[ 56.478504][ T6740] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:6/6740 [ 56.487736][ T6740] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.493975][ T6740] CPU: 1 PID: 6740 Comm: kworker/u4:6 Not tainted 5.7.0-next-20200602-syzkaller #0 [ 56.503417][ T6740] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.513465][ T6740] Workqueue: writeback wb_workfn (flush-8:0) [ 56.519419][ T6740] Call Trace: [ 56.522692][ T6740] dump_stack+0x18f/0x20d [ 56.527002][ T6740] check_preemption_disabled+0x20d/0x220 [ 56.532626][ T6740] ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.537858][ T6740] ? ext4_find_extent+0x81a/0xad0 [ 56.542880][ T6740] ? ext4_ext_search_right+0x2ca/0xb20 [ 56.548328][ T6740] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 56.554040][ T6740] ext4_ext_map_blocks+0x201b/0x33e0 [ 56.559307][ T6740] ? ext4_ext_release+0x10/0x10 [ 56.564143][ T6740] ? down_write_killable+0x170/0x170 [ 56.569404][ T6740] ? ext4_es_lookup_extent+0x41d/0xd10 [ 56.574840][ T6740] ext4_map_blocks+0x4cb/0x1640 [ 56.579671][ T6740] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 56.584848][ T6740] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.590367][ T6740] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.596332][ T6740] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 56.601868][ T6740] ext4_writepages+0x1ab5/0x3400 [ 56.606812][ T6740] ? __ext4_mark_inode_dirty+0x940/0x940 [ 56.612417][ T6740] ? __lock_acquire+0x2224/0x48b0 [ 56.617423][ T6740] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.623378][ T6740] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.629347][ T6740] ? __ext4_mark_inode_dirty+0x940/0x940 [ 56.634965][ T6740] ? do_writepages+0xfa/0x2a0 [ 56.639628][ T6740] do_writepages+0xfa/0x2a0 [ 56.644130][ T6740] ? page_writeback_cpu_online+0x10/0x10 [ 56.649761][ T6740] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.655290][ T6740] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.661294][ T6740] ? lock_downgrade+0x840/0x840 [ 56.666127][ T6740] __writeback_single_inode+0x12a/0x13d0 [ 56.671760][ T6740] ? _raw_spin_unlock+0x24/0x40 [ 56.676599][ T6740] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 56.682569][ T6740] writeback_sb_inodes+0x515/0xdc0 [ 56.687674][ T6740] ? __writeback_single_inode+0x13d0/0x13d0 [ 56.693571][ T6740] __writeback_inodes_wb+0xc3/0x250 [ 56.698757][ T6740] wb_writeback+0x8db/0xd50 [ 56.703255][ T6740] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 56.709566][ T6740] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 56.715439][ T6740] ? cpumask_next+0x3c/0x40 [ 56.719936][ T6740] ? get_nr_dirty_inodes+0xd6/0x130 [ 56.725132][ T6740] wb_workfn+0xab3/0x1090 [ 56.729481][ T6740] ? inode_wait_for_writeback+0x30/0x30 [ 56.735025][ T6740] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.740559][ T6740] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.746531][ T6740] process_one_work+0x965/0x1690 [ 56.751450][ T6740] ? lock_release+0x800/0x800 [ 56.756104][ T6740] ? pwq_dec_nr_in_flight+0x310/0x310 [ 56.761462][ T6740] ? rwlock_bug.part.0+0x90/0x90 [ 56.766377][ T6740] worker_thread+0x96/0xe10 [ 56.770890][ T6740] ? process_one_work+0x1690/0x1690 [ 56.776065][ T6740] kthread+0x3b5/0x4a0 [ 56.780119][ T6740] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.785810][ T6740] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.791508][ T6740] ret_from_fork+0x1f/0x30 Warning: Permanently added '10.128.0.249' (ECDSA) to the list of known hosts. 2020/06/02 11:54:54 fuzzer started 2020/06/02 11:54:54 connecting to host at 10.128.0.26:43783 2020/06/02 11:54:54 checking machine... 2020/06/02 11:54:54 checking revisions... 2020/06/02 11:54:54 testing simple program... [ 59.362385][ T6787] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6787 [ 59.371498][ T6787] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.377448][ T6787] CPU: 0 PID: 6787 Comm: syz-fuzzer Not tainted 5.7.0-next-20200602-syzkaller #0 [ 59.386640][ T6787] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.396681][ T6787] Call Trace: [ 59.399966][ T6787] dump_stack+0x18f/0x20d [ 59.404272][ T6787] check_preemption_disabled+0x20d/0x220 [ 59.409896][ T6787] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.415002][ T6787] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.420438][ T6787] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.426151][ T6787] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.431431][ T6787] ? ext4_ext_release+0x10/0x10 [ 59.436268][ T6787] ? down_write_killable+0x170/0x170 [ 59.441541][ T6787] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.446996][ T6787] ext4_map_blocks+0x4cb/0x1640 [ 59.451850][ T6787] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.457021][ T6787] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.462543][ T6787] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.468522][ T6787] ? prandom_u32_state+0xe/0x170 [ 59.473442][ T6787] ? __brelse+0x84/0xa0 [ 59.477589][ T6787] ? __ext4_new_inode+0x144/0x55e0 [ 59.482692][ T6787] ext4_getblk+0xad/0x520 [ 59.487008][ T6787] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.492713][ T6787] ? ext4_free_inode+0x1700/0x1700 [ 59.497811][ T6787] ext4_bread+0x7c/0x380 [ 59.502031][ T6787] ? ext4_getblk+0x520/0x520 [ 59.506607][ T6787] ? dquot_get_next_dqblk+0x180/0x180 [ 59.511965][ T6787] ext4_append+0x153/0x360 [ 59.517333][ T6787] ext4_mkdir+0x5e0/0xdf0 [ 59.521645][ T6787] ? ext4_rmdir+0xde0/0xde0 [ 59.526400][ T6787] ? security_inode_permission+0xc4/0xf0 [ 59.532014][ T6787] vfs_mkdir+0x419/0x690 [ 59.536247][ T6787] do_mkdirat+0x21e/0x280 [ 59.540574][ T6787] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.545417][ T6787] ? do_syscall_64+0x1c/0xe0 [ 59.549986][ T6787] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.555941][ T6787] do_syscall_64+0x60/0xe0 [ 59.560351][ T6787] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.566223][ T6787] RIP: 0033:0x4b02a0 [ 59.570089][ T6787] Code: Bad RIP value. [ 59.574141][ T6787] RSP: 002b:000000c0000fd4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 59.582537][ T6787] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 59.590498][ T6787] RDX: 00000000000001c0 RSI: 000000c0000d0320 RDI: ffffffffffffff9c [ 59.598466][ T6787] RBP: 000000c0000fd510 R08: 0000000000000000 R09: 0000000000000000 [ 59.606413][ T6787] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 59.614371][ T6787] R13: 000000000000001a R14: 0000000000000019 R15: 0000000000000100 [ 59.630742][ T6801] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6801 [ 59.640226][ T6801] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.646852][ T6801] CPU: 0 PID: 6801 Comm: syz-executor.0 Not tainted 5.7.0-next-20200602-syzkaller #0 [ 59.656290][ T6801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.666325][ T6801] Call Trace: [ 59.669604][ T6801] dump_stack+0x18f/0x20d [ 59.673929][ T6801] check_preemption_disabled+0x20d/0x220 [ 59.679564][ T6801] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.684668][ T6801] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.690105][ T6801] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.695829][ T6801] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.701096][ T6801] ? ext4_ext_release+0x10/0x10 [ 59.705934][ T6801] ? down_write_killable+0x170/0x170 [ 59.711194][ T6801] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.716663][ T6801] ext4_map_blocks+0x4cb/0x1640 [ 59.721515][ T6801] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.726718][ T6801] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.732245][ T6801] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.738215][ T6801] ? prandom_u32_state+0xe/0x170 [ 59.743145][ T6801] ? __brelse+0x84/0xa0 [ 59.747278][ T6801] ? __ext4_new_inode+0x144/0x55e0 [ 59.752371][ T6801] ext4_getblk+0xad/0x520 [ 59.756678][ T6801] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.762377][ T6801] ? ext4_free_inode+0x1700/0x1700 [ 59.767483][ T6801] ext4_bread+0x7c/0x380 [ 59.771703][ T6801] ? ext4_getblk+0x520/0x520 [ 59.776364][ T6801] ? dquot_get_next_dqblk+0x180/0x180 [ 59.781733][ T6801] ext4_append+0x153/0x360 [ 59.786129][ T6801] ext4_mkdir+0x5e0/0xdf0 [ 59.790444][ T6801] ? ext4_rmdir+0xde0/0xde0 [ 59.794926][ T6801] ? security_inode_permission+0xc4/0xf0 [ 59.800537][ T6801] vfs_mkdir+0x419/0x690 [ 59.804762][ T6801] do_mkdirat+0x21e/0x280 [ 59.809089][ T6801] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.813930][ T6801] ? do_syscall_64+0x1c/0xe0 [ 59.818497][ T6801] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.824466][ T6801] do_syscall_64+0x60/0xe0 [ 59.828862][ T6801] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.834725][ T6801] RIP: 0033:0x45bee7 [ 59.838589][ T6801] Code: Bad RIP value. [ 59.842640][ T6801] RSP: 002b:00007ffc32158e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 59.851022][ T6801] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 59.858969][ T6801] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffc32159020 [ 59.866929][ T6801] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002880 [ 59.874888][ T6801] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 59.882837][ T6801] R13: 00007ffc32159020 R14: 8421084210842109 R15: 00007ffc3215902c [ 59.965275][ T6802] IPVS: ftp: loaded support on port[0] = 21 [ 59.999703][ T6802] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6802 [ 60.009204][ T6802] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.015099][ T6802] CPU: 1 PID: 6802 Comm: syz-executor.0 Not tainted 5.7.0-next-20200602-syzkaller #0 [ 60.024528][ T6802] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.034619][ T6802] Call Trace: [ 60.037896][ T6802] dump_stack+0x18f/0x20d [ 60.042208][ T6802] check_preemption_disabled+0x20d/0x220 [ 60.047823][ T6802] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.052963][ T6802] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.058400][ T6802] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.064099][ T6802] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.069392][ T6802] ? ext4_ext_release+0x10/0x10 [ 60.074239][ T6802] ? down_write_killable+0x170/0x170 [ 60.079510][ T6802] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.084948][ T6802] ext4_map_blocks+0x4cb/0x1640 [ 60.089790][ T6802] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.094973][ T6802] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.100506][ T6802] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.106466][ T6802] ? prandom_u32_state+0xe/0x170 [ 60.111391][ T6802] ? __brelse+0x84/0xa0 [ 60.115534][ T6802] ? __ext4_new_inode+0x144/0x55e0 [ 60.120635][ T6802] ext4_getblk+0xad/0x520 [ 60.124952][ T6802] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.130662][ T6802] ? ext4_free_inode+0x1700/0x1700 [ 60.135753][ T6802] ext4_bread+0x7c/0x380 [ 60.139970][ T6802] ? ext4_getblk+0x520/0x520 [ 60.144536][ T6802] ? dquot_get_next_dqblk+0x180/0x180 [ 60.150070][ T6802] ext4_append+0x153/0x360 [ 60.154476][ T6802] ext4_mkdir+0x5e0/0xdf0 [ 60.158787][ T6802] ? ext4_rmdir+0xde0/0xde0 [ 60.163265][ T6802] ? security_inode_permission+0xc4/0xf0 [ 60.168887][ T6802] vfs_mkdir+0x419/0x690 [ 60.173118][ T6802] do_mkdirat+0x21e/0x280 [ 60.177443][ T6802] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.182267][ T6802] ? do_syscall_64+0x1c/0xe0 [ 60.186921][ T6802] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.192882][ T6802] do_syscall_64+0x60/0xe0 [ 60.197276][ T6802] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.203141][ T6802] RIP: 0033:0x45bee7 [ 60.207004][ T6802] Code: Bad RIP value. [ 60.211057][ T6802] RSP: 002b:00007ffc32158d38 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 60.219439][ T6802] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 60.227390][ T6802] RDX: 00007ffc32158d83 RSI: 00000000000001ff RDI: 00007ffc32158d80 [ 60.235335][ T6802] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 60.243285][ T6802] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 60.251264][ T6802] R13: 00007ffc32158d70 R14: 0000000000000000 R15: 00007ffc32158d80 [ 60.308111][ T6802] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6802 [ 60.317562][ T6802] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.323463][ T6802] CPU: 0 PID: 6802 Comm: syz-executor.0 Not tainted 5.7.0-next-20200602-syzkaller #0 [ 60.332905][ T6802] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.342957][ T6802] Call Trace: [ 60.346254][ T6802] dump_stack+0x18f/0x20d [ 60.350594][ T6802] check_preemption_disabled+0x20d/0x220 [ 60.356250][ T6802] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.361366][ T6802] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.366814][ T6802] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.372620][ T6802] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.377889][ T6802] ? ext4_ext_release+0x10/0x10 [ 60.383275][ T6802] ? down_write_killable+0x170/0x170 [ 60.388642][ T6802] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.394086][ T6802] ext4_map_blocks+0x4cb/0x1640 [ 60.398940][ T6802] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.404135][ T6802] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.409682][ T6802] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.415661][ T6802] ? prandom_u32_state+0xe/0x170 [ 60.420589][ T6802] ? __brelse+0x84/0xa0 [ 60.424729][ T6802] ? __ext4_new_inode+0x144/0x55e0 [ 60.429819][ T6802] ext4_getblk+0xad/0x520 [ 60.434126][ T6802] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.439837][ T6802] ? ext4_free_inode+0x1700/0x1700 [ 60.444926][ T6802] ext4_bread+0x7c/0x380 [ 60.449171][ T6802] ? ext4_getblk+0x520/0x520 [ 60.454262][ T6802] ? dquot_get_next_dqblk+0x180/0x180 [ 60.459611][ T6802] ext4_append+0x153/0x360 [ 60.464006][ T6802] ext4_mkdir+0x5e0/0xdf0 [ 60.468318][ T6802] ? ext4_rmdir+0xde0/0xde0 [ 60.472799][ T6802] ? security_inode_permission+0xc4/0xf0 [ 60.478445][ T6802] vfs_mkdir+0x419/0x690 [ 60.482678][ T6802] do_mkdirat+0x21e/0x280 [ 60.487018][ T6802] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.491858][ T6802] ? do_syscall_64+0x1c/0xe0 [ 60.496426][ T6802] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.502393][ T6802] do_syscall_64+0x60/0xe0 [ 60.506787][ T6802] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.512670][ T6802] RIP: 0033:0x45bee7 [ 60.516537][ T6802] Code: Bad RIP value. [ 60.520582][ T6802] RSP: 002b:00007ffc32158d38 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 60.528996][ T6802] RAX: ffffffffffffffda RBX: 000000000000eb8b RCX: 000000000045bee7 [ 60.536952][ T6802] RDX: 00007ffc32158d83 RSI: 00000000000001ff RDI: 00007ffc32158d80 [ 60.545161][ T6802] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 2020/06/02 11:54:56 building call list... [ 60.553124][ T6802] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 60.561076][ T6802] R13: 00007ffc32158d70 R14: 000000000000eb7c R15: 00007ffc32158d80 [ 60.806931][ T7] tipc: TX() has been purged, node left! executing program [ 62.412839][ T6788] can: request_module (can-proto-0) failed. [ 62.821400][ T6788] can: request_module (can-proto-0) failed. [ 62.832630][ T6788] can: request_module (can-proto-0) failed.