EXT4-fs (loop3): mounted filesystem without journal. Quota mode: writeback. netlink: 'syz.3.269': attribute type 2 has an invalid length. ------------[ cut here ]------------ kernel BUG at net/phonet/socket.c:213! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 5258 Comm: syz.3.269 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 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 : ffff800020f37880 x29: ffff800020f378e0 x28: 0000000000000000 x27: 1fffe0001c06fb43 x26: dfff800000000000 x25: ffff7000041e6f10 x24: ffff800020f378a0 x23: ffff0000e037da18 x22: 0000000000000000 x21: ffff0000cb798640 x20: ffff800020f37c20 x19: 0000000000000060 x18: 0000000000000000 x17: 0000000000000000 x16: ffff8000082d93d8 x15: 0000000000000002 x14: 0000000000000001 x13: 1fffe000196f30db x12: 0000000000080000 x11: 000000000000032c x10: ffff80002922c000 x9 : ffff800010f16ffc x8 : 000000000000032d x7 : ffff80000fd55d00 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff800020f376a0 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_sendmsg+0x5c8/0x938 net/socket.c:2518 ___sys_sendmsg net/socket.c:2572 [inline] __sys_sendmsg+0x288/0x374 net/socket.c:2601 __do_sys_sendmsg net/socket.c:2610 [inline] __se_sys_sendmsg net/socket.c:2608 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2608 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 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 97c37a51 17ffffc1 97c379d6 (d4210000) ---[ end trace 0000000000000000 ]---