Starting OpenBSD Secure Shell server... Starting Permit User Sessions... [ OK ] Started Regular background program processing daemon. [ OK ] Started Daily apt upgrade and clean activities. [ OK ] Reached target Timers. [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Found device /dev/ttyS0. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ 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 Upda[ 37.515846][ T6762] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6762 te UTMP about Sy[ 37.526418][ T6762] caller is ext4_mb_new_blocks+0x301/0x1620 stem Runlevel Ch[ 37.534111][ T6762] CPU: 1 PID: 6762 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 37.543684][ T6762] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.553732][ T6762] Call Trace: [ 37.557002][ T6762] dump_stack+0x1e9/0x30e [ 37.561328][ T6762] check_preemption_disabled+0x1c9/0x240 [ 37.566954][ T6762] ext4_mb_new_blocks+0x301/0x1620 [ 37.572054][ T6762] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 37.577323][ T6762] ? lock_acquire+0x169/0x480 [ 37.581991][ T6762] ? ext4_map_blocks+0x7ea/0x19e0 [ 37.586998][ T6762] ext4_map_blocks+0x8c1/0x19e0 [ 37.591833][ T6762] ? rcu_read_lock_sched_held+0x2f/0xa0 [ 37.598531][ T6762] ? __brelse+0x54/0x90 [ 37.602672][ T6762] ext4_getblk+0xa4/0x460 [ 37.606979][ T6762] ext4_bread+0x48/0x330 [ 37.611374][ T6762] ext4_append+0x153/0x2d0 [ 37.615770][ T6762] ext4_mkdir+0x75f/0x14c0 [ 37.620175][ T6762] vfs_mkdir+0x42a/0x620 [ 37.624397][ T6762] do_mkdirat+0x1b9/0x310 [ 37.628721][ T6762] do_syscall_64+0xf3/0x1b0 [ 37.633237][ T6762] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 37.639109][ T6762] RIP: 0033:0x7fd727400687 [ 37.643498][ T6762] 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 [ 37.663227][ T6762] RSP: 002b:00007ffe4b3614f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 37.673890][ T6762] RAX: ffffffffffffffda RBX: 00005579a3b00985 RCX: 00007fd727400687 [ 37.681976][ T6762] RDX: 00007ffe4b3613c0 RSI: 00000000000001ed RDI: 00005579a3b00985 [ 37.689990][ T6762] RBP: 00007fd727400680 R08: 0000000000000100 R09: 0000000000000000 [ 37.697986][ T6762] R10: 00005579a3b00980 R11: 0000000000000246 R12: 00000000000001ed [ 37.706735][ T6762] R13: 00007ffe4b361680 R14: 0000000000000000 R15: 0000000000000000 anges. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.38' (ECDSA) to the list of known hosts. 2020/06/07 10:29:06 fuzzer started 2020/06/07 10:29:06 connecting to host at 10.128.0.26:38701 2020/06/07 10:29:06 checking machine... 2020/06/07 10:29:06 checking revisions... 2020/06/07 10:29:06 testing simple program... syzkaller login: [ 42.509166][ T6842] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6842 [ 42.518361][ T6842] caller is ext4_mb_new_blocks+0x301/0x1620 [ 42.524235][ T6842] CPU: 1 PID: 6842 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 42.532544][ T6842] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.543042][ T6842] Call Trace: [ 42.546334][ T6842] dump_stack+0x1e9/0x30e [ 42.550668][ T6842] check_preemption_disabled+0x1c9/0x240 [ 42.556554][ T6842] ext4_mb_new_blocks+0x301/0x1620 [ 42.561951][ T6842] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 42.575132][ T6842] ? lock_acquire+0x169/0x480 [ 42.585891][ T6842] ? ext4_map_blocks+0x7ea/0x19e0 [ 42.590907][ T6842] ext4_map_blocks+0x8c1/0x19e0 [ 42.595736][ T6842] ? rcu_read_lock_sched_held+0x2f/0xa0 [ 42.601262][ T6842] ? __brelse+0x54/0x90 [ 42.605403][ T6842] ext4_getblk+0xa4/0x460 [ 42.609729][ T6842] ext4_bread+0x48/0x330 [ 42.613970][ T6842] ext4_append+0x153/0x2d0 [ 42.618373][ T6842] ext4_mkdir+0x75f/0x14c0 [ 42.622777][ T6842] vfs_mkdir+0x42a/0x620 [ 42.627024][ T6842] do_mkdirat+0x1b9/0x310 [ 42.631339][ T6842] do_syscall_64+0xf3/0x1b0 [ 42.635817][ T6842] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 42.641681][ T6842] RIP: 0033:0x4b02a0 [ 42.645642][ T6842] 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 [ 42.666276][ T6842] RSP: 002b:000000c0000cf4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 42.674790][ T6842] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 42.682738][ T6842] RDX: 00000000000001c0 RSI: 000000c0000266e0 RDI: ffffffffffffff9c [ 42.690700][ T6842] RBP: 000000c0000cf510 R08: 0000000000000000 R09: 0000000000000000 [ 42.698655][ T6842] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 42.707230][ T6842] R13: 0000000000000038 R14: 0000000000000037 R15: 0000000000000100 [ 42.728961][ T6844] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6844 [ 42.738404][ T6844] caller is ext4_mb_new_blocks+0x301/0x1620 [ 42.744325][ T6844] CPU: 1 PID: 6844 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 42.752643][ T6844] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.763303][ T6844] Call Trace: [ 42.772339][ T6844] dump_stack+0x1e9/0x30e [ 42.776749][ T6844] check_preemption_disabled+0x1c9/0x240 [ 42.782509][ T6844] ext4_mb_new_blocks+0x301/0x1620 [ 42.787643][ T6844] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 42.792935][ T6844] ? lock_acquire+0x169/0x480 [ 42.797684][ T6844] ? ext4_map_blocks+0x7ea/0x19e0 [ 42.803133][ T6844] ext4_map_blocks+0x8c1/0x19e0 [ 42.807971][ T6844] ? rcu_read_lock_sched_held+0x2f/0xa0 [ 42.813495][ T6844] ? __brelse+0x54/0x90 [ 42.817623][ T6844] ext4_getblk+0xa4/0x460 [ 42.821926][ T6844] ext4_bread+0x48/0x330 [ 42.826149][ T6844] ext4_append+0x153/0x2d0 [ 42.830724][ T6844] ext4_mkdir+0x75f/0x14c0 [ 42.835128][ T6844] vfs_mkdir+0x42a/0x620 [ 42.839373][ T6844] do_mkdirat+0x1b9/0x310 [ 42.843679][ T6844] do_syscall_64+0xf3/0x1b0 [ 42.850936][ T6844] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 42.856814][ T6844] RIP: 0033:0x45bee7 [ 42.860681][ T6844] 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 [ 42.880252][ T6844] RSP: 002b:00007ffebe4abae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 42.888632][ T6844] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 42.896671][ T6844] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffebe4abcc0 [ 42.904622][ T6844] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002dc0 [ 42.912575][ T6844] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 42.920523][ T6844] R13: 00007ffebe4abcc0 R14: 8421084210842109 R15: 00007ffebe4abccc [ 42.991176][ T6846] IPVS: ftp: loaded support on port[0] = 21 [ 43.024345][ T6846] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6846 [ 43.033800][ T6846] caller is ext4_mb_new_blocks+0x301/0x1620 [ 43.040258][ T6846] CPU: 0 PID: 6846 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 43.048576][ T6846] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.058608][ T6846] Call Trace: [ 43.061885][ T6846] dump_stack+0x1e9/0x30e [ 43.066284][ T6846] check_preemption_disabled+0x1c9/0x240 [ 43.071889][ T6846] ext4_mb_new_blocks+0x301/0x1620 [ 43.077070][ T6846] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 43.083464][ T6846] ? lock_acquire+0x169/0x480 [ 43.088114][ T6846] ? ext4_map_blocks+0x7ea/0x19e0 [ 43.093140][ T6846] ext4_map_blocks+0x8c1/0x19e0 [ 43.097967][ T6846] ? rcu_read_lock_sched_held+0x2f/0xa0 [ 43.103580][ T6846] ? __brelse+0x54/0x90 [ 43.107709][ T6846] ext4_getblk+0xa4/0x460 [ 43.112030][ T6846] ext4_bread+0x48/0x330 [ 43.116248][ T6846] ext4_append+0x153/0x2d0 [ 43.121422][ T6846] ext4_mkdir+0x75f/0x14c0 [ 43.126505][ T6846] vfs_mkdir+0x42a/0x620 [ 43.130768][ T6846] do_mkdirat+0x1b9/0x310 [ 43.135082][ T6846] do_syscall_64+0xf3/0x1b0 [ 43.139568][ T6846] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 43.145436][ T6846] RIP: 0033:0x45bee7 [ 43.149308][ T6846] 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 [ 43.169579][ T6846] RSP: 002b:00007ffebe4ab9d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 43.177962][ T6846] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 43.186165][ T6846] RDX: 00007ffebe4aba23 RSI: 00000000000001ff RDI: 00007ffebe4aba20 [ 43.194110][ T6846] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 43.202066][ T6846] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 43.210541][ T6846] R13: 00007ffebe4aba10 R14: 0000000000000000 R15: 00007ffebe4aba20 [ 43.252254][ T6846] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6846 [ 43.261951][ T6846] caller is ext4_mb_new_blocks+0x301/0x1620 [ 43.267925][ T6846] CPU: 0 PID: 6846 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 43.276158][ T6846] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.286208][ T6846] Call Trace: [ 43.289505][ T6846] dump_stack+0x1e9/0x30e [ 43.293870][ T6846] check_preemption_disabled+0x1c9/0x240 [ 43.299511][ T6846] ext4_mb_new_blocks+0x301/0x1620 [ 43.304624][ T6846] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 43.310152][ T6846] ? lock_acquire+0x169/0x480 [ 43.314798][ T6846] ? ext4_map_blocks+0x7ea/0x19e0 [ 43.319802][ T6846] ext4_map_blocks+0x8c1/0x19e0 [ 43.324629][ T6846] ? rcu_read_lock_sched_held+0x2f/0xa0 [ 43.330146][ T6846] ? __brelse+0x54/0x90 [ 43.334275][ T6846] ext4_getblk+0xa4/0x460 [ 43.338584][ T6846] ext4_bread+0x48/0x330 [ 43.342814][ T6846] ext4_append+0x153/0x2d0 [ 43.347220][ T6846] ext4_mkdir+0x75f/0x14c0 [ 43.351630][ T6846] vfs_mkdir+0x42a/0x620 [ 43.355847][ T6846] do_mkdirat+0x1b9/0x310 [ 43.360252][ T6846] do_syscall_64+0xf3/0x1b0 [ 43.364742][ T6846] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 43.370605][ T6846] RIP: 0033:0x45bee7 [ 43.374471][ T6846] 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 [ 43.394048][ T6846] RSP: 002b:00007ffebe4ab9d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 43.402447][ T6846] RAX: ffffffffffffffda RBX: 000000000000a8ef RCX: 000000000045bee7 [ 43.410497][ T6846] RDX: 00007ffebe4aba23 RSI: 00000000000001ff RDI: 00007ffebe4aba20 [ 43.419395][ T6846] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 43.427364][ T6846] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 43.435320][ T6846] R13: 00007ffebe4aba10 R14: 000000000000a8e3 R15: 00007ffebe4aba20 2020/06/07 10:29:07 building call list... [ 43.715926][ T21] tipc: TX() has been purged, node left! [ 44.657587][ T6831] can: request_module (can-proto-0) failed. executing program [ 45.473066][ T6831] can: request_module (can-proto-0) failed. [ 45.484186][ T6831] can: request_module (can-proto-0) failed. [ 45.580594][ T1158] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1158 [ 45.589967][ T1158] caller is ext4_mb_new_blocks+0x301/0x1620 [ 45.595933][ T1158] CPU: 0 PID: 1158 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 45.603814][ T1158] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.613865][ T1158] Call Trace: [ 45.617193][ T1158] dump_stack+0x1e9/0x30e [ 45.621534][ T1158] check_preemption_disabled+0x1c9/0x240 [ 45.627180][ T1158] ext4_mb_new_blocks+0x301/0x1620 [ 45.632310][ T1158] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 45.637754][ T1158] ? lock_acquire+0x169/0x480 [ 45.642434][ T1158] ? ext4_map_blocks+0x7ea/0x19e0 [ 45.647476][ T1158] ext4_map_blocks+0x8c1/0x19e0 [ 45.652343][ T1158] ext4_writepages+0x150c/0x3750 [ 45.657293][ T1158] ? __lock_acquire+0x116c/0x2c30 [ 45.662344][ T1158] ? ext4_readpage+0x140/0x140 [ 45.667112][ T1158] do_writepages+0xda/0x1f0 [ 45.671625][ T1158] __filemap_fdatawrite_range+0x2a5/0x350 [ 45.677355][ T1158] collapse_file+0x2ebc/0x39a0 [ 45.682148][ T1158] khugepaged_scan_mm_slot+0x6353/0x69a0 [ 45.687823][ T1158] ? lock_acquire+0x169/0x480 [ 45.692504][ T1158] ? khugepaged_do_scan+0x1ac/0x590 [ 45.697725][ T1158] khugepaged_do_scan+0x22f/0x590 [ 45.702758][ T1158] khugepaged+0xa5/0x7b0 [ 45.707004][ T1158] ? init_wait_entry+0xd0/0xd0 [ 45.711772][ T1158] kthread+0x353/0x380 [ 45.715842][ T1158] ? start_stop_khugepaged+0x3b0/0x3b0 [ 45.723473][ T1158] ? kthread_blkcg+0xd0/0xd0 [ 45.723507][ T1158] ret_from_fork+0x24/0x30 [ 45.794175][ T1158] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1158 [ 45.803425][ T1158] caller is ext4_mb_new_blocks+0x301/0x1620 [ 45.809456][ T1158] CPU: 0 PID: 1158 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 45.817449][ T1158] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.827619][ T1158] Call Trace: [ 45.830912][ T1158] dump_stack+0x1e9/0x30e [ 45.835234][ T1158] check_preemption_disabled+0x1c9/0x240 [ 45.840844][ T1158] ext4_mb_new_blocks+0x301/0x1620 [ 45.845953][ T1158] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 45.851491][ T1158] ? lock_acquire+0x169/0x480 [ 45.856153][ T1158] ? ext4_map_blocks+0x7ea/0x19e0 [ 45.861155][ T1158] ext4_map_blocks+0x8c1/0x19e0 [ 45.866003][ T1158] ext4_writepages+0x150c/0x3750 [ 45.870958][ T1158] ? ext4_readpage+0x140/0x140 [ 45.875927][ T1158] do_writepages+0xda/0x1f0 [ 45.880429][ T1158] __filemap_fdatawrite_range+0x2a5/0x350 [ 45.886160][ T1158] collapse_file+0x2ebc/0x39a0 [ 45.890920][ T1158] khugepaged_scan_mm_slot+0x6353/0x69a0 [ 45.896611][ T1158] ? lock_acquire+0x169/0x480 [ 45.901286][ T1158] ? khugepaged_do_scan+0x1ac/0x590 [ 45.906484][ T1158] khugepaged_do_scan+0x22f/0x590 [ 45.911495][ T1158] khugepaged+0xa5/0x7b0 [ 45.915721][ T1158] ? init_wait_entry+0xd0/0xd0 [ 45.920472][ T1158] kthread+0x353/0x380 [ 45.924525][ T1158] ? start_stop_khugepaged+0x3b0/0x3b0 [ 45.929963][ T1158] ? kthread_blkcg+0xd0/0xd0 [ 45.934710][ T1158] ret_from_fork+0x24/0x30 [ 45.971958][ T1158] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1158 [ 45.981195][ T1158] caller is ext4_mb_new_blocks+0x301/0x1620 [ 45.987171][ T1158] CPU: 0 PID: 1158 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 45.995076][ T1158] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.005122][ T1158] Call Trace: [ 46.008413][ T1158] dump_stack+0x1e9/0x30e [ 46.012717][ T1158] check_preemption_disabled+0x1c9/0x240 [ 46.018330][ T1158] ext4_mb_new_blocks+0x301/0x1620 [ 46.023700][ T1158] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 46.028983][ T1158] ? lock_acquire+0x169/0x480 [ 46.033652][ T1158] ? ext4_map_blocks+0x7ea/0x19e0 [ 46.039091][ T1158] ext4_map_blocks+0x8c1/0x19e0 [ 46.045365][ T1158] ext4_writepages+0x150c/0x3750 [ 46.050325][ T1158] ? ext4_readpage+0x140/0x140 [ 46.055161][ T1158] do_writepages+0xda/0x1f0 [ 46.059652][ T1158] __filemap_fdatawrite_range+0x2a5/0x350 [ 46.065362][ T1158] collapse_file+0x2ebc/0x39a0 [ 46.070113][ T1158] khugepaged_scan_mm_slot+0x6353/0x69a0 [ 46.075755][ T1158] ? lock_acquire+0x169/0x480 [ 46.080413][ T1158] ? khugepaged_do_scan+0x1ac/0x590 [ 46.085598][ T1158] khugepaged_do_scan+0x22f/0x590 [ 46.090601][ T1158] khugepaged+0xa5/0x7b0 [ 46.094825][ T1158] ? init_wait_entry+0xd0/0xd0 [ 46.099570][ T1158] kthread+0x353/0x380 [ 46.103615][ T1158] ? start_stop_khugepaged+0x3b0/0x3b0 [ 46.109173][ T1158] ? kthread_blkcg+0xd0/0xd0 [ 46.113843][ T1158] ret_from_fork+0x24/0x30