Hi,
sometimes I get 'Unexpected trap while booting Fiasco' when booting L4Re with grub 0.97. How often this happens seems to depend on the loaded modules, but I haven't been able to determine some rule when it will happen. It does not depend on the number or total size of the modules reaching a certain size. However, since we upgraded to l4re-snapshot-2013060718 from -2013021819, it always happen for me in the below module configuration (it only happened rarely before the upgrade).
It looks like parts of fiasco are not mapped at the correct address. Do you have any idea what could cause this?
Cheers, Stefan
L4 Bootstrapper Build: #1 Mon Jul 29 19:27:21 CEST 2013, x86-32, 4.4.5 Limiting 'RAM' region [ 40005000, c4eb9fff] { 84eb5000} to [ 40005000, bcffffff] { 7cffb000} due to 3024 MB address limit Dropping 'RAM' region [ c50bc000, d82eefff] { 13233000} due to 3024 MB address limit Dropping 'RAM' region [ dafff000, daffffff] { 1000} due to 3024 MB address limit Dropping 'RAM' region [100000000, 11e5fffff] { 1e600000} due to 3024 MB address limit RAM: 0000000000000000 - 000000000009d7ff: 630kB RAM: 0000000000100000 - 000000001fffffff: 523264kB RAM: 0000000020200000 - 0000000040003fff: 522256kB RAM: 0000000040005000 - 00000000bcffffff: 2047980kB Total RAM: 3021MB Moving up to 22 modules behind 1100000 moving module 00 { 319000-3adc23 } -> { a669000-a6fdc23 } [609316] moving module 01 { 3ae000-3f0a71 } -> { a6fe000-a740a71 } [273010] moving module 02 { 3f1000-5be834 } -> { a741000-a90e834 } [1890357] moving module 03 { 5bf000-6ae6e5 } -> { 9882000-99716e5 } [980710] moving module 04 { 6af000-792266 } -> { 9972000-9a55266 } [930407] moving module 05 { 793000-996b94 } -> { 9a56000-9c59b94 } [2112405] moving module 06 { 997000-99802b } -> { 9c5a000-9c5b02b } [4140] moving module 07 { 999000-12e9408 } -> { 9c5c000-a5ac408 } [9765897] moving module 08 { 12ea000-12eab20 } -> { 1100000-1100b20 } [2849] moving module 09 { 12eb000-12eb547 } -> { 1101000-1101547 } [1352] moving module 10 { 12ec000-13da7a1 } -> { 1102000-11f07a1 } [976802] moving module 11 { 13db000-1a39b4e } -> { 11f1000-184fb4e } [6679375] moving module 12 { 1a3a000-7839fff } -> { 1850000-764ffff } [98566144] moving module 13 { 783a000-7c6b5ee } -> { 7650000-7a815ee } [4396527] moving module 14 { 7c6c000-8eebfff } -> { 7a82000-8d01fff } [19398656] moving module 15 { 8eec000-8eec025 } -> { 8d02000-8d02025 } [38] moving module 16 { 8eed000-8ef0f17 } -> { 8d03000-8d06f17 } [16152] moving module 17 { 8ef1000-8f5d42b } -> { 8d07000-8d7342b } [443436] moving module 18 { 8f5e000-942ca58 } -> { 8d74000-9242a58 } [5040729] moving module 19 { 942d000-9610fff } -> { 9243000-9426fff } [1982464] moving module 20 { 9611000-9880749 } -> { 9427000-9696749 } [2553674] moving module 21 { 9881000-988119e } -> { 9697000-969719e } [415] moving module 03 { 9882000-99716e5 } -> { 9698000-97876e5 } [980710] moving module 04 { 9972000-9a55266 } -> { 9788000-986b266 } [930407] moving module 05 { 9a56000-9c59b94 } -> { 986c000-9a6fb94 } [2112405] moving module 06 { 9c5a000-9c5b02b } -> { 9a70000-9a7102b } [4140] moving module 07 { 9c5c000-a5ac408 } -> { 9a72000-a3c2408 } [9765897] Scanning /l4/fiasco -serial_esc -esc -noscreen Scanning /l4/sigma0 Scanning /l4/moe rom/vs-top.cfg Bootloader MMAP: [ 0, 9d800) RAM (1) [ 9d800, a0000) reserved (2) [ e0000, 100000) reserved (2) [ 100000, 20000000) RAM (1) [ 20000000, 20200000) reserved (2) [ 20200000, 40004000) RAM (1) [ 40004000, 40005000) reserved (2) [ 40005000, c4eba000) RAM (1) [ c4eba000, c50bc000) reserved (2) [ c50bc000, d82ef000) RAM (1) [ d82ef000, daeef000) reserved (2) [ daeef000, daf9f000) ACPI NVS (4) [ daf9f000, dafff000) ACPI (3) [ dafff000, db000000) RAM (1) [ db000000, dfa00000) reserved (2) [ f8000000, fc000000) reserved (2) [ fec00000, fec01000) reserved (2) [ fed08000, fed09000) reserved (2) [ fed10000, fed18000) reserved (2) [ fed18000, fed19000) reserved (2) [ fed19000, fed1a000) reserved (2) [ fed1c000, fed20000) reserved (2) [ fee00000, fee01000) reserved (2) [ ffca0000, 100000000) reserved (2) [100000000, 11e600000) RAM (1) Relocated mbi to [0x2e0000-0x2e0304] Loading /l4/fiasco Loading /l4/sigma0 Loading /l4/moe find kernel info page... found kernel info page at 0x400000 Regions of list 'regions' [ 0, fff] { 1000} Arch BIOS [ 1000, 1fff] { 1000} Kern /l4/fiasco [ 9d800, 9ffff] { 2800} Arch BIOS [ e0000, fffff] { 20000} Arch BIOS [ 100000, 10a1b3] { a1b4} Sigma0 /l4/sigma0 [ 140000, 18c25f] { 4c260} Root /l4/moe [ 2d0000, 2e4427] { 14428} Boot bootstrap [ 2e0000, 2e0401] { 402} Root Multiboot info [ 300000, 38ffff] { 90000} Kern /l4/fiasco [ 400000, 49dfff] { 9e000} Kern /l4/fiasco [ 1100000, a3c2408] { 92c2409} Root Module [ 20000000, 201fffff] { 200000} Arch BIOS [ 40004000, 40004fff] { 1000} Arch BIOS [ c4eba000, c50bbfff] { 202000} Arch BIOS [ d82ef000, daeeefff] { 2c00000} Arch BIOS [ daeef000, daf9efff] { b0000} Arch BIOS [ daf9f000, daffefff] { 60000} Arch BIOS [ db000000, df9fffff] { 4a00000} Arch BIOS [ f8000000, fbffffff] { 4000000} Arch BIOS [ fec00000, fec00fff] { 1000} Arch BIOS [ fed08000, fed08fff] { 1000} Arch BIOS [ fed10000, fed19fff] { a000} Arch BIOS [ fed1c000, fed1ffff] { 4000} Arch BIOS [ fee00000, fee00fff] { 1000} Arch BIOS [ ffca0000, ffffffff] { 360000} Arch BIOS API Version: (87) experimental Sigma0 config ip:001001dc sp:002df150 Roottask config ip:001401c4 sp:00000000 Starting kernel /l4/fiasco at 00300834
EAX f0000000 EBX 2BADB002 ECX 00303000 EDX 00400000 ESI 00035dac EDI 002d81cf EBP 0038fd28 ESP 0038fd20 EIP f00653f0 EFLAGS 00013046 CS 0010 SS 0018 DS 0018 ES 0018 FS 0000 GS 0000 trapno 14, error 00000000, from kernel mode page fault linear address f00653f0 00300055 002dce5c 002dcfe8 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 Unexpected trap while booting Fiasco!
objdump shows that EIP/pagefault address is the start of init_global_kip():
f00653f0 g F .text 00000014 _ZN3Kip15init_global_kipEPS_