| Message ID | 40f4b91c5200771f223966f368095c63.squirrel@webmail.greenhost.nl |
|---|---|
| State | Not Applicable, archived |
| Delegated to: | David Miller |
| Headers | show |
On Sat, 2012-03-31 at 20:52 +1100, Indan Zupancic wrote: > Hello, > > Finally, after much searching I found one little bug. > > [PATCH] net: bpf_jit: fix BPF_S_ALU_AND_K compilation > > Small typo resulted in bad code generation for certain > values of K for the BPF_S_ALU_AND_K instruction. > > Signed-off-by: Indan Zupancic <indan@nul.nu> > --- > > diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c > index 7c1b765..28bc807 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 */ > } > > Thanks but it was already fixed. commit 1d24fb3684f347226747c6b11ea426b7b992694e Author: zhuangfeiran@ict.ac.cn <zhuangfeiran@ict.ac.cn> Date: Wed Mar 28 23:27:00 2012 +0000 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> -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Sat, Mar 31, 2012 at 08:52:09PM +1100, Indan Zupancic wrote: > Hello, > > Finally, after much searching I found one little bug. > > [PATCH] net: bpf_jit: fix BPF_S_ALU_AND_K compilation > > Small typo resulted in bad code generation for certain > values of K for the BPF_S_ALU_AND_K instruction. > > Signed-off-by: Indan Zupancic <indan@nul.nu> > --- > <formletter> This is not the correct way to submit patches for inclusion in the stable kernel tree. Please read Documentation/stable_kernel_rules.txt for how to do this properly. </formletter> -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Sun, April 1, 2012 01:13, Greg KH wrote: > <formletter> > > This is not the correct way to submit patches for inclusion in the > stable kernel tree. Please read Documentation/stable_kernel_rules.txt > for how to do this properly. > > </formletter> Thanks for pointing that out. It won't happen again. Greetings, Indan -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index 7c1b765..28bc807 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 */ }
Hello, Finally, after much searching I found one little bug. [PATCH] net: bpf_jit: fix BPF_S_ALU_AND_K compilation Small typo resulted in bad code generation for certain values of K for the BPF_S_ALU_AND_K instruction. Signed-off-by: Indan Zupancic <indan@nul.nu> --- -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html