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
serial.h
/*
* include/linux/serial.h
*
* Copyright (C) 1992 by Theodore Ts'o.
*
* Redistribution of this file is permitted under the terms of the GNU
* Public License (GPL)
*/
#ifndef _LINUX_SERIAL_H
#define _LINUX_SERIAL_H
#include <uapi/linux/serial.h>
#include <uapi/linux/serial_reg.h>
/* Helper for dealing with UART_LCR_WLEN* defines */
#define UART_LCR_WLEN(x) ((x) - 5)
/* FIFO and shifting register empty */
#define UART_LSR_BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
static inline bool uart_lsr_tx_empty(u16 lsr)
{
return (lsr & UART_LSR_BOTH_EMPTY) == UART_LSR_BOTH_EMPTY;
}
/*
* Counters of the input lines (CTS, DSR, RI, CD) interrupts
*/
struct async_icount {
__u32 cts, dsr, rng, dcd, tx, rx;
__u32 frame, parity, overrun, brk;
__u32 buf_overrun;
};
#include <linux/compiler.h>
#endif /* _LINUX_SERIAL_H */
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