------------[ cut here ]------------
WARNING: CPU: 1 PID: 25818 at net/kcm/kcmsock.c:630 kcm_write_msgs+0x982/0x1690 net/kcm/kcmsock.c:630
Modules linked in:
CPU: 1 PID: 25818 Comm: syz-executor.3 Not tainted 6.7.0-rc5-syzkaller-00172-g979e90173af8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:kcm_write_msgs+0x982/0x1690 net/kcm/kcmsock.c:630
Code: 48 c1 e8 03 42 0f b6 04 20 38 c8 7f 08 84 c0 0f 85 c1 0a 00 00 41 c6 47 34 01 4c 89 7c 24 20 e9 93 f8 ff ff e8 6f d2 d7 f7 90 <0f> 0b 90 41 bd ea ff ff ff e8 60 d2 d7 f7 e9 f4 fb ff ff e8 56 d2
RSP: 0018:ffffc90020337908 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff89afb4c7
RDX: ffff888087b95940 RSI: ffffffff89afbb91 RDI: 0000000000000001
RBP: ffff8880a5bb2b40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffff8880b9800000 R12: dffffc0000000000
R13: 0000000000088000 R14: ffff88809ec0c000 R15: ffff8880a0fddc80
FS:  00007fe9cab476c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200005f8 CR3: 000000009fb44000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kcm_sendmsg+0x226f/0x28d0 net/kcm/kcmsock.c:905
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0xd5/0x180 net/socket.c:745
 sock_write_iter+0x29b/0x3d0 net/socket.c:1158
 call_write_iter include/linux/fs.h:2020 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x64f/0xdf0 fs/read_write.c:584
 ksys_write+0x1f0/0x250 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fe9c9e7cba9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe9cab470c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe9c9f9c050 RCX: 00007fe9c9e7cba9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007fe9c9ec847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fe9c9f9c050 R15: 00007ffc4fdf5038
 </TASK>