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linux/arch/riscv/kernel/vdso
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Fangrui Song e0eb1b6b0c
riscv: vdso: Exclude .rodata from the PT_DYNAMIC segment 
.rodata is implicitly included in the PT_DYNAMIC segment due to
inheriting the segment of the preceding .dynamic section (in both GNU ld
and LLD).  When the .rodata section's size is not a multiple of 16
bytes on riscv64, llvm-readelf will report a "PT_DYNAMIC dynamic table
is invalid" warning.  Note: in the presence of the .dynamic section, GNU
readelf and llvm-readelf's -d option decodes the dynamic section using
the section.

This issue arose after commit 8f8c1ff879
("riscv: vdso.lds.S: remove hardcoded 0x800 .text start addr"), which
placed .rodata directly after .dynamic by removing .eh_frame.

This patch resolves the implicit inclusion into PT_DYNAMIC by explicitly
specifying the :text output section phdr.

Reported-by: Nathan Chancellor <nathan@kernel.org>
Closes: https://github.com/ClangBuiltLinux/linux/issues/2093
Signed-off-by: Fangrui Song <i@maskray.me>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20250602-riscv-vdso-v1-1-0620cf63cff0@maskray.me
Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
 		2025-06-10 13:06:48 -07:00
..
.gitignore RISC-V: Fix the VDSO symbol generaton for binutils-2.35+ 2020-11-06 00:03:48 -08:00
Makefile Merge tag 'riscv-mw2-6.16-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/alexghiti/linux into for-next 2025-06-05 14:03:16 -07:00
flush_icache.S riscv: Use SYM_*() assembly macros instead of deprecated ones 2023-11-06 09:42:47 -08:00
gen_vdso_offsets.sh riscv: explicitly use symbol offsets for VDSO 2021-08-24 21:45:47 -07:00
getcpu.S riscv: Use SYM_*() assembly macros instead of deprecated ones 2023-11-06 09:42:47 -08:00
getrandom.c RISC-V: vDSO: Wire up getrandom() vDSO implementation 2025-06-05 14:03:09 -07:00
hwprobe.c riscv: vdso: Switch to generic storage implementation 2025-02-21 09:54:02 +01:00
note.S riscv: add Linux note to vdso 2020-05-04 14:22:34 -07:00
rt_sigreturn.S riscv: Use SYM_*() assembly macros instead of deprecated ones 2023-11-06 09:42:47 -08:00
sys_hwprobe.S riscv: Use SYM_*() assembly macros instead of deprecated ones 2023-11-06 09:42:47 -08:00
vdso.S riscv: compat: vdso: Add COMPAT_VDSO base code implementation 2022-04-26 13:36:53 -07:00
vdso.lds.S riscv: vdso: Exclude .rodata from the PT_DYNAMIC segment 2025-06-10 13:06:48 -07:00
vgetrandom-chacha.S RISC-V: vDSO: Wire up getrandom() vDSO implementation 2025-06-05 14:03:09 -07:00
vgettimeofday.c arch: vdso: consolidate gettime prototypes 2023-11-23 11:32:32 +01:00