Merge tag 'seccomp-v5.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull seccomp selftest fix from Kees Cook:

 - Avoid using stdin for read syscall testing (Jann Horn)

* tag 'seccomp-v5.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  selftests/seccomp: Don't call read() on TTY from background pgrp

Author: torvalds

tools/testing/selftests/seccomp/seccomp_bpf.c

@@ -955,7 +955,7 @@ TEST(ERRNO_valid)
 	ASSERT_EQ(0, ret);
 
 	EXPECT_EQ(parent, syscall(__NR_getppid));
-	EXPECT_EQ(-1, read(0, NULL, 0));
+	EXPECT_EQ(-1, read(-1, NULL, 0));
 	EXPECT_EQ(E2BIG, errno);
 }
 
@@ -974,7 +974,7 @@ TEST(ERRNO_zero)
 
 	EXPECT_EQ(parent, syscall(__NR_getppid));
 	/* "errno" of 0 is ok. */
-	EXPECT_EQ(0, read(0, NULL, 0));
+	EXPECT_EQ(0, read(-1, NULL, 0));
 }
 
 /*
@@ -995,7 +995,7 @@ TEST(ERRNO_capped)
 	ASSERT_EQ(0, ret);
 
 	EXPECT_EQ(parent, syscall(__NR_getppid));
-	EXPECT_EQ(-1, read(0, NULL, 0));
+	EXPECT_EQ(-1, read(-1, NULL, 0));
 	EXPECT_EQ(4095, errno);
 }
 
@@ -1026,7 +1026,7 @@ TEST(ERRNO_order)
 	ASSERT_EQ(0, ret);
 
 	EXPECT_EQ(parent, syscall(__NR_getppid));
-	EXPECT_EQ(-1, read(0, NULL, 0));
+	EXPECT_EQ(-1, read(-1, NULL, 0));
 	EXPECT_EQ(12, errno);
 }
 
@@ -2623,7 +2623,7 @@ void *tsync_sibling(void *data)
 	ret = prctl(PR_GET_NO_NEW_PRIVS, 0, 0, 0, 0);
 	if (!ret)
 		return (void *)SIBLING_EXIT_NEWPRIVS;
-	read(0, NULL, 0);
+	read(-1, NULL, 0);
 	return (void *)SIBLING_EXIT_UNKILLED;
 }