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| author | Carlos Eduardo Seo <carlos.seo@arm.com> | 2022-03-17 20:51:32 -0300 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2022-08-05 19:45:19 +0100 |
| commit | cec148df6f86bd4cd6c2a4e95bca37840bc90d36 (patch) | |
| tree | 34af2494de0eb87ad8a4bbc7a7e18896f7176ccf | |
| parent | d8173e2496e25ef68e409049eff1b672982af21c (diff) | |
| download | glibc-cec148df6f86bd4cd6c2a4e95bca37840bc90d36.tar.gz glibc-cec148df6f86bd4cd6c2a4e95bca37840bc90d36.tar.xz glibc-cec148df6f86bd4cd6c2a4e95bca37840bc90d36.zip | |
cheri: nptl: Check user provided stack for PCS constraints
In pthread_attr_setstack fail with EINVAL if the input stack does not meet the PCS constraints.
| -rw-r--r-- | nptl/pthread_attr_setstack.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/nptl/pthread_attr_setstack.c b/nptl/pthread_attr_setstack.c index e08b167df6..a0338c2752 100644 --- a/nptl/pthread_attr_setstack.c +++ b/nptl/pthread_attr_setstack.c @@ -19,7 +19,9 @@ #include <limits.h> #include "pthreadP.h" #include <shlib-compat.h> - +#ifdef __CHERI_PURE_CAPABILITY__ +# include <cheri_perms.h> +#endif #ifndef NEW_VERNUM # define NEW_VERNUM GLIBC_2_3_3 @@ -43,6 +45,11 @@ __pthread_attr_setstack (pthread_attr_t *attr, void *stackaddr, EXTRA_PARAM_CHECKS; #endif +#ifdef __CHERI_PURE_CAPABILITY__ + if (!STACK_CAP_CHECK (stackaddr, stacksize)) + return EINVAL; +#endif + iattr->stacksize = stacksize; #if _STACK_GROWS_DOWN iattr->stackaddr = (char *) stackaddr + stacksize; |