Re: 6.1/amd64 panic in ufs_fhtovp

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Thu, Jun 20, 2013 at 04:16:23PM +0200, Edgar Fuß wrote:
> This happened on my 6.1/amd64 NFS server:
> 
> uvm_fault(0xfffffe8419d06490, 0x0, 1) -> e
> fatal page fault in supervisor mode
> trap type 6 code 0 rip ffffffff803fa3d1 cs 8 rflags 10246 cr2  c8 cpl 0 rsp 
> ff fe811db1e660
> kernel: page fault trap, code=0
> stopped in pid 430.2 (nfsd) at  netbsd:ufs_fhtovp+0x2e: cmpw    $0,c8(%rdx)
> 
> uvs_fhtovp() at netbsd:uvs_fhtovp+0x2e
> ffs_fhtovp() at netbsd:ffs_fhtovp+0x55
> VFS_FHTOVP() at netbsd:VFS_FHTOVP+0x1c
> nfsrvc_fhtovp() at netbsd:nfsrv_fhtovv+0x9a
> nfsrvc_write() at netbsd:nfsrvc_write+0x502
> nfssvc_nfsd at netbsd:nfssvc_nfsd+0x1d7
> sys_nfssvc() at netbsd:sys_nfssvc+0x22c
> syscall() at netbsd:syscall+0xc4


looks like, again, a race with the vnode cache.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--