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From: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
To: David Miller <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	xie.he.0141@gmail.com
Cc: andrianov <andrianov@ispras.ru>, netdev <netdev@vger.kernel.org>
Subject: Regarding possible bug in net/wan/x25_asy.c
Date: Sun, 23 Aug 2020 20:58:33 +0530	[thread overview]
Message-ID: <CAD=jOEY=8T3-USi63hy47BZKfTYcsUw-s-jAc3xi9ksk-je+XA@mail.gmail.com> (raw)

Hello,

I have the following doubt:

sl->xhead is modified in both x25_asy_change_mtu() and
x25_asy_write_wakeup(). However, sl->lock is not held in
x25_asy_write_wakeup(). So, I am not sure if it is indeed possible to
have a race between these two functions. If it is possible that these
two functions can execute in parallel then the lock should be held in
x25_asy_write_wakeup() as well. Please let me know if this race is
possible.

Thanks and regards,
Madhuparna

             reply	other threads:[~2020-08-23 15:30 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-23 15:28 Madhuparna Bhowmik [this message]
2020-08-23 19:12 ` Regarding possible bug in net/wan/x25_asy.c Xie He
2020-08-24 14:13   ` Madhuparna Bhowmik
2020-08-24 20:49     ` Xie He
2020-08-26 14:35       ` Madhuparna Bhowmik

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