| Message ID | 1396270643-10623-1-git-send-email-luis.henriques@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/arch/x86/net/bpf_jit.S b/arch/x86/net/bpf_jit.S index 877b9a1..0149575 100644 --- a/arch/x86/net/bpf_jit.S +++ b/arch/x86/net/bpf_jit.S @@ -140,7 +140,7 @@ bpf_slow_path_byte_msh: push %r9; \ push SKBDATA; \ /* rsi already has offset */ \ - mov $SIZE,%ecx; /* size */ \ + mov $SIZE,%edx; /* size */ \ call bpf_internal_load_pointer_neg_helper; \ test %rax,%rax; \ pop SKBDATA; \
This is a note to let you know that I have just added a patch titled x86: bpf_jit: support negative offsets to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.5.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From a436251f1c272429fcb4aaca466eacc6305f3789 Mon Sep 17 00:00:00 2001 From: Alexei Starovoitov <ast@plumgrid.com> Date: Mon, 10 Mar 2014 15:56:51 -0700 Subject: x86: bpf_jit: support negative offsets commit fdfaf64e75397567257e1051931f9a3377360665 upstream. Commit a998d4342337 claimed to introduce negative offset support to x86 jit, but it couldn't be working, since at the time of the execution of LD+ABS or LD+IND instructions via call into bpf_internal_load_pointer_neg_helper() the %edx (3rd argument of this func) had junk value instead of access size in bytes (1 or 2 or 4). Store size into %edx instead of %ecx (what original commit intended to do) Fixes: a998d4342337 ("bpf jit: Let the x86 jit handle negative offsets") Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Cc: Jan Seiffert <kaffeemonster@googlemail.com> Cc: Eric Dumazet <edumazet@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- arch/x86/net/bpf_jit.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 1.9.1