Re: stable/9 r225827 i386 panic: vm_page_unwire: page 0xc2a38dc8's wire count is zero

From: Alexandr Kovalenko <alexandr.kovalenko_at_gmail.com>
Date: Thu, 29 Sep 2011 15:51:53 +0300
2011/9/29 Kostik Belousov <kostikbel_at_gmail.com>:
> On Thu, Sep 29, 2011 at 03:47:19PM +0300, Alexandr Kovalenko wrote:
>> On Thu, Sep 29, 2011 at 3:30 PM, Kostik Belousov <kostikbel_at_gmail.com> wrote:
>> > On Thu, Sep 29, 2011 at 02:52:31PM +0300, Alexandr Kovalenko wrote:
>> >> Hello!
>> >>
>> >> I'm running 9.0-BETA3 (r225827) and now rebuilding all my 1215 ports
>> >> (I've upgraded from 8.2). I'm getting panic. Is it known
>> >> problem/already fixed somewhere?
>> >>
>> >> FreeBSD mile.xxx.ua 9.0-BETA3 FreeBSD 9.0-BETA3 #0 r225827: Wed Sep 28
>> >> 17:11:17 EEST 2011     root_at_mile.xxx.ua:/usr/obj/usr/src/sys/mile-9
>> >> i386
>> >>
>> >> Unread portion of the kernel message buffer:
>> >> panic: vm_page_unwire: page 0xc2a38dc8's wire count is zero
>> >> cpuid = 1
>> >> Uptime: 16h6m53s
>> >> Physical memory: 1904 MB
>> >> Dumping 367 MB: 352 336 320 304 288 272 256 240 224 208 192 176 160
>> >> 144 128 112 96 80 64 48 32 16
>> >>
>> >> #0  doadump (textdump=1) at pcpu.h:244
>> >> #1  0xc071e5cb in kern_reboot (howto=260)
>> >>     at /usr/src/sys/kern/kern_shutdown.c:442
>> >> #2  0xc071e82b in panic (fmt=Variable "fmt" is not available.
>> >> ) at /usr/src/sys/kern/kern_shutdown.c:607
>> >> #3  0xc0966903 in vm_page_unwire (m=0xc2a38dc8, activate=0)
>> >>     at /usr/src/sys/vm/vm_page.c:1905
>> > Please do "frame 2", then "p/x *m" and show the result.
>>
>> (kgdb) frame 2
> frame 3, sorry. "p/x *(struct vm_page *)0xc2a38dc8" will do it as well.

(kgdb) frame 3
#3  0xc0966903 in vm_page_unwire (m=0xc2a38dc8, activate=0) at
/usr/src/sys/vm/vm_page.c:1905
1905                    panic("vm_page_unwire: page %p's wire count is
zero", m);
(kgdb) p/x *(struct vm_page *)0xc2a38dc8
$1 = {pageq = {tqe_next = 0xc2a38e10, tqe_prev = 0xc282a2b0}, listq =
{tqe_next = 0xc2a38e10, tqe_prev = 0xc282a2b8}, left = 0x0, right =
0x0, object = 0xc5725770, pindex = 0xbd3, phys_addr = 0x56a32000, md =
{pv_list = {tqh_first = 0xc3cc6418, tqh_last = 0xc3cc641c},
    pat_mode = 0x6}, queue = 0x1, segind = 0x2, hold_count = 0x0,
order = 0xb, pool = 0x0, cow = 0x0, wire_count = 0x0, aflags = 0x3,
flags = 0x0, oflags = 0x0, act_count = 0x5, busy = 0x0, valid = 0xff,
dirty = 0xff}


>> #2  0xc071e82b in panic (fmt=Variable "fmt" is not available.) at
>> /usr/src/sys/kern/kern_shutdown.c:607
>> 607             kern_reboot(bootopt);
>> (kgdb) p/x *m
>> No symbol "m" in current context.
>>
>>
>> >> #4  0xc0796b80 in vfs_vmio_release (bp=0xde8bcbf4)
>> >>     at /usr/src/sys/kern/vfs_bio.c:1638
>> >> #5  0xc0798813 in getnewbuf (vp=0xc6ea3550, slpflag=0, slptimeo=0,
>> >>     size=16384, maxsize=16384, gbflags=0) at /usr/src/sys/kern/vfs_bio.c:1949
>> >> #6  0xc0799f2a in getblk (vp=0xc6ea3550, blkno=2520, size=16384, slpflag=0,
>> >>     slptimeo=0, flags=Variable "flags" is not available.
>> >> ) at /usr/src/sys/kern/vfs_bio.c:2788
>> >> #7  0xc079d49c in cluster_rbuild (vp=0xc6ea3550, filesize=44505088, lbn=2520,
>> >>     blkno=1209440, size=16384, run=Variable "run" is not available.
>> >> ) at /usr/src/sys/kern/vfs_cluster.c:332
>> >> #8  0xc079e145 in cluster_read (vp=0xc6ea3550, filesize=44505088,
>> >>     lblkno=2520, size=16384, cred=0x0, totread=1024, seqcount=7,
>> >>     bpp=0xf5824b60) at /usr/src/sys/kern/vfs_cluster.c:254
>> >> #9  0xc0934cf5 in ffs_read (ap=0xf5824bac)
>> >>     at /usr/src/sys/ufs/ffs/ffs_vnops.c:514
>> >> #10 0xc09ccb92 in VOP_READ_APV (vop=0xc0aa6a80, a=0xf5824bac)
>> >>     at vnode_if.c:887
>> >> #11 0xc07c1120 in vn_read (fp=0xc5474508, uio=0xf5824c48,
>> >>     active_cred=0xc56a4d80, flags=1, td=0xc5b76b80) at vnode_if.h:384
>> >> #12 0xc076380e in dofileread (td=0xc5b76b80, fd=3, fp=0xc5474508,
>> >>     auio=0xf5824c48, offset=41189376, flags=1) at file.h:254
>> >> #13 0xc07639f5 in kern_preadv (td=0xc5b76b80, fd=3, auio=0xf5824c48,
>> >>     offset=41189376) at /usr/src/sys/kern/sys_generic.c:288
>> >> #14 0xc0763b0d in sys_pread (td=0xc5b76b80, uap=0xf5824cec)
>> >>     at /usr/src/sys/kern/sys_generic.c:189
>> >> #15 0xc09accf5 in syscall (frame=0xf5824d28) at subr_syscall.c:131
>> >> #16 0xc0996db1 in Xint0x80_syscall ()
>> >>     at /usr/src/sys/i386/i386/exception.s:266
>> >> #17 0x00000033 in ?? ()
>> >> Previous frame inner to this frame (corrupt stack?)
>> >>
>> >> --
>> >> Alexandr Kovalenko
>> >> http://uafug.org.ua/
>> >> _______________________________________________
>> >> freebsd-stable_at_freebsd.org mailing list
>> >> http://lists.freebsd.org/mailman/listinfo/freebsd-stable
>> >> To unsubscribe, send any mail to "freebsd-stable-unsubscribe_at_freebsd.org"
>> >
>>
>>
>>
>> --
>> Alexandr Kovalenko
>> http://uafug.org.ua/
>



-- 
Alexandr Kovalenko
http://uafug.org.ua/
Received on Thu Sep 29 2011 - 10:51:54 UTC

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