diff options
| author | Ingo Molnar <mingo@kernel.org> | 2025-03-21 10:38:43 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-25 11:45:11 +0300 |
| commit | 1e5b04f08e52d1c39deca67953e39e4569bb96bb (patch) | |
| tree | 4ff3eaa5ef97785491822c92adc3394961908e99 /lib/zstd | |
| parent | af71db7de0679e91f2e9e82868df8e7a2fe695b2 (diff) | |
| download | linux-1e5b04f08e52d1c39deca67953e39e4569bb96bb.tar.xz | |
zstd: Increase DYNAMIC_BMI2 GCC version cutoff from 4.8 to 11.0 to work around compiler segfault
[ Upstream commit 1400c87e6cac47eb243f260352c854474d9a9073 ]
Due to pending percpu improvements in -next, GCC9 and GCC10 are
crashing during the build with:
lib/zstd/compress/huf_compress.c:1033:1: internal compiler error: Segmentation fault
1033 | {
| ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-9/README.Bugs> for instructions.
The DYNAMIC_BMI2 feature is a known-challenging feature of
the ZSTD library, with an existing GCC quirk turning it off
for GCC versions below 4.8.
Increase the DYNAMIC_BMI2 version cutoff to GCC 11.0 - GCC 10.5
is the last version known to crash.
Reported-by: Michael Kelley <mhklinux@outlook.com>
Debugged-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: https://lore.kernel.org/r/SN6PR02MB415723FBCD79365E8D72CA5FD4D82@SN6PR02MB4157.namprd02.prod.outlook.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'lib/zstd')
| -rw-r--r-- | lib/zstd/common/portability_macros.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/zstd/common/portability_macros.h b/lib/zstd/common/portability_macros.h index 0e3b2c0a527d..0dde8bf56595 100644 --- a/lib/zstd/common/portability_macros.h +++ b/lib/zstd/common/portability_macros.h @@ -55,7 +55,7 @@ #ifndef DYNAMIC_BMI2 #if ((defined(__clang__) && __has_attribute(__target__)) \ || (defined(__GNUC__) \ - && (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))) \ + && (__GNUC__ >= 11))) \ && (defined(__x86_64__) || defined(_M_X64)) \ && !defined(__BMI2__) # define DYNAMIC_BMI2 1 |