[ 49.744106][ T6767] Code: Bad RIP value. [ 49.748175][ T6767] RSP: 002b:00007ffc8d4ade58 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 49.756592][ T6767] RAX: ffffffffffffffda RBX: 0000556be7537985 RCX: 00007fb60f4a1687 [ 49.764562][ T6767] RDX: 00007ffc8d4add20 RSI: 00000000000001ed RDI: 0000556be7537985 [ 49.772541][ T6767] RBP: 00007fb60f4a1680 R08: 0000000000000100 R09: 0000000000000000 [ 49.780516][ T6767] R10: 0000556be7537980 R11: 0000000000000246 R12: 00000000000001ed [ 49.788493][ T6767] R13: 00007ffc8d4adfe0 R14: 0000000000000000 R15: 0000000000000000 [ 51.910260][ T4783] systemd-udevd (4783) used greatest stack depth: 22272 bytes left [ 51.918223][ T4776] systemd-udevd (4776) used greatest stack depth: 21984 bytes left [ 51.940619][ T4855] systemd-udevd (4855) used greatest stack depth: 21848 bytes left Warning: Permanently added '10.128.1.62' (ECDSA) to the list of known hosts. 2020/06/07 10:17:31 fuzzer started 2020/06/07 10:17:31 connecting to host at 10.128.0.26:42629 2020/06/07 10:17:31 checking machine... 2020/06/07 10:17:31 checking revisions... 2020/06/07 10:17:31 testing simple program... [ 58.280837][ T6790] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6790 [ 58.289945][ T6790] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.295909][ T6790] CPU: 0 PID: 6790 Comm: syz-fuzzer Not tainted 5.7.0-next-20200605-syzkaller #0 [ 58.305004][ T6790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.315056][ T6790] Call Trace: [ 58.318327][ T6790] dump_stack+0x18f/0x20d [ 58.322636][ T6790] check_preemption_disabled+0x20d/0x220 [ 58.328261][ T6790] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.333354][ T6790] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.338796][ T6790] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.344514][ T6790] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.349792][ T6790] ? ext4_ext_release+0x10/0x10 [ 58.354722][ T6790] ? down_write_killable+0x170/0x170 [ 58.359980][ T6790] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.365415][ T6790] ext4_map_blocks+0x4cb/0x1640 [ 58.370256][ T6790] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.375428][ T6790] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.380947][ T6790] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.386903][ T6790] ? prandom_u32_state+0xe/0x170 [ 58.391818][ T6790] ? __brelse+0x84/0xa0 [ 58.395966][ T6790] ? __ext4_new_inode+0x144/0x55e0 [ 58.401050][ T6790] ext4_getblk+0xad/0x520 [ 58.405355][ T6790] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.411050][ T6790] ? ext4_free_inode+0x1700/0x1700 [ 58.416139][ T6790] ext4_bread+0x7c/0x380 [ 58.420403][ T6790] ? ext4_getblk+0x520/0x520 [ 58.425085][ T6790] ? dquot_get_next_dqblk+0x180/0x180 [ 58.430446][ T6790] ext4_append+0x153/0x360 [ 58.434861][ T6790] ext4_mkdir+0x5e0/0xdf0 [ 58.439176][ T6790] ? ext4_rmdir+0xde0/0xde0 [ 58.443662][ T6790] ? security_inode_permission+0xc4/0xf0 [ 58.449292][ T6790] vfs_mkdir+0x419/0x690 [ 58.453514][ T6790] do_mkdirat+0x21e/0x280 [ 58.457823][ T6790] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.462668][ T6790] ? do_syscall_64+0x1c/0xe0 [ 58.467249][ T6790] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.473222][ T6790] do_syscall_64+0x60/0xe0 [ 58.477621][ T6790] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.483487][ T6790] RIP: 0033:0x4b02a0 [ 58.488060][ T6790] Code: Bad RIP value. [ 58.492100][ T6790] RSP: 002b:000000c0001214b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 58.500592][ T6790] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 58.508611][ T6790] RDX: 00000000000001c0 RSI: 000000c0000e4700 RDI: ffffffffffffff9c [ 58.516585][ T6790] RBP: 000000c000121510 R08: 0000000000000000 R09: 0000000000000000 [ 58.524665][ T6790] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 58.532617][ T6790] R13: 0000000000000039 R14: 0000000000000038 R15: 0000000000000100 [ 58.557238][ T6800] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6800 [ 58.566659][ T6800] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.572547][ T6800] CPU: 0 PID: 6800 Comm: syz-executor.0 Not tainted 5.7.0-next-20200605-syzkaller #0 [ 58.581970][ T6800] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.592000][ T6800] Call Trace: [ 58.595286][ T6800] dump_stack+0x18f/0x20d [ 58.599595][ T6800] check_preemption_disabled+0x20d/0x220 [ 58.605208][ T6800] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.610301][ T6800] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.616890][ T6800] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.622601][ T6800] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.627879][ T6800] ? ext4_ext_release+0x10/0x10 [ 58.632725][ T6800] ? down_write_killable+0x170/0x170 [ 58.637995][ T6800] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.643445][ T6800] ext4_map_blocks+0x4cb/0x1640 [ 58.648279][ T6800] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.653469][ T6800] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.658994][ T6800] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.664952][ T6800] ? prandom_u32_state+0xe/0x170 [ 58.669876][ T6800] ? __brelse+0x84/0xa0 [ 58.674104][ T6800] ? __ext4_new_inode+0x144/0x55e0 [ 58.679199][ T6800] ext4_getblk+0xad/0x520 [ 58.683506][ T6800] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.689465][ T6800] ? ext4_free_inode+0x1700/0x1700 [ 58.694554][ T6800] ext4_bread+0x7c/0x380 [ 58.698771][ T6800] ? ext4_getblk+0x520/0x520 [ 58.703336][ T6800] ? dquot_get_next_dqblk+0x180/0x180 [ 58.708688][ T6800] ext4_append+0x153/0x360 [ 58.713083][ T6800] ext4_mkdir+0x5e0/0xdf0 [ 58.717424][ T6800] ? ext4_rmdir+0xde0/0xde0 [ 58.721914][ T6800] ? security_inode_permission+0xc4/0xf0 [ 58.727552][ T6800] vfs_mkdir+0x419/0x690 [ 58.731792][ T6800] do_mkdirat+0x21e/0x280 [ 58.736103][ T6800] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.740933][ T6800] ? do_syscall_64+0x1c/0xe0 [ 58.745504][ T6800] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.751460][ T6800] do_syscall_64+0x60/0xe0 [ 58.755856][ T6800] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.761769][ T6800] RIP: 0033:0x45bee7 [ 58.765662][ T6800] Code: Bad RIP value. [ 58.769744][ T6800] RSP: 002b:00007ffd1996e438 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 58.778130][ T6800] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 58.786080][ T6800] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffd1996e610 [ 58.794034][ T6800] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003780 [ 58.801987][ T6800] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 58.809935][ T6800] R13: 00007ffd1996e610 R14: 8421084210842109 R15: 00007ffd1996e61c [ 58.892540][ T6801] IPVS: ftp: loaded support on port[0] = 21 [ 58.904624][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 58.913828][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.919758][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-next-20200605-syzkaller #0 [ 58.928860][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.938182][ T6801] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6801 [ 58.938916][ T1154] Call Trace: [ 58.948326][ T6801] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.951535][ T1154] dump_stack+0x18f/0x20d [ 58.961706][ T1154] check_preemption_disabled+0x20d/0x220 [ 58.967323][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.972416][ T1154] ? ext4_find_extent+0x81a/0xad0 [ 58.977430][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.982873][ T1154] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.988577][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.993854][ T1154] ? ext4_ext_release+0x10/0x10 [ 58.998708][ T1154] ? down_write_killable+0x170/0x170 [ 59.003975][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.009429][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 59.014266][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.019461][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.024990][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.030971][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.036429][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 59.041365][ T1154] ? lock_release+0x710/0x800 [ 59.046035][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.051672][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.057298][ T1154] ? do_writepages+0xfa/0x2a0 [ 59.061980][ T1154] do_writepages+0xfa/0x2a0 [ 59.066470][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 59.072091][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 59.077098][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 59.082279][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 59.087113][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 59.092812][ T1154] ? collapse_file+0x35a2/0x4330 [ 59.097905][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 59.103960][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 59.109138][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.115104][ T1154] collapse_file+0x35ac/0x4330 [ 59.119864][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 59.125218][ T1154] ? khugepaged+0x2506/0x3fc0 [ 59.129901][ T1154] ? xas_find+0x31a/0x880 [ 59.134213][ T1154] ? check_preemption_disabled+0x38/0x220 [ 59.139928][ T1154] khugepaged+0x3041/0x3fc0 [ 59.144434][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.150047][ T1154] ? lock_downgrade+0x840/0x840 [ 59.154887][ T1154] ? finish_wait+0x260/0x260 [ 59.159472][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.165267][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.171233][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 59.176239][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.181856][ T1154] kthread+0x3b5/0x4a0 [ 59.185918][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.191624][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.197333][ T1154] ret_from_fork+0x1f/0x30 [ 59.201759][ T6801] CPU: 1 PID: 6801 Comm: syz-executor.0 Not tainted 5.7.0-next-20200605-syzkaller #0 [ 59.211219][ T6801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.221304][ T6801] Call Trace: [ 59.224609][ T6801] dump_stack+0x18f/0x20d [ 59.228947][ T6801] check_preemption_disabled+0x20d/0x220 [ 59.234587][ T6801] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.239707][ T6801] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.245167][ T6801] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.250895][ T6801] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.256187][ T6801] ? ext4_ext_release+0x10/0x10 [ 59.261093][ T6801] ? down_write_killable+0x170/0x170 [ 59.266359][ T6801] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.271880][ T6801] ext4_map_blocks+0x4cb/0x1640 [ 59.276739][ T6801] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.282391][ T6801] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.288363][ T6801] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.294375][ T6801] ? prandom_u32_state+0xe/0x170 [ 59.299316][ T6801] ? __brelse+0x84/0xa0 [ 59.303511][ T6801] ? __ext4_new_inode+0x144/0x55e0 [ 59.308675][ T6801] ext4_getblk+0xad/0x520 [ 59.313018][ T6801] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.318756][ T6801] ? ext4_free_inode+0x1700/0x1700 [ 59.323850][ T6801] ext4_bread+0x7c/0x380 [ 59.328079][ T6801] ? ext4_getblk+0x520/0x520 [ 59.332645][ T6801] ? dquot_get_next_dqblk+0x180/0x180 [ 59.338003][ T6801] ext4_append+0x153/0x360 [ 59.342412][ T6801] ext4_mkdir+0x5e0/0xdf0 [ 59.346726][ T6801] ? ext4_rmdir+0xde0/0xde0 [ 59.351227][ T6801] ? security_inode_permission+0xc4/0xf0 [ 59.356846][ T6801] vfs_mkdir+0x419/0x690 [ 59.361068][ T6801] do_mkdirat+0x21e/0x280 [ 59.365378][ T6801] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.370206][ T6801] ? do_syscall_64+0x1c/0xe0 [ 59.374777][ T6801] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.380762][ T6801] do_syscall_64+0x60/0xe0 [ 59.385156][ T6801] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.391039][ T6801] RIP: 0033:0x45bee7 [ 59.394909][ T6801] Code: Bad RIP value. [ 59.398963][ T6801] RSP: 002b:00007ffd1996e328 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 59.407358][ T6801] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 59.415309][ T6801] RDX: 00007ffd1996e373 RSI: 00000000000001ff RDI: 00007ffd1996e370 [ 59.423262][ T6801] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 59.431221][ T6801] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 59.439179][ T6801] R13: 00007ffd1996e360 R14: 0000000000000000 R15: 00007ffd1996e370 [ 59.480653][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 59.489917][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.495890][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-next-20200605-syzkaller #0 [ 59.504998][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.515052][ T1154] Call Trace: [ 59.518348][ T1154] dump_stack+0x18f/0x20d [ 59.522713][ T1154] check_preemption_disabled+0x20d/0x220 [ 59.528350][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.533473][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.538936][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 59.545092][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.550478][ T1154] ? ext4_ext_release+0x10/0x10 [ 59.555349][ T1154] ? down_write_killable+0x170/0x170 [ 59.560634][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.566090][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 59.570979][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.576157][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.581679][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.585818][ T6801] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6801 [ 59.587666][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.597070][ T6801] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.602444][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 59.613243][ T1154] ? lock_release+0x710/0x800 [ 59.617913][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.623546][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.629161][ T1154] ? do_writepages+0xfa/0x2a0 [ 59.633820][ T1154] do_writepages+0xfa/0x2a0 [ 59.638310][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 59.643939][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 59.648943][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 59.654211][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 59.659048][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 59.664753][ T1154] ? collapse_file+0x35a2/0x4330 [ 59.669670][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 59.675812][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 59.681014][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.687071][ T1154] collapse_file+0x35ac/0x4330 [ 59.691831][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 59.697185][ T1154] ? khugepaged+0x2506/0x3fc0 [ 59.701854][ T1154] ? xas_find+0x31a/0x880 [ 59.706168][ T1154] ? check_preemption_disabled+0x38/0x220 [ 59.711873][ T1154] khugepaged+0x3041/0x3fc0 [ 59.716377][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.722006][ T1154] ? lock_downgrade+0x840/0x840 [ 59.726837][ T1154] ? finish_wait+0x260/0x260 [ 59.731421][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.737329][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.743304][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 59.748331][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.753961][ T1154] kthread+0x3b5/0x4a0 [ 59.758027][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.763745][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.769482][ T1154] ret_from_fork+0x1f/0x30 [ 59.773906][ T6801] CPU: 1 PID: 6801 Comm: syz-executor.0 Not tainted 5.7.0-next-20200605-syzkaller #0 [ 59.783363][ T6801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.793503][ T6801] Call Trace: [ 59.796802][ T6801] dump_stack+0x18f/0x20d [ 59.801144][ T6801] check_preemption_disabled+0x20d/0x220 [ 59.806781][ T6801] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.811897][ T6801] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.817383][ T6801] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.823117][ T6801] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.828407][ T6801] ? ext4_ext_release+0x10/0x10 [ 59.833273][ T6801] ? down_write_killable+0x170/0x170 [ 59.838555][ T6801] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.844192][ T6801] ext4_map_blocks+0x4cb/0x1640 [ 59.849327][ T6801] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.854504][ T6801] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.860025][ T6801] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.865979][ T6801] ? prandom_u32_state+0xe/0x170 [ 59.870890][ T6801] ? __brelse+0x84/0xa0 [ 59.875034][ T6801] ? __ext4_new_inode+0x144/0x55e0 [ 59.880119][ T6801] ext4_getblk+0xad/0x520 [ 59.884535][ T6801] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.890231][ T6801] ? ext4_free_inode+0x1700/0x1700 [ 59.895316][ T6801] ext4_bread+0x7c/0x380 [ 59.899545][ T6801] ? ext4_getblk+0x520/0x520 [ 59.904110][ T6801] ? dquot_get_next_dqblk+0x180/0x180 [ 59.909475][ T6801] ext4_append+0x153/0x360 [ 59.913870][ T6801] ext4_mkdir+0x5e0/0xdf0 [ 59.918181][ T6801] ? ext4_rmdir+0xde0/0xde0 [ 59.922681][ T6801] ? security_inode_permission+0xc4/0xf0 [ 59.928301][ T6801] vfs_mkdir+0x419/0x690 [ 59.932537][ T6801] do_mkdirat+0x21e/0x280 [ 59.936861][ T6801] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.941713][ T6801] ? do_syscall_64+0x1c/0xe0 [ 59.946372][ T6801] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.952360][ T6801] do_syscall_64+0x60/0xe0 [ 59.956769][ T6801] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.962640][ T6801] RIP: 0033:0x45bee7 [ 59.966506][ T6801] Code: Bad RIP value. [ 59.970547][ T6801] RSP: 002b:00007ffd1996e328 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 59.978940][ T6801] RAX: ffffffffffffffda RBX: 000000000000e8c6 RCX: 000000000045bee7 [ 59.986899][ T6801] RDX: 00007ffd1996e373 RSI: 00000000000001ff RDI: 00007ffd1996e370 [ 59.994859][ T6801] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 60.002819][ T6801] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 60.010767][ T6801] R13: 00007ffd1996e360 R14: 000000000000e852 R15: 00007ffd1996e370 [ 60.036038][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 60.045321][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.051353][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-next-20200605-syzkaller #0 [ 60.060655][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.070695][ T1154] Call Trace: [ 60.073976][ T1154] dump_stack+0x18f/0x20d [ 60.078333][ T1154] check_preemption_disabled+0x20d/0x220 [ 60.083945][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.089053][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.094518][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 60.100648][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.105915][ T1154] ? ext4_ext_release+0x10/0x10 [ 60.110767][ T1154] ? down_write_killable+0x170/0x170 [ 60.116038][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.121476][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 60.126306][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.131485][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.137025][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.143005][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.148560][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 60.153587][ T1154] ? lock_release+0x710/0x800 [ 60.158276][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.163939][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.169574][ T1154] ? do_writepages+0xfa/0x2a0 [ 60.174283][ T1154] do_writepages+0xfa/0x2a0 [ 60.178797][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 60.184432][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 60.189463][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 60.194670][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 60.199566][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.205287][ T1154] ? collapse_file+0x35a2/0x4330 [ 60.210231][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 60.216314][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 60.221517][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.227508][ T1154] collapse_file+0x35ac/0x4330 [ 60.232296][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 60.237668][ T1154] ? khugepaged+0x2506/0x3fc0 [ 60.242365][ T1154] ? xas_find+0x31a/0x880 [ 60.246693][ T1154] ? check_preemption_disabled+0x38/0x220 [ 60.252441][ T1154] khugepaged+0x3041/0x3fc0 [ 60.256967][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.262594][ T1154] ? lock_downgrade+0x840/0x840 [ 60.267513][ T1154] ? finish_wait+0x260/0x260 [ 60.272099][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.277902][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 2020/06/07 10:17:33 building call list... [ 60.283886][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 60.288913][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.294559][ T1154] kthread+0x3b5/0x4a0 [ 60.298632][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.304353][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.310072][ T1154] ret_from_fork+0x1f/0x30 [ 60.533896][ T309] tipc: TX() has been purged, node left! executing program [ 61.953663][ T6782] can: request_module (can-proto-0) failed. [ 62.509455][ T6782] can: request_module (can-proto-0) failed. [ 62.520829][ T6782] can: request_module (can-proto-0) failed.