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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2022-03-22 22:47:46 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-22 23:57:11 +0100 |
| commit | 6eada26ffc80bfe1f2db088be0c44ec82b5cd3dc (patch) | |
| tree | d01799b985c5c97922113a119368409999da102e /mm/usercopy.c | |
| parent | mm/zswap.c: allow handling just same-value filled pages (diff) | |
| download | linux-6eada26ffc80bfe1f2db088be0c44ec82b5cd3dc.tar.xz linux-6eada26ffc80bfe1f2db088be0c44ec82b5cd3dc.zip | |
mm: remove usercopy_warn()
Users of usercopy_warn() were removed by commit 53944f171a89 ("mm:
remove HARDENED_USERCOPY_FALLBACK")
Remove it.
Link: https://lkml.kernel.org/r/5f26643fc70b05f8455b60b99c30c17d635fa640.1644231910.git.christophe.leroy@csgroup.eu
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Stephen Kitt <steve@sk2.org>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | mm/usercopy.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/mm/usercopy.c b/mm/usercopy.c index d0d268135d96..e7b0cb49daa1 100644 --- a/mm/usercopy.c +++ b/mm/usercopy.c @@ -70,17 +70,6 @@ static noinline int check_stack_object(const void *obj, unsigned long len) * kmem_cache_create_usercopy() function to create the cache (and * carefully audit the whitelist range). */ -void usercopy_warn(const char *name, const char *detail, bool to_user, - unsigned long offset, unsigned long len) -{ - WARN_ONCE(1, "Bad or missing usercopy whitelist? Kernel memory %s attempt detected %s %s%s%s%s (offset %lu, size %lu)!\n", - to_user ? "exposure" : "overwrite", - to_user ? "from" : "to", - name ? : "unknown?!", - detail ? " '" : "", detail ? : "", detail ? "'" : "", - offset, len); -} - void __noreturn usercopy_abort(const char *name, const char *detail, bool to_user, unsigned long offset, unsigned long len) |