[haiku-bugs] Re: [Haiku] #11470: [Boot Loader] goes into Death Land with 4 CPUs in VMware
- From: "bonefish" <trac@xxxxxxxxxxxx>
- Date: Sat, 15 Nov 2014 13:22:34 -0000
#11470: [Boot Loader] goes into Death Land with 4 CPUs in VMware
----------------------------------+----------------------------
Reporter: diver | Owner: bonefish
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: System/Boot Loader | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
----------------------------------+----------------------------
Changes (by bonefish):
* cc: anevilyak, jackburton, korli (added)
Comment:
Stack trace is:
{{{
acpi_validate_rsdt(acpi_descriptor_header *)
acpi_check_rsdt(acpi_rsdp_extended *)
acpi_init()
_start()
multiboot_start()
}}}
Disassembly with crashing instruction:
{{{
00013f50 <acpi_validate_rsdt(acpi_descriptor_header *)>:
13f50: 55 push %ebp
13f51: 89 e5 mov %esp,%ebp
13f53: 53 push %ebx
13f54: 8b 55 08 mov 0x8(%ebp),%edx
13f57: 89 d3 mov %edx,%ebx
13f59: b1 00 mov $0x0,%cl
13f5b: 31 c0 xor %eax,%eax
13f5d: 3b 42 04 cmp 0x4(%edx),%eax
13f60: 73 0e jae 13f70
<acpi_validate_rsdt(acpi_descriptor_header *)+0x20>
13f62: 8b 52 04 mov 0x4(%edx),%edx
13f65: 8d 76 00 lea 0x0(%esi),%esi
>> 13f68: 02 0c 18 add (%eax,%ebx,1),%cl
13f6b: 40 inc %eax
13f6c: 39 d0 cmp %edx,%eax
13f6e: 72 f8 jb 13f68
<acpi_validate_rsdt(acpi_descriptor_header *)+0x18>
13f70: 31 c0 xor %eax,%eax
13f72: 84 c9 test %cl,%cl
13f74: 74 05 je 13f7b
<acpi_validate_rsdt(acpi_descriptor_header *)+0x2b>
13f76: b8 10 00 00 80 mov $0x80000010,%eax
13f7b: 5b pop %ebx
13f7c: 89 ec mov %ebp,%esp
13f7e: 5d pop %ebp
13f7f: c3 ret
}}}
The crashing instruction corresponds to the source line `checksum +=
data[i];` (cf. [http://cgit.haiku-
os.org/haiku/tree/src/system/boot/platform/bios_ia32/acpi.cpp?id=f9ac1e93fb1ba12163bff4128efb54d8e548e4a8#n77
src/system/boot/platform/bios_ia32/acpi.cpp]). `i` is 0x51 (eax) which
moves the read access to the next page (0x81106000), which is apparently
not mapped. CC'ing to the people who touched the code in the past.
--
Ticket URL: <https://dev.haiku-os.org/ticket/11470#comment:5>
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