From 6a841528d288ac420052f5c98fd426b0fcdc5b52 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 11 Aug 2010 23:04:16 -0600 Subject: param: silence .init.text references from param ops Ideally, we'd check that it was only the "set" function which was __init, and that the permissions were r/o. But that's a little hard. Signed-off-by: Rusty Russell Acked-by: Sam Ravnborg Tested-by: Phil Carmody --- scripts/mod/modpost.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'scripts/mod/modpost.c') diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 1ce655dde99e..b16044002d91 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -1033,6 +1033,13 @@ static const struct sectioncheck *section_mismatch( * fromsec = .data* * atsym =__param* * + * Pattern 1a: + * module_param_call() ops can refer to __init set function if permissions=0 + * The pattern is identified by: + * tosec = .init.text + * fromsec = .data* + * atsym = __param_ops_* + * * Pattern 2: * Many drivers utilise a *driver container with references to * add, remove, probe functions etc. @@ -1067,6 +1074,12 @@ static int secref_whitelist(const struct sectioncheck *mismatch, (strncmp(fromsym, "__param", strlen("__param")) == 0)) return 0; + /* Check for pattern 1a */ + if (strcmp(tosec, ".init.text") == 0 && + match(fromsec, data_sections) && + (strncmp(fromsym, "__param_ops_", strlen("__param_ops_")) == 0)) + return 0; + /* Check for pattern 2 */ if (match(tosec, init_exit_sections) && match(fromsec, data_sections) && -- cgit v1.2.2 From 5003bab82d56754b27be01eef24495a02e00039d Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Wed, 11 Aug 2010 00:42:26 -0700 Subject: fix "scripts/mod/modpost.c: fix memory leak" Fix error introduced by 37ed19d5cce35a40d3913cf9aa208ce9f60db3d7 ("scripts/mod/modpost.c: fix memory leak"). - don't kfree("") - fix one missed conversion Reported-by: Stephen Rothwell Tested-by: Stephen Rothwell Cc: Alexey Fomenko Cc: Trevor Keith Cc: Rusty Russell Cc: Michal Marek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/mod/modpost.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'scripts/mod/modpost.c') diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 1ce655dde99e..7acbdd8fcaed 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -14,6 +14,7 @@ #define _GNU_SOURCE #include #include +#include #include "modpost.h" #include "../../include/generated/autoconf.h" #include "../../include/linux/license.h" @@ -1217,7 +1218,7 @@ static char *sec2annotation(const char *s) strcat(p, " "); return r; /* we leak her but we do not care */ } else { - return ""; + return strdup(""); } } @@ -1352,7 +1353,7 @@ static void report_sec_mismatch(const char *modname, "%s%s so it may be used outside an exit section.\n", from, prl_from, fromsym, from_p, to, prl_to, tosym, to_p, - sec2annotation(tosec), tosym, to_p); + prl_to, tosym, to_p); free(prl_from); free(prl_to); break; -- cgit v1.2.2 From 019fca84e7c4b94817abc77df9081ba208fcc46a Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 12 Aug 2010 16:54:47 +0100 Subject: MN10300: Permit .GCC-command-line sections Permit .GCC-command-line sections in modules. Otherwise modpost says things like: WARNING: drivers/mtd/chips/map_ram.o (.GCC-command-line): unexpected non-allocatable section. Did you forget to use "ax"/"aw" in a .S file? Note that for example contains section definitions for use in .S files. Signed-off-by: David Howells Signed-off-by: Linus Torvalds --- scripts/mod/modpost.c | 1 + 1 file changed, 1 insertion(+) (limited to 'scripts/mod/modpost.c') diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 7acbdd8fcaed..253c107b9a99 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -790,6 +790,7 @@ static const char *section_white_list[] = { ".comment*", ".debug*", + ".GCC-command-line", /* mn10300 */ ".mdebug*", /* alpha, score, mips etc. */ ".pdr", /* alpha, score, mips etc. */ ".stab*", -- cgit v1.2.2