From: Jason Gunthorpe <jgg@ziepe.ca>
To: Kevan Rehm <kevanrehm@gmail.com>
Cc: Mark Zhang <markzhang@nvidia.com>,
Leon Romanovsky <leon@kernel.org>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
Yishai Hadas <yishaih@nvidia.com>,
kevan.rehm@hpe.com, chien.tin.tung@intel.com
Subject: Re: Segfault in mlx5 driver on infiniband after application fork
Date: Mon, 12 Feb 2024 12:12:38 -0400 [thread overview]
Message-ID: <20240212161238.GF765010@ziepe.ca> (raw)
In-Reply-To: <53992378-7BB2-4E8C-BD3F-8A2B1FC837BD@gmail.com>
On Mon, Feb 12, 2024 at 11:04:36AM -0500, Kevan Rehm wrote:
> Those routines call ibv_dontfork_range on the page after it’s been
> allocated via posix_memalign(). _add_page() then adds the new page
> to the mlx5_context field dbr_available_pages.
Oh, if this is your trouble then upgrade your kernel. This part is
fixed on kernels that have working fork support.
Jason
next prev parent reply other threads:[~2024-02-12 16:12 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-11 19:24 Segfault in mlx5 driver on infiniband after application fork Kevan Rehm
2024-02-12 13:33 ` Jason Gunthorpe
2024-02-12 14:37 ` Kevan Rehm
2024-02-12 14:40 ` Jason Gunthorpe
2024-02-12 16:04 ` Kevan Rehm
2024-02-12 16:12 ` Jason Gunthorpe [this message]
2024-02-12 16:37 ` Kevan Rehm
2024-02-12 16:45 ` Jason Gunthorpe
2024-02-16 19:56 ` Kevan Rehm
-- strict thread matches above, loose matches on Subject: below --
2024-02-21 12:51 Kevan Rehm
2024-02-13 16:45 Kevan Rehm
2024-02-07 19:17 Rehm, Kevan
2024-02-08 8:52 ` Leon Romanovsky
2024-02-08 9:05 ` Mark Zhang
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