Exception occurs while uncompressing linux kernel
Sometimes while uncompressing the kernel image (gunzip), an illegal instruction program exception occurs. U-boot displays the registers, reboots, and usually doesn't have any problems loading the kernel. I'm having a hard time debugging the cause since the problem is intermittent. Has anyone experienced this? Is it due to a problem with the RAM? Any suggestions are greatly appreciated. Thanks, Farrah.
Hit any key to stop autoboot: 0
## Booting image at 00400000 ...
Image Name: Linux-2.6.15 daqNet H11764D Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 739864 Bytes = 722.5 kB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Uncompressing Kernel Image ... NIP: 07FEB04C XER: 20000000 LR:
07FEB9E0 REGS8
MSR: 00021000 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00
GPR00: 00000000 07FA4FF0 000038B0 07FCE854 00000013 00000013 00000000 07FA4FF8
GPR08: FFFFFFFA 07FA5100 07FA4FF8 00000002 07FA50B4 00004340 08004800 07FA503C
GPR16: FFFFFFFF 00000000 00000006 000B4A0D 00000000 00000002 000B4A06 00000006
GPR24: 00000007 00400052 00000005 00000000 00000000 07FA5F58 080048B0 07FA5AE0
** Illegal Instruction **
Call backtrace:
Program Check Exception
Quoted 2 lines · In message <[email protected]> you wrote:
Sometimes while uncompressing the kernel image (gunzip), an illegal instruction program exception occurs. U-boot displays the registers, reboots, and usually doesn't have any problems loading the kernel. I'm having a hard time debugging the cause sinc e the problem is intermittent. Has anyone experienced this? Is it due to a problem with the RAM? Any suggestions are greatly appreciated. Thanks, Farrah.
Yes, this smells like memory problems.
BTW: please restrict your line length to the usual 70 characters or so.
Best regards,
Wolfgang Denk
Signature · 5 lines
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de No question is too silly to ask. Of course, some questions are too silly to to answer... - L. Wall & R. L. Schwartz, _Programming Perl_