Re: [NetBSD-7] Panic in nfsd

[christos%astron.com@localhost (Christos Zoulas)]

In article <568AD402.5070506%systella.fr@localhost>,
BERTRAND Joël  <joel.bertrand%systella.fr@localhost> wrote:
>	Hello,
>
>	I have installed a FreeBSD diskless client on a NetBSD server (x86 i7 
>64 bits). This afternoon, this server crashes without any usable dump 
>(as it has paniced twice, rootfs was corrupted). Panic occurs when nfs 
>client did a lot of concurrent nfs access. In message, I only have :
>
>Jan  4 17:07:23 legendre /netbsd: vpanic() at netbsd:vpanic+0x13c
>Jan  4 17:07:23 legendre /netbsd: snprintf() at netbsd:snprintf
>Jan  4 17:07:23 legendre /netbsd: ufs_dirbadentry() at 
>netbsd:ufs_dirbadentry
>Jan  4 17:07:23 legendre /netbsd: ufs_lookup() at netbsd:ufs_lookup+0x4c3
>Jan  4 17:07:23 legendre /netbsd: VOP_LOOKUP() at netbsd:VOP_LOOKUP+0x34
>Jan  4 17:07:23 legendre /netbsd: lookup_once() at netbsd:lookup_once+0x18b
>Jan  4 17:07:23 legendre /netbsd: namei_tryemulroot() at 
>netbsd:namei_tryemulroot+0x612
>Jan  4 17:07:23 legendre /netbsd: lookup_for_nfsd() at 
>netbsd:lookup_for_nfsd+0x4e
>Jan  4 17:07:23 legendre /netbsd: nfs_namei() at netbsd:nfs_namei+0x1ca
>Jan  4 17:07:23 legendre /netbsd: nfsrv_lookup() at 
>netbsd:nfsrv_lookup+0x264
>Jan  4 17:07:23 legendre /netbsd: do_nfssvc() at netbsd:do_nfssvc+0x41d
>Jan  4 17:07:23 legendre /netbsd: syscall() at netbsd:syscall+0x9a
>Jan  4 17:07:23 legendre /netbsd: --- syscall (number 155) ---
>
>	Kernel is built from netbsd-7 CVS tree (28th of december 2015).
>I haven't seen recently any similar issue. Client has mounted its rootfs 
>with following options : TCP, vers=3.
>
>	Does someone has seen the same trouble ?

Can you try with a DEBUG/DIAGNOSTIC/LOCKDEBUG kernel?

christos