Bug 2274 - NULL pointer passed to kernel
NULL pointer passed to kernel
Status: RESOLVED INVALID
Product: Samba 3.0
Classification: Unclassified
Component: smbmount (unmaintained)
3.0.9
x86 Linux
: P3 major
: none
Assigned To: Samba Bugzilla Account
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http://www.fedoraforum.org/forum/arch...
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Reported: 2005-01-21 21:10 UTC by Chris Maden
Modified: 2005-02-07 10:07 UTC (History)
0 users

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Description Chris Maden 2005-01-21 21:10:36 UTC
If I mount a W2K drive on my rh9.0 box (running the 2.4.20-8 kernel), and
attempt to copy a large number of files from the W2K to the linux, the keyboard
on the server hangs. An excerpt from messages is below (dhcp and samba drop
about 600M/ week into this file). There are a number of similar such records in
the file.

I did _not_ experience this problem until I upgraded from 3.0.2a to 3.0.9 last
weekend (15 Jan 2005)

Other users on http://www.fedoraforum.org/forum/archive/index.php/t-2687.html
 have reported a similar problem. They identified it as originating with a race
condition with something called nautilus, but I do not knowingly run nautilus
(it does not appear on a ps, chkconfig, or the like).

------ typical extract from /var/log/messages ----------

Jan 19 09:31:10 hpfileserver kernel: smb_lookup: find data/02-2204 failed, error=-5
Jan 19 09:31:10 hpfileserver last message repeated 2 times
Jan 19 09:31:10 hpfileserver kernel: smb_lookup: find data/02-6335 failed, error=-5
Jan 19 09:31:10 hpfileserver last message repeated 29 times
Jan 19 09:31:10 hpfileserver kernel: smb_lookup: find data/03-0326 failed, error=-5
Jan 19 09:31:10 hpfileserver last message repeated 2 times
Jan 19 09:31:10 hpfileserver kernel: smb_lookup: find data/02-6335 failed, error=-5
Jan 19 09:31:10 hpfileserver last message repeated 32 times
Jan 19 09:31:10 hpfileserver kernel: smb_lookup: find data/0400268 failed, error=-5
Jan 19 09:31:10 hpfileserver last message repeated 2 times
Jan 19 09:31:10 hpfileserver kernel: smb_lookup: find data/0402452 failed, error=-5
Jan 19 09:31:10 hpfileserver last message repeated 2 times
Jan 19 09:31:10 hpfileserver kernel: smb_lookup: find data/02-6335 failed, error=-5
Jan 19 09:31:10 hpfileserver last message repeated 50 times
Jan 19 09:31:10 hpfileserver kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000004
Jan 19 09:31:10 hpfileserver kernel:  printing eip:
Jan 19 09:31:10 hpfileserver kernel: f6375839
Jan 19 09:31:10 hpfileserver kernel: *pde = 00000000
Jan 19 09:31:10 hpfileserver kernel: Oops: 0000
Jan 19 09:31:10 hpfileserver kernel: smbfs parport_pc lp parport nfsd lockd
sunrpc iptable_filter ip_tables autofs tg3 microcode st raid5 xor keybdev
mousedev hid input usb-ohci usbcore ext3 jbd
Jan 19 09:31:10 hpfileserver kernel: CPU:    0
Jan 19 09:31:10 hpfileserver kernel: EIP:    0060:[<f6375839>]    Not tainted
Jan 19 09:31:10 hpfileserver kernel: EFLAGS: 00010282
Jan 19 09:31:10 hpfileserver kernel:
Jan 19 09:31:10 hpfileserver kernel: EIP is at ___strtok_R29805c13 [] 0x35f9a73d
(2.4.20-8)
Jan 19 09:31:10 hpfileserver kernel: eax: bfffe654   ebx: efde4000   ecx:
00000000   edx: 00000000
Jan 19 09:31:10 hpfileserver kernel: esi: c0109537   edi: 0000000b   ebp:
efde5fb8   esp: efde5f70
Jan 19 09:31:10 hpfileserver kernel: ds: 0068   es: 0068   ss: 0068
Jan 19 09:31:10 hpfileserver kernel: Process sendmail (pid: 4811,
stackpage=efde5000)
Jan 19 09:31:10 hpfileserver kernel: Stack: ffffffff 00000006 00000010 f6426000
00000000 bfffffe9 f6426000 00000292
Jan 19 09:31:10 hpfileserver kernel:        f6426000 00000292 c36b1100 bfffe654
00000000 c0107c25 c36b1100 efde4000
Jan 19 09:31:10 hpfileserver kernel:        c0109537 0000000b bfffde78 f6375a45
00000000 00000000 00000000 00000000
Jan 19 09:31:10 hpfileserver kernel: Call Trace:   [<c0107c25>] sys_execve
[kernel] 0x75 (0xefde5fa4))
Jan 19 09:31:10 hpfileserver kernel: [<c0109537>] system_call [kernel] 0x33
(0xefde5fb0))
Jan 19 09:31:10 hpfileserver kernel:
Jan 19 09:31:10 hpfileserver kernel:
Jan 19 09:31:10 hpfileserver kernel: Code: 8b 42 04 83 f8 ff c7 45 f0 20 00 00
00 c7 45 ec 3a 0a 00 00
Jan 19 09:31:10 hpfileserver kernel:  <1>Unable to handle kernel NULL pointer
dereference at virtual address 00000004
Jan 19 09:31:10 hpfileserver kernel:  printing eip:
Jan 19 09:31:10 hpfileserver kernel: f6375839
Jan 19 09:31:10 hpfileserver kernel: *pde = 00000000
Comment 1 Gerald (Jerry) Carter 2005-02-07 10:07:09 UTC
if the kernel crashes, this is a kernel bug.