kallsyms: Do not cleanup .llvm.<hash> suffix before sorting symbols
Cleaning up the symbols causes various issues afterwards. Let's sort
the list based on original name.
Signed-off-by: Song Liu <song@kernel.org>
Fixes: 8cc32a9bbf
("kallsyms: strip LTO-only suffixes from promoted global functions")
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Tested-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Acked-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20240807220513.3100483-2-song@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
This commit is contained in:
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@ -5,8 +5,7 @@
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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* Usage: kallsyms [--all-symbols] [--absolute-percpu]
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* [--lto-clang] in.map > out.S
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* Usage: kallsyms [--all-symbols] [--absolute-percpu] in.map > out.S
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*
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* Table compression uses all the unused char codes on the symbols and
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* maps these to the most used substrings (tokens). For instance, it might
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@ -62,7 +61,6 @@ static struct sym_entry **table;
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static unsigned int table_size, table_cnt;
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static int all_symbols;
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static int absolute_percpu;
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static int lto_clang;
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static int token_profit[0x10000];
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@ -73,8 +71,7 @@ static unsigned char best_table_len[256];
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static void usage(void)
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{
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fprintf(stderr, "Usage: kallsyms [--all-symbols] [--absolute-percpu] "
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"[--lto-clang] in.map > out.S\n");
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fprintf(stderr, "Usage: kallsyms [--all-symbols] [--absolute-percpu] in.map > out.S\n");
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exit(1);
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}
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@ -344,25 +341,6 @@ static bool symbol_absolute(const struct sym_entry *s)
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return s->percpu_absolute;
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}
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static void cleanup_symbol_name(char *s)
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{
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char *p;
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/*
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* ASCII[.] = 2e
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* ASCII[0-9] = 30,39
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* ASCII[A-Z] = 41,5a
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* ASCII[_] = 5f
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* ASCII[a-z] = 61,7a
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*
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* As above, replacing the first '.' in ".llvm." with '\0' does not
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* affect the main sorting, but it helps us with subsorting.
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*/
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p = strstr(s, ".llvm.");
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if (p)
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*p = '\0';
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}
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static int compare_names(const void *a, const void *b)
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{
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int ret;
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@ -526,10 +504,6 @@ static void write_src(void)
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output_address(relative_base);
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printf("\n");
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if (lto_clang)
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for (i = 0; i < table_cnt; i++)
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cleanup_symbol_name((char *)table[i]->sym);
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sort_symbols_by_name();
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output_label("kallsyms_seqs_of_names");
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for (i = 0; i < table_cnt; i++)
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@ -807,7 +781,6 @@ int main(int argc, char **argv)
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static const struct option long_options[] = {
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{"all-symbols", no_argument, &all_symbols, 1},
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{"absolute-percpu", no_argument, &absolute_percpu, 1},
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{"lto-clang", no_argument, <o_clang, 1},
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{},
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};
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@ -156,10 +156,6 @@ kallsyms()
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kallsymopt="${kallsymopt} --absolute-percpu"
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fi
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if is_enabled CONFIG_LTO_CLANG; then
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kallsymopt="${kallsymopt} --lto-clang"
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fi
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info KSYMS "${2}.S"
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scripts/kallsyms ${kallsymopt} "${1}" > "${2}.S"
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