Date: Tue, 2 Jan 1996 16:17:38 +0100 (MET) From: grog@lemis.de (Greg Lehey) To: hackers@freebsd.org (FreeBSD Hackers) Subject: -current panics: vm_page_free: freeing busy page Message-ID: <199601021517.QAA18767@allegro.lemis.de>
next in thread | raw e-mail | index | archive | help
I've had a couple of panics with the latest -current (ctm-cvs 1510).
Here are the stack traces:
(kgdb) bt
#0 boot (howto=256) at ../../i386/i386/machdep.c:928
#1 0xf0118a25 in panic (fmt=0xf01a4f6b "vm_page_free: freeing busy page") at ../../kern/subr_prf.c:124
#2 0xf01a5182 in vm_page_free (mem=0xf026ac94) at ../../vm/vm_page.c:811
#3 0xf012c252 in vm_hold_free_pages (bp=0xf26eb5ec, froma=4080128000, toa=4080136192) at ../../kern/vfs_bio.c:1641
#4 0xf012b09a in allocbuf (bp=0xf26eb5ec, size=0) at ../../kern/vfs_bio.c:1060
#5 0xf012a9ae in getnewbuf (slpflag=0, slptimeo=0, doingvmio=0) at ../../kern/vfs_bio.c:736
#6 0xf012ae4f in getblk (vp=0xf0b3d880, blkno=54, size=8192, slpflag=0, slptimeo=0) at ../../kern/vfs_bio.c:970
#7 0xf0190922 in ffs_balloc (ip=0xf0b50900, bn=54, size=1471, cred=0xf0a2f380, bpp=0xefbffe58, flags=1)
at ../../ufs/ffs/ffs_balloc.c:261
#8 0xf0193b3d in ffs_write (ap=0xefbffe78) at ../../ufs/ufs/ufs_readwrite.c:255
#9 0xf010e75d in ktrwrite (vp=0xf0b3d880, kth=0xf0b55b00) at ./vnode_if.h:283
#10 0xf010e215 in ktrgenio (vp=0xf0b3d880, fd=3, rw=UIO_READ, iov=0xefbfff1c, len=4096, error=0)
at ../../kern/kern_ktrace.c:176
#11 0xf0119ec7 in read (p=0xf0b50800, uap=0xefbfff94, retval=0xefbfff8c) at ../../kern/sys_generic.c:121
#12 0xf01b3553 in syscall (frame={tf_es = 39, tf_ds = -272695257, tf_edi = 3, tf_esi = 4096, tf_ebp = -272649188,
tf_isp = -272629788, tf_ebx = -272649151, tf_edx = 104, tf_ecx = -272649160, tf_eax = 3, tf_trapno = 0,
tf_err = 582, tf_eip = 337569, tf_cs = 31, tf_eflags = 582, tf_esp = -272653320, tf_ss = 39})
at ../../i386/i386/trap.c:914
#13 0xf01ab6fd in Xsyscall ()
(kgdb) bt
#0 boot (howto=256) at ../../i386/i386/machdep.c:928
#1 0xf0118a25 in panic (fmt=0xf01a4f6b "vm_page_free: freeing busy page") at ../../kern/subr_prf.c:124
#2 0xf01a5182 in vm_page_free (mem=0xf0260770) at ../../vm/vm_page.c:811
#3 0xf012c252 in vm_hold_free_pages (bp=0xf26de0cc, froma=4076064768, toa=4076072960) at ../../kern/vfs_bio.c:1641
#4 0xf012b09a in allocbuf (bp=0xf26de0cc, size=0) at ../../kern/vfs_bio.c:1060
#5 0xf012a9ae in getnewbuf (slpflag=0, slptimeo=0, doingvmio=1) at ../../kern/vfs_bio.c:736
#6 0xf012ae4f in getblk (vp=0xf0a7c500, blkno=0, size=8192, slpflag=0, slptimeo=0) at ../../kern/vfs_bio.c:970
#7 0xf012c92e in cluster_read (vp=0xf0a7c500, filesize=34020, lblkno=0, size=8192, cred=0xffffffff, bpp=0xefbffeb8)
at ../../kern/vfs_cluster.c:138
#8 0xf0193771 in ffs_read (ap=0xefbffee0) at ../../ufs/ufs/ufs_readwrite.c:123
#9 0xf013396a in vn_read (fp=0xf0b3be40, uio=0xefbfff2c, cred=0xf0b38f00) at ./vnode_if.h:255
#10 0xf0119e77 in read (p=0xf0b2f500, uap=0xefbfff94, retval=0xefbfff8c) at ../../kern/sys_generic.c:114
#11 0xf01b3553 in syscall (frame={tf_es = 39, tf_ds = 39, tf_edi = 134360088, tf_esi = 0, tf_ebp = -272641464,
tf_isp = -272629788, tf_ebx = 134316128, tf_edx = 101, tf_ecx = 134360088, tf_eax = 3, tf_trapno = 12,
tf_err = 535, tf_eip = 134274309, tf_cs = 31, tf_eflags = 535, tf_esp = -272641544, tf_ss = 39})
at ../../i386/i386/trap.c:914
#12 0xf01ab6fd in Xsyscall ()
One possible connection: I was using ktrace in both cases.
It would be nice to know which page was suffering from this problem.
Can anybody tell me how to do it?
Greg
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199601021517.QAA18767>