Warning: Permanently added '10.128.15.198' (ECDSA) to the list of known hosts. 2020/06/13 21:02:23 fuzzer started 2020/06/13 21:02:23 connecting to host at 10.128.0.26:45537 2020/06/13 21:02:23 checking machine... 2020/06/13 21:02:23 checking revisions... 2020/06/13 21:02:23 testing simple program... syzkaller login: [ 75.423251][ T6818] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6818 [ 75.432565][ T6818] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 75.438555][ T6818] CPU: 1 PID: 6818 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 75.446449][ T6818] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.456597][ T6818] Call Trace: [ 75.459884][ T6818] dump_stack+0x18f/0x20d [ 75.464213][ T6818] check_preemption_disabled+0x20d/0x220 [ 75.469824][ T6818] ext4_mb_new_blocks+0xa4d/0x3b70 [ 75.474932][ T6818] ? ext4_ext_search_right+0x2ca/0xb20 [ 75.480369][ T6818] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 75.486078][ T6818] ext4_ext_map_blocks+0x201b/0x33e0 [ 75.491359][ T6818] ? ext4_ext_release+0x10/0x10 [ 75.496194][ T6818] ? down_write_killable+0x170/0x170 [ 75.501455][ T6818] ? ext4_es_lookup_extent+0x41d/0xd10 [ 75.506992][ T6818] ext4_map_blocks+0x4cb/0x1640 [ 75.511832][ T6818] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 75.517016][ T6818] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 75.522562][ T6818] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 75.528532][ T6818] ? prandom_u32_state+0xe/0x170 [ 75.533515][ T6818] ? __brelse+0x84/0xa0 [ 75.537787][ T6818] ? __ext4_new_inode+0x144/0x55e0 [ 75.542904][ T6818] ext4_getblk+0xad/0x520 [ 75.547224][ T6818] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 75.553123][ T6818] ? ext4_free_inode+0x1700/0x1700 [ 75.558241][ T6818] ext4_bread+0x7c/0x380 [ 75.562571][ T6818] ? ext4_getblk+0x520/0x520 [ 75.567140][ T6818] ? dquot_get_next_dqblk+0x180/0x180 [ 75.573188][ T6818] ext4_append+0x153/0x360 [ 75.577680][ T6818] ext4_mkdir+0x5e0/0xdf0 [ 75.582002][ T6818] ? ext4_rmdir+0xde0/0xde0 [ 75.586513][ T6818] vfs_mkdir+0x419/0x690 [ 75.590761][ T6818] do_mkdirat+0x21e/0x280 [ 75.595242][ T6818] ? __ia32_sys_mknod+0xb0/0xb0 [ 75.600072][ T6818] ? do_syscall_64+0x1c/0xe0 [ 75.604673][ T6818] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 75.610639][ T6818] do_syscall_64+0x60/0xe0 [ 75.615048][ T6818] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 75.620932][ T6818] RIP: 0033:0x4b02a0 [ 75.624809][ T6818] Code: Bad RIP value. [ 75.628867][ T6818] RSP: 002b:000000c0000db4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 75.637515][ T6818] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 75.645475][ T6818] RDX: 00000000000001c0 RSI: 000000c00009ed40 RDI: ffffffffffffff9c [ 75.653453][ T6818] RBP: 000000c0000db510 R08: 0000000000000000 R09: 0000000000000000 [ 75.661429][ T6818] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 75.669391][ T6818] R13: 000000000000006b R14: 000000000000006a R15: 0000000000000100 [ 75.694898][ T29] audit: type=1400 audit(1592082143.980:8): avc: denied { execmem } for pid=6821 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 75.695641][ T6821] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6821 [ 75.725442][ T6821] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 75.731557][ T6821] CPU: 0 PID: 6821 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 75.739802][ T6821] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.749850][ T6821] Call Trace: [ 75.751853][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 75.753148][ T6821] dump_stack+0x18f/0x20d [ 75.753170][ T6821] check_preemption_disabled+0x20d/0x220 [ 75.762340][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 75.766656][ T6821] ext4_mb_new_blocks+0xa4d/0x3b70 [ 75.766682][ T6821] ? ext4_ext_search_right+0x2ca/0xb20 [ 75.766695][ T6821] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 75.766718][ T6821] ext4_ext_map_blocks+0x201b/0x33e0 [ 75.766743][ T6821] ? ext4_ext_release+0x10/0x10 [ 75.766774][ T6821] ? down_write_killable+0x170/0x170 [ 75.766796][ T6821] ? ext4_es_lookup_extent+0x41d/0xd10 [ 75.815594][ T6821] ext4_map_blocks+0x4cb/0x1640 [ 75.820463][ T6821] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 75.825643][ T6821] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 75.831173][ T6821] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 75.837134][ T6821] ? prandom_u32_state+0xe/0x170 [ 75.842118][ T6821] ? __brelse+0x84/0xa0 [ 75.846267][ T6821] ? __ext4_new_inode+0x144/0x55e0 [ 75.851367][ T6821] ext4_getblk+0xad/0x520 [ 75.855712][ T6821] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 75.861429][ T6821] ? ext4_free_inode+0x1700/0x1700 [ 75.866551][ T6821] ext4_bread+0x7c/0x380 [ 75.870779][ T6821] ? ext4_getblk+0x520/0x520 [ 75.875354][ T6821] ? dquot_get_next_dqblk+0x180/0x180 [ 75.880796][ T6821] ? security_transition_sid+0x123/0x190 [ 75.886411][ T6821] ? security_transition_sid+0xed/0x190 [ 75.891956][ T6821] ext4_append+0x153/0x360 [ 75.896444][ T6821] ext4_mkdir+0x5e0/0xdf0 [ 75.900946][ T6821] ? ext4_rmdir+0xde0/0xde0 [ 75.905709][ T6821] vfs_mkdir+0x419/0x690 [ 75.909966][ T6821] do_mkdirat+0x21e/0x280 [ 75.915181][ T6821] ? __ia32_sys_mknod+0xb0/0xb0 [ 75.920025][ T6821] ? do_syscall_64+0x1c/0xe0 [ 75.924802][ T6821] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 75.930875][ T6821] do_syscall_64+0x60/0xe0 [ 75.935389][ T6821] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 75.941449][ T6821] RIP: 0033:0x45bee7 [ 75.945317][ T6821] Code: Bad RIP value. [ 75.949541][ T6821] RSP: 002b:00007ffe11e8d0f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 75.957965][ T6821] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 75.965941][ T6821] RDX: 0000000000000004 RSI: 00000000000001c0 RDI: 00007ffe11e8d2d0 [ 75.973988][ T6821] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000004380 [ 75.982487][ T6821] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 75.990455][ T6821] R13: 00007ffe11e8d2d0 R14: 8421084210842109 R15: 00007ffe11e8d2dc [ 75.998471][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 76.006458][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.016517][ T1154] Call Trace: [ 76.019835][ T1154] dump_stack+0x18f/0x20d [ 76.024177][ T1154] check_preemption_disabled+0x20d/0x220 [ 76.029841][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 76.034969][ T1154] ? ext4_find_extent+0x81a/0xad0 [ 76.040050][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 76.045528][ T1154] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 76.051264][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 76.056631][ T1154] ? ext4_ext_release+0x10/0x10 [ 76.061678][ T1154] ? down_write_killable+0x170/0x170 [ 76.066984][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 76.072719][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 76.077589][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 76.082808][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 76.088629][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 76.094632][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 76.100103][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 76.105141][ T1154] ? lock_release+0x7c0/0x800 [ 76.109846][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 76.111405][ T6822] IPVS: ftp: loaded support on port[0] = 21 [ 76.115501][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 76.126992][ T1154] ? do_writepages+0xfa/0x2a0 [ 76.131673][ T1154] do_writepages+0xfa/0x2a0 [ 76.136210][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 76.141883][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 76.147008][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 76.152239][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 76.157102][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 76.162829][ T1154] ? collapse_file+0x35a2/0x4330 [ 76.167774][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 76.168474][ T6822] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6822 [ 76.173844][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 76.183236][ T6822] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 76.188365][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 76.188385][ T1154] collapse_file+0x35ac/0x4330 [ 76.188416][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 76.188434][ T1154] ? khugepaged+0x2506/0x3fc0 [ 76.215148][ T1154] ? xas_find+0x31a/0x880 [ 76.219468][ T1154] ? check_preemption_disabled+0x38/0x220 [ 76.225171][ T1154] khugepaged+0x3041/0x3fc0 [ 76.229673][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 76.235285][ T1154] ? lock_downgrade+0x840/0x840 [ 76.240116][ T1154] ? finish_wait+0x260/0x260 [ 76.244706][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 76.250508][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 76.256474][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 76.261491][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 76.267104][ T1154] kthread+0x3b5/0x4a0 [ 76.271327][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 76.277025][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 76.282739][ T1154] ret_from_fork+0x1f/0x30 [ 76.287188][ T6822] CPU: 0 PID: 6822 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 76.295434][ T6822] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.306063][ T6822] Call Trace: [ 76.309360][ T6822] dump_stack+0x18f/0x20d [ 76.313693][ T6822] check_preemption_disabled+0x20d/0x220 [ 76.319324][ T6822] ext4_mb_new_blocks+0xa4d/0x3b70 [ 76.325413][ T6822] ? ext4_ext_search_right+0x2ca/0xb20 [ 76.330881][ T6822] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 76.336635][ T6822] ext4_ext_map_blocks+0x201b/0x33e0 [ 76.341941][ T6822] ? ext4_ext_release+0x10/0x10 [ 76.347267][ T6822] ? down_write_killable+0x170/0x170 [ 76.352807][ T6822] ? ext4_es_lookup_extent+0x41d/0xd10 [ 76.358276][ T6822] ext4_map_blocks+0x4cb/0x1640 [ 76.362600][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 76.363141][ T6822] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 76.372383][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 76.377331][ T6822] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 76.377347][ T6822] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 76.377365][ T6822] ? prandom_u32_state+0xe/0x170 [ 76.377381][ T6822] ? __brelse+0x84/0xa0 [ 76.377395][ T6822] ? __ext4_new_inode+0x144/0x55e0 [ 76.377413][ T6822] ext4_getblk+0xad/0x520 [ 76.377431][ T6822] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 76.377450][ T6822] ? ext4_free_inode+0x1700/0x1700 [ 76.424075][ T6822] ext4_bread+0x7c/0x380 [ 76.428303][ T6822] ? ext4_getblk+0x520/0x520 [ 76.432875][ T6822] ? dquot_get_next_dqblk+0x180/0x180 [ 76.438229][ T6822] ? security_transition_sid+0x123/0x190 [ 76.443851][ T6822] ? security_transition_sid+0xed/0x190 [ 76.449382][ T6822] ext4_append+0x153/0x360 [ 76.453803][ T6822] ext4_mkdir+0x5e0/0xdf0 [ 76.458122][ T6822] ? ext4_rmdir+0xde0/0xde0 [ 76.462614][ T6822] vfs_mkdir+0x419/0x690 [ 76.466865][ T6822] do_mkdirat+0x21e/0x280 [ 76.471180][ T6822] ? __ia32_sys_mknod+0xb0/0xb0 [ 76.476015][ T6822] ? do_syscall_64+0x1c/0xe0 [ 76.480593][ T6822] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 76.486559][ T6822] do_syscall_64+0x60/0xe0 [ 76.490962][ T6822] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 76.496839][ T6822] RIP: 0033:0x45bee7 [ 76.500734][ T6822] Code: Bad RIP value. [ 76.504779][ T6822] RSP: 002b:00007ffe11e8cfe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 76.513170][ T6822] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 76.521151][ T6822] RDX: 00007ffe11e8d033 RSI: 00000000000001ff RDI: 00007ffe11e8d030 [ 76.529115][ T6822] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 76.537091][ T6822] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 76.545063][ T6822] R13: 00007ffe11e8d020 R14: 0000000000000000 R15: 00007ffe11e8d030 [ 76.553042][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 76.560943][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.571092][ T1154] Call Trace: [ 76.574391][ T1154] dump_stack+0x18f/0x20d [ 76.578741][ T1154] check_preemption_disabled+0x20d/0x220 [ 76.584409][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 76.589554][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 76.595033][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 76.601199][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 76.606855][ T1154] ? ext4_ext_release+0x10/0x10 [ 76.611739][ T1154] ? down_write_killable+0x170/0x170 [ 76.617048][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 76.622701][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 76.627585][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 76.632806][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 76.638370][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 76.644369][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 76.649842][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 76.654828][ T1154] ? lock_release+0x7c0/0x800 [ 76.659545][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 76.665313][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 76.670958][ T1154] ? do_writepages+0xfa/0x2a0 [ 76.675649][ T1154] do_writepages+0xfa/0x2a0 [ 76.680176][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 76.685914][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 76.690963][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 76.696171][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 76.696913][ T6822] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6822 [ 76.701032][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 76.710423][ T6822] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 76.716071][ T1154] ? collapse_file+0x35a2/0x4330 [ 76.716085][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 76.716109][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 76.716125][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 76.716144][ T1154] collapse_file+0x35ac/0x4330 [ 76.716174][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 76.756708][ T1154] ? khugepaged+0x2506/0x3fc0 [ 76.761408][ T1154] ? xas_find+0x31a/0x880 [ 76.765749][ T1154] ? check_preemption_disabled+0x38/0x220 [ 76.771464][ T1154] khugepaged+0x3041/0x3fc0 [ 76.775976][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 76.781614][ T1154] ? lock_downgrade+0x840/0x840 [ 76.786448][ T1154] ? finish_wait+0x260/0x260 [ 76.791030][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 76.796928][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 76.802901][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 76.808629][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 76.815111][ T1154] kthread+0x3b5/0x4a0 [ 76.819162][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 76.824885][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 76.830594][ T1154] ret_from_fork+0x1f/0x30 [ 76.835009][ T6822] CPU: 0 PID: 6822 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 76.843262][ T6822] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.853322][ T6822] Call Trace: [ 76.856622][ T6822] dump_stack+0x18f/0x20d [ 76.860967][ T6822] check_preemption_disabled+0x20d/0x220 [ 76.866602][ T6822] ext4_mb_new_blocks+0xa4d/0x3b70 [ 76.871726][ T6822] ? ext4_ext_search_right+0x2ca/0xb20 [ 76.877180][ T6822] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 76.880732][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 76.882906][ T6822] ext4_ext_map_blocks+0x201b/0x33e0 [ 76.882930][ T6822] ? ext4_ext_release+0x10/0x10 [ 76.882958][ T6822] ? down_write_killable+0x170/0x170 [ 76.882970][ T6822] ? ext4_es_lookup_extent+0x41d/0xd10 [ 76.882991][ T6822] ext4_map_blocks+0x4cb/0x1640 [ 76.883011][ T6822] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 76.883026][ T6822] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 76.883042][ T6822] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 76.883056][ T6822] ? prandom_u32_state+0xe/0x170 [ 76.883073][ T6822] ? __brelse+0x84/0xa0 [ 76.883088][ T6822] ? __ext4_new_inode+0x144/0x55e0 [ 76.883104][ T6822] ext4_getblk+0xad/0x520 [ 76.883123][ T6822] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 76.893058][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 76.897570][ T6822] ? ext4_free_inode+0x1700/0x1700 [ 76.897587][ T6822] ext4_bread+0x7c/0x380 [ 76.897600][ T6822] ? ext4_getblk+0x520/0x520 [ 76.897614][ T6822] ? dquot_get_next_dqblk+0x180/0x180 [ 76.897630][ T6822] ? security_transition_sid+0x123/0x190 [ 76.897643][ T6822] ? security_transition_sid+0xed/0x190 [ 76.897661][ T6822] ext4_append+0x153/0x360 [ 76.897679][ T6822] ext4_mkdir+0x5e0/0xdf0 [ 76.897699][ T6822] ? ext4_rmdir+0xde0/0xde0 [ 76.897726][ T6822] vfs_mkdir+0x419/0x690 [ 76.897744][ T6822] do_mkdirat+0x21e/0x280 [ 77.017103][ T6822] ? __ia32_sys_mknod+0xb0/0xb0 [ 77.021938][ T6822] ? do_syscall_64+0x1c/0xe0 [ 77.026687][ T6822] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 77.032651][ T6822] do_syscall_64+0x60/0xe0 [ 77.037054][ T6822] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 77.042928][ T6822] RIP: 0033:0x45bee7 [ 77.046800][ T6822] Code: Bad RIP value. [ 77.050861][ T6822] RSP: 002b:00007ffe11e8cfe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 77.059252][ T6822] RAX: ffffffffffffffda RBX: 0000000000012b87 RCX: 000000000045bee7 [ 77.067206][ T6822] RDX: 00007ffe11e8d033 RSI: 00000000000001ff RDI: 00007ffe11e8d030 [ 77.075157][ T6822] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 77.083129][ T6822] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 77.091081][ T6822] R13: 00007ffe11e8d020 R14: 0000000000012b28 R15: 00007ffe11e8d030 2020/06/13 21:02:25 building call list... [ 77.099059][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 77.106957][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.117009][ T1154] Call Trace: [ 77.120391][ T1154] dump_stack+0x18f/0x20d [ 77.124756][ T1154] check_preemption_disabled+0x20d/0x220 [ 77.130397][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 77.135520][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 77.140997][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 77.147604][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 77.152997][ T1154] ? ext4_ext_release+0x10/0x10 [ 77.158117][ T1154] ? down_write_killable+0x170/0x170 [ 77.163497][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 77.173399][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 77.178349][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 77.183559][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 77.189144][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 77.195149][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 77.200713][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 77.205837][ T1154] ? lock_release+0x7c0/0x800 [ 77.210557][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 77.216224][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 77.223569][ T1154] ? do_writepages+0xfa/0x2a0 [ 77.228266][ T1154] do_writepages+0xfa/0x2a0 [ 77.232782][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 77.238426][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 77.243482][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 77.248679][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 77.253532][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 77.259249][ T1154] ? collapse_file+0x35a2/0x4330 [ 77.264201][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 77.270279][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 77.275501][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 77.281483][ T1154] collapse_file+0x35ac/0x4330 [ 77.286257][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 77.291638][ T1154] ? khugepaged+0x2506/0x3fc0 [ 77.296324][ T1154] ? xas_find+0x31a/0x880 [ 77.300658][ T1154] ? check_preemption_disabled+0x38/0x220 [ 77.306385][ T1154] khugepaged+0x3041/0x3fc0 [ 77.311050][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 77.316683][ T1154] ? lock_downgrade+0x840/0x840 [ 77.322130][ T1154] ? finish_wait+0x260/0x260 [ 77.326753][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 77.332560][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 77.338976][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 77.344018][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 77.349645][ T1154] kthread+0x3b5/0x4a0 [ 77.353708][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 77.362640][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 77.369396][ T1154] ret_from_fork+0x1f/0x30 [ 77.606085][ T7] tipc: TX() has been purged, node left! executing program [ 79.001877][ T6818] can: request_module (can-proto-0) failed. [ 79.573954][ T6818] can: request_module (can-proto-0) failed. [ 79.585488][ T6818] can: request_module (can-proto-0) failed. [ 79.630948][ T29] audit: type=1400 audit(1592082147.920:9): avc: denied { create } for pid=6804 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1