[ 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. Starting Load/Save RF Kill Switch Status... [ 54.975675][ T6725] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6725 [ 54.985249][ T6725] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 54.991139][ T6725] CPU: 0 PID: 6725 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 54.999371][ T6725] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.009423][ T6725] Call Trace: [ 55.012716][ T6725] dump_stack+0x188/0x20d [ 55.017045][ T6725] debug_smp_processor_id.cold+0x88/0x9b [ 55.022680][ T6725] ext4_mb_new_blocks+0xa77/0x3b30 [ 55.027792][ T6725] ? ext4_ext_search_right+0x2ca/0xb20 [ 55.033227][ T6725] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 55.038952][ T6725] ext4_ext_map_blocks+0x2044/0x3410 [ 55.044296][ T6725] ? ext4_ext_release+0x10/0x10 [ 55.049162][ T6725] ? __down_timeout+0x2d0/0x2d0 [ 55.053995][ T6725] ? ext4_es_lookup_extent+0x41d/0xd30 [ 55.059605][ T6725] ext4_map_blocks+0x4cb/0x1640 [ 55.064447][ T6725] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 55.069629][ T6725] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.075159][ T6725] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.081118][ T6725] ? prandom_u32_state+0xe/0x170 [ 55.086038][ T6725] ? __brelse+0x84/0xa0 [ 55.090172][ T6725] ? __ext4_new_inode+0x144/0x57c0 [ 55.095281][ T6725] ext4_getblk+0xad/0x520 [ 55.099607][ T6725] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 55.105704][ T6725] ? ext4_free_inode+0x17e0/0x17e0 [ 55.110797][ T6725] ext4_bread+0x7c/0x380 [ 55.115021][ T6725] ? ext4_getblk+0x520/0x520 [ 55.119591][ T6725] ? dqget+0xff0/0xff0 [ 55.123713][ T6725] ext4_append+0x153/0x360 [ 55.128227][ T6725] ext4_mkdir+0x5e0/0xdf0 [ 55.132680][ T6725] ? ext4_rmdir+0xde0/0xde0 [ 55.137290][ T6725] ? security_inode_permission+0xc4/0xf0 [ 55.142907][ T6725] vfs_mkdir+0x419/0x690 [ 55.147138][ T6725] do_mkdirat+0x21e/0x280 [ 55.151454][ T6725] ? __ia32_sys_mknod+0xb0/0xb0 [ 55.156381][ T6725] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 55.162357][ T6725] ? do_syscall_64+0x21/0x7d0 [ 55.167020][ T6725] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 55.172981][ T6725] do_syscall_64+0xf6/0x7d0 [ 55.177467][ T6725] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 55.183338][ T6725] RIP: 0033:0x7f529537d687 [ 55.187840][ T6725] 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 [ 55.207432][ T6725] RSP: 002b:00007ffe3135bd08 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 55.215889][ T6725] RAX: ffffffffffffffda RBX: 0000555996ef7985 RCX: 00007f529537d687 [ 55.223844][ T6725] RDX: 00007ffe3135bbd0 RSI: 00000000000001ed RDI: 0000555996ef7985 [ 55.231814][ T6725] RBP: 00007f529537d680 R08: 0000000000000100 R09: 0000000000000000 [ 55.239768][ T6725] R10: 0000555996ef7980 R11: 0000000000000246 R12: 00000000000001ed [ 55.247719][ T6725] R13: 00007ffe3135be90 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.44' (ECDSA) to the list of known hosts. syzkaller login: [ 59.792802][ T217] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:4/217 [ 59.802530][ T217] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.808526][ T217] CPU: 1 PID: 217 Comm: kworker/u4:4 Not tainted 5.7.0-syzkaller #0 [ 59.816705][ T217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.827581][ T217] Workqueue: writeback wb_workfn (flush-8:0) [ 59.834183][ T217] Call Trace: [ 59.837496][ T217] dump_stack+0x188/0x20d [ 59.841951][ T217] debug_smp_processor_id.cold+0x88/0x9b [ 59.848310][ T217] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.854354][ T217] ? __kmalloc+0x62f/0x7a0 [ 59.859524][ T217] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.865038][ T217] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.871538][ T217] ext4_ext_map_blocks+0x2044/0x3410 [ 59.877385][ T217] ? ext4_ext_release+0x10/0x10 [ 59.882276][ T217] ? __down_timeout+0x2d0/0x2d0 [ 59.887136][ T217] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.893656][ T217] ? debug_smp_processor_id+0x2f/0x185 [ 59.900381][ T217] ext4_map_blocks+0x4cb/0x1640 [ 59.906629][ T217] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.911935][ T217] ? debug_smp_processor_id+0x2f/0x185 [ 59.917529][ T217] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.923119][ T217] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.929478][ T217] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.935150][ T217] ext4_writepages+0x1ab7/0x3400 [ 59.940657][ T217] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.946566][ T217] ? __lock_acquire+0x2224/0x48a0 [ 59.951620][ T217] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.957640][ T217] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.963641][ T217] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.969287][ T217] ? do_writepages+0xfa/0x2a0 [ 59.974000][ T217] do_writepages+0xfa/0x2a0 [ 59.978521][ T217] ? page_writeback_cpu_online+0x10/0x10 [ 59.984166][ T217] ? debug_smp_processor_id+0x2f/0x185 2020/06/14 05:46:23 fuzzer started [ 59.989662][ T217] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.995243][ T217] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.001680][ T217] ? lock_downgrade+0x840/0x840 [ 60.007909][ T217] __writeback_single_inode+0x12a/0x1410 [ 60.013677][ T217] ? _raw_spin_unlock+0x24/0x40 [ 60.018550][ T217] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 60.024557][ T217] writeback_sb_inodes+0x515/0xdd0 [ 60.029710][ T217] ? __writeback_single_inode+0x1410/0x1410 [ 60.036199][ T217] __writeback_inodes_wb+0xc3/0x250 [ 60.041441][ T217] wb_writeback+0x910/0xd90 [ 60.045968][ T217] ? print_usage_bug+0x240/0x240 [ 60.050929][ T217] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 60.057270][ T217] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 60.063194][ T217] ? cpumask_next+0x3c/0x40 [ 60.067720][ T217] ? get_nr_dirty_inodes+0xd6/0x130 [ 60.072955][ T217] wb_workfn+0xadf/0x10d0 [ 60.077347][ T217] ? inode_wait_for_writeback+0x30/0x30 [ 60.082987][ T217] ? debug_smp_processor_id+0x2f/0x185 [ 60.088602][ T217] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.094167][ T217] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.100172][ T217] process_one_work+0x965/0x16a0 [ 60.105142][ T217] ? lock_release+0x800/0x800 [ 60.110069][ T217] ? pwq_dec_nr_in_flight+0x310/0x310 [ 60.115908][ T217] ? rwlock_bug.part.0+0x90/0x90 [ 60.120881][ T217] worker_thread+0x96/0xe10 [ 60.125421][ T217] ? process_one_work+0x16a0/0x16a0 [ 60.130654][ T217] kthread+0x388/0x470 [ 60.134750][ T217] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.141621][ T217] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.148874][ T217] ret_from_fork+0x24/0x30 2020/06/14 05:46:24 connecting to host at 10.128.0.26:36601 2020/06/14 05:46:24 checking machine... 2020/06/14 05:46:24 checking revisions... 2020/06/14 05:46:24 testing simple program... [ 60.500434][ T6787] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6787 [ 60.509557][ T6787] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.515520][ T6787] CPU: 0 PID: 6787 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 60.523405][ T6787] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.533541][ T6787] Call Trace: [ 60.536834][ T6787] dump_stack+0x188/0x20d [ 60.541149][ T6787] debug_smp_processor_id.cold+0x88/0x9b [ 60.546980][ T6787] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.552095][ T6787] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.557699][ T6787] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.563528][ T6787] ext4_ext_map_blocks+0x2044/0x3410 [ 60.568814][ T6787] ? ext4_ext_release+0x10/0x10 [ 60.573659][ T6787] ? __down_timeout+0x2d0/0x2d0 [ 60.578532][ T6787] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.583990][ T6787] ext4_map_blocks+0x4cb/0x1640 [ 60.588839][ T6787] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.594039][ T6787] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.599580][ T6787] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.605886][ T6787] ? prandom_u32_state+0xe/0x170 [ 60.610836][ T6787] ? __brelse+0x84/0xa0 [ 60.615027][ T6787] ? __ext4_new_inode+0x144/0x57c0 [ 60.620730][ T6787] ext4_getblk+0xad/0x520 [ 60.625070][ T6787] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.630774][ T6787] ? ext4_free_inode+0x17e0/0x17e0 [ 60.635957][ T6787] ext4_bread+0x7c/0x380 [ 60.640199][ T6787] ? ext4_getblk+0x520/0x520 [ 60.644768][ T6787] ? dqget+0xff0/0xff0 [ 60.651182][ T6787] ext4_append+0x153/0x360 [ 60.655613][ T6787] ext4_mkdir+0x5e0/0xdf0 [ 60.660448][ T6787] ? ext4_rmdir+0xde0/0xde0 [ 60.664937][ T6787] ? security_inode_permission+0xc4/0xf0 [ 60.670584][ T6787] vfs_mkdir+0x419/0x690 [ 60.674810][ T6787] do_mkdirat+0x21e/0x280 [ 60.679125][ T6787] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.683953][ T6787] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.689909][ T6787] ? do_syscall_64+0x21/0x7d0 [ 60.694589][ T6787] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.700547][ T6787] do_syscall_64+0xf6/0x7d0 [ 60.705031][ T6787] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.710913][ T6787] RIP: 0033:0x4b02a0 [ 60.714807][ T6787] 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 [ 60.734396][ T6787] RSP: 002b:000000c0000e74b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 60.742808][ T6787] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 60.750757][ T6787] RDX: 00000000000001c0 RSI: 000000c0000a8ea0 RDI: ffffffffffffff9c [ 60.758732][ T6787] RBP: 000000c0000e7510 R08: 0000000000000000 R09: 0000000000000000 [ 60.766697][ T6787] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 60.775082][ T6787] R13: 0000000000000076 R14: 0000000000000075 R15: 0000000000000100 [ 60.791209][ T6801] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6801 [ 60.800711][ T6801] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.806726][ T6801] CPU: 0 PID: 6801 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.815056][ T6801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.825185][ T6801] Call Trace: [ 60.828655][ T6801] dump_stack+0x188/0x20d [ 60.833072][ T6801] debug_smp_processor_id.cold+0x88/0x9b [ 60.838687][ T6801] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.843877][ T6801] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.849314][ T6801] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.855017][ T6801] ext4_ext_map_blocks+0x2044/0x3410 [ 60.860305][ T6801] ? ext4_ext_release+0x10/0x10 [ 60.865159][ T6801] ? __down_timeout+0x2d0/0x2d0 [ 60.870014][ T6801] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.875464][ T6801] ext4_map_blocks+0x4cb/0x1640 [ 60.880303][ T6801] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.885481][ T6801] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.891019][ T6801] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.896976][ T6801] ? prandom_u32_state+0xe/0x170 [ 60.902776][ T6801] ? __brelse+0x84/0xa0 [ 60.907030][ T6801] ? __ext4_new_inode+0x144/0x57c0 [ 60.912149][ T6801] ext4_getblk+0xad/0x520 [ 60.916460][ T6801] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.922162][ T6801] ? ext4_free_inode+0x17e0/0x17e0 [ 60.927257][ T6801] ext4_bread+0x7c/0x380 [ 60.931480][ T6801] ? ext4_getblk+0x520/0x520 [ 60.936086][ T6801] ? dqget+0xff0/0xff0 [ 60.940160][ T6801] ext4_append+0x153/0x360 [ 60.944560][ T6801] ext4_mkdir+0x5e0/0xdf0 [ 60.948871][ T6801] ? ext4_rmdir+0xde0/0xde0 [ 60.953356][ T6801] ? security_inode_permission+0xc4/0xf0 [ 60.958971][ T6801] vfs_mkdir+0x419/0x690 [ 60.963303][ T6801] do_mkdirat+0x21e/0x280 [ 60.967611][ T6801] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.972449][ T6801] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.980343][ T6801] ? do_syscall_64+0x21/0x7d0 [ 60.985006][ T6801] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.990965][ T6801] do_syscall_64+0xf6/0x7d0 [ 60.995452][ T6801] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.001423][ T6801] RIP: 0033:0x45bee7 [ 61.005294][ T6801] 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 [ 61.025031][ T6801] RSP: 002b:00007ffd54dea6b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 61.033490][ T6801] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 61.041900][ T6801] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffd54dea890 [ 61.049867][ T6801] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003600 [ 61.058168][ T6801] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 61.066147][ T6801] R13: 00007ffd54dea890 R14: 8421084210842109 R15: 00007ffd54dea89c [ 61.145822][ T6802] IPVS: ftp: loaded support on port[0] = 21 [ 61.182442][ T6802] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6802 [ 61.192133][ T6802] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.198082][ T6802] CPU: 1 PID: 6802 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.206300][ T6802] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.216347][ T6802] Call Trace: [ 61.219624][ T6802] dump_stack+0x188/0x20d [ 61.223941][ T6802] debug_smp_processor_id.cold+0x88/0x9b [ 61.229557][ T6802] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.235115][ T6802] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.240553][ T6802] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.246782][ T6802] ext4_ext_map_blocks+0x2044/0x3410 [ 61.252069][ T6802] ? ext4_ext_release+0x10/0x10 [ 61.256914][ T6802] ? __down_timeout+0x2d0/0x2d0 [ 61.261767][ T6802] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.267223][ T6802] ext4_map_blocks+0x4cb/0x1640 [ 61.272054][ T6802] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.277260][ T6802] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.282784][ T6802] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.288751][ T6802] ? prandom_u32_state+0xe/0x170 [ 61.293667][ T6802] ? __brelse+0x84/0xa0 [ 61.297802][ T6802] ? __ext4_new_inode+0x144/0x57c0 [ 61.302907][ T6802] ext4_getblk+0xad/0x520 [ 61.307218][ T6802] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.312917][ T6802] ? ext4_free_inode+0x17e0/0x17e0 [ 61.318353][ T6802] ext4_bread+0x7c/0x380 [ 61.322582][ T6802] ? ext4_getblk+0x520/0x520 [ 61.327245][ T6802] ? dqget+0xff0/0xff0 [ 61.331303][ T6802] ext4_append+0x153/0x360 [ 61.335750][ T6802] ext4_mkdir+0x5e0/0xdf0 [ 61.340058][ T6802] ? ext4_rmdir+0xde0/0xde0 [ 61.344549][ T6802] ? security_inode_permission+0xc4/0xf0 [ 61.350184][ T6802] vfs_mkdir+0x419/0x690 [ 61.354419][ T6802] do_mkdirat+0x21e/0x280 [ 61.358741][ T6802] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.363606][ T6802] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.369565][ T6802] ? do_syscall_64+0x21/0x7d0 [ 61.374221][ T6802] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.380188][ T6802] do_syscall_64+0xf6/0x7d0 [ 61.384671][ T6802] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.390551][ T6802] RIP: 0033:0x45bee7 [ 61.394441][ T6802] 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 [ 61.414724][ T6802] RSP: 002b:00007ffd54dea5a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 61.423107][ T6802] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 61.431053][ T6802] RDX: 00007ffd54dea5f3 RSI: 00000000000001ff RDI: 00007ffd54dea5f0 [ 61.439107][ T6802] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 61.447054][ T6802] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 61.455181][ T6802] R13: 00007ffd54dea5e0 R14: 0000000000000000 R15: 00007ffd54dea5f0 [ 61.513696][ T6802] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6802 [ 61.523151][ T6802] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.529047][ T6802] CPU: 0 PID: 6802 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.537282][ T6802] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.547326][ T6802] Call Trace: [ 61.550654][ T6802] dump_stack+0x188/0x20d [ 61.554993][ T6802] debug_smp_processor_id.cold+0x88/0x9b [ 61.560624][ T6802] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.565869][ T6802] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.571349][ T6802] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.577054][ T6802] ext4_ext_map_blocks+0x2044/0x3410 [ 61.582338][ T6802] ? ext4_ext_release+0x10/0x10 [ 61.587176][ T6802] ? __down_timeout+0x2d0/0x2d0 [ 61.592004][ T6802] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.597443][ T6802] ext4_map_blocks+0x4cb/0x1640 [ 61.602330][ T6802] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.607525][ T6802] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.613064][ T6802] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.619019][ T6802] ? prandom_u32_state+0xe/0x170 [ 61.623966][ T6802] ? __brelse+0x84/0xa0 [ 61.628113][ T6802] ? __ext4_new_inode+0x144/0x57c0 [ 61.633204][ T6802] ext4_getblk+0xad/0x520 [ 61.637511][ T6802] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.643222][ T6802] ? ext4_free_inode+0x17e0/0x17e0 [ 61.648308][ T6802] ext4_bread+0x7c/0x380 [ 61.652527][ T6802] ? ext4_getblk+0x520/0x520 [ 61.657104][ T6802] ? dqget+0xff0/0xff0 [ 61.661161][ T6802] ext4_append+0x153/0x360 [ 61.670765][ T6802] ext4_mkdir+0x5e0/0xdf0 [ 61.675074][ T6802] ? ext4_rmdir+0xde0/0xde0 [ 61.679556][ T6802] ? security_inode_permission+0xc4/0xf0 [ 61.685167][ T6802] vfs_mkdir+0x419/0x690 [ 61.689392][ T6802] do_mkdirat+0x21e/0x280 [ 61.693804][ T6802] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.698628][ T6802] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.704584][ T6802] ? do_syscall_64+0x21/0x7d0 [ 61.709234][ T6802] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.715191][ T6802] do_syscall_64+0xf6/0x7d0 [ 61.719671][ T6802] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.725537][ T6802] RIP: 0033:0x45bee7 [ 61.729410][ T6802] 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 [ 61.749076][ T6802] RSP: 002b:00007ffd54dea5a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 61.757481][ T6802] RAX: ffffffffffffffda RBX: 000000000000f044 RCX: 000000000045bee7 2020/06/14 05:46:25 building call list... [ 61.765631][ T6802] RDX: 00007ffd54dea5f3 RSI: 00000000000001ff RDI: 00007ffd54dea5f0 [ 61.773595][ T6802] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 61.781628][ T6802] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 61.789627][ T6802] R13: 00007ffd54dea5e0 R14: 000000000000f039 R15: 00007ffd54dea5f0 [ 62.111736][ T7] tipc: TX() has been purged, node left! executing program [ 63.597963][ T6798] can: request_module (can-proto-0) failed. [ 64.086820][ T6798] can: request_module (can-proto-0) failed. [ 64.098283][ T6798] can: request_module (can-proto-0) failed.