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| author | Carlos Santos <casantos@redhat.com> | 2019-10-17 09:37:13 -0300 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2020-01-21 14:18:12 -1000 |
| commit | 00b5032eaddb7193f03f0a28b10286244d2e2a7b (patch) | |
| tree | db60aa670ca04cdc384eef613d6a3d9d5ad1a416 /util/cacheinfo.c | |
| parent | 7b7d00e0a714e0bdcd4c8a76f0927e1c8f1b2121 (diff) | |
| download | qemu-00b5032eaddb7193f03f0a28b10286244d2e2a7b.zip qemu-00b5032eaddb7193f03f0a28b10286244d2e2a7b.tar.gz qemu-00b5032eaddb7193f03f0a28b10286244d2e2a7b.tar.bz2 | |
util/cacheinfo: fix crash when compiling with uClibc
uClibc defines _SC_LEVEL1_ICACHE_LINESIZE and _SC_LEVEL1_DCACHE_LINESIZE
but the corresponding sysconf calls returns -1, which is a valid result,
meaning that the limit is indeterminate.
Handle this situation using the fallback values instead of crashing due
to an assertion failure.
Signed-off-by: Carlos Santos <casantos@redhat.com>
Message-Id: <20191017123713.30192-1-casantos@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'util/cacheinfo.c')
| -rw-r--r-- | util/cacheinfo.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/util/cacheinfo.c b/util/cacheinfo.c index ea6f3e9..d94dc6a 100644 --- a/util/cacheinfo.c +++ b/util/cacheinfo.c @@ -93,10 +93,16 @@ static void sys_cache_info(int *isize, int *dsize) static void sys_cache_info(int *isize, int *dsize) { # ifdef _SC_LEVEL1_ICACHE_LINESIZE - *isize = sysconf(_SC_LEVEL1_ICACHE_LINESIZE); + int tmp_isize = (int) sysconf(_SC_LEVEL1_ICACHE_LINESIZE); + if (tmp_isize > 0) { + *isize = tmp_isize; + } # endif # ifdef _SC_LEVEL1_DCACHE_LINESIZE - *dsize = sysconf(_SC_LEVEL1_DCACHE_LINESIZE); + int tmp_dsize = (int) sysconf(_SC_LEVEL1_DCACHE_LINESIZE); + if (tmp_dsize > 0) { + *dsize = tmp_dsize; + } # endif } #endif /* sys_cache_info */ |