[ 53.012950][ T6729] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 53.018922][ T6729] ? do_syscall_64+0x21/0x7d0 [ 53.023593][ T6729] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 53.029989][ T6729] do_syscall_64+0xf6/0x7d0 [ 53.034484][ T6729] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 53.040378][ T6729] RIP: 0033:0x7fbd914b7687 [ 53.044766][ T6729] Code: Bad RIP value. [ 53.048807][ T6729] RSP: 002b:00007ffdd75fa128 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 53.057213][ T6729] RAX: ffffffffffffffda RBX: 00005651d21e4985 RCX: 00007fbd914b7687 [ 53.065177][ T6729] RDX: 00007ffdd75f9ff0 RSI: 00000000000001ed RDI: 00005651d21e4985 [ 53.073411][ T6729] RBP: 00007fbd914b7680 R08: 0000000000000100 R09: 0000000000000000 [ 53.081379][ T6729] R10: 00005651d21e4980 R11: 0000000000000246 R12: 00000000000001ed [ 53.090117][ T6729] R13: 00007ffdd75fa2b0 R14: 0000000000000000 R15: 0000000000000000 Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 56.112200][ T21] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:1/21 [ 56.122375][ T21] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.128718][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.7.0-syzkaller #0 [ 56.136933][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.147000][ T21] Workqueue: writeback wb_workfn (flush-8:0) [ 56.152955][ T21] Call Trace: [ 56.156244][ T21] dump_stack+0x18f/0x20d [ 56.160557][ T21] debug_smp_processor_id.cold+0x88/0x9b [ 56.166192][ T21] ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.171303][ T21] ? ext4_find_extent+0x81a/0xad0 [ 56.176346][ T21] ? ext4_ext_search_right+0x2ca/0xb20 [ 56.181884][ T21] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 56.187679][ T21] ext4_ext_map_blocks+0x201b/0x33e0 [ 56.192947][ T21] ? ext4_ext_release+0x10/0x10 [ 56.197887][ T21] ? down_write_killable+0x170/0x170 [ 56.203164][ T21] ? ext4_es_lookup_extent+0x41d/0xd10 [ 56.208601][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 56.214058][ T21] ext4_map_blocks+0x4cb/0x1640 [ 56.218898][ T21] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 56.225479][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 56.230943][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.236496][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.242478][ T21] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 56.250206][ T21] ext4_writepages+0x1a7b/0x33c0 [ 56.255137][ T21] ? __ext4_mark_inode_dirty+0x940/0x940 [ 56.260749][ T21] ? __lock_acquire+0x2224/0x48b0 [ 56.265775][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.271738][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.277699][ T21] ? __ext4_mark_inode_dirty+0x940/0x940 [ 56.283656][ T21] ? do_writepages+0xfa/0x2a0 [ 56.288360][ T21] do_writepages+0xfa/0x2a0 [ 56.292872][ T21] ? page_writeback_cpu_online+0x10/0x10 [ 56.298833][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 56.304361][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.310408][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.316384][ T21] ? lock_downgrade+0x840/0x840 [ 56.321478][ T21] __writeback_single_inode+0x12a/0x13d0 [ 56.327246][ T21] ? _raw_spin_unlock+0x24/0x40 [ 56.332151][ T21] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 56.338140][ T21] writeback_sb_inodes+0x515/0xdc0 [ 56.344298][ T21] ? __writeback_single_inode+0x13d0/0x13d0 [ 56.350288][ T21] __writeback_inodes_wb+0xc3/0x250 [ 56.356120][ T21] wb_writeback+0x8db/0xd50 [ 56.361642][ T21] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 56.369666][ T21] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 56.376729][ T21] ? cpumask_next+0x3c/0x40 [ 56.382113][ T21] ? get_nr_dirty_inodes+0xd6/0x130 [ 56.387945][ T21] wb_workfn+0xab3/0x1090 [ 56.392358][ T21] ? inode_wait_for_writeback+0x30/0x30 [ 56.398688][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 56.404355][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.410055][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.416973][ T21] process_one_work+0x965/0x1690 [ 56.423224][ T21] ? lock_release+0x800/0x800 [ 56.428782][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 56.434171][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 56.440499][ T21] worker_thread+0x96/0xe10 [ 56.445449][ T21] ? process_one_work+0x1690/0x1690 [ 56.450932][ T21] kthread+0x3b5/0x4a0 [ 56.455059][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.460791][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.466520][ T21] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.10.50' (ECDSA) to the list of known hosts. [ 58.357329][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 58.366827][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.373060][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 58.380937][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.391840][ T1154] Call Trace: [ 58.395119][ T1154] dump_stack+0x18f/0x20d [ 58.399439][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 58.405064][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.410155][ T1154] ? ext4_find_extent+0x81a/0xad0 [ 58.415187][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.420729][ T1154] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.426446][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.431713][ T1154] ? ext4_ext_release+0x10/0x10 [ 58.436811][ T1154] ? down_write_killable+0x170/0x170 [ 58.442073][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.447518][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 58.452348][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.460127][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 58.465573][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.471100][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.477065][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 58.482514][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 58.487445][ T1154] ? mark_lock+0x70/0xdd0 [ 58.491792][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 58.497452][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 58.503091][ T1154] ? do_writepages+0xfa/0x2a0 [ 58.507775][ T1154] do_writepages+0xfa/0x2a0 [ 58.512459][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 58.518093][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 58.523120][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 58.528328][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 58.533171][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 58.538866][ T1154] ? collapse_file+0x35a2/0x4330 [ 58.543780][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 58.550013][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 58.555212][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.561176][ T1154] collapse_file+0x35ac/0x4330 [ 58.565945][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 58.571304][ T1154] ? khugepaged+0x2506/0x3fc0 [ 58.575963][ T1154] ? xas_find+0x31a/0x880 [ 58.580288][ T1154] khugepaged+0x3041/0x3fc0 [ 58.584792][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 58.590420][ T1154] ? lock_downgrade+0x840/0x840 [ 58.595275][ T1154] ? finish_wait+0x260/0x260 [ 58.599870][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 2020/06/13 03:50:13 fuzzer started [ 58.605681][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.611843][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 58.616872][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 58.622513][ T1154] kthread+0x3b5/0x4a0 [ 58.626572][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.632280][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.637983][ T1154] ret_from_fork+0x24/0x30 [ 58.686998][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 58.696338][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.702295][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 58.710187][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.720657][ T1154] Call Trace: [ 58.723945][ T1154] dump_stack+0x18f/0x20d [ 58.728356][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 58.733980][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.739106][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.744633][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 58.750766][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.756037][ T1154] ? ext4_ext_release+0x10/0x10 [ 58.760877][ T1154] ? down_write_killable+0x170/0x170 [ 58.766154][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.771596][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 58.776429][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.781602][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 58.787037][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.792578][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.798545][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 58.804001][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 58.808918][ T1154] ? mark_lock+0x70/0xdd0 [ 58.813233][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 58.818868][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 58.824574][ T1154] ? do_writepages+0xfa/0x2a0 [ 58.829226][ T1154] do_writepages+0xfa/0x2a0 [ 58.833720][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 58.839327][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 58.844327][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 58.849505][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 58.854344][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 58.860049][ T1154] ? collapse_file+0x35a2/0x4330 [ 58.865092][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 58.871209][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 58.876406][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.882370][ T1154] collapse_file+0x35ac/0x4330 [ 58.887126][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 58.892478][ T1154] ? khugepaged+0x2506/0x3fc0 [ 58.897157][ T1154] ? xas_find+0x31a/0x880 [ 58.901494][ T1154] khugepaged+0x3041/0x3fc0 [ 58.905992][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 58.911608][ T1154] ? lock_downgrade+0x840/0x840 [ 58.916438][ T1154] ? finish_wait+0x260/0x260 [ 58.921022][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 58.926968][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.932928][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 58.938061][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 58.943692][ T1154] kthread+0x3b5/0x4a0 [ 58.947757][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.953458][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.959160][ T1154] ret_from_fork+0x24/0x30 [ 58.996305][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 59.005830][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.011816][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 59.019700][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.029807][ T1154] Call Trace: [ 59.033082][ T1154] dump_stack+0x18f/0x20d [ 59.037398][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 59.043014][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.048110][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.053546][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 59.059848][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.065301][ T1154] ? ext4_ext_release+0x10/0x10 [ 59.070158][ T1154] ? down_write_killable+0x170/0x170 [ 59.075516][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.080971][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 59.085818][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.091004][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 59.096441][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.101963][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.107925][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.113361][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 59.118291][ T1154] ? mark_lock+0x70/0xdd0 [ 59.122604][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.128231][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.133855][ T1154] ? do_writepages+0xfa/0x2a0 [ 59.138506][ T1154] do_writepages+0xfa/0x2a0 [ 59.143074][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 59.148682][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 59.153695][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 59.158955][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 59.163797][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 59.172893][ T1154] ? collapse_file+0x35a2/0x4330 [ 59.177820][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 59.183876][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 59.189065][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.195025][ T1154] collapse_file+0x35ac/0x4330 [ 59.199775][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 59.205148][ T1154] ? khugepaged+0x2506/0x3fc0 [ 59.209825][ T1154] ? xas_find+0x31a/0x880 [ 59.214155][ T1154] khugepaged+0x3041/0x3fc0 [ 59.218663][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.224272][ T1154] ? lock_downgrade+0x840/0x840 [ 59.229100][ T1154] ? finish_wait+0x260/0x260 [ 59.233669][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.239452][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.245415][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 59.250415][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.256036][ T1154] kthread+0x3b5/0x4a0 [ 59.260079][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.265774][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.271482][ T1154] ret_from_fork+0x24/0x30 2020/06/13 03:50:14 connecting to host at 10.128.0.26:37665 2020/06/13 03:50:14 checking machine... 2020/06/13 03:50:14 checking revisions... 2020/06/13 03:50:14 testing simple program... [ 59.919053][ T6790] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6790 [ 59.928215][ T6790] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.934216][ T6790] CPU: 0 PID: 6790 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 59.942272][ T6790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.952306][ T6790] Call Trace: [ 59.955583][ T6790] dump_stack+0x18f/0x20d [ 59.959911][ T6790] debug_smp_processor_id.cold+0x88/0x9b [ 59.965532][ T6790] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.970633][ T6790] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.976090][ T6790] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.981807][ T6790] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.987095][ T6790] ? ext4_ext_release+0x10/0x10 [ 59.991967][ T6790] ? down_write_killable+0x170/0x170 [ 59.997243][ T6790] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.002709][ T6790] ext4_map_blocks+0x4cb/0x1640 [ 60.007562][ T6790] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.012742][ T6790] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.018268][ T6790] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.024228][ T6790] ? prandom_u32_state+0xe/0x170 [ 60.029145][ T6790] ? __brelse+0x84/0xa0 [ 60.033310][ T6790] ? __ext4_new_inode+0x144/0x55e0 [ 60.038422][ T6790] ext4_getblk+0xad/0x520 [ 60.042741][ T6790] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.048459][ T6790] ? ext4_free_inode+0x1700/0x1700 [ 60.053571][ T6790] ext4_bread+0x7c/0x380 [ 60.057799][ T6790] ? ext4_getblk+0x520/0x520 [ 60.062370][ T6790] ? dquot_get_next_dqblk+0x180/0x180 [ 60.067730][ T6790] ext4_append+0x153/0x360 [ 60.072145][ T6790] ext4_mkdir+0x5e0/0xdf0 [ 60.076470][ T6790] ? ext4_rmdir+0xde0/0xde0 [ 60.080956][ T6790] ? security_inode_permission+0xc4/0xf0 [ 60.086574][ T6790] vfs_mkdir+0x419/0x690 [ 60.090801][ T6790] do_mkdirat+0x21e/0x280 [ 60.095111][ T6790] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.099942][ T6790] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.105902][ T6790] ? do_syscall_64+0x21/0x7d0 [ 60.110559][ T6790] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.116521][ T6790] do_syscall_64+0xf6/0x7d0 [ 60.121028][ T6790] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.126908][ T6790] RIP: 0033:0x4b02a0 [ 60.130778][ T6790] Code: Bad RIP value. [ 60.134824][ T6790] RSP: 002b:000000c0000774b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 60.143217][ T6790] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 60.151167][ T6790] RDX: 00000000000001c0 RSI: 000000c0000e47a0 RDI: ffffffffffffff9c [ 60.159133][ T6790] RBP: 000000c000077510 R08: 0000000000000000 R09: 0000000000000000 [ 60.167187][ T6790] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 60.175223][ T6790] R13: 000000000000003e R14: 000000000000003d R15: 0000000000000100 [ 60.201188][ T6808] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6808 [ 60.210589][ T6808] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.216596][ T6808] CPU: 1 PID: 6808 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.224843][ T6808] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.234986][ T6808] Call Trace: [ 60.238432][ T6808] dump_stack+0x18f/0x20d [ 60.242796][ T6808] debug_smp_processor_id.cold+0x88/0x9b [ 60.248408][ T6808] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.253506][ T6808] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.259111][ T6808] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.264822][ T6808] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.270108][ T6808] ? ext4_ext_release+0x10/0x10 [ 60.274960][ T6808] ? down_write_killable+0x170/0x170 [ 60.280235][ T6808] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.285938][ T6808] ext4_map_blocks+0x4cb/0x1640 [ 60.290772][ T6808] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.295946][ T6808] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.301491][ T6808] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.307442][ T6808] ? prandom_u32_state+0xe/0x170 [ 60.312371][ T6808] ? __brelse+0x84/0xa0 [ 60.316500][ T6808] ? __ext4_new_inode+0x144/0x55e0 [ 60.321595][ T6808] ext4_getblk+0xad/0x520 [ 60.325901][ T6808] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.331599][ T6808] ? ext4_free_inode+0x1700/0x1700 [ 60.336682][ T6808] ext4_bread+0x7c/0x380 [ 60.340898][ T6808] ? ext4_getblk+0x520/0x520 [ 60.345463][ T6808] ? dquot_get_next_dqblk+0x180/0x180 [ 60.350812][ T6808] ext4_append+0x153/0x360 [ 60.355217][ T6808] ext4_mkdir+0x5e0/0xdf0 [ 60.359531][ T6808] ? ext4_rmdir+0xde0/0xde0 [ 60.364019][ T6808] ? security_inode_permission+0xc4/0xf0 [ 60.369639][ T6808] vfs_mkdir+0x419/0x690 [ 60.373862][ T6808] do_mkdirat+0x21e/0x280 [ 60.378166][ T6808] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.383082][ T6808] ? do_fast_syscall_32+0xcc/0xe90 [ 60.388166][ T6808] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.394122][ T6808] do_fast_syscall_32+0x270/0xe90 [ 60.399122][ T6808] entry_SYSENTER_compat+0x70/0x7f [ 60.474907][ T6809] IPVS: ftp: loaded support on port[0] = 21 [ 60.509359][ T6809] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6809 [ 60.518771][ T6809] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.524736][ T6809] CPU: 0 PID: 6809 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.532963][ T6809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.542996][ T6809] Call Trace: [ 60.546283][ T6809] dump_stack+0x18f/0x20d [ 60.550599][ T6809] debug_smp_processor_id.cold+0x88/0x9b [ 60.556244][ T6809] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.561358][ T6809] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.566792][ T6809] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.572507][ T6809] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.577786][ T6809] ? ext4_ext_release+0x10/0x10 [ 60.582641][ T6809] ? down_write_killable+0x170/0x170 [ 60.587898][ T6809] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.593343][ T6809] ext4_map_blocks+0x4cb/0x1640 [ 60.598173][ T6809] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.603348][ T6809] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.608869][ T6809] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.614825][ T6809] ? prandom_u32_state+0xe/0x170 [ 60.619737][ T6809] ? __brelse+0x84/0xa0 [ 60.623868][ T6809] ? __ext4_new_inode+0x144/0x55e0 [ 60.628955][ T6809] ext4_getblk+0xad/0x520 [ 60.633284][ T6809] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.638984][ T6809] ? ext4_free_inode+0x1700/0x1700 [ 60.644079][ T6809] ext4_bread+0x7c/0x380 [ 60.648311][ T6809] ? ext4_getblk+0x520/0x520 [ 60.652964][ T6809] ? dquot_get_next_dqblk+0x180/0x180 [ 60.658314][ T6809] ext4_append+0x153/0x360 [ 60.662710][ T6809] ext4_mkdir+0x5e0/0xdf0 [ 60.667022][ T6809] ? ext4_rmdir+0xde0/0xde0 [ 60.671516][ T6809] ? security_inode_permission+0xc4/0xf0 [ 60.677139][ T6809] vfs_mkdir+0x419/0x690 [ 60.681376][ T6809] do_mkdirat+0x21e/0x280 [ 60.685681][ T6809] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.690508][ T6809] ? do_fast_syscall_32+0xcc/0xe90 [ 60.695598][ T6809] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.701557][ T6809] do_fast_syscall_32+0x270/0xe90 [ 60.706560][ T6809] entry_SYSENTER_compat+0x70/0x7f 2020/06/13 03:50:15 building call list... [ 61.020916][ T4203] tipc: TX() has been purged, node left! [ 62.506172][ T6796] can: request_module (can-proto-0) failed. executing program [ 63.067386][ T6796] can: request_module (can-proto-0) failed. [ 63.078530][ T6796] can: request_module (can-proto-0) failed.