Date: Mon, 19 Sep 2005 14:07:46 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: Gleb Kozyrev <gkozyrev@ukr.net> Cc: freebsd-current@freebsd.org Subject: Re: LOR in uipc_usrreq.c and kern_descrip.c Message-ID: <20050919140646.I99647@fledge.watson.org> In-Reply-To: <000001c5bd19$dd6a4b10$0130a8c0@Gleb> References: <000001c5bd19$dd6a4b10$0130a8c0@Gleb>
next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, 19 Sep 2005, Gleb Kozyrev wrote: > Hello, All! > > While playing with wine-20050830 I saw the following: Could you file a PR on this, and forward me the PR number? This needs to be fixed, but will be a moderate amount of work that will likely have to happen after 6.0-RELEASE. In theory there is a deadlock risk here, but my hope is that the chances are low that it will occur in practice. Thanks, Robert N M Watson > > =========Beginning of the citation============== > lock order reversal > 1st 0xc0971c60 unp (unp) @ /usr/src/sys/kern/uipc_usrreq.c:249 > 2nd 0xc0922160 filelist lock (filelist lock) @ /usr/src/sys/kern/kern_descrip.c:2127 > KDB: stack backtrace: > kdb_backtrace(0,ffffffff,c0934d08,c09346f0,c08c04cc) at kdb_backtrace+0x29 > witness_checkorder(c0922160,9,c08571f2,84f) at witness_checkorder+0x564 > _sx_xlock(c0922160,c08571f2,84f) at _sx_xlock+0x50 > fdrop_locked(c1b41c60,0,c12f8f40,0,c08571f2) at fdrop_locked+0xa1 > fdrop(c1b41c60,0,3,c15d8d80,cc8e69d4) at fdrop+0x24 > closef(c1b41c60,0,c1703418,cc8e6a4c,c06762fc) at closef+0x35f > unp_discard(c1b41c60) at unp_discard+0x43 > unp_scan(c1703400,c0676384) at unp_scan+0x80 > unp_dispose(c1703400) at unp_dispose+0x15 > sorflush(c20ac000,c20dac18,c20ac000,cc8e6b18,c067387e) at sorflush+0x119 > unp_detach(c233c604,cc8e6b30,c066bb84,c20ac000,c20dac18) at unp_detach+0xc5 > uipc_detach(c20ac000) at uipc_detach+0x4a > soclose(c20ac000,c20dac18,0,cc8e6b5c,c0617fb8) at soclose+0x1e0 > soo_close(c20dac18,c15d8d80) at soo_close+0x4b > fdrop_locked(c20dac18,c15d8d80,c12f8ed4,0,c08571f2) at fdrop_locked+0x88 > fdrop(c20dac18,c15d8d80,cc8e6ba8,c0654740,c08571f2) at fdrop+0x24 > closef(c20dac18,c15d8d80) at closef+0x35f > fdfree(c15d8d80,c15fdb88,282754e4,c15d8d80,c0905500) at fdfree+0x473 > exit1(c15d8d80,100,cc8e6d30,c07f22fb,c15d8d80) at exit1+0x3f6 > exit1(c15d8d80,cc8e6d04,1,12b,292) at exit1 > syscall(3b,3b,3b,8089200,bfbfe67c) at syscall+0x22f > Xint0x80_syscall() at Xint0x80_syscall+0x1f > --- syscall (1, FreeBSD ELF32, sys_exit), eip = 0x281f3433, esp = 0xbfbfe2f0, ebp = 0xbfbfe30c --- > =========The end of the citation================ > > FreeBSD 6.0-BETA4 #0: Wed Sep 14, GENERIC kernel. > > -- > With best regards, Gleb Kozyrev. > > > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20050919140646.I99647>