diff options
| author | Pepper Gray <hello@peppergray.xyz> | 2026-03-10 14:44:28 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-04-11 14:29:20 +0200 |
| commit | 02a788c94fb0652b674e871955a4a811f369f1ed (patch) | |
| tree | a437db781dc1d33068faf8ea89d69ee95d585bd6 /arch/arm64 | |
| parent | e5a3e3cdd9b3015ae79456c81beebfdbb5246c0f (diff) | |
arm64/scs: Fix handling of advance_loc4
[ Upstream commit d499e9627d70b1269020d59b95ed3e18bee6b8cd ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/arm64')
| -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); |