linux-kernel - Panic on kmemleak scan

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Date:   Mon, 11 Oct 2021 14:23:31 +0300
From:   Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>
To:     Mike Rapoport <rppt@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>, linux-mm@...ck.org
Subject: Panic on kmemleak scan

Hello Mike,

commit a7259df767 ("memblock: make memblock_find_in_range method private") [1]
invokes a kernel panic while running kmemleak on OF platforms with nomaped
regions, basically it's similar to an issue reported and fixed earlier by [2]:

   Unable to handle kernel paging request at virtual address ffff000021e00000
   [...]
     scan_block+0x64/0x170
     scan_gray_list+0xe8/0x17c
     kmemleak_scan+0x270/0x514
     kmemleak_write+0x34c/0x4ac

I believe it would be a trivial problem to correct for you, thank you in
advance!

[1] https://lore.kernel.org/all/20210816122622.30279-1-rppt@kernel.org/T/#u
[2] https://lore.kernel.org/lkml/20190119132832.GA29881@MBP.local/t/#m032124f36c07

--
Best wishes,
Vladimir