From: Heiko Carstens <hca@linux.ibm.com>
To: Alexander Gordeev <agordeev@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org
Subject: [PATCH 1/3] s390/probes: Fix wrong opcode for cgrb fixup
Date: Mon, 12 Oct 2026 10:36:27 +0200 [thread overview]
Message-ID: <20261012083629.2109206-2-hca@linux.ibm.com> (raw)
In-Reply-To: <20261012083629.2109206-1-hca@linux.ibm.com>
The last byte of the cgrb instruction is 0xe4, however the probes code
compares against 0xe6. Fix it.
Fixes: 6b169ac9b434 ("s390/kprobes: add support for compare and branch instructions")
Cc: stable@vger.kernel.org
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
---
arch/s390/lib/probes.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/s390/lib/probes.c b/arch/s390/lib/probes.c
index 1e184a03442d..049300b68ddd 100644
--- a/arch/s390/lib/probes.c
+++ b/arch/s390/lib/probes.c
@@ -99,8 +99,8 @@ int probe_get_fixup_type(u16 *insn)
break;
case 0xec:
switch (insn[2] & 0xff) {
+ case 0xe4: /* cgrb */
case 0xe5: /* clgrb */
- case 0xe6: /* cgrb */
case 0xf6: /* crb */
case 0xf7: /* clrb */
case 0xfc: /* cgib */
--
2.53.0
next prev parent reply other threads:[~2026-10-12 8:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-12 8:36 [PATCH 0/3] s390/probes: Various fixes Heiko Carstens
2026-10-12 8:36 ` Heiko Carstens [this message]
2026-10-12 8:41 ` [PATCH 1/3] s390/probes: Fix wrong opcode for cgrb fixup sashiko-bot
2026-10-12 8:36 ` [PATCH 2/3] s390/probes: Add missing fixup for bctgr and bic Heiko Carstens
2026-10-12 8:46 ` sashiko-bot
2026-10-12 8:36 ` [PATCH 3/3] s390/probes: Fix wrong mnemonic comment for clgib Heiko Carstens
2026-10-12 8:38 ` sashiko-bot
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