From: Johannes Weiner <hannes@cmpxchg.org>
To: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Christoph Hellwig <hch@lst.de>,
linux-mm@kvack.org, Michal Hocko <mhocko@kernel.org>,
Roman Gushchin <roman.gushchin@linux.dev>,
Shakeel Butt <shakeel.butt@linux.dev>,
Muchun Song <muchun.song@linux.dev>,
cgroups@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH 1/2] vmalloc: Fix accounting of VmallocUsed with i915
Date: Wed, 11 Dec 2024 10:32:12 -0500 [thread overview]
Message-ID: <20241211153212.GA3136251@cmpxchg.org> (raw)
In-Reply-To: <20241211043252.3295947-1-willy@infradead.org>
On Wed, Dec 11, 2024 at 04:32:49AM +0000, Matthew Wilcox (Oracle) wrote:
> If the caller of vmap() specifies VM_MAP_PUT_PAGES (currently only the
> i915 driver), we will decrement nr_vmalloc_pages in vfree() without ever
> incrementing it. Check the flag before decrementing the counter.
>
> Fixes: b944afc9d64d (mm: add a VM_MAP_PUT_PAGES flag for vmap)
> Cc: stable@vger.kernel.org
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
next prev parent reply other threads:[~2024-12-11 15:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-11 4:32 Matthew Wilcox (Oracle)
2024-12-11 4:32 ` [PATCH 2/2] vmalloc: Account memcg per vmalloc Matthew Wilcox (Oracle)
2024-12-11 5:06 ` Shakeel Butt
2024-12-11 16:09 ` Johannes Weiner
2024-12-11 16:50 ` Matthew Wilcox
2024-12-11 19:32 ` Shakeel Butt
2024-12-11 20:20 ` Matthew Wilcox
2024-12-11 20:58 ` Shakeel Butt
2024-12-11 21:08 ` Matthew Wilcox
2024-12-11 22:17 ` kernel test robot
2024-12-11 23:36 ` kernel test robot
2024-12-11 15:32 ` Johannes Weiner [this message]
2024-12-11 20:45 ` [PATCH 1/2] vmalloc: Fix accounting of VmallocUsed with i915 Shakeel Butt
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