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Date: Wed, 14 May 2008 07:46:34 +0200 From: Willy Tarreau <w@....eu> To: Harald Dunkel <harald.dunkel@...nline.de> Cc: Vegard Nossum <vegard.nossum@...il.com>, linux-kernel@...r.kernel.org Subject: Re: 2.6.25.3: su gets stuck for root On Wed, May 14, 2008 at 06:55:24AM +0200, Harald Dunkel wrote: > Willy Tarreau wrote: > > > >even as root ? Because if you run strace on "su" as a user, you will > >lose the setuid which may change the conditions. > > > > It gets stuck _only_ if I am root. Running su without root permission > is no problem. OK. That's quite strange. > As written before, If I kick out the "stty intr '^C'" from root's > .bashrc, then the second su succeeds. Running the stty command > manually in this new shell is no problem. > > Can you reproduce this problem? It doesn't need XWindow or any > special user. Simply login as root on tty2, and run "su". If it > gets stuck, then you could login on tty3 and kill -9 ### the blocking > stty. I tried (I'm on 2.6.25.1). But neither "su", "su willy" nor "stty intr ^C" caused such a problem unfortunately. You may want to ask several people to test in the same environment as yours (same distro, etc...) in order to find whether it's a user-land bug or a kernel bug. Most likely it's a kernel bug or side effect which is triggered by your version of su or stty. > Regards > > Harri Willy -- 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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