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 PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Sat, 18 Oct 2014 21:48:19 +0200 From: Oliver Neukum <oliver@...kum.org> To: Hayes Wang <hayeswang@...ltek.com> Cc: netdev@...r.kernel.org, nic_swsd@...ltek.com, linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org Subject: Re: [PATCH net] r8152: use cancel_delayed_work for runtime suspend On Fri, 2014-10-17 at 13:55 +0800, Hayes Wang wrote: > It would cause dead lock for runtime suspend, when the workqueue > is running and runtime suspend occurs before the workqueue wakes > up the device. The rtl8152_suspend() waits the workqueue to finish > because of calling cancel_delayed_work_sync(). The workqueue waits > the suspend function to finish for waking up the device because of > calling usb_autopm_get_interface(). The diagnosis is good, the fix is not good. It opens a race during which the queued work can touch a suspended device. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists