the variable backup_current_thread_info isn't freed before existing the
function.
Signed-off-by: Cong Ding <ding...@gmail.com>
---
arch/powerpc/kernel/kgdb.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c
index 8747447..5ca82cd 100644
--- a/arch/powerpc/kernel/kgdb.c
+++ b/arch/powerpc/kernel/kgdb.c
@@ -154,12 +154,12 @@ static int kgdb_handle_breakpoint(struct pt_regs *regs)
static int kgdb_singlestep(struct pt_regs *regs)
{
struct thread_info *thread_info, *exception_thread_info;
- struct thread_info *backup_current_thread_info = \
- (struct thread_info *)kmalloc(sizeof(struct thread_info),
GFP_KERNEL);
+ struct thread_info *backup_current_thread_info;
if (user_mode(regs))
return 0;
+ backup_current_thread_info = (struct thread_info
*)kmalloc(sizeof(struct thread_info), GFP_KERNEL);
/*
* On Book E and perhaps other processors, singlestep is handled on
* the critical exception stack. This causes current_thread_info()
@@ -185,6 +185,7 @@ static int kgdb_singlestep(struct pt_regs *regs)
/* Restore current_thread_info lastly. */
memcpy(exception_thread_info, backup_current_thread_info,
sizeof *thread_info);
+ kfree(backup_current_thread_info);
return 1;
}
--
1.7.9.5
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