signal: check sig before setting info in kill_pid_usb_asyncio
[ Upstream commit eaec2b0bd3
]
In kill_pid_usb_asyncio, if signal is not valid, we do not need to
set info struct.
Signed-off-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Link: https://lore.kernel.org/r/f525fd08-1cf7-fb09-d20c-4359145eb940@huawei.com
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
parent
f88761412b
commit
16976275b9
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@ -1510,15 +1510,15 @@ int kill_pid_usb_asyncio(int sig, int errno, sigval_t addr,
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unsigned long flags;
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unsigned long flags;
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int ret = -EINVAL;
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int ret = -EINVAL;
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if (!valid_signal(sig))
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return ret;
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clear_siginfo(&info);
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clear_siginfo(&info);
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info.si_signo = sig;
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info.si_signo = sig;
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info.si_errno = errno;
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info.si_errno = errno;
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info.si_code = SI_ASYNCIO;
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info.si_code = SI_ASYNCIO;
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*((sigval_t *)&info.si_pid) = addr;
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*((sigval_t *)&info.si_pid) = addr;
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if (!valid_signal(sig))
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return ret;
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rcu_read_lock();
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rcu_read_lock();
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p = pid_task(pid, PIDTYPE_PID);
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p = pid_task(pid, PIDTYPE_PID);
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if (!p) {
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if (!p) {
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