------------[ cut here ]------------ WARNING: CPU: 1 PID: 5089 at include/linux/skbuff.h:4226 skb_set_delivery_type_by_clockid include/linux/skbuff.h:4226 [inline] WARNING: CPU: 1 PID: 5089 at include/linux/skbuff.h:4226 __ip6_make_skb+0x14f8/0x2470 net/ipv6/ip6_output.c:1930 Modules linked in: CPU: 1 PID: 5089 Comm: syz-executor227 Not tainted 6.9.0-syzkaller-08561-g2c1713a8f1c9 #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:4226 [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 dd 50 6e f7 83 e3 fc 44 09 e3 eb 79 e8 d0 50 6e f7 eb 6f e8 c9 50 6e 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:ffffc9000345f400 EFLAGS: 00010293 RAX: ffffffff8a27e107 RBX: 00000000000000ff RCX: ffff888025a99e00 RDX: 0000000000000000 RSI: ffffffff8f6e8f20 RDI: 00000000000000ff RBP: ffffc9000345f610 R08: 0000000000000001 R09: ffffffff8a27e049 R10: 0000000000000003 R11: ffff888025a99e00 R12: ffff88807ab76730 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc9000345f6a0 FS: 000055556e2a2380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000045ad50 CR3: 000000007e9e2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe6cfe18ab9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe2f15e328 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe6cfe18ab9 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000003 RBP: 00007fe6cfe8b5f0 R08: 0000000000000006 R09: 0000000000000006 R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000001 R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001