MPC8272 runs application with segmentation fault
Kumar Gala
kumar.gala at freescale.com
Wed Jun 8 23:52:01 EST 2005
A few questions, where did you get the kernel for the 8272 you are
using? Can you report back what libc version you are running with.
Also, can see what entry in arch/ppc/kernel/cputable.c has a pvr_value
of 0x00820000 and report that back as well.
- kumar
On Jun 8, 2005, at 8:39 AM, Nai-Hsien wrote:
> Andrew,
> I believe I already modify my u-boot to detect the processor.
>
> If I statically link my program, I find that the program can run
> on my MPC8272 platform properly, so I think maybe the problem
> is caused by shared library. However, the same file system (of course,
> same shared library) can run on my MPC8245 platform.
>
> With the observation, I think my kernel is not handling shared library
> properly. Is there any part of the kernel I should check?
>
> I added some code in do_page_fault() to dump some information, shown
> as below, when my program get problem.
>
> PID=34(console): Trap=300, NIP=0x0ffc6d90, LR=0x0ffc6d20, VM:
> (start=0x30000000,
> end=0x30017000, flags=0x00000875), addr=0x2e313056
> Segmentation fault
>
> Thank you
> Dennis
>
>
> ----- Original Message -----
> From: Andrew <mailto:awilliam at nortel.com> Williams
> To: Nai-Hsien <mailto:dennis at loop.com.tw> ;
> linuxppc-embedded at ozlabs.org
> Sent: Tuesday, June 07, 2005 10:17 PM
> Subject: RE: MPC8272 runs application with segmentation fault
>
> Take a alook at the checkcpu() routine in /cpu/mpc8260/cpu.c .
> Validate that your CPU is correctly being identified, and thus
> initialized.
> We had identical symptoms with the 8270.
>
> We added the following after the case for the PVR_8260_HIP7:
>
> case PVR_8280a_HIP7:
> case PVR_8280_HIP7:
> k = 7;
> printf (CPU_ID_STR " (HiP%d Rev %02x, Mask ", k, rev);
> break;
>
> include/asm-ppc/processor.h
>
> #define PVR_8280_HIP7 0x80822013
> #define PVR_8280a_HIP7 0x80822014
>
> A.
>
> -----Original Message-----
> From: linuxppc-embedded-bounces at ozlabs.org
> [mailto:linuxppc-embedded-bounces at ozlabs.org] On Behalf Of Nai-Hsien
> Sent: June 7, 2005 9:11 AM
> To: linuxppc-embedded at ozlabs.org
> Subject: MPC8272 runs application with segmentation fault
>
>
> Dear experts,
>
> I have two hardware boards, one uses MPC8245 and the other one uses
> MPC8272.
> Initially, I use the MPC8245 board to port Linux 2.4.20 and write some
> applications.
> I already do a lot of test on the MPC8245 board and all my application
> programs work
> fine.
>
> After this, I use the same kernel configuration and same file system
> that are being used
> by the MPC8245 board to port the whole system to my MPC8272.
> Now, I can boot the kernel and run busybox well. However, when
> I run my application programs, I always get segmentation fault.
> Following is a strace
> dump. Could anybody give me some idea?
>
> Thank you
> Dennis
>
> ====================================================
> execve("sbin/console", ["sbin/console"], [/* 6 vars */]) = 0
> uname({sys="Linux", node="6200_linux", ...}) = 0
> brk(0) = 0x10059134
> open("/etc/ld.so.preload", O_RDONLY) = -1 ENOENT (No such file or
> directory)
> open("/etc/ld.so.cache", O_RDONLY) = -1 ENOENT (No such file or
> directory)
> open("/lib/libncurses.so.5", O_RDONLY) = 3
> read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\001"...,
> 1024) = 1024
> fstat64(0x3, 0x7ffff098) = 0
> mmap(0xff97000, 362628, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
> 0xff97000
> mprotect(0xffd4000, 112772, PROT_NONE) = 0
> mmap(0xffd7000, 86016, PROT_READ|PROT_WRITE|PROT_EXEC,
> MAP_PRIVATE|MAP_FIXED, 3, 0x30000) = 0xffd7000
> mmap(0xffec000, 14468, PROT_READ|PROT_WRITE|PROT_EXEC,
> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffec000
> close(3) = 0
> open("/lib/libdl.so.2", O_RDONLY) = 3
> read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\0\34"...,
> 1024) = 1024
> fstat64(0x3, 0x7ffff078) = 0
> mmap(0xff74000, 74812, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
> 0xff74000
> mprotect(0xff77000, 62524, PROT_NONE) = 0
> mmap(0xff84000, 12288, PROT_READ|PROT_WRITE|PROT_EXEC,
> MAP_PRIVATE|MAP_FIXED, 3, 0) = 0xff84000
> close(3) = 0
> open("/lib/libnsl.so.1", O_RDONLY) = 3
> read(3,
> "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\0A\274"..., 1024)
> = 1024
> fstat64(0x3, 0x7ffff058) = 0
> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x30017000
> mmap(0xff3e000, 152068, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
> 0xff3e000
> mprotect(0xff51000, 74244, PROT_NONE) = 0
> mmap(0xff5e000, 12288, PROT_READ|PROT_WRITE|PROT_EXEC,
> MAP_PRIVATE|MAP_FIXED, 3, 0x10000) = 0xff5e000
> mmap(0xff61000, 8708, PROT_READ|PROT_WRITE|PROT_EXEC,
> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xff61000
> close(3) = 0
> open("/lib/libc.so.6", O_RDONLY) = 3
> read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\1\322"...,
> 1024) = 1024
> fstat64(0x3, 0x7ffff038) = 0
> mmap(0xfddd000, 1379388, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
> 0xfddd000
> mprotect(0xff16000, 97340, PROT_NONE) = 0
> mmap(0xff1d000, 61440, PROT_READ|PROT_WRITE|PROT_EXEC,
> MAP_PRIVATE|MAP_FIXED, 3, 0x130000) = 0xff1d000
> mmap(0xff2c000, 7228, PROT_READ|PROT_WRITE|PROT_EXEC,
> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xff2c000
> close(3) = 0
> brk(0) = 0x10059134
> brk(0x1005a134) = 0x1005a134
> brk(0x1005b000) = 0x1005b000
> write(2, "before init_ncurses()\n", 22) = 22
> write(2, "before initscr()\n", 17) = 17
> access("/usr/share/terminfo/v/vt100", R_OK) = 0
> open("/usr/share/terminfo/v/vt100", O_RDONLY) = 3
> read(3, "\32\1,\0\25\0\7\0\16\1\3\2", 12) = 12
> read(3, "vt100|vt100-am|dec vt100 (w/adva"..., 44) = 44
> read(3, "\0\1\0\0\1\0\0\0\0\0\0\0\0\0\1\0\0\0\0\0\1", 21) = 21
> read(3, "\0", 1) = 1
> read(3, "P\0\10\0\30\0\377\377\377\377\377\377\3\0", 14) = 14
> read(3, "\377\377\0\0\2\0\4\0\25\0\32\0&\0.\0\377\377\377\3777\0"...,
> 540) = 540
> read(3, "\7\0\r\0\33[%i%p1%d;%p2%dr\0\33[3g\0\33[H\33[J"..., 515) = 515
> read(3, "", 1) = 0
> read(3, "", 10) = 0
> close(3) = 0
> -- SIGSEGV (Segmentation fault) @ 0 (0) ---
> +++ killed by SIGSEGV +++
> Segmentation fault
>
>
>
> <ATT169162.txt>
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