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

On Thu, Sep 29, 2011 at 04:12:19PM +0300, Alexandr Kovalenko wrote:
> 2011/9/29 Kostik Belousov <kostikbel_at_gmail.com>:
> > On Thu, Sep 29, 2011 at 03:51:53PM +0300, Alexandr Kovalenko wrote:
> >> 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?
> > Do you use custom kernel config ? Is there a chance you have ZERO_COPY_SOCKETS
> > option enabled ?
> 
> Yes, ZERO_COPY_SOCKETS is there.
Ok, this is the cause. Remove it.

I asked for some additional data below, which you ignored, but I believe
that I will not see anything new there, after we found the ZERO_COPY_SOCKETS
in kernel config.

> 
> 
> 
> >
> >> >> >>
> >> >> >> 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}
> >
> > Please show the output of "p *(struct vm_object *)0xc5725770" from kgdb.
> >>
> >>
> >> >> #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/
> >> >> >> _______________________________________________
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> >> >> >
> >> >>
> >> >>
> >> >>
> >> >> --
> >> >> Alexandr Kovalenko
> >> >> http://uafug.org.ua/
> >> >
> >>
> >>
> >>
> >> --
> >> Alexandr Kovalenko
> >> http://uafug.org.ua/
> >
> 
> 
> 
> -- 
> Alexandr Kovalenko
> http://uafug.org.ua/