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Tue, 2 Jan 2024 15:06:42 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4D94B20040; Tue, 2 Jan 2024 15:06:42 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id EA9552004D; Tue, 2 Jan 2024 15:06:40 +0000 (GMT) Received: from osiris (unknown [9.171.22.30]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTPS; Tue, 2 Jan 2024 15:06:40 +0000 (GMT) Date: Tue, 2 Jan 2024 16:06:39 +0100 From: Heiko Carstens To: Ilya Leoshkevich Cc: Alexander Gordeev , Alexander Potapenko , Andrew Morton , Christoph Lameter , David Rientjes , Joonsoo Kim , Marco Elver , Masami Hiramatsu , Pekka Enberg , Steven Rostedt , Vasily Gorbik , Vlastimil Babka , Christian Borntraeger , Dmitry Vyukov , Hyeonggon Yoo <42.hyeyoo@gmail.com>, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Mark Rutland , Roman Gushchin , Sven Schnelle Subject: Re: [PATCH v3 30/34] s390/traps: Unpoison the kernel_stack_overflow()'s pt_regs Message-ID: <20240102150639.6306-H-hca@linux.ibm.com> References: <20231213233605.661251-1-iii@linux.ibm.com> <20231213233605.661251-31-iii@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231213233605.661251-31-iii@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-GUID: leYrbA6vtAty3KAE9ah14tjkk5Bn0Uhc X-Proofpoint-ORIG-GUID: utJWxtGOYHGAv9Kk1hnF_c8f7r1ax0vb X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-02_04,2024-01-02_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 clxscore=1015 mlxlogscore=933 bulkscore=0 phishscore=0 adultscore=0 priorityscore=1501 mlxscore=0 suspectscore=0 lowpriorityscore=0 malwarescore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2401020115 X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: C2F0A40014 X-Stat-Signature: uykdzggrw3q474taiggnwkccw99h8rbo X-Rspam-User: X-HE-Tag: 1704208013-820361 X-HE-Meta: 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 YYr29lOj PHvHaLpyOY/FgAM1HrFq7PSw9AYBksFGd53xAWPgLPOXJKE5FrGsM3nZ7UWzBsOv3QdcZa6xEYZpL7qYcdhTy0WA6XT/0AmlsvgQ8j/tKQKEAopTmQM5zc4E1gV1JFc+yooDG56rxUGFSz0DjUKv/v69CwvSGMRN03pipOUaAjsNXe59ogro34xG8KXDCQaB8EFVjCCWRLLvDrB0fdAwr76gOPsmuJgvyNEx/6ZoKg5auE0LubItwz4+VAN0s2q4n9ec4TzaSXjLsqbbYyjJTrO1hkRfK8zO+XUlnLgQ4HZ4k98w= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, Dec 14, 2023 at 12:24:50AM +0100, Ilya Leoshkevich wrote: > This is normally done by the generic entry code, but the > kernel_stack_overflow() flow bypasses it. > > Reviewed-by: Alexander Potapenko > Signed-off-by: Ilya Leoshkevich > --- > arch/s390/kernel/traps.c | 6 ++++++ > 1 file changed, 6 insertions(+) Acked-by: Heiko Carstens