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SubjectSudden instabilty of mysql boxen

Can somebody help out with pointers to why my boxes would suddenly
become unstable?

I have two boxes running mysql servers. The first one is running RH
7.3 with a 2.4.18-26 kernel that has the 3ware no bounce buffer patch
enabled (the src.rpm was downloaded, 3ware patch enabled and
rpmbuild) and the second one is running Rh 7.0 with a 2.4.2-ac28
kernel. The 3ware box handles over 600 queries per second.

The first box runs on a linux software mirrored array but has the
mysql data on a 3ware stripped mirrored array while the second one
runs on a linux software mirrored array (got two disks only).

They both suddenly started vomiting messages like:

Code: 8b 42 04 83 f8 ff 0f 84 6f 01 00 00 83 f8 fc 77 07 c7 42 04
<1>Unable to handle kernel NULL pointer dereference at virtual
address 00000004

Code: 8b 42 04 83 f8 ff 0f 84 6f 01 00 00 83 f8 fc 77 07 c7 42 04
Oops: 0000

and any commands you run on shells (if you them in the first place)
would exit with a segmentation fault. All attempts to ssh into the
box would fail after successful authentication with the connection
being closed (bash segfault?)

A reboot would cause them to run normally until they start acting up
again minutes later.

Here are the oops from the 3ware box run through ksymoops:

ksymoops 2.4.4 on i686 2.4.18-26.7.x.3ware.outblazesmp. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.18-26.7.x.3ware.outblazesmp/ (default)
-m /boot/System.map-2.4.18-26.7.x.3ware.outblazesmp (default)

Warning: You did not tell me where to find symbol information. I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc. ksymoops -h explains the options.

Error (expand_objects): cannot stat(/lib/ext3.o) for ext3
Error (expand_objects): cannot stat(/lib/jbd.o) for jbd
Error (expand_objects): cannot stat(/lib/raid1.o) for raid1
Error (expand_objects): cannot stat(/lib/3w-xxxx.o) for 3w-xxxx
Error (expand_objects): cannot stat(/lib/sd_mod.o) for sd_mod
Error (expand_objects): cannot stat(/lib/scsi_mod.o) for scsi_mod
Error (pclose_local): find_objects pclose failed 0x100
Warning (map_ksym_to_module): cannot match loaded module ext3 to a unique module object. Trace may not be reliable.
Code: 8b 42 04 83 f8 ff 0f 84 6f 01 00 00 83 f8 fc 77 07 c7 42 04
Using defaults from ksymoops -t elf32-i386 -a i386

Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: 8b 42 04 mov 0x4(%edx),%eax
Code; 00000003 Before first symbol
3: 83 f8 ff cmp $0xffffffff,%eax
Code; 00000006 Before first symbol
6: 0f 84 6f 01 00 00 je 17b <_EIP+0x17b> 0000017b Before first symbol
Code; 0000000c Before first symbol
c: 83 f8 fc cmp $0xfffffffc,%eax
Code; 0000000f Before first symbol
f: 77 07 ja 18 <_EIP+0x18> 00000018 Before first symbol
Code; 00000011 Before first symbol
11: c7 42 04 00 00 00 00 movl $0x0,0x4(%edx)

<1>Unable to handle kernel NULL pointer dereference at virtual address 00000004
f78a1842
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<f78a1842>] Not tainted
EFLAGS: 00010286
eax: bfffede4 ebx: e8922000 ecx: 00000000 edx: 00000000
esi: c0108ca3 edi: 0000000b ebp: e8923fb8 esp: e8923f80
ds: 0018 es: 0018 ss: 0018
Process id (pid: 2824, stackpage=e8923000)
Stack: e8922000 c0108ca3 0000000b f69af000 c014da2e f69af000 f69af000 0000000b
00000000 bfffede4 0000000b 00000000 00000a3a 00000020 bfffef58 f78a1a36
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Call Trace: [<c0108ca3>] system_call [kernel] 0x33 (0xe8923f84))
[<c014da2e>] getname [kernel] 0x5e (0xe8923f90))
Code: 8b 42 04 83 f8 ff 0f 84 6f 01 00 00 83 f8 fc 77 07 c7 42 04

>>EIP; f78a1842 <_end+37468ca6/383d4464> <=====
Trace; c0108ca3 <system_call+33/38>
Trace; c014da2e <.text.lock.pipe+42/b4>
Code; f78a1842 <_end+37468ca6/383d4464>
00000000 <_EIP>:
Code; f78a1842 <_end+37468ca6/383d4464> <=====
0: 8b 42 04 mov 0x4(%edx),%eax <=====
Code; f78a1845 <_end+37468ca9/383d4464>
3: 83 f8 ff cmp $0xffffffff,%eax
Code; f78a1848 <_end+37468cac/383d4464>
6: 0f 84 6f 01 00 00 je 17b <_EIP+0x17b> f78a19bd <_end+37468e21/383d4464>
Code; f78a184e <_end+37468cb2/383d4464>
c: 83 f8 fc cmp $0xfffffffc,%eax
Code; f78a1851 <_end+37468cb5/383d4464>
f: 77 07 ja 18 <_EIP+0x18> f78a185a <_end+37468cbe/383d4464>
Code; f78a1853 <_end+37468cb7/383d4464>
11: c7 42 04 00 00 00 00 movl $0x0,0x4(%edx)

<1>Unable to handle kernel NULL pointer dereference at virtual address 00000004
f78a1842
*pde = 00000000
Oops: 0000
CPU: 3
EIP: 0010:[<f78a1842>] Not tainted
EFLAGS: 00010286
eax: bfffe9e4 ebx: e8922000 ecx: 00000000 edx: 00000000
esi: c0108ca3 edi: 0000000b ebp: e8923fb8 esp: e8923f80
ds: 0018 es: 0018 ss: 0018
Process id (pid: 2826, stackpage=e8923000)
Stack: e8922000 c0108ca3 0000000b f69ae000 c014da2e f69ae000 f69ae000 0000000b
00000000 bfffe9e4 0000000b 00000000 00000a3a 00000020 bffff128 f78a1a36
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Call Trace: [<c0108ca3>] system_call [kernel] 0x33 (0xe8923f84))
[<c014da2e>] getname [kernel] 0x5e (0xe8923f90))
Code: 8b 42 04 83 f8 ff 0f 84 6f 01 00 00 83 f8 fc <1>Unable to handle kernel NULL pointer dereference77 07 c7 42 04
Warning (Oops_code): trailing garbage ignored on Code: line
Text: 'Code: 8b 42 04 83 f8 ff 0f 84 6f 01 00 00 83 f8 fc <1>Unable to handle kernel NULL pointer dereference77 07 c7 42 04'
Garbage: 'Unable to handle kernel NULL pointer dereference77 07 c7 42 04'
Error (Oops_code_values): invalid value 0x1 in Code line, must be 2, 4, 8 or 16 digits, value ignored

>>EIP; f78a1842 <_end+37468ca6/383d4464> <=====
Trace; c0108ca3 <system_call+33/38>
Trace; c014da2e <.text.lock.pipe+42/b4>
Code; f78a1833 <_end+37468c97/383d4464>
00000000 <_EIP>:
Code; f78a1833 <_end+37468c97/383d4464>
0: 8b 42 04 mov 0x4(%edx),%eax
Code; f78a1836 <_end+37468c9a/383d4464>
3: 83 f8 ff cmp $0xffffffff,%eax
Code; f78a1839 <_end+37468c9d/383d4464>
6: 0f 84 6f 01 00 00 je 17b <_EIP+0x17b> f78a19ae <_end+37468e12/383d4464>
Code; f78a183f <_end+37468ca3/383d4464>
c: 83 f8 fc cmp $0xfffffffc,%eax

f78a1842
*pde = 00000000
Oops: 0000
CPU: 2
EIP: 0010:[<f78a1842>] Not tainted
EFLAGS: 00010282
eax: bfffe8c4 ebx: e8776000 ecx: 00000000 edx: 00000000
esi: c0108ca3 edi: 0000000b ebp: e8777fb8 esp: e8777f80
ds: 0018 es: 0018 ss: 0018
Process ifconfig (pid: 2827, stackpage=e8777000)
Stack: e8776000 c0108ca3 0000000b f7971000 c014da2e f7971000 f7971000 0000000b
00000000 bfffe8c4 0000000b 00000000 00000a3a 00000020 bfffe528 f78a1a36
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Call Trace: [<c0108ca3>] system_call [kernel] 0x33 (0xe8777f84))
[<c014da2e>] getname [kernel] 0x5e (0xe8777f90))
Code: 8b 42 04 83 f8 ff 0f 84 6f 01 00 00 83 f8 fc 77 07 c7 42 04

>>EIP; f78a1842 <_end+37468ca6/383d4464> <=====
Trace; c0108ca3 <system_call+33/38>
Trace; c014da2e <.text.lock.pipe+42/b4>
Code; f78a1842 <_end+37468ca6/383d4464>
00000000 <_EIP>:
Code; f78a1842 <_end+37468ca6/383d4464> <=====
0: 8b 42 04 mov 0x4(%edx),%eax <=====
Code; f78a1845 <_end+37468ca9/383d4464>
3: 83 f8 ff cmp $0xffffffff,%eax
Code; f78a1848 <_end+37468cac/383d4464>
6: 0f 84 6f 01 00 00 je 17b <_EIP+0x17b> f78a19bd <_end+37468e21/383d4464>
Code; f78a184e <_end+37468cb2/383d4464>
c: 83 f8 fc cmp $0xfffffffc,%eax
Code; f78a1851 <_end+37468cb5/383d4464>
f: 77 07 ja 18 <_EIP+0x18> f78a185a <_end+37468cbe/383d4464>
Code; f78a1853 <_end+37468cb7/383d4464>
11: c7 42 04 00 00 00 00 movl $0x0,0x4(%edx)

<1>Unable to handle kernel NULL pointer dereference<1>Unable to handle kernel NULL pointer dereference<1>Unable to handle kernel NULL pointer dereference at virtual address 00000004
f78a1842
*pde = 00000000
f78a1842
f78a180000
f78a1842
*pde = 00000000
*pde = 00000000
CPU: 0
EIP: 0010:[<f78a1842>] Not tainted
EFLAGS: 00010282
eax: bfffe204 ebx: e7e12000 ecx: 00000000 edx: 00000000
esi: c0108ca3 edi: 0000000b ebp: e7e13fb8 esp: e7e13f80
ds: 0018 es: 0018 ss: 0018
Process grep (pid: 2838, stackpage=e7e13000)
Stack: e7e12000 c0108ca3 0000000b f69b1000 c014da2e f69b1000 f69b1000 0000000b
00000000 bfffe204 0000000b 00000000 00000a3a 00000020 bfffdf78 f78a1a36
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Call Trace: [<c0108ca3>] system_call [kernel] 0x33 (0xe7e13f84))
[<c014da2e>] getname [kernel] 0x5e (0xe7e13f90))
Code: 8b 42 04 83 f8 ff 0f 84 6f 01 00 00 83 f8 fc 77 07 c7 42 04

>>EIP; f78a1842 <_end+37468ca6/383d4464> <=====
Trace; c0108ca3 <system_call+33/38>
Trace; c014da2e <.text.lock.pipe+42/b4>
Code; f78a1842 <_end+37468ca6/383d4464>
00000000 <_EIP>:
Code; f78a1842 <_end+37468ca6/383d4464> <=====
0: 8b 42 04 mov 0x4(%edx),%eax <=====
Code; f78a1845 <_end+37468ca9/383d4464>
3: 83 f8 ff cmp $0xffffffff,%eax
Code; f78a1848 <_end+37468cac/383d4464>
6: 0f 84 6f 01 00 00 je 17b <_EIP+0x17b> f78a19bd <_end+37468e21/383d4464>
Code; f78a184e <_end+37468cb2/383d4464>
c: 83 f8 fc cmp $0xfffffffc,%eax
Code; f78a1851 <_end+37468cb5/383d4464>
f: 77 07 ja 18 <_EIP+0x18> f78a185a <_end+37468cbe/383d4464>
Code; f78a1853 <_end+37468cb7/383d4464>
11: c7 42 04 00 00 00 00 movl $0x0,0x4(%edx)

Oops: 0000
CPU: 2
EIP: 0010:[<f78a1842>] Not tainted
EFLAGS: 00010286
eax: bfffe174 ebx: e7e04000 ecx: 00000000 edx: 00000000
esi: c0108ca3 edi: 0000000b ebp: e7e05fb8 esp: e7e05f80
ds: 0018 es: 0018 ss: 0018
Process cut (pid: 2839, stackpage=e7e05000)
Stack: e7e04000 c0108ca3 0000000b f7971000 c014da2e f7971000 f7971000 0000000b
00000000 bfffe174 0000000b 00000000 00000a3a 00000020 bfffdf78 f78a1a36
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Call Trace: [<c0108ca3>] system_call [kernel] 0x33 (0xe7e05f84))
[<c014da2e>] getname [kernel] 0x5e (0xe7e05f90))
Code: 8b 42 04 83 f8 ff 0f 84 6f 01 00 00 83 f8 fc 77 07 c7 42 04

>>EIP; f78a1842 <_end+37468ca6/383d4464> <=====
Trace; c0108ca3 <system_call+33/38>
Trace; c014da2e <.text.lock.pipe+42/b4>
Code; f78a1842 <_end+37468ca6/383d4464>
00000000 <_EIP>:
Code; f78a1842 <_end+37468ca6/383d4464> <=====
0: 8b 42 04 mov 0x4(%edx),%eax <=====
Code; f78a1845 <_end+37468ca9/383d4464>
3: 83 f8 ff cmp $0xffffffff,%eax
Code; f78a1848 <_end+37468cac/383d4464>
6: 0f 84 6f 01 00 00 je 17b <_EIP+0x17b> f78a19bd <_end+37468e21/383d4464>
Code; f78a184e <_end+37468cb2/383d4464>
c: 83 f8 fc cmp $0xfffffffc,%eax
Code; f78a1851 <_end+37468cb5/383d4464>
f: 77 07 ja 18 <_EIP+0x18> f78a185a <_end+37468cbe/383d4464>
Code; f78a1853 <_end+37468cb7/383d4464>
11: c7 42 04 00 00 00 00 movl $0x0,0x4(%edx)

Oops: 0000
CPU: 3
EIP: 0010:[<f78a1842>] Not tainted
EFLAGS: 00010286
eax: bfffe274 ebx: e7e24000 ecx: 00000000 edx: 00000000
esi: c0108ca3 edi: 0000000b ebp: e7e25fb8 esp: e7e25f80
ds: 0018 es: 0018 ss: 0018
Process cat (pid: 2837, stackpage=e7e25000)
Stack: e7e24000 c0108ca3 0000000b f69ae000 c014da2e f69ae000 f69ae000 0000000b
00000000 bfffe274 0000000b 00000000 00000a3a 00000020 bfffdf78 f78a1a36
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Call Trace: [<c0108ca3>] system_call [kernel] 0x33 (0xe7e25f84))
Unable to handle kernel NULL pointer dereference[<c014da2e>] getname [kernel] 0x5e (0xe7e25f90))
Code: 8b 42 04 printing eip:
Warning (Oops_code): trailing garbage ignored on Code: line
Text: 'Code: 8b 42 04 printing eip:'
Garbage: ' printing eip:'

>>EIP; f78a1842 <_end+37468ca6/383d4464> <=====
Trace; c0108ca3 <system_call+33/38>
Code; f78a1842 <_end+37468ca6/383d4464>
00000000 <_EIP>:
Code; f78a1842 <_end+37468ca6/383d4464>
0: 8b 42 04 mov 0x4(%edx),%eax

Oops: 0000
CPU: 1
EIP: 0010:[<f78a1842>] Not tainted
EFLAGS: 00010282
eax: bfffe694 ebx: e7b4e000 ecx: f7358000 edx: 00000000
esi: c0108ca3 edi: 0000000b ebp: e7b4ffb8 esp: e7b4ff80
ds: 0018 es: 0018 ss: 0018
Process w (pid: 2840, stackpage=e7b4f000)
Stack: e7b4e000 c0108ca3 0000000b f69af000 c014da2e f69af000 f69af000 0000000b
00000000 bfffe694 0000000b 00000000 00000a3a 00000020 bfffe888 f78a1a36
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Call Trace: [<c0108ca3>] system_call [kernel] 0x33 (0xe7b4ff84))
[<c014da2e>] getname [kernel] 0x5e (0xe7b4ff90))
Code: 8b 42 04 83 f8 ff 0f 84 6f 01 00 00 83 f8 fc 77 07 c7 42 04

>>EIP; f78a1842 <_end+37468ca6/383d4464> <=====
Trace; c0108ca3 <system_call+33/38>
Trace; c014da2e <.text.lock.pipe+42/b4>
Code; f78a1842 <_end+37468ca6/383d4464>
00000000 <_EIP>:
Code; f78a1842 <_end+37468ca6/383d4464> <=====
0: 8b 42 04 mov 0x4(%edx),%eax <=====
Code; f78a1845 <_end+37468ca9/383d4464>
3: 83 f8 ff cmp $0xffffffff,%eax
Code; f78a1848 <_end+37468cac/383d4464>
6: 0f 84 6f 01 00 00 je 17b <_EIP+0x17b> f78a19bd <_end+37468e21/383d4464>
Code; f78a184e <_end+37468cb2/383d4464>
c: 83 f8 fc cmp $0xfffffffc,%eax
Code; f78a1851 <_end+37468cb5/383d4464>
f: 77 07 ja 18 <_EIP+0x18> f78a185a <_end+37468cbe/383d4464>
Code; f78a1853 <_end+37468cb7/383d4464>
11: c7 42 04 00 00 00 00 movl $0x0,0x4(%edx)

<1>Unable to handle kernel NULL pointer dereference at virtual address 00000004
f78a1842
*pde = 00000000
Unable to handle kernel NULL pointer dereferenceOops: 0000
CPU: 1
EIP: 0010:[<f78a1842>] Not tainted
EFLAGS: 00010282
f78a1842
*pde = 00000000
eax: bffff164 ebx: e745c000 ecx: 00000000 edx: 00000000
esi: c0108ca3 edi: 0000000b ebp: e745dfb8 esp: e745df80
ds: 0018 es: 0018 ss: 0018
Process id (pid: 2846, stackpage=e745d000)
Stack: e745c000 c0108ca3 0000000b f69af000 c014da2e f69af000 f69af000 0000000b
00000000 bffff164 0000000b 00000000 00000a3a 00000020 bfffe658 f78a1a36
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[<c014da2e>] getname [kernel] 0x5e (0xe745df90))
Code: 8b 42 04 83 f8 ff 0f 84 6f 01 00 00 83 f8 fc 77 07 c7 42 04

>>EIP; f78a1842 <_end+37468ca6/383d4464> <=====
Code; f78a1842 <_end+37468ca6/383d4464>
00000000 <_EIP>:
Code; f78a1842 <_end+37468ca6/383d4464> <=====
0: 8b 42 04 mov 0x4(%edx),%eax <=====
Code; f78a1845 <_end+37468ca9/383d4464>
3: 83 f8 ff cmp $0xffffffff,%eax
Code; f78a1848 <_end+37468cac/383d4464>
6: 0f 84 6f 01 00 00 je 17b <_EIP+0x17b> f78a19bd <_end+37468e21/383d4464>
Code; f78a184e <_end+37468cb2/383d4464>
c: 83 f8 fc cmp $0xfffffffc,%eax
Code; f78a1851 <_end+37468cb5/383d4464>
f: 77 07 ja 18 <_EIP+0x18> f78a185a <_end+37468cbe/383d4464>
Code; f78a1853 <_end+37468cb7/383d4464>
11: c7 42 04 00 00 00 00 movl $0x0,0x4(%edx)

Oops: 0000
Unable to handle kernel NULL pointer dereferenceeepro100 usb-uhci usbcore ext3 jbd raid1 3w-xxxx sd_mod scsi_mod
CPU: 3
EIP: 0010:[<f78a1842>] Not tainted
EFLAGS: 00010282
f78a1842
*pde = 00000000
eax: bfffedf4 ebx: e742e000 ecx: f7358000 edx: 00000000
esi: c0108ca3 edi: 0000000b ebp: e742ffb8 esp: e742ff80
ds: 0018 es: 0018 ss: 0018
Process sh (pid: 2848, stackpage=e742f000)
Stack: e742e000 c0108ca3 0000000b f69ae000 c014da2e f69ae000 f69ae000 0000000b
00000000 bfffedf4 0000000b 00000000 00000a3a 00000020 bfffdaa8 f78a1a36
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Call Trace: [<c0108ca3>] system_call [kernel] 0x33 (0xe742ff84))
[<c014da2e>] getname [kernel] 0x5e (0xe742ff90))
Code: 8b 42 04 83 f8 ff 0f 84 6f 01 00 00 83 f8 fc 77 07 c7 42 04

>>EIP; f78a1842 <_end+37468ca6/383d4464> <=====
Trace; c0108ca3 <system_call+33/38>
Trace; c014da2e <.text.lock.pipe+42/b4>
Code; f78a1842 <_end+37468ca6/383d4464>
00000000 <_EIP>:
Code; f78a1842 <_end+37468ca6/383d4464> <=====
0: 8b 42 04 mov 0x4(%edx),%eax <=====
Code; f78a1845 <_end+37468ca9/383d4464>
3: 83 f8 ff cmp $0xffffffff,%eax
Code; f78a1848 <_end+37468cac/383d4464>
6: 0f 84 6f 01 00 00 je 17b <_EIP+0x17b> f78a19bd <_end+37468e21/383d4464>
Code; f78a184e <_end+37468cb2/383d4464>
c: 83 f8 fc cmp $0xfffffffc,%eax
Code; f78a1851 <_end+37468cb5/383d4464>
f: 77 07 ja 18 <_EIP+0x18> f78a185a <_end+37468cbe/383d4464>
Code; f78a1853 <_end+37468cb7/383d4464>
11: c7 42 04 00 00 00 00 movl $0x0,0x4(%edx)

Oops: 0000
CPU: 1
EIP: 0010:[<f78a1842>] Not tainted
EFLAGS: 00010282
eax: bffff664 ebx: e7348000 ecx: 00000000 edx: 00000000
esi: c0108ca3 edi: 0000000b ebp: e7349fb8 esp: e7349f80
ds: 0018 es: 0018 ss: 0018
Process id (pid: 2850, stackpage=e7349000)
Stack: e7348000 c0108ca3 0000000b f69af000 c014da2e f69af000 f69af000 0000000b
00000000 bffff664 0000000b 00000000 00000a3a 00000020 bfffe658 f78a1a36
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Call Trace: [<c0108ca3>] system_call [kernel] 0x33 (0xe7349f84))
[<c014da2e>] getname [kernel] 0x5e (0xe7349f90))
Code: 8b 42 04 83 f8 ff 0f 84 6f 01 00 00 83 f8 fc 77 07 c7 42 04

>>EIP; f78a1842 <_end+37468ca6/383d4464> <=====
Trace; c0108ca3 <system_call+33/38>
Trace; c014da2e <.text.lock.pipe+42/b4>
Code; f78a1842 <_end+37468ca6/383d4464>
00000000 <_EIP>:
Code; f78a1842 <_end+37468ca6/383d4464> <=====
0: 8b 42 04 mov 0x4(%edx),%eax <=====
Code; f78a1845 <_end+37468ca9/383d4464>
3: 83 f8 ff cmp $0xffffffff,%eax
Code; f78a1848 <_end+37468cac/383d4464>
6: 0f 84 6f 01 00 00 je 17b <_EIP+0x17b> f78a19bd <_end+37468e21/383d4464>
Code; f78a184e <_end+37468cb2/383d4464>
c: 83 f8 fc cmp $0xfffffffc,%eax
Code; f78a1851 <_end+37468cb5/383d4464>
f: 77 07 ja 18 <_EIP+0x18> f78a185a <_end+37468cbe/383d4464>
Code; f78a1853 <_end+37468cb7/383d4464>
11: c7 42 04 00 00 00 00 movl $0x0,0x4(%edx)

<1>Unable to handle kernel NULL pointer dereference at virtual address 00000004
f78a1842
*pde = 00000000
Oops: 0000
CPU: 3
EIP: 0010:[<f78a1842>] Not tainted
EFLAGS: 00010282
eax: bffff364 ebx: e7348000 ecx: 00000000 edx: 00000000
esi: c0108ca3 edi: 0000000b ebp: e7349fb8 esp: e7349f80
ds: 0018 es: 0018 ss: 0018
Process id (pid: 2852, stackpage=e7349000)
Stack: e7348000 c0108ca3 0000000b f69ae000 c014da2e f69ae000 f69ae000 0000000b
00000000 bffff364 0000000b 00000000 00000a3a 00000020 bfffe828 f78a1a36
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Call Trace: [<c0108ca3>] system_call [kernel] 0x33 (0xe7349f84))
[<c014da2e>] getname [kernel] 0x5e (0xe7349f90))
Warning (Oops_read): Code line not seen, dumping what data is available

>>EIP; f78a1842 <_end+37468ca6/383d4464> <=====
Trace; c0108ca3 <system_call+33/38>
Trace; c014da2e <.text.lock.pipe+42/b4>


5 warnings and 8 errors issued. Results may not be reliable.

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