------------[ cut here ]------------ WARNING: CPU: 1 PID: 4183 at include/linux/skbuff.h:2824 pskb_may_pull_reason include/linux/skbuff.h:2824 [inline] WARNING: CPU: 1 PID: 4183 at include/linux/skbuff.h:2824 pskb_may_pull include/linux/skbuff.h:2840 [inline] WARNING: CPU: 1 PID: 4183 at include/linux/skbuff.h:2824 pskb_network_may_pull include/linux/skbuff.h:3199 [inline] WARNING: CPU: 1 PID: 4183 at include/linux/skbuff.h:2824 pskb_inet_may_pull include/net/ip_tunnels.h:466 [inline] WARNING: CPU: 1 PID: 4183 at include/linux/skbuff.h:2824 sit_tunnel_xmit+0x18b2/0x1f00 net/ipv6/sit.c:1071 Modules linked in: CPU: 1 UID: 0 PID: 4183 Comm: syz.7.1114 Not tainted syzkaller #0 60889c1c5e6bdc1f3cb1b6a230ba908545dccc71 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:pskb_may_pull_reason include/linux/skbuff.h:2824 [inline] RIP: 0010:pskb_may_pull include/linux/skbuff.h:2840 [inline] RIP: 0010:pskb_network_may_pull include/linux/skbuff.h:3199 [inline] RIP: 0010:pskb_inet_may_pull include/net/ip_tunnels.h:466 [inline] RIP: 0010:sit_tunnel_xmit+0x18b2/0x1f00 net/ipv6/sit.c:1071 Code: 24 10 48 8b 7c 24 18 e8 7c e0 78 ff 48 8b 74 24 08 4c 8b 74 24 28 e9 fd f4 ff ff e8 28 31 7a fc e9 b6 fa ff ff e8 1e 31 7a fc <0f> 0b e9 f7 e8 ff ff 44 89 ff 44 89 f6 e8 cc 32 7a fc 45 39 f7 0f RSP: 0018:ffffc9000ec1f1a0 EFLAGS: 00010287 RAX: ffffffff850d4782 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc90001651000 RSI: 00000000000000ae RDI: 00000000000000af RBP: ffffc9000ec1f340 R08: ffff888117652600 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff850d2ed0 R12: 1ffff11022b360de R13: dffffc0000000000 R14: ffff8881159b0640 R15: 00000000ffffff80 FS: 00007f679ee766c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000002008 CR3: 0000000126fd6000 CR4: 00000000003526b0 DR0: 0000000000010000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: __netdev_start_xmit include/linux/netdevice.h:5008 [inline] netdev_start_xmit include/linux/netdevice.h:5017 [inline] __dev_direct_xmit+0x395/0x5a0 net/core/dev.c:4614 __xsk_generic_xmit net/xdp/xsk.c:826 [inline] xsk_generic_xmit+0x1bef/0x3060 net/xdp/xsk.c:868 xsk_poll+0x2ca/0x580 net/xdp/xsk.c:999 sock_poll+0x23e/0x400 net/socket.c:1396 vfs_poll include/linux/poll.h:92 [inline] do_select+0xe82/0x16f0 fs/select.c:535 core_sys_select+0x549/0x7f0 fs/select.c:678 do_pselect fs/select.c:760 [inline] __do_sys_pselect6 fs/select.c:803 [inline] __se_sys_pselect6+0x268/0x320 fs/select.c:794 __x64_sys_pselect6+0xe9/0x110 fs/select.c:794 x64_sys_call+0x2980/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:271 do_syscall_x64 arch/x86/entry/common.c:47 [inline] do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f679df9e159 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f679ee76028 EFLAGS: 00000246 ORIG_RAX: 000000000000010e RAX: ffffffffffffffda RBX: 00007f679e225fa0 RCX: 00007f679df9e159 RDX: 0000000000000000 RSI: 0000200000000100 RDI: 0000000000000040 RBP: 00007f679e03506b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f679e226038 R14: 00007f679e225fa0 R15: 00007ffcbbb99478 ---[ end trace 0000000000000000 ]---