Re: [PATCH 2/2] livepatch: fix patched module loading race

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Mar 04, 2015 at 11:02:59PM +0100, Jiri Kosina wrote:
> On Wed, 4 Mar 2015, Josh Poimboeuf wrote:
> 
> > Well, we could just get a reference on all patched modules to prevent them
> > from being unloaded.
> 
> Is that really a solution for cases where you are unloading a module (it 
> has "just" been switched to MODULE_STATE_GOING) and enable a patch which 
> patches one of its functions directly after it got switched to 
> MODULE_STATE_GOING?

Ah, right.  try_module_get() fails, we don't patch the module, and we
end up in the same mod->exit() race.  Never mind, again :-)

-- 
Josh
--
To unsubscribe from this list: send the line "unsubscribe live-patching" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Linux Kernel]     [Linux NFS]     [Linux NILFS]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux SCSI]

  Powered by Linux