kexec refuses to boot latest -mm - Kernel
This is a discussion on kexec refuses to boot latest -mm - Kernel ; Dhaval Giani wrote:
>>
>> Could you give more details of your setup? I'm trying to figure out
>> exactly what it is in kexec that goes goofy, but there seems to be an
>> enormous number of codepaths, all ...
-
Re: kexec refuses to boot latest -mm
Dhaval Giani wrote:
>>
>> Could you give more details of your setup? I'm trying to figure out
>> exactly what it is in kexec that goes goofy, but there seems to be an
>> enormous number of codepaths, all different, depending on things like which
>> kind of kernel. The more closely I can replicate your failure, the quicker
>> I should be able to locate the problem.
>>
>
>
> (Anything else you need, please let me know!)
- Is your pre- and post-kexec kernels the same kernel?
- What format are you using for the post-kexec kernel?
- Exact kexec command line?
- Exact boot configuration for the pre-kexec kernel?
If you can send me the images that would be extra helpful.
Thanks!
-hpa
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Re: crashing on lowmem-only config (was: kexec refuses to boot latest -mm)
Dhaval Giani wrote:
>
> .config
>
This appears to be unrelated, but booting this configuration on a stock
2.6.24-rc7 kernel crashes during bootup with no initrd if the memory
size is 896 MB or less (i.e. lowmem only):
Bad page state in process 'swapper'
page:c1b59800 flags:0xdead4aad mapping:00000000 mapcount:0 count:0
Trying to fix it up, but a reboot is needed
Backtrace:
Pid: 0, comm: swapper Not tainted 2.6.24-rc7 #1
[] show_trace_log_lvl+0x1a/0x2f
[] show_trace+0x12/0x14
[] dump_stack+0x6c/0x72
[] bad_page+0x67/0x93
[] __free_pages_ok+0x63/0x2f3
[] __free_pages+0x24/0x26
[] __free_pages_bootmem+0x5f/0x63
[] free_all_bootmem_core+0xcd/0x1a4
[] free_all_bootmem+0xd/0xf
[] mem_init+0x81/0x31b
[] start_kernel+0x2af/0x335
[<00000000>] 0x0
=======================
Bad page state in process 'swapper'
[...]
=======================
BUG: spinlock lockup on CPU#0, swapper/0, 00000e28
Pid: 0, comm: swapper Tainted: G B 2.6.24-rc7 #1
[] show_trace_log_lvl+0x1a/0x2f
[] show_trace+0x12/0x14
[] dump_stack+0x6c/0x72
[] _raw_spin_lock+0xc1/0xe2
[] _spin_lock+0x32/0x38
[] __free_pages_ok+0x11e/0x2f3
[] __free_pages+0x24/0x26
[] __free_pages_bootmem+0x5f/0x63
[] free_all_bootmem_core+0xcd/0x1a4
[] free_all_bootmem+0xd/0xf
[] mem_init+0x81/0x31b
[] start_kernel+0x2af/0x335
[<00000000>] 0x0
=======================
[hang]
Booting with > 896 MB works...
-hpa
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