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authorMichael Neuling <mikey@neuling.org>2013-03-11 16:42:49 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-03-17 12:35:06 +1100
commit2bb78efab42cf4ee7a7184f7d2da1b7cb331b479 (patch)
treed9304b9d04ae8db7379fa5c84466fac24cae1917 /arch/powerpc
parent1674400aaee5b466c595a8fc310488263ce888c7 (diff)
powerpc/ptrace: Fix brk.len used uninitialised
With some CONFIGS it's possible that in ppc_set_hwdebug, brk.len is uninitialised before being used. It has been reported that GCC 4.2 will produce the following error in this case: arch/powerpc/kernel/ptrace.c:1479: warning: 'brk.len' is used uninitialized in this function arch/powerpc/kernel/ptrace.c:1381: note: 'brk.len' was declared here This patch corrects this. Signed-off-by: Michael Neuling <mikey@neuling.org> Reported-by: Philippe De Muyter <phdm@macqel.be> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/ptrace.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 245c1b6a085..f9b30c68ba4 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -1428,6 +1428,7 @@ static long ppc_set_hwdebug(struct task_struct *child,
brk.address = bp_info->addr & ~7UL;
brk.type = HW_BRK_TYPE_TRANSLATE;
+ brk.len = 8;
if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_READ)
brk.type |= HW_BRK_TYPE_READ;
if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_WRITE)