armbian/linux-rockchip
0
0
Fork 0
mirror of https://github.com/armbian/linux-rockchip.git synced 2026-01-06 11:08:10 -08:00
Code Issues Packages Projects Releases Wiki Activity

parisc: Fix mask used to select futex spinlock

Browse Source 
commit d3a5a68cff upstream.

The address bits used to select the futex spinlock need to match those used in
the LWS code in syscall.S. The mask 0x3f8 only selects 7 bits.  It should
select 8 bits.

This change fixes the glibc nptl/tst-cond24 and nptl/tst-cond25 tests.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Fixes: 53a42b6324 ("parisc: Switch to more fine grained lws locks")
Cc: stable@vger.kernel.org # 5.10+
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
John David Anglin
2021-12-21 13:33:16 -05:00
committed by Greg Kroah-Hartman
parent 5deeb9ad59
commit 0ffb9f83e4
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/parisc/include/asm/futex.h
View File

@@ -16,7 +16,7 @@ static inline void
_futex_spin_lock_irqsave(u32 __user *uaddr, unsigned long int *flags)
{
extern u32 lws_lock_start[];
long index = ((long)uaddr & 0x3f8) >> 1;
long index = ((long)uaddr & 0x7f8) >> 1;
arch_spinlock_t *s = (arch_spinlock_t *)&lws_lock_start[index];
local_irq_save(*flags);
arch_spin_lock(s);
@@ -26,7 +26,7 @@ static inline void
_futex_spin_unlock_irqrestore(u32 __user *uaddr, unsigned long int *flags)
{
extern u32 lws_lock_start[];
long index = ((long)uaddr & 0x3f8) >> 1;
long index = ((long)uaddr & 0x7f8) >> 1;
arch_spinlock_t *s = (arch_spinlock_t *)&lws_lock_start[index];
arch_spin_unlock(s);
local_irq_restore(*flags);