From: Mark Goodman <mgoodman@CSUA.Berkeley.EDU>
To: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: nfs@lists.sourceforge.net
Subject: Re: Oops on killing process with soft-unmounted NFS3 krb5 mount
Date: Mon, 31 Jan 2005 20:53:15 -0800 [thread overview]
Message-ID: <41FF0B3B.9070806@csua.berkeley.edu> (raw)
In-Reply-To: <1107225341.16985.53.camel@lade.trondhjem.org>
Nope. Here is the new (unchanged?) oops.
Jan 31 20:31:51 soda kernel: net/sunrpc/rpc_pipe.c: rpc_lookup_parent=20
failed to find path /nfs/clnt0/krb5
Jan 31 20:31:51 soda kernel: Unable to handle kernel NULL pointer=20
dereference at virtual address 0000005c
Jan 31 20:31:51 soda kernel: printing eip:
Jan 31 20:31:51 soda kernel: f940ff40
Jan 31 20:31:51 soda kernel: *pde =3D 00000000
Jan 31 20:31:51 soda kernel: Oops: 0000 [#1]
Jan 31 20:31:51 soda kernel: Modules linked in: des nfs lockd parport_pc=20
lp parport autofs4 rpcsec_gss_krb5 auth_rpcgss sunrpc video button=20
battery ac md5 ipv6 uhci_hcd ehci_hcd snd_intel8x0 snd_ac97_codec=20
snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc=20
tg3 floppy dm_snapshot dm_zero dm_mirror ext3 jbd dm_mod ata_piix libata=20
sd_mod scsi_mod
Jan 31 20:31:51 soda kernel: CPU: 0
Jan 31 20:31:51 soda kernel: EIP: 0060:[<f940ff40>] Not tainted VLI
Jan 31 20:31:51 soda kernel: EFLAGS: 00010286 (2.6.11-rc2)
Jan 31 20:31:51 soda kernel: EIP is at gss_pipe_release+0x10/0x290=20
[auth_rpcgss]
Jan 31 20:31:51 soda kernel: eax: f7321600 ebx: 00000000 ecx:=20
00000073 edx: f940ff30
Jan 31 20:31:51 soda kernel: esi: f66251d0 edi: f6663f4c ebp:=20
00000000 esp: f6c92d00
Jan 31 20:31:51 soda kernel: ds: 007b es: 007b ss: 0068
Jan 31 20:31:51 soda kernel: Process bash (pid: 4336,=20
threadinfo=3Df6c92000 task=3Df64bd7b0)
Jan 31 20:31:51 soda kernel: Stack: f6c92d00 00000296 f74fd800 f74fd9c8=20
ffffffe0 00000000 f93d9126 f74fd800
Jan 31 20:31:51 soda kernel: f66251d0 f6663f4c 00000000 f93d92f9=20
f666336c f93d9d00 00000005 f6c92d90
Jan 31 20:31:51 soda kernel: f662f1ac 10ee271a f75039ac f6c92000=20
00000001 f66251d0 f6663d08 f74fdd00
Jan 31 20:31:51 soda kernel: Call Trace:
Jan 31 20:31:51 soda kernel: [<f93d9126>] __rpc_purge_upcall+0xa6/0xb0=20
[sunrpc]
Jan 31 20:31:51 soda kernel: [<f93d92f9>] rpc_close_pipes+0x89/0x90=20
[sunrpc]
Jan 31 20:31:51 soda kernel: [<f93d9d00>] rpc_depopulate+0x280/0x410=20
[sunrpc]
Jan 31 20:31:51 soda kernel: [<c018edcd>] cached_lookup+0x1d/0x80
Jan 31 20:31:51 soda kernel: [<c0190aaf>] __lookup_hash+0x5f/0xb0
Jan 31 20:31:51 soda kernel: [<f93da495>] rpc_rmdir+0x75/0xb0 [sunrpc]
Jan 31 20:31:51 soda kernel: [<f941040d>] gss_destroy+0x2d/0x70=20
[auth_rpcgss]
Jan 31 20:31:51 soda kernel: [<f93c44f4>] rpc_destroy_client+0x94/0xe0=20
[sunrpc]
Jan 31 20:31:51 soda kernel: [<c0185ed7>] kill_anon_super+0x87/0x180
Jan 31 20:31:51 soda kernel: [<f93c44dc>] rpc_destroy_client+0x7c/0xe0=20
[sunrpc]
Jan 31 20:31:51 soda kernel: [<c019a139>] dput+0x109/0x680
Jan 31 20:31:51 soda kernel: [<f954f1d5>] nfs_kill_super+0x35/0x70 [nfs]
Jan 31 20:31:51 soda kernel: [<c0183ed2>] deactivate_super+0xa2/0x120
Jan 31 20:31:51 soda kernel: [<c0126393>] do_exit+0x623/0x670
Jan 31 20:31:51 soda kernel: [<c0390396>] schedule_timeout+0xd6/0xe0
Jan 31 20:31:51 soda kernel: [<c0390396>] schedule_timeout+0xd6/0xe0
Jan 31 20:31:51 soda kernel: [<c012645b>] do_group_exit+0x3b/0x1f0
Jan 31 20:31:51 soda kernel: [<c0130123>] dequeue_signal+0x23/0xb0
Jan 31 20:31:51 soda kernel: [<c01334ee>] get_signal_to_deliver+0x49e/0x=
7a0
Jan 31 20:31:51 soda kernel: [<c025f827>] opost_block+0x97/0x140
Jan 31 20:31:51 soda kernel: [<c01037df>] do_signal+0x8f/0x150
Jan 31 20:31:51 soda kernel: [<c011d310>] default_wake_function+0x0/0x10
Jan 31 20:31:51 soda kernel: [<c025aba5>] tty_write+0xb5/0x280
Jan 31 20:31:51 soda kernel: [<c025aa6f>] tty_read+0xaf/0x130
Jan 31 20:31:51 soda kernel: [<c017b9b5>] vfs_read+0xd5/0x170
Jan 31 20:31:51 soda kernel: [<c0133b19>] sys_rt_sigprocmask+0x79/0x270
Jan 31 20:31:51 soda kernel: [<c017bd01>] sys_read+0x41/0x70
Jan 31 20:31:51 soda kernel: [<c01038d7>] do_notify_resume+0x37/0x3c
Jan 31 20:31:51 soda kernel: [<c0103a1e>] work_notifysig+0x13/0x15
Jan 31 20:31:51 soda kernel: Code: 44 24 04 e8 d3 2a d1 c6 e9 57 fe ff=20
ff 0f 0b e0 01 6c 47 41 f9 e9 82 fd ff ff 90 55 57 56 53 83 ec 1c 8b 80=20
bc 01 00 00 8b 58 1c <81> 7b 5c 3c 4b 24 1d 74 25 c7 04 24 14 48 41 f9=20
8d 43 5c be 04
Mark
Trond Myklebust wrote:
>m=E5 den 31.01.2005 Klokka 12:50 (-0800) skreiv Mark Goodman:
> =20
>
>>I am running 2.6.11-rc2 with your patches. I recall this behavior on=20
>>2.6.8 as well.
>>
>>I can consistently reproduce this oops on my Fedora Core 3 machine with=
=20
>>the following steps:
>>
>>Login as a normal user with a home directory on an NFS3 krb5 mount
>>Login as root and run init 1. init 1 unmounts the mount.
>>Kill the normal user's shell.
>>
>>In practice, this often happens when switching to runlevel 6 for a rebo=
ot.
>>
>>Jan 31 12:32:39 soda kernel: net/sunrpc/rpc_pipe.c: rpc_lookup_parent=20
>>failed to find path /nfs/clnt0/krb5
>> =20
>>
>
>OK. Looks like kill_litter_super() might be the culprit here:
>d_genocide() will give the above symptom. Does the appended patch work?
>
>Cheers
> Trond
>
> =20
>
>------------------------------------------------------------------------
>
>RPC: Fix an oopsable condition on detached mount of rpc_pipefs
>
> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
>---
> rpc_pipe.c | 2 +-
> 1 files changed, 1 insertion(+), 1 deletion(-)
>
>Index: linux-2.6.11-rc2/net/sunrpc/rpc_pipe.c
>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>--- linux-2.6.11-rc2.orig/net/sunrpc/rpc_pipe.c
>+++ linux-2.6.11-rc2/net/sunrpc/rpc_pipe.c
>@@ -795,7 +795,7 @@ static struct file_system_type rpc_pipe_
> .owner =3D THIS_MODULE,
> .name =3D "rpc_pipefs",
> .get_sb =3D rpc_get_sb,
>- .kill_sb =3D kill_litter_super,
>+ .kill_sb =3D kill_anon_super,
> };
>=20
> static void
> =20
>
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prev parent reply other threads:[~2005-02-01 4:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-31 20:50 Oops on killing process with soft-unmounted NFS3 krb5 mount Mark Goodman
2005-02-01 2:35 ` Trond Myklebust
2005-02-01 4:53 ` Mark Goodman [this message]
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