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seccomp fix for v5.18-rc6

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- Avoid using stdin for read syscall testing (Jann Horn)
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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
This commit is contained in:
Linus Torvalds 2022-05-03 15:47:19 -07:00
commit 107c948d1d
1 changed files with 5 additions and 5 deletions
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10
tools/testing/selftests/seccomp/seccomp_bpf.c
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@ -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;
}