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-rw-r--r--arch/um/sys-x86_64/signal.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/um/sys-x86_64/signal.c b/arch/um/sys-x86_64/signal.c
index b740177066a0..73a7926f7370 100644
--- a/arch/um/sys-x86_64/signal.c
+++ b/arch/um/sys-x86_64/signal.c
@@ -168,7 +168,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
frame = (struct rt_sigframe __user *)
round_down(stack_top - sizeof(struct rt_sigframe), 16) - 8;
- frame -= 128;
+ ((unsigned char *) frame) -= 128;
if (!access_ok(VERIFY_WRITE, fp, sizeof(struct _fpstate)))
goto out;

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