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Mon, 12 Oct 2026 08:36:29 +0000 (GMT) Received: from tuxmaker.lnxne.boe (unknown [9.87.85.9]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 12 Oct 2026 08:36:29 +0000 (GMT) From: Heiko Carstens To: Alexander Gordeev , Sven Schnelle , Vasily Gorbik , Christian Borntraeger 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 Message-ID: <20261012083629.2109206-2-hca@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20261012083629.2109206-1-hca@linux.ibm.com> References: <20261012083629.2109206-1-hca@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Info: AW1haW4tMjYxMDEyMDAzMiBTYWx0ZWRfXypGXQvZoL12s Flqx+OX+VTMnwDbLpBGK88G0lERkiBH1iVogUws1F28oIOeTWksWLIG48s42pl5EOA/NHWbp82v DdAkL02Ed/6OfH24T2xCXKlnnR+O20w= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDEyMDAzMiBTYWx0ZWRfX/W5JPHgoXr9Z BQqxffQ9cSbc/X99cOK60ILYx8REkl0w6gTD9ySvWZB2tCIYT7EUkEj40pt+GsM2TTtTOPc3co1 ySWtubUgsIP3Rf4QCqGVq814TKU1F9+GfrmrLXSLCqt3ydVZ6OzL3lCv2OaditSvcMkaEN/wN2K Gb0dTWe++6F4PiEeU+c1EJ3D88D7K2W+2dT1rHHn1GrTS/aVp3XoqBrpOKtZSxh0SBcdMENkcE5 QhubcBtKLtaVrIhEOkh04iHSxwhM+TLEzouGzfGZPd+UjBNUqHxFFHAEgwFpAHSm4L1vogfwsXT B/t3+JMfi9T2AUUUgqbPqUoRpAA498JlxETVYu3JUEyCpSvx3lG1ff+QGjO/9GHn+cFRNh0LTLE QRei7+3chzBmcWPTHwUIDoVHkOAvp5aX0eQ3gi8jKz20tCfdoyUbkH1ECiD4+pZLacMYA78GBMn v9PFCTuutEYV6eKWtkw== X-Proofpoint-GUID: 8vJAEkqz2MyZAi913n10Axv7vL5nUxou X-Authority-Analysis: v=2.4 cv=RoFQvymK c=1 sm=1 tr=0 ts=6acc9c12 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=660iZSQnnn4A:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=5hdLX1jSI6mmvzFWJ2MA:9 X-Proofpoint-ORIG-GUID: 8vJAEkqz2MyZAi913n10Axv7vL5nUxou X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-12_02,2026-10-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 spamscore=0 phishscore=0 adultscore=0 bulkscore=0 impostorscore=0 suspectscore=0 malwarescore=0 clxscore=1015 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610120032 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 --- 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