------------[ cut here ]------------
WARNING: CPU: 0 PID: 4618 at net/kcm/kcmsock.c:633 kcm_write_msgs+0xcbc/0xf4c net/kcm/kcmsock.c:-1
Modules linked in:
CPU: 0 PID: 4618 Comm: syz-executor.0 Not tainted 5.15.181-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : kcm_write_msgs+0xcbc/0xf4c net/kcm/kcmsock.c:-1
lr : kcm_write_msgs+0xcb8/0xf4c net/kcm/kcmsock.c:633
sp : ffff80001f1a76a0
x29: ffff80001f1a7720 x28: 00000000ffffffea x27: dfff800000000000
x26: 0000000000198000 x25: ffff0000cee911fc x24: ffff0000ce7ea440
x23: ffff0000d5170dc0 x22: ffff0000cee910c0 x21: ffff0000c849ca00
x20: ffff0000cee90000 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082bf2a4 x15: 0000000000000001
x14: 0000000000ff0100 x13: 1ffff0000282a06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : ffff80001071c918
x8 : ffff0000d8478000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800008044e7c
x2 : 0000000000000006 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 kcm_write_msgs+0xcbc/0xf4c net/kcm/kcmsock.c:-1
 kcm_sendmsg+0x1700/0x1c38 net/kcm/kcmsock.c:1040
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 sock_write_iter+0x23c/0x31c net/socket.c:1079
 call_write_iter include/linux/fs.h:2172 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x7c8/0xa2c fs/read_write.c:594
 ksys_write+0x120/0x210 fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:656
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 16084
hardirqs last  enabled at (16083): [<ffff80000819c354>] __local_bh_enable_ip+0x1f8/0x380 kernel/softirq.c:388
hardirqs last disabled at (16084): [<ffff80001119f244>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (16082): [<ffff80000f672e8c>] spin_unlock_bh include/linux/spinlock.h:408 [inline]
softirqs last  enabled at (16082): [<ffff80000f672e8c>] release_sock+0x1d0/0x258 net/core/sock.c:3277
softirqs last disabled at (16080): [<ffff80000f672cf0>] spin_lock_bh include/linux/spinlock.h:368 [inline]
softirqs last disabled at (16080): [<ffff80000f672cf0>] release_sock+0x34/0x258 net/core/sock.c:3264
---[ end trace af3b7adc2c34b459 ]---
KCM: Hard failure on kcm_write_msgs