Date: Thu, 20 Nov 2008 17:56:07 -0500 From: "Michael Proto" <mike@jellydonut.org> To: stable@freebsd.org Subject: Re: LORs in RELENG_7 Message-ID: <1de79840811201456pc2ceb9atb3532430fb605160@mail.gmail.com> In-Reply-To: <20081120211148.GA5178@roadrunner.spoerlein.net> References: <20081120211148.GA5178@roadrunner.spoerlein.net>
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On Thu, Nov 20, 2008 at 4:11 PM, Ulrich Spoerlein <uspoerlein@gmail.com>wrote: > Hi, > > I'm running my RELENG_7 kernel with WITNESS and there's always a LOR > when pf(4) is enabled: > > lock order reversal: > 1st 0xc09ca828 ifnet (ifnet) @ /usr/src/sys/net/if.c:849 > 2nd 0xc45d604c pf task mtx (pf task mtx) @ > /usr/src/sys/modules/pf/../../contrib/pf/net/pf_if.c:916 > KDB: stack backtrace: > db_trace_self_wrapper(c08df797,fb671764,c0630e8e,c08e1c96,c45d604c,...) at > db_trace_self_wrapper+0x26 > kdb_backtrace(c08e1c96,c45d604c,c45d3b1c,c45d3b1c,c45d379e,...) at > kdb_backtrace+0x29 > witness_checkorder(c45d604c,9,c45d379e,394,c08e9058,...) at > witness_checkorder+0x6de > _mtx_lock_flags(c45d604c,0,c45d379e,394,fb6717dc,...) at > _mtx_lock_flags+0xbc > pfi_attach_group_event(0,c4450000,c08e9058,374,c44a920c,...) at > pfi_attach_group_event+0x4e > if_addgroup(c441c000,c08f70d6,4,0,0,...) at if_addgroup+0x2c7 > if_clone_createif(0,0,c08e9563,87,0,...) at if_clone_createif+0x81 > if_clone_create(fb671943,4,0,44,180,...) at if_clone_create+0x8c > tunclone(0,c461e400,fb671943,4,fb67195c,...) at tunclone+0x17a > devfs_lookup(fb6719d0,fb6719d0,fb671b7c,c418de04,2,...) at > devfs_lookup+0x50e > VOP_LOOKUP_APV(c0928f40,fb6719d0,c412f230,c08e77ef,2a9,...) at > VOP_LOOKUP_APV+0xa5 > lookup(fb671b7c,c08e77ef,c6,bf,c461e92c,...) at lookup+0x58e > namei(fb671b7c,c412f230,fb671a74,246,c0983774,...) at namei+0x34b > vn_open_cred(fb671b7c,fb671c78,ce8,c461e400,c4460558,...) at > vn_open_cred+0x2c9 > vn_open(fb671b7c,fb671c78,ce8,c4460558,c05e807d,...) at vn_open+0x33 > kern_open(c412f230,80a0f18,0,3,808ecfa,...) at kern_open+0xe7 > open(c412f230,fb671cfc,c,c08e28c3,c092c0b8,...) at open+0x30 > syscall(fb671d38) at syscall+0x2b3 > Xint0x80_syscall() at Xint0x80_syscall+0x20 > --- syscall (5, FreeBSD ELF32, open), eip = 0x2835a65b, esp = 0xbfbfeafc, > ebp = 0xbfbfeb38 --- > > > Are you using user or group rules in your pf.conf? IIRC there is still a known LOR in the socket layer with rules using the user or group filters. -Proto
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