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Commit 2bb78efa authored by Michael Neuling's avatar Michael Neuling Committed by Benjamin Herrenschmidt
Browse files

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: default avatarMichael Neuling <mikey@neuling.org>
Reported-by: default avatarPhilippe De Muyter <phdm@macqel.be>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 1674400a

arch/powerpc/kernel/ptrace.c

+1 −0
Original line number Diff line number Diff line
@@ -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)