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| author | Pepper Gray <hello@peppergray.xyz> | 2026-03-10 14:44:28 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2026-03-13 14:15:34 +0000 |
| commit | d499e9627d70b1269020d59b95ed3e18bee6b8cd (patch) | |
| tree | f12abe21ca1bca85f2fc18cd725c9d8d84ae599e /arch/arm64/kernel | |
| parent | d87c828daa7ead9763416f75cc416496969cf1dc (diff) | |
| download | lwn-d499e9627d70b1269020d59b95ed3e18bee6b8cd.tar.gz lwn-d499e9627d70b1269020d59b95ed3e18bee6b8cd.zip | |
arm64/scs: Fix handling of advance_loc4
DW_CFA_advance_loc4 is defined but no handler is implemented. Its
CFA opcode defaults to EDYNSCS_INVALID_CFA_OPCODE triggering an
error which wrongfully prevents modules from loading.
Link: https://bugs.gentoo.org/971060
Signed-off-by: Pepper Gray <hello@peppergray.xyz>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel')
| -rw-r--r-- | arch/arm64/kernel/pi/patch-scs.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/kernel/pi/patch-scs.c b/arch/arm64/kernel/pi/patch-scs.c index bbe7d30ed12b..dac568e4a54f 100644 --- a/arch/arm64/kernel/pi/patch-scs.c +++ b/arch/arm64/kernel/pi/patch-scs.c @@ -192,6 +192,14 @@ static int scs_handle_fde_frame(const struct eh_frame *frame, size -= 2; break; + case DW_CFA_advance_loc4: + loc += *opcode++ * code_alignment_factor; + loc += (*opcode++ << 8) * code_alignment_factor; + loc += (*opcode++ << 16) * code_alignment_factor; + loc += (*opcode++ << 24) * code_alignment_factor; + size -= 4; + break; + case DW_CFA_def_cfa: case DW_CFA_offset_extended: size = skip_xleb128(&opcode, size); |