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
| ||
|
Date: Sat, 10 Mar 2007 14:31:57 -0600 From: Matt Mackall <mpm@...enic.com> To: Francois Romieu <romieu@...zoreil.com> Cc: Simon Arlott <simon@...e.lp0.eu>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, netdev@...r.kernel.org Subject: Re: netconsole system freeze when cable unplugged On Fri, Mar 09, 2007 at 09:42:43PM +0100, Francois Romieu wrote: > Simon Arlott <simon@...e.lp0.eu> : > > When I unplug the cable the system just stops responding to anything, > > at all. No message is printed to the console when the cable is plugged > > back in. > > rtl8139_interrupt (spin_lock(&tp->lock)) > -> rtl8139_weird_interrupt > -> rtl_check_media > -> mii_check_media (printk(KERN_INFO "%s: link down\n", ...)) > [netpoll stuff here] > -> rtl8139_poll_controller > -> rtl8139_interrupt > *deadlock* Probably the best thing that can be done here aside from moving mii_check_media outside interrupt handling is to add netpoll_plug/unplug(dev) methods that push work off to netpoll's queue for drivers that have a netpoll recursion problem. -- Mathematics is the supreme nostalgia of our time. - 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