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Message-ID: <20100514090903.GC8773@vicerveza.homeunix.net> Date: Fri, 14 May 2010 11:09:05 +0200 From: Lluís Batlle i Rossell <viriketo@...il.com> To: linux-kernel@...r.kernel.org Subject: fds jumping between processes Hello, here is quite an open bug report... I could not reproduce this again, but it involves the fds opened of a killed process being passed to another process, or something like this. I'm using vanilla 2.6.33.3 in x86_64. I was using skype, talking through it using alsa, and trying the 'share desktop' feature, it died. Starting it again, it could not open the alsa device. Using fuser: ...:/dev/snd]$ fuser * controlC0: 32341 pcmC0D0p: 32341 timer: 32341 Which that was: $ ps ax | grep 323 32341 ? S 0:01 /home/xxx/.nix-profile/bin/xpdf /tmp/xxx.pdf So, after skype (using alsa) died, the xpdf process took the soundcard fds skype had. It does not make much sense xpdf to use sound... so I guess something worth looking happened. I don't have more details. Killing xpdf made the new skype open the alsa device properly. Sorry for not having analised the situation better. Now I cannot reproduce it anymore. Maybe this will make someone knowing say "ah, let me look if ...". I just thought if this is a bug in the kernel, it can involve security problems. Thank you, Lluís. -- 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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