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a4f9e1da5b
getauxval() from glibc-compatibility did not work always correctly:
- It does not work after setenv(), and this breaks vsyscalls,
like sched_getcpu() [1] (and BaseDaemon.cpp always set TZ if timezone
is defined, which is true for CI [2]).
Also note, that fixing setenv() will not fix LSan,
since the culprit is getauxval()
[1]: https://bugzilla.redhat.com/show_bug.cgi?id=1163404
[2]: ClickHouse#32928 (comment)
- Another think that is definitely broken is LSan (Leak Sanitizer), it
relies on worked getauxval() but it does not work if __environ is not
initialized yet (there is even a commit about this).
And because of, at least, one leak had been introduced [3]:
[3]: ClickHouse#33840
Fix this by using /proc/self/auxv with fallback to environ solution to
make it compatible with environment that does not allow reading from
auxv (or no procfs).
v2: add fallback to environ solution
v3: fix return value for __auxv_init_procfs()
(cherry picked from commit
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|---|---|---|
| .. | ||
| aarch64 | ||
| x86_64 | ||
| __math_divzero.c | ||
| __math_divzerof.c | ||
| __math_invalid.c | ||
| __math_invalidf.c | ||
| __math_oflow.c | ||
| __math_oflowf.c | ||
| __math_uflow.c | ||
| __math_uflowf.c | ||
| __math_xflow.c | ||
| __math_xflowf.c | ||
| __polevll.c | ||
| accept4.c | ||
| atomic.h | ||
| clock_getres.c | ||
| clock_gettime.c | ||
| clock_nanosleep.c | ||
| COPYRIGHT | ||
| epoll.c | ||
| eventfd.c | ||
| exp2.c | ||
| exp2f_data.c | ||
| exp2f_data.h | ||
| exp2f.c | ||
| exp_data.c | ||
| exp_data.h | ||
| exp.c | ||
| fallocate.c | ||
| fcntl.c | ||
| futimens.c | ||
| getauxval.c | ||
| getentropy.c | ||
| getrandom.c | ||
| glob.c | ||
| lgamma.c | ||
| lgammal.c | ||
| libm.h | ||
| log2_data.c | ||
| log2_data.h | ||
| log2.c | ||
| log2f_data.c | ||
| log2f_data.h | ||
| log2f.c | ||
| log_data.c | ||
| log_data.h | ||
| log.c | ||
| logf_data.c | ||
| logf_data.h | ||
| logf.c | ||
| mkstemps.c | ||
| musl_features.h | ||
| pipe2.c | ||
| posix_spawn.c | ||
| pow_data.c | ||
| pow_data.h | ||
| pow.c | ||
| powf_data.c | ||
| powf_data.h | ||
| powf.c | ||
| powl.c | ||
| pwritev.c | ||
| README | ||
| sched_cpucount.c | ||
| sched_getcpu.c | ||
| secure_getenv.c | ||
| strsignal.c | ||
| sync_file_range.c | ||
| syscall_ret.c | ||
| syscall.h | ||
| timerfd.c | ||
| timespec_get.c | ||
| utimensat.c | ||
| vasprintf.c | ||
| vdso.c | ||
Tiny pieces extracted from MUSL library. git://git.musl-libc.org/musl c10bc61508dc52b8315084e628f36a6c3c2dabb1 NOTE: Files was edited. NOTE: Math related files are pulled from commit 6ad514e4e278f0c3b18eb2db1d45638c9af1c07f.