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orangefs: add usercopy whitelist to orangefs_op_cache

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orangefs_op_cache is created with kmem_cache_create(), which provides
no usercopy whitelist. orangefs_devreq_read() copies the tag and upcall
fields directly from slab objects to userspace via copy_to_user(). With
CONFIG_HARDENED_USERCOPY enabled, this triggers usercopy_abort().

Switch to kmem_cache_create_usercopy() with a whitelist covering the
tag and upcall fields, matching the pattern already used by
orangefs_inode_cache in super.c.

Signed-off-by: Ziyi Guo <n7l8m4@u.northwestern.edu>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
This commit is contained in:
Ziyi Guo 2026-02-12 02:08:06 +00:00 committed by Mike Marshall
parent dbd6a82305
commit f855f4ab12
1 changed files with 5 additions and 1 deletions
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6
fs/orangefs/orangefs-cache.c
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@ -19,10 +19,14 @@ static struct kmem_cache *op_cache;
int op_cache_initialize(void)
{
op_cache = kmem_cache_create("orangefs_op_cache",
op_cache = kmem_cache_create_usercopy("orangefs_op_cache",
sizeof(struct orangefs_kernel_op_s),
0,
0,
offsetof(struct orangefs_kernel_op_s, tag),
offsetof(struct orangefs_kernel_op_s, upcall) +
sizeof(struct orangefs_upcall_s) -
offsetof(struct orangefs_kernel_op_s, tag),
NULL);
if (!op_cache) {