IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready batman_adv: batadv0: Interface activated: batadv_slave_1 IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 8103 Comm: syz-executor766 Not tainted 4.19.199-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid+0x81/0xf0 lib/list_debug.c:51 Code: 0f 84 c0 f4 84 04 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 c1 f4 84 04 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 51 49 8b 14 24 48 39 ea 0f 85 78 f4 84 04 49 8d 7d RSP: 0018:ffff88809629f4e8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff888094aa84c0 RCX: ffffffff814bdcab RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888094aa87e8 RBP: ffff888094aa87e0 R08: 0000000000000001 R09: fffffbfff15ce98c R10: ffffffff8ae74c63 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888094aa8740 R15: ffff888094aa87e8 FS: 00000000007fe300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000600 CR3: 0000000097e34000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:117 [inline] list_del include/linux/list.h:125 [inline] cbs_destroy+0x81/0x280 net/sched/sch_cbs.c:448 qdisc_create+0xb70/0x1130 net/sched/sch_api.c:1204 tc_modify_qdisc+0x50d/0x1a80 net/sched/sch_api.c:1572 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4782 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2457 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1911 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2225 __sys_sendmsg net/socket.c:2263 [inline] __do_sys_sendmsg net/socket.c:2272 [inline] __se_sys_sendmsg net/socket.c:2270 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2270 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x443299 Code: 28 c3 e8 4a 15 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 RSP: 002b:00007ffccc521c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ffccc521c88 RCX: 0000000000443299 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000004 RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffccc521c90 R13: 00007ffccc521cb0 R14: 00000000004b8018 R15: 00000000004004b8 Modules linked in: ---[ end trace feda66f48966a124 ]--- RIP: 0010:__list_del_entry_valid+0x81/0xf0 lib/list_debug.c:51 Code: 0f 84 c0 f4 84 04 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 c1 f4 84 04 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 51 49 8b 14 24 48 39 ea 0f 85 78 f4 84 04 49 8d 7d RSP: 0018:ffff88809629f4e8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff888094aa84c0 RCX: ffffffff814bdcab RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888094aa87e8 RBP: ffff888094aa87e0 R08: 0000000000000001 R09: fffffbfff15ce98c R10: ffffffff8ae74c63 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888094aa8740 R15: ffff888094aa87e8 FS: 00000000007fe300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000600 CR3: 0000000097e34000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400