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| author | Ojaswin Mujoo <ojaswin@linux.ibm.com> | 2023-01-05 01:54:37 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-01-11 16:28:43 +1100 |
| commit | 3287ebd7fd01e853ca4da8be675322429400e2bd (patch) | |
| tree | 9c46735cbbbd724923ae065f99c117e471611974 /arch/powerpc | |
| parent | be5f95c8779e19779dd81927c8574fec5aaba36c (diff) | |
| download | linux-3287ebd7fd01e853ca4da8be675322429400e2bd.tar.bz2 | |
powerpc/boot: Fix incorrect version calculation issue in ld_version
The ld_version() function computes the wrong version value for certain
ld versions such as the following:
$ ld --version
GNU ld (GNU Binutils; SUSE Linux Enterprise 15)
2.37.20211103-150100.7.37
For input 2.37.20211103, the value computed is 202348030000 which is
higher than the value for a later version like 2.39.0, which is
23900000.
This issue was highlighted because with the above ld version, the
powerpc kernel build started failing with ld error: "unrecognized option
--no-warn-rwx-segments". This was caused due to the recent commit
579aee9fc594 ("powerpc: suppress some linker warnings in recent linker
versions") which added the --no-warn-rwx-segments linker flag if the ld
version is greater than 2.39.
Due to the bug in ld_version(), ld version 2.37.20111103 is wrongly
calculated to be greater than 2.39 and the unsupported flag is added.
To fix it, if version is of the form x.y.z and length(z) == 8, then most
probably it is a date [yyyymmdd] commonly used for release snapshots and
not an actual new version. Hence, ignore the date part replacing it with
0.
Fixes: 579aee9fc594 ("powerpc: suppress some linker warnings in recent linker versions")
Signed-off-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
[mpe: Tweak change log wording/formatting, add Fixes tag]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230104202437.90039-1-ojaswin@linux.ibm.com
Diffstat (limited to 'arch/powerpc')
| -rwxr-xr-x | arch/powerpc/boot/wrapper | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper index af04cea82b94..352d7de24018 100755 --- a/arch/powerpc/boot/wrapper +++ b/arch/powerpc/boot/wrapper @@ -210,6 +210,10 @@ ld_version() gsub(".*version ", ""); gsub("-.*", ""); split($1,a, "."); + if( length(a[3]) == "8" ) + # a[3] is probably a date of format yyyymmdd used for release snapshots. We + # can assume it to be zero as it does not signify a new version as such. + a[3] = 0; print a[1]*100000000 + a[2]*1000000 + a[3]*10000; exit }' |