search for: memcg_deactivate_kmem_cach

...sed -i 's/\bkzfree\b/kfree_sensitive/' > > followed by some editing of the kfree_sensitive() kerneldoc and adding > a kzfree backward compatibility macro in slab.h. > > ... > > --- a/include/linux/slab.h > +++ b/include/linux/slab.h > @@ -186,10 +186,12 @@ void memcg_deactivate_kmem_caches(struct mem_cgroup *, struct mem_cgroup *); > */ > void * __must_check krealloc(const void *, size_t, gfp_t); > void kfree(const void *); > -void kzfree(const void *); > +void kfree_sensitive(const void *); > size_t __ksize(const void *); > size_t ksize(const void *); &g...

v5: - Break the btrfs patch out as a separate patch to be processed independently. - Update the commit log of patch 1 to make it less scary. - Add a kzfree backward compatibility macro in patch 2. v4: - Break out the memzero_explicit() change as suggested by Dan Carpenter so that it can be backported to stable. - Drop the "crypto: Remove unnecessary

...q) { - kzfree(req); + kfree_sensitive(req); } static inline void skcipher_request_zero(struct skcipher_request *req) diff --git a/include/linux/slab.h b/include/linux/slab.h index 6d454886bcaf..0884d82c55ee 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -186,10 +186,12 @@ void memcg_deactivate_kmem_caches(struct mem_cgroup *, struct mem_cgroup *); */ void * __must_check krealloc(const void *, size_t, gfp_t); void kfree(const void *); -void kzfree(const void *); +void kfree_sensitive(const void *); size_t __ksize(const void *); size_t ksize(const void *); +#define kzfree(x) kfree_sensitive(...

...req) { - kzfree(req); + kfree_sensitive(req); } static inline void skcipher_request_zero(struct skcipher_request *req) diff --git a/include/linux/slab.h b/include/linux/slab.h index 6d454886bcaf..7f2018943997 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -186,7 +186,7 @@ void memcg_deactivate_kmem_caches(struct mem_cgroup *, struct mem_cgroup *); */ void * __must_check krealloc(const void *, size_t, gfp_t); void kfree(const void *); -void kzfree(const void *); +void kfree_sensitive(const void *); size_t __ksize(const void *); size_t ksize(const void *); diff --git a/lib/mpi/mpiutil.c b/li...

...req) { - kzfree(req); + kfree_sensitive(req); } static inline void skcipher_request_zero(struct skcipher_request *req) diff --git a/include/linux/slab.h b/include/linux/slab.h index 6d454886bcaf..7f2018943997 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -186,7 +186,7 @@ void memcg_deactivate_kmem_caches(struct mem_cgroup *, struct mem_cgroup *); */ void * __must_check krealloc(const void *, size_t, gfp_t); void kfree(const void *); -void kzfree(const void *); +void kfree_sensitive(const void *); size_t __ksize(const void *); size_t ksize(const void *); diff --git a/lib/mpi/mpiutil.c b/li...

v4: - Break out the memzero_explicit() change as suggested by Dan Carpenter so that it can be backported to stable. - Drop the "crypto: Remove unnecessary memzero_explicit()" patch for now as there can be a bit more discussion on what is best. It will be introduced as a separate patch later on after this one is merged. This patchset makes a global rename of the kzfree()

v4: - Break out the memzero_explicit() change as suggested by Dan Carpenter so that it can be backported to stable. - Drop the "crypto: Remove unnecessary memzero_explicit()" patch for now as there can be a bit more discussion on what is best. It will be introduced as a separate patch later on after this one is merged. This patchset makes a global rename of the kzfree()

This patchset makes a global rename of the kzfree() to kfree_sensitive() to highlight the fact buffer clearing is only needed if the data objects contain sensitive information like encrpytion key. The fact that kzfree() uses memset() to do the clearing isn't totally safe either as compiler may compile out the clearing in their optimizer. Instead, the new kfree_sensitive() uses