Date: Sat, 19 Jun 1999 08:10:02 -0700 (PDT) From: Dmitrij Tejblum <tejblum@arc.hq.cti.ru> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/12247: userlevel program let kernel hang Message-ID: <199906191510.IAA84582@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
The following reply was made to PR kern/12247; it has been noted by GNATS. From: Dmitrij Tejblum <tejblum@arc.hq.cti.ru> To: Bruce Evans <bde@zeta.org.au> Cc: freebsd-gnats-submit@FreeBSD.ORG Subject: Re: kern/12247: userlevel program let kernel hang Date: Sat, 19 Jun 1999 19:00:24 +0400 Bruce Evans wrote: > tsleep()'s return codes are poorly documented and were > misinterpreted in lf_setlock(). tsleep() can return 0 if the process > was restarted by a debugger, I didn't realise that a process sleeping interruptible can be stopped inside the tsleep call (is that true?). It looks dangerous to me. For example, interruptible nfs may sleep interuuptible, in particular in the vfs_bio code, with vnode locks held, etc. Stopping at such point looks like a good opportunity to hang the machine... Dima To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199906191510.IAA84582>