Attaching test case
Dear all,
We are running linux kernel 2.6.35.11 on Cortex a-8. when I run a
simple program expect to give oom.
But it crash with following crash log
./DiffSize
BUG: Bad page state in process DiffSize pfn:50769c
page:c9907380 count:892679477 mapcount:892679478 mapping:35353535
index:0x35353535
page flags: 0x35353535(locked|referenced|dirty|lru|owner_priv_1|reserved|private_2|writeback|swapcache|reclaim|swapbacked|unevictable)
Backtrace:
[<c0023b90>] (dump_backtrace+0x0/0x110) from [<c02de8f0>] (dump_stack+0x18/0x1c)
r6:c9907380 r5:c040674c r4:c9907380 r3:00000000
[<c02de8d8>] (dump_stack+0x0/0x1c) from [<c007b60c>] (bad_page+0xe0/0x10c)
[<c007b52c>] (bad_page+0x0/0x10c) from [<c007c864>]
(get_page_from_freelist+0x364/0x4bc)
r5:c03cd21c r4:00000000
[<c007c500>] (get_page_from_freelist+0x0/0x4bc) from [<c007cac8>]
(__alloc_pages_nodemask+0x10c/0x578)
[<c007c9bc>] (__alloc_pages_nodemask+0x0/0x578) from [<c008b3e0>]
(handle_mm_fault+0x218/0xd68)
[<c008b1c8>] (handle_mm_fault+0x0/0xd68) from [<c0026514>]
(do_page_fault+0x10c/0x200)
[<c0026408>] (do_page_fault+0x0/0x200) from [<c001f2bc>]
(do_DataAbort+0x3c/0xa0)
[<c001f280>] (do_DataAbort+0x0/0xa0) from [<c001ff24>]
(ret_from_exception+0x0/0x10)
Exception stack(0xc9281fb0 to 0xc9281ff8)
1fa0: 48166008 00000035 50166008 35353535
1fc0: 072be000 35353535 48ea7f88 4001f080 00000000 00000000 be87e880 be87e86c
1fe0: 48ea8008 be87e844 00008514 400b449c 20000010 ffffffff
r7:4001f080 r6:48ea7f88 r5:35353535 r4:ffffffff
Disabling lock debugging due to kernel taint
regards
Naveen
#include <stdio.h>
#include <malloc.h>
#include <string.h>
#define SIZE 4096
#define START_SIZE 1024
char *ptr[1000];
int main(int argc, char **argv)
{
int i=0;
unsigned int alloc_size = START_SIZE;
sleep(5);
while(i<1000)
{
ptr[i] = (char*) malloc(alloc_size);
if(ptr[i])
memset(ptr[i],'5',alloc_size);
alloc_size *= 2;
i++;
sleep(5);
}
}