netlink: 'syz.1.1666': attribute type 10 has an invalid length. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 12193 at kernel/kcov.c:872 kcov_remote_start+0x542/0x7d0 kernel/kcov.c:872 Modules linked in: CPU: 1 UID: 0 PID: 12193 Comm: syz.1.1666 Not tainted 6.15.0-rc1-syzkaller-00301-g3bde70a2c827 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:kcov_remote_start+0x542/0x7d0 kernel/kcov.c:872 Code: 4c 89 ff be 03 00 00 00 e8 4b 84 41 03 e9 04 fb ff ff e8 c1 4e 6d 0a 41 f7 c6 00 02 00 00 0f 84 f2 fa ff ff e9 7f fc ff ff 90 <0f> 0b 90 e8 d6 6b 6d 0a 89 c0 48 c7 c7 68 43 69 93 48 03 3c c5 10 RSP: 0018:ffffc9000538e3f0 EFLAGS: 00010002 RAX: 0000000080000200 RBX: ffff88801f72bc00 RCX: 0000000000000002 RDX: 0000000000030000 RSI: ffffffff8e4fde5e RDI: ffffffff8ca1b4a0 RBP: 0000000000000000 R08: ffffc9000538e160 R09: 0000000000000020 R10: 0000000000000000 R11: ffffffff819f6e30 R12: ffffffff81c35ed7 R13: dffffc0000000000 R14: 0000000000000246 R15: ffff8880b8728368 FS: 0000000000000000(0000) GS:ffff888125094000(0063) knlGS:00000000f5066b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000008010c018 CR3: 0000000035fc4000 CR4: 00000000003526f0 Call Trace: kcov_remote_start_common include/linux/kcov.h:50 [inline] ieee80211_rx_list+0x53e/0x3490 net/mac80211/rx.c:5398 ieee80211_rx_napi+0x187/0x3c0 net/mac80211/rx.c:5439 ieee80211_rx include/net/mac80211.h:5179 [inline] ieee80211_handle_queued_frames+0xe7/0x1e0 net/mac80211/main.c:441 ieee80211_stop_device+0x3f/0xf0 net/mac80211/util.c:1574 ieee80211_do_stop+0x1dfa/0x23a0 net/mac80211/iface.c:715 ieee80211_stop+0x43b/0x490 net/mac80211/iface.c:775 __dev_close_many+0x3d7/0x760 net/core/dev.c:1700 __dev_close net/core/dev.c:1712 [inline] __dev_change_flags+0x310/0x700 net/core/dev.c:9362 netif_change_flags+0x8b/0x1a0 net/core/dev.c:9427 do_setlink+0xee3/0x4390 net/core/rtnetlink.c:3152 rtnl_changelink net/core/rtnetlink.c:3772 [inline] __rtnl_newlink net/core/rtnetlink.c:3931 [inline] rtnl_newlink+0x17e2/0x1fe0 net/core/rtnetlink.c:4068 rtnetlink_rcv_msg+0x80f/0xd70 net/core/rtnetlink.c:6958 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 ____sys_sendmsg+0x523/0x860 net/socket.c:2566 ___sys_sendmsg net/socket.c:2620 [inline] __sys_sendmsg+0x271/0x360 net/socket.c:2652 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xb4/0x110 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:331 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7f46579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f506655c EFLAGS: 00000206 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 000000000000000b RCX: 00000000800003c0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 90 nop 33: 90 nop 34: 90 nop 35: 90 nop 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop