This is a note to let you know that I've just added the patch titled
kdb: Fix handling of kallsyms_symbol_next() return value
to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: kdb-fix-handling-of-kallsyms_symbol_next-return-value.patch and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From c07d35338081d107e57cf37572d8cc931a8e32e2 Mon Sep 17 00:00:00 2001
From: Daniel Thompson daniel.thompson@linaro.org Date: Mon, 2 Mar 2015 14:13:36 +0000 Subject: kdb: Fix handling of kallsyms_symbol_next() return value
From: Daniel Thompson daniel.thompson@linaro.org
commit c07d35338081d107e57cf37572d8cc931a8e32e2 upstream.
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 dan.carpenter@oracle.com Signed-off-by: Daniel Thompson daniel.thompson@linaro.org Signed-off-by: Jason Wessel jason.wessel@windriver.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- kernel/debug/kdb/kdb_io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- 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';
Patches currently in stable-queue which might be from daniel.thompson@linaro.org are
queue-4.14/kdb-fix-handling-of-kallsyms_symbol_next-return-value.patch