Re: [PATCH net] ebpf: fix fd refcount leaks related to maps in bpf syscall

From: Daniel Borkmann Date: Tue, 8 Sep 2015 18:00:09 +0200 > We may already have gotten a proper fd struct through fdget(), so > whenever we return at the end of an map operation, we need to call > fdput(). However, each map operation from syscall side first probes > CHECK_ATTR() to verify that

[PATCH net] ebpf: fix fd refcount leaks related to maps in bpf syscall

We may already have gotten a proper fd struct through fdget(), so whenever we return at the end of an map operation, we need to call fdput(). However, each map operation from syscall side first probes CHECK_ATTR() to verify that unused fields in the bpf_attr union are zero. In case of malformed in