linux-kernel - Re: [PATCH v2] powerpc/mm: Fix null-pointer dereference in pgtable_cache

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Message-ID: <2a0d2c32-5548-445e-a67e-db48157685d7@kylinos.cn>
Date:   Mon, 4 Dec 2023 10:27:47 +0800
From:   Kunwu Chan <chentao@...inos.cn>
To:     Michael Ellerman <mpe@...erman.id.au>, npiggin@...il.com,
        christophe.leroy@...roup.eu
Cc:     kunwu.chan@...mail.com, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] powerpc/mm: Fix null-pointer dereference in
 pgtable_cache_add

Sure,i'll follow your suggestion in v3 patch:
1. set new to NULL
2. add a 'if' judgment before 'kmem_cache_create'

Thanks,
Kunwu

On 2023/12/1 18:17, Michael Ellerman wrote:
> avoid two calls to panic