Warning: Permanently added '10.128.1.29' (ECDSA) to the list of known hosts. 2020/05/08 23:11:57 fuzzer started 2020/05/08 23:11:57 connecting to host at 10.128.0.26:41333 2020/05/08 23:11:57 checking machine... 2020/05/08 23:11:57 checking revisions... 2020/05/08 23:11:57 testing simple program... [ 54.691212][ T7030] IPVS: ftp: loaded support on port[0] = 21 2020/05/08 23:11:57 building call list... [ 55.083890][ T36] tipc: TX() has been purged, node left! [ 56.303057][ T7025] can: request_module (can-proto-0) failed. executing program [ 58.310236][ T7025] can: request_module (can-proto-0) failed. [ 58.321487][ T7025] can: request_module (can-proto-0) failed. [ 58.802633][ T7025] ================================================================== [ 58.810891][ T7025] BUG: KASAN: null-ptr-deref in x25_disconnect+0x253/0x370 [ 58.818068][ T7025] Write of size 4 at addr 00000000000000d8 by task syz-fuzzer/7025 [ 58.825930][ T7025] [ 58.828264][ T7025] CPU: 0 PID: 7025 Comm: syz-fuzzer Not tainted 5.7.0-rc2-syzkaller #0 [ 58.836472][ T7025] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.846503][ T7025] Call Trace: [ 58.849792][ T7025] dump_stack+0x188/0x20d [ 58.854103][ T7025] ? x25_disconnect+0x253/0x370 [ 58.858929][ T7025] ? __sock_release+0x280/0x280 [ 58.863761][ T7025] __kasan_report.cold+0x5/0x4d [ 58.868607][ T7025] ? rcu_read_lock_held+0x1/0xb0 [ 58.873534][ T7025] ? x25_disconnect+0x253/0x370 [ 58.878361][ T7025] ? x25_disconnect+0x253/0x370 [ 58.883184][ T7025] kasan_report+0x33/0x50 [ 58.887494][ T7025] check_memory_region+0x141/0x190 [ 58.892599][ T7025] x25_disconnect+0x253/0x370 [ 58.897258][ T7025] x25_release+0x345/0x420 [ 58.901666][ T7025] __sock_release+0xcd/0x280 [ 58.906234][ T7025] sock_close+0x18/0x20 [ 58.910366][ T7025] __fput+0x33e/0x880 [ 58.914329][ T7025] task_work_run+0xf4/0x1b0 [ 58.918830][ T7025] exit_to_usermode_loop+0x2fa/0x360 [ 58.924095][ T7025] do_syscall_64+0x6b1/0x7d0 [ 58.928671][ T7025] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.934560][ T7025] RIP: 0033:0x4afb40 [ 58.938447][ T7025] 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 [ 58.958090][ T7025] RSP: 002b:000000c000075478 EFLAGS: 00000212 ORIG_RAX: 0000000000000003 [ 58.966551][ T7025] RAX: 0000000000000000 RBX: 000000c00002c000 RCX: 00000000004afb40 [ 58.974550][ T7025] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 58.982545][ T7025] RBP: 000000c0000754b8 R08: 0000000000000000 R09: 0000000000000000 [ 58.990495][ T7025] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 58.998443][ T7025] R13: 0000000000000160 R14: 000000000000015f R15: 0000000000000200 [ 59.006422][ T7025] ================================================================== [ 59.014472][ T7025] Disabling lock debugging due to kernel taint [ 59.020680][ T7025] Kernel panic - not syncing: panic_on_warn set ... [ 59.027261][ T7025] CPU: 0 PID: 7025 Comm: syz-fuzzer Tainted: G B 5.7.0-rc2-syzkaller #0 [ 59.036872][ T7025] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.046911][ T7025] Call Trace: [ 59.050198][ T7025] dump_stack+0x188/0x20d [ 59.054511][ T7025] ? __sock_release+0x280/0x280 [ 59.059476][ T7025] panic+0x2e3/0x75c [ 59.063401][ T7025] ? add_taint.cold+0x16/0x16 [ 59.068076][ T7025] ? x25_disconnect+0x253/0x370 [ 59.072963][ T7025] ? trace_hardirqs_on+0x55/0x220 [ 59.078026][ T7025] ? x25_disconnect+0x253/0x370 [ 59.082861][ T7025] ? __sock_release+0x280/0x280 [ 59.087687][ T7025] end_report+0x4d/0x53 [ 59.091825][ T7025] __kasan_report.cold+0xd/0x4d [ 59.096656][ T7025] ? rcu_read_lock_held+0x1/0xb0 [ 59.101584][ T7025] ? x25_disconnect+0x253/0x370 [ 59.106408][ T7025] ? x25_disconnect+0x253/0x370 [ 59.111251][ T7025] kasan_report+0x33/0x50 [ 59.115576][ T7025] check_memory_region+0x141/0x190 [ 59.120662][ T7025] x25_disconnect+0x253/0x370 [ 59.125339][ T7025] x25_release+0x345/0x420 [ 59.129749][ T7025] __sock_release+0xcd/0x280 [ 59.134329][ T7025] sock_close+0x18/0x20 [ 59.138494][ T7025] __fput+0x33e/0x880 [ 59.142467][ T7025] task_work_run+0xf4/0x1b0 [ 59.147009][ T7025] exit_to_usermode_loop+0x2fa/0x360 [ 59.152276][ T7025] do_syscall_64+0x6b1/0x7d0 [ 59.156888][ T7025] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.162755][ T7025] RIP: 0033:0x4afb40 [ 59.166625][ T7025] 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 [ 59.186201][ T7025] RSP: 002b:000000c000075478 EFLAGS: 00000212 ORIG_RAX: 0000000000000003 [ 59.194599][ T7025] RAX: 0000000000000000 RBX: 000000c00002c000 RCX: 00000000004afb40 [ 59.202559][ T7025] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 59.210506][ T7025] RBP: 000000c0000754b8 R08: 0000000000000000 R09: 0000000000000000 [ 59.218450][ T7025] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 59.226412][ T7025] R13: 0000000000000160 R14: 000000000000015f R15: 0000000000000200 [ 59.235527][ T7025] Kernel Offset: disabled [ 59.239846][ T7025] Rebooting in 86400 seconds..