From: bugzilla-daemon@bugzilla.kernel.org
To: linux-bluetooth@kernel.org
Subject: [Bug 198043] Bluetooth mgmt api set powered causes kernel race condition
Date: Wed, 10 Jan 2018 17:21:54 +0000 [thread overview]
Message-ID: <bug-198043-62941-eJIDL6LyTI@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-198043-62941@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=198043
luc (l.perneel@luperco.com) changed:
What |Removed |Added
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CC| |l.perneel@luperco.com
--- Comment #1 from luc (l.perneel@luperco.com) ---
Had a similar issue on a 4.9.60 build where the hci_sock_release and
hci_send_to_channel on two CPUs generate a soft lockup between them.
The hci_sock_release with the _raw_write_lock (like here) and the
hci_sock_release with the _raw_read_lock (different than this case, but highly
probable caused by the same issue).
So it seems that the _raw_write_lock and the _raw_read_lock have a deadly race
between them.
Will dig deeper into the issue and post an update later.
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next prev parent reply other threads:[~2018-01-10 17:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-30 13:22 [Bug 198043] New: Bluetooth mgmt api set powered causes kernel race condition bugzilla-daemon
2018-01-10 17:21 ` bugzilla-daemon [this message]
2018-01-17 13:11 ` [Bug 198043] " bugzilla-daemon
2018-01-17 13:27 ` bugzilla-daemon
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