Hi,
I continue having problems with the memory subsystem in this
kernel. My system is a uniprocessor Athlon with 256MB of RAM.
I will try to reproduce it in pre6(final), but each time is
more difficult for me to reproduce the BUGS(). Each time they
are less easily reproducible.
I have get the following Oops:
kernel BUG at swap_state.c:56!
if (page->mapping)
BUG();
And the actual Oops is:
invalid operand: 0000
CPU: 0
EIP: 0010:[<c012a417>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010282
eax: 0000001f ebx: c1000290 ecx: 0000000e edx: 00000000
esi: c1000290 edi: c98d97fc ebp: c2560200 esp: c15a1f08
ds: 0018 es: 0018 ss: 0018
Process kswapd (pid: 2, stackpage=c15a1000)
Stack: c01dbbc3 c01dbe2f 00000038 00b59b00 c0129418 c1000290 00b59b00 00b59b00
77600000 77800000 c98d97fc 77800000 00b59b00 c012959f c2560200 775ff000
c98d97fc 00000004 c2560200 775ff000 ca985d80 00000004 779ff000 779ff000
Call Trace: [<c01dbbc3>] [<c01dbe2f>] [<c0129418>] [<c012959f>] [<c012964b>] [<c012973e>] [<c012980a>]
[<c0129895>] [<c0108df8>]
Code: 0f 0b 83 c4 0c 8d 74 26 00 8b 44 24 0c 50 68 10 83 21 c0 53
>>EIP; c012a417 <add_to_swap_cache+47/70> <=====
Trace; c01dbbc3 <tvecs+3663/1ba80>
Trace; c01dbe2f <tvecs+38cf/1ba80>
Trace; c0129418 <try_to_swap_out+178/1e0>
Trace; c012959f <swap_out_vma+11f/190>
Trace; c012964b <swap_out_mm+3b/70>
Trace; c012973e <swap_out+be/110>
Trace; c012980a <do_try_to_free_pages+7a/90>
Trace; c0129895 <kswapd+75/f0>
Trace; c0108df8 <kernel_thread+28/40>
Code; c012a417 <add_to_swap_cache+47/70>
00000000 <_EIP>:
Code; c012a417 <add_to_swap_cache+47/70> <=====
0: 0f 0b ud2a <=====
Code; c012a419 <add_to_swap_cache+49/70>
2: 83 c4 0c add $0xc,%esp
Code; c012a41c <add_to_swap_cache+4c/70>
5: 8d 74 26 00 lea 0x0(%esi,1),%esi
Code; c012a420 <add_to_swap_cache+50/70>
9: 8b 44 24 0c mov 0xc(%esp,1),%eax
Code; c012a424 <add_to_swap_cache+54/70>
d: 50 push %eax
Code; c012a425 <add_to_swap_cache+55/70>
e: 68 10 83 21 c0 push $0xc0218310
Code; c012a42a <add_to_swap_cache+5a/70>
13: 53 push %ebx
The second one is the one that I have reported several times to this
list. It happens just after the first. It is:
Bad swap file entry 0000bd60
Bad swap file entry 0000bd60
kernel BUG at page_alloc.c:104!
that is:
if (page->mapping)
BUG();
The actual Oops is:
invalid operand: 0000
CPU: 0
EIP: 0010:[<c0129c69>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010286
eax: 00000020 ebx: c1000290 ecx: c0216a7c edx: c0216a7c
esi: ffffffff edi: c59644c0 ebp: 00000000 esp: c3c2df04
ds: 0018 es: 0018 ss: 0018
Process test004 (pid: 4914, stackpage=c3c2d000)
Stack: c01db783 c01dba0f 00000068 c1000290 ffffffff c59644c0 c08d2ae0 c10002b8
c10002b8 00000286 00000023 c08d2ae0 c012a5f3 00400000 00000148 c011f381
c1000290 c2560980 30000000 40157000 ca985d80 c59644c0 4c000000 000000ec
Call Trace: [<c01db783>] [<c01dba0f>] [<c012a5f3>] [<c011f381>] [<c012160b>] [<c01216da>] [<c010af4c>]
Code: 0f 0b 83 c4 0c 89 f6 89 d8 2b 05 6c 80 21 c0 69 c0 39 8e e3
>>EIP; c0129c69 <__free_pages_ok+49/2a0> <=====
Trace; c01db783 <tvecs+3223/1ba80>
Trace; c01dba0f <tvecs+34af/1ba80>
Trace; c012a5f3 <free_page_and_swap_cache+83/90>
Trace; c011f381 <zap_page_range+171/1f0>
Trace; c012160b <do_munmap+1bb/230>
Trace; c01216da <sys_munmap+5a/b0>
Trace; c010af4c <system_call+34/38>
Code; c0129c69 <__free_pages_ok+49/2a0>
00000000 <_EIP>:
Code; c0129c69 <__free_pages_ok+49/2a0> <=====
0: 0f 0b ud2a <=====
Code; c0129c6b <__free_pages_ok+4b/2a0>
2: 83 c4 0c add $0xc,%esp
Code; c0129c6e <__free_pages_ok+4e/2a0>
5: 89 f6 mov %esi,%esi
Code; c0129c70 <__free_pages_ok+50/2a0>
7: 89 d8 mov %ebx,%eax
Code; c0129c72 <__free_pages_ok+52/2a0>
9: 2b 05 6c 80 21 c0 sub 0xc021806c,%eax
Code; c0129c78 <__free_pages_ok+58/2a0>
f: 69 c0 39 8e e3 00 imul $0xe38e39,%eax,%eax
If you need more information, let me know.
Later, Juan.
-- In theory, practice and theory are the same, but in practice they are different -- Larry McVoy- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sun Apr 30 2000 - 21:00:13 EST