linux-kernel - Re: MFD: mutex from ISR in ezx-pcap?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 29 Jun 2009 17:20:40 -0300
From:	Daniel Ribeiro <drwyrm@...il.com>
To:	Jiri Slaby <jirislaby@...il.com>
Cc:	sameo@...ux.intel.com, LKML <linux-kernel@...r.kernel.org>,
	laforge@...nezx.org
Subject: Re: MFD: mutex from ISR in ezx-pcap?

Hi Jiri,

Em Seg, 2009-06-29 às 21:34 +0200, Jiri Slaby escreveu:
> Hi,
> 
> pcap_adc_irq tries to perform non-atomic operations in ISR which is not
> allowed. Above that, it may deadlock.
> 
> Since all the operations there (read, write, mutex locking) may sleep,
> any objections to convert the ISR contents to a workqueue?

pcap_adc_irq actually already runs from a workqueue (pcap_isr_work).

-- 
Daniel Ribeiro

Download attachment "signature.asc" of type "application/pgp-signature" (198 bytes)