Warning: Permanently added '10.128.1.31' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 74.008565][ T8447] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 74.020378][ T8447] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 74.028830][ T8447] CPU: 0 PID: 8447 Comm: syz-executor446 Not tainted 5.11.0-rc6-syzkaller #0 [ 74.037710][ T8447] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.047860][ T8447] RIP: 0010:fq_codel_enqueue+0x8a3/0x10c0 [ 74.053608][ T8447] Code: d3 67 4c fa 45 39 ec 0f 83 cb 00 00 00 e8 25 62 4c fa 48 8b 44 24 10 80 38 00 0f 85 32 06 00 00 49 8b 07 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 06 06 00 00 48 8b 10 48 8d 78 28 49 89 17 48 [ 74.073329][ T8447] RSP: 0018:ffffc900017ef600 EFLAGS: 00010246 [ 74.079593][ T8447] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 74.087766][ T8447] RDX: 0000000000000000 RSI: ffffffff87265d7b RDI: 0000000000000003 [ 74.097349][ T8447] RBP: ffffc900017ef798 R08: 0000000000000400 R09: 0000000000000001 [ 74.110710][ T8447] R10: ffffffff87265cdb R11: 0000000000000000 R12: 0000000000000400 [ 74.119331][ T8447] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88802b670000 [ 74.127311][ T8447] FS: 00007f10e19b2700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 74.136598][ T8447] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.143277][ T8447] CR2: 0000000020000080 CR3: 0000000014207000 CR4: 00000000001506f0 [ 74.151257][ T8447] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.159229][ T8447] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.167395][ T8447] Call Trace: [ 74.170788][ T8447] ? do_raw_spin_lock+0x120/0x2b0 [ 74.175832][ T8447] ? INET_ECN_set_ce+0x780/0x780 [ 74.180866][ T8447] ? rwlock_bug.part.0+0x90/0x90 [ 74.185824][ T8447] __dev_queue_xmit+0x1943/0x2e00 [ 74.190886][ T8447] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 74.196183][ T8447] ? skb_release_data+0x11b/0x750 [ 74.201214][ T8447] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 74.207466][ T8447] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 74.213716][ T8447] ? __phys_addr+0xc4/0x140 [ 74.218231][ T8447] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 74.224482][ T8447] ? skb_headers_offset_update+0x12e/0x260 [ 74.230306][ T8447] ? pskb_expand_head+0x5a0/0x1050 [ 74.235442][ T8447] __bpf_redirect+0x521/0xc50 [ 74.240138][ T8447] ? skb_ensure_writable+0xdc/0x450 [ 74.245448][ T8447] bpf_clone_redirect+0x2ae/0x420 [ 74.250513][ T8447] bpf_prog_cc75667d52cf7bb0+0x56/0x188 [ 74.256091][ T8447] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 74.262089][ T8447] ? __build_skb+0x21/0x60 [ 74.266531][ T8447] ? build_skb+0x1c/0x190 [ 74.270890][ T8447] ? bpf_prog_test_run_skb+0x347/0x1c50 [ 74.276467][ T8447] ? find_held_lock+0x2d/0x110 [ 74.281245][ T8447] ? bpf_test_run+0x18c/0xcc0 [ 74.285929][ T8447] ? lock_downgrade+0x6d0/0x6d0 [ 74.290791][ T8447] ? lock_release+0x710/0x710 [ 74.295500][ T8447] ? ktime_get+0x1bf/0x1e0 [ 74.300109][ T8447] ? lockdep_hardirqs_on+0x79/0x100 [ 74.305369][ T8447] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 74.311114][ T8447] ? ktime_get+0x167/0x1e0 [ 74.315549][ T8447] bpf_test_run+0x3f2/0xcc0 [ 74.320098][ T8447] ? eth_type_trans+0x360/0x690 [ 74.326093][ T8447] ? __bpf_prog_test_run_raw_tp+0x460/0x460 [ 74.332031][ T8447] ? __build_skb+0x53/0x60 [ 74.336464][ T8447] bpf_prog_test_run_skb+0xabc/0x1c50 [ 74.341855][ T8447] ? bpf_prog_test_run_raw_tp+0x630/0x630 [ 74.347593][ T8447] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 74.353849][ T8447] ? fput+0x2a/0x50 [ 74.357666][ T8447] ? __do_sys_bpf+0x1e10/0x4f00 [ 74.362618][ T8447] ? bpf_prog_test_run_raw_tp+0x630/0x630 [ 74.368459][ T8447] __do_sys_bpf+0x1ea9/0x4f00 [ 74.373161][ T8447] ? __fget_files+0x288/0x3d0 [ 74.381093][ T8447] ? bpf_link_get_from_fd+0x110/0x110 [ 74.386510][ T8447] ? __fget_light+0xea/0x280 [ 74.391315][ T8447] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 74.397934][ T8447] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 74.404287][ T8447] ? fput+0x2a/0x50 [ 74.408132][ T8447] ? syscall_enter_from_user_mode+0x1d/0x50 [ 74.414059][ T8447] do_syscall_64+0x2d/0x70 [ 74.418510][ T8447] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 74.424425][ T8447] RIP: 0033:0x445d49 [ 74.428333][ T8447] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 74.449607][ T8447] RSP: 002b:00007f10e19b22f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 74.458682][ T8447] RAX: ffffffffffffffda RBX: 00000000004cb440 RCX: 0000000000445d49 [ 74.467118][ T8447] RDX: 0000000000000048 RSI: 0000000020000140 RDI: 000000000000000a [ 74.475312][ T8447] RBP: 000000000049b49c R08: 0000000000000000 R09: 0000000000000000 [ 74.483471][ T8447] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000049b078 [ 74.491837][ T8447] R13: 656c6c616b7a7973 R14: 7e6005433f000e28 R15: 00000000004cb448 [ 74.499851][ T8447] Modules linked in: [ 74.504031][ T8447] ---[ end trace 08ef3eeee0694888 ]--- [ 74.509510][ T8447] RIP: 0010:fq_codel_enqueue+0x8a3/0x10c0 [ 74.515655][ T8447] Code: d3 67 4c fa 45 39 ec 0f 83 cb 00 00 00 e8 25 62 4c fa 48 8b 44 24 10 80 38 00 0f 85 32 06 00 00 49 8b 07 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 06 06 00 00 48 8b 10 48 8d 78 28 49 89 17 48 [ 74.536122][ T8447] RSP: 0018:ffffc900017ef600 EFLAGS: 00010246 [ 74.542750][ T8447] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 74.550986][ T8447] RDX: 0000000000000000 RSI: ffffffff87265d7b RDI: 0000000000000003 [ 74.569473][ T8447] RBP: ffffc900017ef798 R08: 0000000000000400 R09: 0000000000000001 [ 74.578838][ T8447] R10: ffffffff87265cdb R11: 0000000000000000 R12: 0000000000000400 [ 74.587510][ T8447] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88802b670000 [ 74.595880][ T8447] FS: 00007f10e19b2700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 74.605063][ T8447] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.611946][ T8447] CR2: 0000000020000080 CR3: 0000000014207000 CR4: 00000000001506f0 [ 74.620353][ T8447] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.628473][ T8447] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.636512][ T8447] Kernel panic - not syncing: Fatal exception in interrupt [ 74.644257][ T8447] Kernel Offset: disabled [ 74.648604][ T8447] Rebooting in 86400 seconds..