Gentoo Archives: gentoo-user

From: Florian Klink <flokli@××××××.de>
To: gentoo-user@l.g.o
Subject: [gentoo-user] nfsd: random nfsd crashes
Date: Wed, 18 Feb 2009 19:07:14
Message-Id: 1234984018.3283.26.camel@localhost
hi,

i'm having here a gentoo ~x86 server running on 2.6.29-rc4. It has a nfs
server for booting diskless clients.
In dmesg I see random crashes of nfsd, which cause the clients to hang
until i reboot the server. Restarting /etc/init.d/nfs hangs at "Starting
NFS daemon...".

using nfs-utils-1.1.4-r1

kernel config:
---------------snip-----------------
cat linux/.config|grep -i nfs
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
CONFIG_NFS_V3_ACL=y
CONFIG_NFS_V4=y
CONFIG_ROOT_NFS=y
CONFIG_NFSD=m
CONFIG_NFSD_V2_ACL=y
CONFIG_NFSD_V3=y
CONFIG_NFSD_V3_ACL=y
# CONFIG_NFSD_V4 is not set
CONFIG_NFS_ACL_SUPPORT=y
CONFIG_NFS_COMMON=y
---------------snap-----------------

dmesg output:
---------------snip-----------------
[   23.818334] Installing knfsd (copyright (C) 1996 okir@×××××××××.de).
[   23.893486] rpc.nfsd used greatest stack depth: 5604 bytes left
[78016.584819] BUG: unable to handle kernel NULL pointer dereference at
00000004
[78016.584827] IP: [<c116235b>] inode_has_perm+0x21/0x67
[78016.584839] *pde = 00000000 
[78016.584846] Oops: 0000 [#1] SMP 
[78016.584904] last sysfs file: /sys/kernel/uevent_seqnum
[78016.584956] Modules linked in: nfsd exportfs tun snd_intel8x0
snd_ac97_codec ac97_bus snd_pcm snd_timer snd soundcore snd_page_alloc
[78016.585080] 
[78016.585128] Pid: 2151, comm: nfsd Not tainted (2.6.29-rc4 #2)
OptiPlex GX270               
[78016.585225] EIP: 0060:[<c116235b>] EFLAGS: 00010246 CPU: 0
[78016.585278] EIP is at inode_has_perm+0x21/0x67
[78016.585329] EAX: 00000000 EBX: 00000000 ECX: 00000002 EDX: d9835290
[78016.585386] ESI: d55e4880 EDI: f12bbf00 EBP: f107fe30 ESP: f107fddc
[78016.585439]  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[78016.585492] Process nfsd (pid: 2151, ti=f107e000 task=f6c76880
task.ti=f107e000)
[78016.585586] Stack:
[78016.585632]  00000004 f6774d80 00000002 c115f766 f107fdfc c10889b3
00000044 d9835290
[78016.585700]  f107fe10 f7f3b0d9 f6774d80 f105a200 00000000 f107fe90
f7f3a88d f107fe20
[78016.585715]  c101da2e f107fe28 00000002 d55e4880 d9835290 f107fe4c
c1163543 00000000
[78016.585715] Call Trace:
[78016.585715]  [<c115f766>] ? security_inode_permission+0x1a/0x20
[78016.585715]  [<c10889b3>] ? inode_permission+0x78/0x83
[78016.585715]  [<f7f3b0d9>] ? nfsd_permission+0x8e/0xda [nfsd]
[78016.585715]  [<f7f3a88d>] ? fh_verify+0x45f/0x525 [nfsd]
[78016.585715]  [<c101da2e>] ? need_resched+0x14/0x1e
[78016.585715]  [<c1163543>] ? selinux_dentry_open+0xb0/0xb8
[78016.585715]  [<c115eeec>] ? security_dentry_open+0xf/0x11
[78016.585715]  [<c1080f36>] ? __dentry_open+0xef/0x1e8
[78016.585715]  [<c1081ed0>] ? dentry_open+0x5c/0x67
[78016.585715]  [<f7f3bb59>] ? nfsd_open+0x101/0x125 [nfsd]
[78016.585715]  [<f7f3be98>] ? nfsd_read+0x5f/0x99 [nfsd]
[78016.585715]  [<f7f39edc>] ? nfsd_proc_read+0xec/0x120 [nfsd]
[78016.585715]  [<c13dc33d>] ? cache_check+0x55/0x376
[78016.585715]  [<c106df6b>] ? page_address+0x15/0x7c
[78016.585715]  [<f7f401f9>] ? nfssvc_decode_readargs+0xa8/0xaf [nfsd]
[78016.585715]  [<f7f381eb>] ? nfsd_dispatch+0xcf/0x19e [nfsd]
[78016.585715]  [<c13d7118>] ? svc_process+0x34a/0x558
[78016.585715]  [<f7f38778>] ? nfsd+0x117/0x167 [nfsd]
[78016.585715]  [<f7f38661>] ? nfsd+0x0/0x167 [nfsd]
[78016.585715]  [<c1035f11>] ? kthread+0x3b/0x62
[78016.585715]  [<c1035ed6>] ? kthread+0x0/0x62
[78016.585715]  [<c100374b>] ? kernel_thread_helper+0x7/0x10
[78016.585715] Code: 04 89 46 68 5b 89 d0 5e 5d c3 55 89 e5 57 89 c7 56
31 c0 53 83 ec 48 89 4d b4 8b 5d 08 f6 82 45 01 00 00 02 75 43 8b 47 58
85 db <8b> 70 04 8b 82 4c 01 00 00 89 45 b0 75 19 8d 7d bc b9 0e 00 00 
[78016.585715] EIP: [<c116235b>] inode_has_perm+0x21/0x67 SS:ESP
0068:f107fddc
[78016.587989] ---[ end trace 9bc36c246382c5e4 ]---
[78016.588095] nfsd used greatest stack depth: 5276 bytes left
[78016.590769] BUG: unable to handle kernel NULL pointer dereference at
00000004
[78016.590926] IP: [<c116235b>] inode_has_perm+0x21/0x67
[78016.591061] *pde = 00000000 
[78016.591175] Oops: 0000 [#2] SMP 
[78016.591320] last sysfs file: /sys/kernel/uevent_seqnum
[78016.591404] Modules linked in: nfsd exportfs tun snd_intel8x0
snd_ac97_codec ac97_bus snd_pcm snd_timer snd soundcore snd_page_alloc
[78016.591933] 
[78016.592012] Pid: 2155, comm: nfsd Tainted: G      D    (2.6.29-rc4
#2) OptiPlex GX270               
[78016.592056] EIP: 0060:[<c116235b>] EFLAGS: 00010246 CPU: 0
[78016.592056] EIP is at inode_has_perm+0x21/0x67
[78016.592056] EAX: 00000000 EBX: 00000000 ECX: 00000002 EDX: d9835290
[78016.592056] ESI: d55e4780 EDI: f12bb100 EBP: f1103e30 ESP: f1103ddc
[78016.592056]  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[78016.592056] Process nfsd (pid: 2155, ti=f1102000 task=f6c73900
task.ti=f1102000)
[78016.592056] Stack:
[78016.592056]  00000004 f6774d80 00000002 c115f766 f1103dfc c10889b3
00000044 d9835290
[78016.592056]  f1103e10 f7f3b0d9 f6774d80 f105ba00 00000000 f1103e90
f7f3a88d f1103e20
[78016.592056]  c101da2e f1103e28 00000002 d55e4780 d9835290 f1103e4c
c1163543 00000000
[78016.592056] Call Trace:
[78016.592056]  [<c115f766>] ? security_inode_permission+0x1a/0x20
[78016.592056]  [<c10889b3>] ? inode_permission+0x78/0x83
[78016.592056]  [<f7f3b0d9>] ? nfsd_permission+0x8e/0xda [nfsd]
[78016.592056]  [<f7f3a88d>] ? fh_verify+0x45f/0x525 [nfsd]
[78016.592056]  [<c101da2e>] ? need_resched+0x14/0x1e
[78016.592056]  [<c1163543>] ? selinux_dentry_open+0xb0/0xb8
[78016.592056]  [<c115eeec>] ? security_dentry_open+0xf/0x11
[78016.592056]  [<c1080f36>] ? __dentry_open+0xef/0x1e8
[78016.592056]  [<c1081ed0>] ? dentry_open+0x5c/0x67
[78016.592056]  [<f7f3bb59>] ? nfsd_open+0x101/0x125 [nfsd]
[78016.592056]  [<f7f3be98>] ? nfsd_read+0x5f/0x99 [nfsd]
[78016.592056]  [<f7f39edc>] ? nfsd_proc_read+0xec/0x120 [nfsd]
[78016.592056]  [<c13dc33d>] ? cache_check+0x55/0x376
[78016.592056]  [<c106df6b>] ? page_address+0x15/0x7c
[78016.592056]  [<f7f401f9>] ? nfssvc_decode_readargs+0xa8/0xaf [nfsd]
[78016.592056]  [<f7f381eb>] ? nfsd_dispatch+0xcf/0x19e [nfsd]
[78016.592056]  [<c13d7118>] ? svc_process+0x34a/0x558
[78016.592056]  [<f7f38778>] ? nfsd+0x117/0x167 [nfsd]
[78016.592056]  [<f7f38661>] ? nfsd+0x0/0x167 [nfsd]
[78016.592056]  [<c1035f11>] ? kthread+0x3b/0x62
[78016.592056]  [<c1035ed6>] ? kthread+0x0/0x62
[78016.592056]  [<c100374b>] ? kernel_thread_helper+0x7/0x10
[78016.592056] Code: 04 89 46 68 5b 89 d0 5e 5d c3 55 89 e5 57 89 c7 56
31 c0 53 83 ec 48 89 4d b4 8b 5d 08 f6 82 45 01 00 00 02 75 43 8b 47 58
85 db <8b> 70 04 8b 82 4c 01 00 00 89 45 b0 75 19 8d 7d bc b9 0e 00 00 
[78016.592056] EIP: [<c116235b>] inode_has_perm+0x21/0x67 SS:ESP
0068:f1103ddc
[78016.599214] ---[ end trace 9bc36c246382c5e5 ]---
---------------snap-----------------



Any ideas?