Bug#270779: marked as done (kernel-source-2.6.8: Can't mount /home nfs?)
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and subject line Bug#270779: kernel-source-2.6.8: Can't mount /home nfs?
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Date: Thu, 09 Sep 2004 12:08:04 +0300
From: Shaul Karl <shaulk@013.net>
Subject: kernel-source-2.6.8: Can't mount /home nfs?
Sender: Shaul Karl <shaulk@013.net>
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Package: kernel-source-2.6.8
Version: 2.6.8-5
Severity: normal
1) I got these sources by patching pristine Linux source with
kernel-patch-debian-2.6.8-5. I do hope I got the same source that is
provided by kernel-source-2.6.8-5.
2) 2.6.8-2 is working. nfs is pretty much unusable, but not to the extent
that is demonstared below by 2.6.8-5.
3) In contrast to 2.6.8-2, when I booted 2.6.8-5 for the first time and
then ssh -X from another machine, I got:
Unable to handle kernel NULL pointer dereference at virtual address 00000014
printing eip:
*pde = 00000000
Oops: 0002 [#1]
Modules linked in: ppp_deflate zlib_deflate bsd_comp ppp_async crc_ccitt ne2k_pci ppp_generic slhc af_packet nfs lockd sunrpc ne 8390 crc32 3c59x ipt_multiport ipt_LOG ipt_limit ipt_state ipt_mac iptable_filter ipt_MASQUERADE ipt_REDIRECT ip_nat_ftp iptable_nat ip_tables ip_conntrack_ftp ip_conntrack dm_mod rtc ide_cd cdrom ext3 jbd ide_generic ide_disk generic ide_core unix ext2 mbcache
CPU: 0
EIP: 0060:[<c89b2765>] Not tainted
EFLAGS: 00010246 (2.6.8-5.pentium1.1)
EIP is at nfs3_request_init+0x15/0x20 [nfs]
eax: 00000000 ebx: c5d76620 ecx: c6119100 edx: c76fa804
esi: c10bbe80 edi: c5d76620 ebp: c63b2000 esp: c63b3c28
ds: 007b es: 007b ss: 0068
Process xauth (pid: 709, threadinfo=c63b2000 task=c65dd240)
Stack: c5d76620 c89aba3c c5d76620 c6119100 c7dcc800 c76fa804 00000000 00000001
00000004 c10bbe80 0000009b c76fa804 00000000 c89ae1d8 c6119100 c76fa804
c10bbe80 00000000 0000009b c63b3d0c c63b3d0c c10bbe98 c10bbe80 c63b3db8
Call Trace:
[<c89aba3c>] nfs_create_request+0x9c/0xd0 [nfs]
[<c89ae1d8>] readpage_async_filler+0x58/0x100 [nfs]
[<c0130290>] read_cache_pages+0xb0/0x130
[<c8954c95>] rpc_release_task+0xe5/0x160 [sunrpc]
[<c8954715>] __rpc_execute+0x315/0x3b0 [sunrpc]
[<c0114070>] autoremove_wake_function+0x0/0x40
[<c0113444>] __wake_up+0x14/0x20
[<c0114070>] autoremove_wake_function+0x0/0x40
[<c89ae2cb>] nfs_readpages+0x4b/0xa0 [nfs]
[<c89ae180>] readpage_async_filler+0x0/0x100 [nfs]
[<c013041f>] read_pages+0x10f/0x120
[<c012d9f3>] buffered_rmqueue+0xe3/0x190
[<c012db4f>] __alloc_pages+0xaf/0x320
[<c012dce3>] __alloc_pages+0x243/0x320
[<c013066e>] do_page_cache_readahead+0xbe/0x130
[<c01307cf>] page_cache_readahead+0xef/0x1d0
[<c012a6a0>] do_generic_mapping_read+0x90/0x3d0
[<c012ac68>] __generic_file_aio_read+0x1a8/0x1e0
[<c012a9e0>] file_read_actor+0x0/0xe0
[<c012b1cc>] filemap_nopage+0x1dc/0x330
[<c012ace1>] generic_file_aio_read+0x41/0x60
[<c89a7586>] nfs_file_read+0x86/0xc0 [nfs]
[<c0142926>] do_sync_read+0x76/0xb0
[<c0138a84>] do_mmap_pgoff+0x524/0x660
[<c01429ec>] vfs_read+0x8c/0xd0
[<c0142bed>] sys_read+0x3d/0x70
[<c01055c7>] syscall_call+0x7/0xb
Code: ff 40 14 89 43 18 5b c3 8d 76 00 8b 4c 24 04 8b 51 0c 3b 54
4) Not sure why the eip value is not printed above. Could be due to a
serial communucation problem. I don't know how important that is.
Shortly afterwards I tried to ssh again, this time without `-X':
<1>Unable to handle kernel NULL pointer dereference at virtual address 00000014
printing eip:
c89b2765
*pde = 00000000
Oops: 0002 [#2]
Modules linked in: ppp_deflate zlib_deflate bsd_comp ppp_async crc_ccitt ne2k_pci ppp_generic slhc af_packet nfs lockd sunrpc ne 8390 crc32 3c59x ipt_multiport ipt_LOG ipt_limit ipt_state ipt_mac iptable_filter ipt_MASQUERADE ipt_REDIRECT ip_nat_ftp iptable_nat ip_tables ip_conntrack_ftp ip_conntrack dm_mod rtc ide_cd cdrom ext3 jbd ide_generic ide_disk generic ide_core unix ext2 mbcache
CPU: 0
EIP: 0060:[<c89b2765>] Not tainted
EFLAGS: 00010246 (2.6.8-5.pentium1.1)
EIP is at nfs3_request_init+0x15/0x20 [nfs]
eax: 00000000 ebx: c5d765c0 ecx: c667b6a0 edx: c76faa44
esi: c10bbec0 edi: c5d765c0 ebp: c649e000 esp: c649fc28
ds: 007b es: 007b ss: 0068
Process bash (pid: 708, threadinfo=c649e000 task=c6a5ac50)
Stack: c5d765c0 c89aba3c c5d765c0 c667b6a0 c7dcc800 c76faa44 00000000 00000001
00000004 c10bbec0 000001fa c76faa44 00000000 c89ae1d8 c667b6a0 c76faa44
c10bbec0 00000000 000001fa c649fd0c c649fd0c c10bbed8 c10bbec0 c649fdb8
Call Trace:
[<c89aba3c>] nfs_create_request+0x9c/0xd0 [nfs]
[<c89ae1d8>] readpage_async_filler+0x58/0x100 [nfs]
[<c0130290>] read_cache_pages+0xb0/0x130
[<c8954c95>] rpc_release_task+0xe5/0x160 [sunrpc]
[<c8954715>] __rpc_execute+0x315/0x3b0 [sunrpc]
[<c0114070>] autoremove_wake_function+0x0/0x40
[<c89aa9d0>] nfs_alloc_inode+0x10/0x50 [nfs]
[<c0114070>] autoremove_wake_function+0x0/0x40
[<c89ae2cb>] nfs_readpages+0x4b/0xa0 [nfs]
[<c89ae180>] readpage_async_filler+0x0/0x100 [nfs]
[<c013041f>] read_pages+0x10f/0x120
[<c012d9f3>] buffered_rmqueue+0xe3/0x190
[<c012db4f>] __alloc_pages+0xaf/0x320
[<c012dce3>] __alloc_pages+0x243/0x320
[<c013066e>] do_page_cache_readahead+0xbe/0x130
[<c01307cf>] page_cache_readahead+0xef/0x1d0
[<c012a6a0>] do_generic_mapping_read+0x90/0x3d0
[<c012ac68>] __generic_file_aio_read+0x1a8/0x1e0
[<c012a9e0>] file_read_actor+0x0/0xe0
[<c012ace1>] generic_file_aio_read+0x41/0x60
[<c89a7586>] nfs_file_read+0x86/0xc0 [nfs]
[<c0142926>] do_sync_read+0x76/0xb0
[<c014ac0b>] sys_fstat64+0x2b/0x30
[<c01429ec>] vfs_read+0x8c/0xd0
[<c0142bed>] sys_read+0x3d/0x70
[<c01055c7>] syscall_call+0x7/0xb
Code: ff 40 14 89 43 18 5b c3 8d 76 00 8b 4c 24 04 8b 51 0c 3b 54
5) Only /home is mounted nfs. No user has logged in before those ssh
attempts. The attempts to ssh were carried away by a regular user,
not root.
-- System Information:
Debian Release: 3.1
APT prefers testing
APT policy: (500, 'testing'), (50, 'unstable')
Architecture: i386 (i586)
Kernel: Linux 2.6.8-2.pentium1.1
Locale: LANG=C, LC_CTYPE=C
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Received: (at 270779-close) by bugs.debian.org; 9 Sep 2004 11:40:55 +0000
>From willy@www.linux.org.uk Thu Sep 09 04:40:55 2004
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Date: Thu, 9 Sep 2004 12:40:53 +0100
From: Matthew Wilcox <willy@debian.org>
To: Shaul Karl <shaulk@013.net>, 270779-close@bugs.debian.org
Subject: Re: Bug#270779: kernel-source-2.6.8: Can't mount /home nfs?
Message-ID: <20040909114053.GS642@parcelfarce.linux.theplanet.co.uk>
References: <[🔎] E1C5KuS-0000Es-IH@rakefet>
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On Thu, Sep 09, 2004 at 12:08:04PM +0300, Shaul Karl wrote:
> Package: kernel-source-2.6.8
> Version: 2.6.8-5
> Severity: normal
>
> 1) I got these sources by patching pristine Linux source with
> kernel-patch-debian-2.6.8-5. I do hope I got the same source that is
> provided by kernel-source-2.6.8-5.
I doubt it. Looks to me like you're missing the two-line fix that went
into 2.6.8.1. What makes you think it's reasonable to use something
entirely different from the package we provide, then report a bug into
our bug tracking system?
--
"Next the statesmen will invent cheap lies, putting the blame upon
the nation that is attacked, and every man will be glad of those
conscience-soothing falsities, and will diligently study them, and refuse
to examine any refutations of them; and thus he will by and by convince
himself that the war is just, and will thank God for the better sleep
he enjoys after this process of grotesque self-deception." -- Mark Twain
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