* pull-request: bpf 2018-01-18
@ 2018-01-18 1:16 Daniel Borkmann
2018-01-18 14:23 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Daniel Borkmann @ 2018-01-18 1:16 UTC (permalink / raw)
To: davem; +Cc: daniel, ast, netdev
Hi David,
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) Fix a divide by zero due to wrong if (src_reg == 0) check in
64-bit mode. Properly handle this in interpreter and mask it
also generically in verifier to guard against similar checks
in JITs, from Eric and Alexei.
2) Fix a bug in arm64 JIT when tail calls are involved and progs
have different stack sizes, from Daniel.
3) Reject stores into BPF context that are not expected BPF_STX |
BPF_MEM variant, from Daniel.
4) Mark dst reg as unknown on {s,u}bounds adjustments when the
src reg has derived bounds from dead branches, from Daniel.
Please consider pulling these changes from:
git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git
Thanks a lot!
----------------------------------------------------------------
The following changes since commit 8155aedf512edd3f88ef19f7cacf476ace7d1322:
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf (2018-01-14 11:01:33 -0500)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git
for you to fetch changes up to 6f16101e6a8b4324c36e58a29d9e0dbb287cdedb:
bpf: mark dst unknown on inconsistent {s, u}bounds adjustments (2018-01-17 16:23:17 -0800)
----------------------------------------------------------------
Alexei Starovoitov (1):
bpf: fix 32-bit divide by zero
Daniel Borkmann (3):
bpf, arm64: fix stack_depth tracking in combination with tail calls
bpf: reject stores into ctx via st and xadd
bpf: mark dst unknown on inconsistent {s, u}bounds adjustments
Eric Dumazet (1):
bpf: fix divides by zero
arch/arm64/net/bpf_jit_comp.c | 20 ++--
kernel/bpf/core.c | 4 +-
kernel/bpf/verifier.c | 64 ++++++++++--
net/core/filter.c | 4 +
tools/testing/selftests/bpf/test_verifier.c | 152 +++++++++++++++++++++++++++-
5 files changed, 219 insertions(+), 25 deletions(-)
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: pull-request: bpf 2018-01-18
2018-01-18 1:16 pull-request: bpf 2018-01-18 Daniel Borkmann
@ 2018-01-18 14:23 ` David Miller
0 siblings, 0 replies; 2+ messages in thread
From: David Miller @ 2018-01-18 14:23 UTC (permalink / raw)
To: daniel; +Cc: ast, netdev
From: Daniel Borkmann <daniel@iogearbox.net>
Date: Thu, 18 Jan 2018 02:16:03 +0100
> The following pull-request contains BPF updates for your *net* tree.
>
> The main changes are:
>
> 1) Fix a divide by zero due to wrong if (src_reg == 0) check in
> 64-bit mode. Properly handle this in interpreter and mask it
> also generically in verifier to guard against similar checks
> in JITs, from Eric and Alexei.
>
> 2) Fix a bug in arm64 JIT when tail calls are involved and progs
> have different stack sizes, from Daniel.
>
> 3) Reject stores into BPF context that are not expected BPF_STX |
> BPF_MEM variant, from Daniel.
>
> 4) Mark dst reg as unknown on {s,u}bounds adjustments when the
> src reg has derived bounds from dead branches, from Daniel.
>
> Please consider pulling these changes from:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git
Pulled, thanks Daniel.
^ permalink raw reply [flat|nested] 2+ messages in thread
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