Warning: Permanently added '10.128.10.24' (ECDSA) to the list of known hosts. 2020/05/02 11:11:12 fuzzer started 2020/05/02 11:11:12 connecting to host at 10.128.0.26:44631 2020/05/02 11:11:12 checking machine... 2020/05/02 11:11:12 checking revisions... 2020/05/02 11:11:12 testing simple program... [ 55.800751][ T7035] IPVS: ftp: loaded support on port[0] = 21 2020/05/02 11:11:13 building call list... [ 56.194118][ T129] tipc: TX() has been purged, node left! [ 57.364425][ T7024] can: request_module (can-proto-0) failed. executing program [ 59.389316][ T7024] can: request_module (can-proto-0) failed. [ 59.400429][ T7024] can: request_module (can-proto-0) failed. [ 59.893898][ T7024] ================================================================== [ 59.902186][ T7024] BUG: KASAN: null-ptr-deref in x25_disconnect+0x253/0x370 [ 59.909459][ T7024] Write of size 4 at addr 00000000000000d8 by task syz-fuzzer/7024 [ 59.917349][ T7024] [ 59.919668][ T7024] CPU: 1 PID: 7024 Comm: syz-fuzzer Not tainted 5.7.0-rc2-syzkaller #0 [ 59.927887][ T7024] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.937915][ T7024] Call Trace: [ 59.941195][ T7024] dump_stack+0x188/0x20d [ 59.945513][ T7024] ? x25_disconnect+0x253/0x370 [ 59.950339][ T7024] ? __sock_release+0x280/0x280 [ 59.955167][ T7024] __kasan_report.cold+0x5/0x4d [ 59.960003][ T7024] ? rcu_read_lock_held+0x1/0xb0 [ 59.964916][ T7024] ? x25_disconnect+0x253/0x370 [ 59.969740][ T7024] ? x25_disconnect+0x253/0x370 [ 59.974563][ T7024] kasan_report+0x33/0x50 [ 59.978869][ T7024] check_memory_region+0x141/0x190 [ 59.983967][ T7024] x25_disconnect+0x253/0x370 [ 59.988634][ T7024] x25_release+0x345/0x420 [ 59.993036][ T7024] __sock_release+0xcd/0x280 [ 59.997633][ T7024] sock_close+0x18/0x20 [ 60.001768][ T7024] __fput+0x33e/0x880 [ 60.005747][ T7024] task_work_run+0xf4/0x1b0 [ 60.010233][ T7024] exit_to_usermode_loop+0x2fa/0x360 [ 60.015512][ T7024] do_syscall_64+0x6b1/0x7d0 [ 60.020083][ T7024] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.025964][ T7024] RIP: 0033:0x4afb40 [ 60.029948][ T7024] 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 [ 60.049542][ T7024] RSP: 002b:000000c0000794f8 EFLAGS: 00000216 ORIG_RAX: 0000000000000003 [ 60.057935][ T7024] RAX: 0000000000000000 RBX: 000000c00002c000 RCX: 00000000004afb40 [ 60.066414][ T7024] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 60.074360][ T7024] RBP: 000000c000079538 R08: 0000000000000000 R09: 0000000000000000 [ 60.082740][ T7024] R10: 0000000000000000 R11: 0000000000000216 R12: ffffffffffffffff [ 60.090860][ T7024] R13: 0000000000000161 R14: 0000000000000160 R15: 0000000000000200 [ 60.099262][ T7024] ================================================================== [ 60.107304][ T7024] Disabling lock debugging due to kernel taint [ 60.113483][ T7024] Kernel panic - not syncing: panic_on_warn set ... [ 60.120066][ T7024] CPU: 1 PID: 7024 Comm: syz-fuzzer Tainted: G B 5.7.0-rc2-syzkaller #0 [ 60.129681][ T7024] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.139726][ T7024] Call Trace: [ 60.143001][ T7024] dump_stack+0x188/0x20d [ 60.147313][ T7024] ? __sock_release+0x280/0x280 [ 60.152151][ T7024] panic+0x2e3/0x75c [ 60.156029][ T7024] ? add_taint.cold+0x16/0x16 [ 60.160682][ T7024] ? x25_disconnect+0x253/0x370 [ 60.165505][ T7024] ? trace_hardirqs_on+0x55/0x220 [ 60.170501][ T7024] ? x25_disconnect+0x253/0x370 [ 60.175322][ T7024] ? __sock_release+0x280/0x280 [ 60.180159][ T7024] end_report+0x4d/0x53 [ 60.184467][ T7024] __kasan_report.cold+0xd/0x4d [ 60.189290][ T7024] ? rcu_read_lock_held+0x1/0xb0 [ 60.194211][ T7024] ? x25_disconnect+0x253/0x370 [ 60.199031][ T7024] ? x25_disconnect+0x253/0x370 [ 60.203860][ T7024] kasan_report+0x33/0x50 [ 60.208165][ T7024] check_memory_region+0x141/0x190 [ 60.213266][ T7024] x25_disconnect+0x253/0x370 [ 60.217931][ T7024] x25_release+0x345/0x420 [ 60.222319][ T7024] __sock_release+0xcd/0x280 [ 60.226893][ T7024] sock_close+0x18/0x20 [ 60.231020][ T7024] __fput+0x33e/0x880 [ 60.234974][ T7024] task_work_run+0xf4/0x1b0 [ 60.239450][ T7024] exit_to_usermode_loop+0x2fa/0x360 [ 60.244705][ T7024] do_syscall_64+0x6b1/0x7d0 [ 60.249390][ T7024] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.255275][ T7024] RIP: 0033:0x4afb40 [ 60.259148][ T7024] 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 [ 60.278724][ T7024] RSP: 002b:000000c0000794f8 EFLAGS: 00000216 ORIG_RAX: 0000000000000003 [ 60.287204][ T7024] RAX: 0000000000000000 RBX: 000000c00002c000 RCX: 00000000004afb40 [ 60.295767][ T7024] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 60.303708][ T7024] RBP: 000000c000079538 R08: 0000000000000000 R09: 0000000000000000 [ 60.311664][ T7024] R10: 0000000000000000 R11: 0000000000000216 R12: ffffffffffffffff [ 60.319617][ T7024] R13: 0000000000000161 R14: 0000000000000160 R15: 0000000000000200 [ 60.329110][ T7024] Kernel Offset: disabled [ 60.334137][ T7024] Rebooting in 86400 seconds..