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coredump: Use __counted_by_ptr for struct core_name::corename

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Use the __counted_by annotation now available for struct pointer
members, __counted_by_ptr(). Move assignments to immediately
after allocation.

Link: https://patch.msgid.link/20251020220118.1226740-3-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
This commit is contained in:
Kees Cook 2025-10-20 15:01:17 -07:00
parent a120a832e3
commit fac4ab5cd0
1 changed files with 4 additions and 4 deletions
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8
fs/coredump.c
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@ -92,7 +92,7 @@ enum coredump_type_t {
};
struct core_name {
char *corename;
char *corename __counted_by_ptr(size);
int used, size;
unsigned int core_pipe_limit;
bool core_dumped;
@ -106,15 +106,15 @@ static int expand_corename(struct core_name *cn, int size)
size = kmalloc_size_roundup(size);
corename = krealloc(cn->corename, size, GFP_KERNEL);
if (!corename)
return -ENOMEM;
cn->corename = corename;
cn->size = size;
if (size > core_name_size) /* racy but harmless */
core_name_size = size;
cn->size = size;
cn->corename = corename;
return 0;
}