Warning: Permanently added '10.128.0.194' (ECDSA) to the list of known hosts. 2020/05/07 09:45:00 fuzzer started 2020/05/07 09:45:00 connecting to host at 10.128.0.26:32797 2020/05/07 09:45:00 checking machine... 2020/05/07 09:45:00 checking revisions... 2020/05/07 09:45:00 testing simple program... [ 54.681746][ T7038] IPVS: ftp: loaded support on port[0] = 21 2020/05/07 09:45:00 building call list... [ 55.068050][ T56] tipc: TX() has been purged, node left! [ 56.277570][ T7065] can: request_module (can-proto-0) failed. executing program [ 58.302578][ T7065] can: request_module (can-proto-0) failed. [ 58.313716][ T7065] can: request_module (can-proto-0) failed. [ 58.786464][ T7065] ================================================================== [ 58.794658][ T7065] BUG: KASAN: null-ptr-deref in x25_disconnect+0x253/0x370 [ 58.801829][ T7065] Write of size 4 at addr 00000000000000d8 by task syz-fuzzer/7065 [ 58.809725][ T7065] [ 58.812034][ T7065] CPU: 1 PID: 7065 Comm: syz-fuzzer Not tainted 5.7.0-rc2-syzkaller #0 [ 58.820239][ T7065] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.830269][ T7065] Call Trace: [ 58.833537][ T7065] dump_stack+0x188/0x20d [ 58.837846][ T7065] ? x25_disconnect+0x253/0x370 [ 58.842670][ T7065] ? __sock_release+0x280/0x280 [ 58.847493][ T7065] __kasan_report.cold+0x5/0x4d [ 58.852332][ T7065] ? rcu_read_lock_held+0x1/0xb0 [ 58.857261][ T7065] ? x25_disconnect+0x253/0x370 [ 58.862106][ T7065] ? x25_disconnect+0x253/0x370 [ 58.866935][ T7065] kasan_report+0x33/0x50 [ 58.871241][ T7065] check_memory_region+0x141/0x190 [ 58.876326][ T7065] x25_disconnect+0x253/0x370 [ 58.880978][ T7065] x25_release+0x345/0x420 [ 58.885369][ T7065] __sock_release+0xcd/0x280 [ 58.889935][ T7065] sock_close+0x18/0x20 [ 58.894063][ T7065] __fput+0x33e/0x880 [ 58.898025][ T7065] task_work_run+0xf4/0x1b0 [ 58.902507][ T7065] exit_to_usermode_loop+0x2fa/0x360 [ 58.907768][ T7065] do_syscall_64+0x6b1/0x7d0 [ 58.912334][ T7065] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.918198][ T7065] RIP: 0033:0x4afb40 [ 58.922066][ T7065] 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 [ 58.941653][ T7065] RSP: 002b:000000c0001ef478 EFLAGS: 00000212 ORIG_RAX: 0000000000000003 [ 58.950048][ T7065] RAX: 0000000000000000 RBX: 000000c00002e500 RCX: 00000000004afb40 [ 58.957994][ T7065] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 58.965939][ T7065] RBP: 000000c0001ef4b8 R08: 0000000000000000 R09: 0000000000000000 [ 58.973882][ T7065] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 58.981838][ T7065] R13: 0000000000000160 R14: 000000000000015f R15: 0000000000000200 [ 58.989797][ T7065] ================================================================== [ 58.997828][ T7065] Disabling lock debugging due to kernel taint [ 59.004004][ T7065] Kernel panic - not syncing: panic_on_warn set ... [ 59.010584][ T7065] CPU: 1 PID: 7065 Comm: syz-fuzzer Tainted: G B 5.7.0-rc2-syzkaller #0 [ 59.020194][ T7065] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.030231][ T7065] Call Trace: [ 59.033494][ T7065] dump_stack+0x188/0x20d [ 59.037796][ T7065] ? __sock_release+0x280/0x280 [ 59.042616][ T7065] panic+0x2e3/0x75c [ 59.046482][ T7065] ? add_taint.cold+0x16/0x16 [ 59.051143][ T7065] ? x25_disconnect+0x253/0x370 [ 59.055967][ T7065] ? trace_hardirqs_on+0x55/0x220 [ 59.060970][ T7065] ? x25_disconnect+0x253/0x370 [ 59.065789][ T7065] ? __sock_release+0x280/0x280 [ 59.070608][ T7065] end_report+0x4d/0x53 [ 59.074734][ T7065] __kasan_report.cold+0xd/0x4d [ 59.079556][ T7065] ? rcu_read_lock_held+0x1/0xb0 [ 59.084461][ T7065] ? x25_disconnect+0x253/0x370 [ 59.089281][ T7065] ? x25_disconnect+0x253/0x370 [ 59.094099][ T7065] kasan_report+0x33/0x50 [ 59.098412][ T7065] check_memory_region+0x141/0x190 [ 59.103492][ T7065] x25_disconnect+0x253/0x370 [ 59.108140][ T7065] x25_release+0x345/0x420 [ 59.112544][ T7065] __sock_release+0xcd/0x280 [ 59.117117][ T7065] sock_close+0x18/0x20 [ 59.121243][ T7065] __fput+0x33e/0x880 [ 59.125194][ T7065] task_work_run+0xf4/0x1b0 [ 59.129669][ T7065] exit_to_usermode_loop+0x2fa/0x360 [ 59.134935][ T7065] do_syscall_64+0x6b1/0x7d0 [ 59.139509][ T7065] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.145374][ T7065] RIP: 0033:0x4afb40 [ 59.149242][ T7065] 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 [ 59.168813][ T7065] RSP: 002b:000000c0001ef478 EFLAGS: 00000212 ORIG_RAX: 0000000000000003 [ 59.177214][ T7065] RAX: 0000000000000000 RBX: 000000c00002e500 RCX: 00000000004afb40 [ 59.185169][ T7065] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 59.193110][ T7065] RBP: 000000c0001ef4b8 R08: 0000000000000000 R09: 0000000000000000 [ 59.201051][ T7065] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 59.209004][ T7065] R13: 0000000000000160 R14: 000000000000015f R15: 0000000000000200 [ 59.218290][ T7065] Kernel Offset: disabled [ 59.222601][ T7065] Rebooting in 86400 seconds..