From: Greg Kroah-Hartman gregkh@linuxfoundation.org
commit 93dd04ab0b2b32ae6e70284afc764c577156658e upstream.
Commit c37495d6254c ("slab: add __alloc_size attributes for better bounds checking") added __alloc_size attributes to a bunch of kmalloc function prototypes. Unfortunately the change to __kmalloc_track_caller seems to cause clang to generate broken code and the first time this is called when booting, the box will crash.
While the compiler problems are being reworked and attempted to be solved [1], let's just drop the attribute to solve the issue now. Once it is resolved it can be added back.
[1] https://github.com/ClangBuiltLinux/linux/issues/1599
Fixes: c37495d6254c ("slab: add __alloc_size attributes for better bounds checking") Cc: stable stable@vger.kernel.org Cc: Kees Cook keescook@chromium.org Cc: Daniel Micay danielmicay@gmail.com Cc: Nick Desaulniers ndesaulniers@google.com Cc: Christoph Lameter cl@linux.com Cc: Pekka Enberg penberg@kernel.org Cc: Joonsoo Kim iamjoonsoo.kim@lge.com Cc: Andrew Morton akpm@linux-foundation.org Cc: Vlastimil Babka vbabka@suse.cz Cc: Nathan Chancellor nathan@kernel.org Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org Cc: llvm@lists.linux.dev Acked-by: Nick Desaulniers ndesaulniers@google.com Acked-by: David Rientjes rientjes@google.com Acked-by: Kees Cook keescook@chromium.org Signed-off-by: Vlastimil Babka vbabka@suse.cz Link: https://lore.kernel.org/r/20220218131358.3032912-1-gregkh@linuxfoundation.or... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- include/linux/slab.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
--- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -669,8 +669,7 @@ static inline __alloc_size(1, 2) void *k * allocator where we care about the real place the memory allocation * request comes from. */ -extern void *__kmalloc_track_caller(size_t size, gfp_t flags, unsigned long caller) - __alloc_size(1); +extern void *__kmalloc_track_caller(size_t size, gfp_t flags, unsigned long caller); #define kmalloc_track_caller(size, flags) \ __kmalloc_track_caller(size, flags, _RET_IP_)