Starting OpenBSD Secure Shell server... Starting System Logging Service... [ OK ] Started Permit User Sessions. [ OK ] Started System Logging Service. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK [[ 54.412037][ T6856] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6856 0m] Started Upda[ 54.421857][ T6856] caller is ext4_mb_new_blocks+0xa77/0x3b30 te UTMP about Sy[ 54.429702][ T6856] CPU: 1 PID: 6856 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 54.439411][ T6856] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.449489][ T6856] Call Trace: [ 54.452772][ T6856] dump_stack+0x188/0x20d [ 54.457132][ T6856] debug_smp_processor_id.cold+0x88/0x9b [ 54.462748][ T6856] ext4_mb_new_blocks+0xa77/0x3b30 [ 54.467850][ T6856] ? ext4_ext_search_right+0x2ca/0xb20 [ 54.473289][ T6856] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 54.478994][ T6856] ext4_ext_map_blocks+0x2044/0x3410 [ 54.484285][ T6856] ? ext4_ext_release+0x10/0x10 [ 54.489133][ T6856] ? __down_timeout+0x2d0/0x2d0 [ 54.494423][ T6856] ? ext4_es_lookup_extent+0x41d/0xd30 [ 54.500060][ T6856] ext4_map_blocks+0x4cb/0x1640 [ 54.504897][ T6856] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 54.510088][ T6856] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.516047][ T6856] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.522003][ T6856] ? prandom_u32_state+0xe/0x170 [ 54.527010][ T6856] ? __brelse+0x84/0xa0 [ 54.531581][ T6856] ? __ext4_new_inode+0x144/0x57c0 [ 54.536674][ T6856] ext4_getblk+0xad/0x520 [ 54.540992][ T6856] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 54.546709][ T6856] ? ext4_free_inode+0x17e0/0x17e0 [ 54.551800][ T6856] ext4_bread+0x7c/0x380 [ 54.556021][ T6856] ? ext4_getblk+0x520/0x520 [ 54.560588][ T6856] ? dqget+0xff0/0xff0 [ 54.564651][ T6856] ext4_append+0x153/0x360 [ 54.569056][ T6856] ext4_mkdir+0x5e0/0xdf0 [ 54.573368][ T6856] ? ext4_rmdir+0xde0/0xde0 [ 54.577928][ T6856] ? security_inode_permission+0xc4/0xf0 [ 54.583572][ T6856] vfs_mkdir+0x419/0x690 [ 54.587820][ T6856] do_mkdirat+0x21e/0x280 [ 54.592134][ T6856] ? __ia32_sys_mknod+0xb0/0xb0 [ 54.596985][ T6856] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 54.602944][ T6856] ? do_syscall_64+0x21/0x7d0 [ 54.607601][ T6856] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 54.613562][ T6856] do_syscall_64+0xf6/0x7d0 [ 54.618048][ T6856] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 54.623936][ T6856] RIP: 0033:0x7fe5ae8bf687 [ 54.628348][ T6856] Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 [ 54.648042][ T6856] RSP: 002b:00007ffe9df634f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 54.656433][ T6856] RAX: ffffffffffffffda RBX: 00005624fcb7f985 RCX: 00007fe5ae8bf687 [ 54.664385][ T6856] RDX: 00007ffe9df633c0 RSI: 00000000000001ed RDI: 00005624fcb7f985 [ 54.672335][ T6856] RBP: 00007fe5ae8bf680 R08: 0000000000000100 R09: 0000000000000000 [ 54.680284][ T6856] R10: 00005624fcb7f980 R11: 0000000000000246 R12: 00000000000001ed [ 54.688279][ T6856] R13: 00007ffe9df63680 R14: 0000000000000000 R15: 0000000000000000 stem Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.197' (ECDSA) to the list of known hosts. 2020/06/13 02:34:07 fuzzer started 2020/06/13 02:34:07 connecting to host at 10.128.0.26:44467 2020/06/13 02:34:07 checking machine... 2020/06/13 02:34:07 checking revisions... 2020/06/13 02:34:07 testing simple program... syzkaller login: [ 59.655301][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 59.665428][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.671327][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 59.679212][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.689267][ T1154] Call Trace: [ 59.692595][ T1154] dump_stack+0x188/0x20d [ 59.696935][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 59.702576][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.707694][ T1154] ? __kmalloc+0x62f/0x7a0 [ 59.712729][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.718449][ T1154] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.724178][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 59.729471][ T1154] ? ext4_ext_release+0x10/0x10 [ 59.734335][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 59.739204][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.744669][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 59.749521][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.754717][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 59.760193][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.765758][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.771737][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.777203][ T1154] ext4_writepages+0x1ab7/0x3400 [ 59.782239][ T1154] ? lockdep_hardirqs_on_prepare+0x580/0x590 [ 59.788255][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.795047][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.800682][ T1154] ? do_writepages+0xfa/0x2a0 [ 59.805353][ T1154] do_writepages+0xfa/0x2a0 [ 59.809858][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 59.815492][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 59.820522][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 59.829216][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 59.834071][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 59.839787][ T1154] ? collapse_file+0x3575/0x4300 [ 59.844722][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 59.850795][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 59.855987][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.861967][ T1154] collapse_file+0x357f/0x4300 [ 59.866744][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 59.872114][ T1154] ? retint_kernel+0x2b/0x2b [ 59.876996][ T1154] ? khugepaged_find_target_node+0x8a/0x160 [ 59.880838][ T6920] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6920 [ 59.883157][ T1154] khugepaged+0x3049/0x3f80 [ 59.883210][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.892243][ T6920] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.896695][ T1154] ? lock_downgrade+0x840/0x840 [ 59.912988][ T1154] ? finish_wait+0x260/0x260 [ 59.917561][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.923346][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.929309][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 59.934316][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.939927][ T1154] kthread+0x388/0x470 [ 59.943976][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.949673][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.955376][ T1154] ret_from_fork+0x24/0x30 [ 59.959809][ T6920] CPU: 0 PID: 6920 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 59.967786][ T6920] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.977842][ T6920] Call Trace: [ 59.981138][ T6920] dump_stack+0x188/0x20d [ 59.985496][ T6920] debug_smp_processor_id.cold+0x88/0x9b [ 59.991133][ T6920] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.996265][ T6920] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.001744][ T6920] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.007472][ T6920] ext4_ext_map_blocks+0x2044/0x3410 [ 60.012766][ T6920] ? ext4_ext_release+0x10/0x10 [ 60.017637][ T6920] ? __down_timeout+0x2d0/0x2d0 [ 60.022491][ T6920] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.027957][ T6920] ext4_map_blocks+0x4cb/0x1640 [ 60.032934][ T6920] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.038147][ T6920] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.043692][ T6920] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.049702][ T6920] ? prandom_u32_state+0xe/0x170 [ 60.054639][ T6920] ? __brelse+0x84/0xa0 [ 60.058812][ T6920] ? __ext4_new_inode+0x144/0x57c0 [ 60.064289][ T6920] ext4_getblk+0xad/0x520 [ 60.068628][ T6920] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.074541][ T6920] ? ext4_free_inode+0x17e0/0x17e0 [ 60.079667][ T6920] ext4_bread+0x7c/0x380 [ 60.083923][ T6920] ? ext4_getblk+0x520/0x520 [ 60.088523][ T6920] ? dqget+0xff0/0xff0 [ 60.091775][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 60.092777][ T6920] ext4_append+0x153/0x360 [ 60.092795][ T6920] ext4_mkdir+0x5e0/0xdf0 [ 60.092816][ T6920] ? ext4_rmdir+0xde0/0xde0 [ 60.092835][ T6920] ? security_inode_permission+0xc4/0xf0 [ 60.092856][ T6920] vfs_mkdir+0x419/0x690 [ 60.092880][ T6920] do_mkdirat+0x21e/0x280 [ 60.101963][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.106274][ T6920] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.140143][ T6920] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.146116][ T6920] ? do_syscall_64+0x21/0x7d0 [ 60.150772][ T6920] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.156736][ T6920] do_syscall_64+0xf6/0x7d0 [ 60.161223][ T6920] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.167092][ T6920] RIP: 0033:0x4b02a0 [ 60.170978][ T6920] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 60.190994][ T6920] RSP: 002b:000000c0000e14b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 60.199472][ T6920] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 60.207550][ T6920] RDX: 00000000000001c0 RSI: 000000c0000eaa80 RDI: ffffffffffffff9c [ 60.215531][ T6920] RBP: 000000c0000e1510 R08: 0000000000000000 R09: 0000000000000000 [ 60.223572][ T6920] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 60.232234][ T6920] R13: 0000000000000055 R14: 0000000000000054 R15: 0000000000000100 [ 60.240219][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 60.248372][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.258424][ T1154] Call Trace: [ 60.261701][ T1154] dump_stack+0x188/0x20d [ 60.266012][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 60.271663][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.276762][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.282200][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 60.288327][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 60.293602][ T1154] ? ext4_ext_release+0x10/0x10 [ 60.298445][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 60.303270][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.308704][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 60.313561][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.318769][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 60.324215][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.329786][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.335744][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.341182][ T1154] ext4_writepages+0x1ab7/0x3400 [ 60.346203][ T1154] ? lockdep_hardirqs_on_prepare+0x580/0x590 [ 60.352172][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.357803][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.363410][ T1154] ? do_writepages+0xfa/0x2a0 [ 60.368070][ T1154] do_writepages+0xfa/0x2a0 [ 60.375857][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 60.381469][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 60.386470][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 60.391834][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 60.396660][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.402615][ T1154] ? collapse_file+0x3575/0x4300 [ 60.407531][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 60.413579][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 60.418771][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.424791][ T1154] collapse_file+0x357f/0x4300 [ 60.429632][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 60.434999][ T1154] ? retint_kernel+0x2b/0x2b [ 60.439615][ T1154] ? khugepaged_find_target_node+0x8a/0x160 [ 60.445593][ T1154] khugepaged+0x3049/0x3f80 [ 60.450092][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.456151][ T1154] ? lock_downgrade+0x840/0x840 [ 60.460989][ T1154] ? finish_wait+0x260/0x260 [ 60.465623][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.471413][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.477383][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 60.482390][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.487999][ T1154] kthread+0x388/0x470 [ 60.492060][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.497753][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.503464][ T1154] ret_from_fork+0x24/0x30 [ 60.533476][ T6936] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6936 [ 60.543154][ T6936] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.549058][ T6936] CPU: 0 PID: 6936 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.555983][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 60.557288][ T6936] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.566475][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.576581][ T6936] Call Trace: [ 60.576602][ T6936] dump_stack+0x188/0x20d [ 60.576619][ T6936] debug_smp_processor_id.cold+0x88/0x9b [ 60.576632][ T6936] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.576666][ T6936] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.576679][ T6936] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.576699][ T6936] ext4_ext_map_blocks+0x2044/0x3410 [ 60.576720][ T6936] ? ext4_ext_release+0x10/0x10 [ 60.576750][ T6936] ? __down_timeout+0x2d0/0x2d0 [ 60.627000][ T6936] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.632447][ T6936] ext4_map_blocks+0x4cb/0x1640 [ 60.637290][ T6936] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.642558][ T6936] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.648089][ T6936] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.654050][ T6936] ? prandom_u32_state+0xe/0x170 [ 60.659032][ T6936] ? __brelse+0x84/0xa0 [ 60.663175][ T6936] ? __ext4_new_inode+0x144/0x57c0 [ 60.668291][ T6936] ext4_getblk+0xad/0x520 [ 60.672633][ T6936] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.683460][ T6936] ? ext4_free_inode+0x17e0/0x17e0 [ 60.688559][ T6936] ext4_bread+0x7c/0x380 [ 60.692796][ T6936] ? ext4_getblk+0x520/0x520 [ 60.697451][ T6936] ? dqget+0xff0/0xff0 [ 60.701508][ T6936] ext4_append+0x153/0x360 [ 60.705923][ T6936] ext4_mkdir+0x5e0/0xdf0 [ 60.710240][ T6936] ? ext4_rmdir+0xde0/0xde0 [ 60.714730][ T6936] ? security_inode_permission+0xc4/0xf0 [ 60.720352][ T6936] vfs_mkdir+0x419/0x690 [ 60.724599][ T6936] do_mkdirat+0x21e/0x280 [ 60.729008][ T6936] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.733840][ T6936] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.739801][ T6936] ? do_syscall_64+0x21/0x7d0 [ 60.744458][ T6936] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.750423][ T6936] do_syscall_64+0xf6/0x7d0 [ 60.754910][ T6936] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.760781][ T6936] RIP: 0033:0x45bee7 [ 60.764656][ T6936] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 60.784456][ T6936] RSP: 002b:00007ffd5fb1e638 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 60.792915][ T6936] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 60.801048][ T6936] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffd5fb1e810 [ 60.809021][ T6936] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 00000000000031c0 [ 60.816992][ T6936] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 60.824950][ T6936] R13: 00007ffd5fb1e810 R14: 8421084210842109 R15: 00007ffd5fb1e81c [ 60.832929][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 60.840826][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.850882][ T1154] Call Trace: [ 60.854179][ T1154] dump_stack+0x188/0x20d [ 60.858515][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 60.864144][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.869266][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.875171][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 60.881367][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 60.886692][ T1154] ? ext4_ext_release+0x10/0x10 [ 60.891562][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 60.896416][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.901881][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 60.906739][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.911939][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 60.917400][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.922952][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.928937][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.934403][ T1154] ext4_writepages+0x1ab7/0x3400 [ 60.939349][ T1154] ? lockdep_hardirqs_on_prepare+0x580/0x590 [ 60.944840][ T6937] IPVS: ftp: loaded support on port[0] = 21 [ 60.945357][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.956866][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.962499][ T1154] ? do_writepages+0xfa/0x2a0 [ 60.967698][ T1154] do_writepages+0xfa/0x2a0 [ 60.972221][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 60.977859][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 60.982985][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 60.988187][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 60.993045][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.996159][ T6937] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6937 [ 60.998774][ T1154] ? collapse_file+0x3575/0x4300 [ 61.008165][ T6937] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.013044][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 61.013067][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.013082][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.013103][ T1154] collapse_file+0x357f/0x4300 [ 61.013134][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 61.046251][ T1154] ? retint_kernel+0x2b/0x2b [ 61.050841][ T1154] ? khugepaged_find_target_node+0x8a/0x160 [ 61.056722][ T1154] khugepaged+0x3049/0x3f80 [ 61.061227][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.066842][ T1154] ? lock_downgrade+0x840/0x840 [ 61.071699][ T1154] ? finish_wait+0x260/0x260 [ 61.076285][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.082357][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.088348][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 61.093388][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.099004][ T1154] kthread+0x388/0x470 [ 61.103054][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.108752][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.114468][ T1154] ret_from_fork+0x24/0x30 [ 61.118895][ T6937] CPU: 0 PID: 6937 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.127308][ T6937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.137355][ T6937] Call Trace: [ 61.140651][ T6937] dump_stack+0x188/0x20d [ 61.144987][ T6937] debug_smp_processor_id.cold+0x88/0x9b [ 61.150618][ T6937] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.155755][ T6937] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.161214][ T6937] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.166929][ T6937] ext4_ext_map_blocks+0x2044/0x3410 [ 61.172299][ T6937] ? ext4_ext_release+0x10/0x10 [ 61.177367][ T6937] ? __down_timeout+0x2d0/0x2d0 [ 61.182228][ T6937] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.187699][ T6937] ext4_map_blocks+0x4cb/0x1640 [ 61.192549][ T6937] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.197938][ T6937] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.203465][ T6937] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.209420][ T6937] ? prandom_u32_state+0xe/0x170 [ 61.214399][ T6937] ? __brelse+0x84/0xa0 [ 61.218533][ T6937] ? __ext4_new_inode+0x144/0x57c0 [ 61.223622][ T6937] ext4_getblk+0xad/0x520 [ 61.227948][ T6937] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.233839][ T6937] ? ext4_free_inode+0x17e0/0x17e0 [ 61.239369][ T6937] ext4_bread+0x7c/0x380 [ 61.243604][ T6937] ? ext4_getblk+0x520/0x520 [ 61.248241][ T6937] ? dqget+0xff0/0xff0 [ 61.252295][ T6937] ext4_append+0x153/0x360 [ 61.256694][ T6937] ext4_mkdir+0x5e0/0xdf0 [ 61.261047][ T6937] ? ext4_rmdir+0xde0/0xde0 [ 61.265531][ T6937] ? security_inode_permission+0xc4/0xf0 [ 61.271143][ T6937] vfs_mkdir+0x419/0x690 [ 61.275365][ T6937] do_mkdirat+0x21e/0x280 [ 61.280714][ T6937] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.285541][ T6937] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.291504][ T6937] ? do_syscall_64+0x21/0x7d0 [ 61.296167][ T6937] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.302210][ T6937] do_syscall_64+0xf6/0x7d0 [ 61.306691][ T6937] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.312645][ T6937] RIP: 0033:0x45bee7 [ 61.316529][ T6937] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 61.336109][ T6937] RSP: 002b:00007ffd5fb1e528 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 61.344508][ T6937] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 61.352454][ T6937] RDX: 00007ffd5fb1e573 RSI: 00000000000001ff RDI: 00007ffd5fb1e570 [ 61.360659][ T6937] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 61.368604][ T6937] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 61.376551][ T6937] R13: 00007ffd5fb1e560 R14: 0000000000000000 R15: 00007ffd5fb1e570 [ 61.424901][ T6937] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6937 [ 61.434631][ T6937] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.440530][ T6937] CPU: 1 PID: 6937 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.448771][ T6937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.458847][ T6937] Call Trace: [ 61.462140][ T6937] dump_stack+0x188/0x20d [ 61.466481][ T6937] debug_smp_processor_id.cold+0x88/0x9b [ 61.472114][ T6937] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.477244][ T6937] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.483061][ T6937] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.488785][ T6937] ext4_ext_map_blocks+0x2044/0x3410 [ 61.494170][ T6937] ? ext4_ext_release+0x10/0x10 [ 61.499020][ T6937] ? __down_timeout+0x2d0/0x2d0 [ 61.503855][ T6937] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.509302][ T6937] ext4_map_blocks+0x4cb/0x1640 [ 61.514136][ T6937] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.519353][ T6937] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.524913][ T6937] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.530869][ T6937] ? prandom_u32_state+0xe/0x170 [ 61.535821][ T6937] ? __brelse+0x84/0xa0 [ 61.539951][ T6937] ? __ext4_new_inode+0x144/0x57c0 [ 61.545040][ T6937] ext4_getblk+0xad/0x520 [ 61.549864][ T6937] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.555579][ T6937] ? ext4_free_inode+0x17e0/0x17e0 [ 61.561060][ T6937] ext4_bread+0x7c/0x380 [ 61.565279][ T6937] ? ext4_getblk+0x520/0x520 [ 61.569861][ T6937] ? dqget+0xff0/0xff0 [ 61.573976][ T6937] ext4_append+0x153/0x360 [ 61.578387][ T6937] ext4_mkdir+0x5e0/0xdf0 [ 61.582728][ T6937] ? ext4_rmdir+0xde0/0xde0 [ 61.587213][ T6937] ? security_inode_permission+0xc4/0xf0 [ 61.592826][ T6937] vfs_mkdir+0x419/0x690 [ 61.597068][ T6937] do_mkdirat+0x21e/0x280 [ 61.601386][ T6937] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.606230][ T6937] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.613315][ T6937] ? do_syscall_64+0x21/0x7d0 [ 61.617977][ T6937] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.623935][ T6937] do_syscall_64+0xf6/0x7d0 [ 61.628416][ T6937] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.634282][ T6937] RIP: 0033:0x45bee7 [ 61.638162][ T6937] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 61.657742][ T6937] RSP: 002b:00007ffd5fb1e528 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 61.666128][ T6937] RAX: ffffffffffffffda RBX: 000000000000efe7 RCX: 000000000045bee7 2020/06/13 02:34:09 building call list... [ 61.674085][ T6937] RDX: 00007ffd5fb1e573 RSI: 00000000000001ff RDI: 00007ffd5fb1e570 [ 61.682552][ T6937] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 61.690503][ T6937] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 61.698452][ T6937] R13: 00007ffd5fb1e560 R14: 000000000000efdb R15: 00007ffd5fb1e570 [ 61.941431][ T7] tipc: TX() has been purged, node left! executing program [ 63.477554][ T6922] can: request_module (can-proto-0) failed. [ 63.945617][ T6922] can: request_module (can-proto-0) failed. [ 63.957486][ T6922] can: request_module (can-proto-0) failed.