From: patchwork-bot+netdevbpf@kernel.org
To: =?utf-8?b?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2VuIDx0b2tlQHJlZGhhdC5jb20+?=@aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org
Cc: akpm@linux-foundation.org, david@redhat.com,
lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com,
vbabka@suse.cz, rppt@kernel.org, surenb@google.com,
mhocko@suse.com, hawk@kernel.org, ilias.apalodimas@linaro.org,
kuba@kernel.org, almasrymina@google.com, stable@vger.kernel.org,
deller@gmx.de, davem@davemloft.net, edumazet@google.com,
pabeni@redhat.com, horms@kernel.org, linux-mm@kvack.org,
netdev@vger.kernel.org
Subject: Re: [PATCH net v2] page_pool: Fix PP_MAGIC_MASK to avoid crashing on some 32-bit arches
Date: Mon, 06 Oct 2025 20:34:31 +0000 [thread overview]
Message-ID: <175978287125.1522677.13468458175773865166.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20250930114331.675412-1-toke@redhat.com>
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Tue, 30 Sep 2025 13:43:29 +0200 you wrote:
> Helge reported that the introduction of PP_MAGIC_MASK let to crashes on
> boot on his 32-bit parisc machine. The cause of this is the mask is set
> too wide, so the page_pool_page_is_pp() incurs false positives which
> crashes the machine.
>
> Just disabling the check in page_pool_is_pp() will lead to the page_pool
> code itself malfunctioning; so instead of doing this, this patch changes
> the define for PP_DMA_INDEX_BITS to avoid mistaking arbitrary kernel
> pointers for page_pool-tagged pages.
>
> [...]
Here is the summary with links:
- [net,v2] page_pool: Fix PP_MAGIC_MASK to avoid crashing on some 32-bit arches
https://git.kernel.org/netdev/net/c/95920c2ed02b
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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prev parent reply other threads:[~2025-10-06 20:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-30 11:43 [PATCH net v2] page_pool: Fix PP_MAGIC_MASK to avoid crashing on some 32-bit arches Toke Høiland-Jørgensen
2025-09-30 23:36 ` Mina Almasry
2025-10-01 7:31 ` Toke Høiland-Jørgensen
2025-10-01 7:21 ` Helge Deller
2025-10-01 8:28 ` Toke Høiland-Jørgensen
2025-10-06 20:34 ` patchwork-bot+netdevbpf [this message]
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