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From: Khawar Ahemad <ahemadkhawar123@gmail.com>
To: daniel@iogearbox.net
Cc: bpf@vger.kernel.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, magnus.karlsson@intel.com,
	maciej.fijalkowski@intel.com, sdf@fomichev.me, ast@kernel.org,
	kuba@kernel.org, pabeni@redhat.com,
	syzbot+aa48b5fe7bfda62d1682@syzkaller.appspotmail.com
Subject: Re: [PATCH bpf-next] xsk: Fix circular locking dependency in xsk_bind
Date: Tue, 25 Aug 2026 21:12:54 +0530	[thread overview]
Message-ID: <20260825154254.86328-1-ahemadkhawar123@gmail.com> (raw)
In-Reply-To: <20260825152152.86092-1-ahemadkhawar123@gmail.com>

Hi Daniel,

Thank you for the quick review and pointer. You are completely right —
I missed that xsk_notifier() calls xp_clear_dev() while holding xs->mutex,
which acquires netdev_lock_ops() internally.

Please drop this patch. I will step back and do a more thorough analysis
of the full locking design between xs->mutex, net->xdp.lock, and
xp_clear_dev().

Thanks,
Khawar Ahemad <ahemadkhawar123@gmail.com>

  parent reply	other threads:[~2026-08-25 15:43 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-25 15:21 [PATCH bpf-next] xsk: Fix circular locking dependency in xsk_bind Khawar Ahemad
2026-08-25 15:39 ` Daniel Borkmann
2026-08-25 15:42 ` Khawar Ahemad [this message]
2026-08-25 16:21 ` bot+bpf-ci
2026-08-25 20:07 ` [syzbot ci] " syzbot ci

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