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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 
ipc/msg.c: fix percpu_counter use after free
 
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
Raw File
sw842.h 
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __SW842_H__
#define __SW842_H__

#define SW842_MEM_COMPRESS	(0xf000)

int sw842_compress(const u8 *src, unsigned int srclen,
		   u8 *dst, unsigned int *destlen, void *wmem);

int sw842_decompress(const u8 *src, unsigned int srclen,
		     u8 *dst, unsigned int *destlen);

#endif
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