diff options
author | Sami Tolvanen <samitolvanen@google.com> | 2021-04-08 11:28:34 -0700 |
---|---|---|
committer | Kees Cook <keescook@chromium.org> | 2021-04-08 16:04:22 -0700 |
commit | 4f0f586bf0c898233d8f316f471a21db2abd522d (patch) | |
tree | 3b3ec78051f5a5d2b96f834347355b1b306026ea /drivers/gpu/drm/radeon/radeon_cs.c | |
parent | bpf: disable CFI in dispatcher functions (diff) | |
download | linux-dev-4f0f586bf0c898233d8f316f471a21db2abd522d.tar.xz linux-dev-4f0f586bf0c898233d8f316f471a21db2abd522d.zip |
treewide: Change list_sort to use const pointers
list_sort() internally casts the comparison function passed to it
to a different type with constant struct list_head pointers, and
uses this pointer to call the functions, which trips indirect call
Control-Flow Integrity (CFI) checking.
Instead of removing the consts, this change defines the
list_cmp_func_t type and changes the comparison function types of
all list_sort() callers to use const pointers, thus avoiding type
mismatches.
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210408182843.1754385-10-samitolvanen@google.com
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_cs.c')
-rw-r--r-- | drivers/gpu/drm/radeon/radeon_cs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c index 35e937d39b51..1a5c3db1d53b 100644 --- a/drivers/gpu/drm/radeon/radeon_cs.c +++ b/drivers/gpu/drm/radeon/radeon_cs.c @@ -393,8 +393,8 @@ int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data) return 0; } -static int cmp_size_smaller_first(void *priv, struct list_head *a, - struct list_head *b) +static int cmp_size_smaller_first(void *priv, const struct list_head *a, + const struct list_head *b) { struct radeon_bo_list *la = list_entry(a, struct radeon_bo_list, tv.head); struct radeon_bo_list *lb = list_entry(b, struct radeon_bo_list, tv.head); |