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Fri, 21 Jun 2024 08:20:51 GMT Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8BD2320043; Fri, 21 Jun 2024 08:20:49 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3FFA220040; Fri, 21 Jun 2024 08:20:48 +0000 (GMT) Received: from [127.0.0.1] (unknown [9.152.108.100]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 21 Jun 2024 08:20:48 +0000 (GMT) Message-ID: Subject: Re: [PATCH v6 32/39] s390/ptdump: Add KMSAN page markers From: Ilya Leoshkevich To: Alexander Gordeev , Alexander Potapenko , Andrew Morton , Christoph Lameter , David Rientjes , Heiko Carstens , Joonsoo Kim , Marco Elver , Masami Hiramatsu , Pekka Enberg , Steven Rostedt , Vasily Gorbik , Vlastimil Babka Cc: 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 Date: Fri, 21 Jun 2024 10:20:48 +0200 In-Reply-To: <20240621002616.40684-33-iii@linux.ibm.com> References: <20240621002616.40684-1-iii@linux.ibm.com> <20240621002616.40684-33-iii@linux.ibm.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.4 (3.50.4-1.fc39) Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: VeEapbGV6IkSc8UA2_9IOlInc0MQ5ih1 X-Proofpoint-ORIG-GUID: r7kSYJf0oRMft-JV5P--079W7nGU4PZ_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-21_02,2024-06-20_04,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 mlxlogscore=999 impostorscore=0 lowpriorityscore=0 priorityscore=1501 phishscore=0 mlxscore=0 malwarescore=0 adultscore=0 suspectscore=0 spamscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2406140001 definitions=main-2406210058 On Fri, 2024-06-21 at 02:25 +0200, Ilya Leoshkevich wrote: > Add KMSAN vmalloc metadata areas to kernel_page_tables. >=20 > Signed-off-by: Ilya Leoshkevich > --- > =C2=A0arch/s390/mm/dump_pagetables.c | 30 ++++++++++++++++++++++++++++++ > =C2=A01 file changed, 30 insertions(+) >=20 > diff --git a/arch/s390/mm/dump_pagetables.c > b/arch/s390/mm/dump_pagetables.c > index ffd07ed7b4af..f51e5d0862a3 100644 > --- a/arch/s390/mm/dump_pagetables.c > +++ b/arch/s390/mm/dump_pagetables.c > @@ -36,6 +36,16 @@ enum address_markers_idx { > =C2=A0 VMEMMAP_END_NR, > =C2=A0 VMALLOC_NR, > =C2=A0 VMALLOC_END_NR, > +#ifdef CONFIG_KMSAN > + KMSAN_VMALLOC_SHADOW_START_NR, > + KMSAN_VMALLOC_SHADOW_END_NR, > + KMSAN_VMALLOC_ORIGIN_START_NR, > + KMSAN_VMALLOC_ORIGIN_END_NR, > + KMSAN_MODULES_SHADOW_START_NR, > + KMSAN_MODULES_SHADOW_END_NR, > + KMSAN_MODULES_ORIGIN_START_NR, > + KMSAN_MODULES_ORIGIN_END_NR, > +#endif > =C2=A0 MODULES_NR, > =C2=A0 MODULES_END_NR, > =C2=A0 ABS_LOWCORE_NR, > @@ -74,6 +84,16 @@ static struct addr_marker address_markers[] =3D { > =C2=A0#ifdef CONFIG_KASAN > =C2=A0 [KASAN_SHADOW_START_NR] =3D {KASAN_SHADOW_START, > "Kasan Shadow Start"}, > =C2=A0 [KASAN_SHADOW_END_NR] =3D {KASAN_SHADOW_END, "Kasan Shadow > End"}, > +#endif > +#ifdef CONFIG_KMSAN > + [KMSAN_VMALLOC_SHADOW_START_NR] =3D {0, "Kmsan vmalloc > Shadow Start"}, > + [KMSAN_VMALLOC_SHADOW_END_NR] =3D {0, "Kmsan vmalloc Shadow > End"}, > + [KMSAN_VMALLOC_ORIGIN_START_NR] =3D {0, "Kmsan vmalloc > Origins Start"}, > + [KMSAN_VMALLOC_ORIGIN_END_NR] =3D {0, "Kmsan vmalloc Origins > End"}, > + [KMSAN_MODULES_SHADOW_START_NR] =3D {0, "Kmsan Modules > Shadow Start"}, > + [KMSAN_MODULES_SHADOW_END_NR] =3D {0, "Kmsan Modules Shadow > End"}, > + [KMSAN_MODULES_ORIGIN_START_NR] =3D {0, "Kmsan Modules > Origins Start"}, > + [KMSAN_MODULES_ORIGIN_END_NR] =3D {0, "Kmsan Modules Origins > End"}, > =C2=A0#endif Please disregard this patch. It's not essential for the series, and also has a subtle bug: this block needs to be moved upwards, because right now { -1, NULL } overlaps [MODULES_NR]. I will resend it separately later. > =C2=A0 { -1, NULL } > =C2=A0};