[ 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 Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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... [ 63.390448][ T6724] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6724 [ 63.400316][ T6724] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 63.400332][ T6724] CPU: 0 PID: 6724 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 63.400347][ T6724] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.425219][ T6724] Call Trace: [ 63.429235][ T6724] dump_stack+0x18f/0x20d [ 63.433591][ T6724] debug_smp_processor_id.cold+0x88/0x9b [[ 63.439253][ T6724] ext4_mb_new_blocks+0xa77/0x3b30 [ 63.444466][ T6724] ? ext4_ext_search_right+0x2ca/0xb20  OK [0[ 63.449989][ T6724] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 63.457174][ T6724] ext4_ext_map_blocks+0x2044/0x3410 m] [ 63.462489][ T6724] ? ext4_ext_release+0x10/0x10 [ 63.467600][ T6724] ? __down_timeout+0x2d0/0x2d0 [ 63.472467][ T6724] ? ext4_es_lookup_extent+0x41d/0xd30 [ 63.478116][ T6724] ext4_map_blocks+0x4cb/0x1640 [ 63.483006][ T6724] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 63.488223][ T6724] ? rcu_read_lock_sched_held+0x9c/0xd0 Started Update U[ 63.493840][ T6724] ? rcu_read_lock_any_held.part.0+0x50/0x50 TMP about System[ 63.501193][ T6724] ? prandom_u32_state+0xe/0x170 [ 63.507555][ T6724] ? __brelse+0x84/0xa0 [ 63.511717][ T6724] ? __ext4_new_inode+0x144/0x57c0 [ 63.517118][ T6724] ext4_getblk+0xad/0x520 [ 63.521580][ T6724] ? ext4_iomap_overwrite_begin+0xa0/0xa0 Runlevel Change[ 63.527365][ T6724] ? ext4_free_inode+0x17e0/0x17e0 [ 63.533864][ T6724] ext4_bread+0x7c/0x380 s. [ 63.538122][ T6724] ? ext4_getblk+0x520/0x520 [ 63.543081][ T6724] ? dqget+0xff0/0xff0 [ 63.547202][ T6724] ext4_append+0x153/0x360 [ 63.552090][ T6724] ext4_mkdir+0x5e0/0xdf0 [ 63.556457][ T6724] ? ext4_rmdir+0xde0/0xde0 [ 63.561000][ T6724] vfs_mkdir+0x419/0x690 [ 63.565268][ T6724] do_mkdirat+0x21e/0x280 [ 63.569661][ T6724] ? __ia32_sys_mknod+0xb0/0xb0 [ 63.574610][ T6724] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.580704][ T6724] ? do_syscall_64+0x21/0x7d0 [ 63.585673][ T6724] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.591752][ T6724] do_syscall_64+0xf6/0x7d0 [ 63.596269][ T6724] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 63.602152][ T6724] RIP: 0033:0x7fc488153687 [ 63.606540][ T6724] Code: Bad RIP value. [ 63.610597][ T6724] RSP: 002b:00007fffc165c4d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 63.618990][ T6724] RAX: ffffffffffffffda RBX: 000055df97011985 RCX: 00007fc488153687 [ 63.626961][ T6724] RDX: 00007fffc165c3a0 RSI: 00000000000001ed RDI: 000055df97011985 [ 63.634917][ T6724] RBP: 00007fc488153680 R08: 0000000000000100 R09: 0000000000000000 [ 63.642962][ T6724] R10: 000055df97011980 R11: 0000000000000246 R12: 00000000000001ed [ 63.651358][ T6724] R13: 00007fffc165c660 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.102' (ECDSA) to the list of known hosts. 2020/06/10 06:50:06 fuzzer started 2020/06/10 06:50:07 connecting to host at 10.128.0.26:46591 2020/06/10 06:50:07 checking machine... 2020/06/10 06:50:07 checking revisions... 2020/06/10 06:50:07 testing simple program... syzkaller login: [ 67.375180][ T6795] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6795 [ 67.384431][ T6795] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 67.390771][ T6795] CPU: 0 PID: 6795 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 67.398826][ T6795] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.408886][ T6795] Call Trace: [ 67.412181][ T6795] dump_stack+0x18f/0x20d [ 67.416509][ T6795] debug_smp_processor_id.cold+0x88/0x9b [ 67.422137][ T6795] ext4_mb_new_blocks+0xa77/0x3b30 [ 67.427247][ T6795] ? ext4_ext_search_right+0x2ca/0xb20 [ 67.432683][ T6795] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 67.438447][ T6795] ext4_ext_map_blocks+0x2044/0x3410 [ 67.443835][ T6795] ? ext4_ext_release+0x10/0x10 [ 67.449038][ T6795] ? __down_timeout+0x2d0/0x2d0 [ 67.453873][ T6795] ? ext4_es_lookup_extent+0x41d/0xd30 [ 67.459439][ T6795] ext4_map_blocks+0x4cb/0x1640 [ 67.464390][ T6795] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 67.469587][ T6795] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 67.475141][ T6795] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 67.481135][ T6795] ? prandom_u32_state+0xe/0x170 [ 67.486073][ T6795] ? __brelse+0x84/0xa0 [ 67.490227][ T6795] ? __ext4_new_inode+0x144/0x57c0 [ 67.495341][ T6795] ext4_getblk+0xad/0x520 [ 67.499815][ T6795] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 67.505557][ T6795] ? ext4_free_inode+0x17e0/0x17e0 [ 67.510912][ T6795] ext4_bread+0x7c/0x380 [ 67.515136][ T6795] ? ext4_getblk+0x520/0x520 [ 67.519701][ T6795] ? dqget+0xff0/0xff0 [ 67.523766][ T6795] ext4_append+0x153/0x360 [ 67.528163][ T6795] ext4_mkdir+0x5e0/0xdf0 [ 67.532475][ T6795] ? ext4_rmdir+0xde0/0xde0 [ 67.536964][ T6795] vfs_mkdir+0x419/0x690 [ 67.541225][ T6795] do_mkdirat+0x21e/0x280 [ 67.545556][ T6795] ? __ia32_sys_mknod+0xb0/0xb0 [ 67.550402][ T6795] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 67.556470][ T6795] ? do_syscall_64+0x21/0x7d0 [ 67.561145][ T6795] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 67.567119][ T6795] do_syscall_64+0xf6/0x7d0 [ 67.571615][ T6795] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 67.577485][ T6795] RIP: 0033:0x4b02a0 [ 67.581361][ T6795] Code: Bad RIP value. [ 67.585402][ T6795] RSP: 002b:000000c0000cd4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 67.593802][ T6795] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 67.601766][ T6795] RDX: 00000000000001c0 RSI: 000000c000026b80 RDI: ffffffffffffff9c [ 67.609716][ T6795] RBP: 000000c0000cd510 R08: 0000000000000000 R09: 0000000000000000 [ 67.617679][ T6795] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 67.625630][ T6795] R13: 000000000000005d R14: 000000000000005c R15: 0000000000000100 [ 67.639648][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 67.648945][ T1157] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 67.655235][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 67.662924][ T28] audit: type=1400 audit(1591771807.517:8): avc: denied { execmem } for pid=6812 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 67.663158][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.692566][ T6812] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6812 [ 67.700001][ T1157] Call Trace: [ 67.709448][ T6812] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 67.712630][ T1157] dump_stack+0x18f/0x20d [ 67.712649][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 67.712663][ T1157] ext4_mb_new_blocks+0xa77/0x3b30 [ 67.712677][ T1157] ? __kmalloc+0x62f/0x7a0 [ 67.712700][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 67.712714][ T1157] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 67.712737][ T1157] ext4_ext_map_blocks+0x2044/0x3410 [ 67.754893][ T1157] ? ext4_ext_release+0x10/0x10 [ 67.759829][ T1157] ? __down_timeout+0x2d0/0x2d0 [ 67.764660][ T1157] ? ext4_es_lookup_extent+0x41d/0xd30 [ 67.770105][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 67.774955][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 67.780319][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 67.785766][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 67.791294][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 67.797268][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 67.802725][ T1157] ext4_writepages+0x1ab7/0x3400 [ 67.807649][ T1157] ? mark_lock+0x50/0xdd0 [ 67.811971][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 67.817611][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 67.823226][ T1157] ? do_writepages+0xfa/0x2a0 [ 67.827970][ T1157] do_writepages+0xfa/0x2a0 [ 67.832494][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 67.838124][ T1157] ? do_raw_spin_lock+0x129/0x2e0 [ 67.843144][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 67.848335][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 67.853170][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 67.858906][ T1157] ? collapse_file+0x3575/0x4300 [ 67.863829][ T1157] ? delete_from_page_cache_batch+0xec0/0xec0 [ 67.871188][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 67.876379][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 67.882347][ T1157] collapse_file+0x357f/0x4300 [ 67.887106][ T1157] ? collapse_huge_page+0x4370/0x4370 [ 67.892479][ T1157] ? khugepaged+0x24fa/0x3f80 [ 67.897150][ T1157] ? devlink_nl_cmd_port_param_get_dumpit+0x518/0x550 [ 67.903900][ T1157] khugepaged+0x3049/0x3f80 [ 67.908417][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 67.914034][ T1157] ? lock_downgrade+0x840/0x840 [ 67.918868][ T1157] ? finish_wait+0x260/0x260 [ 67.923441][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 67.929317][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 67.935283][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 67.940291][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 67.945906][ T1157] kthread+0x388/0x470 [ 67.949973][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 67.955688][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 67.962360][ T1157] ret_from_fork+0x24/0x30 [ 67.966788][ T6812] CPU: 1 PID: 6812 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 67.975294][ T6812] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.985359][ T6812] Call Trace: [ 67.988752][ T6812] dump_stack+0x18f/0x20d [ 67.993109][ T6812] debug_smp_processor_id.cold+0x88/0x9b [ 67.998743][ T6812] ext4_mb_new_blocks+0xa77/0x3b30 [ 68.003863][ T6812] ? ext4_ext_search_right+0x2ca/0xb20 [ 68.009350][ T6812] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 68.015299][ T6812] ext4_ext_map_blocks+0x2044/0x3410 [ 68.020643][ T6812] ? ext4_ext_release+0x10/0x10 [ 68.025494][ T6812] ? __down_timeout+0x2d0/0x2d0 [ 68.030327][ T6812] ? ext4_es_lookup_extent+0x41d/0xd30 [ 68.035769][ T6812] ext4_map_blocks+0x4cb/0x1640 [ 68.040600][ T6812] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 68.045784][ T6812] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 68.051307][ T6812] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 68.057271][ T6812] ? prandom_u32_state+0xe/0x170 [ 68.062288][ T6812] ? __brelse+0x84/0xa0 [ 68.066420][ T6812] ? __ext4_new_inode+0x144/0x57c0 [ 68.071513][ T6812] ext4_getblk+0xad/0x520 [ 68.075834][ T6812] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 68.081538][ T6812] ? ext4_free_inode+0x17e0/0x17e0 [ 68.086637][ T6812] ext4_bread+0x7c/0x380 [ 68.090858][ T6812] ? ext4_getblk+0x520/0x520 [ 68.095436][ T6812] ? dqget+0xff0/0xff0 [ 68.099655][ T6812] ? security_transition_sid+0x123/0x190 [ 68.105352][ T6812] ? security_transition_sid+0xed/0x190 [ 68.110982][ T6812] ext4_append+0x153/0x360 [ 68.115391][ T6812] ext4_mkdir+0x5e0/0xdf0 [ 68.119724][ T6812] ? ext4_rmdir+0xde0/0xde0 [ 68.124250][ T6812] vfs_mkdir+0x419/0x690 [ 68.128479][ T6812] do_mkdirat+0x21e/0x280 [ 68.132794][ T6812] ? __ia32_sys_mknod+0xb0/0xb0 [ 68.137791][ T6812] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 68.143781][ T6812] ? do_syscall_64+0x21/0x7d0 [ 68.148450][ T6812] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 68.154434][ T6812] do_syscall_64+0xf6/0x7d0 [ 68.159091][ T6812] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 68.164968][ T6812] RIP: 0033:0x45bee7 [ 68.168835][ T6812] Code: Bad RIP value. [ 68.172885][ T6812] RSP: 002b:00007ffff5e42a78 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 68.181487][ T6812] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 68.189447][ T6812] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffff5e42c50 [ 68.197413][ T6812] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 00000000000035c0 [ 68.205648][ T6812] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 68.213695][ T6812] R13: 00007ffff5e42c50 R14: 8421084210842109 R15: 00007ffff5e42c5c [ 68.264293][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 68.273951][ T1157] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 68.279884][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 68.287951][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.298022][ T1157] Call Trace: [ 68.301322][ T1157] dump_stack+0x18f/0x20d [ 68.305667][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 68.311308][ T1157] ext4_mb_new_blocks+0xa77/0x3b30 [ 68.316440][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 68.320541][ T6814] IPVS: ftp: loaded support on port[0] = 21 [ 68.322166][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 68.322184][ T1157] ext4_ext_map_blocks+0x2044/0x3410 [ 68.322205][ T1157] ? ext4_ext_release+0x10/0x10 [ 68.322234][ T1157] ? __down_timeout+0x2d0/0x2d0 [ 68.322245][ T1157] ? ext4_es_lookup_extent+0x41d/0xd30 [ 68.322265][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 68.359626][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 68.364833][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 68.370314][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 68.375876][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 68.376590][ T6814] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6814 [ 68.381859][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 68.391296][ T6814] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 68.396677][ T1157] ext4_writepages+0x1ab7/0x3400 [ 68.396697][ T1157] ? mark_lock+0x50/0xdd0 [ 68.396723][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 68.396764][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 68.423716][ T1157] ? do_writepages+0xfa/0x2a0 [ 68.428396][ T1157] do_writepages+0xfa/0x2a0 [ 68.432890][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 68.438515][ T1157] ? do_raw_spin_lock+0x129/0x2e0 [ 68.443522][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 68.448708][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 68.453546][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 68.459254][ T1157] ? collapse_file+0x3575/0x4300 [ 68.464345][ T1157] ? delete_from_page_cache_batch+0xec0/0xec0 [ 68.470399][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 68.475596][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 68.481567][ T1157] collapse_file+0x357f/0x4300 [ 68.486776][ T1157] ? collapse_huge_page+0x4370/0x4370 [ 68.492139][ T1157] ? khugepaged+0x24fa/0x3f80 [ 68.496814][ T1157] ? devlink_nl_cmd_port_param_get_dumpit+0x518/0x550 [ 68.503647][ T1157] khugepaged+0x3049/0x3f80 [ 68.508152][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 68.513901][ T1157] ? lock_downgrade+0x840/0x840 [ 68.518997][ T1157] ? finish_wait+0x260/0x260 [ 68.523572][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 68.529371][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 68.535345][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 68.540361][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 68.545984][ T1157] kthread+0x388/0x470 [ 68.550041][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 68.555759][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 68.561495][ T1157] ret_from_fork+0x24/0x30 [ 68.565910][ T6814] CPU: 1 PID: 6814 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 68.574158][ T6814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.584210][ T6814] Call Trace: [ 68.587501][ T6814] dump_stack+0x18f/0x20d [ 68.592076][ T6814] debug_smp_processor_id.cold+0x88/0x9b [ 68.597709][ T6814] ext4_mb_new_blocks+0xa77/0x3b30 [ 68.602810][ T6814] ? ext4_ext_search_right+0x2ca/0xb20 [ 68.608359][ T6814] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 68.614084][ T6814] ext4_ext_map_blocks+0x2044/0x3410 [ 68.619365][ T6814] ? ext4_ext_release+0x10/0x10 [ 68.624216][ T6814] ? __down_timeout+0x2d0/0x2d0 [ 68.629044][ T6814] ? ext4_es_lookup_extent+0x41d/0xd30 [ 68.634494][ T6814] ext4_map_blocks+0x4cb/0x1640 [ 68.639332][ T6814] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 68.644508][ T6814] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 68.650029][ T6814] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 68.655995][ T6814] ? prandom_u32_state+0xe/0x170 [ 68.660910][ T6814] ? __brelse+0x84/0xa0 [ 68.665042][ T6814] ? __ext4_new_inode+0x144/0x57c0 [ 68.670141][ T6814] ext4_getblk+0xad/0x520 [ 68.674471][ T6814] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 68.680168][ T6814] ? ext4_free_inode+0x17e0/0x17e0 [ 68.685257][ T6814] ext4_bread+0x7c/0x380 [ 68.689473][ T6814] ? ext4_getblk+0x520/0x520 [ 68.694054][ T6814] ? dqget+0xff0/0xff0 [ 68.698107][ T6814] ? security_transition_sid+0x123/0x190 [ 68.703765][ T6814] ? security_transition_sid+0xed/0x190 [ 68.709319][ T6814] ext4_append+0x153/0x360 [ 68.713746][ T6814] ext4_mkdir+0x5e0/0xdf0 [ 68.718086][ T6814] ? ext4_rmdir+0xde0/0xde0 [ 68.722640][ T6814] vfs_mkdir+0x419/0x690 [ 68.726896][ T6814] do_mkdirat+0x21e/0x280 [ 68.731231][ T6814] ? __ia32_sys_mknod+0xb0/0xb0 [ 68.736085][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 68.742073][ T6814] ? do_syscall_64+0x21/0x7d0 [ 68.746854][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 68.752850][ T6814] do_syscall_64+0xf6/0x7d0 [ 68.757363][ T6814] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 68.763349][ T6814] RIP: 0033:0x45bee7 [ 68.767323][ T6814] Code: Bad RIP value. [ 68.771414][ T6814] RSP: 002b:00007ffff5e42968 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 68.779830][ T6814] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 68.787803][ T6814] RDX: 00007ffff5e429b3 RSI: 00000000000001ff RDI: 00007ffff5e429b0 [ 68.795783][ T6814] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 68.803756][ T6814] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 68.812700][ T6814] R13: 00007ffff5e429a0 R14: 0000000000000000 R15: 00007ffff5e429b0 [ 68.823669][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 68.832778][ T1157] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 68.839031][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 68.846900][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.856948][ T1157] Call Trace: [ 68.860351][ T1157] dump_stack+0x18f/0x20d [ 68.864711][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 68.870349][ T1157] ext4_mb_new_blocks+0xa77/0x3b30 [ 68.875471][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 68.880949][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 68.887114][ T1157] ext4_ext_map_blocks+0x2044/0x3410 [ 68.892414][ T1157] ? ext4_ext_release+0x10/0x10 [ 68.897290][ T1157] ? __down_timeout+0x2d0/0x2d0 [ 68.902251][ T1157] ? ext4_es_lookup_extent+0x41d/0xd30 [ 68.907751][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 68.912615][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 68.917820][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 68.923289][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 68.928849][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 68.934839][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 68.940315][ T1157] ext4_writepages+0x1ab7/0x3400 [ 68.946304][ T1157] ? mark_lock+0x50/0xdd0 [ 68.950657][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 68.956435][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 68.962540][ T1157] ? do_writepages+0xfa/0x2a0 [ 68.967230][ T1157] do_writepages+0xfa/0x2a0 [ 68.971759][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 68.977400][ T1157] ? do_raw_spin_lock+0x129/0x2e0 [ 68.982437][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 68.987649][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 68.992511][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 68.997932][ T6814] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6814 [ 68.998235][ T1157] ? collapse_file+0x3575/0x4300 [ 69.007652][ T6814] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 69.012500][ T1157] ? delete_from_page_cache_batch+0xec0/0xec0 [ 69.012523][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 69.012537][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 69.012558][ T1157] collapse_file+0x357f/0x4300 [ 69.012587][ T1157] ? collapse_huge_page+0x4370/0x4370 [ 69.012601][ T1157] ? khugepaged+0x24fa/0x3f80 [ 69.012627][ T1157] ? devlink_nl_cmd_port_param_get_dumpit+0x518/0x550 [ 69.012644][ T1157] khugepaged+0x3049/0x3f80 [ 69.062284][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 69.068179][ T1157] ? lock_downgrade+0x840/0x840 [ 69.073016][ T1157] ? finish_wait+0x260/0x260 [ 69.077594][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 69.083384][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 69.089609][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 69.094636][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 69.100255][ T1157] kthread+0x388/0x470 [ 69.104354][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 69.110069][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 69.115884][ T1157] ret_from_fork+0x24/0x30 [ 69.120491][ T6814] CPU: 1 PID: 6814 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 69.128909][ T6814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.139572][ T6814] Call Trace: [ 69.142868][ T6814] dump_stack+0x18f/0x20d [ 69.147208][ T6814] debug_smp_processor_id.cold+0x88/0x9b [ 69.152843][ T6814] ext4_mb_new_blocks+0xa77/0x3b30 [ 69.157966][ T6814] ? ext4_ext_search_right+0x2ca/0xb20 [ 69.163458][ T6814] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 69.169187][ T6814] ext4_ext_map_blocks+0x2044/0x3410 [ 69.174487][ T6814] ? ext4_ext_release+0x10/0x10 [ 69.179355][ T6814] ? __down_timeout+0x2d0/0x2d0 [ 69.184202][ T6814] ? ext4_es_lookup_extent+0x41d/0xd30 [ 69.189683][ T6814] ext4_map_blocks+0x4cb/0x1640 [ 69.194524][ T6814] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 69.199791][ T6814] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 69.205329][ T6814] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 69.211293][ T6814] ? prandom_u32_state+0xe/0x170 [ 69.216214][ T6814] ? __brelse+0x84/0xa0 [ 69.220358][ T6814] ? __ext4_new_inode+0x144/0x57c0 [ 69.225450][ T6814] ext4_getblk+0xad/0x520 [ 69.229768][ T6814] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 69.235465][ T6814] ? ext4_free_inode+0x17e0/0x17e0 [ 69.240551][ T6814] ext4_bread+0x7c/0x380 [ 69.244769][ T6814] ? ext4_getblk+0x520/0x520 [ 69.249345][ T6814] ? dqget+0xff0/0xff0 [ 69.253391][ T6814] ? security_transition_sid+0x123/0x190 [ 69.259006][ T6814] ? security_transition_sid+0xed/0x190 [ 69.264560][ T6814] ext4_append+0x153/0x360 [ 69.268965][ T6814] ext4_mkdir+0x5e0/0xdf0 [ 69.273297][ T6814] ? ext4_rmdir+0xde0/0xde0 [ 69.277794][ T6814] vfs_mkdir+0x419/0x690 [ 69.282116][ T6814] do_mkdirat+0x21e/0x280 [ 69.286428][ T6814] ? __ia32_sys_mknod+0xb0/0xb0 [ 69.291255][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 69.297233][ T6814] ? do_syscall_64+0x21/0x7d0 [ 69.301896][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 69.307881][ T6814] do_syscall_64+0xf6/0x7d0 [ 69.312381][ T6814] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 69.318258][ T6814] RIP: 0033:0x45bee7 [ 69.322124][ T6814] Code: Bad RIP value. [ 69.326181][ T6814] RSP: 002b:00007ffff5e42968 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 69.334740][ T6814] RAX: ffffffffffffffda RBX: 0000000000010d16 RCX: 000000000045bee7 [ 69.342788][ T6814] RDX: 00007ffff5e429b3 RSI: 00000000000001ff RDI: 00007ffff5e429b0 [ 69.350748][ T6814] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 69.358843][ T6814] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 69.366808][ T6814] R13: 00007ffff5e429a0 R14: 0000000000010d12 R15: 00007ffff5e429b0 2020/06/10 06:50:09 building call list... [ 69.612152][ T57] tipc: TX() has been purged, node left! executing program [ 71.139090][ T6798] can: request_module (can-proto-0) failed. [ 71.708392][ T6798] can: request_module (can-proto-0) failed. [ 71.720732][ T6798] can: request_module (can-proto-0) failed. [ 71.768224][ T28] audit: type=1400 audit(1591771811.617:9): avc: denied { create } for pid=6795 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1