ffffffffffffff9c [ 60.652619][ T6802] RBP: 000000c0000db510 R08: 0000000000000000 R09: 0000000000000000 [ 60.660571][ T6802] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 60.668522][ T6802] R13: 0000000000000060 R14: 000000000000005f R15: 0000000000000100 [ 60.685010][ T6814] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6814 [ 60.694477][ T6814] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.700431][ T6814] CPU: 1 PID: 6814 Comm: syz-executor.0 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 60.709872][ T6814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.719905][ T6814] Call Trace: [ 60.723198][ T6814] dump_stack+0x18f/0x20d [ 60.727514][ T6814] check_preemption_disabled+0x20d/0x220 [ 60.733126][ T6814] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.738235][ T6814] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.743675][ T6814] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.749390][ T6814] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.754662][ T6814] ? ext4_ext_release+0x10/0x10 [ 60.759500][ T6814] ? down_write_killable+0x170/0x170 [ 60.764766][ T6814] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.770208][ T6814] ext4_map_blocks+0x4cb/0x1640 [ 60.775044][ T6814] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.780221][ T6814] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.785747][ T6814] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.791727][ T6814] ? prandom_u32_state+0xe/0x170 [ 60.796643][ T6814] ? __brelse+0x84/0xa0 [ 60.800782][ T6814] ? __ext4_new_inode+0x144/0x55e0 [ 60.805875][ T6814] ext4_getblk+0xad/0x520 [ 60.810206][ T6814] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.815924][ T6814] ? ext4_free_inode+0x1700/0x1700 [ 60.821034][ T6814] ext4_bread+0x7c/0x380 [ 60.825254][ T6814] ? ext4_getblk+0x520/0x520 [ 60.829853][ T6814] ? dquot_get_next_dqblk+0x180/0x180 [ 60.835228][ T6814] ext4_append+0x153/0x360 [ 60.839642][ T6814] ext4_mkdir+0x5e0/0xdf0 [ 60.843964][ T6814] ? ext4_rmdir+0xde0/0xde0 [ 60.848478][ T6814] ? security_inode_permission+0xc4/0xf0 [ 60.854097][ T6814] vfs_mkdir+0x419/0x690 [ 60.858341][ T6814] do_mkdirat+0x21e/0x280 [ 60.862685][ T6814] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.867536][ T6814] ? do_syscall_64+0x1c/0xe0 [ 60.872109][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.878069][ T6814] do_syscall_64+0x60/0xe0 [ 60.882470][ T6814] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.888358][ T6814] RIP: 0033:0x45bee7 [ 60.892234][ T6814] Code: Bad RIP value. [ 60.896279][ T6814] RSP: 002b:00007ffe66fa4a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 60.904670][ T6814] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 60.912642][ T6814] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffe66fa4c40 [ 60.920594][ T6814] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003140 [ 60.928559][ T6814] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 60.936523][ T6814] R13: 00007ffe66fa4c40 R14: 8421084210842109 R15: 00007ffe66fa4c4c [ 61.018331][ T6815] IPVS: ftp: loaded support on port[0] = 21 [ 61.054018][ T6815] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6815 [ 61.063560][ T6815] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.069438][ T6815] CPU: 0 PID: 6815 Comm: syz-executor.0 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 61.078869][ T6815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.088905][ T6815] Call Trace: [ 61.092181][ T6815] dump_stack+0x18f/0x20d [ 61.096494][ T6815] check_preemption_disabled+0x20d/0x220 [ 61.102106][ T6815] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.107216][ T6815] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.112655][ T6815] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.118364][ T6815] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.123632][ T6815] ? ext4_ext_release+0x10/0x10 [ 61.128469][ T6815] ? down_write_killable+0x170/0x170 [ 61.133730][ T6815] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.139169][ T6815] ext4_map_blocks+0x4cb/0x1640 [ 61.144003][ T6815] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.149176][ T6815] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.154717][ T6815] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.160691][ T6815] ? prandom_u32_state+0xe/0x170 [ 61.165612][ T6815] ? __brelse+0x84/0xa0 [ 61.169747][ T6815] ? __ext4_new_inode+0x144/0x55e0 [ 61.174840][ T6815] ext4_getblk+0xad/0x520 [ 61.179150][ T6815] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.184853][ T6815] ? ext4_free_inode+0x1700/0x1700 [ 61.189943][ T6815] ext4_bread+0x7c/0x380 [ 61.194163][ T6815] ? ext4_getblk+0x520/0x520 [ 61.198753][ T6815] ? dquot_get_next_dqblk+0x180/0x180 [ 61.204107][ T6815] ext4_append+0x153/0x360 [ 61.208522][ T6815] ext4_mkdir+0x5e0/0xdf0 [ 61.212851][ T6815] ? ext4_rmdir+0xde0/0xde0 [ 61.217336][ T6815] ? security_inode_permission+0xc4/0xf0 [ 61.222967][ T6815] vfs_mkdir+0x419/0x690 [ 61.227291][ T6815] do_mkdirat+0x21e/0x280 [ 61.231622][ T6815] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.236457][ T6815] ? do_syscall_64+0x1c/0xe0 [ 61.241030][ T6815] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.246990][ T6815] do_syscall_64+0x60/0xe0 [ 61.251404][ T6815] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.257300][ T6815] RIP: 0033:0x45bee7 [ 61.261164][ T6815] Code: Bad RIP value. [ 61.265259][ T6815] RSP: 002b:00007ffe66fa4958 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 61.273660][ T6815] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 61.281614][ T6815] RDX: 00007ffe66fa49a3 RSI: 00000000000001ff RDI: 00007ffe66fa49a0 [ 61.289563][ T6815] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 61.297512][ T6815] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 61.305461][ T6815] R13: 00007ffe66fa4990 R14: 0000000000000000 R15: 00007ffe66fa49a0 [ 61.358024][ T6815] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6815 [ 61.367691][ T6815] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.373689][ T6815] CPU: 1 PID: 6815 Comm: syz-executor.0 Not tainted 5.7.0-next-20200603-syzkaller #0 [ 61.383145][ T6815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.393233][ T6815] Call Trace: [ 61.396534][ T6815] dump_stack+0x18f/0x20d [ 61.400881][ T6815] check_preemption_disabled+0x20d/0x220 [ 61.406521][ T6815] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.411762][ T6815] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.417234][ T6815] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.422971][ T6815] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.428254][ T6815] ? ext4_ext_release+0x10/0x10 [ 61.433137][ T6815] ? down_write_killable+0x170/0x170 [ 61.438552][ T6815] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.444020][ T6815] ext4_map_blocks+0x4cb/0x1640 [ 61.448855][ T6815] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.454137][ T6815] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.459665][ T6815] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.465659][ T6815] ? prandom_u32_state+0xe/0x170 [ 61.470611][ T6815] ? __brelse+0x84/0xa0 [ 61.474749][ T6815] ? __ext4_new_inode+0x144/0x55e0 [ 61.479847][ T6815] ext4_getblk+0xad/0x520 [ 61.484169][ T6815] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.489891][ T6815] ? ext4_free_inode+0x1700/0x1700 [ 61.495006][ T6815] ext4_bread+0x7c/0x380 [ 61.499236][ T6815] ? ext4_getblk+0x520/0x520 [ 61.503808][ T6815] ? dquot_get_next_dqblk+0x180/0x180 [ 61.509168][ T6815] ext4_append+0x153/0x360 [ 61.513594][ T6815] ext4_mkdir+0x5e0/0xdf0 [ 61.517909][ T6815] ? ext4_rmdir+0xde0/0xde0 [ 61.522398][ T6815] ? security_inode_permission+0xc4/0xf0 [ 61.528016][ T6815] vfs_mkdir+0x419/0x690 [ 61.532244][ T6815] do_mkdirat+0x21e/0x280 [ 61.536557][ T6815] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.541415][ T6815] ? do_syscall_64+0x1c/0xe0 [ 61.545987][ T6815] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.552034][ T6815] do_syscall_64+0x60/0xe0 2020/06/03 11:02:15 building call list... [ 61.556562][ T6815] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.562440][ T6815] RIP: 0033:0x45bee7 [ 61.566312][ T6815] Code: Bad RIP value. [ 61.570359][ T6815] RSP: 002b:00007ffe66fa4958 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 61.578751][ T6815] RAX: ffffffffffffffda RBX: 000000000000efa4 RCX: 000000000045bee7 [ 61.586714][ T6815] RDX: 00007ffe66fa49a3 RSI: 00000000000001ff RDI: 00007ffe66fa49a0 [ 61.594675][ T6815] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 61.602690][ T6815] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 61.610669][ T6815] R13: 00007ffe66fa4990 R14: 000000000000ef97 R15: 00007ffe66fa49a0 [ 61.860242][ T41] tipc: TX() has been purged, node left! executing program [ 63.273505][ T6802] can: request_module (can-proto-0) failed. [ 63.865044][ T6802] can: request_module (can-proto-0) failed. [ 63.876840][ T6802] can: request_module (can-proto-0) failed.