summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
authorDavid Rivshin <DRivshin@allworx.com>2018-04-25 21:15:01 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-07-03 11:21:29 +0200
commit523dc24bc52fa17adcd798e4a5b65b527e192f2b (patch)
tree00751d381ed1debca74625822dd4ef474b6e2b05 /arch
parent4c0e24ab739792480a4b6e6f8f2c0d30eb322beb (diff)
ARM: 8764/1: kgdb: fix NUMREGBYTES so that gdb_regs[] is the correct size
commit 76ed0b803a2ab793a1b27d1dfe0de7955282cd34 upstream. NUMREGBYTES (which is used as the size for gdb_regs[]) is incorrectly based on DBG_MAX_REG_NUM instead of GDB_MAX_REGS. DBG_MAX_REG_NUM is the number of total registers, while GDB_MAX_REGS is the number of 'unsigned longs' it takes to serialize those registers. Since FP registers require 3 'unsigned longs' each, DBG_MAX_REG_NUM is smaller than GDB_MAX_REGS. This causes GDB 8.0 give the following error on connect: "Truncated register 19 in remote 'g' packet" This also causes the register serialization/deserialization logic to overflow gdb_regs[], overwriting whatever follows. Fixes: 834b2964b7ab ("kgdb,arm: fix register dump") Cc: <stable@vger.kernel.org> # 2.6.37+ Signed-off-by: David Rivshin <drivshin@allworx.com> Acked-by: Rabin Vincent <rabin@rab.in> Tested-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/include/asm/kgdb.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/include/asm/kgdb.h b/arch/arm/include/asm/kgdb.h
index 0a9d5dd93294..6949c7d4481c 100644
--- a/arch/arm/include/asm/kgdb.h
+++ b/arch/arm/include/asm/kgdb.h
@@ -76,7 +76,7 @@ extern int kgdb_fault_expected;
#define KGDB_MAX_NO_CPUS 1
#define BUFMAX 400
-#define NUMREGBYTES (DBG_MAX_REG_NUM << 2)
+#define NUMREGBYTES (GDB_MAX_REGS << 2)
#define NUMCRITREGBYTES (32 << 2)
#define _R0 0