If CONFIG_KGDB_KDB is set and CONFIG_KALLSYMS is not set the kernel will fail to build with the error:
kernel/built-in.o: In function `kallsyms_symbol_next': kernel/debug/kdb/kdb_support.c:237: undefined reference to `kdb_walk_kallsyms' kernel/built-in.o: In function `kallsyms_symbol_complete': kernel/debug/kdb/kdb_support.c:193: undefined reference to `kdb_walk_kallsyms' The kdb_walk_kallsyms needs a #ifdef proper header to match the C implementation. This patch also fixes the compiler warnings in kdb_support.c when compiling without CONFIG_KALLSYMS set. The compiler warnings are a result of the kallsyms_lookup() macro not initializing the two of the pass by reference variables. Signed-off-by: Jason Wessel <[email protected]> Reported-by: Michal Simek <[email protected]> --- kernel/debug/kdb/kdb_private.h | 7 +++++++ kernel/debug/kdb/kdb_support.c | 4 ++-- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/kernel/debug/kdb/kdb_private.h b/kernel/debug/kdb/kdb_private.h index c438f54..be775f7 100644 --- a/kernel/debug/kdb/kdb_private.h +++ b/kernel/debug/kdb/kdb_private.h @@ -255,7 +255,14 @@ extern void kdb_ps1(const struct task_struct *p); extern void kdb_print_nameval(const char *name, unsigned long val); extern void kdb_send_sig_info(struct task_struct *p, struct siginfo *info); extern void kdb_meminfo_proc_show(void); +#ifdef CONFIG_KALLSYMS extern const char *kdb_walk_kallsyms(loff_t *pos); +#else /* ! CONFIG_KALLSYMS */ +static inline const char *kdb_walk_kallsyms(loff_t *pos) +{ + return NULL; +} +#endif /* ! CONFIG_KALLSYMS */ extern char *kdb_getstr(char *, size_t, char *); /* Defines for kdb_symbol_print */ diff --git a/kernel/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c index 45344d5..6b2485d 100644 --- a/kernel/debug/kdb/kdb_support.c +++ b/kernel/debug/kdb/kdb_support.c @@ -82,8 +82,8 @@ static char *kdb_name_table[100]; /* arbitrary size */ int kdbnearsym(unsigned long addr, kdb_symtab_t *symtab) { int ret = 0; - unsigned long symbolsize; - unsigned long offset; + unsigned long symbolsize = 0; + unsigned long offset = 0; #define knt1_size 128 /* must be >= kallsyms table size */ char *knt1 = NULL; -- 1.6.3.3 ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ Kgdb-bugreport mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/kgdb-bugreport
