Warning: Permanently added '10.128.0.197' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 63.766014][ T7068] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 63.777887][ T7068] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 63.786273][ T7068] CPU: 0 PID: 7068 Comm: syz-executor657 Not tainted 5.7.0-rc1-next-20200415-syzkaller #0 [ 63.796127][ T7068] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.806172][ T7068] RIP: 0010:fq_codel_enqueue+0xa75/0x11b0 [ 63.811873][ T7068] Code: 22 fb 44 3b 64 24 70 0f 83 dd 00 00 00 e8 23 28 22 fb 48 8b 44 24 40 80 38 00 0f 85 5a 05 00 00 49 8b 06 48 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 52 05 00 00 48 8b 10 49 89 16 48 89 c2 48 c1 [ 63.831463][ T7068] RSP: 0018:ffffc900051b77f0 EFLAGS: 00010246 [ 63.837499][ T7068] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc900051b79d0 [ 63.845455][ T7068] RDX: 0000000000000000 RSI: ffffffff86510c6d RDI: 0000000000000000 [ 63.853399][ T7068] RBP: ffffc900051b7900 R08: ffff8880a485a500 R09: fffffbfff1862754 [ 63.861351][ T7068] R10: ffffffff8c313a9f R11: fffffbfff1862753 R12: 0000000000000400 [ 63.869295][ T7068] R13: dffffc0000000000 R14: ffff88808dd60000 R15: ffffc900051b79d0 [ 63.877245][ T7068] FS: 000000000251b880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 63.886143][ T7068] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.892696][ T7068] CR2: 0000000020000080 CR3: 00000000a0a31000 CR4: 00000000001406f0 [ 63.900640][ T7068] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.908601][ T7068] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.916540][ T7068] Call Trace: [ 63.919808][ T7068] ? drop_func+0x60/0x60 [ 63.924033][ T7068] ? rwlock_bug.part.0+0x90/0x90 [ 63.928955][ T7068] ? rcu_read_lock_bh_held+0x5a/0xb0 [ 63.934211][ T7068] ? rcu_read_lock_sched_held+0xd0/0xd0 [ 63.939732][ T7068] __dev_queue_xmit+0x154a/0x3070 [ 63.944731][ T7068] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 63.949989][ T7068] ? _copy_from_iter+0x270/0xb60 [ 63.954905][ T7068] ? __phys_addr_symbol+0x2c/0x70 [ 63.959915][ T7068] ? __check_object_size+0x171/0x437 [ 63.965173][ T7068] ? packet_parse_headers.isra.0+0x117/0x470 [ 63.971124][ T7068] ? __unregister_prot_hook+0x320/0x320 [ 63.976641][ T7068] ? packet_sendmsg+0x23cc/0x5ce0 [ 63.981635][ T7068] packet_sendmsg+0x23cc/0x5ce0 [ 63.986464][ T7068] ? mark_held_locks+0xe0/0xe0 [ 63.991205][ T7068] ? aa_label_sk_perm+0x89/0xe0 [ 63.996027][ T7068] ? aa_sk_perm+0x319/0xac0 [ 64.000514][ T7068] ? packet_notifier+0x860/0x860 [ 64.005420][ T7068] ? aa_af_perm+0x260/0x260 [ 64.009912][ T7068] ? packet_do_bind+0x452/0xc00 [ 64.014734][ T7068] ? packet_notifier+0x860/0x860 [ 64.019646][ T7068] sock_sendmsg+0xcf/0x120 [ 64.024035][ T7068] __sys_sendto+0x220/0x330 [ 64.028515][ T7068] ? __ia32_sys_getpeername+0xb0/0xb0 [ 64.033854][ T7068] ? packet_do_bind+0x452/0xc00 [ 64.038677][ T7068] ? __sys_bind+0x13e/0x250 [ 64.043151][ T7068] ? __ia32_sys_socketpair+0xf0/0xf0 [ 64.048406][ T7068] ? sock_create_kern+0x40/0x40 [ 64.053241][ T7068] ? fpregs_mark_activate+0x320/0x320 [ 64.058586][ T7068] __x64_sys_sendto+0xdd/0x1b0 [ 64.063320][ T7068] ? lockdep_hardirqs_on+0x463/0x620 [ 64.068577][ T7068] do_syscall_64+0xf6/0x7d0 [ 64.073055][ T7068] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 64.078915][ T7068] RIP: 0033:0x4404e9 [ 64.082783][ T7068] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 64.102353][ T7068] RSP: 002b:00007ffe9df1dd88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 64.110735][ T7068] RAX: ffffffffffffffda RBX: 00000000004a167e RCX: 00000000004404e9 [ 64.118688][ T7068] RDX: 00000000000001e8 RSI: 0000000020000480 RDI: 0000000000000005 [ 64.126629][ T7068] RBP: 54c6c2ff093a6d32 R08: 0000000000000000 R09: 0000000000000000 [ 64.134570][ T7068] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000010000 [ 64.142611][ T7068] R13: 0000000000401e00 R14: 0000000000000000 R15: 0000000000000000 [ 64.150565][ T7068] Modules linked in: [ 64.154516][ T7068] ---[ end trace 024ebfc72596d1e6 ]--- [ 64.160002][ T7068] RIP: 0010:fq_codel_enqueue+0xa75/0x11b0 [ 64.165718][ T7068] Code: 22 fb 44 3b 64 24 70 0f 83 dd 00 00 00 e8 23 28 22 fb 48 8b 44 24 40 80 38 00 0f 85 5a 05 00 00 49 8b 06 48 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 52 05 00 00 48 8b 10 49 89 16 48 89 c2 48 c1 [ 64.185369][ T7068] RSP: 0018:ffffc900051b77f0 EFLAGS: 00010246 [ 64.191473][ T7068] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc900051b79d0 [ 64.199502][ T7068] RDX: 0000000000000000 RSI: ffffffff86510c6d RDI: 0000000000000000 [ 64.207510][ T7068] RBP: ffffc900051b7900 R08: ffff8880a485a500 R09: fffffbfff1862754 [ 64.215476][ T7068] R10: ffffffff8c313a9f R11: fffffbfff1862753 R12: 0000000000000400 [ 64.223507][ T7068] R13: dffffc0000000000 R14: ffff88808dd60000 R15: ffffc900051b79d0 [ 64.231520][ T7068] FS: 000000000251b880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 64.240525][ T7068] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.247106][ T7068] CR2: 0000000020000080 CR3: 00000000a0a31000 CR4: 00000000001406f0 [ 64.255116][ T7068] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.263119][ T7068] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.271108][ T7068] Kernel panic - not syncing: Fatal exception in interrupt [ 64.279495][ T7068] Kernel Offset: disabled [ 64.283807][ T7068] Rebooting in 86400 seconds..