From: John David Anglin <dave.anglin@bell.net>
Date: Mon, 21 Jul 2025 20:13:13 +0000 (-0400)
Subject: parisc: Try to fixup kernel exception in bad_area_nosemaphore path of do_page_fault()
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f92a5e36b0c45cd12ac0d1bc44680c0dfae34543;p=thirdparty%2Flinux.git

parisc: Try to fixup kernel exception in bad_area_nosemaphore path of do_page_fault()

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v5.12+
---

diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index c39de84e98b05..f1785640b049b 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -363,6 +363,10 @@ bad_area:
 	mmap_read_unlock(mm);
 
 bad_area_nosemaphore:
+	if (!user_mode(regs) && fixup_exception(regs)) {
+		return;
+	}
+
 	if (user_mode(regs)) {
 		int signo, si_code;