At the moment, Rust symbols may reach up to 300 in length.
Setting 512 as the maximum seems like a reasonable choice to
keep some headroom.

Co-developed-by: Alex Gaynor <redacted>
Signed-off-by: Alex Gaynor <redacted>
Co-developed-by: Geoffrey Thomas <redacted>
Signed-off-by: Geoffrey Thomas <redacted>
Co-developed-by: Finn Behrens <redacted>
Signed-off-by: Finn Behrens <redacted>
Co-developed-by: Adam Bratschi-Kaye <redacted>
Signed-off-by: Adam Bratschi-Kaye <redacted>
Co-developed-by: Wedson Almeida Filho <redacted>
Signed-off-by: Wedson Almeida Filho <redacted>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
 include/linux/kallsyms.h            | 2 +-
 kernel/livepatch/core.c             | 4 ++--
 scripts/kallsyms.c                  | 2 +-
 tools/include/linux/kallsyms.h      | 2 +-
 tools/include/linux/lockdep.h       | 2 +-
 tools/lib/perf/include/perf/event.h | 2 +-
 tools/lib/symbol/kallsyms.h         | 2 +-
 7 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h
index 465060acc98..5cdc6903abc 100644
--- a/include/linux/kallsyms.h
+++ b/include/linux/kallsyms.h

@@ -14,7 +14,7 @@

 #include <asm/sections.h>

-#define KSYM_NAME_LEN 128
+#define KSYM_NAME_LEN 512
 #define KSYM_SYMBOL_LEN (sizeof("%s+%#lx/%#lx [%s]") + (KSYM_NAME_LEN - 1) + \
                         2*(BITS_PER_LONG*3/10) + (MODULE_NAME_LEN - 1) + 1)

diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index 335d988bd81..73874e5edfd 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c

@@ -213,7 +213,7 @@ static int klp_resolve_symbols(Elf64_Shdr *sechdrs, const char *strtab,
         * we use the smallest/strictest upper bound possible (56, based on
         * the current definition of MODULE_NAME_LEN) to prevent overflows.
         */
-       BUILD_BUG_ON(MODULE_NAME_LEN < 56 || KSYM_NAME_LEN != 128);
+       BUILD_BUG_ON(MODULE_NAME_LEN < 56 || KSYM_NAME_LEN != 512);

        relas = (Elf_Rela *) relasec->sh_addr;
        /* For each rela in this klp relocation section */

@@ -227,7 +227,7 @@ static int klp_resolve_symbols(Elf64_Shdr *sechdrs, const char *strtab,

                /* Format: .klp.sym.sym_objname.sym_name,sympos */
                cnt = sscanf(strtab + sym->st_name,
-                            ".klp.sym.%55[^.].%127[^,],%lu",
+                            ".klp.sym.%55[^.].%511[^,],%lu",
                             sym_objname, sym_name, &sympos);
                if (cnt != 3) {
                        pr_err("symbol %s has an incorrectly formatted name\n",

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index bcdabee13aa..9bab5f55ade 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c

@@ -27,7 +27,7 @@

 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))

-#define KSYM_NAME_LEN          128
+#define KSYM_NAME_LEN          512

 struct sym_entry {
        unsigned long long addr;

diff --git a/tools/include/linux/kallsyms.h b/tools/include/linux/kallsyms.h
index efb6c3f5f2a..5a37ccbec54 100644
--- a/tools/include/linux/kallsyms.h
+++ b/tools/include/linux/kallsyms.h

@@ -6,7 +6,7 @@
 #include <stdio.h>
 #include <unistd.h>

-#define KSYM_NAME_LEN 128
+#define KSYM_NAME_LEN 512

 struct module;

diff --git a/tools/include/linux/lockdep.h b/tools/include/linux/lockdep.h
index e56997288f2..d9c163f3ab2 100644
--- a/tools/include/linux/lockdep.h
+++ b/tools/include/linux/lockdep.h

@@ -47,7 +47,7 @@ static inline int debug_locks_off(void)

 #define task_pid_nr(tsk) ((tsk)->pid)

-#define KSYM_NAME_LEN 128
+#define KSYM_NAME_LEN 512
 #define printk(...) dprintf(STDOUT_FILENO, __VA_ARGS__)
 #define pr_err(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
 #define pr_warn pr_err

diff --git a/tools/lib/perf/include/perf/event.h b/tools/lib/perf/include/perf/event.h
index 4d0c02ba3f7..095d60144a7 100644
--- a/tools/lib/perf/include/perf/event.h
+++ b/tools/lib/perf/include/perf/event.h

@@ -95,7 +95,7 @@ struct perf_record_throttle {
 };

 #ifndef KSYM_NAME_LEN
-#define KSYM_NAME_LEN 256
+#define KSYM_NAME_LEN 512
 #endif

 struct perf_record_ksymbol {

diff --git a/tools/lib/symbol/kallsyms.h b/tools/lib/symbol/kallsyms.h
index 72ab9870454..542f9b059c3 100644
--- a/tools/lib/symbol/kallsyms.h
+++ b/tools/lib/symbol/kallsyms.h

@@ -7,7 +7,7 @@
 #include <linux/types.h>

 #ifndef KSYM_NAME_LEN
-#define KSYM_NAME_LEN 256
+#define KSYM_NAME_LEN 512
 #endif

 static inline u8 kallsyms2elf_binding(char type)
--

2.32.0