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[4.9,12/60] ARC: [arcompact] brown paper bag bug in unaligned access delay slot fixup

Message ID 20170213130334.724173650@linuxfoundation.org
State New
Headers show

Commit Message

gregkh@linuxfoundation.org Feb. 13, 2017, 1:03 p.m. UTC 
4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vineet Gupta <Vineet.Gupta1@synopsys.com>

commit a524c218bc94c705886a0e0fedeee45d1931da32 upstream.

Reported-by: Jo-Philipp Wich <jo@mein.io>
Fixes: 9aed02feae57bf7 ("ARC: [arcompact] handle unaligned access delay slot")
Cc: linux-kernel@vger.kernel.org
Cc: linux-snps-arc@lists.infradead.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/arc/kernel/unaligned.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

--- a/arch/arc/kernel/unaligned.c
+++ b/arch/arc/kernel/unaligned.c
@@ -243,7 +243,7 @@  int misaligned_fixup(unsigned long addre
 
 	/* clear any remanants of delay slot */
 	if (delay_mode(regs)) {
-		regs->ret = regs->bta ~1U;
+		regs->ret = regs->bta & ~1U;
 		regs->status32 &= ~STATUS_DE_MASK;
 	} else {
 		regs->ret += state.instr_len;