[ 57.487075][ T7] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:0/7 [ 57.496150][ T7] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.502380][ T7] CPU: 1 PID: 7 Comm: kworker/u4:0 Not tainted 5.7.0-syzkaller #0 [ 57.510532][ T7] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.520731][ T7] Workqueue: writeback wb_workfn (flush-8:0) [ 57.526699][ T7] Call Trace: [ 57.529984][ T7] dump_stack+0x188/0x20d [ 57.534306][ T7] debug_smp_processor_id.cold+0x88/0x9b [ 57.539939][ T7] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.545050][ T7] ? __kmalloc+0x62f/0x7a0 [ 57.549479][ T7] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.555487][ T7] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.561207][ T7] ext4_ext_map_blocks+0x2044/0x3410 [ 57.566477][ T7] ? ext4_ext_release+0x10/0x10 [ 57.571422][ T7] ? __down_timeout+0x2d0/0x2d0 [ 57.577564][ T7] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.583025][ T7] ? debug_smp_processor_id+0x2f/0x185 [ 57.588472][ T7] ext4_map_blocks+0x4cb/0x1640 [ 57.593339][ T7] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.598606][ T7] ? debug_smp_processor_id+0x2f/0x185 [ 57.604066][ T7] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.609610][ T7] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.615584][ T7] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 57.621040][ T7] ext4_writepages+0x1ab7/0x3400 [ 57.626013][ T7] ? __ext4_mark_inode_dirty+0x950/0x950 [ 57.631660][ T7] ? __lock_acquire+0x2224/0x48a0 [ 57.636714][ T7] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.646153][ T7] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.652139][ T7] ? __ext4_mark_inode_dirty+0x950/0x950 [ 57.657866][ T7] ? do_writepages+0xfa/0x2a0 [ 57.662529][ T7] do_writepages+0xfa/0x2a0 [ 57.667016][ T7] ? page_writeback_cpu_online+0x10/0x10 [ 57.672812][ T7] ? debug_smp_processor_id+0x2f/0x185 [ 57.678281][ T7] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.683978][ T7] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.690027][ T7] ? lock_downgrade+0x840/0x840 [ 57.694878][ T7] __writeback_single_inode+0x12a/0x1410 [ 57.700492][ T7] ? _raw_spin_unlock+0x24/0x40 [ 57.705359][ T7] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 57.711328][ T7] writeback_sb_inodes+0x515/0xdd0 [ 57.717124][ T7] ? __writeback_single_inode+0x1410/0x1410 [ 57.723107][ T7] __writeback_inodes_wb+0xc3/0x250 [ 57.728287][ T7] wb_writeback+0x910/0xd90 [ 57.732856][ T7] ? print_usage_bug+0x240/0x240 [ 57.737773][ T7] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 57.744786][ T7] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 57.750672][ T7] ? cpumask_next+0x3c/0x40 [ 57.755172][ T7] ? get_nr_dirty_inodes+0xd6/0x130 [ 57.760352][ T7] wb_workfn+0xadf/0x10d0 [ 57.764749][ T7] ? inode_wait_for_writeback+0x30/0x30 [ 57.770908][ T7] ? debug_smp_processor_id+0x2f/0x185 [ 57.776378][ T7] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.781906][ T7] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.787882][ T7] process_one_work+0x965/0x16a0 [ 57.793020][ T7] ? lock_release+0x800/0x800 [ 57.798037][ T7] ? pwq_dec_nr_in_flight+0x310/0x310 [ 57.803401][ T7] ? rwlock_bug.part.0+0x90/0x90 [ 57.808463][ T7] worker_thread+0x96/0xe10 [ 57.812977][ T7] ? process_one_work+0x16a0/0x16a0 [ 57.818166][ T7] kthread+0x388/0x470 [ 57.822290][ T7] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.828005][ T7] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.833724][ T7] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.1.58' (ECDSA) to the list of known hosts. 2020/06/16 04:03:18 fuzzer started 2020/06/16 04:03:18 connecting to host at 10.128.0.26:38091 2020/06/16 04:03:18 checking machine... 2020/06/16 04:03:18 checking revisions... 2020/06/16 04:03:18 testing simple program... [ 60.445228][ T6789] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6789 [ 60.454514][ T6789] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.460678][ T6789] CPU: 1 PID: 6789 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 60.468565][ T6789] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.478892][ T6789] Call Trace: [ 60.482369][ T6789] dump_stack+0x188/0x20d [ 60.486686][ T6789] debug_smp_processor_id.cold+0x88/0x9b [ 60.492422][ T6789] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.497521][ T6789] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.502989][ T6789] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.508700][ T6789] ext4_ext_map_blocks+0x2044/0x3410 [ 60.514016][ T6789] ? ext4_ext_release+0x10/0x10 [ 60.518877][ T6789] ? __down_timeout+0x2d0/0x2d0 [ 60.523715][ T6789] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.529286][ T6789] ext4_map_blocks+0x4cb/0x1640 [ 60.534138][ T6789] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.539404][ T6789] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.544943][ T6789] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.551205][ T6789] ? prandom_u32_state+0xe/0x170 [ 60.556256][ T6789] ? __brelse+0x84/0xa0 [ 60.560417][ T6789] ? __ext4_new_inode+0x144/0x57c0 [ 60.569933][ T6789] ext4_getblk+0xad/0x520 [ 60.574418][ T6789] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.580354][ T6789] ? ext4_free_inode+0x17e0/0x17e0 [ 60.585461][ T6789] ext4_bread+0x7c/0x380 [ 60.589691][ T6789] ? ext4_getblk+0x520/0x520 [ 60.594894][ T6789] ? dqget+0xff0/0xff0 [ 60.598966][ T6789] ext4_append+0x153/0x360 [ 60.603384][ T6789] ext4_mkdir+0x5e0/0xdf0 [ 60.607788][ T6789] ? ext4_rmdir+0xde0/0xde0 [ 60.612293][ T6789] ? security_inode_permission+0xc4/0xf0 [ 60.617940][ T6789] vfs_mkdir+0x419/0x690 [ 60.622230][ T6789] do_mkdirat+0x21e/0x280 [ 60.626555][ T6789] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.631403][ T6789] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.637368][ T6789] ? do_syscall_64+0x21/0x7d0 [ 60.642030][ T6789] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.648000][ T6789] do_syscall_64+0xf6/0x7d0 [ 60.652791][ T6789] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.658698][ T6789] RIP: 0033:0x4b02a0 [ 60.662778][ T6789] 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 [ 60.682637][ T6789] RSP: 002b:000000c0000db4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 60.691577][ T6789] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 60.699575][ T6789] RDX: 00000000000001c0 RSI: 000000c000026520 RDI: ffffffffffffff9c [ 60.707738][ T6789] RBP: 000000c0000db510 R08: 0000000000000000 R09: 0000000000000000 [ 60.715885][ T6789] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 60.723923][ T6789] R13: 000000000000002a R14: 0000000000000029 R15: 0000000000000100 [ 60.749832][ T6802] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6802 [ 60.761087][ T6802] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.767230][ T6802] CPU: 1 PID: 6802 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.775611][ T6802] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.785689][ T6802] Call Trace: [ 60.788974][ T6802] dump_stack+0x188/0x20d [ 60.793536][ T6802] debug_smp_processor_id.cold+0x88/0x9b [ 60.799169][ T6802] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.804279][ T6802] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.809744][ T6802] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.815466][ T6802] ext4_ext_map_blocks+0x2044/0x3410 [ 60.820750][ T6802] ? ext4_ext_release+0x10/0x10 [ 60.825594][ T6802] ? __down_timeout+0x2d0/0x2d0 [ 60.830895][ T6802] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.836452][ T6802] ext4_map_blocks+0x4cb/0x1640 [ 60.841383][ T6802] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.846564][ T6802] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.852115][ T6802] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.858342][ T6802] ? prandom_u32_state+0xe/0x170 [ 60.863276][ T6802] ? __brelse+0x84/0xa0 [ 60.867505][ T6802] ? __ext4_new_inode+0x144/0x57c0 [ 60.872655][ T6802] ext4_getblk+0xad/0x520 [ 60.876982][ T6802] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.882860][ T6802] ? ext4_free_inode+0x17e0/0x17e0 [ 60.888062][ T6802] ext4_bread+0x7c/0x380 [ 60.892286][ T6802] ? ext4_getblk+0x520/0x520 [ 60.896880][ T6802] ? dqget+0xff0/0xff0 [ 60.900933][ T6802] ext4_append+0x153/0x360 [ 60.905350][ T6802] ext4_mkdir+0x5e0/0xdf0 [ 60.909789][ T6802] ? ext4_rmdir+0xde0/0xde0 [ 60.914417][ T6802] ? security_inode_permission+0xc4/0xf0 [ 60.920061][ T6802] vfs_mkdir+0x419/0x690 [ 60.924328][ T6802] do_mkdirat+0x21e/0x280 [ 60.928640][ T6802] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.933481][ T6802] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.939444][ T6802] ? do_syscall_64+0x21/0x7d0 [ 60.944111][ T6802] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.950095][ T6802] do_syscall_64+0xf6/0x7d0 [ 60.954580][ T6802] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.960454][ T6802] RIP: 0033:0x45bed7 [ 60.964345][ 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 [ 60.983949][ T6802] RSP: 002b:00007fffe6521438 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 60.992358][ T6802] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bed7 [ 61.000314][ T6802] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007fffe6521610 [ 61.008285][ T6802] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003000 [ 61.016242][ T6802] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 61.024222][ T6802] R13: 00007fffe6521610 R14: 8421084210842109 R15: 00007fffe652161c [ 61.108387][ T6803] IPVS: ftp: loaded support on port[0] = 21 [ 61.146098][ T6803] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6803 [ 61.155564][ T6803] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.162056][ T6803] CPU: 0 PID: 6803 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.170922][ T6803] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.180976][ T6803] Call Trace: [ 61.184255][ T6803] dump_stack+0x188/0x20d [ 61.188585][ T6803] debug_smp_processor_id.cold+0x88/0x9b [ 61.194210][ T6803] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.199314][ T6803] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.204765][ T6803] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.210485][ T6803] ext4_ext_map_blocks+0x2044/0x3410 [ 61.215869][ T6803] ? ext4_ext_release+0x10/0x10 [ 61.220745][ T6803] ? __down_timeout+0x2d0/0x2d0 [ 61.225733][ T6803] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.231192][ T6803] ext4_map_blocks+0x4cb/0x1640 [ 61.236034][ T6803] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.241221][ T6803] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.246921][ T6803] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.252878][ T6803] ? prandom_u32_state+0xe/0x170 [ 61.257886][ T6803] ? __brelse+0x84/0xa0 [ 61.262107][ T6803] ? __ext4_new_inode+0x144/0x57c0 [ 61.267546][ T6803] ext4_getblk+0xad/0x520 [ 61.272033][ T6803] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.277768][ T6803] ? ext4_free_inode+0x17e0/0x17e0 [ 61.282861][ T6803] ext4_bread+0x7c/0x380 [ 61.287114][ T6803] ? ext4_getblk+0x520/0x520 [ 61.291686][ T6803] ? dqget+0xff0/0xff0 [ 61.295739][ T6803] ext4_append+0x153/0x360 [ 61.300148][ T6803] ext4_mkdir+0x5e0/0xdf0 [ 61.304471][ T6803] ? ext4_rmdir+0xde0/0xde0 [ 61.308959][ T6803] ? security_inode_permission+0xc4/0xf0 [ 61.314577][ T6803] vfs_mkdir+0x419/0x690 [ 61.318829][ T6803] do_mkdirat+0x21e/0x280 [ 61.323171][ T6803] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.328040][ T6803] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.334016][ T6803] ? do_syscall_64+0x21/0x7d0 [ 61.338679][ T6803] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.346207][ T6803] do_syscall_64+0xf6/0x7d0 [ 61.350693][ T6803] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.356573][ T6803] RIP: 0033:0x45bed7 [ 61.360453][ T6803] 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 [ 61.380049][ T6803] RSP: 002b:00007fffe6521328 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 61.388457][ T6803] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bed7 [ 61.396415][ T6803] RDX: 00007fffe6521373 RSI: 00000000000001ff RDI: 00007fffe6521370 [ 61.404486][ T6803] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 61.412453][ T6803] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185c0 [ 61.420419][ T6803] R13: 00007fffe6521360 R14: 0000000000000000 R15: 00007fffe6521370 [ 61.475831][ T6803] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6803 [ 61.485351][ T6803] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.491251][ T6803] CPU: 1 PID: 6803 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.500056][ T6803] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.510112][ T6803] Call Trace: [ 61.513437][ T6803] dump_stack+0x188/0x20d [ 61.517779][ T6803] debug_smp_processor_id.cold+0x88/0x9b [ 61.523420][ T6803] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.528645][ T6803] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.534105][ T6803] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.539922][ T6803] ext4_ext_map_blocks+0x2044/0x3410 [ 61.545212][ T6803] ? ext4_ext_release+0x10/0x10 [ 61.550224][ T6803] ? __down_timeout+0x2d0/0x2d0 [ 61.555071][ T6803] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.560538][ T6803] ext4_map_blocks+0x4cb/0x1640 [ 61.565382][ T6803] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.570567][ T6803] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.576105][ T6803] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.582063][ T6803] ? prandom_u32_state+0xe/0x170 [ 61.586987][ T6803] ? __brelse+0x84/0xa0 [ 61.591123][ T6803] ? __ext4_new_inode+0x144/0x57c0 [ 61.596217][ T6803] ext4_getblk+0xad/0x520 [ 61.600534][ T6803] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.606254][ T6803] ? ext4_free_inode+0x17e0/0x17e0 [ 61.611356][ T6803] ext4_bread+0x7c/0x380 [ 61.615762][ T6803] ? ext4_getblk+0x520/0x520 [ 61.620337][ T6803] ? dqget+0xff0/0xff0 [ 61.624386][ T6803] ext4_append+0x153/0x360 [ 61.628795][ T6803] ext4_mkdir+0x5e0/0xdf0 [ 61.633117][ T6803] ? ext4_rmdir+0xde0/0xde0 [ 61.637616][ T6803] ? security_inode_permission+0xc4/0xf0 [ 61.643342][ T6803] vfs_mkdir+0x419/0x690 [ 61.647586][ T6803] do_mkdirat+0x21e/0x280 [ 61.651895][ T6803] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.656732][ T6803] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.662691][ T6803] ? do_syscall_64+0x21/0x7d0 [ 61.667383][ T6803] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.673352][ T6803] do_syscall_64+0xf6/0x7d0 [ 61.677848][ T6803] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.683716][ T6803] RIP: 0033:0x45bed7 [ 61.687612][ T6803] 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 [ 61.707293][ T6803] RSP: 002b:00007fffe6521328 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 61.715687][ T6803] RAX: ffffffffffffffda RBX: 000000000000f019 RCX: 000000000045bed7 2020/06/16 04:03:20 building call list... [ 61.723653][ T6803] RDX: 00007fffe6521373 RSI: 00000000000001ff RDI: 00007fffe6521370 [ 61.731619][ T6803] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 61.742630][ T6803] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 61.751804][ T6803] R13: 00007fffe6521360 R14: 000000000000f008 R15: 00007fffe6521370 [ 62.034991][ T206] tipc: TX() has been purged, node left! executing program [ 63.487290][ T6789] can: request_module (can-proto-0) failed. [ 64.019029][ T6789] can: request_module (can-proto-0) failed. [ 64.030947][ T6789] can: request_module (can-proto-0) failed.