[ 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... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about Sy[ 38.107289][ T6730] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6730 stem Runlevel Ch[ 38.118213][ T6730] caller is ext4_mb_new_blocks+0x301/0x1620 anges. [ 38.125894][ T6730] CPU: 1 PID: 6730 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 38.134684][ T6730] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.144787][ T6730] Call Trace: [ 38.148099][ T6730] dump_stack+0x1f0/0x31e [ 38.152516][ T6730] check_preemption_disabled+0x1c9/0x240 [ 38.158127][ T6730] ext4_mb_new_blocks+0x301/0x1620 [ 38.163224][ T6730] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 38.168489][ T6730] ? lock_acquire+0x169/0x480 [ 38.173252][ T6730] ? ext4_map_blocks+0x7ea/0x19e0 [ 38.178266][ T6730] ext4_map_blocks+0x8c1/0x19e0 [ 38.183722][ T6730] ? rcu_read_lock_sched_held+0x2f/0xa0 [ 38.189257][ T6730] ? __brelse+0x54/0x90 [ 38.193410][ T6730] ext4_getblk+0xa4/0x460 [ 38.197719][ T6730] ext4_bread+0x48/0x330 [ 38.201941][ T6730] ext4_append+0x153/0x2d0 [ 38.206332][ T6730] ext4_mkdir+0x75f/0x14c0 [ 38.210755][ T6730] vfs_mkdir+0x42a/0x620 [ 38.214972][ T6730] do_mkdirat+0x1b9/0x310 [ 38.219276][ T6730] do_syscall_64+0xf3/0x1b0 [ 38.223753][ T6730] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 38.229632][ T6730] RIP: 0033:0x7f7855835687 [ 38.234015][ T6730] Code: Bad RIP value. [ 38.238052][ T6730] RSP: 002b:00007ffe6dce7e98 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 38.246529][ T6730] RAX: ffffffffffffffda RBX: 000055c3e8d6f985 RCX: 00007f7855835687 [ 38.254476][ T6730] RDX: 00007ffe6dce7d60 RSI: 00000000000001ed RDI: 000055c3e8d6f985 [ 38.262437][ T6730] RBP: 00007f7855835680 R08: 0000000000000100 R09: 0000000000000000 [ 38.270381][ T6730] R10: 000055c3e8d6f980 R11: 0000000000000246 R12: 00000000000001ed [ 38.278322][ T6730] R13: 00007ffe6dce8020 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.20' (ECDSA) to the list of known hosts. 2020/06/10 03:52:29 fuzzer started 2020/06/10 03:52:30 connecting to host at 10.128.0.26:38909 2020/06/10 03:52:30 checking machine... 2020/06/10 03:52:30 checking revisions... 2020/06/10 03:52:30 testing simple program... syzkaller login: [ 43.438351][ T6798] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6798 [ 43.447565][ T6798] caller is ext4_mb_new_blocks+0x301/0x1620 [ 43.453536][ T6798] CPU: 1 PID: 6798 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 43.461401][ T6798] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.471474][ T6798] Call Trace: [ 43.474744][ T6798] dump_stack+0x1f0/0x31e [ 43.479049][ T6798] check_preemption_disabled+0x1c9/0x240 [ 43.484656][ T6798] ext4_mb_new_blocks+0x301/0x1620 [ 43.489748][ T6798] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 43.495015][ T6798] ? lock_acquire+0x169/0x480 [ 43.499664][ T6798] ? ext4_map_blocks+0x7ea/0x19e0 [ 43.504716][ T6798] ext4_map_blocks+0x8c1/0x19e0 [ 43.509542][ T6798] ? rcu_read_lock_sched_held+0x2f/0xa0 [ 43.515186][ T6798] ? __brelse+0x54/0x90 [ 43.519342][ T6798] ext4_getblk+0xa4/0x460 [ 43.523660][ T6798] ext4_bread+0x48/0x330 [ 43.527883][ T6798] ext4_append+0x153/0x2d0 [ 43.532278][ T6798] ext4_mkdir+0x75f/0x14c0 [ 43.536680][ T6798] vfs_mkdir+0x42a/0x620 [ 43.540908][ T6798] do_mkdirat+0x1b9/0x310 [ 43.545210][ T6798] do_syscall_64+0xf3/0x1b0 [ 43.549692][ T6798] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 43.555556][ T6798] RIP: 0033:0x4b02a0 [ 43.559418][ T6798] Code: Bad RIP value. [ 43.563453][ T6798] RSP: 002b:000000c0003654b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 43.571855][ T6798] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 43.579803][ T6798] RDX: 00000000000001c0 RSI: 000000c00009c7e0 RDI: ffffffffffffff9c [ 43.587746][ T6798] RBP: 000000c000365510 R08: 0000000000000000 R09: 0000000000000000 [ 43.595689][ T6798] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 [ 43.603720][ T6798] R13: 0000000000000040 R14: 000000000000003f R15: 0000000000000100 [ 43.625106][ T6816] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6816 [ 43.634746][ T6816] caller is ext4_mb_new_blocks+0x301/0x1620 [ 43.640724][ T6816] CPU: 0 PID: 6816 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 43.649436][ T6816] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.659503][ T6816] Call Trace: [ 43.662773][ T6816] dump_stack+0x1f0/0x31e [ 43.667103][ T6816] check_preemption_disabled+0x1c9/0x240 [ 43.672725][ T6816] ext4_mb_new_blocks+0x301/0x1620 [ 43.678098][ T6816] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 43.683382][ T6816] ? lock_acquire+0x169/0x480 [ 43.688055][ T6816] ? ext4_map_blocks+0x7ea/0x19e0 [ 43.693077][ T6816] ext4_map_blocks+0x8c1/0x19e0 [ 43.697925][ T6816] ? rcu_read_lock_sched_held+0x2f/0xa0 [ 43.703447][ T6816] ? __brelse+0x54/0x90 [ 43.707595][ T6816] ext4_getblk+0xa4/0x460 [ 43.711918][ T6816] ext4_bread+0x48/0x330 [ 43.716156][ T6816] ext4_append+0x153/0x2d0 [ 43.720565][ T6816] ext4_mkdir+0x75f/0x14c0 [ 43.724970][ T6816] vfs_mkdir+0x42a/0x620 [ 43.729191][ T6816] do_mkdirat+0x1b9/0x310 [ 43.733509][ T6816] do_syscall_64+0xf3/0x1b0 [ 43.737986][ T6816] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 43.743859][ T6816] RIP: 0033:0x45bee7 [ 43.747730][ T6816] Code: Bad RIP value. [ 43.751779][ T6816] RSP: 002b:00007fff3ab5a6c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 43.760170][ T6816] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 43.768299][ T6816] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007fff3ab5a8a0 [ 43.776255][ T6816] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002500 [ 43.784208][ T6816] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 43.792163][ T6816] R13: 00007fff3ab5a8a0 R14: 8421084210842109 R15: 00007fff3ab5a8ac [ 43.860676][ T6817] IPVS: ftp: loaded support on port[0] = 21 [ 43.894720][ T6817] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6817 [ 43.904317][ T6817] caller is ext4_mb_new_blocks+0x301/0x1620 [ 43.910283][ T6817] CPU: 1 PID: 6817 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 43.918500][ T6817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.928530][ T6817] Call Trace: [ 43.931793][ T6817] dump_stack+0x1f0/0x31e [ 43.936098][ T6817] check_preemption_disabled+0x1c9/0x240 [ 43.941709][ T6817] ext4_mb_new_blocks+0x301/0x1620 [ 43.946800][ T6817] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 43.952064][ T6817] ? lock_acquire+0x169/0x480 [ 43.956714][ T6817] ? ext4_map_blocks+0x7ea/0x19e0 [ 43.961717][ T6817] ext4_map_blocks+0x8c1/0x19e0 [ 43.966544][ T6817] ? rcu_read_lock_sched_held+0x2f/0xa0 [ 43.972062][ T6817] ? __brelse+0x54/0x90 [ 43.976193][ T6817] ext4_getblk+0xa4/0x460 [ 43.980496][ T6817] ext4_bread+0x48/0x330 [ 43.984731][ T6817] ext4_append+0x153/0x2d0 [ 43.989122][ T6817] ext4_mkdir+0x75f/0x14c0 [ 43.993573][ T6817] vfs_mkdir+0x42a/0x620 [ 43.997793][ T6817] do_mkdirat+0x1b9/0x310 [ 44.002098][ T6817] do_syscall_64+0xf3/0x1b0 [ 44.006577][ T6817] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 44.012453][ T6817] RIP: 0033:0x45bee7 [ 44.016313][ T6817] Code: Bad RIP value. [ 44.020348][ T6817] RSP: 002b:00007fff3ab5a5b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 44.028725][ T6817] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 44.036673][ T6817] RDX: 00007fff3ab5a603 RSI: 00000000000001ff RDI: 00007fff3ab5a600 [ 44.044615][ T6817] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 44.052559][ T6817] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 44.060503][ T6817] R13: 00007fff3ab5a5f0 R14: 0000000000000000 R15: 00007fff3ab5a600 [ 44.105111][ T6817] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6817 [ 44.114689][ T6817] caller is ext4_mb_new_blocks+0x301/0x1620 [ 44.120698][ T6817] CPU: 1 PID: 6817 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 44.128931][ T6817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.138975][ T6817] Call Trace: [ 44.142244][ T6817] dump_stack+0x1f0/0x31e [ 44.146552][ T6817] check_preemption_disabled+0x1c9/0x240 [ 44.154850][ T6817] ext4_mb_new_blocks+0x301/0x1620 [ 44.159958][ T6817] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 44.165236][ T6817] ? lock_acquire+0x169/0x480 [ 44.169930][ T6817] ? ext4_map_blocks+0x7ea/0x19e0 [ 44.174940][ T6817] ext4_map_blocks+0x8c1/0x19e0 [ 44.179776][ T6817] ? rcu_read_lock_sched_held+0x2f/0xa0 [ 44.185314][ T6817] ? __brelse+0x54/0x90 [ 44.189457][ T6817] ext4_getblk+0xa4/0x460 [ 44.193781][ T6817] ext4_bread+0x48/0x330 [ 44.198004][ T6817] ext4_append+0x153/0x2d0 [ 44.202396][ T6817] ext4_mkdir+0x75f/0x14c0 [ 44.206798][ T6817] vfs_mkdir+0x42a/0x620 [ 44.211016][ T6817] do_mkdirat+0x1b9/0x310 [ 44.215423][ T6817] do_syscall_64+0xf3/0x1b0 [ 44.219929][ T6817] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 44.225796][ T6817] RIP: 0033:0x45bee7 [ 44.229657][ T6817] Code: Bad RIP value. [ 44.233689][ T6817] RSP: 002b:00007fff3ab5a5b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 44.242087][ T6817] RAX: ffffffffffffffda RBX: 000000000000ac3f RCX: 000000000045bee7 2020/06/10 03:52:31 building call list... [ 44.250029][ T6817] RDX: 00007fff3ab5a603 RSI: 00000000000001ff RDI: 00007fff3ab5a600 [ 44.257974][ T6817] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 44.265918][ T6817] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 44.273860][ T6817] R13: 00007fff3ab5a5f0 R14: 000000000000ac3c R15: 00007fff3ab5a600 [ 44.495374][ T2771] tipc: TX() has been purged, node left! [ 45.476798][ T6801] can: request_module (can-proto-0) failed. [ 46.148279][ T1156] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1156 [ 46.157466][ T1156] caller is ext4_mb_new_blocks+0x301/0x1620 [ 46.163365][ T1156] CPU: 1 PID: 1156 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 46.171234][ T1156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.181270][ T1156] Call Trace: [ 46.184631][ T1156] dump_stack+0x1f0/0x31e [ 46.188941][ T1156] check_preemption_disabled+0x1c9/0x240 executing program [ 46.194556][ T1156] ext4_mb_new_blocks+0x301/0x1620 [ 46.199651][ T1156] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 46.204929][ T1156] ? lock_acquire+0x169/0x480 [ 46.209577][ T1156] ? ext4_map_blocks+0x7ea/0x19e0 [ 46.214593][ T1156] ext4_map_blocks+0x8c1/0x19e0 [ 46.219437][ T1156] ext4_writepages+0x150c/0x3750 [ 46.224371][ T1156] ? __lock_acquire+0x116c/0x2c30 [ 46.229414][ T1156] ? ext4_readpage+0x140/0x140 [ 46.234152][ T1156] do_writepages+0xda/0x1f0 [ 46.238642][ T1156] __filemap_fdatawrite_range+0x2a5/0x350 [ 46.244353][ T1156] collapse_file+0x2ebc/0x39a0 [ 46.249111][ T1156] khugepaged_scan_mm_slot+0x6353/0x69a0 [ 46.254805][ T1156] ? lock_acquire+0x169/0x480 [ 46.259474][ T1156] ? khugepaged_do_scan+0x1ac/0x590 [ 46.264677][ T1156] khugepaged_do_scan+0x22f/0x590 [ 46.269702][ T1156] khugepaged+0xa5/0x7b0 [ 46.273921][ T1156] ? init_wait_entry+0xd0/0xd0 [ 46.278662][ T1156] kthread+0x353/0x380 [ 46.282727][ T1156] ? start_stop_khugepaged+0x3b0/0x3b0 [ 46.288158][ T1156] ? kthread_blkcg+0xd0/0xd0 [ 46.292818][ T1156] ret_from_fork+0x24/0x30 [ 46.355277][ T1156] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1156 [ 46.364389][ T1156] caller is ext4_mb_new_blocks+0x301/0x1620 [ 46.370275][ T1156] CPU: 1 PID: 1156 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 46.378218][ T1156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.388257][ T1156] Call Trace: [ 46.391527][ T1156] dump_stack+0x1f0/0x31e [ 46.395837][ T1156] check_preemption_disabled+0x1c9/0x240 [ 46.401460][ T1156] ext4_mb_new_blocks+0x301/0x1620 [ 46.406553][ T1156] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 46.411820][ T1156] ? lock_acquire+0x169/0x480 [ 46.416473][ T1156] ? ext4_map_blocks+0x7ea/0x19e0 [ 46.421490][ T1156] ext4_map_blocks+0x8c1/0x19e0 [ 46.426326][ T1156] ext4_writepages+0x150c/0x3750 [ 46.431263][ T1156] ? ext4_readpage+0x140/0x140 [ 46.436021][ T1156] do_writepages+0xda/0x1f0 [ 46.440517][ T1156] __filemap_fdatawrite_range+0x2a5/0x350 [ 46.446215][ T1156] collapse_file+0x2ebc/0x39a0 [ 46.452702][ T1156] khugepaged_scan_mm_slot+0x6353/0x69a0 [ 46.458330][ T1156] ? lock_acquire+0x169/0x480 [ 46.462978][ T1156] ? khugepaged_do_scan+0x1ac/0x590 [ 46.468169][ T1156] khugepaged_do_scan+0x22f/0x590 [ 46.473167][ T1156] khugepaged+0xa5/0x7b0 [ 46.477384][ T1156] ? init_wait_entry+0xd0/0xd0 [ 46.482134][ T1156] kthread+0x353/0x380 [ 46.486175][ T1156] ? start_stop_khugepaged+0x3b0/0x3b0 [ 46.491604][ T1156] ? kthread_blkcg+0xd0/0xd0 [ 46.496168][ T1156] ret_from_fork+0x24/0x30 [ 46.540264][ T1156] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1156 [ 46.549435][ T1156] caller is ext4_mb_new_blocks+0x301/0x1620 [ 46.555392][ T1156] CPU: 1 PID: 1156 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 46.563353][ T1156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.573420][ T1156] Call Trace: [ 46.576889][ T1156] dump_stack+0x1f0/0x31e [ 46.581231][ T1156] check_preemption_disabled+0x1c9/0x240 [ 46.586878][ T1156] ext4_mb_new_blocks+0x301/0x1620 [ 46.591984][ T1156] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 46.597280][ T1156] ? lock_acquire+0x169/0x480 [ 46.599966][ T6801] can: request_module (can-proto-0) failed. [ 46.602039][ T1156] ? ext4_map_blocks+0x7ea/0x19e0 [ 46.612953][ T1156] ext4_map_blocks+0x8c1/0x19e0 [ 46.617831][ T1156] ext4_writepages+0x150c/0x3750 [ 46.620629][ T6801] can: request_module (can-proto-0) failed. [ 46.622810][ T1156] ? ext4_readpage+0x140/0x140 [ 46.633409][ T1156] do_writepages+0xda/0x1f0 [ 46.637928][ T1156] __filemap_fdatawrite_range+0x2a5/0x350 [ 46.643660][ T1156] collapse_file+0x2ebc/0x39a0 [ 46.648450][ T1156] khugepaged_scan_mm_slot+0x6353/0x69a0 [ 46.654128][ T1156] ? lock_acquire+0x169/0x480 [ 46.658804][ T1156] ? khugepaged_do_scan+0x1ac/0x590 [ 46.664015][ T1156] khugepaged_do_scan+0x22f/0x590 [ 46.669044][ T1156] khugepaged+0xa5/0x7b0 [ 46.673291][ T1156] ? init_wait_entry+0xd0/0xd0 [ 46.678054][ T1156] kthread+0x353/0x380 [ 46.682124][ T1156] ? start_stop_khugepaged+0x3b0/0x3b0 [ 46.687576][ T1156] ? kthread_blkcg+0xd0/0xd0 [ 46.692168][ T1156] ret_from_fork+0x24/0x30