* Re: [Qemu-devel] kqemu freebsd host smp problems?
2005-07-04 0:37 ` Bakul Shah
@ 2005-07-10 4:39 ` Norikatsu Shigemura
2005-07-10 11:10 ` Antony T Curtis
0 siblings, 1 reply; 4+ messages in thread
From: Norikatsu Shigemura @ 2005-07-10 4:39 UTC (permalink / raw)
To: qemu-devel, freebsd-current
Cc: Craig Boston, jhb, jeff, alc, Bakul Shah, Juergen Lock
On Sun, 03 Jul 2005 17:37:42 -0700
Bakul Shah <bakul@BitBlocks.com> wrote:
> Lock writes:
> > Is kqemu and the freebsd wrapper smp aware? I just saw this panic
> > report again,
> > http://lists.freebsd.org/pipermail/freebsd-current/2005-May/050161.html
> > and noticed it apparently happened with an smp kernel.
> My guess is
> .d_flags = D_NEEDGIANT,
> needs to be added to the initializer of kqemu_cdevsw for the
> freebsd-current case. AFAIK this flag ensures only one
> thread can be in this driver at a time (but caveat emptor: I
> don't play in the kernel these days).
I confirmed that qemu on latest FreeBSD 6-current got more
stability!!, but more little slowly:-( and a panic:-( too.
Now I'm testing improved qemu port:
http://tmp.ninth-nine.com/qemu/qemu.20050708-2.port.tar.bz2
1. Merge /dev/kqemu cloning support to kmod_bsd.c.
Obtained from: http://lists.gnu.org/archive/html/qemu-devel/2005-06/msg00135.html
Submitted by: Craig Boston <craig@xfoil.gank.org>
> $ fstat /dev/kqemu*
> USER CMD PID FD MOUNT INUM MODE SZ|DV R/W NAME
> nork qemu 33805 5 /dev 168 crw-rw---- #C:0:0x0 rw /dev/kqemu1
> root qemu 20779 6 /dev 152 crw-rw---- #C:0:0x0 rw /dev/kqemu0
In this time, I'm installing Windows XP SP2 and FreeBSD 5.4-R.
2. Giant-lock kqemu.ko.
Obtained from: http://lists.gnu.org/archive/html/qemu-devel/2005-07/msg00070.html
Suggested by: Bakul Shah <bakul@BitBlocks.com>
3. Add experimental IDE WDMA support.
Obtained from: I forgot:-(
Submitted by(AFAIK): Juergen Lock <qemu-l@jelal.kn-bremen.de>
4. Utilize BSDMakefile to compile kqemu.ko, and cosmetic change.
I contacted a panic. Please check following message.
PANIC MESSAGE ON CONSOLE:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
FreeBSD/i386 (nadesico.ninth-nine.com) (dcons)
login: info: [drm] Loading R200 Microcode
info: [drm] Loading R200 Microcode
panic: vm_page_insert: page already inserted
cpuid = 0
KDB: enter: panic
[thread pid 49875 tid 100270 ]
Stopped at kdb_enter+0x30: leave
db> tr
Tracing pid 49875 tid 100270 td 0xc3374480
kdb_enter(c06672e3,0,c067582a,efc55870,c50b1b60) at kdb_enter+0x30
panic(c067582a,c3374480,2,c1a99178,2) at panic+0x14e
vm_page_insert(c1a99178,c60e19cc,5d2c,0,c11d3030) at vm_page_insert+0x2a
vm_page_alloc(c60e19cc,5d2c,0,222,d65549d8) at vm_page_alloc+0x348
allocbuf(d65549d8,4000,0,4000,3863b048) at allocbuf+0x721
getblk(c50b1aa0,174b,0,4000,0) at getblk+0x5ad
ffs_balloc_ufs2(c50b1aa0,5d2c000,0,1000,c345d300) at ffs_balloc_ufs2+0x1b67
ffs_write(efc55be8,efc55b94,4,0,0) at ffs_write+0x389
VOP_WRITE_APV(c069ade0,efc55be8,c3374480,c2325c00,0) at VOP_WRITE_APV+0xec
vn_write(c3259a20,efc55cb0,c345d300,0,c3374480) at vn_write+0x240
dofilewrite(c3374480,4,c3259a20,efc55cb0,ffffffff) at dofilewrite+0x85
kern_writev(c3374480,4,efc55cb0,804e000,1000) at kern_writev+0x65
write(c3374480,efc55d04,c,c3374480,efc55d2c) at write+0x4f
syscall(3b,3b,bfbf003b,1000,682b2258) at syscall+0x370
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (4, FreeBSD ELF32, write), eip = 0x682148bf, esp = 0xbfbfd8fc, ebp =
0xbfbfd918 ---
db> show pcpu 0
cpuid = 0
curthread = 0xc3374480: pid 49875 "fetch"
curpcb = 0xefc55d90
fpcurthread = none
idlethread = 0xc22d7900: pid 12 "idle: cpu0"
APIC ID = 0
currentldt = 0x50
db> show pcpu 1
cpuid = 1
curthread = 0xc328e900: pid 20779 "qemu"
curpcb = 0xefbbfd90
fpcurthread = none
idlethread = 0xc22d7780: pid 11 "idle: cpu1"
APIC ID = 1
currentldt = 0x50
db> call doadump()
Dumping 1023 MB (2 chunks)
chunk 0: 1MB (159 pages) ... ok
chunk 1: 1023MB (261872 pages) 1007 991 975 959 943 927 911 895 879 863 847 831 815 799 783 767 751 735 719 703 687 671 655 639 623 607 591 575 559 543 527 511 495 479 463 447 431 415 399 383 367 351 335 319 303 287 271 255 239 223 207 191 175 159 143 127 111 95 79 63 47 31 15 ... ok
Dump complete
= 0xf
db> reset
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# kgdb /boot/kernel/kernel.debug /var/crash/vmcore.0
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(snip)
(kgdb) where
#0 doadump () at pcpu.h:165
#1 0xc0431b66 in db_fncall (dummy1=-272279900, dummy2=0, dummy3=9600,
dummy4=0xefc55688 "`\004p潜\003") at /usr/src/sys/ddb/db_command.c:489
#2 0xc04318e2 in db_command (last_cmdp=0xc06a85e4, cmd_table=0x0,
aux_cmd_tablep=0xc067cb40, aux_cmd_tablep_end=0xc067cb44)
at /usr/src/sys/ddb/db_command.c:349
#3 0xc04319f5 in db_command_loop () at /usr/src/sys/ddb/db_command.c:455
#4 0xc0433ba5 in db_trap (type=3, code=0) at /usr/src/sys/ddb/db_main.c:221
#5 0xc04d5ece in kdb_trap (type=0, code=0, tf=0xefc557e8)
at /usr/src/sys/kern/subr_kdb.c:473
#6 0xc06434c8 in trap (frame=
{tf_fs = 8, tf_es = 40, tf_ds = -272302040, tf_edi = 256, tf_esi = 1, tf_ebp = -272279504, tf_isp = -272279532, tf_ebx = -272279440, tf_edx = 0, tf_ecx = -1056755712, tf_eax = 18, tf_trapno = 3, tf_err = 0, tf_eip = -1068672096, tf_cs = 32, tf_eflags = 642, tf_esp = -1067021478, tf_ss = -1067027741})
at /usr/src/sys/i386/i386/trap.c:600
#7 0xc062ec5a in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#8 0x00000008 in ?? ()
#9 0x00000028 in ?? ()
#10 0xefc50028 in ?? ()
#11 0x00000100 in ?? ()
#12 0x00000001 in ?? ()
#13 0xefc55830 in ?? ()
#14 0xefc55814 in ?? ()
#15 0xefc55870 in ?? ()
#16 0x00000000 in ?? ()
#17 0xc1033000 in ?? ()
#18 0x00000012 in ?? ()
#19 0x00000003 in ?? ()
#20 0x00000000 in ?? ()
#21 0xc04d5ba0 in kdb_enter (msg=0x0) at cpufunc.h:60
#22 0xc04b553e in panic (
fmt=0xc067582a "vm_page_insert: page already inserted")
at /usr/src/sys/kern/kern_shutdown.c:537
#23 0xc05fb8fa in vm_page_insert (m=0xc1a99178, object=0xc60e19cc, pindex=Unhandled dwarf expression opcode 0x93
)
at /usr/src/sys/vm/vm_page.c:539
#24 0xc05fc018 in vm_page_alloc (object=0xc60e19cc, pindex=23852, req=546)
at /usr/src/sys/vm/vm_page.c:867
#25 0xc0510241 in allocbuf (bp=0xd65549d8, size=16384)
at /usr/src/sys/kern/vfs_bio.c:2770
#26 0xc050fa9d in getblk (vp=0xc50b1aa0, blkno=5963, size=16384, slpflag=0,
slptimeo=0, flags=0) at /usr/src/sys/kern/vfs_bio.c:2541
#27 0xc05b73e7 in ffs_balloc_ufs2 (vp=0xc50b1aa0, startoffset=Unhandled dwarf expression opcode 0x93
)
at /usr/src/sys/ufs/ffs/ffs_balloc.c:817
---Type <return> to continue, or q <return> to quit---
#28 0xc05d1b49 in ffs_write (ap=0xefc55be8)
at /usr/src/sys/ufs/ffs/ffs_vnops.c:662
#29 0xc064f5bc in VOP_WRITE_APV (vop=0xc069ade0, a=0xefc55be8)
at vnode_if.c:698
#30 0xc0530660 in vn_write (fp=0xc3259a20, uio=0xefc55cb0,
active_cred=0xc345d300, flags=0, td=0xc3374480) at vnode_if.h:372
#31 0xc04e29e5 in dofilewrite (td=0xc3374480, fd=0, fp=0xc3259a20,
auio=0xefc55cb0, offset=Unhandled dwarf expression opcode 0x93
) at file.h:246
#32 0xc04e2805 in kern_writev (td=0xc3374480, fd=4, auio=0x0)
at /usr/src/sys/kern/sys_generic.c:402
#33 0xc04e26bf in write (td=0x0, uap=0x0)
at /usr/src/sys/kern/sys_generic.c:326
#34 0xc0643f80 in syscall (frame=
{tf_fs = 59, tf_es = 59, tf_ds = -1078001605, tf_edi = 4096, tf_esi = 1747657304, tf_ebp = -1077946088, tf_isp = -272278172, tf_ebx = 1747579940, tf_edx = 134537216, tf_ecx = 134574080, tf_eax = 4, tf_trapno = 0, tf_err = 2, tf_eip = 1747011775, tf_cs = 51, tf_eflags = 534, tf_esp = -1077946116, tf_ss = 59})
at /usr/src/sys/i386/i386/trap.c:985
#35 0xc062ecaf in Xint0x80_syscall () at /usr/src/sys/i386/i386/exception.s:200
#36 0x0000003b in ?? ()
#37 0x0000003b in ?? ()
#38 0xbfbf003b in ?? ()
#39 0x00001000 in ?? ()
#40 0x682b2258 in ?? ()
#41 0xbfbfd918 in ?? ()
#42 0xefc55d64 in ?? ()
#43 0x6829f424 in ?? ()
#44 0x0804e000 in ?? ()
#45 0x08057000 in ?? ()
#46 0x00000004 in ?? ()
#47 0x00000000 in ?? ()
#48 0x00000002 in ?? ()
#49 0x682148bf in ?? ()
#50 0x00000033 in ?? ()
#51 0x00000216 in ?? ()
#52 0xbfbfd8fc in ?? ()
#53 0x0000003b in ?? ()
#54 0x49806749 in ?? ()
#55 0x67498067 in ?? ()
#56 0x80674980 in ?? ()
#57 0x49806749 in ?? ()
#58 0x19b2c000 in ?? ()
#59 0xc255ea3c in ?? ()
#60 0xc3374480 in ?? ()
---Type <return> to continue, or q <return> to quit---
#61 0xefc55c94 in ?? ()
#62 0xefc55c78 in ?? ()
#63 0xc22d8300 in ?? ()
#64 0xc04cc0c0 in sched_switch (td=0x682b2258, newtd=0x6829f424, flags=Cannot access memory at address 0xbfbfd928
)
at /usr/src/sys/kern/sched_4bsd.c:973
Previous frame inner to this frame (corrupt stack?)
(kgdb) x/72b 0xc1a99178
0xc1a99178: 0x40 0xab 0x4c 0xc1 0x60 0xf5 0x6f 0xc0
0xc1a99180: 0xc0 0xa1 0xff 0xc1 0x38 0xfd 0xe8 0xc1
0xc1a99188: 0x30 0xfd 0xe8 0xc1 0xc0 0xa1 0xff 0xc1
0xc1a99190: 0x38 0x97 0x70 0xc3 0x1a 0xd4 0x00 0x00
0xc1a99198: 0x00 0x00 0x00 0x00 0x00 0x80 0x27 0x24
0xc1a991a0: 0x01 0x00 0x00 0x00 0x88 0x52 0x22 0xe1
0xc1a991a8: 0x90 0x52 0x22 0xe1 0x00 0x00 0x00 0x00
0xc1a991b0: 0x78 0x00 0x01 0x00 0x00 0x00 0x00 0x00
0xc1a991b8: 0x00 0x00 0x00 0x00 0x00 0xff 0x00 0x00
(kgdb)
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^ permalink raw reply [flat|nested] 4+ messages in thread