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lsm: use unrcu_pointer() for current->cred in security_init() 

We need to directly allocate the cred's LSM state for the initial task
when we initialize the LSM framework.  Unfortunately, this results in a
RCU related type mismatch, use the unrcu_pointer() macro to handle this
a bit more elegantly.

The explicit type casting still remains as we need to work around the
constification of current->cred in this particular case.

Reviewed-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Paul Moore 2025-11-18 19:18:10 -05:00
parent 0e6ebf8778
commit 9a948eefad
1 changed files with 2 additions and 1 deletions
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3
security/lsm_init.c
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@ -467,7 +467,8 @@ int __init security_init(void)
blob_sizes.lbs_inode, 0,
SLAB_PANIC, NULL);
if (lsm_cred_alloc((struct cred __rcu *)current->cred, GFP_KERNEL))
if (lsm_cred_alloc((struct cred *)unrcu_pointer(current->cred),
GFP_KERNEL))
panic("early LSM cred alloc failed\n");
if (lsm_task_alloc(current))
panic("early LSM task alloc failed\n");