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Re: kern/22646 (Panic in ohci_add_done())
The following reply was made to PR kern/22646; it has been noted by GNATS.
From: Andreas Gustafsson <gson%gson.org@localhost>
To: Nick Hudson <nick.hudson%gmx.co.uk@localhost>
Subject: Re: kern/22646 (Panic in ohci_add_done())
Date: Mon, 25 Apr 2016 12:07:49 +0300
Nick Hudson wrote:
> Can you do the test again with the modified patch attached and also
> provide UGEN_DEBUG/ugendebug=10 output?
Doing just that, I was unable to reproduce the previous behavior;
gphoto2 just kept hanging and never got into the non-hanging state.
I figured this was because of all those ugen debug printfs going to the
9600 bps serial console and slowing things down, so I redirected the
ugen debug logs to the message buffer only by changing the lines
#define DPRINTF(x) if (ugendebug) printf x
#define DPRINTFN(n,x) if (ugendebug>(n)) printf x
#define DPRINTF(x) if (ugendebug) printf_tolog x
#define DPRINTFN(n,x) if (ugendebug>(n)) printf_tolog x
With that change, I was again able to get the behavior where gphoto2
stops hanging after a few runs. The following logs are again from a
number of hanging gphoto2 runs followed by a single non-hanging one.
> vmstat -u usbhist as well
Andreas Gustafsson, gson%gson.org@localhost
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