[Bug 1218163] New: debugging symbols missing in debug kernel
https://bugzilla.suse.com/show_bug.cgi?id=1218163 Bug ID: 1218163 Summary: debugging symbols missing in debug kernel Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Minor Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: martin@dev2day.de QA Contact: qa-bugs@suse.de Target Milestone: --- Found By: --- Blocker: --- Hi :) The debugging symbols are missing in the debug kernel. Steps to reproduce: ``` # update and install sudo zypper dup sudo zypper install kernel-debug # some additional information uname -a Linux opensuse-Tumbleweed-x86-64 6.6.6-1-default #1 SMP PREEMPT_DYNAMIC Mon Dec 11 09:46:39 UTC 2023 (a946a9f) x86_64 x86_64 x86_64 GNU/Linux cat /etc/os-release NAME="openSUSE Tumbleweed" # VERSION="20231215" ID="opensuse-tumbleweed" ID_LIKE="opensuse suse" VERSION_ID="20231215" PRETTY_NAME="openSUSE Tumbleweed" ANSI_COLOR="0;32" CPE_NAME="cpe:/o:opensuse:tumbleweed:20231215" BUG_REPORT_URL="https://bugzilla.opensuse.org" SUPPORT_URL="https://bugs.opensuse.org" HOME_URL="https://www.opensuse.org" DOCUMENTATION_URL="https://en.opensuse.org/Portal:Tumbleweed" LOGO="distributor-logo-Tumbleweed" ``` After the installation of `kernel-debug` a new kernel appears under `/usr/lib/modules/6.6.6-1-debug/vmlinux.xz`. Decompress the kernel with `xz -d vmlinux.xz`. Show file information about the kernel with `file vmlinux` (note this is the decompressed kernel): ``` vmlinux: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, BuildID[sha1]=9d90cec54c25e489b986b1c3a586c994e6b4842a, not stripped ``` `not stripped` is good but `with debug_info` is missing. Also `readelf` cannot find any information: ``` readelf --debug-dump=info vmlinux <no output here...> ``` The sections look like this: ``` readelf -S vmlinux There are 48 section headers, starting at offset 0x40779d0: Section Headers: [Nr] Name Type Address Offset Size EntSize Flags Link Info Align [ 0] NULL 0000000000000000 00000000 0000000000000000 0000000000000000 0 0 0 [ 1] .text PROGBITS ffffffff81000000 00200000 0000000001000000 0000000000000000 AX 0 0 4096 [ 2] .rodata PROGBITS ffffffff82000000 01200000 00000000006f7006 0000000000000000 WA 0 0 4096 [ 3] .pci_fixup PROGBITS ffffffff826f7010 018f7010 0000000000003b70 0000000000000000 A 0 0 16 [ 4] .tracedata PROGBITS ffffffff826fab80 018fab80 0000000000000078 0000000000000000 A 0 0 1 [ 5] .printk_index PROGBITS ffffffff826fabf8 018fabf8 0000000000012f70 0000000000000000 WA 0 0 8 [ 6] __ksymtab PROGBITS ffffffff8270db68 0190db68 00000000000110d0 0000000000000000 A 0 0 4 [ 7] __ksymtab_gpl PROGBITS ffffffff8271ec38 0191ec38 000000000001206c 0000000000000000 A 0 0 4 [ 8] __kcrctab PROGBITS ffffffff82730ca4 01930ca4 0000000000005af0 0000000000000000 A 0 0 1 [ 9] __kcrctab_gpl PROGBITS ffffffff82736794 01936794 0000000000006024 0000000000000000 A 0 0 1 [10] __ksymtab_strings PROGBITS ffffffff8273c7b8 0193c7b8 000000000003a63b 0000000000000001 AMS 0 0 1 [11] __init_rodata PROGBITS ffffffff82776e00 01976e00 00000000000000b0 0000000000000000 A 0 0 32 [12] __param PROGBITS ffffffff82776eb0 01976eb0 00000000000031d8 0000000000000000 A 0 0 8 [13] __modver PROGBITS ffffffff8277a088 0197a088 0000000000000288 0000000000000000 WA 0 0 8 [14] __ex_table PROGBITS ffffffff8277a310 0197a310 0000000000001c20 0000000000000000 A 0 0 4 [15] .notes NOTE ffffffff8277bf30 0197bf30 00000000000001d8 0000000000000000 A 0 0 4 [16] .BTF PROGBITS ffffffff8277c108 0197c108 00000000004c7bec 0000000000000000 A 0 0 1 [17] .BTF_ids PROGBITS ffffffff82c43cf4 01e43cf4 0000000000000b00 0000000000000000 A 0 0 1 [18] .data PROGBITS ffffffff82e00000 02000000 00000000003092c0 0000000000000000 WA 0 0 8192 [19] __bug_table PROGBITS ffffffff831092c0 023092c0 000000000001c5f0 0000000000000000 WA 0 0 1 [20] .orc_header PROGBITS ffffffff831258b0 023258b0 0000000000000014 0000000000000000 A 0 0 4 [21] .orc_unwind_ip PROGBITS ffffffff831258c4 023258c4 00000000001a81f4 0000000000000000 A 0 0 1 [22] .orc_unwind PROGBITS ffffffff832cdab8 024cdab8 000000000027c2ee 0000000000000000 A 0 0 1 [23] .orc_lookup NOBITS ffffffff83549da8 02749da6 0000000000040004 0000000000000000 WA 0 0 1 [24] .vvar PROGBITS ffffffff8358a000 0278a000 0000000000001000 0000000000000000 WA 0 0 16 [25] .data..percpu PROGBITS 0000000000000000 02800000 000000000003d000 0000000000000000 WA 0 0 16384 [26] .init.text PROGBITS ffffffff835c8000 029c8000 00000000000a53e4 0000000000000000 AX 0 0 16 [27] .altinstr_aux PROGBITS ffffffff8366d3e4 02a6d3e4 00000000000035a6 0000000000000000 AX 0 0 1 [28] .init.data PROGBITS ffffffff83672000 02a72000 00000000001d6208 0000000000000000 WA 0 0 8192 [29] .x86_cpu_dev.init PROGBITS ffffffff83848208 02c48208 0000000000000028 0000000000000000 A 0 0 8 [30] .parainstructions PROGBITS ffffffff83848230 02c48230 0000000000010870 0000000000000000 A 0 0 8 [31] .retpoline_sites PROGBITS ffffffff83858aa0 02c58aa0 00000000000095f0 0000000000000000 A 0 0 1 [32] .return_sites PROGBITS ffffffff83862090 02c62090 00000000000391f4 0000000000000000 A 0 0 1 [33] .call_sites PROGBITS ffffffff8389b288 02c9b288 00000000000e9958 0000000000000000 A 0 0 1 [34] .ibt_endbr_seal PROGBITS ffffffff83984be0 02d84be0 000000000000b34c 0000000000000000 A 0 0 1 [35] .altinstructions PROGBITS ffffffff8398ff30 02d8ff30 00000000000110d6 0000000000000000 A 0 0 1 [36] .altinstr_re[...] PROGBITS ffffffff839a1006 02da1006 000000000000353a 0000000000000000 AX 0 0 1 [37] .apicdrivers PROGBITS ffffffff839a4540 02da4540 0000000000000030 0000000000000000 WA 0 0 8 [38] .exit.text PROGBITS ffffffff839a4570 02da4570 0000000000001ebb 0000000000000000 AX 0 0 16 [39] .smp_locks PROGBITS ffffffff839a7000 02da7000 000000000000a000 0000000000000000 A 0 0 4 [40] .data_nosave PROGBITS ffffffff839b1000 02db1000 0000000000001000 0000000000000000 WA 0 0 4 [41] .bss NOBITS ffffffff839b2000 02db2000 000000000044e000 0000000000000000 WA 0 0 4096 [42] .brk NOBITS ffffffff83e00000 02db2000 0000000000030000 0000000000000000 WA 0 0 1 [43] .init.scratch PROGBITS ffffffff84000000 03400000 0000000000400000 0000000000000000 WA 0 0 32 [44] .gnu_debuglink PROGBITS 0000000000000000 03800000 0000000000000014 0000000000000000 0 0 4 [45] .symtab SYMTAB 0000000000000000 03800018 0000000000501d38 0000000000000018 46 159778 8 [46] .strtab STRTAB 0000000000000000 03d01d50 0000000000375a61 0000000000000000 0 0 1 [47] .shstrtab STRTAB 0000000000000000 040777b1 000000000000021c 0000000000000000 0 0 1 Key to Flags: W (write), A (alloc), X (execute), M (merge), S (strings), I (info), L (link order), O (extra OS processing required), G (group), T (TLS), C (compressed), x (unknown), o (OS specific), E (exclude), D (mbind), l (large), p (processor specific) ``` Expected result: I would like to have debug symbols when installing the `kernel-debug` package. Thanks a lot! -- You are receiving this mail because: You are the assignee for the bug.
https://bugzilla.suse.com/show_bug.cgi?id=1218163 https://bugzilla.suse.com/show_bug.cgi?id=1218163#c2 Martin Clauss <martin@dev2day.de> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|NEW |RESOLVED Flags|needinfo?(martin@dev2day.de | |) | --- Comment #2 from Martin Clauss <martin@dev2day.de> --- (In reply to Takashi Iwai from comment #1)
Have you installed kernel-debug-debuginfo and kernel-debug-debugsource?
Sorry, my bad. I did not enable the corresponding repos before so I did not find the packages that you mentioned. I thought this documentation was out of date and that the `kernel-debug` package contains everything I need. Thanks! :) -- You are receiving this mail because: You are the assignee for the bug.
https://bugzilla.suse.com/show_bug.cgi?id=1218163 https://bugzilla.suse.com/show_bug.cgi?id=1218163#c3 Martin Clauss <martin@dev2day.de> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|INVALID |--- Status|RESOLVED |REOPENED --- Comment #3 from Martin Clauss <martin@dev2day.de> --- I have one more question :) The debug kernel is missing some of the section contents (e. g. .rodata or .text): readelf -S --wide /usr/lib/debug/usr/lib/modules/6.6.7-1-debug/vmlinux.debug There are 57 section headers, starting at offset 0xb82d388: Section Headers: [Nr] Name Type Address Off Size ES Flg Lk Inf Al [ 0] NULL 0000000000000000 000000 000000 00 0 0 0 [ 1] .text NOBITS ffffffff81000000 200000 1000000 00 AX 0 0 4096 [ 2] .rodata NOBITS ffffffff82000000 200000 6f8006 00 WA 0 0 4096 [ 3] .pci_fixup NOBITS ffffffff826f8010 200000 003b70 00 A 0 0 16 [ 4] .tracedata NOBITS ffffffff826fbb80 200000 000078 00 A 0 0 1 [ 5] .printk_index NOBITS ffffffff826fbbf8 200000 012f80 00 WA 0 0 8 [ 6] __ksymtab NOBITS ffffffff8270eb78 200000 0110dc 00 A 0 0 4 [ 7] __ksymtab_gpl NOBITS ffffffff8271fc54 200000 01206c 00 A 0 0 4 [ 8] __kcrctab NOBITS ffffffff82731cc0 200000 005af4 00 A 0 0 1 [ 9] __kcrctab_gpl NOBITS ffffffff827377b4 200000 006024 00 A 0 0 1 [10] __ksymtab_strings NOBITS ffffffff8273d7d8 200000 03a65e 01 AMS 0 0 1 [11] __init_rodata NOBITS ffffffff82777e40 200000 0000b0 00 A 0 0 32 [12] __param NOBITS ffffffff82777ef0 200000 0031d8 00 A 0 0 8 [13] __modver NOBITS ffffffff8277b0c8 200000 000288 00 WA 0 0 8 [14] __ex_table NOBITS ffffffff8277b350 200000 001c20 00 A 0 0 4 [15] .notes NOTE ffffffff8277cf70 197cf70 0001d8 00 A 0 0 4 [16] .BTF NOBITS ffffffff8277d148 197d148 4c7da3 00 A 0 0 1 [17] .BTF_ids NOBITS ffffffff82c44eec 197d148 000b00 00 A 0 0 1 [18] .data NOBITS ffffffff82e00000 1a00000 3092c0 00 WA 0 0 8192 [19] __bug_table NOBITS ffffffff831092c0 1a00000 01c5b4 00 WA 0 0 1 [20] .orc_header NOBITS ffffffff83125874 1a00000 000014 00 A 0 0 4 [21] .orc_unwind_ip NOBITS ffffffff83125888 1a00000 1a8288 00 A 0 0 1 [22] .orc_unwind NOBITS ffffffff832cdb10 1a00000 27c3cc 00 A 0 0 1 [23] .orc_lookup NOBITS ffffffff83549edc 1a00000 040004 00 WA 0 0 1 [24] .vvar NOBITS ffffffff8358a000 1a00000 001000 00 WA 0 0 16 [25] .data..percpu NOBITS 0000000000000000 1a00000 03d000 00 WA 0 0 16384 [26] .init.text NOBITS ffffffff835c8000 19c8000 0a5434 00 AX 0 0 16 [27] .altinstr_aux NOBITS ffffffff8366d434 19c8000 0035b8 00 AX 0 0 1 [28] .init.data NOBITS ffffffff83672000 19c8000 1d6228 00 WA 0 0 8192 [29] .x86_cpu_dev.init NOBITS ffffffff83848228 19c8000 000028 00 A 0 0 8 [30] .parainstructions NOBITS ffffffff83848250 19c8000 010860 00 A 0 0 8 [31] .retpoline_sites NOBITS ffffffff83858ab0 19c8000 009600 00 A 0 0 1 [32] .return_sites NOBITS ffffffff838620b0 19c8000 03920c 00 A 0 0 1 [33] .call_sites NOBITS ffffffff8389b2c0 19c8000 0e98cc 00 A 0 0 1 [34] .ibt_endbr_seal NOBITS ffffffff83984b90 19c8000 00b350 00 A 0 0 1 [35] .altinstructions NOBITS ffffffff8398fee0 19c8000 011082 00 A 0 0 1 [36] .altinstr_replacement NOBITS ffffffff839a0f62 19c8000 00351f 00 AX 0 0 1 [37] .apicdrivers NOBITS ffffffff839a4488 19c8000 000030 00 WA 0 0 8 [38] .exit.text NOBITS ffffffff839a44c0 19c8000 001ebb 00 AX 0 0 16 [39] .smp_locks NOBITS ffffffff839a7000 19c8000 00a000 00 A 0 0 4 [40] .data_nosave NOBITS ffffffff839b1000 19c8000 001000 00 WA 0 0 4 [41] .bss NOBITS ffffffff839b2000 19c8000 44e000 00 WA 0 0 4096 [42] .brk NOBITS ffffffff83e00000 19c8000 030000 00 WA 0 0 1 [43] .init.scratch NOBITS ffffffff84000000 19c8000 400000 00 WA 0 0 32 [44] .debug_aranges PROGBITS 0000000000000000 197d150 02b8b0 00 0 0 16 [45] .debug_info PROGBITS 0000000000000000 19a8a00 5695db9 00 0 0 1 [46] .debug_abbrev PROGBITS 0000000000000000 703e7b9 4856f0 00 0 0 1 [47] .debug_line PROGBITS 0000000000000000 74c3ea9 162665b 00 0 0 1 [48] .debug_frame PROGBITS 0000000000000000 8aea508 2bf1e0 00 0 0 8 [49] .debug_str PROGBITS 0000000000000000 8da96e8 3fab91 01 MS 0 0 1 [50] .debug_line_str PROGBITS 0000000000000000 91a4279 01946a 01 MS 0 0 1 [51] .debug_loclists PROGBITS 0000000000000000 91bd6e3 1a58bc3 00 0 0 1 [52] .debug_rnglists PROGBITS 0000000000000000 ac162a6 3898d7 00 0 0 1 [53] .comment PROGBITS 0000000000000000 af9fb7d 000056 01 MS 0 0 1 [54] .symtab SYMTAB 0000000000000000 af9fbd8 511770 18 55 162442 8 [55] .strtab STRTAB 0000000000000000 b4b1348 37bda6 00 0 0 1 [56] .shstrtab STRTAB 0000000000000000 b82d0ee 000293 00 0 0 1 Key to Flags: W (write), A (alloc), X (execute), M (merge), S (strings), I (info), L (link order), O (extra OS processing required), G (group), T (TLS), C (compressed), x (unknown), o (OS specific), E (exclude), D (mbind), l (large), p (processor specific) The offset is the same (200000) for a lot of those sections... I would need this information for my purpose. Is there a reason why this information is missing? Is there a way to obtain a "complete" kernel with debug information? Thanks a lot! Best Martin -- You are receiving this mail because: You are the assignee for the bug.
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