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| author | zhuangfeiran@ict.ac.cn <zhuangfeiran@ict.ac.cn> | 2012-03-28 23:27:00 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-03-29 18:12:59 -0400 |
| commit | 1d24fb3684f347226747c6b11ea426b7b992694e (patch) | |
| tree | a55c7cdfcb751c20f5d89502d5f99127cd34acb9 /arch/x86 | |
| parent | 7d26bb103c4162003bfdf1d63aaa32b548ad0e9a (diff) | |
| download | linux-stable-1d24fb3684f347226747c6b11ea426b7b992694e.tar.gz linux-stable-1d24fb3684f347226747c6b11ea426b7b992694e.tar.bz2 linux-stable-1d24fb3684f347226747c6b11ea426b7b992694e.zip | |
x86 bpf_jit: fix a bug in emitting the 16-bit immediate operand of AND
When K >= 0xFFFF0000, AND needs the two least significant bytes of K as
its operand, but EMIT2() gives it the least significant byte of K and
0x2. EMIT() should be used here to replace EMIT2().
Signed-off-by: Feiran Zhuang <zhuangfeiran@ict.ac.cn>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/net/bpf_jit_comp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index 5671752f8d9c..5a5b6e4dd738 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -289,7 +289,7 @@ void bpf_jit_compile(struct sk_filter *fp) EMIT2(0x24, K & 0xFF); /* and imm8,%al */ } else if (K >= 0xFFFF0000) { EMIT2(0x66, 0x25); /* and imm16,%ax */ - EMIT2(K, 2); + EMIT(K, 2); } else { EMIT1_off32(0x25, K); /* and imm32,%eax */ } |