From: Leon Romanovsky <leon@kernel.org>
To: yanjun.zhu@linux.dev, jgg@ziepe.ca, linux-rdma@vger.kernel.org,
Peiyang He <peiyang_he@smail.nju.edu.cn>
Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org,
pandit.parav@gmail.com, dledford@redhat.com
Subject: Re: [PATCH v2] RDMA/rxe: Fix OOB in free_rd_atomic_resources()
Date: Wed, 12 Aug 2026 07:54:32 -0400 [thread overview]
Message-ID: <178653567224.16595.8974973380065494257.b4-ty@kernel.org> (raw)
In-Reply-To: <A8FFB80EB4DA06C9+20260730022827.2906506-1-peiyang_he@smail.nju.edu.cn>
On Thu, 30 Jul 2026 10:28:27 +0800, Peiyang He wrote:
> free_rd_atomic_resources() iterates using qp->attr.max_dest_rd_atomic.
> Updating max_dest_rd_atomic before freeing the old array can make the
> free path walk past the old allocation and trigger a slab out-of-bounds
> write catched by KASAN:
> ==================================================================
> BUG: KASAN: slab-out-of-bounds in free_rd_atomic_resource drivers/infiniband/sw/rxe/rxe_qp.c:180 [inline]
> BUG: KASAN: slab-out-of-bounds in free_rd_atomic_resources drivers/infiniband/sw/rxe/rxe_qp.c:171 [inline]
> BUG: KASAN: slab-out-of-bounds in free_rd_atomic_resources drivers/infiniband/sw/rxe/rxe_qp.c:163 [inline]
> BUG: KASAN: slab-out-of-bounds in rxe_qp_from_attr+0x1e88/0x2150 drivers/infiniband/sw/rxe/rxe_qp.c:712
> Write of size 4 at addr ffff88802b8dddb8 by task syz.3.451/11063
>
> [...]
Applied, thanks!
[1/1] RDMA/rxe: Fix OOB in free_rd_atomic_resources()
https://git.kernel.org/rdma/rdma/c/2f96d52eabe576
Best regards,
--
Leon Romanovsky <leon@kernel.org>
prev parent reply other threads:[~2026-08-12 11:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-30 2:28 Peiyang He
2026-08-12 11:54 ` Leon Romanovsky [this message]
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