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| author | Alan Modra <amodra@gmail.com> | 2023-03-29 22:31:15 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2023-03-30 15:18:02 +1030 |
| commit | ea7672c10e0b762c02fd40ce94d490b56bc14675 (patch) | |
| tree | a0a5df4f73e69223d1b8e6b569b09dcdae091561 /bfd | |
| parent | 45fec14c029491329d769eae29021b4cb0cdd2c3 (diff) | |
| download | gdb-ea7672c10e0b762c02fd40ce94d490b56bc14675.zip gdb-ea7672c10e0b762c02fd40ce94d490b56bc14675.tar.gz gdb-ea7672c10e0b762c02fd40ce94d490b56bc14675.tar.bz2 | |
Fix memory leak in bfd_get_debug_link_info_1
* opncls.c (bfd_get_alt_debug_link_info): Don't bother freeing
after bfd_malloc_and_get_section failure.
(get_build_id): Likewise.
(bfd_get_debug_link_info_1): Likewise. Free section contents
when crc not present.
* section.c (bfd_malloc_and_get_section): Document that the
buffer is NULL on error return.
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/opncls.c | 20 | ||||
| -rw-r--r-- | bfd/section.c | 2 |
2 files changed, 9 insertions, 13 deletions
diff --git a/bfd/opncls.c b/bfd/opncls.c index abea464..81e1244 100644 --- a/bfd/opncls.c +++ b/bfd/opncls.c @@ -1211,10 +1211,7 @@ bfd_get_debug_link_info_1 (bfd *abfd, void *crc32_out) return NULL; if (!bfd_malloc_and_get_section (abfd, sect, &contents)) - { - free (contents); - return NULL; - } + return NULL; /* CRC value is stored after the filename, aligned up to 4 bytes. */ name = (char *) contents; @@ -1222,7 +1219,10 @@ bfd_get_debug_link_info_1 (bfd *abfd, void *crc32_out) crc_offset = strnlen (name, size) + 1; crc_offset = (crc_offset + 3) & ~3; if (crc_offset + 4 > size) - return NULL; + { + free (name); + return NULL; + } *crc32 = bfd_get_32 (abfd, contents + crc_offset); return name; @@ -1297,10 +1297,7 @@ bfd_get_alt_debug_link_info (bfd * abfd, bfd_size_type *buildid_len, return NULL; if (!bfd_malloc_and_get_section (abfd, sect, & contents)) - { - free (contents); - return NULL; - } + return NULL; /* BuildID value is stored after the filename. */ name = (char *) contents; @@ -1817,10 +1814,7 @@ get_build_id (bfd *abfd) } if (!bfd_malloc_and_get_section (abfd, sect, & contents)) - { - free (contents); - return NULL; - } + return NULL; /* FIXME: Paranoia - allow for compressed build-id sections. Maybe we should complain if this size is different from diff --git a/bfd/section.c b/bfd/section.c index 3b1993b..1e7e8ac 100644 --- a/bfd/section.c +++ b/bfd/section.c @@ -1600,6 +1600,8 @@ SYNOPSIS DESCRIPTION Read all data from @var{section} in BFD @var{abfd} into a buffer, *@var{buf}, malloc'd by this function. + Return @code{true} on success, @code{false} on failure in which + case *@var{buf} will be NULL. */ bool |