Warning: Permanently added '10.128.1.56' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 71.802319][ T6515] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 71.814167][ T6515] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 71.822566][ T6515] CPU: 0 PID: 6515 Comm: syz-executor644 Not tainted 5.15.0-rc3-next-20211001-syzkaller #0 [ 71.832827][ T6515] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.842875][ T6515] RIP: 0010:fq_codel_enqueue+0x83e/0x10c0 [ 71.848601][ T6515] Code: 78 13 2a fa 45 39 ec 0f 83 cb 00 00 00 e8 5a 11 2a fa 48 8b 44 24 10 80 38 00 0f 85 9a 06 00 00 49 8b 07 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 6e 06 00 00 48 8b 10 48 8d 78 28 49 89 17 48 [ 71.868196][ T6515] RSP: 0018:ffffc90002baf480 EFLAGS: 00010246 [ 71.874270][ T6515] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 71.882222][ T6515] RDX: 0000000000000000 RSI: ffffffff874c5de6 RDI: 0000000000000003 [ 71.890173][ T6515] RBP: ffffc90002baf650 R08: 0000000000000400 R09: 0000000000000001 [ 71.898125][ T6515] R10: ffffffff874c5d46 R11: 0000000000000000 R12: 0000000000000400 [ 71.906076][ T6515] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88801cc30000 [ 71.914036][ T6515] FS: 0000555555677300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 71.923245][ T6515] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.929921][ T6515] CR2: 00007f91443596c0 CR3: 000000006fb7e000 CR4: 00000000003506f0 [ 71.937877][ T6515] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.945846][ T6515] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.953806][ T6515] Call Trace: [ 71.957073][ T6515] [ 71.960086][ T6515] ? lock_release+0x720/0x720 [ 71.964751][ T6515] ? INET_ECN_set_ce+0x790/0x790 [ 71.969694][ T6515] ? do_raw_spin_lock+0x120/0x2b0 [ 71.974716][ T6515] ? rwlock_bug.part.0+0x90/0x90 [ 71.979658][ T6515] dev_qdisc_enqueue+0x40/0x300 [ 71.984511][ T6515] __dev_queue_xmit+0x1f0e/0x36e0 [ 71.989648][ T6515] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 71.994932][ T6515] ? skb_release_data+0x129/0x790 [ 72.000053][ T6515] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 72.006288][ T6515] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.012608][ T6515] ? __phys_addr+0xc4/0x140 [ 72.017113][ T6515] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 72.023341][ T6515] ? skb_headers_offset_update+0x12e/0x260 [ 72.029437][ T6515] ? pskb_expand_head+0x5a0/0x1060 [ 72.034542][ T6515] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.040777][ T6515] ? is_percpu_thread+0xa4/0xc0 [ 72.045630][ T6515] __bpf_redirect+0x5ba/0xd20 [ 72.050324][ T6515] ? skb_ensure_writable+0xdc/0x450 [ 72.055704][ T6515] bpf_clone_redirect+0x2ae/0x420 [ 72.060733][ T6515] bpf_prog_cc75667d52cf7bb0+0x56/0xe18 [ 72.066267][ T6515] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 72.072414][ T6515] ? find_held_lock+0x2d/0x110 [ 72.077189][ T6515] ? bpf_test_timer_enter+0xa0/0x160 [ 72.082464][ T6515] ? lock_downgrade+0x6e0/0x6e0 [ 72.087311][ T6515] ? ktime_get+0x38a/0x470 [ 72.091716][ T6515] ? lockdep_hardirqs_on+0x79/0x100 [ 72.096901][ T6515] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 72.102778][ T6515] ? ktime_get+0x30b/0x470 [ 72.107187][ T6515] ? bpf_test_timer_enter+0xa0/0x160 [ 72.112465][ T6515] bpf_test_run+0x381/0xa30 [ 72.116956][ T6515] ? bpf_test_timer_continue+0x420/0x420 [ 72.122678][ T6515] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 72.128905][ T6515] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.135136][ T6515] ? __phys_addr+0xc4/0x140 [ 72.139623][ T6515] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 72.145848][ T6515] ? eth_type_trans+0x29e/0x640 [ 72.150687][ T6515] ? __build_skb+0x50/0x60 [ 72.155187][ T6515] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.161413][ T6515] bpf_prog_test_run_skb+0xb3b/0x1e80 [ 72.166876][ T6515] ? bpf_prog_test_run_raw_tp+0x630/0x630 [ 72.172581][ T6515] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.178806][ T6515] ? __fget_light+0x215/0x280 [ 72.183469][ T6515] ? __sys_bpf+0x2094/0x5df0 [ 72.188061][ T6515] ? bpf_prog_test_run_raw_tp+0x630/0x630 [ 72.193768][ T6515] __sys_bpf+0x2137/0x5df0 [ 72.198184][ T6515] ? bpf_link_get_from_fd+0x110/0x110 [ 72.203551][ T6515] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 72.209514][ T6515] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 72.215532][ T6515] ? find_held_lock+0x2d/0x110 [ 72.220350][ T6515] ? trace_hardirqs_on+0x38/0x1c0 [ 72.225374][ T6515] __x64_sys_bpf+0x75/0xb0 [ 72.229788][ T6515] ? syscall_enter_from_user_mode+0x21/0x70 [ 72.235717][ T6515] do_syscall_64+0x35/0xb0 [ 72.240120][ T6515] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.246009][ T6515] RIP: 0033:0x7fec5905f4d9 [ 72.250426][ T6515] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 72.270085][ T6515] RSP: 002b:00007ffd61cefde8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 72.278482][ T6515] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fec5905f4d9 [ 72.286523][ T6515] RDX: 0000000000000048 RSI: 0000000020000140 RDI: 000000000000000a [ 72.294530][ T6515] RBP: 00007fec590234c0 R08: 0000000000000000 R09: 0000000000000000 [ 72.302536][ T6515] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fec59023550 [ 72.310487][ T6515] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 72.318562][ T6515] [ 72.321574][ T6515] Modules linked in: [ 72.325592][ T6515] ---[ end trace 8e3a3971fe6c3d60 ]--- [ 72.331045][ T6515] RIP: 0010:fq_codel_enqueue+0x83e/0x10c0 [ 72.336824][ T6515] Code: 78 13 2a fa 45 39 ec 0f 83 cb 00 00 00 e8 5a 11 2a fa 48 8b 44 24 10 80 38 00 0f 85 9a 06 00 00 49 8b 07 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 6e 06 00 00 48 8b 10 48 8d 78 28 49 89 17 48 [ 72.356516][ T6515] RSP: 0018:ffffc90002baf480 EFLAGS: 00010246 [ 72.362621][ T6515] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 72.370650][ T6515] RDX: 0000000000000000 RSI: ffffffff874c5de6 RDI: 0000000000000003 [ 72.378686][ T6515] RBP: ffffc90002baf650 R08: 0000000000000400 R09: 0000000000000001 [ 72.386710][ T6515] R10: ffffffff874c5d46 R11: 0000000000000000 R12: 0000000000000400 [ 72.394742][ T6515] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88801cc30000 [ 72.403084][ T6515] FS: 0000555555677300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 72.412121][ T6515] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.418791][ T6515] CR2: 00007f91443596c0 CR3: 000000006fb7e000 CR4: 00000000003506f0 [ 72.426825][ T6515] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.434844][ T6515] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.442912][ T6515] Kernel panic - not syncing: Fatal exception in interrupt [ 72.450351][ T6515] Kernel Offset: disabled [ 72.454682][ T6515] Rebooting in 86400 seconds..