From: Andrey Ryabinin <ryabinin.a.a@gmail.com>
To: Dave Hansen <dave.hansen@intel.com>,
Peter Zijlstra <peterz@infradead.org>,
kernel test robot <yujie.liu@intel.com>
Cc: oe-lkp@lists.linux.dev, lkp@intel.com,
Dave Hansen <dave.hansen@linux.intel.com>,
Seth Jenkins <sethjenkins@google.com>,
Kees Cook <keescook@chromium.org>,
linux-kernel@vger.kernel.org, x86@kernel.org,
Alexander Potapenko <glider@google.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Dmitry Vyukov <dvyukov@google.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
kasan-dev@googlegroups.com, "Yin,
Fengwei" <fengwei.yin@intel.com>
Subject: Re: [tip:x86/mm] [x86/mm] 1248fb6a82: Kernel_panic-not_syncing:kasan_populate_pmd:Failed_to_allocate_page
Date: Fri, 28 Oct 2022 00:35:44 +0300 [thread overview]
Message-ID: <1c3209e7-a184-22f7-096c-874a2f77ce55@gmail.com> (raw)
In-Reply-To: <864b4fbe-4462-9962-7afd-9140d5165cdb@intel.com>
On 10/27/22 18:12, Dave Hansen wrote:
> On 10/25/22 08:39, Andrey Ryabinin wrote:
>> KASAN tries to allocate shadow memory for the whole cpu entry area.
>> The size is CPU_ENTRY_AREA_MAP_SIZE/8 and this is obviously fails after your patch.
>> The fix this might be something like this:
>>
>> ---
>> arch/x86/include/asm/kasan.h | 2 ++
>> arch/x86/mm/cpu_entry_area.c | 3 +++
>> arch/x86/mm/kasan_init_64.c | 16 +++++++++++++---
>> 3 files changed, 18 insertions(+), 3 deletions(-)
>
> Andrey, if you have a minute, could you send this as a real patch, with
> a SoB?
Done, It slightly different because there was a bug in vaddr->nid calculation.
next prev parent reply other threads:[~2022-10-27 21:36 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-25 4:54 kernel test robot
2022-10-25 10:33 ` Peter Zijlstra
2022-10-25 14:14 ` Yin, Fengwei
2022-10-25 15:39 ` Andrey Ryabinin
2022-10-27 10:02 ` Yujie Liu
2022-10-27 10:13 ` Peter Zijlstra
2022-10-27 15:12 ` Dave Hansen
2022-10-27 21:31 ` [PATCH] x86/kasan: map shadow for percpu pages on demand Andrey Ryabinin
2022-10-28 2:51 ` Yin, Fengwei
2022-10-28 14:20 ` Andrey Ryabinin
2022-10-31 0:15 ` Yin, Fengwei
2022-10-27 21:35 ` Andrey Ryabinin [this message]
2022-10-28 6:43 ` [tip: x86/mm] x86/kasan: Map " tip-bot2 for Andrey Ryabinin
2022-12-17 18:55 ` tip-bot2 for Andrey Ryabinin
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