netlink: 'syz.7.1296': attribute type 2 has an invalid length. device .*! entered promiscuous mode BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 8ccd3067 P4D 8ccd3067 PUD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8871 Comm: syz.7.1296 Not tainted 6.1.140-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc90003537218 EFLAGS: 00010246 RAX: 1ffffffff15e99db RBX: 000000000000000f RCX: 0000000000000000 RDX: ffffc900035372c0 RSI: 0000000000000001 RDI: ffff888079498000 RBP: ffffc90003537330 R08: dffffc0000000000 R09: ffffed100f293008 R10: ffffed100f293008 R11: 1ffff1100f293007 R12: ffffe8ffffdba3a0 R13: ffffffff8af4ced8 R14: 0000000000000000 R15: ffff888079498000 FS: 00007fd65077c6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000060384000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: bond_xdp_xmit+0x309/0x520 drivers/net/bonding/bond_main.c:5589 bq_xmit_all+0xc99/0x10d0 kernel/bpf/devmap.c:392 bq_enqueue+0x337/0x3d0 kernel/bpf/devmap.c:457 dev_map_enqueue_multi+0xff9/0x1160 kernel/bpf/devmap.c:656 __xdp_do_redirect_frame net/core/filter.c:4326 [inline] xdp_do_redirect_frame+0x477/0x650 net/core/filter.c:4391 xdp_test_run_batch net/bpf/test_run.c:314 [inline] bpf_test_run_xdp_live+0x9dd/0x1970 net/bpf/test_run.c:362 bpf_prog_test_run_xdp+0x6f1/0xe50 net/bpf/test_run.c:1390 bpf_prog_test_run+0x31e/0x390 kernel/bpf/syscall.c:3685 __sys_bpf+0x593/0x6d0 kernel/bpf/syscall.c:5038 __do_sys_bpf kernel/bpf/syscall.c:5124 [inline] __se_sys_bpf kernel/bpf/syscall.c:5122 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5122 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fd64f98e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd65077c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fd64fbb5fa0 RCX: 00007fd64f98e969 RDX: 0000000000000050 RSI: 0000200000000600 RDI: 000000000000000a RBP: 00007fd64fa10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd64fbb5fa0 R15: 00007ffc59d9e108 Modules linked in: CR2: 0000000000000000 ---[ end trace 0000000000000000 ]--- RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc90003537218 EFLAGS: 00010246 RAX: 1ffffffff15e99db RBX: 000000000000000f RCX: 0000000000000000 RDX: ffffc900035372c0 RSI: 0000000000000001 RDI: ffff888079498000 RBP: ffffc90003537330 R08: dffffc0000000000 R09: ffffed100f293008 R10: ffffed100f293008 R11: 1ffff1100f293007 R12: ffffe8ffffdba3a0 R13: ffffffff8af4ced8 R14: 0000000000000000 R15: ffff888079498000 FS: 00007fd65077c6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000060384000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600