netlink: 'syz.0.17': attribute type 2 has an invalid length.
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kernel BUG at net/phonet/socket.c:213!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4509 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : pn_socket_autobind net/phonet/socket.c:213 [inline]
pc : pn_socket_sendmsg+0x210/0x214 net/phonet/socket.c:422
lr : pn_socket_autobind net/phonet/socket.c:213 [inline]
lr : pn_socket_sendmsg+0x210/0x214 net/phonet/socket.c:422
sp : ffff800020f37a40
x29: ffff800020f37aa0 x28: ffff7000041e6f64 x27: 1fffe0001e686b43
x26: dfff800000000000 x25: ffff7000041e6f48 x24: ffff800020f37a60
x23: ffff0000f3435a18 x22: 0000000000000000 x21: ffff0000d5048c80
x20: ffff800020f37be0 x19: 0000000000000020 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082dd248 x15: 0000000000000000
x14: 0000000000000001 x13: 1fffe0001aa091a3 x12: 0000000000000000
x11: ff00800011058218 x10: 0000000000000000 x9 : ffff800011058218
x8 : ffff0000d2711c00 x7 : ffff80000fe7f88c x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000
x2 : ffff800020f37880 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 pn_socket_autobind net/phonet/socket.c:213 [inline]
 pn_socket_sendmsg+0x210/0x214 net/phonet/socket.c:422
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 __sys_sendto+0x324/0x440 net/socket.c:2153
 __do_sys_sendto net/socket.c:2165 [inline]
 __se_sys_sendto net/socket.c:2161 [inline]
 __arm64_sys_sendto+0xe4/0x104 net/socket.c:2161
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: aa1603e0 97be769f 17ffffc1 97be762e (d4210000) 
---[ end trace 0000000000000000 ]---