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SubjectRe: Sparc32 oops in chmod (2.2.20 SMP)
On Mon, Apr 29, 2002 at 08:14:45PM +0200, frank@gevaerts.be wrote:
> Hi,
>
> I'm having some problems with my dual SparcServer 20. While
> doing a chmod() in /dev (while booting), it gives the following oops.
> The strange thing is : if I boot with console=/dev/ttyS1 ,
> with /dev/console being a symlink to /dev/ttyS0, the oops doesn't
> happen (but I don't get kernel messages, not even on ttyS1)
> The kernel was compiled with 2.95.2 (debian potato).
> This oops is 100% reproducible.
> I also get semi-random lockups (probably) during disk-io.
>
> I had (probably) the same problem with 2.2.14.

I took out one of the CPU modules, and everything seems to work fine now.
Since the machine won't even run SILO correctly with only the CPU I removed,
it seems clear to me that this is a hardware problem.

Frank

>
> Frank
>
>
> ksymoops 2.3.4 on sparc 2.2.20. Options used
> -V (default)
> -k /proc/ksyms (default)
> -l /proc/modules (default)
> -o /lib/modules/2.2.20/ (default)
> -m /boot/System.map-2.2.20 (default)
>
> Warning: You did not tell me where to find symbol information. I will
> assume that the log matches the kernel and modules that are running
> right now and I'll use the default options above for symbol resolution.
> If the current kernel and/or modules do not match the log, you can get
> more accurate output by telling me the kernel version and where to find
> map, modules, ksyms etc. ksymoops -h explains the options.
>
> No modules in ksyms, skipping objects
> Warning (read_lsmod): no symbols in lsmod, is /proc/modules a valid lsmod file?
> Warning (compare_maps): ksyms_base symbol module_list_R__ver_module_list not found in System.map. Ignoring ksyms_base entry
> Unable to handle kernel NULL pointer dereference<1>tsk->mm->context = 00000059
> tsk->mm->pgd = f7bb3000
> "@'/ ,. \`@"
> /_| \__/ |_\
> \__U_/
> chmod(97): Oops
> PSR: 401000c4 PC: f005d51c NPC: f005d520 Y: 1b000000
> Using defaults from ksymoops -t elf32-sparc -a sparc
> g0: f007a4f8 g1: f03c49b0 g2: 00000000 g3: 000000a0 g4: f004de20 g5: f01b8265 g6: f798a000 g7: 00000014
> o0: 00000000 o1: 00000900 o2: 00001000 o3: 000000c9 o4: f7e25600 o5: 00000014 sp: f798bc18 o7: f0079c94
> l0: 00000000 l1: f7e25600 l2: 00000000 l3: f0409b3c l4: 00000008 l5: f01b8265 l6: f798a000 l7: f0052a84
> i0: 00000000 i1: 000242ab i2: f01f3cd8 i3: 00000000 i4: 00000000 i5: 0000b700 fp: f798bc80 i7: f005d974
> Caller[f005d974]
> Caller[f005d9d8]
> Caller[f007bb38]
> Caller[f0055230]
> Caller[f0055638]
> Caller[f0055744]
> Caller[f0052ab8]
> Caller[f00154bc]
> Caller[f00c36b4]
> Instruction DUMP: 02800017 b0102000 b0100010 <d0062068> 80a20011 32bffffa e0040000 d0062018 80a20019
>
> >>PC; f005d51c <find_inode+20/78> <=====
> >>O7; f0079c94 <inode_getblk+68/294>
> >>I7; f005d974 <iget4+50/a4>
> Trace; f005d974 <iget4+50/a4>
> Trace; f005d9d8 <iget+10/20>
> Trace; f007bb38 <ext2_lookup+78/ac>
> Trace; f0055230 <real_lookup+6c/100>
> Trace; f0055638 <lookup_dentry+2ac/398>
> Trace; f0055744 <__namei+20/68>
> Trace; f0052ab8 <sys_newlstat+34/c8>
> Trace; f00154bc <syscall_is_too_hard+34/40>
> Trace; f00c36b4 <nlm_lookup_file+18c/248>
> Code; f005d510 <find_inode+14/78>
> 0000000000000000 <_PC>:
> Code; f005d510 <find_inode+14/78>
> 0: 02 80 00 17 be 5c <_PC+0x5c> f005d56c <find_inode+70/78>
> Code; f005d514 <find_inode+18/78>
> 4: b0 10 20 00 clr %i0
> Code; f005d518 <find_inode+1c/78>
> 8: b0 10 00 10 mov %l0, %i0
> Code; f005d51c <find_inode+20/78> <=====
> c: d0 06 20 68 ld [ %i0 + 0x68 ], %o0 <=====
> Code; f005d520 <find_inode+24/78>
> 10: 80 a2 00 11 cmp %o0, %l1
> Code; f005d524 <find_inode+28/78>
> 14: 32 bf ff fa bne,a fffffffffffffffc <_PC+0xfffffffffffffffc> f005d50c <find_inode+10/78>
> Code; f005d528 <find_inode+2c/78>
> 18: e0 04 00 00 ld [ %l0 ], %l0
> Code; f005d52c <find_inode+30/78>
> 1c: d0 06 20 18 ld [ %i0 + 0x18 ], %o0
> Code; f005d530 <find_inode+34/78>
> 20: 80 a2 00 19 cmp %o0, %i1
>
>
> 3 warnings issued. Results may not be reliable.
> -
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