https://sourceware.org/bugzilla/show_bug.cgi?id=32666
Bug ID: 32666
Summary: Incorrect .rela.sframe when using ld -r
Product: binutils
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: wnliu at google dot com
Target Milestone: ---
Created attachment 15936
--> https://sourceware.org/bugzilla/attachment.cgi?id=15936&action=edit
readelf dump for fat.ko
Incorrect .rela.sframe when using ld -r
When building kernel with the `-Wa,--gsframe` flag (for sframe support) results
in several instances of incorrect offset values within the .rela.sframe section
of the compiled kernel modules.
For example,
readelf -r ./fs/fat/fat.ko
```
...
Relocation section '.rela.sframe' at offset 0x1848a0 contains 129 entries:
Offset Info Type Sym. Value Sym. Name +
Addend
00000000001c 000100000105 R_AARCH64_PREL32 0000000000000000 .text + 8
000000000030 000100000105 R_AARCH64_PREL32 0000000000000000 .text + 28
000000000044 000100000105 R_AARCH64_PREL32 0000000000000000 .text + a8
000000000058 000200000105 R_AARCH64_PREL32 0000000000000000 .init.text + 8
00000000006c 000100000105 R_AARCH64_PREL32 0000000000000000 .text + 358
000000000080 000100000105 R_AARCH64_PREL32 0000000000000000 .text + 390
000000000094 000100000105 R_AARCH64_PREL32 0000000000000000 .text + 4c8
0000000000a8 000100000105 R_AARCH64_PREL32 0000000000000000 .text + 8f8
0000000000bc 000100000105 R_AARCH64_PREL32 0000000000000000 .text + a98
0000000001cc 000100000105 R_AARCH64_PREL32 0000000000000000 .text + b88
0000000001e0 000100000105 R_AARCH64_PREL32 0000000000000000 .text + dc0
...
0000000003c0 000100000105 R_AARCH64_PREL32 0000000000000000 .text + 4658
00000000077c 000100000105 R_AARCH64_PREL32 0000000000000000 .text + 4788
000000000790 000100000105 R_AARCH64_PREL32 0000000000000000 .text + 47e8
...
```
Tested with below code for arm64 target:
https://lore.kernel.org/linux-arm-kernel/20250127213310.2496133-1-wn...@google.com/
or
https://github.com/rgushchin/linux/tree/sframe_unwinder.rfc
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