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Extend libbpf-tools for Inspektor Gadget #5
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@alban in this PR three different container image tags are created: one for the standard tools, one for libbpf-based tools and another one that combines those two. Do you have any feedback on it? |
I am not sure to understand why we need to build those 3 flavours. Couldn't we just build the one that includes both standard tools and libbpf-based tools? |
I want to build three different to optimize the deployment in case the user chooses which mode to use when deploying Inspektor Gadget. But it's also true that we could just ship everything in a single image. |
alban
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Aug 9, 2021
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Add a helper to get information about a Kubernetes container given its mount ns id.
- add filtering by container - print container info - add --json parameter (not implemneted yet) Use a map that contains the mount namespace IDs to be considered.
- add filtering by container - print container info - add --json parameter (not implemneted yet)
- add filtering by container - print container info - add --json parameter (not implemneted yet)
- add filtering by container - print container info - add --json parameter (not implemneted yet)
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…for -v option
Add additional information and change format of backtrace
- add symbol base offset, dso name, dso base offset
- symbol and dso info is included if it's available in target binary
- changed format:
INDEX ADDR [SYMBOL+OFFSET] (MODULE+OFFSET)
Print backtrace of ip if it failed to get syms.
Before:
# offcputime -v
psiginfo
vscanf
__snprintf_chk
[unknown]
[unknown]
[unknown]
[unknown]
[unknown]
sd_event_exit
sd_event_dispatch
sd_event_run
[unknown]
__libc_start_main
[unknown]
- systemd-journal (204)
1
xas_load
xas_find
filemap_map_pages
__handle_mm_fault
handle_mm_fault
do_page_fault
do_translation_fault
do_mem_abort
do_el0_ia_bp_hardening
el0_ia
xas_load
--
failed to get syms
- PmLogCtl (138757)
1
After:
# offcputime -v
#0 0xffffffc01018b7e8 __arm64_sys_clock_nanosleep+0x0
#1 0xffffffc01009a93c el0_svc_handler+0x34
#2 0xffffffc010084a08 el0_svc+0x8
#3 0xffffffc01018b7e8 __arm64_sys_clock_nanosleep+0x0
--
#4 0x0000007fa0bffd14 clock_nanosleep+0x94 (/usr/lib/libc-2.31.so+0x9ed14)
#5 0x0000007fa0c0530c nanosleep+0x1c (/usr/lib/libc-2.31.so+0xa430c)
#6 0x0000007fa0c051e4 sleep+0x34 (/usr/lib/libc-2.31.so+0xa41e4)
#7 0x000000558a5a9608 flb_loop+0x28 (/usr/bin/fluent-bit+0x52608)
#8 0x000000558a59f1c4 flb_main+0xa84 (/usr/bin/fluent-bit+0x481c4)
#9 0x0000007fa0b85124 __libc_start_main+0xe4 (/usr/lib/libc-2.31.so+0x24124)
#10 0x000000558a59d828 _start+0x34 (/usr/bin/fluent-bit+0x46828)
- fluent-bit (1238)
1
#0 0xffffffc01027daa4 generic_copy_file_checks+0x334
#1 0xffffffc0102ba634 __handle_mm_fault+0x8dc
#2 0xffffffc0102baa20 handle_mm_fault+0x168
#3 0xffffffc010ad23c0 do_page_fault+0x148
#4 0xffffffc010ad27c0 do_translation_fault+0xb0
#5 0xffffffc0100816b0 do_mem_abort+0x50
#6 0xffffffc0100843b0 el0_da+0x1c
#7 0xffffffc01027daa4 generic_copy_file_checks+0x334
--
#8 0x0000007f8dc12648 [unknown]
#9 0x0000007f8dc0aef8 [unknown]
#10 0x0000007f8dc1c990 [unknown]
#11 0x0000007f8dc08b0c [unknown]
#12 0x0000007f8dc08e48 [unknown]
#13 0x0000007f8dc081c8 [unknown]
- PmLogCtl (2412)
1
Fixed: iovisor#3884
Signed-off-by: Eunseon Lee <es.lee@lge.com>
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This PR is a POC to make it possible to libbpf-based tools with Inspektor Gadget
The changes in this PR are:
TODO