------------[ cut here ]------------ WARNING: CPU: 1 PID: 5535 at net/core/dev.c:9418 dev_xdp_detach_link net/core/dev.c:9418 [inline] WARNING: CPU: 1 PID: 5535 at net/core/dev.c:9418 bpf_xdp_link_release+0x468/0x4c0 net/core/dev.c:9433 Modules linked in: CPU: 1 PID: 5535 Comm: syz.4.270 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:dev_xdp_detach_link net/core/dev.c:9418 [inline] RIP: 0010:bpf_xdp_link_release+0x468/0x4c0 net/core/dev.c:9433 Code: 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 80 00 00 00 75 46 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 48 1c 4e f9 <0f> 0b e9 68 ff ff ff e8 3c 1c 4e f9 c6 05 bb 1f d7 05 01 48 c7 c7 RSP: 0018:ffffc90003af7c40 EFLAGS: 00010293 RAX: ffffffff88345848 RBX: 1ffff9200075ef8c RCX: ffff88807f3b3b80 RDX: 0000000000000000 RSI: 00000000ffffffa1 RDI: 0000000000000000 RBP: ffffc90003af7d10 R08: ffff88807f3b3b80 R09: 0000000000000004 R10: 0000000000000004 R11: 0000000000000000 R12: ffff888058f7cbf8 R13: 00000000ffffffa1 R14: ffffc90003af7c80 R15: 0000000000000000 FS: 000055557c4f4500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f05c7b4da08 CR3: 0000000059110000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_link_free kernel/bpf/syscall.c:2769 [inline] bpf_link_put+0x22a/0x2c0 kernel/bpf/syscall.c:2795 bpf_link_release+0x37/0x40 kernel/bpf/syscall.c:2804 __fput+0x22c/0x920 fs/file_table.c:320 task_work_run+0x1d0/0x260 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fdd3c99c819 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:00007ffead2bd458 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007fdd3cc17da0 RCX: 00007fdd3c99c819 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007fdd3cc17da0 R08: 00007fdd3cc16218 R09: 0000000000000000 R10: 00000000003ffd08 R11: 0000000000000246 R12: 000000000002b382 R13: 00007fdd3cc1618c R14: 000000000002b116 R15: 00007ffead2bd560