Date: Wed, 14 Sep 2011 13:50:51 -0700 From: Garrett Cooper <yanegomi@gmail.com> To: Konstantin Belousov <kib@freebsd.org>, John Baldwin <jhb@freebsd.org> Cc: svn-src-head@freebsd.org, FreeBSD Current <freebsd-current@freebsd.org>, fs@freebsd.org Subject: Re: svn commit: r225474 - in head/sys: amd64/amd64 amd64/ia32 i386/i386 ia64/ia32 ia64/ia64 kern powerpc/aim powerpc/booke sparc64/sparc64 sys Message-ID: <CAGH67wTOFspfeALbJvNoWq4ysdw%2BETfRMpAWLJtRGBSKMCMupQ@mail.gmail.com> In-Reply-To: <201109111605.p8BG59cc084589@svn.freebsd.org> References: <201109111605.p8BG59cc084589@svn.freebsd.org>
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On Sun, Sep 11, 2011 at 9:05 AM, Konstantin Belousov <kib@freebsd.org> wrot= e: > Author: kib > Date: Sun Sep 11 16:05:09 2011 > New Revision: 225474 > URL: http://svn.freebsd.org/changeset/base/225474 > > Log: > =A0Inline the syscallenter() and syscallret(). This reduces the time meas= ured > =A0by the syscall entry speed microbenchmarks by ~10% on amd64. > > =A0Submitted by: jhb > =A0Approved by: =A0re (bz) > =A0MFC after: =A0 =A02 weeks This change completely breaks ZFS mounting (for some odd reason) with the following backtrace. #0 doadump (textdump=3D0) at /usr/src/sys/kern/kern_shutdown.c:260 260 /usr/src/sys/kern/kern_shutdown.c: No such file or directory. in /usr/src/sys/kern/kern_shutdown.c (kgdb) #0 doadump (textdump=3D0) at /usr/src/sys/kern/kern_shutdown.c:260 #1 0xffffffff802b1cd0 in db_dump (dummy=3DVariable "dummy" is not availabl= e. ) at /usr/src/sys/ddb/db_command.c:537 #2 0xffffffff802b12c1 in db_command (last_cmdp=3D0xffffffff809b96c0, cmd_table=3DVariable "cmd_table" is not available. ) at /usr/src/sys/ddb/db_command.c:448 #3 0xffffffff802b1510 in db_command_loop () at /usr/src/sys/ddb/db_command.c:501 #4 0xffffffff802b3664 in db_trap (type=3DVariable "type" is not available. ) at /usr/src/sys/ddb/db_main.c:229 #5 0xffffffff804b29d1 in kdb_trap (type=3D3, code=3D0, tf=3D0xffffff8231a5= f3d0) at /usr/src/sys/kern/subr_kdb.c:631 #6 0xffffffff80646ac8 in trap (frame=3D0xffffff8231a5f3d0) at /usr/src/sys/amd64/amd64/trap.c:590 #7 0xffffffff8063113f in calltrap () at /usr/src/sys/amd64/amd64/exception.S:228 #8 0xffffffff804b277b in kdb_enter (why=3D0xffffffff806e022b "panic", msg=3D0x80 <Address 0x80 out of bounds>) at cpufunc.h:63 #9 0xffffffff8047db5c in panic (fmt=3DVariable "fmt" is not available. ) at /usr/src/sys/kern/kern_shutdown.c:599 #10 0xffffffff8046e5cc in _mtx_assert (m=3DVariable "m" is not available. ) at /usr/src/sys/kern/kern_mutex.c:706 #11 0xffffffff80620f31 in vm_page_free_toq (m=3D0xfffffe021bf3d1f0) at /usr/src/sys/vm/vm_page.c:1756 #12 0xffffffff80c77938 in zfs_freebsd_getpages () from /boot/kernel/zfs.ko #13 0xffffffff8046ebd6 in _mtx_unlock_flags (m=3D0xfffffe0006dc7000, opts=3D421100272, file=3D0xfffffe0006dc70e8 "=B8P=CE\200=FF=FF=FF=FF", = line=3D1) at /usr/src/sys/kern/kern_mutex.c:223 Previous frame inner to this frame (corrupt stack?) (kgdb) Here's my system info: $ uname -a FreeBSD streetfighter.ixsystems.com 9.0-BETA2 FreeBSD 9.0-BETA2 #2 r225558M: Wed Sep 14 12:09:35 PDT 2011 gcooper@streetfighter.ixsystems.com:/usr/obj/usr/src/sys/STREETFIGHTER amd64 $ mount /dev/ada0p2 on / (ufs, local, soft-updates) devfs on /dev (devfs, local) tank/scratch on /scratch (zfs, local, nfsv4acls) tank/usr on /usr (zfs, local, nfsv4acls) tank/usr/home on /usr/home (zfs, local, nfsv4acls) tank/usr/src on /usr/src (zfs, local, nfsv4acls) tank/var on /var (zfs, local, nfsv4acls) I tried inspecting 'm' (the mutex), but the value had been optimized out (for some odd reason). I can provide more details offline if interested. Thanks, -Garrett
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