[linux-cifs-client] (no subject)
Gorazd Golob
gorazdg at noviforum.si
Mon Dec 13 21:09:43 GMT 2004
Hi!
I just had another crash on newest cifs code (from bk 3 hours ago)..
java process was reading from cifs mount point - xp on other side. Here is
a dmesg (I'm sorry I didn't have set debug in cifsFYI .. I'll try to make
also one.. didn't need much time to crash it).
Under dmesg snip in kernel oops with ksymoops
--- dmesg ----
CIFS VFS: mounting share using direct i/o
CIFS VFS: Rcvd Request not response
CIFS VFS: bad smb detected. The Mid=0
CIFS VFS: Invalid size or format for SMB found with length 13 and
pdu_length 4164
Received Data is: : dump of 40 bytes of data at 0xeb370d80
40100000 424d53ff 0000002e 00000000 . . . @ ÿ S M B . . . . . . . .
00000000 00000000 00000000 00000000 . . . . . . . . . . . . . . . .
00000000 00000000 . . . . . . . .
CIFS VFS: No response buffer
CIFS VFS: No response buffer
CIFS VFS: Send error in read = -11
CIFS VFS: Send error in read = -11
CIFS VFS: No response buffer
CIFS VFS: Send error in read = -11
CIFS VFS: No response buffer
CIFS VFS: Send error in read = -11
CIFS VFS: No response buffer
CIFS VFS: Send error in read = -11
CIFS VFS: No response buffer
CIFS VFS: Send error in read = -11
CIFS VFS: No response buffer
CIFS VFS: Send error in read = -11
CIFS VFS: No response buffer
CIFS VFS: Send error in read = -11
CIFS VFS: No response buffer
CIFS VFS: Send error in read = -11
CIFS VFS: No response buffer
CIFS VFS: Send error in read = -11
CIFS VFS: No response buffer
CIFS VFS: Send error in read = -11
CIFS VFS: No response buffer
CIFS VFS: Send error in read = -11
CIFS VFS: No response buffer
CIFS VFS: Send error in read = -11
CIFS VFS: No response buffer
CIFS VFS: Send error in read = -11
CIFS VFS: No response buffer
CIFS VFS: Send error in read = -11
Unable to handle kernel NULL pointer dereference at virtual address
00000031
printing eip:
c01bb794
*pde = 00000000
Oops: 0000 [#1]
SMP
Modules linked in:
CPU: 0
EIP: 0060:[<c01bb794>] Not tainted VLI
EFLAGS: 00010282 (2.6.10-rc3)
CIFS VFS: Send error in read = -9
eax: 00000000 ebx: 00001004 ecx: 00000053 edx: c0351420
esi: f5c9ae00 edi: 0034f358 ebp: 0000a028 esp: f56bff48
ds: 007b es: 007b ss: 0068
Process java (pid: 5368, threadinfo=f56be000 task=ee6ffa60)
Stack: 00000000 f7f32a60 081a37b0 f71b0be0 fffffff5 00000000 00000000
00000000
f4ba1920 f56bffac 00019000 c0140990 f4ba1920 08199788 00019000
f56bffac
f4ba1920 fffffff7 00019000 f56be000 c0140b89 f4ba1920 08199788
00019000
Call Trace:
[<c0140990>]
[<c0140b89>]
[<c0102ad7>]
Code: 14 50 8b 4c 24 40 ff 71 04 ff 31 53 8b 54 24 14 0f b7 42 18 50 56 57
e8 88 2a ff ff 89 44 24 2c 8b 44 24 34 83 c4 20 ff 74 24 10 <0f> b7 50 31
8d 44 02 04 50 ff 74 24 0c e8 34
<3> CIFS VFS: Send error in read = -9
60 01 00 83 c4 0c
<3> CIFS VFS: Send error in read = -9
CIFS VFS: Send error in read = -9
CIFS VFS: Send error in read = -9
CIFS VFS: Send error in read = -9
CIFS VFS: Send error in read = -9
CIFS VFS: Send error in read = -9
CIFS VFS: Send error in read = -9
CIFS VFS: Send error in read = -9
CIFS VFS: Send error in read = -9
CIFS VFS: Send error in read = -9
CIFS VFS: Send error in read = -9
CIFS VFS: Send error in read = -9
CIFS VFS: Send error in Close = -9
CIFS VFS: Send error in Close = -9
CIFS VFS: Send error in Close = -9
CIFS VFS: Send error in Close = -9
CIFS VFS: Send error in Close = -9
CIFS VFS: Send error in Close = -9
CIFS VFS: Send error in Close = -9
CIFS VFS: Send error in Close = -9
CIFS VFS: Send error in Close = -9
CIFS VFS: Send error in Close = -9
CIFS VFS: Send error in Close = -9
CIFS VFS: Send error in Close = -9
CIFS VFS: Send error in Close = -9
CIFS VFS: Send error in Close = -9
--- dmesg with ksymoops --
>>EIP; c01bb794 <cifs_user_read+14e/241> <=====
>>edx; c0351420 <table+0/20>
>>esi; f5c9ae00 <pg0+35894e00/3fbf8400>
>>esp; f56bff48 <pg0+352b9f48/3fbf8400>
Trace; c0140990 <vfs_read+96/c0>
Trace; c0140b89 <sys_read+3b/63>
Trace; c0102ad7 <syscall_call+7/b>
This architecture has variable length instructions, decoding before eip
is unreliable, take these instructions with a pinch of salt.
Code; c01bb75a <cifs_user_read+114/241>
00000000 <_EIP>:
Code; c01bb75a <cifs_user_read+114/241>
0: 14 50 adc $0x50,%al
Code; c01bb75c <cifs_user_read+116/241>
2: 8b 4c 24 40 mov 0x40(%esp),%ecx
Code; c01bb760 <cifs_user_read+11a/241>
6: ff 71 04 pushl 0x4(%ecx)
Code; c01bb763 <cifs_user_read+11d/241>
9: ff 31 pushl (%ecx)
Code; c01bb765 <cifs_user_read+11f/241>
b: 53 push %ebx
Code; c01bb766 <cifs_user_read+120/241>
c: 8b 54 24 14 mov 0x14(%esp),%edx
Code; c01bb76a <cifs_user_read+124/241>
10: 0f b7 42 18 movzwl 0x18(%edx),%eax
Code; c01bb76e <cifs_user_read+128/241>
14: 50 push %eax
Code; c01bb76f <cifs_user_read+129/241>
15: 56 push %esi
Code; c01bb770 <cifs_user_read+12a/241>
16: 57 push %edi
Code; c01bb771 <cifs_user_read+12b/241>
17: e8 88 2a ff ff call ffff2aa4 <_EIP+0xffff2aa4>
Code; c01bb776 <cifs_user_read+130/241>
1c: 89 44 24 2c mov %eax,0x2c(%esp)
Code; c01bb77a <cifs_user_read+134/241>
20: 8b 44 24 34 mov 0x34(%esp),%eax
Code; c01bb77e <cifs_user_read+138/241>
24: 83 c4 20 add $0x20,%esp
Code; c01bb781 <cifs_user_read+13b/241>
27: ff 74 24 10 pushl 0x10(%esp)
Code; c01bb785 <cifs_user_read+13f/241>
2b: 0f b7 50 31 movzwl 0x31(%eax),%edx
Code; c01bb789 <cifs_user_read+143/241>
2f: 8d 44 02 04 lea 0x4(%edx,%eax,1),%eax
Code; c01bb78d <cifs_user_read+147/241>
33: 50 push %eax
Code; c01bb78e <cifs_user_read+148/241>
34: ff 74 24 0c pushl 0xc(%esp)
Code; c01bb792 <cifs_user_read+14c/241>
38: e8 .byte 0xe8
Code; c01bb793 <cifs_user_read+14d/241>
39: 34 .byte 0x34
This decode from eip onwards should be reliable
Code; c01bb794 <cifs_user_read+14e/241>
00000000 <_EIP>:
Code; c01bb794 <cifs_user_read+14e/241> <=====
0: 00 00 add %al,(%eax) <=====
Code; c01bb796 <cifs_user_read+150/241>
2: 00 00 add %al,(%eax)
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