[Nut-upsuser] newhidups crashes intermittently (double free or corruption)

[Arnaud Quette]

> ...
> * this problem is known:
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=354305
>
> * this is linked to the reconnexion mechanism, and has appeared since
> the add of mfrs other than MGE since it wasn't present before (maybe
> sits inside the libusb/usb_close() function).
>
> * It's also easy to reproduce (tested on 2.0.3 and trunk):
> 1) launch newhidups, and wait for some notification
> 2) unplug the usb cord and wait a bit... you got it!
>
> * a gdb trace (won't tell much without compiling libusb in debug mode!):
> ...
> =>Got to reconnect!
>
> ==================================================
> = device has been disconnected, try to reconnect =
> ==================================================
> Closing device
> *** glibc detected *** double free or corruption (fasttop): 0x0806a5e0 ***
>
> Program received signal SIGABRT, Aborted.
> 0xb7e3ba97 in raise () from /lib/tls/libc.so.6
> (gdb) bt
> #0  0xb7e3ba97 in raise () from /lib/tls/libc.so.6
> #1  0xb7e3d329 in abort () from /lib/tls/libc.so.6
> #2  0xb7e6f896 in __fsetlocking () from /lib/tls/libc.so.6
> #3  0xb7e75fcf in malloc_usable_size () from /lib/tls/libc.so.6
> #4  0xb7e7636a in free () from /lib/tls/libc.so.6
> #5  0xb7f437a7 in usb_close () from /lib/libusb-0.1.so.4
> #6  0x08050e85 in libusb_close ()
> #7  0x0804ffd2 in HIDCloseDevice ()
> #8  0x0804ab06 in reconnect_ups ()
> #9  0x0804a022 in upsdrv_updateinfo ()
> #10 0x0804bc4f in main ()
>
> I'll investigate it and get back asap.

ok, fixed in subversion trunk and Testing. Will be released with 2.O.4

Arnaud
--
Linux / Unix Expert - MGE UPS SYSTEMS - R&D Dpt
Network UPS Tools (NUT) Project Leader - http://www.networkupstools.org/
Debian Developer - http://people.debian.org/~aquette/
OpenSource Developer - http://arnaud.quette.free.fr/