Date: Tue, 18 Sep 2001 15:01:25 -0700 (PDT) From: John Baldwin <jhb@FreeBSD.org> To: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> Cc: current@FreeBSD.org Subject: RE: Seen this lock order reversal? Message-ID: <XFMail.010918150125.jhb@FreeBSD.org> In-Reply-To: <200109181753.f8IHrqb52417@khavrinen.lcs.mit.edu>
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On 18-Sep-01 Garrett Wollman wrote: > lock order reversal > 1st 0xd3a5c11c process lock @ ../../../vm/vm_glue.c:469 > 2nd 0xc0e3fe30 lockmgr interlock @ ../../../kern/kern_lock.c:239 > > This is on relatively old (~ three months) sources. The first lock is > from swapout_procs(); I assume the second lock actually refers to the > call to lockmgr(&vm->vm_map.lock, ...) further down in the same > function. If this has been fixed already, let me know. (It doesn't > seem to have hurt anything.) It is old, but I think it has been fixed recently as a side effect of the KSE commit. (In terms of the pre-KSE kernel, the P_DEADLKTREAT flag moved from p_flag to p_sflag which changed its locking semantics.) > -GAWollman -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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