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Problems with nfs in 2.6.24

PATCH New Sven Müller 2 participants 3 messages Feb 24, 2008 – Mar 8, 2008 5 messages not in the archive

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Sven Müller

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Hi,

first the message I posted into the Gentoo-Forums:
http://forums.gentoo.org/viewtopic-t-295168-start-250.html#4895168

Problem:
On my computer I use Reiser4. When I try to access my computer via nfs from another computer I get a Kernel Ooops. I can still reboot the machine. But several things in a term don't work anymore without reboot.

The nfs-server starts without problems on my computer. The error occures only when someony tries to access.

The error is reproducible and occures always when try to access via nfs.

Kernel Ooops:

Feb 24 09:20:01 Blechkasten BUG: unable to handle kernel NULL pointer dereference at virtual address 00000050 
Feb 24 09:20:01 Blechkasten printing eip: c01a8b1a *pde = 00000000 
Feb 24 09:20:01 Blechkasten Oops: 0000 [#1] 
Feb 24 09:20:01 Blechkasten Modules linked in: libafs(P) lirc_i2c(F) lirc_dev nvidia(P) ne2k_pci 8390 
Feb 24 09:20:01 Blechkasten 
Feb 24 09:20:01 Blechkasten Pid: 4748, comm: nfsd Tainted: PF       (2.6.24-gentoo-r2 #3) 
Feb 24 09:20:01 Blechkasten EIP: 0060:[<c01a8b1a>] EFLAGS: 00010286 CPU: 0 
Feb 24 09:20:01 Blechkasten EIP is at max_item_size_node40+0xb/0x15 
Feb 24 09:20:01 Blechkasten EAX: 00000000 EBX: 00000002 ECX: f56c7eb4 EDX: c01ae024 
Feb 24 09:20:01 Blechkasten ESI: c04fc9e4 EDI: c04719da EBP: f4969bdc ESP: f4969b60 
Feb 24 09:20:01 Blechkasten cron[24875]: (root) CMD (test -x /usr/sbin/run-crons && /usr/sbin/run-crons ) 
Feb 24 09:20:03 Blechkasten DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 
Feb 24 09:20:03 Blechkasten Process nfsd (pid: 4748, ti=f4968000 task=f4e4a550 task.ti=f4968000) 
Feb 24 09:20:03 Blechkasten Stack: c01ae02f c019820d c01a86e2 ffffffdc c01a808b 0000000c f362c8b3 f4969c58 
Feb 24 09:20:03 Blechkasten f56c7eb4 00000014 00000282 0000fa80 d8f3550c 00000008 c531d000 c037d0ee 
Feb 24 09:20:03 Blechkasten c531d080 f4a0d4c6 00000008 00000000 00000000 00000000 f4a0d4c6 000002c6 
Feb 24 09:20:03 Blechkasten Call Trace: 
Feb 24 09:20:03 Blechkasten [<c01ae02f>] max_name_len_cde+0xb/0xf 
Feb 24 09:20:03 Blechkasten [<c019820d>] reiser4_max_filename_len+0x1e/0x1f 
Feb 24 09:20:03 Blechkasten [<c01a86e2>] is_name_acceptable_common+0x8/0x12 
Feb 24 09:20:03 Blechkasten [<c01a808b>] reiser4_lookup_name+0x2e/0xf4 
Feb 24 09:20:03 Blechkasten [<c037d0ee>] skb_copy_and_csum_bits+0x15e/0x29c 
Feb 24 09:20:03 Blechkasten [<c01a888a>] get_parent_common+0x50/0xbe 
Feb 24 09:20:03 Blechkasten [<c03f7426>] __mutex_lock_slowpath+0x1b7/0x1bf 
Feb 24 09:20:03 Blechkasten [<c037ec85>] memcpy_toiovec+0x27/0x4a 
Feb 24 09:20:03 Blechkasten [<c0196eef>] reiser4_get_dentry_parent+0x1b/0x1d 
Feb 24 09:20:03 Blechkasten [<c01e226a>] reconnect_path+0xa7/0x1d4 
Feb 24 09:20:03 Blechkasten [<c0162fe4>] find_inode+0x1b/0x56 
Feb 24 09:20:03 Blechkasten [<c01630af>] ifind+0x28/0x56 
Feb 24 09:20:03 Blechkasten [<c01634c9>] iget5_locked+0x3b/0x126 
Feb 24 09:20:03 Blechkasten [<c0197dbd>] reiser4_inode_find_actor+0x0/0x7e 
Feb 24 09:20:03 Blechkasten [<c0198167>] reiser4_iget+0x277/0x297 
Feb 24 09:20:03 Blechkasten [<c0197d88>] init_locked_inode+0x0/0x35 
Feb 24 09:20:03 Blechkasten [<c01620dc>] d_alloc+0x1c/0x172 
Feb 24 09:20:03 Blechkasten [<c0162489>] d_alloc_anon+0x3e/0xbb 
Feb 24 09:20:03 Blechkasten [<c019e66b>] wire_get_common+0x34/0x6b 
Feb 24 09:20:03 Blechkasten [<c0196f69>] reiser4_decode_fh+0x78/0x82 
Feb 24 09:20:03 Blechkasten [<c0197095>] reiser4_fh_to_dentry+0x2a/0x31 
Feb 24 09:20:03 Blechkasten [<c01e24dc>] exportfs_decode_fh+0x66/0x1a2 
Feb 24 09:20:03 Blechkasten [<c011189f>] enqueue_task_fair+0x16/0x24 
Feb 24 09:20:03 Blechkasten [<c0110da8>] enqueue_task+0xa/0x14 
Feb 24 09:20:03 Blechkasten [<c03ef4d5>] cache_check+0x59/0x390 
Feb 24 09:20:03 Blechkasten [<c01e83aa>] exp_get_by_name+0x43/0x52 
Feb 24 09:20:03 Blechkasten [<c01e8909>] expkey_match+0x50/0x5f 
Feb 24 09:20:03 Blechkasten [<c03ef4d5>] cache_check+0x59/0x390 
Feb 24 09:20:03 Blechkasten [<c011de0f>] set_current_groups+0x126/0x130 
Feb 24 09:20:03 Blechkasten [<c01ea240>] nfsd_setuser+0x120/0x16c 
Feb 24 09:20:03 Blechkasten [<c03e9c36>] svc_sendto+0x235/0x297 
Feb 24 09:20:03 Blechkasten [<c01e48f7>] nfsd_setuser_and_check_port+0x4f/0x57 
Feb 24 09:20:03 Blechkasten [<c01e8811>] exp_find+0x56/0x5e 
Feb 24 09:20:03 Blechkasten [<c01e8847>] rqst_exp_find+0x2e/0xa0 
Feb 24 09:20:03 Blechkasten [<c01e5007>] fh_verify+0x237/0x450 
Feb 24 09:20:03 Blechkasten [<c01e4d27>] nfsd_acceptable+0x0/0xa9 
Feb 24 09:20:03 Blechkasten [<c011178c>] dequeue_entity+0xb/0x2a 
Feb 24 09:20:03 Blechkasten [<c03ef7e3>] cache_check+0x367/0x390 
Feb 24 09:20:03 Blechkasten [<c01eb810>] nfsd3_proc_getattr+0x8b/0xb8 
Feb 24 09:20:03 Blechkasten [<c01e27df>] nfsd_dispatch+0xd3/0x1a0 
Feb 24 09:20:03 Blechkasten [<c03e942d>] svc_process+0x39f/0x686 
Feb 24 09:20:03 Blechkasten [<c01e2cd2>] nfsd+0x148/0x22a 
Feb 24 09:20:03 Blechkasten [<c01e2b8a>] nfsd+0x0/0x22a 
Feb 24 09:20:03 Blechkasten [<c0104767>] kernel_thread_helper+0x7/0x10 
Feb 24 09:20:03 Blechkasten ======================= 
Feb 24 09:20:03 Blechkasten Code: eb 04 66 8b 43 fa 5b 66 29 d0 0f b7 c0 c3 b8 01 00 00 00 c3 b8 01 00 00 00 c3 b8 01 00 00 00 c3 a1 00 f0 4e c0 8b 80 f8 04 00 00 <8b> 40 50 8b 40 0c 83 e8 42 c3 53 0f b7 48 04 8b 18 6b c9 26 8b 
Feb 24 09:20:03 Blechkasten EIP: [<c01a8b1a>] max_item_size_node40+0xb/0x15 SS:ESP 0068:f4969b60 
Feb 24 09:20:03 Blechkasten ---[ end trace bfd93292002efce2 ]---

System:
Gentoo Linux
Gentoo-Sources-2.6.24-r2 with Reiser4-Patch from Edward's Homepage:
http://chichkin_i.zelnet.ru/namesys/reiser4-for-2.6.24.patch.gz

emerge --info (first part):
Portage 2.1.4.4 (default-linux/x86/2007.0/desktop, gcc-4.2.3, glibc-2.7-r1, 2.6.24-gentoo-r2 i686)
=================================================================
System uname: 2.6.24-gentoo-r2 i686 AMD Athlon(tm) XP 2600+
Timestamp of tree: Sun, 24 Feb 2008 03:00:01 +0000
distcc 2.18.3 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] ccache version 2.4 [enabled]

app-shells/bash:     3.2_p33
dev-java/java-config: 1.3.7, 2.1.4
dev-lang/python:     2.5.1-r5
dev-util/ccache:     2.4-r7
sys-apps/baselayout: 2.0.0_rc6-r1
sys-apps/sandbox:    1.2.18.1-r2
sys-devel/autoconf:  2.13, 2.61-r1
sys-devel/automake:  1.4_p6, 1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.1
sys-devel/binutils:  2.18-r1
sys-devel/gcc-config: 1.4.0-r4
sys-devel/libtool:   1.5.26
virtual/os-headers:  2.6.24

ACCEPT_KEYWORDS="x86 ~x86"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -Os -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/splash /etc/terminfo /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS="-march=athlon-xp -Os -pipe -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoaddcvs ccache cvs distlocks fixpackages sandbox sfperms strict unmerge-orphans userfetch usersandbox"
GENTOO_MIRRORS="ftp.tu-chemnitz.de/pub/linux/gentoo http://ftp.tu-chemnitz.de/pub/linux/gentoo http://gentoo.osuosl.org/"
LANG="de_DE@euro"
LC_ALL="de_DE@euro"
LINGUAS="de"
MAKEOPTS="-j2"

Hope it helps.

Greetings
Sven

Signature · 2 lines
Psst! Geheimtipp: Online Games kostenlos spielen bei den GMX Free Games! 
http://games.entertainment.web.de/de/entertainment/games/free
#1 lore raw

Hello.

Would you please pack metadata by debugfs.reiser4 -P /dev/xxx | gzip > meta.gz and let me download the file meta.gz, if possible. What is the name of inaccessible object?

Thanks,
Edward.

Quoted 121 lines · Sven Müller

Hi,

first the message I posted into the Gentoo-Forums:
http://forums.gentoo.org/viewtopic-t-295168-start-250.html#4895168

Problem:
On my computer I use Reiser4. When I try to access my computer via nfs from another computer I get a Kernel Ooops. I can still reboot the machine. But several things in a term don't work anymore without reboot.

The nfs-server starts without problems on my computer. The error occures only when someony tries to access.

The error is reproducible and occures always when try to access via nfs.

Kernel Ooops:

 Feb 24 09:20:01 Blechkasten BUG: unable to handle kernel NULL pointer dereference at virtual address 00000050
 Feb 24 09:20:01 Blechkasten printing eip: c01a8b1a *pde = 00000000
 Feb 24 09:20:01 Blechkasten Oops: 0000 [#1]
 Feb 24 09:20:01 Blechkasten Modules linked in: libafs(P) lirc_i2c(F) lirc_dev nvidia(P) ne2k_pci 8390
 Feb 24 09:20:01 Blechkasten
 Feb 24 09:20:01 Blechkasten Pid: 4748, comm: nfsd Tainted: PF       (2.6.24-gentoo-r2 #3)
 Feb 24 09:20:01 Blechkasten EIP: 0060:[<c01a8b1a>] EFLAGS: 00010286 CPU: 0
 Feb 24 09:20:01 Blechkasten EIP is at max_item_size_node40+0xb/0x15
 Feb 24 09:20:01 Blechkasten EAX: 00000000 EBX: 00000002 ECX: f56c7eb4 EDX: c01ae024
 Feb 24 09:20:01 Blechkasten ESI: c04fc9e4 EDI: c04719da EBP: f4969bdc ESP: f4969b60
 Feb 24 09:20:01 Blechkasten cron[24875]: (root) CMD (test -x /usr/sbin/run-crons && /usr/sbin/run-crons )
 Feb 24 09:20:03 Blechkasten DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
 Feb 24 09:20:03 Blechkasten Process nfsd (pid: 4748, ti=f4968000 task=f4e4a550 task.ti=f4968000)
 Feb 24 09:20:03 Blechkasten Stack: c01ae02f c019820d c01a86e2 ffffffdc c01a808b 0000000c f362c8b3 f4969c58
 Feb 24 09:20:03 Blechkasten f56c7eb4 00000014 00000282 0000fa80 d8f3550c 00000008 c531d000 c037d0ee
 Feb 24 09:20:03 Blechkasten c531d080 f4a0d4c6 00000008 00000000 00000000 00000000 f4a0d4c6 000002c6
 Feb 24 09:20:03 Blechkasten Call Trace:
 Feb 24 09:20:03 Blechkasten [<c01ae02f>] max_name_len_cde+0xb/0xf
 Feb 24 09:20:03 Blechkasten [<c019820d>] reiser4_max_filename_len+0x1e/0x1f
 Feb 24 09:20:03 Blechkasten [<c01a86e2>] is_name_acceptable_common+0x8/0x12
 Feb 24 09:20:03 Blechkasten [<c01a808b>] reiser4_lookup_name+0x2e/0xf4
 Feb 24 09:20:03 Blechkasten [<c037d0ee>] skb_copy_and_csum_bits+0x15e/0x29c
 Feb 24 09:20:03 Blechkasten [<c01a888a>] get_parent_common+0x50/0xbe
 Feb 24 09:20:03 Blechkasten [<c03f7426>] __mutex_lock_slowpath+0x1b7/0x1bf
 Feb 24 09:20:03 Blechkasten [<c037ec85>] memcpy_toiovec+0x27/0x4a
 Feb 24 09:20:03 Blechkasten [<c0196eef>] reiser4_get_dentry_parent+0x1b/0x1d
 Feb 24 09:20:03 Blechkasten [<c01e226a>] reconnect_path+0xa7/0x1d4
 Feb 24 09:20:03 Blechkasten [<c0162fe4>] find_inode+0x1b/0x56
 Feb 24 09:20:03 Blechkasten [<c01630af>] ifind+0x28/0x56
 Feb 24 09:20:03 Blechkasten [<c01634c9>] iget5_locked+0x3b/0x126
 Feb 24 09:20:03 Blechkasten [<c0197dbd>] reiser4_inode_find_actor+0x0/0x7e
 Feb 24 09:20:03 Blechkasten [<c0198167>] reiser4_iget+0x277/0x297
 Feb 24 09:20:03 Blechkasten [<c0197d88>] init_locked_inode+0x0/0x35
 Feb 24 09:20:03 Blechkasten [<c01620dc>] d_alloc+0x1c/0x172
 Feb 24 09:20:03 Blechkasten [<c0162489>] d_alloc_anon+0x3e/0xbb
 Feb 24 09:20:03 Blechkasten [<c019e66b>] wire_get_common+0x34/0x6b
 Feb 24 09:20:03 Blechkasten [<c0196f69>] reiser4_decode_fh+0x78/0x82
 Feb 24 09:20:03 Blechkasten [<c0197095>] reiser4_fh_to_dentry+0x2a/0x31
 Feb 24 09:20:03 Blechkasten [<c01e24dc>] exportfs_decode_fh+0x66/0x1a2
 Feb 24 09:20:03 Blechkasten [<c011189f>] enqueue_task_fair+0x16/0x24
 Feb 24 09:20:03 Blechkasten [<c0110da8>] enqueue_task+0xa/0x14
 Feb 24 09:20:03 Blechkasten [<c03ef4d5>] cache_check+0x59/0x390
 Feb 24 09:20:03 Blechkasten [<c01e83aa>] exp_get_by_name+0x43/0x52
 Feb 24 09:20:03 Blechkasten [<c01e8909>] expkey_match+0x50/0x5f
 Feb 24 09:20:03 Blechkasten [<c03ef4d5>] cache_check+0x59/0x390
 Feb 24 09:20:03 Blechkasten [<c011de0f>] set_current_groups+0x126/0x130
 Feb 24 09:20:03 Blechkasten [<c01ea240>] nfsd_setuser+0x120/0x16c
 Feb 24 09:20:03 Blechkasten [<c03e9c36>] svc_sendto+0x235/0x297
 Feb 24 09:20:03 Blechkasten [<c01e48f7>] nfsd_setuser_and_check_port+0x4f/0x57
 Feb 24 09:20:03 Blechkasten [<c01e8811>] exp_find+0x56/0x5e
 Feb 24 09:20:03 Blechkasten [<c01e8847>] rqst_exp_find+0x2e/0xa0
 Feb 24 09:20:03 Blechkasten [<c01e5007>] fh_verify+0x237/0x450
 Feb 24 09:20:03 Blechkasten [<c01e4d27>] nfsd_acceptable+0x0/0xa9
 Feb 24 09:20:03 Blechkasten [<c011178c>] dequeue_entity+0xb/0x2a
 Feb 24 09:20:03 Blechkasten [<c03ef7e3>] cache_check+0x367/0x390
 Feb 24 09:20:03 Blechkasten [<c01eb810>] nfsd3_proc_getattr+0x8b/0xb8
 Feb 24 09:20:03 Blechkasten [<c01e27df>] nfsd_dispatch+0xd3/0x1a0
 Feb 24 09:20:03 Blechkasten [<c03e942d>] svc_process+0x39f/0x686
 Feb 24 09:20:03 Blechkasten [<c01e2cd2>] nfsd+0x148/0x22a
 Feb 24 09:20:03 Blechkasten [<c01e2b8a>] nfsd+0x0/0x22a
 Feb 24 09:20:03 Blechkasten [<c0104767>] kernel_thread_helper+0x7/0x10
 Feb 24 09:20:03 Blechkasten =======================
 Feb 24 09:20:03 Blechkasten Code: eb 04 66 8b 43 fa 5b 66 29 d0 0f b7 c0 c3 b8 01 00 00 00 c3 b8 01 00 00 00 c3 b8 01 00 00 00 c3 a1 00 f0 4e c0 8b 80 f8 04 00 00 <8b> 40 50 8b 40 0c 83 e8 42 c3 53 0f b7 48 04 8b 18 6b c9 26 8b
 Feb 24 09:20:03 Blechkasten EIP: [<c01a8b1a>] max_item_size_node40+0xb/0x15 SS:ESP 0068:f4969b60
 Feb 24 09:20:03 Blechkasten ---[ end trace bfd93292002efce2 ]---

System:
Gentoo Linux
Gentoo-Sources-2.6.24-r2 with Reiser4-Patch from Edward's Homepage:
http://chichkin_i.zelnet.ru/namesys/reiser4-for-2.6.24.patch.gz

emerge --info (first part):
Portage 2.1.4.4 (default-linux/x86/2007.0/desktop, gcc-4.2.3, glibc-2.7-r1, 2.6.24-gentoo-r2 i686)
=================================================================
System uname: 2.6.24-gentoo-r2 i686 AMD Athlon(tm) XP 2600+
Timestamp of tree: Sun, 24 Feb 2008 03:00:01 +0000
distcc 2.18.3 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] ccache version 2.4 [enabled]
app-shells/bash: 3.2_p33
dev-java/java-config: 1.3.7, 2.1.4
dev-lang/python: 2.5.1-r5
dev-util/ccache: 2.4-r7
sys-apps/baselayout: 2.0.0_rc6-r1

 sys-apps/sandbox:    1.2.18.1-r2
 sys-devel/autoconf:  2.13, 2.61-r1
 sys-devel/automake:  1.4_p6, 1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.1
 sys-devel/binutils:  2.18-r1

sys-devel/gcc-config: 1.4.0-r4
sys-devel/libtool: 1.5.26
virtual/os-headers: 2.6.24
ACCEPT_KEYWORDS="x86 ~x86"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -Os -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/splash /etc/terminfo /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS="-march=athlon-xp -Os -pipe -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoaddcvs ccache cvs distlocks fixpackages sandbox sfperms strict unmerge-orphans userfetch usersandbox"
GENTOO_MIRRORS="ftp.tu-chemnitz.de/pub/linux/gentoo http://ftp.tu-chemnitz.de/pub/linux/gentoo http://gentoo.osuosl.org/"
LANG="de_DE@euro"
LC_ALL="de_DE@euro"
LINGUAS="de"
MAKEOPTS="-j2"

Hope it helps.

Quoted 10 lines

Greetings
Sven
--
Psst! Geheimtipp: Online Games kostenlos spielen bei den GMX Free Games!
http://games.entertainment.web.de/de/entertainment/games/free
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#7 lore raw

PATCH 1/1 reiser4: new export_ops fixup

Quoted 24 lines · Sven Müller

Hi,

yesterday I tried a new kernel version (2.6.24-r3). And today in the morning I got the next kernel oops. The problem is still the same:

Access portage via nfs.

The file system should be consistent. At least my machine didn't crash since the last check. And I didn't get any other errors.

The kernel ooops message is:

Mar  7 08:23:46 Blechkasten su[7174]: + pts/4 sm:root
Mar  7 08:30:01 Blechkasten BUG: unable to handle kernel NULL pointer dereference at virtual address 00000050
Mar  7 08:30:01 Blechkasten printing eip: c01a8c7a *pde = 00000000 Mar  7 08:30:01 Blechkasten Oops: 0000 [#1] Mar  7 08:30:01 Blechkasten Modules linked in: libafs(P) lirc_i2c(F) lirc_dev nvidia(P) tuner tea5767 tda8290 tuner_simple mt20xx tea5761 bttv ir_common videobuf_dma_sg videobuf_core btcx_risc tveeprom
Mar  7 08:30:01 Blechkasten Mar  7 08:30:01 Blechkasten Pid: 3233, comm: nfsd Tainted: PF       (2.6.24-gentoo-r3 #1)
Mar  7 08:30:01 Blechkasten EIP: 0060:[<c01a8c7a>] EFLAGS: 00010286 CPU: 0
Mar  7 08:30:01 Blechkasten EIP is at max_item_size_node40+0xb/0x15
Mar  7 08:30:01 Blechkasten EAX: 00000000 EBX: 00000002 ECX: ec2352b4 EDX: c01ae184
Mar  7 08:30:01 Blechkasten ESI: c04dd9e4 EDI: c045a02a EBP: f4f8fbdc ESP: f4f8fb60
Mar  7 08:30:01 Blechkasten cron[30633]: (root) CMD (test -x /usr/sbin/run-crons && /usr/sbin/run-crons )
Mar  7 08:30:01 Blechkasten DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
Mar  7 08:30:01 Blechkasten Process nfsd (pid: 3233, ti=f4f8e000 task=f4f02ff0 task.ti=f4f8e000)
Mar  7 08:30:01 Blechkasten Stack: c01ae18f c019836d c01a8842 ffffffdc c01a81eb 0000000c 8e0d1a53 f4f8fc58 Mar  7 08:30:01 Blechkasten ec2352b4 f4f8fb9c 00000282 0000fa80 d0dddd00 00000074 e3d49000 c036957f Mar  7 08:30:01 Blechkasten e3d49000 f4921242 00000074 00000000 00000000 00000000 f4921242 00000042 Mar  7 08:30:01 Blechkasten Call Trace:
Mar  7 08:30:01 Blechkasten [<c01ae18f>] max_name_len_cde+0xb/0xf
Quoted 10 lines
Mar  7 08:30:01 Blechkasten [<c019836d>] reiser4_max_filename_len+0x1e/0x1f
Mar  7 08:30:01 Blechkasten [<c01a8842>] is_name_acceptable_common+0x8/0x12
Mar  7 08:30:01 Blechkasten [<c01a81eb>] reiser4_lookup_name+0x2e/0xf4
Mar  7 08:30:01 Blechkasten [<c036957f>] skb_copy_and_csum_bits+0x15f/0x29a
Mar  7 08:30:01 Blechkasten [<c01a89ea>] get_parent_common+0x50/0xbe
Mar  7 08:30:01 Blechkasten [<c03e38de>] __mutex_lock_slowpath+0x1b7/0x1bf
Mar  7 08:30:01 Blechkasten [<c036b115>] memcpy_toiovec+0x27/0x4a
Mar  7 08:30:01 Blechkasten [<c019704f>] reiser4_get_dentry_parent+0x1b/0x1d
                                        ^^^^^^^^^^^^^^^^^^^^^^^^^

oh.. the reiser4_context is missed here.
The attached patch will help.

Thanks,
Edward.

The fixup for reiser4-new-export_ops.patch:
Added missed reiser4_{init, exit}_context()

---
 linux-2.6.23-mm1/fs/reiser4/export_ops.c |   19 ++++++++++++++-----
 1 files changed, 14 insertions(+), 5 deletions(-)
fs/reiser4/export_ops.c renamed from fs/reiser4/export_ops.c.orig +14 -5
@@ -257,19 +257,28 @@
 {
 	struct inode *dir;
 	dir_plugin *dplug;
+	struct dentry *result;
+	reiser4_context *ctx;
 
 	assert("nikita-3527", child != NULL);
-	/* see comment in reiser4_get_dentry() about following assertion */
-	assert("nikita-3528", is_in_reiser4_context());
 
 	dir = child->d_inode;
 	assert("nikita-3529", dir != NULL);
+
+	ctx = reiser4_init_context(dir->i_sb);
+	if (IS_ERR(ctx))
+		return (void *)ctx;
+
 	dplug = inode_dir_plugin(dir);
 	assert("nikita-3531", ergo(dplug != NULL, dplug->get_parent != NULL));
-	if (dplug != NULL)
-		return dplug->get_parent(dir);
-	else
+
+	if (unlikely(dplug == NULL)) {
+		reiser4_exit_context(ctx);
 		return ERR_PTR(RETERR(-ENOTDIR));
+	}
+	result = dplug->get_parent(dir);
+	reiser4_exit_context(ctx);
+	return result;
 }
 
 /**