From c07d35338081d107e57cf37572d8cc931a8e32e2 Mon Sep 17 00:00:00 2001 From: Daniel Thompson Date: Mon, 2 Mar 2015 14:13:36 +0000 Subject: [PATCH 1/2] kdb: Fix handling of kallsyms_symbol_next() return value kallsyms_symbol_next() returns a boolean (true on success). Currently kdb_read() tests the return value with an inequality that unconditionally evaluates to true. This is fixed in the obvious way and, since the conditional branch is supposed to be unreachable, we also add a WARN_ON(). Reported-by: Dan Carpenter Signed-off-by: Daniel Thompson Cc: linux-stable Signed-off-by: Jason Wessel --- kernel/debug/kdb/kdb_io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c index e74be38245ad..ed5d34925ad0 100644 --- a/kernel/debug/kdb/kdb_io.c +++ b/kernel/debug/kdb/kdb_io.c @@ -350,7 +350,7 @@ poll_again: } kdb_printf("\n"); for (i = 0; i < count; i++) { - if (kallsyms_symbol_next(p_tmp, i) < 0) + if (WARN_ON(!kallsyms_symbol_next(p_tmp, i))) break; kdb_printf("%s ", p_tmp); *(p_tmp + len) = '\0'; From 4e23f78c74934e8ea624b59df58e646e0657608a Mon Sep 17 00:00:00 2001 From: Jason Wessel Date: Tue, 5 Dec 2017 13:26:27 -0600 Subject: [PATCH 2/2] kgdb/kdb/debug_core: Add co-maintainer Daniel Thompson Signed-off-by: Jason Wessel --- MAINTAINERS | 1 + 1 file changed, 1 insertion(+) diff --git a/MAINTAINERS b/MAINTAINERS index 2811a211632c..74be63be6197 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7659,6 +7659,7 @@ F: security/keys/ KGDB / KDB /debug_core M: Jason Wessel +M: Daniel Thompson W: http://kgdb.wiki.kernel.org/ L: kgdb-bugreport@lists.sourceforge.net T: git git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb.git