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Message-ID: <20151209064542.GW20997@ZenIV.linux.org.uk> Date: Wed, 9 Dec 2015 06:45:42 +0000 From: Al Viro <viro@...IV.linux.org.uk> To: Dominique Martinet <dominique.martinet@....fr> Cc: Andy Lutomirski <luto@...capital.net>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, V9FS Developers <v9fs-developer@...ts.sourceforge.net>, Linux FS Devel <linux-fsdevel@...r.kernel.org> Subject: Re: [V9fs-developer] Hang triggered by udev coldplug, looks like a race On Wed, Dec 09, 2015 at 07:23:16AM +0100, Dominique Martinet wrote: > Andy Lutomirski wrote on Tue, Dec 08, 2015: > > Trace attached. I don't see anything wrong, but I also don't know > > what I'm looking for. > > Actually doesn't look good, not sure if trace could be missing messages > but it looks like tags get reused... > > Quick and dirty parse script (attached output, it doesn't handle TFLUSH > but there are none in his message): There's also not a single RCLUNK in there, which looks like missing packets. AFAICS, all (apparent) tag reuses caught by your awk script are of that nature. And all RERROR are plain "no such file" in response to TWALK; all those TCLUNK in there get no reply whatsoever - neither success nor failure... -- 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/
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