------------[ cut here ]------------
kmem_cache of name '9p-fcall-cache' already exists
WARNING: CPU: 0 PID: 7137 at mm/slab_common.c:108 kmem_cache_sanity_check mm/slab_common.c:107 [inline]
WARNING: CPU: 0 PID: 7137 at mm/slab_common.c:108 kmem_cache_create_usercopy+0xb6/0x370 mm/slab_common.c:311
Modules linked in:
CPU: 0 UID: 0 PID: 7137 Comm: syz.0.353 Not tainted 6.11.0-rc5-next-20240827-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:kmem_cache_sanity_check mm/slab_common.c:107 [inline]
RIP: 0010:kmem_cache_create_usercopy+0xb6/0x370 mm/slab_common.c:311
Code: 48 8b 6d 00 48 39 dd 74 25 48 8b 7d f8 4c 89 f6 e8 ff 16 dd 09 85 c0 75 e7 90 48 c7 c7 38 0a 0a 8e 4c 89 f6 e8 9b c1 79 ff 90 <0f> 0b 90 90 4c 89 f7 be 20 00 00 00 e8 59 18 dd 09 48 85 c0 0f 85
RSP: 0018:ffffc900040d77a8 EFLAGS: 00010246

RAX: a6f35bdaed914100 RBX: ffffffff8ea1ba80 RCX: 0000000000040000
RDX: ffffc9000a79c000 RSI: 00000000000040e7 RDI: 00000000000040e8
RBP: ffff88814b3fece8 R08: ffffffff8155a5b2 R09: fffffbfff1cfa364
R10: dffffc0000000000 R11: fffffbfff1cfa364 R12: 0000000000007b09
R13: 0000000000000000 R14: ffffffff8d2d3620 R15: 000000000000000b
FS:  00007f89ae8f06c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff15c76f5d0 CR3: 000000002a1fa000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 p9_client_create+0xb0b/0x1040 net/9p/client.c:1042