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(parent: 4549c3e) | patch
powerpc/bpf: Validate branch ranges
authorNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Tue, 5 Oct 2021 20:25:21 +0000 (01:55 +0530)
committerMichael Ellerman <mpe@ellerman.id.au>
Thu, 7 Oct 2021 07:52:33 +0000 (18:52 +1100)
commit3832ba4e283d7052b783dab8311df7e3590fed93
tree7f887f980f7cebd58046d3213ac0fded3f38526btree | snapshot
parent4549c3ea3160fa8b3f37dfe2f957657bb265eda9commit | diff
powerpc/bpf: Validate branch ranges

Add checks to ensure that we never emit branch instructions with
truncated branch offsets.

Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Tested-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/71d33a6b7603ec1013c9734dd8bdd4ff5e929142.1633464148.git.naveen.n.rao@linux.vnet.ibm.com
arch/powerpc/net/bpf_jit.h diff | blob | history
arch/powerpc/net/bpf_jit_comp.c diff | blob | history
arch/powerpc/net/bpf_jit_comp32.c diff | blob | history
arch/powerpc/net/bpf_jit_comp64.c diff | blob | history
Domain: System / Kernel;