------------[ cut here ]------------ WARNING: CPU: 1 PID: 6993 at include/linux/skbuff.h:4222 skb_set_delivery_type_by_clockid include/linux/skbuff.h:4222 [inline] WARNING: CPU: 1 PID: 6993 at include/linux/skbuff.h:4222 __ip6_make_skb+0x14f8/0x2470 net/ipv6/ip6_output.c:1930 Modules linked in: CPU: 1 PID: 6993 Comm: syz-executor.3 Not tainted 6.9.0-syzkaller-12155-g7015843afcaf #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:skb_set_delivery_type_by_clockid include/linux/skbuff.h:4222 [inline] RIP: 0010:__ip6_make_skb+0x14f8/0x2470 net/ipv6/ip6_output.c:1930 Code: c0 0f 85 94 0a 00 00 41 8b 5d 00 4d 85 f6 74 0d e8 2d 90 6f f7 83 e3 fc 44 09 e3 eb 79 e8 20 90 6f f7 eb 6f e8 19 90 6f f7 90 <0f> 0b 90 48 8b 5c 24 08 48 8d 7b 20 48 89 f8 48 c1 e8 03 42 80 3c RSP: 0018:ffffc90004507400 EFLAGS: 00010283 RAX: ffffffff8a268467 RBX: 00000000000000ff RCX: 0000000000040000 RDX: ffffc9000ac0e000 RSI: 000000000000178b RDI: 000000000000178c RBP: ffffc90004507610 R08: 0000000000000001 R09: ffffffff8a2683a9 R10: 0000000000000003 R11: ffff88802dce9e00 R12: ffff88802bf97030 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc900045076a0 FS: 00007fa5af7b46c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33222000 CR3: 00000000632ca000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: ip6_make_skb+0x48b/0x530 net/ipv6/ip6_output.c:2046 udpv6_sendmsg+0x237f/0x3270 net/ipv6/udp.c:1584 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xef/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2585 ___sys_sendmsg net/socket.c:2639 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2668 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa5aea7cf69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa5af7b40c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa5aebb3f80 RCX: 00007fa5aea7cf69 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000004 RBP: 00007fa5aeada6fe R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fa5aebb3f80 R15: 00007ffcb3955288