From: Andrew Morton <akpm@linux-foundation.org>
To: Chen Jun <chenjun102@huawei.com>
Cc: <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>, <catalin.marinas@arm.com>,
<will@kernel.org>, <rui.xiang@huawei.com>
Subject: Re: [PATCH 0/2] Fix page_owner broken on arm64
Date: Wed, 17 Mar 2021 15:23:12 -0700 [thread overview]
Message-ID: <20210317152312.32e6fc7dd469cd7df57ed2e5@linux-foundation.org> (raw)
In-Reply-To: <20210317142050.57712-1-chenjun102@huawei.com>
On Wed, 17 Mar 2021 14:20:48 +0000 Chen Jun <chenjun102@huawei.com> wrote:
> On arm64, cat /sys/kernel/debug/page_owner
> All pages return the same stack
> stack_trace_save+0x4c/0x78
> register_early_stack+0x34/0x70
> init_page_owner+0x34/0x230
> page_ext_init+0x1bc/0x1dc
>
> The reason is arch_stack_walk save 2 more entries than before.
>
> To fix it, add skip in arch_stack_walk
>
> *** BLURB HERE ***
>
> 1. Prepare for 2, move stacktrace_cookie to .h
> 2. Fix the problem
>
5fc57df2f6fd was September 2020, so I assume we'll be needing cc:stable
on these?
(I'll also assume that the arm folks will be handling these)
prev parent reply other threads:[~2021-03-17 22:24 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-17 14:20 [PATCH 0/2] Fix page_owner broken on arm64 Chen Jun
2021-03-17 14:20 ` [PATCH 1/2] stacktrace: Move struct stacktrace_cookie to stacktrace.h Chen Jun
2021-03-17 14:20 ` [PATCH 2/2] arm64: stacktrace: Add skip when task == current Chen Jun
2021-03-17 18:36 ` Catalin Marinas
2021-03-17 19:34 ` Mark Rutland
2021-03-18 3:24 ` chenjun (AM)
2021-03-18 13:22 ` chenjun (AM)
2021-03-18 16:17 ` Catalin Marinas
2021-03-18 17:12 ` Mark Rutland
2021-03-18 18:36 ` Catalin Marinas
2021-03-17 22:23 ` Andrew Morton [this message]
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