Date: Mon, 17 Jan 2005 22:07:21 +0000 (UTC) From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> To: FreeBSD current mailing list <current@freebsd.org> Subject: LOR: kern_descrip.c:2277,2278 Message-ID: <Pine.BSF.4.53.0501172204330.70426@e0-0.zab2.int.zabbadoz.net>
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Hi, I have added the following as LOR #055 to "the LOR page"[1]. lock order reversal 1st 0xffffffff80c3a9e8 sleep mtxpool (sleep mtxpool) @ sys/kern/kern_descrip.c:2277 2nd 0xffffff00222d8a48 filedesc structure (filedesc structure) @ sys/kern/kern_descrip.c:2278 KDB: stack backtrace: witness_checkorder() at witness_checkorder+0x5f1 _mtx_lock_flags() at _mtx_lock_flags+0x4a dupfdopen() at dupfdopen+0x320 kern_open() at kern_open+0x5de syscall() at syscall+0x4ab Xfast_syscall() at Xfast_syscall+0xa8 --- syscall (5, FreeBSD ELF64, open), rip = 0x80077e7d0, rsp = 0x7fffffffe6f8, rbp = 0x7fffffffec70 --- I can easily reproduce it every boot. It seems to be triggered by Capi4BSD[2] framework which I incorporated in my private tree. Can someone please comment on this ? [1] http://sources.zabbadoz.net/freebsd/lor.html#055 [2] http://lists.freebsd.org/pipermail/freebsd-isdn/2004-December/000308.html -- Bjoern A. Zeeb bzeeb at Zabbadoz dot NeT
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