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SubjectRe: 2.4.9-10pre4 kernel: __alloc_pages errors
all-

after upgrading to the 2.4.10-pre6 kernel i still have no luck in avoiding
alloc_pages() errors.

this time i have included an kernel oops dump by calling BUG() from
mm/page_alloc.c immediately after the call to printk() that prints
__alloc_pages errors. i have also included the `ksymoops` interpretation
of that oops. coincidentally, i was able to grab a partial `cat` of
/proc/slabinfo milliseonds before the oops so i've attached that as well.

again, the alloc_page() errors that i'm constantly seeing are 0-order with
gfp=0x70/1

oops1.txt --------------------------------------------------------------

ofs1# more oops1.txt
Sep 12 11:30:15 ofs1 kernel: __alloc_pages: 0-order allocation failed
(gfp=0x70/1).
Sep 12 11:30:15 ofs1 kernel: invalid operand: 0000
Sep 12 11:30:15 ofs1 kernel: CPU: 0
Sep 12 11:30:15 ofs1 kernel: EIP: 0010:[__alloc_pages+591/604]
Sep 12 11:30:15 ofs1 kernel: EFLAGS: 00010286
Sep 12 11:30:15 ofs1 kernel: eax: 0000003a ebx: 00000000 ecx: f7df6000
edx: 00000000
Sep 12 11:30:15 ofs1 kernel: esi: c028b208 edi: 00000000 ebp: f7df6000
esp: f7df7e74
Sep 12 11:30:15 ofs1 kernel: ds: 0018 es: 0018 ss: 0018
Sep 12 11:30:15 ofs1 kernel: Process kswapd (pid: 4, stackpage=f7df7000)
Sep 12 11:30:15 ofs1 kernel: Stack: 00000070 00000001 00000008 c02f7a00
00000001 c028b1fc 00000070 c012700e
Sep 12 11:30:15 ofs1 kernel: c0415a20 c012a499 c0415a20 c012a5ac
f4ac0240 00000001 00000008 c02f7a00
Sep 12 11:30:15 ofs1 kernel: c01a97c7 00000001 f4ac0240 00003009
f4ac0240 1f9f8d60 19a175af c02f7a28
Sep 12 11:30:15 ofs1 kernel: Call Trace: [_alloc_pages+22/24]
[alloc_bounce_page+13/120] [create_bounce+40/380]
[__make_request+135/1596] [ip_rcv+806/860]
Sep 12 11:30:15 ofs1 kernel: [generic_make_request+288/304]
[submit_bh+69/96] [ll_rw_block+299/396] [sync_page_buffers+71/84]
[try_to_free_buffers+281/316] [page_launder+603/1376]
Sep 12 11:30:15 ofs1 kernel: [do_try_to_free_pages+64/184]
[kswapd+105/172] [kernel_thread+40/56]
Sep 12 11:30:15 ofs1 kernel:
Sep 12 11:30:15 ofs1 kernel: Code: 0f 0b 31 c0 5b 5e 5f 5d 83 c4 0c c3 90
83 fa 09 77 09 e8 82

--------------------------------------------------------------------------



ksymoops output: ---------------------------------------------------------

ofs1# ./ksymoops -m /kernel/System.map < oops1.txt
ksymoops 2.4.2 on i686 2.4.10-pre6. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.10-pre6/ (default)
-m /kernel/System.map (specified)

Warning (compare_maps): mismatch on symbol partition_name , ksyms_base
says c01f6a80, System.map says c0145bd0. Ignoring ksyms_base entry
Sep 12 11:30:15 ofs1 kernel: invalid operand: 0000
Sep 12 11:30:15 ofs1 kernel: CPU: 0
Sep 12 11:30:15 ofs1 kernel: EIP: 0010:[__alloc_pages+591/604]
Sep 12 11:30:15 ofs1 kernel: EFLAGS: 00010286
Sep 12 11:30:15 ofs1 kernel: eax: 0000003a ebx: 00000000 ecx: f7df6000
edx: 00000000
Sep 12 11:30:15 ofs1 kernel: esi: c028b208 edi: 00000000 ebp: f7df6000
esp: f7df7e74
Sep 12 11:30:15 ofs1 kernel: ds: 0018 es: 0018 ss: 0018
Sep 12 11:30:15 ofs1 kernel: Process kswapd (pid: 4, stackpage=f7df7000)
Sep 12 11:30:15 ofs1 kernel: Stack: 00000070 00000001 00000008 c02f7a00
00000001 c028b1fc 00000070 c012700e
Sep 12 11:30:15 ofs1 kernel: c0415a20 c012a499 c0415a20 c012a5ac
f4ac0240 00000001 00000008 c02f7a00
Sep 12 11:30:15 ofs1 kernel: c01a97c7 00000001 f4ac0240 00003009
f4ac0240 1f9f8d60 19a175af c02f7a28
Sep 12 11:30:15 ofs1 kernel: Call Trace: [_alloc_pages+22/24]
[alloc_bounce_page+13/120] [create_bounce+40/380]
[__make_request+135/1596] [ip_rcv+806/860]
Sep 12 11:30:15 ofs1 kernel: Code: 0f 0b 31 c0 5b 5e 5f 5d 83 c4 0c c3 90
83 fa 09 77 09 e8 82
Using defaults from ksymoops -t elf32-i386 -a i386

Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: 0f 0b ud2a
Code; 00000002 Before first symbol
2: 31 c0 xorl %eax,%eax
Code; 00000004 Before first symbol
4: 5b popl %ebx
Code; 00000004 Before first symbol
5: 5e popl %esi
Code; 00000006 Before first symbol
6: 5f popl %edi
Code; 00000006 Before first symbol
7: 5d popl %ebp
Code; 00000008 Before first symbol
8: 83 c4 0c addl $0xc,%esp
Code; 0000000a Before first symbol
b: c3 ret
Code; 0000000c Before first symbol
c: 90 nop
Code; 0000000c Before first symbol
d: 83 fa 09 cmpl $0x9,%edx
Code; 00000010 Before first symbol
10: 77 09 ja 1b <_EIP+0x1b> 0000001a Before
first symbol
Code; 00000012 Before first symbol
12: e8 82 00 00 00 call 99 <_EIP+0x99> 00000098 Before
first symbol


1 warning issued. Results may not be reliable.
ofs1#
--------------------------------------------------------------------------



/proc/slabinfo ---------------*partial*-----------------------------------

kmem_cache 58 68 112 2 2 1
ip_conntrack 25 33 352 3 3 1
tcp_tw_bucket 0 0 96 0 0 1
tcp_bind_bucket 9 113 32 1 1 1
tcp_open_request 0 0 64 0 0 1
inet_peer_cache 5 59 64 1 1 1
ip_fib_hash 10 113 32 1 1 1
ip_dst_cache 38 48 160 2 2 1
arp_cache 11 30 128 1 1 1
blkdev_requests 512 520 96 13 13 1
nfs_read_data 0 0 384 0 0 1
nfs_write_data 0 0 384 0 0 1
nfs_page 0 0 96 0 0 1
dnotify cache 0 0 20 0 0 1
file lock cache 2 42 92 1 1 1
fasync cache 0 0 16 0 0 1
uid_cache 6 113 32 1 1 1
skbuff_head_cache 229 264 160 11 11 1
sock 31 36 832 4 4 2
sigqueue 0 0 132 0 0 1
cdev_cache 16 59 64 1 1 1
bdev_cache 8 59 64 1 1 1

------------------------------------------------------------------------

i can probide any additional information neccessary to help you debug this
problem.

for ease of use, i have attached the 3 files pasted above as oops1.txt,
ksymoops1.txt and slabinfo1.txt respectively.

thanx,
-kelley

ps: my thoughts to those of you with any family involved in yesterday's
most heinous event.

ofs1# ./ksymoops -m /kernel/System.map < oops1.txt
ksymoops 2.4.2 on i686 2.4.10-pre6. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.10-pre6/ (default)
-m /kernel/System.map (specified)

Warning (compare_maps): mismatch on symbol partition_name , ksyms_base says c01f6a80, System.map says c0145bd0. Ignoring ksyms_base entry
Sep 12 11:30:15 ofs1 kernel: invalid operand: 0000
Sep 12 11:30:15 ofs1 kernel: CPU: 0
Sep 12 11:30:15 ofs1 kernel: EIP: 0010:[__alloc_pages+591/604]
Sep 12 11:30:15 ofs1 kernel: EFLAGS: 00010286
Sep 12 11:30:15 ofs1 kernel: eax: 0000003a ebx: 00000000 ecx: f7df6000 edx: 00000000
Sep 12 11:30:15 ofs1 kernel: esi: c028b208 edi: 00000000 ebp: f7df6000 esp: f7df7e74
Sep 12 11:30:15 ofs1 kernel: ds: 0018 es: 0018 ss: 0018
Sep 12 11:30:15 ofs1 kernel: Process kswapd (pid: 4, stackpage=f7df7000)
Sep 12 11:30:15 ofs1 kernel: Stack: 00000070 00000001 00000008 c02f7a00 00000001 c028b1fc 00000070 c012700e
Sep 12 11:30:15 ofs1 kernel: c0415a20 c012a499 c0415a20 c012a5ac f4ac0240 00000001 00000008 c02f7a00
Sep 12 11:30:15 ofs1 kernel: c01a97c7 00000001 f4ac0240 00003009 f4ac0240 1f9f8d60 19a175af c02f7a28
Sep 12 11:30:15 ofs1 kernel: Call Trace: [_alloc_pages+22/24] [alloc_bounce_page+13/120] [create_bounce+40/380] [__make_request+135/1596] [ip_rcv+806/860]
Sep 12 11:30:15 ofs1 kernel: Code: 0f 0b 31 c0 5b 5e 5f 5d 83 c4 0c c3 90 83 fa 09 77 09 e8 82
Using defaults from ksymoops -t elf32-i386 -a i386

Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: 0f 0b ud2a
Code; 00000002 Before first symbol
2: 31 c0 xorl %eax,%eax
Code; 00000004 Before first symbol
4: 5b popl %ebx
Code; 00000004 Before first symbol
5: 5e popl %esi
Code; 00000006 Before first symbol
6: 5f popl %edi
Code; 00000006 Before first symbol
7: 5d popl %ebp
Code; 00000008 Before first symbol
8: 83 c4 0c addl $0xc,%esp
Code; 0000000a Before first symbol
b: c3 ret
Code; 0000000c Before first symbol
c: 90 nop
Code; 0000000c Before first symbol
d: 83 fa 09 cmpl $0x9,%edx
Code; 00000010 Before first symbol
10: 77 09 ja 1b <_EIP+0x1b> 0000001a Before first symbol
Code; 00000012 Before first symbol
12: e8 82 00 00 00 call 99 <_EIP+0x99> 00000098 Before first symbol


1 warning issued. Results may not be reliable.
ofs1#
kmem_cache 58 68 112 2 2 1
ip_conntrack 25 33 352 3 3 1
tcp_tw_bucket 0 0 96 0 0 1
tcp_bind_bucket 9 113 32 1 1 1
tcp_open_request 0 0 64 0 0 1
inet_peer_cache 5 59 64 1 1 1
ip_fib_hash 10 113 32 1 1 1
ip_dst_cache 38 48 160 2 2 1
arp_cache 11 30 128 1 1 1
blkdev_requests 512 520 96 13 13 1
nfs_read_data 0 0 384 0 0 1
nfs_write_data 0 0 384 0 0 1
nfs_page 0 0 96 0 0 1
dnotify cache 0 0 20 0 0 1
file lock cache 2 42 92 1 1 1
fasync cache 0 0 16 0 0 1
uid_cache 6 113 32 1 1 1
skbuff_head_cache 229 264 160 11 11 1
sock 31 36 832 4 4 2
sigqueue 0 0 132 0 0 1
cdev_cache 16 59 64 1 1 1
bdev_cache 8 59 64 1 1 1
Sep 12 11:30:15 ofs1 kernel: __alloc_pages: 0-order allocation failed (gfp=0x70/1).
Sep 12 11:30:15 ofs1 kernel: invalid operand: 0000
Sep 12 11:30:15 ofs1 kernel: CPU: 0
Sep 12 11:30:15 ofs1 kernel: EIP: 0010:[__alloc_pages+591/604]
Sep 12 11:30:15 ofs1 kernel: EFLAGS: 00010286
Sep 12 11:30:15 ofs1 kernel: eax: 0000003a ebx: 00000000 ecx: f7df6000 edx: 00000000
Sep 12 11:30:15 ofs1 kernel: esi: c028b208 edi: 00000000 ebp: f7df6000 esp: f7df7e74
Sep 12 11:30:15 ofs1 kernel: ds: 0018 es: 0018 ss: 0018
Sep 12 11:30:15 ofs1 kernel: Process kswapd (pid: 4, stackpage=f7df7000)
Sep 12 11:30:15 ofs1 kernel: Stack: 00000070 00000001 00000008 c02f7a00 00000001 c028b1fc 00000070 c012700e
Sep 12 11:30:15 ofs1 kernel: c0415a20 c012a499 c0415a20 c012a5ac f4ac0240 00000001 00000008 c02f7a00
Sep 12 11:30:15 ofs1 kernel: c01a97c7 00000001 f4ac0240 00003009 f4ac0240 1f9f8d60 19a175af c02f7a28
Sep 12 11:30:15 ofs1 kernel: Call Trace: [_alloc_pages+22/24] [alloc_bounce_page+13/120] [create_bounce+40/380] [__make_request+135/1596] [ip_rcv+806/860]
Sep 12 11:30:15 ofs1 kernel: [generic_make_request+288/304] [submit_bh+69/96] [ll_rw_block+299/396] [sync_page_buffers+71/84] [try_to_free_buffers+281/316] [page_launder+603/1376]
Sep 12 11:30:15 ofs1 kernel: [do_try_to_free_pages+64/184] [kswapd+105/172] [kernel_thread+40/56]
Sep 12 11:30:15 ofs1 kernel:
Sep 12 11:30:15 ofs1 kernel: Code: 0f 0b 31 c0 5b 5e 5f 5d 83 c4 0c c3 90 83 fa 09 77 09 e8 82
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