Displaying 4 results from an estimated 4 matches for "_raw_spin_lock_bh".
2015 Apr 30
0
[PATCH 5/6] x86: switch config from UNINLINE_SPIN_UNLOCK to INLINE_SPIN_UNLOCK
...the latency of the kernel by making
all kernel code (that is not executing in a critical section)
diff --git a/kernel/locking/spinlock.c b/kernel/locking/spinlock.c
index db3ccb1..0e2b531 100644
--- a/kernel/locking/spinlock.c
+++ b/kernel/locking/spinlock.c
@@ -177,7 +177,7 @@ void __lockfunc _raw_spin_lock_bh(raw_spinlock_t *lock)
EXPORT_SYMBOL(_raw_spin_lock_bh);
#endif
-#ifdef CONFIG_UNINLINE_SPIN_UNLOCK
+#ifndef CONFIG_INLINE_SPIN_UNLOCK
void __lockfunc _raw_spin_unlock(raw_spinlock_t *lock)
{
__raw_spin_unlock(lock);
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 1767057..0b4cc3c 1...
2018 Jul 31
1
KASAN: use-after-free Read in vhost_transport_send_pkt
.../report.c:354 [inline]
> kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
> __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:432
> debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
> do_raw_spin_lock+0x1c0/0x200 kernel/locking/spinlock_debug.c:112
> __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
> _raw_spin_lock_bh+0x39/0x40 kernel/locking/spinlock.c:168
> spin_lock_bh include/linux/spinlock.h:315 [inline]
> vhost_transport_send_pkt+0x12e/0x380 drivers/vhost/vsock.c:223
Thanks for the vsock fuzzing. This is a useful bug report.
I...
2015 Apr 30
12
[PATCH 0/6] x86: reduce paravirtualized spinlock overhead
Paravirtualized spinlocks produce some overhead even if the kernel is
running on bare metal. The main reason are the more complex locking
and unlocking functions. Especially unlocking is no longer just one
instruction but so complex that it is no longer inlined.
This patch series addresses this issue by adding two more pvops
functions to reduce the size of the inlined spinlock functions. When
2015 Apr 30
12
[PATCH 0/6] x86: reduce paravirtualized spinlock overhead
Paravirtualized spinlocks produce some overhead even if the kernel is
running on bare metal. The main reason are the more complex locking
and unlocking functions. Especially unlocking is no longer just one
instruction but so complex that it is no longer inlined.
This patch series addresses this issue by adding two more pvops
functions to reduce the size of the inlined spinlock functions. When