Date: Fri, 1 Oct 1999 10:48:32 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: bag@sinbin.demos.su (Alex G. Bulushev) Cc: mishania@demos.net (Mikhail A. Sokolov), stable@FreeBSD.ORG Subject: Re: 3.3-stable nfsv3/udp server panic (was: Re: vm_fault: fault on nofault entry) Message-ID: <199910011748.KAA27210@apollo.backplane.com> References: <199910010737.LAA39229@sinbin.demos.su>
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:> Hi,
:>
:> we're experiencing panics on 3.3-stable as of 21st of September,
:> which looks alike the ones, which were happening with 3.[12] versions.
:
:panic before (once per 1-2 day) was for SMP kernel, new one
:is for kernel without SMP on the same nfs server, now after 7.5 day of work
This looks like a very solvable crash, and you have a nice debugable
dump.
I suspect the problem may be an out-of-bounds or odd entryoffsetinblock
value in frame 5. Please do the following from gdb:
frame 5
print *bp
print *dp
print ep
print entryoffsetinblock
And it may be better to take this off the list and into private email.
If I can't figure it out from that I may need access to the dump and
debug kernel binary.
-Matt
Matthew Dillon
<dillon@backplane.com>
:#4 0xc01edd7a in trap (frame={tf_es = 16, tf_ds = -1022492656,
: tf_edi = 14436, tf_esi = -1022433536, tf_ebp = -757249380,
: tf_isp = -757249532, tf_ebx = -838711196, tf_edx = -847782512,
: tf_ecx = 8191, tf_eax = 39012, tf_trapno = 12, tf_err = 0,
: tf_eip = -1071897493, tf_cs = 8, tf_eflags = 66178, tf_esp = -755096640,
: tf_ss = -757248584}) at ../../i386/i386/trap.c:437
:#5 0xc01c246b in ufs_lookup (ap=0xd2dd4ad8) at ../../ufs/ufs/ufs_lookup.c:238
:#6 0xc01c727d in ufs_vnoperate (ap=0xd2dd4ad8)
: at ../../ufs/ufs/ufs_vnops.c:2299
:#7 0xc015c4a4 in vfs_cache_lookup (ap=0xd2dd4b34) at vnode_if.h:55
:#8 0xc01c727d in ufs_vnoperate (ap=0xd2dd4b34)
: at ../../ufs/ufs/ufs_vnops.c:2299
:#9 0xc015e975 in lookup (ndp=0xd2dd4d94) at vnode_if.h:31
:#10 0xc019e639 in nfs_namei (ndp=0xd2dd4d94, fhp=0xd2dd4d0c, len=2,
: slp=0xc2fa6e00, nam=0xc3d1b060, mdp=0xd2dd4c48, dposp=0xd2dd4c44,
:---Type <return> to continue, or q <return> to quit---
: retdirp=0xd2dd4c2c, p=0xd2d7af40, kerbflag=0, pubflag=0)
: at ../../nfs/nfs_subs.c:1662
:#11 0xc0187277 in nfsrv_lookup (nfsd=0xc3608d00, slp=0xc2fa6e00,
: procp=0xd2d7af40, mrq=0xd2dd4e34) at ../../nfs/nfs_serv.c:476
:#12 0xc01a0106 in nfssvc_nfsd (nsd=0xd2dd4e94, argp=0x8071f04 "", p=0xd2d7af40)
: at ../../nfs/nfs_syscalls.c:656
:#13 0xc019fa21 in nfssvc (p=0xd2d7af40, uap=0xd2dd4f94)
: at ../../nfs/nfs_syscalls.c:342
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