Messages in this thread | | | Date | Wed, 18 Jun 2008 15:59:28 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH 1/1] MM: virtual address debug |
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* Ingo Molnar <mingo@elte.hu> wrote:
> > * Jiri Slaby <jirislaby@gmail.com> wrote: > > > Add some (configurable) expensive sanity checking to catch wrong address > > translations on x86. > > > > - create linux/mmdebug.h file to be able include this file in > > asm headers to not get unsolvable loops in header files > > - __phys_addr on x86_32 became a function in ioremap.c since > > PAGE_OFFSET, is_vmalloc_addr and VMALLOC_* non-constasts are undefined > > if declared in page_32.h > > - add __phys_addr_const for initializing doublefault_tss.__cr3 > > applied, thanks Jiri. I have created a new tip/x86/mm-debug topic for > this because the patch touches mm/vmalloc.c and other MM bits.
-tip testing triggered an early boot crash and i have bisected it down to your patch. The crash:
No NUMA configuration found Faking a node at 0000000000000000-000000003fff0000 Entering add_active_range(0, 0, 159) 0 entries of 25600 used Entering add_active_range(0, 256, 262128) 1 entries of 25600 used Bootmem setup node 0 0000000000000000-000000003fff0000 NODE_DATA [000000000000a000 - 000000000003dfff] PANIC: early exception 06 rip 10:ffffffff80ba7531 error 0 cr2 f06f53 Pid: 0, comm: swapper Not tainted 2.6.26-rc6 #7709
Call Trace: [<ffffffff80b9c196>] early_idt_handler+0x56/0x6a [<ffffffff80ba7531>] setup_node_bootmem+0x12a/0x2d4 [<ffffffff80ba7505>] setup_node_bootmem+0xfe/0x2d4 [<ffffffff80b9dd73>] setup_arch+0x2a2/0x3e7 [<ffffffff8024e858>] clockevents_register_notifier+0x2d/0x31 [<ffffffff80b9cb5d>] start_kernel+0x8d/0x30a [<ffffffff80b9f87d>] reserve_early+0x16/0xad [<ffffffff80b9c35f>] x86_64_start_kernel+0x16d/0x174
RIP 0x10
the config is at:
http://redhat.com/~mingo/misc/config-Wed_Jun_18_14_51_18_CEST_2008.bad
Ingo
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