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x86/sgx: Return -ERESTARTSYS in sgx_ioc_enclave_add_pages()

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Return -ERESTARTSYS instead of -EINTR in sgx_ioc_enclave_add_pages()
when interrupted before any pages have been processed. At this point
ioctl can be obviously safely restarted.

Reported-by: Haitao Huang <haitao.huang@intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20201118213932.63341-1-jarkko@kernel.org
This commit is contained in:
Jarkko Sakkinen 2020-11-18 23:39:32 +02:00 committed by Borislav Petkov
parent 0eaa8d153a
commit 14132a5b80
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/cpu/sgx/ioctl.c
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@ -444,7 +444,7 @@ static long sgx_ioc_enclave_add_pages(struct sgx_encl *encl, void __user *arg)
for (c = 0 ; c < add_arg.length; c += PAGE_SIZE) {
if (signal_pending(current)) {
if (!c)
ret = -EINTR;
ret = -ERESTARTSYS;
break;
}