Re: netbsd-6: rump_nfs crash

[Aleksey Cheusov <cheusov%tut.by@localhost>]

On Tue, Jul 17, 2012 at 2:35 PM, Aleksey Cheusov <cheusov%tut.by@localhost> 
wrote:
> I tried to use rump_nfs instead of kernel space implementation
> and found it just doesn't work. rump_nfs(8) initially succeeds but quickly
> crashes like the following.

And then kernel panic just after mount_nfs(8) invocation.

#0  0xc05ba748 in maybe_dump (howto=260) at
/srv/src_netbsd6/sys/arch/i386/i386/machdep.c:878
878                     dumpsys();
#0  0xc05ba748 in maybe_dump (howto=260) at
/srv/src_netbsd6/sys/arch/i386/i386/machdep.c:878
#1  cpu_reboot (howto=260, bootstr=0x0) at
/srv/src_netbsd6/sys/arch/i386/i386/machdep.c:899
#2  0xc07a4eba in vpanic (fmt=0xc0bf5287 "trap", ap=0xf4245a14
"\264Z$\364\264Z$\364st\213\300\b") at
/srv/src_netbsd6/sys/kern/subr_pr     f.c:308
#3  0xc07a4f5f in panic (fmt=0xc0bf5287 "trap") at
/srv/src_netbsd6/sys/kern/subr_prf.c:205
#4  0xc07f8bd0 in trap (frame=0xf4245ab4) at
/srv/src_netbsd6/sys/arch/i386/i386/trap.c:396
#5  0xc010d08f in ?? ()
#6  0xc0570acf in layerfs_statvfs (mp=0xc3ee1000, sbp=0xc3de9000) at
/srv/src_netbsd6/sys/miscfs/genfs/layer_vfsops.c:160
#7  0xc08b7476 in VFS_STATVFS (mp=0xc3ee1000, a=0xc3de9000) at
/srv/src_netbsd6/sys/kern/vfs_subr.c:1036
#8  0xc08b9828 in dostatvfs (mp=0xc3ee1000, sp=0xc3de9000,
l=0xc3ea92c0, flags=1, root=0) at
/srv/src_netbsd6/sys/kern/vfs_syscalls.c:1     030
#9  0xc08b9b3f in do_sys_getvfsstat (l=0xc3ea92c0, sfsp=0xbb918518,
bufsize=211660, flags=1, copyfn=0xc01008f0, entry_sz=2228, retval=0
 xf4245d1c) at /srv/src_netbsd6/sys/kern/vfs_syscalls.c:1184
#10 0xc08b9cf3 in sys_getvfsstat (l=0xc3ea92c0, uap=0xf4245cf4,
retval=0xf4245d1c) at /srv/src_netbsd6/sys/kern/vfs_syscalls.c:1236
#11 0xc07c072d in sy_call (rval=0xf4245d1c, uap=0xf4245cf4,
l=0xc3ea92c0, sy=0xc0c83810) at
/srv/src_netbsd6/sys/sys/syscallvar.h:61
#12 syscall (frame=0xf4245d48) at
/srv/src_netbsd6/sys/arch/x86/x86/syscall.c:179
#13 0xc01005d6 in ?? ()

> #0  0xbb9fab97 in _lwp_kill () from /usr/lib/libc.so.12
> #1  0xbb9fab4f in raise (s=6) at /srv/src_netbsd6/lib/libc/gen/raise.c:48
> #2  0xbb9fa433 in abort () at /srv/src_netbsd6/lib/libc/stdlib/abort.c:74
> #3  0xbba654e9 in rumpuser_exit (rv=-1)
>     at /srv/src_netbsd6/lib/librumpuser/rumpuser.c:541
> #4  0xbbafb40f in cpu_reboot (howto=4, bootstr=0x0)
>     at /srv/src_netbsd6/lib/librump/../../sys/rump/librump/rumpkern/rump.c:558
> #5  0xbbacd3a0 in vpanic (fmt=0xbbb98f0d "no such socket", ap=0xbfbfdd74 "")
>     at /srv/src_netbsd6/lib/librump/../../sys/rump/../kern/subr_prf.c:308
> #6  0xbbacd3c5 in panic (fmt=0xbbb98f0d "no such socket")
>     at /srv/src_netbsd6/lib/librump/../../sys/rump/../kern/subr_prf.c:205
> #7  0xbbb983ea in removesock (so=0xb935de44)
>     at /srv/src_netbsd6/sys/rump/net/lib/libsockin/sockin.c:158
> #8  0xbbb98e65 in sockin_usrreq (so=0xb935de44, req=7, m=0x0, nam=0x0,
> control=0x0,
>     l=0x0) at /srv/src_netbsd6/sys/rump/net/lib/libsockin/sockin.c:473
> #9  0xbbbab2bc in soshutdown (so=0xb935de44, how=2)
>     at 
> /srv/src_netbsd6/lib/librumpnet/../../sys/rump/../kern/uipc_socket.c:1610
> #10 0xbbbdc980 in nfs_disconnect (nmp=0xb9357c40)
>     at 
> /srv/src_netbsd6/sys/rump/fs/lib/libnfs/../../../../nfs/nfs_socket.c:396
> #11 0xbbbdd891 in nfs_reconnect (rep=0xb935c038)
>     at 
> /srv/src_netbsd6/sys/rump/fs/lib/libnfs/../../../../nfs/nfs_socket.c:362
> #12 0xbbbd395f in nfs_receive (l=0xb9350900, mp=0xbfbfe114, aname=0xbfbfe110,
>     rep=0xb935c038)
>     at 
> /srv/src_netbsd6/sys/rump/fs/lib/libnfs/../../../../nfs/nfs_clntsocket.c:157
> #13 nfs_reply (lwp=0xb9350900, myrep=0xb935c038)
>     at 
> /srv/src_netbsd6/sys/rump/fs/lib/libnfs/../../../../nfs/nfs_clntsocket.c:352
> #14 nfs_request (np=0xb9358e9c, mrest=0xb9356800, procnum=1, lwp=0xb9350900,
>     cred=0xbb7a4c00, mrp=0xbfbfe1e4, mdp=0xbfbfe1e0, dposp=0xbfbfe1e8,
> rexmitp=0x0)
>     at 
> /srv/src_netbsd6/sys/rump/fs/lib/libnfs/../../../../nfs/nfs_clntsocket.c:688
> #15 0xbbbc0836 in nfs_getattr (v=0xbfbfe220)
>     at /srv/src_netbsd6/sys/rump/fs/lib/libnfs/../../../../nfs/nfs_vnops.c:582
> #16 0xbbac2a53 in VOP_GETATTR (vp=0xb9338580, vap=0xb800e080, cred=0xbb7a4c00)
>     at /srv/src_netbsd6/lib/librump/../../sys/rump/../kern/vnode_if.c:330
> #17 0xbbb46fdb in RUMP_VOP_GETATTR (vp=0xb9338580, vap=0xb800e080,
> cred=0xbb7a4c00)
>     at 
> /srv/src_netbsd6/lib/librumpvfs/../../sys/rump/librump/rumpvfs/rumpvnode_if.c:160
> #18 0xbbb93718 in p2k_node_getattr (pu=0xbb70d800, opc=0xb8006040,
> vap=0xb800e080,
>     pcr=0xb800e02c) at /srv/src_netbsd6/lib/libp2k/p2k.c:911
> #19 0xbba52ffc in dispatch (pcc=0xbba5b780)
>     at /srv/src_netbsd6/lib/libpuffs/dispatcher.c:458
> #20 0xbba5405e in puffs__ml_dispatch (pu=0xbb70d800, pb=0xb8001100)
>     at /srv/src_netbsd6/lib/libpuffs/dispatcher.c:64
> #21 0xbba52804 in puffs__fsframe_gotframe (pu=0xbb70d800, pb=0xb8001100)
>     at /srv/src_netbsd6/lib/libpuffs/requests.c:238
> #22 0xbba56815 in puffs__framev_input (pu=0xbb70d800,
> fctrl=0xbb70dc84, fio=0xb80040c0)
>     at /srv/src_netbsd6/lib/libpuffs/framebuf.c:701
> #23 0xbba58b28 in puffs__theloop (pcc=<optimized out>)
>     at /srv/src_netbsd6/lib/libpuffs/puffs.c:903
> #24 0xbba56ed9 in puffs_cc_continue (pcc=0xbba5b780)
>     at /srv/src_netbsd6/lib/libpuffs/callcontext.c:136
> #25 0xbba58f3d in puffs_mainloop (pu=0xbb70d800)
>     at /srv/src_netbsd6/lib/libpuffs/puffs.c:1021
> #26 0xbbb94cad in p2k_mainloop (p2m=0xbb760000) at
> /srv/src_netbsd6/lib/libp2k/p2k.c:512
> #27 0xbbb94d6e in p2k_run_fs (vfsname=0x804abda "nfs",
>     devpath=0xbfbfe9bc "syn-proc7:/shared/syntagma7",
>     mountpath=0xbfbfe5bc "/shared/syntagma7", mntflags=0,
> arg=0xbfbfe570, alen=72,
>     puffs_flags=8) at /srv/src_netbsd6/lib/libp2k/p2k.c:538
> #28 0x0804a687 in main (argc=9, argv=0xbfbfee34)
>     at /srv/src_netbsd6/usr.sbin/puffs/rump_nfs/rump_nfs.c:56