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futex.2: ERRORS: Add EINVAL case for FUTEX_UNLOCK_PI 

Reported-by: Thomas Gleixner <tglx@linutronix.de>

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2015-01-14 12:27:42 +01:00
parent ecae2099c5
commit ce022f1841
1 changed files with 6 additions and 3 deletions
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9
man2/futex.2
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@ -689,7 +689,6 @@ User space cannot handle this race free.
.TP
.BR FUTEX_UNLOCK_PI " (since Linux 2.6.18)"
.\" commit c87e2837be82df479a6bae9f155c43516d2feebc
.\" FIXME to complete
This operation wakes the top priority waiter which is waiting in
.B FUTEX_LOCK_PI
on the futex address provided by the
@ -869,11 +868,15 @@ is invalid.
.TP
.B EINVAL
.RB ( FUTEX_LOCK_PI ,
.BR FUTEX_TRYLOCK_PI )
.BR FUTEX_TRYLOCK_PI ,
.BR FUTEX_UNLOCK_PI )
The kernel detected an inconsistency between the user-space state at
.I uaddr
and the kernel state.
This indicates either state corruption or that the kernel found a waiter on
This indicates either state corruption
.\" FIXME tglx did not mention the "state corruption" for FUTEX_UNLOCK_PI.
.\" Does that case also apply for FUTEX_UNLOCK_PI?
or that the kernel found a waiter on
.I uaddr
which is waiting via
.BR FUTEX_WAIT