path: root/WHATSNEW
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authorRich Felker <>2020-01-15 16:15:49 -0500
committerRich Felker <>2020-01-15 16:15:49 -0500
commit0ff18be20833928064f6eff88e590cea9625f602 (patch)
treeb5b93ec970b117a72b053961c604dbbfa9cf20a7 /WHATSNEW
parent2507e7f5312e79620f6337935d0a6c9045ccba09 (diff)
fix incorrect __hwcap seen in dynamic-linked __set_thread_area
the bug fixed in commit b82cd6c78d812d38c31febba5a9e57dbaa7919c4 was mostly masked on arm because __hwcap was zero at the point of the call from the dynamic linker to __set_thread_area, causing the access to libc.auxv to be skipped and kuser_helper versions of TLS access and atomics to be used instead of the armv6 or v7 versions. however, on kernels with kuser_helper removed for hardening it would crash. since __set_thread_area potentially uses __hwcap, it must be initialized before the function is called. move the AT_HWCAP lookup from stage 3 to stage 2b.
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