Re: Arm64 crash while reading memory sysfs
From: Andrew Morton <akpm@linux-foundation.org>
Date: 2021-05-27 00:31:46
Also in:
linux-arm-kernel, lkml
On Wed, 26 May 2021 20:16:14 -0400 Qian Cai [off-list ref] wrote:
On 5/26/2021 1:24 PM, Mike Rapoport wrote:quoted
On Wed, May 26, 2021 at 12:09:14PM +0000, Qian Cai (QUIC) wrote:quoted
quoted
On Tue, May 25, 2021 at 03:25:59PM +0000, Qian Cai (QUIC) wrote:quoted
Reverting the patchset "arm64: drop pfn_valid_within() and simplify pfn_valid()" [1] from today's linux-next fixed a crash whilereading files under /sys/devices/system/memory.Does the issue persist of you only revert the latest patch in the series? In next-20210525 it would be commit 89fb47db72f2 ("arm64-drop-pfn_valid_within-and-simplify-pfn_valid-fix") and commit dfe215e9bac2 ("arm64: drop pfn_valid_within() and simplify pfn_valid()").Reverting those two commits alone is enough to fix the issue.
(cc Stephen) Thanks, I'll drop arm64-drop-pfn_valid_within-and-simplify-pfn_valid.patch arm64-drop-pfn_valid_within-and-simplify-pfn_valid-fix.patch