binder: undelivered TRANSACTION_ERROR: 29189 binder: send failed reply for transaction 5 to 8701:8703 binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29189 ================================================================== BUG: KMSAN: uninit-value in __ipv6_prefix_equal64_half include/net/ipv6.h:535 [inline] BUG: KMSAN: uninit-value in ipv6_prefix_equal include/net/ipv6.h:552 [inline] BUG: KMSAN: uninit-value in check_6rd net/ipv6/sit.c:771 [inline] BUG: KMSAN: uninit-value in try_6rd net/ipv6/sit.c:805 [inline] BUG: KMSAN: uninit-value in ipip6_tunnel_xmit net/ipv6/sit.c:865 [inline] BUG: KMSAN: uninit-value in sit_tunnel_xmit+0x1b7e/0x3d40 net/ipv6/sit.c:1029 CPU: 1 PID: 8733 Comm: syz-executor3 Not tainted 4.20.0-rc3+ #92 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x32d/0x480 lib/dump_stack.c:113 kmsan_report+0x19f/0x300 mm/kmsan/kmsan.c:923 __msan_warning+0x76/0xc0 mm/kmsan/kmsan_instr.c:416 __ipv6_prefix_equal64_half include/net/ipv6.h:535 [inline] ipv6_prefix_equal include/net/ipv6.h:552 [inline] check_6rd net/ipv6/sit.c:771 [inline] try_6rd net/ipv6/sit.c:805 [inline] ipip6_tunnel_xmit net/ipv6/sit.c:865 [inline] sit_tunnel_xmit+0x1b7e/0x3d40 net/ipv6/sit.c:1029 __netdev_start_xmit include/linux/netdevice.h:4356 [inline] netdev_start_xmit include/linux/netdevice.h:4365 [inline] xmit_one net/core/dev.c:3252 [inline] dev_hard_start_xmit+0x6dc/0xde0 net/core/dev.c:3268 __dev_queue_xmit+0x2d9e/0x3e00 net/core/dev.c:3838 dev_queue_xmit+0x4b/0x60 net/core/dev.c:3871 packet_snd net/packet/af_packet.c:2928 [inline] packet_sendmsg+0x797f/0x9180 net/packet/af_packet.c:2953 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg net/socket.c:631 [inline] ___sys_sendmsg+0xe3b/0x1240 net/socket.c:2116 __sys_sendmsg net/socket.c:2154 [inline] __do_sys_sendmsg net/socket.c:2163 [inline] __se_sys_sendmsg+0x305/0x460 net/socket.c:2161 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2161 do_syscall_64+0xcf/0x110 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa5fac77c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa5fac786d4 R13: 00000000004c3f7d R14: 00000000004d6778 R15: 00000000ffffffff Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:258 [inline] kmsan_internal_poison_shadow+0x68/0x130 mm/kmsan/kmsan.c:181 kmsan_kmalloc+0xa1/0x100 mm/kmsan/kmsan_hooks.c:104 kmsan_slab_alloc+0xe/0x10 mm/kmsan/kmsan_hooks.c:113 slab_post_alloc_hook mm/slab.h:446 [inline] slab_alloc_node mm/slub.c:2765 [inline] __kmalloc_node_track_caller+0xf62/0x14e0 mm/slub.c:4396 __kmalloc_reserve net/core/skbuff.c:138 [inline] __alloc_skb+0x42b/0xeb0 net/core/skbuff.c:206 alloc_skb include/linux/skbuff.h:998 [inline] alloc_skb_with_frags+0x1c9/0xa80 net/core/skbuff.c:5220 sock_alloc_send_pskb+0xeb3/0x14c0 net/core/sock.c:2083 packet_alloc_skb net/packet/af_packet.c:2781 [inline] packet_snd net/packet/af_packet.c:2872 [inline] packet_sendmsg+0x6719/0x9180 net/packet/af_packet.c:2953 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg net/socket.c:631 [inline] ___sys_sendmsg+0xe3b/0x1240 net/socket.c:2116 __sys_sendmsg net/socket.c:2154 [inline] __do_sys_sendmsg net/socket.c:2163 [inline] __se_sys_sendmsg+0x305/0x460 net/socket.c:2161 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2161 do_syscall_64+0xcf/0x110 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 ==================================================================