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* [Bug nptl/28268] New: nptl: Handle robust PI mutexes for !__ASSUME_SET_ROBUST_LIST
@ 2021-08-26 12:02 adhemerval.zanella at linaro dot org
  0 siblings, 0 replies; only message in thread
From: adhemerval.zanella at linaro dot org @ 2021-08-26 12:02 UTC (permalink / raw)
  To: glibc-bugs

https://sourceware.org/bugzilla/show_bug.cgi?id=28268

            Bug ID: 28268
           Summary: nptl: Handle robust PI mutexes for
                    !__ASSUME_SET_ROBUST_LIST
           Product: glibc
           Version: 2.35
            Status: NEW
          Severity: normal
          Priority: P2
         Component: nptl
          Assignee: unassigned at sourceware dot org
          Reporter: adhemerval.zanella at linaro dot org
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

The robust PI mutexes are signaled by setting the LSB bit to 1, so the code
requires to take this consideration before access the __pthread_mutex_s. 
This a bug on only visible on a handful of architectures where 
__NR_set_robust_list is not support due the missing CONFIG_HAVE_FUTEX_CMPXCHG.

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2021-08-26 12:02 [Bug nptl/28268] New: nptl: Handle robust PI mutexes for !__ASSUME_SET_ROBUST_LIST adhemerval.zanella at linaro dot org

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