[ 51.192846][ T6726] R10: 0000556cdfe75980 R11: 0000000000000246 R12: 00000000000001ed [ 51.201017][ T6726] R13: 00007ffc88ffe600 R14: 0000000000000000 R15: 0000000000000000 [ 51.632720][ T6719] scp (6719) used greatest stack depth: 21600 bytes left [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 57.095462][ T205] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/205 [ 57.105293][ T205] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 57.111486][ T205] CPU: 0 PID: 205 Comm: kworker/u4:5 Not tainted 5.7.0-next-20200609-syzkaller #0 [ 57.120789][ T205] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.130969][ T205] Workqueue: writeback wb_workfn (flush-8:0) [ 57.136969][ T205] Call Trace: [ 57.140256][ T205] dump_stack+0x18f/0x20d [ 57.144818][ T205] check_preemption_disabled+0x20d/0x220 [ 57.150449][ T205] ext4_mb_new_blocks+0xa4d/0x3b70 [ 57.155557][ T205] ? ext4_find_extent+0x81a/0xad0 [ 57.160630][ T205] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.166165][ T205] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.172068][ T205] ext4_ext_map_blocks+0x201b/0x33e0 [ 57.177572][ T205] ? ext4_ext_release+0x10/0x10 [ 57.182519][ T205] ? down_write_killable+0x170/0x170 [ 57.188082][ T205] ? ext4_es_lookup_extent+0x41d/0xd10 [ 57.193816][ T205] ext4_map_blocks+0x4cb/0x1640 [ 57.199054][ T205] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.204247][ T205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.209848][ T205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.216079][ T205] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 57.221662][ T205] ext4_writepages+0x1a83/0x33c0 [ 57.226609][ T205] ? __ext4_mark_inode_dirty+0x940/0x940 [ 57.232231][ T205] ? __lock_acquire+0x2224/0x48b0 [ 57.237470][ T205] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.243453][ T205] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.249727][ T205] ? __ext4_mark_inode_dirty+0x940/0x940 [ 57.255492][ T205] ? do_writepages+0xf3/0x2a0 [ 57.260160][ T205] do_writepages+0xf3/0x2a0 [ 57.264683][ T205] ? page_writeback_cpu_online+0x10/0x10 [ 57.270629][ T205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.276299][ T205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.282658][ T205] ? lock_downgrade+0x840/0x840 [ 57.287529][ T205] __writeback_single_inode+0x12a/0x13d0 [ 57.293290][ T205] ? _raw_spin_unlock+0x24/0x40 [ 57.298264][ T205] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 57.304287][ T205] writeback_sb_inodes+0x515/0xdc0 [ 57.309415][ T205] ? __writeback_single_inode+0x13d0/0x13d0 [ 57.315307][ T205] __writeback_inodes_wb+0xc3/0x250 [ 57.320516][ T205] wb_writeback+0x8c8/0xd40 [ 57.325011][ T205] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 57.331322][ T205] ? cpumask_next+0x3c/0x40 [ 57.335813][ T205] ? get_nr_dirty_inodes+0xd6/0x130 [ 57.340996][ T205] wb_workfn+0xab3/0x1090 [ 57.345324][ T205] ? inode_wait_for_writeback+0x30/0x30 [ 57.350859][ T205] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.356398][ T205] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.362381][ T205] process_one_work+0x965/0x1690 [ 57.367300][ T205] ? lock_release+0x800/0x800 [ 57.371981][ T205] ? pwq_dec_nr_in_flight+0x310/0x310 [ 57.377336][ T205] ? rwlock_bug.part.0+0x90/0x90 [ 57.382265][ T205] worker_thread+0x96/0xe10 [ 57.386770][ T205] ? process_one_work+0x1690/0x1690 [ 57.391958][ T205] kthread+0x3b5/0x4a0 [ 57.396007][ T205] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.401712][ T205] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.407411][ T205] ret_from_fork+0x1f/0x30 Warning: Permanently added '10.128.1.0' (ECDSA) to the list of known hosts. 2020/06/10 07:01:05 fuzzer started 2020/06/10 07:01:05 connecting to host at 10.128.0.26:33145 2020/06/10 07:01:05 checking machine... 2020/06/10 07:01:05 checking revisions... 2020/06/10 07:01:05 testing simple program... [ 59.626517][ T6790] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6790 [ 59.635717][ T6790] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.641695][ T6790] CPU: 1 PID: 6790 Comm: syz-fuzzer Not tainted 5.7.0-next-20200609-syzkaller #0 [ 59.650805][ T6790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.660937][ T6790] Call Trace: [ 59.664215][ T6790] dump_stack+0x18f/0x20d [ 59.668549][ T6790] check_preemption_disabled+0x20d/0x220 [ 59.674164][ T6790] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.679272][ T6790] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.684727][ T6790] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.690440][ T6790] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.695706][ T6790] ? ext4_ext_release+0x10/0x10 [ 59.700545][ T6790] ? down_write_killable+0x170/0x170 [ 59.705810][ T6790] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.711255][ T6790] ext4_map_blocks+0x4cb/0x1640 [ 59.716092][ T6790] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.721366][ T6790] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.726897][ T6790] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.733474][ T6790] ? prandom_u32_state+0xe/0x170 [ 59.738401][ T6790] ? __brelse+0x84/0xa0 [ 59.742542][ T6790] ? __ext4_new_inode+0x144/0x55e0 [ 59.747650][ T6790] ext4_getblk+0xad/0x520 [ 59.751957][ T6790] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.758043][ T6790] ? ext4_free_inode+0x1700/0x1700 [ 59.766530][ T6790] ext4_bread+0x7c/0x380 [ 59.770753][ T6790] ? ext4_getblk+0x520/0x520 [ 59.775345][ T6790] ? dquot_get_next_dqblk+0x180/0x180 [ 59.780713][ T6790] ext4_append+0x153/0x360 [ 59.785128][ T6790] ext4_mkdir+0x5e0/0xdf0 [ 59.789437][ T6790] ? ext4_rmdir+0xde0/0xde0 [ 59.794354][ T6790] ? security_inode_permission+0xc4/0xf0 [ 59.799966][ T6790] vfs_mkdir+0x419/0x690 [ 59.804189][ T6790] do_mkdirat+0x21e/0x280 [ 59.808515][ T6790] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.814052][ T6790] ? do_syscall_64+0x1c/0xe0 [ 59.818727][ T6790] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.824712][ T6790] do_syscall_64+0x60/0xe0 [ 59.829125][ T6790] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.835001][ T6790] RIP: 0033:0x4b02a0 [ 59.838877][ T6790] Code: Bad RIP value. [ 59.842932][ T6790] RSP: 002b:000000c0000cf4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 59.851337][ T6790] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 59.859720][ T6790] RDX: 00000000000001c0 RSI: 000000c0000d6220 RDI: ffffffffffffff9c [ 59.868369][ T6790] RBP: 000000c0000cf510 R08: 0000000000000000 R09: 0000000000000000 [ 59.876328][ T6790] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 59.884305][ T6790] R13: 0000000000000012 R14: 0000000000000011 R15: 0000000000000100 [ 59.906549][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 59.913341][ T6805] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6805 [ 59.915810][ T1157] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.925228][ T6805] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.925244][ T6805] CPU: 1 PID: 6805 Comm: syz-executor.0 Not tainted 5.7.0-next-20200609-syzkaller #0 [ 59.925251][ T6805] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.925261][ T6805] Call Trace: [ 59.959947][ T6805] dump_stack+0x18f/0x20d [ 59.964301][ T6805] check_preemption_disabled+0x20d/0x220 [ 59.969946][ T6805] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.975144][ T6805] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.980676][ T6805] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.986397][ T6805] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.991671][ T6805] ? ext4_ext_release+0x10/0x10 [ 59.996518][ T6805] ? down_write_killable+0x170/0x170 [ 60.002056][ T6805] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.007514][ T6805] ext4_map_blocks+0x4cb/0x1640 [ 60.012363][ T6805] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.017564][ T6805] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.025387][ T6805] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.031361][ T6805] ? prandom_u32_state+0xe/0x170 [ 60.036461][ T6805] ? __brelse+0x84/0xa0 [ 60.040603][ T6805] ? __ext4_new_inode+0x144/0x55e0 [ 60.045716][ T6805] ext4_getblk+0xad/0x520 [ 60.050291][ T6805] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.056038][ T6805] ? ext4_free_inode+0x1700/0x1700 [ 60.061418][ T6805] ext4_bread+0x7c/0x380 [ 60.065647][ T6805] ? ext4_getblk+0x520/0x520 [ 60.070254][ T6805] ? dquot_get_next_dqblk+0x180/0x180 [ 60.075788][ T6805] ext4_append+0x153/0x360 [ 60.080203][ T6805] ext4_mkdir+0x5e0/0xdf0 [ 60.084526][ T6805] ? ext4_rmdir+0xde0/0xde0 [ 60.089024][ T6805] ? security_inode_permission+0xc4/0xf0 [ 60.094646][ T6805] vfs_mkdir+0x419/0x690 [ 60.098884][ T6805] do_mkdirat+0x21e/0x280 [ 60.103203][ T6805] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.108301][ T6805] ? do_syscall_64+0x1c/0xe0 [ 60.112900][ T6805] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.118875][ T6805] do_syscall_64+0x60/0xe0 [ 60.123276][ T6805] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.132712][ T6805] RIP: 0033:0x45bee7 [ 60.136598][ T6805] Code: Bad RIP value. [ 60.140658][ T6805] RSP: 002b:00007ffe37ce41a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 60.149053][ T6805] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 60.157008][ T6805] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffe37ce4380 [ 60.165225][ T6805] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003680 [ 60.173210][ T6805] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 60.181168][ T6805] R13: 00007ffe37ce4380 R14: 8421084210842109 R15: 00007ffe37ce438c [ 60.189150][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-next-20200609-syzkaller #0 [ 60.198273][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.208803][ T1157] Call Trace: [ 60.212163][ T1157] dump_stack+0x18f/0x20d [ 60.216770][ T1157] check_preemption_disabled+0x20d/0x220 [ 60.222593][ T1157] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.227790][ T1157] ? ext4_find_extent+0x81a/0xad0 [ 60.232822][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.238266][ T1157] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.243987][ T1157] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.249257][ T1157] ? ext4_ext_release+0x10/0x10 [ 60.254112][ T1157] ? down_write_killable+0x170/0x170 [ 60.259406][ T1157] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.265007][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 60.269867][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.275057][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.280604][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.286692][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.292137][ T1157] ext4_writepages+0x1a83/0x33c0 [ 60.297069][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.302722][ T1157] ? __lock_acquire+0x2224/0x48b0 [ 60.307771][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.313387][ T1157] ? do_writepages+0xf3/0x2a0 [ 60.318082][ T1157] do_writepages+0xf3/0x2a0 [ 60.322666][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 60.328285][ T1157] ? do_raw_spin_lock+0x120/0x2d0 [ 60.333396][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 60.338576][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 60.343408][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.349225][ T1157] ? collapse_file+0x35a2/0x4330 [ 60.354160][ T1157] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 60.360329][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 60.365541][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.371543][ T1157] collapse_file+0x35ac/0x4330 [ 60.376350][ T1157] ? collapse_huge_page+0x4350/0x4350 [ 60.381733][ T1157] ? khugepaged+0x2506/0x3fc0 [ 60.386439][ T1157] khugepaged+0x3041/0x3fc0 [ 60.390971][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.396608][ T1157] ? lock_downgrade+0x840/0x840 [ 60.401471][ T1157] ? finish_wait+0x260/0x260 [ 60.406081][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.411932][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.418029][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 60.423064][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.428793][ T1157] kthread+0x3b5/0x4a0 [ 60.432864][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.438596][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.444328][ T1157] ret_from_fork+0x1f/0x30 [ 60.476646][ T6806] IPVS: ftp: loaded support on port[0] = 21 [ 60.511391][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 60.520711][ T1157] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.521427][ T6806] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6806 [ 60.526769][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-next-20200609-syzkaller #0 [ 60.536152][ T6806] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.545214][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.545220][ T1157] Call Trace: [ 60.545245][ T1157] dump_stack+0x18f/0x20d [ 60.545267][ T1157] check_preemption_disabled+0x20d/0x220 [ 60.545283][ T1157] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.545306][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.585207][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 60.591346][ T1157] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.596629][ T1157] ? ext4_ext_release+0x10/0x10 [ 60.602171][ T1157] ? down_write_killable+0x170/0x170 [ 60.607474][ T1157] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.613062][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 60.617948][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.623147][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.628847][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.634841][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.640725][ T1157] ext4_writepages+0x1a83/0x33c0 [ 60.645677][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.651295][ T1157] ? __lock_acquire+0x2224/0x48b0 [ 60.656325][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.661942][ T1157] ? do_writepages+0xf3/0x2a0 [ 60.666600][ T1157] do_writepages+0xf3/0x2a0 [ 60.671091][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 60.676708][ T1157] ? do_raw_spin_lock+0x120/0x2d0 [ 60.681730][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 60.686928][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 60.691824][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.697531][ T1157] ? collapse_file+0x35a2/0x4330 [ 60.702450][ T1157] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 60.708694][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 60.713874][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.719840][ T1157] collapse_file+0x35ac/0x4330 [ 60.724948][ T1157] ? collapse_huge_page+0x4350/0x4350 [ 60.730301][ T1157] ? khugepaged+0x2506/0x3fc0 [ 60.734973][ T1157] khugepaged+0x3041/0x3fc0 [ 60.739480][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.745191][ T1157] ? lock_downgrade+0x840/0x840 [ 60.750039][ T1157] ? finish_wait+0x260/0x260 [ 60.754614][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.760401][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.766369][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 60.771379][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.776998][ T1157] kthread+0x3b5/0x4a0 [ 60.781051][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.786749][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.792469][ T1157] ret_from_fork+0x1f/0x30 [ 60.796889][ T6806] CPU: 1 PID: 6806 Comm: syz-executor.0 Not tainted 5.7.0-next-20200609-syzkaller #0 [ 60.806360][ T6806] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.816424][ T6806] Call Trace: [ 60.819726][ T6806] dump_stack+0x18f/0x20d [ 60.824085][ T6806] check_preemption_disabled+0x20d/0x220 [ 60.829814][ T6806] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.835062][ T6806] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.840724][ T6806] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.846450][ T6806] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.851724][ T6806] ? ext4_ext_release+0x10/0x10 [ 60.856570][ T6806] ? down_write_killable+0x170/0x170 [ 60.862791][ T6806] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.868237][ T6806] ext4_map_blocks+0x4cb/0x1640 [ 60.873096][ T6806] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.878275][ T6806] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.883798][ T6806] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.889789][ T6806] ? prandom_u32_state+0xe/0x170 [ 60.894738][ T6806] ? __brelse+0x84/0xa0 [ 60.899003][ T6806] ? __ext4_new_inode+0x144/0x55e0 [ 60.904093][ T6806] ext4_getblk+0xad/0x520 [ 60.908558][ T6806] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.914277][ T6806] ? ext4_free_inode+0x1700/0x1700 [ 60.919465][ T6806] ext4_bread+0x7c/0x380 [ 60.923712][ T6806] ? ext4_getblk+0x520/0x520 [ 60.928299][ T6806] ? dquot_get_next_dqblk+0x180/0x180 [ 60.933666][ T6806] ext4_append+0x153/0x360 [ 60.938072][ T6806] ext4_mkdir+0x5e0/0xdf0 [ 60.942482][ T6806] ? ext4_rmdir+0xde0/0xde0 [ 60.947176][ T6806] ? security_inode_permission+0xc4/0xf0 [ 60.953160][ T6806] vfs_mkdir+0x419/0x690 [ 60.957386][ T6806] do_mkdirat+0x21e/0x280 [ 60.961713][ T6806] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.966547][ T6806] ? do_syscall_64+0x1c/0xe0 [ 60.971125][ T6806] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.977103][ T6806] do_syscall_64+0x60/0xe0 [ 60.981519][ T6806] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.987388][ T6806] RIP: 0033:0x45bee7 [ 60.991359][ T6806] Code: Bad RIP value. [ 60.995414][ T6806] RSP: 002b:00007ffe37ce4098 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 61.003804][ T6806] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 61.011792][ T6806] RDX: 00007ffe37ce40e3 RSI: 00000000000001ff RDI: 00007ffe37ce40e0 [ 61.015724][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 61.019762][ T6806] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 61.019783][ T6806] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 61.028896][ T1157] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.036750][ T6806] R13: 00007ffe37ce40d0 R14: 0000000000000000 R15: 00007ffe37ce40e0 [ 61.058806][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-next-20200609-syzkaller #0 [ 61.067916][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.078102][ T1157] Call Trace: [ 61.081583][ T1157] dump_stack+0x18f/0x20d [ 61.086092][ T1157] check_preemption_disabled+0x20d/0x220 [ 61.091739][ T1157] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.096883][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.102377][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.108547][ T1157] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.113879][ T1157] ? ext4_ext_release+0x10/0x10 [ 61.120105][ T1157] ? down_write_killable+0x170/0x170 [ 61.125414][ T1157] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.130896][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 61.135776][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.141003][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.146564][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.152558][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.158047][ T1157] ext4_writepages+0x1a83/0x33c0 [ 61.163032][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.168655][ T1157] ? __lock_acquire+0x2224/0x48b0 [ 61.173688][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.181732][ T1157] ? do_writepages+0xf3/0x2a0 [ 61.186449][ T1157] do_writepages+0xf3/0x2a0 [ 61.191069][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 61.196724][ T1157] ? do_raw_spin_lock+0x120/0x2d0 [ 61.201760][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 61.202341][ T6806] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6806 [ 61.206972][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 61.206991][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.207006][ T1157] ? collapse_file+0x35a2/0x4330 [ 61.207019][ T1157] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 61.207041][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.216443][ T6806] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.221339][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.256861][ T1157] collapse_file+0x35ac/0x4330 [ 61.261630][ T1157] ? collapse_huge_page+0x4350/0x4350 [ 61.266991][ T1157] ? khugepaged+0x2506/0x3fc0 [ 61.271670][ T1157] khugepaged+0x3041/0x3fc0 [ 61.276177][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.281811][ T1157] ? lock_downgrade+0x840/0x840 [ 61.286656][ T1157] ? finish_wait+0x260/0x260 [ 61.291232][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.297022][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.302990][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 61.307999][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.313615][ T1157] kthread+0x3b5/0x4a0 [ 61.317668][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.323368][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.329073][ T1157] ret_from_fork+0x1f/0x30 [ 61.333508][ T6806] CPU: 1 PID: 6806 Comm: syz-executor.0 Not tainted 5.7.0-next-20200609-syzkaller #0 [ 61.342975][ T6806] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.353040][ T6806] Call Trace: [ 61.356354][ T6806] dump_stack+0x18f/0x20d [ 61.360835][ T6806] check_preemption_disabled+0x20d/0x220 [ 61.366489][ T6806] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.371620][ T6806] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.377092][ T6806] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.382805][ T6806] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.388091][ T6806] ? ext4_ext_release+0x10/0x10 [ 61.392961][ T6806] ? down_write_killable+0x170/0x170 [ 61.398256][ T6806] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.403724][ T6806] ext4_map_blocks+0x4cb/0x1640 [ 61.408590][ T6806] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.413765][ T6806] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.419314][ T6806] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.425283][ T6806] ? prandom_u32_state+0xe/0x170 [ 61.430205][ T6806] ? __brelse+0x84/0xa0 [ 61.434363][ T6806] ? __ext4_new_inode+0x144/0x55e0 [ 61.439473][ T6806] ext4_getblk+0xad/0x520 [ 61.443796][ T6806] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.449558][ T6806] ? ext4_free_inode+0x1700/0x1700 [ 61.455090][ T6806] ext4_bread+0x7c/0x380 [ 61.459308][ T6806] ? ext4_getblk+0x520/0x520 [ 61.464027][ T6806] ? dquot_get_next_dqblk+0x180/0x180 [ 61.469423][ T6806] ext4_append+0x153/0x360 [ 61.473927][ T6806] ext4_mkdir+0x5e0/0xdf0 [ 61.478289][ T6806] ? ext4_rmdir+0xde0/0xde0 [ 61.482779][ T6806] ? security_inode_permission+0xc4/0xf0 [ 61.488408][ T6806] vfs_mkdir+0x419/0x690 [ 61.492671][ T6806] do_mkdirat+0x21e/0x280 [ 61.497006][ T6806] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.501842][ T6806] ? do_syscall_64+0x1c/0xe0 [ 61.506433][ T6806] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.512483][ T6806] do_syscall_64+0x60/0xe0 [ 61.516881][ T6806] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.522763][ T6806] RIP: 0033:0x45bee7 [ 61.526630][ T6806] Code: Bad RIP value. 2020/06/10 07:01:07 building call list... [ 61.530673][ T6806] RSP: 002b:00007ffe37ce4098 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 61.539079][ T6806] RAX: ffffffffffffffda RBX: 000000000000ef0c RCX: 000000000045bee7 [ 61.547031][ T6806] RDX: 00007ffe37ce40e3 RSI: 00000000000001ff RDI: 00007ffe37ce40e0 [ 61.555079][ T6806] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 61.563160][ T6806] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 61.571203][ T6806] R13: 00007ffe37ce40d0 R14: 000000000000ee8d R15: 00007ffe37ce40e0 [ 61.834194][ T25] tipc: TX() has been purged, node left! executing program [ 63.372767][ T6832] can: request_module (can-proto-0) failed. [ 63.849095][ T6832] can: request_module (can-proto-0) failed. [ 63.860455][ T6832] can: request_module (can-proto-0) failed.