[ 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. Starting Load/Save RF Kill Switch Status... [ 52.150990][ T6732] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6732 [ 52.160615][ T6732] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 52.166959][ T6732] CPU: 0 PID: 6732 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 52.175213][ T6732] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.185248][ T6732] Call Trace: [ 52.188520][ T6732] dump_stack+0x188/0x20d [ 52.192840][ T6732] debug_smp_processor_id.cold+0x88/0x9b [ 52.198447][ T6732] ext4_mb_new_blocks+0xa77/0x3b30 [ 52.203541][ T6732] ? ext4_ext_search_right+0x2ca/0xb20 [ 52.208985][ T6732] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 52.214682][ T6732] ext4_ext_map_blocks+0x2044/0x3410 [ 52.219944][ T6732] ? ext4_ext_release+0x10/0x10 [ 52.224779][ T6732] ? __down_timeout+0x2d0/0x2d0 [ 52.229613][ T6732] ? ext4_es_lookup_extent+0x41d/0xd30 [ 52.235053][ T6732] ext4_map_blocks+0x4cb/0x1640 [ 52.239894][ T6732] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 52.245071][ T6732] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.250590][ T6732] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.256585][ T6732] ? prandom_u32_state+0xe/0x170 [ 52.261496][ T6732] ? __brelse+0x84/0xa0 [ 52.265635][ T6732] ? __ext4_new_inode+0x144/0x57c0 [ 52.270985][ T6732] ext4_getblk+0xad/0x520 [ 52.275303][ T6732] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 52.281000][ T6732] ? ext4_free_inode+0x17e0/0x17e0 [ 52.286091][ T6732] ext4_bread+0x7c/0x380 [ 52.290316][ T6732] ? ext4_getblk+0x520/0x520 [ 52.294878][ T6732] ? dqget+0xff0/0xff0 [ 52.298940][ T6732] ext4_append+0x153/0x360 [ 52.303333][ T6732] ext4_mkdir+0x5e0/0xdf0 [ 52.307643][ T6732] ? ext4_rmdir+0xde0/0xde0 [ 52.312136][ T6732] ? security_inode_permission+0xc4/0xf0 [ 52.317748][ T6732] vfs_mkdir+0x419/0x690 [ 52.321989][ T6732] do_mkdirat+0x21e/0x280 [ 52.326321][ T6732] ? __ia32_sys_mknod+0xb0/0xb0 [ 52.331145][ T6732] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.337102][ T6732] ? do_syscall_64+0x21/0x7d0 [ 52.341755][ T6732] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.347712][ T6732] do_syscall_64+0xf6/0x7d0 [ 52.352193][ T6732] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 52.358069][ T6732] RIP: 0033:0x7f0f179f3687 [ 52.362466][ T6732] Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 [ 52.382047][ T6732] RSP: 002b:00007ffecdb7d858 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 52.390435][ T6732] RAX: ffffffffffffffda RBX: 000055ae4d8ec985 RCX: 00007f0f179f3687 [ 52.398383][ T6732] RDX: 00007ffecdb7d720 RSI: 00000000000001ed RDI: 000055ae4d8ec985 [ 52.406342][ T6732] RBP: 00007f0f179f3680 R08: 0000000000000100 R09: 0000000000000000 [ 52.414320][ T6732] R10: 000055ae4d8ec980 R11: 0000000000000246 R12: 00000000000001ed [ 52.422267][ T6732] R13: 00007ffecdb7d9e0 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 56.763891][ T229] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/229 [ 56.773012][ T229] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 56.779206][ T229] CPU: 0 PID: 229 Comm: kworker/u4:5 Not tainted 5.7.0-syzkaller #0 [ 56.787178][ T229] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.797236][ T229] Workqueue: writeback wb_workfn (flush-8:0) [ 56.803208][ T229] Call Trace: [ 56.806481][ T229] dump_stack+0x188/0x20d [ 56.810805][ T229] debug_smp_processor_id.cold+0x88/0x9b [ 56.816417][ T229] ext4_mb_new_blocks+0xa77/0x3b30 [ 56.821503][ T229] ? __kmalloc+0x62f/0x7a0 [ 56.825910][ T229] ? ext4_ext_search_right+0x2ca/0xb20 [ 56.831346][ T229] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 56.837065][ T229] ext4_ext_map_blocks+0x2044/0x3410 [ 56.842334][ T229] ? ext4_ext_release+0x10/0x10 [ 56.847174][ T229] ? __down_timeout+0x2d0/0x2d0 [ 56.852012][ T229] ? ext4_es_lookup_extent+0x41d/0xd30 [ 56.857445][ T229] ? debug_smp_processor_id+0x2f/0x185 [ 56.862882][ T229] ext4_map_blocks+0x4cb/0x1640 [ 56.867728][ T229] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 56.872914][ T229] ? debug_smp_processor_id+0x2f/0x185 [ 56.878363][ T229] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.883891][ T229] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.889849][ T229] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 56.895300][ T229] ext4_writepages+0x1ab7/0x3400 [ 56.900226][ T229] ? __ext4_mark_inode_dirty+0x950/0x950 [ 56.905836][ T229] ? __lock_acquire+0x2224/0x48a0 [ 56.910847][ T229] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.916811][ T229] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.922769][ T229] ? __ext4_mark_inode_dirty+0x950/0x950 [ 56.928375][ T229] ? do_writepages+0xfa/0x2a0 [ 56.933040][ T229] do_writepages+0xfa/0x2a0 [ 56.937523][ T229] ? page_writeback_cpu_online+0x10/0x10 [ 56.943129][ T229] ? debug_smp_processor_id+0x2f/0x185 [ 56.948567][ T229] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.954105][ T229] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.960072][ T229] ? lock_downgrade+0x840/0x840 [ 56.964902][ T229] __writeback_single_inode+0x12a/0x1410 [ 56.970510][ T229] ? _raw_spin_unlock+0x24/0x40 [ 56.975349][ T229] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 56.981306][ T229] writeback_sb_inodes+0x515/0xdd0 [ 56.986404][ T229] ? __writeback_single_inode+0x1410/0x1410 [ 56.992284][ T229] __writeback_inodes_wb+0xc3/0x250 [ 56.997464][ T229] wb_writeback+0x910/0xd90 [ 57.001958][ T229] ? print_usage_bug+0x240/0x240 [ 57.006875][ T229] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 57.013177][ T229] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 57.019049][ T229] ? cpumask_next+0x3c/0x40 [ 57.023529][ T229] ? get_nr_dirty_inodes+0xd6/0x130 [ 57.028706][ T229] wb_workfn+0xadf/0x10d0 [ 57.033031][ T229] ? inode_wait_for_writeback+0x30/0x30 [ 57.038550][ T229] ? debug_smp_processor_id+0x2f/0x185 [ 57.043989][ T229] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.049511][ T229] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.055471][ T229] process_one_work+0x965/0x16a0 [ 57.060397][ T229] ? lock_release+0x800/0x800 [ 57.065050][ T229] ? pwq_dec_nr_in_flight+0x310/0x310 [ 57.070413][ T229] ? rwlock_bug.part.0+0x90/0x90 [ 57.075355][ T229] worker_thread+0x96/0xe10 [ 57.079841][ T229] ? process_one_work+0x16a0/0x16a0 [ 57.085020][ T229] kthread+0x388/0x470 [ 57.089066][ T229] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.094761][ T229] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.100469][ T229] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.0.217' (ECDSA) to the list of known hosts. 2020/06/16 06:19:13 fuzzer started 2020/06/16 06:19:13 connecting to host at 10.128.0.26:32941 2020/06/16 06:19:13 checking machine... 2020/06/16 06:19:13 checking revisions... 2020/06/16 06:19:13 testing simple program... [ 58.030084][ T6801] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6801 [ 58.039162][ T6801] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.045409][ T6801] CPU: 1 PID: 6801 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 58.053297][ T6801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.063341][ T6801] Call Trace: [ 58.066615][ T6801] dump_stack+0x188/0x20d [ 58.070926][ T6801] debug_smp_processor_id.cold+0x88/0x9b [ 58.076548][ T6801] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.081644][ T6801] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.087093][ T6801] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.092803][ T6801] ext4_ext_map_blocks+0x2044/0x3410 [ 58.098069][ T6801] ? ext4_ext_release+0x10/0x10 [ 58.102933][ T6801] ? __down_timeout+0x2d0/0x2d0 [ 58.107760][ T6801] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.113203][ T6801] ext4_map_blocks+0x4cb/0x1640 [ 58.118034][ T6801] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.123218][ T6801] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.128752][ T6801] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.134721][ T6801] ? prandom_u32_state+0xe/0x170 [ 58.139740][ T6801] ? __brelse+0x84/0xa0 [ 58.143872][ T6801] ? __ext4_new_inode+0x144/0x57c0 [ 58.148967][ T6801] ext4_getblk+0xad/0x520 [ 58.153285][ T6801] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.159102][ T6801] ? ext4_free_inode+0x17e0/0x17e0 [ 58.164213][ T6801] ext4_bread+0x7c/0x380 [ 58.168433][ T6801] ? ext4_getblk+0x520/0x520 [ 58.173010][ T6801] ? dqget+0xff0/0xff0 [ 58.177077][ T6801] ext4_append+0x153/0x360 [ 58.181471][ T6801] ext4_mkdir+0x5e0/0xdf0 [ 58.185800][ T6801] ? ext4_rmdir+0xde0/0xde0 [ 58.190293][ T6801] ? security_inode_permission+0xc4/0xf0 [ 58.195905][ T6801] vfs_mkdir+0x419/0x690 [ 58.200124][ T6801] do_mkdirat+0x21e/0x280 [ 58.204443][ T6801] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.209271][ T6801] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.215241][ T6801] ? do_syscall_64+0x21/0x7d0 [ 58.219902][ T6801] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.225952][ T6801] do_syscall_64+0xf6/0x7d0 [ 58.230455][ T6801] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.236422][ T6801] RIP: 0033:0x4b02a0 [ 58.240298][ T6801] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 58.259891][ T6801] RSP: 002b:000000c0000e34b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 58.268293][ T6801] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 58.276252][ T6801] RDX: 00000000000001c0 RSI: 000000c0000e8c00 RDI: ffffffffffffff9c [ 58.284202][ T6801] RBP: 000000c0000e3510 R08: 0000000000000000 R09: 0000000000000000 [ 58.292235][ T6801] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 58.300183][ T6801] R13: 0000000000000061 R14: 0000000000000060 R15: 0000000000000100 [ 58.316310][ T6812] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6812 [ 58.325990][ T6812] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.331874][ T6812] CPU: 1 PID: 6812 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.340091][ T6812] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.350119][ T6812] Call Trace: [ 58.353389][ T6812] dump_stack+0x188/0x20d [ 58.357711][ T6812] debug_smp_processor_id.cold+0x88/0x9b [ 58.363324][ T6812] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.368446][ T6812] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.373880][ T6812] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.379579][ T6812] ext4_ext_map_blocks+0x2044/0x3410 [ 58.384866][ T6812] ? ext4_ext_release+0x10/0x10 [ 58.389737][ T6812] ? __down_timeout+0x2d0/0x2d0 [ 58.394583][ T6812] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.400032][ T6812] ext4_map_blocks+0x4cb/0x1640 [ 58.404863][ T6812] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.410039][ T6812] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.415563][ T6812] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.421524][ T6812] ? prandom_u32_state+0xe/0x170 [ 58.426457][ T6812] ? __brelse+0x84/0xa0 [ 58.430587][ T6812] ? __ext4_new_inode+0x144/0x57c0 [ 58.435676][ T6812] ext4_getblk+0xad/0x520 [ 58.439983][ T6812] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.445680][ T6812] ? ext4_free_inode+0x17e0/0x17e0 [ 58.450768][ T6812] ext4_bread+0x7c/0x380 [ 58.454989][ T6812] ? ext4_getblk+0x520/0x520 [ 58.459551][ T6812] ? dqget+0xff0/0xff0 [ 58.463601][ T6812] ext4_append+0x153/0x360 [ 58.467993][ T6812] ext4_mkdir+0x5e0/0xdf0 [ 58.472300][ T6812] ? ext4_rmdir+0xde0/0xde0 [ 58.476780][ T6812] ? security_inode_permission+0xc4/0xf0 [ 58.482649][ T6812] vfs_mkdir+0x419/0x690 [ 58.486965][ T6812] do_mkdirat+0x21e/0x280 [ 58.491363][ T6812] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.496206][ T6812] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.502174][ T6812] ? do_syscall_64+0x21/0x7d0 [ 58.506827][ T6812] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.512799][ T6812] do_syscall_64+0xf6/0x7d0 [ 58.517284][ T6812] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.523149][ T6812] RIP: 0033:0x45bed7 [ 58.527019][ T6812] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 58.546645][ T6812] RSP: 002b:00007fff79d76838 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 58.555036][ T6812] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bed7 [ 58.563074][ T6812] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007fff79d76a10 [ 58.572269][ T6812] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002740 [ 58.580280][ T6812] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 58.588275][ T6812] R13: 00007fff79d76a10 R14: 8421084210842109 R15: 00007fff79d76a1c [ 58.669108][ T6813] IPVS: ftp: loaded support on port[0] = 21 [ 58.706007][ T6813] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6813 [ 58.715650][ T6813] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.721521][ T6813] CPU: 0 PID: 6813 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.729727][ T6813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.739807][ T6813] Call Trace: [ 58.743073][ T6813] dump_stack+0x188/0x20d [ 58.747381][ T6813] debug_smp_processor_id.cold+0x88/0x9b [ 58.752988][ T6813] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.758084][ T6813] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.763518][ T6813] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.769227][ T6813] ext4_ext_map_blocks+0x2044/0x3410 [ 58.774494][ T6813] ? ext4_ext_release+0x10/0x10 [ 58.779328][ T6813] ? __down_timeout+0x2d0/0x2d0 [ 58.784154][ T6813] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.789592][ T6813] ext4_map_blocks+0x4cb/0x1640 [ 58.794422][ T6813] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.799595][ T6813] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.805115][ T6813] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.811068][ T6813] ? prandom_u32_state+0xe/0x170 [ 58.815981][ T6813] ? __brelse+0x84/0xa0 [ 58.820109][ T6813] ? __ext4_new_inode+0x144/0x57c0 [ 58.825205][ T6813] ext4_getblk+0xad/0x520 [ 58.829510][ T6813] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.835206][ T6813] ? ext4_free_inode+0x17e0/0x17e0 [ 58.840291][ T6813] ext4_bread+0x7c/0x380 [ 58.844517][ T6813] ? ext4_getblk+0x520/0x520 [ 58.849080][ T6813] ? dqget+0xff0/0xff0 [ 58.853124][ T6813] ext4_append+0x153/0x360 [ 58.857530][ T6813] ext4_mkdir+0x5e0/0xdf0 [ 58.861848][ T6813] ? ext4_rmdir+0xde0/0xde0 [ 58.866346][ T6813] ? security_inode_permission+0xc4/0xf0 [ 58.871961][ T6813] vfs_mkdir+0x419/0x690 [ 58.876202][ T6813] do_mkdirat+0x21e/0x280 [ 58.880507][ T6813] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.885331][ T6813] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.891310][ T6813] ? do_syscall_64+0x21/0x7d0 [ 58.895973][ T6813] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.901949][ T6813] do_syscall_64+0xf6/0x7d0 [ 58.906453][ T6813] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.912323][ T6813] RIP: 0033:0x45bed7 [ 58.916199][ T6813] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 58.935953][ T6813] RSP: 002b:00007fff79d76728 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 58.944338][ T6813] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bed7 [ 58.952284][ T6813] RDX: 00007fff79d76773 RSI: 00000000000001ff RDI: 00007fff79d76770 [ 58.960229][ T6813] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 58.968187][ T6813] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185c0 [ 58.976133][ T6813] R13: 00007fff79d76760 R14: 0000000000000000 R15: 00007fff79d76770 [ 59.023029][ T6813] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6813 [ 59.032768][ T6813] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.038750][ T6813] CPU: 1 PID: 6813 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.046980][ T6813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.057033][ T6813] Call Trace: [ 59.060328][ T6813] dump_stack+0x188/0x20d [ 59.064669][ T6813] debug_smp_processor_id.cold+0x88/0x9b [ 59.070303][ T6813] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.075430][ T6813] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.080892][ T6813] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.086620][ T6813] ext4_ext_map_blocks+0x2044/0x3410 [ 59.091896][ T6813] ? ext4_ext_release+0x10/0x10 [ 59.096750][ T6813] ? __down_timeout+0x2d0/0x2d0 [ 59.101580][ T6813] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.107019][ T6813] ext4_map_blocks+0x4cb/0x1640 [ 59.111968][ T6813] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.117150][ T6813] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.122803][ T6813] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.128781][ T6813] ? prandom_u32_state+0xe/0x170 [ 59.133710][ T6813] ? __brelse+0x84/0xa0 [ 59.137863][ T6813] ? __ext4_new_inode+0x144/0x57c0 [ 59.142976][ T6813] ext4_getblk+0xad/0x520 [ 59.147305][ T6813] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.153015][ T6813] ? ext4_free_inode+0x17e0/0x17e0 [ 59.158115][ T6813] ext4_bread+0x7c/0x380 [ 59.162335][ T6813] ? ext4_getblk+0x520/0x520 [ 59.166900][ T6813] ? dqget+0xff0/0xff0 [ 59.170950][ T6813] ext4_append+0x153/0x360 [ 59.175450][ T6813] ext4_mkdir+0x5e0/0xdf0 [ 59.179767][ T6813] ? ext4_rmdir+0xde0/0xde0 [ 59.184266][ T6813] ? security_inode_permission+0xc4/0xf0 [ 59.189877][ T6813] vfs_mkdir+0x419/0x690 [ 59.194114][ T6813] do_mkdirat+0x21e/0x280 [ 59.198423][ T6813] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.203273][ T6813] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.209245][ T6813] ? do_syscall_64+0x21/0x7d0 [ 59.213907][ T6813] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.219873][ T6813] do_syscall_64+0xf6/0x7d0 [ 59.224356][ T6813] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.230224][ T6813] RIP: 0033:0x45bed7 [ 59.234094][ T6813] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 59.253687][ T6813] RSP: 002b:00007fff79d76728 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 59.262080][ T6813] RAX: ffffffffffffffda RBX: 000000000000e688 RCX: 000000000045bed7 2020/06/16 06:19:15 building call list... [ 59.270028][ T6813] RDX: 00007fff79d76773 RSI: 00000000000001ff RDI: 00007fff79d76770 [ 59.277977][ T6813] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 59.285925][ T6813] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 59.293874][ T6813] R13: 00007fff79d76760 R14: 000000000000e679 R15: 00007fff79d76770 [ 59.593280][ T229] tipc: TX() has been purged, node left! executing program [ 60.974701][ T6840] can: request_module (can-proto-0) failed. [ 61.537608][ T6840] can: request_module (can-proto-0) failed. [ 61.548784][ T6840] can: request_module (can-proto-0) failed.