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RISC-V: don't assume PI mutexes and robust futexes before 4.20 (bug 23864) 

Support for futex_cmpxchg as only been added to 4.20-rc1.

(cherry picked from commit 295132ff05)
This commit is contained in:
Andreas Schwab 2018-11-06 09:23:02 +01:00 committed by Aurelien Jarno
parent e5366c12d0
commit 4bf5ab3196
3 changed files with 13 additions and 0 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2018-11-07 Andreas Schwab <schwab@suse.de>
[BZ #23864]
* sysdeps/unix/sysv/linux/riscv/kernel-features.h
(__ASSUME_SET_ROBUST_LIST) [__LINUX_KERNEL_VERSION < 0x041400]:
Undef.
2018-09-21 Adhemerval Zanella <adhemerval.zanella@linaro.org>
* NEWS: Add note about new TLE support on powerpc64le.

1
NEWS
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@ -39,6 +39,7 @@ The following bugs are resolved with this release:
[23717] Fix stack overflow in stdlib/tst-setcontext9
[23821] si_band in siginfo_t has wrong type long int on sparc64
[23822] ia64 static libm.a is missing exp2f, log2f and powf symbols
[23864] libc: [riscv] missing kernel-features.h undefines
[23844] pthread_rwlock_trywrlock results in hang
[23927] Linux if_nametoindex() does not close descriptor (CVE-2018-19591)
[23972] __old_getdents64 uses wrong d_off value on overflow

5
sysdeps/unix/sysv/linux/riscv/kernel-features.h
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@ -21,3 +21,8 @@
#undef __ASSUME_CLONE_DEFAULT
#define __ASSUME_CLONE_BACKWARDS 1
/* No support for PI mutexes or robust futexes before 4.20. */
#if __LINUX_KERNEL_VERSION < 0x041400
# undef __ASSUME_SET_ROBUST_LIST
#endif