Revision 64b4c411a6c7a5f27555bfc2d6310b87bde3db67 authored by Andrew Morton on 21 October 2022, 04:19:22 UTC, committed by Andrew Morton on 28 October 2022, 20:37:22 UTC
These percpu counters are referenced in free_ipcs->freeque, so destroy them later. Fixes: 72d1e611082e ("ipc/msg: mitigate the lock contention with percpu counter") Reported-by: syzbot+96e659d35b9d6b541152@syzkaller.appspotmail.com Tested-by: Mark Rutland <mark.rutland@arm.com> Cc: Jiebin Sun <jiebin.sun@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
1 parent 27d676a
mmu_context.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_MMU_CONTEXT_H
#define _LINUX_MMU_CONTEXT_H
#include <asm/mmu_context.h>
#include <asm/mmu.h>
/* Architectures that care about IRQ state in switch_mm can override this. */
#ifndef switch_mm_irqs_off
# define switch_mm_irqs_off switch_mm
#endif
#ifndef leave_mm
static inline void leave_mm(int cpu) { }
#endif
/*
* CPUs that are capable of running user task @p. Must contain at least one
* active CPU. It is assumed that the kernel can run on all CPUs, so calling
* this for a kernel thread is pointless.
*
* By default, we assume a sane, homogeneous system.
*/
#ifndef task_cpu_possible_mask
# define task_cpu_possible_mask(p) cpu_possible_mask
# define task_cpu_possible(cpu, p) true
#else
# define task_cpu_possible(cpu, p) cpumask_test_cpu((cpu), task_cpu_possible_mask(p))
#endif
#endif
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