linux-kernel - [PATCH 2/2] powerpc/xmon: use KSYM_NAME

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Date:   Mon, 29 May 2023 16:43:37 +0530
From:   Maninder Singh <maninder1.s@...sung.com>
To:     bcain@...cinc.com, mpe@...erman.id.au, npiggin@...il.com,
        christophe.leroy@...roup.eu, keescook@...omium.org,
        nathanl@...ux.ibm.com, ustavoars@...nel.org, alex.gaynor@...il.com,
        gary@...yguo.net, ojeda@...nel.org, pmladek@...e.com,
        wedsonaf@...gle.com
Cc:     linux-hexagon@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org,
        Maninder Singh <maninder1.s@...sung.com>,
        Onkarnath <onkarnath.1@...sung.com>
Subject: [PATCH 2/2] powerpc/xmon: use KSYM_NAME_LEN in array size

kallsyms_lookup which in turn calls for kallsyms_lookup_buildid()
writes on index "KSYM_NAME_LEN - 1".

Thus array size should be KSYM_NAME_LEN.

for powerpc it was defined as "128" directly.
and commit '61968dbc2d5d' changed define value to 512,
So both were missed to update with new size.

Fixes: 61968dbc2d5d ("kallsyms: increase maximum kernel symbol length to 512")

Co-developed-by: Onkarnath <onkarnath.1@...sung.com>
Signed-off-by: Onkarnath <onkarnath.1@...sung.com>
Signed-off-by: Maninder Singh <maninder1.s@...sung.com>
---
 arch/powerpc/xmon/xmon.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 728d3c257e4a..70c4c59a1a8f 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -88,7 +88,7 @@ static unsigned long ndump = 64;
 static unsigned long nidump = 16;
 static unsigned long ncsum = 4096;
 static int termch;
-static char tmpstr[128];
+static char tmpstr[KSYM_NAME_LEN];
 static int tracing_enabled;
 
 static long bus_error_jmp[JMP_BUF_LEN];
-- 
2.17.1