netdev - [bpf PATCH v2 0/3] BPF, a couple sockmap fixes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20180423182726.17999.269.stgit@john-Precision-Tower-5810>
Date:   Mon, 23 Apr 2018 11:29:24 -0700
From:   John Fastabend <john.fastabend@...il.com>
To:     ast@...nel.org, daniel@...earbox.net
Cc:     netdev@...r.kernel.org
Subject: [bpf PATCH v2 0/3] BPF, a couple sockmap fixes

While testing sockmap with more programs (besides our test programs)
I found a couple issues.

The attached series fixes an issue where pinned maps were not
working correctly, blocking sockets returned zero, and an error
path that when the sock hit an out of memory case resulted in a
double page_put() while doing ingress redirects.

See individual patches for more details.

v2: Incorporated Daniel's feedback to use map ops for uref put op
    which also fixed the build error discovered in v1.

---

John Fastabend (3):
      bpf: sockmap, map_release does not hold refcnt for pinned maps
      bpf: sockmap, sk_wait_event needed to handle blocking cases
      bpf: sockmap, fix double page_put on ENOMEM error in redirect path


 include/linux/bpf.h   |    2 +-
 kernel/bpf/arraymap.c |    3 ++-
 kernel/bpf/sockmap.c  |   51 +++++++++++++++++++++++++++++++++++++++++++++----
 kernel/bpf/syscall.c  |    4 ++--
 4 files changed, 52 insertions(+), 8 deletions(-)

--
Signature