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| 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 /net/tipc/name_table.c | |
| parent | 9f5b4009980f369acb80b72235b2d66c3fd6eca6 (diff) | |
| download | linux-4f0f586bf0c898233d8f316f471a21db2abd522d.tar.gz | |
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 'net/tipc/name_table.c')
| -rw-r--r-- | net/tipc/name_table.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c index ee5ac40ea2b6..f8141443f2e2 100644 --- a/net/tipc/name_table.c +++ b/net/tipc/name_table.c @@ -397,8 +397,8 @@ static struct publication *tipc_service_remove_publ(struct service_range *sr, * Code reused: time_after32() for the same purpose */ #define publication_after(pa, pb) time_after32((pa)->id, (pb)->id) -static int tipc_publ_sort(void *priv, struct list_head *a, - struct list_head *b) +static int tipc_publ_sort(void *priv, const struct list_head *a, + const struct list_head *b) { struct publication *pa, *pb; |