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net: bpf_jit: fix an off-one bug in x86_64 cond jump target
authorMarkus Kötter <nepenthesdev@gmail.com>
Sat, 17 Dec 2011 11:39:08 +0000 (11:39 +0000)
committerDavid S. Miller <davem@davemloft.net>
Mon, 19 Dec 2011 20:47:29 +0000 (15:47 -0500)
commita03ffcf873fe0f2565386ca8ef832144c42e67fa
treefd83a7eefe03946bba72c5a087d6c9aabb7aadb8tree | snapshot
parentd1388dacbbb1d1b2bc208a4ba18de9316dc49ce9commit | diff
net: bpf_jit: fix an off-one bug in x86_64 cond jump target

x86 jump instruction size is 2 or 5 bytes (near/long jump), not 2 or 6
bytes.

In case a conditional jump is followed by a long jump, conditional jump
target is one byte past the start of target instruction.

Signed-off-by: Markus Kötter <nepenthesdev@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
arch/x86/net/bpf_jit_comp.c diff | blob | history
Domain: System / Kernel;