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Amir Goldstein
aa96e42b8d
Commit 4d0c5ba (vfs: do get_write_access() on upper layer of overlayfs) that was merged for kernel v4.8 changes the behavior of execve+truncate in a subtle way. When file is executed from lower and then truncated, the truncation is allowed, becasue it only affects the size of the copied up file and does not affect the VM mapping of the executed lower file. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Reviewed-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
3 lines
65 B
Plaintext
3 lines
65 B
Plaintext
QA output created by 013
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truncate(test_lower) should have failed
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