[ 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... [ OK ] Started Update UTMP about System Runlevel Changes. [ 53.669673][ T6903] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6903 [ 53.679267][ T6903] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 53.685613][ T6903] CPU: 0 PID: 6903 Comm: systemd-rfkill Not tainted 5.7.0-next-20200609-syzkaller #0 [ 53.695211][ T6903] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.705294][ T6903] Call Trace: [ 53.708572][ T6903] dump_stack+0x18f/0x20d [ 53.712893][ T6903] check_preemption_disabled+0x20d/0x220 [ 53.718507][ T6903] ext4_mb_new_blocks+0xa4d/0x3b70 [ 53.723952][ T6903] ? ext4_ext_search_right+0x2ca/0xb20 [ 53.729404][ T6903] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 53.735104][ T6903] ext4_ext_map_blocks+0x201b/0x33e0 [ 53.740371][ T6903] ? ext4_ext_release+0x10/0x10 [ 53.745230][ T6903] ? down_write_killable+0x170/0x170 [ 53.750493][ T6903] ? ext4_es_lookup_extent+0x41d/0xd10 [ 53.755934][ T6903] ext4_map_blocks+0x4cb/0x1640 [ 53.760784][ T6903] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 53.765969][ T6903] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 53.773325][ T6903] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 53.779287][ T6903] ? prandom_u32_state+0xe/0x170 [ 53.784222][ T6903] ? __brelse+0x84/0xa0 [ 53.788358][ T6903] ? __ext4_new_inode+0x144/0x55e0 [ 53.793449][ T6903] ext4_getblk+0xad/0x520 [ 53.797756][ T6903] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 53.803456][ T6903] ? ext4_free_inode+0x1700/0x1700 [ 53.808544][ T6903] ext4_bread+0x7c/0x380 [ 53.812771][ T6903] ? ext4_getblk+0x520/0x520 [ 53.817359][ T6903] ? dquot_get_next_dqblk+0x180/0x180 [ 53.822729][ T6903] ext4_append+0x153/0x360 [ 53.827138][ T6903] ext4_mkdir+0x5e0/0xdf0 [ 53.831450][ T6903] ? ext4_rmdir+0xde0/0xde0 [ 53.836046][ T6903] ? security_inode_permission+0xc4/0xf0 [ 53.841662][ T6903] vfs_mkdir+0x419/0x690 [ 53.845886][ T6903] do_mkdirat+0x21e/0x280 [ 53.850293][ T6903] ? __ia32_sys_mknod+0xb0/0xb0 [ 53.855138][ T6903] ? do_syscall_64+0x1c/0xe0 [ 53.859720][ T6903] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 53.865940][ T6903] do_syscall_64+0x60/0xe0 [ 53.870337][ T6903] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 53.876207][ T6903] RIP: 0033:0x7fdc3cdcd687 [ 53.880611][ T6903] Code: Bad RIP value. [ 53.884670][ T6903] RSP: 002b:00007ffc9ce8ede8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 53.893053][ T6903] RAX: ffffffffffffffda RBX: 0000562682898985 RCX: 00007fdc3cdcd687 [ 53.901016][ T6903] RDX: 00007ffc9ce8ecb0 RSI: 00000000000001ed RDI: 0000562682898985 [ 53.909038][ T6903] RBP: 00007fdc3cdcd680 R08: 0000000000000100 R09: 0000000000000000 [ 53.916992][ T6903] R10: 0000562682898980 R11: 0000000000000246 R12: 00000000000001ed [ 53.924960][ T6903] R13: 00007ffc9ce8ef70 R14: 0000000000000000 R15: 0000000000000000 Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 57.232992][ T26] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/26 [ 57.242041][ T26] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 57.248058][ T26] CPU: 1 PID: 26 Comm: kworker/u4:2 Not tainted 5.7.0-next-20200609-syzkaller #0 [ 57.257166][ T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.267209][ T26] Workqueue: writeback wb_workfn (flush-8:0) [ 57.273174][ T26] Call Trace: [ 57.276445][ T26] dump_stack+0x18f/0x20d [ 57.280758][ T26] check_preemption_disabled+0x20d/0x220 [ 57.286384][ T26] ext4_mb_new_blocks+0xa4d/0x3b70 [ 57.291477][ T26] ? ext4_find_extent+0x81a/0xad0 [ 57.296610][ T26] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.303180][ T26] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.308883][ T26] ext4_ext_map_blocks+0x201b/0x33e0 [ 57.314158][ T26] ? ext4_ext_release+0x10/0x10 [ 57.319003][ T26] ? down_write_killable+0x170/0x170 [ 57.324270][ T26] ? ext4_es_lookup_extent+0x41d/0xd10 [ 57.329712][ T26] ext4_map_blocks+0x4cb/0x1640 [ 57.334555][ T26] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.339751][ T26] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.345289][ T26] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.355585][ T26] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 57.361029][ T26] ext4_writepages+0x1a83/0x33c0 [ 57.365988][ T26] ? __ext4_mark_inode_dirty+0x940/0x940 [ 57.371620][ T26] ? __lock_acquire+0x2224/0x48b0 [ 57.376658][ T26] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.382636][ T26] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.388601][ T26] ? __ext4_mark_inode_dirty+0x940/0x940 [ 57.394209][ T26] ? do_writepages+0xf3/0x2a0 [ 57.398880][ T26] do_writepages+0xf3/0x2a0 [ 57.403379][ T26] ? page_writeback_cpu_online+0x10/0x10 [ 57.408992][ T26] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.414516][ T26] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.420478][ T26] ? lock_downgrade+0x840/0x840 [ 57.425313][ T26] __writeback_single_inode+0x12a/0x13d0 [ 57.430928][ T26] ? _raw_spin_unlock+0x24/0x40 [ 57.435761][ T26] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 57.441722][ T26] writeback_sb_inodes+0x515/0xdc0 [ 57.446819][ T26] ? __writeback_single_inode+0x13d0/0x13d0 [ 57.452716][ T26] __writeback_inodes_wb+0xc3/0x250 [ 57.457895][ T26] wb_writeback+0x8c8/0xd40 [ 57.462380][ T26] ? writeback_inodes_wb.constprop.0+0x190/0x190 [ 57.468706][ T26] ? cpumask_next+0x3c/0x40 [ 57.473190][ T26] ? get_nr_dirty_inodes+0xd6/0x130 [ 57.478368][ T26] wb_workfn+0xab3/0x1090 [ 57.482681][ T26] ? inode_wait_for_writeback+0x30/0x30 [ 57.488645][ T26] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.494169][ T26] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.500151][ T26] process_one_work+0x965/0x1690 [ 57.505072][ T26] ? lock_release+0x800/0x800 [ 57.509727][ T26] ? pwq_dec_nr_in_flight+0x310/0x310 [ 57.515078][ T26] ? rwlock_bug.part.0+0x90/0x90 [ 57.520002][ T26] worker_thread+0x96/0xe10 [ 57.524498][ T26] ? process_one_work+0x1690/0x1690 [ 57.529671][ T26] kthread+0x3b5/0x4a0 [ 57.533713][ T26] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.539405][ T26] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.545100][ T26] ret_from_fork+0x1f/0x30 Warning: Permanently added '10.128.1.22' (ECDSA) to the list of known hosts. 2020/06/10 01:23:39 fuzzer started 2020/06/10 01:23:39 connecting to host at 10.128.0.26:43305 2020/06/10 01:23:39 checking machine... 2020/06/10 01:23:39 checking revisions... 2020/06/10 01:23:39 testing simple program... [ 58.932823][ T6926] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6926 [ 58.941883][ T6926] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.947950][ T6926] CPU: 1 PID: 6926 Comm: syz-fuzzer Not tainted 5.7.0-next-20200609-syzkaller #0 [ 58.957084][ T6926] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.967123][ T6926] Call Trace: [ 58.970418][ T6926] dump_stack+0x18f/0x20d [ 58.974757][ T6926] check_preemption_disabled+0x20d/0x220 [ 58.980390][ T6926] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.985513][ T6926] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.990976][ T6926] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.996705][ T6926] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.001987][ T6926] ? ext4_ext_release+0x10/0x10 [ 59.007345][ T6926] ? down_write_killable+0x170/0x170 [ 59.012606][ T6926] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.018045][ T6926] ext4_map_blocks+0x4cb/0x1640 [ 59.022875][ T6926] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.028047][ T6926] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.033587][ T6926] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.039541][ T6926] ? prandom_u32_state+0xe/0x170 [ 59.044456][ T6926] ? __brelse+0x84/0xa0 [ 59.048597][ T6926] ? __ext4_new_inode+0x144/0x55e0 [ 59.053686][ T6926] ext4_getblk+0xad/0x520 [ 59.057993][ T6926] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.063690][ T6926] ? ext4_free_inode+0x1700/0x1700 [ 59.068789][ T6926] ext4_bread+0x7c/0x380 [ 59.073004][ T6926] ? ext4_getblk+0x520/0x520 [ 59.077569][ T6926] ? dquot_get_next_dqblk+0x180/0x180 [ 59.082930][ T6926] ext4_append+0x153/0x360 [ 59.087349][ T6926] ext4_mkdir+0x5e0/0xdf0 [ 59.091774][ T6926] ? ext4_rmdir+0xde0/0xde0 [ 59.096271][ T6926] ? security_inode_permission+0xc4/0xf0 [ 59.101893][ T6926] vfs_mkdir+0x419/0x690 [ 59.106120][ T6926] do_mkdirat+0x21e/0x280 [ 59.110428][ T6926] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.115259][ T6926] ? do_syscall_64+0x1c/0xe0 [ 59.119891][ T6926] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.125866][ T6926] do_syscall_64+0x60/0xe0 [ 59.130265][ T6926] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.136141][ T6926] RIP: 0033:0x4b02a0 [ 59.140048][ T6926] Code: Bad RIP value. [ 59.144103][ T6926] RSP: 002b:000000c0000fd4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 59.152494][ T6926] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 59.160445][ T6926] RDX: 00000000000001c0 RSI: 000000c000026f00 RDI: ffffffffffffff9c [ 59.168413][ T6926] RBP: 000000c0000fd510 R08: 0000000000000000 R09: 0000000000000000 [ 59.176361][ T6926] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 59.184307][ T6926] R13: 0000000000000079 R14: 0000000000000078 R15: 0000000000000100 [ 59.199319][ T6929] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6929 [ 59.208893][ T6929] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.214916][ T6929] CPU: 1 PID: 6929 Comm: syz-executor.0 Not tainted 5.7.0-next-20200609-syzkaller #0 [ 59.224363][ T6929] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.234425][ T6929] Call Trace: [ 59.237716][ T6929] dump_stack+0x18f/0x20d [ 59.242061][ T6929] check_preemption_disabled+0x20d/0x220 [ 59.247688][ T6929] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.252797][ T6929] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.258231][ T6929] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.263946][ T6929] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.269208][ T6929] ? ext4_ext_release+0x10/0x10 [ 59.274043][ T6929] ? down_write_killable+0x170/0x170 [ 59.279301][ T6929] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.284742][ T6929] ext4_map_blocks+0x4cb/0x1640 [ 59.289571][ T6929] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.294745][ T6929] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.300264][ T6929] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.306217][ T6929] ? prandom_u32_state+0xe/0x170 [ 59.311143][ T6929] ? __brelse+0x84/0xa0 [ 59.315283][ T6929] ? __ext4_new_inode+0x144/0x55e0 [ 59.320390][ T6929] ext4_getblk+0xad/0x520 [ 59.325656][ T6929] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.331356][ T6929] ? ext4_free_inode+0x1700/0x1700 [ 59.336444][ T6929] ext4_bread+0x7c/0x380 [ 59.340661][ T6929] ? ext4_getblk+0x520/0x520 [ 59.345227][ T6929] ? dquot_get_next_dqblk+0x180/0x180 [ 59.350593][ T6929] ext4_append+0x153/0x360 [ 59.355013][ T6929] ext4_mkdir+0x5e0/0xdf0 [ 59.359343][ T6929] ? ext4_rmdir+0xde0/0xde0 [ 59.363900][ T6929] ? security_inode_permission+0xc4/0xf0 [ 59.369542][ T6929] vfs_mkdir+0x419/0x690 [ 59.373770][ T6929] do_mkdirat+0x21e/0x280 [ 59.378094][ T6929] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.382937][ T6929] ? do_syscall_64+0x1c/0xe0 [ 59.387512][ T6929] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.393472][ T6929] do_syscall_64+0x60/0xe0 [ 59.397868][ T6929] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.403734][ T6929] RIP: 0033:0x45bee7 [ 59.407597][ T6929] Code: Bad RIP value. [ 59.411635][ T6929] RSP: 002b:00007ffc1c16d5a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 59.420021][ T6929] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 59.427968][ T6929] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffc1c16d780 [ 59.435914][ T6929] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002e00 [ 59.444813][ T6929] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 59.452760][ T6929] R13: 00007ffc1c16d780 R14: 8421084210842109 R15: 00007ffc1c16d78c [ 59.533550][ T6930] IPVS: ftp: loaded support on port[0] = 21 [ 59.568580][ T6930] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6930 [ 59.578024][ T6930] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.584131][ T6930] CPU: 0 PID: 6930 Comm: syz-executor.0 Not tainted 5.7.0-next-20200609-syzkaller #0 [ 59.593732][ T6930] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.603780][ T6930] Call Trace: [ 59.607066][ T6930] dump_stack+0x18f/0x20d [ 59.611380][ T6930] check_preemption_disabled+0x20d/0x220 [ 59.617001][ T6930] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.622093][ T6930] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.627527][ T6930] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.633224][ T6930] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.638490][ T6930] ? ext4_ext_release+0x10/0x10 [ 59.643330][ T6930] ? down_write_killable+0x170/0x170 [ 59.648602][ T6930] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.654052][ T6930] ext4_map_blocks+0x4cb/0x1640 [ 59.658893][ T6930] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.664083][ T6930] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.669604][ T6930] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.675569][ T6930] ? prandom_u32_state+0xe/0x170 [ 59.680506][ T6930] ? __brelse+0x84/0xa0 [ 59.684652][ T6930] ? __ext4_new_inode+0x144/0x55e0 [ 59.689755][ T6930] ext4_getblk+0xad/0x520 [ 59.694073][ T6930] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.699771][ T6930] ? ext4_free_inode+0x1700/0x1700 [ 59.704870][ T6930] ext4_bread+0x7c/0x380 [ 59.709099][ T6930] ? ext4_getblk+0x520/0x520 [ 59.713683][ T6930] ? dquot_get_next_dqblk+0x180/0x180 [ 59.719043][ T6930] ext4_append+0x153/0x360 [ 59.723445][ T6930] ext4_mkdir+0x5e0/0xdf0 [ 59.727759][ T6930] ? ext4_rmdir+0xde0/0xde0 [ 59.732240][ T6930] ? security_inode_permission+0xc4/0xf0 [ 59.737860][ T6930] vfs_mkdir+0x419/0x690 [ 59.742347][ T6930] do_mkdirat+0x21e/0x280 [ 59.746663][ T6930] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.751489][ T6930] ? do_syscall_64+0x1c/0xe0 [ 59.756073][ T6930] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.762029][ T6930] do_syscall_64+0x60/0xe0 [ 59.766425][ T6930] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.772379][ T6930] RIP: 0033:0x45bee7 [ 59.776244][ T6930] Code: Bad RIP value. [ 59.780292][ T6930] RSP: 002b:00007ffc1c16d498 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 59.788687][ T6930] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 59.796633][ T6930] RDX: 00007ffc1c16d4e3 RSI: 00000000000001ff RDI: 00007ffc1c16d4e0 [ 59.804580][ T6930] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 59.812529][ T6930] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 59.820475][ T6930] R13: 00007ffc1c16d4d0 R14: 0000000000000000 R15: 00007ffc1c16d4e0 [ 59.871054][ T6930] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6930 [ 59.881028][ T6930] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.887096][ T6930] CPU: 1 PID: 6930 Comm: syz-executor.0 Not tainted 5.7.0-next-20200609-syzkaller #0 [ 59.896546][ T6930] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.906713][ T6930] Call Trace: [ 59.910025][ T6930] dump_stack+0x18f/0x20d [ 59.914360][ T6930] check_preemption_disabled+0x20d/0x220 [ 59.919985][ T6930] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.925104][ T6930] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.930567][ T6930] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.936297][ T6930] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.941607][ T6930] ? ext4_ext_release+0x10/0x10 [ 59.946481][ T6930] ? down_write_killable+0x170/0x170 [ 59.952725][ T6930] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.958205][ T6930] ext4_map_blocks+0x4cb/0x1640 [ 59.963064][ T6930] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.968238][ T6930] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.973762][ T6930] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.979719][ T6930] ? prandom_u32_state+0xe/0x170 [ 59.984649][ T6930] ? __brelse+0x84/0xa0 [ 59.988794][ T6930] ? __ext4_new_inode+0x144/0x55e0 [ 59.993970][ T6930] ext4_getblk+0xad/0x520 [ 59.998279][ T6930] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.003980][ T6930] ? ext4_free_inode+0x1700/0x1700 [ 60.009068][ T6930] ext4_bread+0x7c/0x380 [ 60.013287][ T6930] ? ext4_getblk+0x520/0x520 [ 60.017867][ T6930] ? dquot_get_next_dqblk+0x180/0x180 [ 60.023228][ T6930] ext4_append+0x153/0x360 [ 60.027624][ T6930] ext4_mkdir+0x5e0/0xdf0 [ 60.031934][ T6930] ? ext4_rmdir+0xde0/0xde0 [ 60.036515][ T6930] ? security_inode_permission+0xc4/0xf0 [ 60.042125][ T6930] vfs_mkdir+0x419/0x690 [ 60.046608][ T6930] do_mkdirat+0x21e/0x280 [ 60.050939][ T6930] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.055876][ T6930] ? do_syscall_64+0x1c/0xe0 [ 60.060454][ T6930] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.066417][ T6930] do_syscall_64+0x60/0xe0 [ 60.070826][ T6930] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.076693][ T6930] RIP: 0033:0x45bee7 [ 60.080570][ T6930] Code: Bad RIP value. [ 60.084643][ T6930] RSP: 002b:00007ffc1c16d498 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 60.093036][ T6930] RAX: ffffffffffffffda RBX: 000000000000e9da RCX: 000000000045bee7 [ 60.100987][ T6930] RDX: 00007ffc1c16d4e3 RSI: 00000000000001ff RDI: 00007ffc1c16d4e0 [ 60.108963][ T6930] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 2020/06/10 01:23:41 building call list... [ 60.116915][ T6930] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 60.124879][ T6930] R13: 00007ffc1c16d4d0 R14: 000000000000e9c9 R15: 00007ffc1c16d4e0 [ 60.392645][ T26] tipc: TX() has been purged, node left! executing program [ 61.845809][ T6925] can: request_module (can-proto-0) failed. [ 62.391930][ T6925] can: request_module (can-proto-0) failed. [ 62.403254][ T6925] can: request_module (can-proto-0) failed. [ 62.854991][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 62.864169][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.870049][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-next-20200609-syzkaller #0 [ 62.879137][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.889196][ T1154] Call Trace: [ 62.892474][ T1154] dump_stack+0x18f/0x20d [ 62.896789][ T1154] check_preemption_disabled+0x20d/0x220 [ 62.902429][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.907562][ T1154] ? ext4_find_extent+0x81a/0xad0 [ 62.912618][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.918070][ T1154] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.923786][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 62.929065][ T1154] ? ext4_ext_release+0x10/0x10 [ 62.933914][ T1154] ? down_write_killable+0x170/0x170 [ 62.939184][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 62.944637][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 62.949517][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.954747][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.960278][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.966239][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.971678][ T1154] ext4_writepages+0x1a83/0x33c0 [ 62.976692][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.982329][ T1154] ? __lock_acquire+0x2224/0x48b0 [ 62.987361][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.993514][ T1154] ? do_writepages+0xf3/0x2a0 [ 62.998167][ T1154] do_writepages+0xf3/0x2a0 [ 63.002655][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 63.008264][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 63.013263][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 63.018448][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 63.023292][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 63.028986][ T1154] ? collapse_file+0x35a2/0x4330 [ 63.033898][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 63.039950][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 63.045138][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.051098][ T1154] collapse_file+0x35ac/0x4330 [ 63.055846][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 63.061192][ T1154] ? khugepaged+0x2506/0x3fc0 [ 63.065853][ T1154] ? xas_find+0x31a/0x880 [ 63.070161][ T1154] ? check_preemption_disabled+0x38/0x220 [ 63.075860][ T1154] khugepaged+0x3041/0x3fc0 [ 63.080363][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.085975][ T1154] ? lock_downgrade+0x840/0x840 [ 63.090801][ T1154] ? finish_wait+0x260/0x260 [ 63.095389][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 63.101181][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.107144][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 63.112146][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.119574][ T1154] kthread+0x3b5/0x4a0 [ 63.123631][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.129330][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.135048][ T1154] ret_from_fork+0x1f/0x30