diff options
| author | Ben Hutchings | 2023-03-22 19:11:45 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-04-06 12:10:53 +0200 |
| commit | 0e7ac17634d2254e0fc65307a5f430e4f1fdb7e9 (patch) | |
| tree | 3ce4a742635b37b1f6c23a926cf877ba8a03b90c | |
| parent | 2269be4951420af24896dd43987333ab35a72fc8 (diff) | |
modpost: Fix processing of CRCs on 32-bit build machines
commit fb27e70f6e408dee5d22b083e7a38a59e6118253 upstream.
modpost now reads CRCs from .*.cmd files, parsing them using strtol().
This is inconsistent with its parsing of Module.symvers and with their
definition as *unsigned* 32-bit values.
strtol() clamps values to [LONG_MIN, LONG_MAX], and when building on a
32-bit system this changes all CRCs >= 0x80000000 to be 0x7fffffff.
Change extract_crcs_for_object() to use strtoul() instead.
Cc: stable@vger.kernel.org
Fixes: f292d875d0dc ("modpost: extract symbol versions from *.cmd files")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | scripts/mod/modpost.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 2c80da0220c3..1dfa80c6b471 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -1722,7 +1722,7 @@ static void extract_crcs_for_object(const char *object, struct module *mod) if (!isdigit(*p)) continue; /* skip this line */ - crc = strtol(p, &p, 0); + crc = strtoul(p, &p, 0); if (*p != '\n') continue; /* skip this line */ |