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authorNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>2021-10-06 01:55:27 +0530
committerMichael Ellerman <mpe@ellerman.id.au>2021-10-07 19:52:58 +1100
commite8278d44443207bb6609c7b064073f353e6f4978 (patch)
tree713e6f43b5d3190d816ef8a3fef703db94f1b141 /arch
parentc9b8da77f22d28348d1f89a6c4d3fec102e9b1c4 (diff)
powerpc/bpf ppc32: Fix JMP32_JSET_K
'andi' only takes an unsigned 16-bit value. Correct the imm range used when emitting andi. Fixes: 51c66ad849a703 ("powerpc/bpf: Implement extended BPF on PPC32") Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/b94489f52831305ec15aca4dd04a3527236be7e8.1633464148.git.naveen.n.rao@linux.vnet.ibm.com
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/net/bpf_jit_comp32.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/net/bpf_jit_comp32.c b/arch/powerpc/net/bpf_jit_comp32.c
index 519ecb9ab672..7c65de9ed4fa 100644
--- a/arch/powerpc/net/bpf_jit_comp32.c
+++ b/arch/powerpc/net/bpf_jit_comp32.c
@@ -1075,7 +1075,7 @@ cond_branch:
break;
case BPF_JMP32 | BPF_JSET | BPF_K:
/* andi does not sign-extend the immediate */
- if (imm >= -32768 && imm < 32768) {
+ if (imm >= 0 && imm < 32768) {
/* PPC_ANDI is _only/always_ dot-form */
EMIT(PPC_RAW_ANDI(_R0, dst_reg, imm));
} else {