path: root/drivers/net/ethernet/netronome
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authorNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>2019-08-22 00:53:58 +0530
committerDaniel Borkmann <daniel@iogearbox.net>2019-08-26 23:05:01 +0200
commitede7c460b1da5be7b8ef4efe47f1687babf06408 (patch)
treee5263710f10a78a6a58716b01eda99dfae0c561a /drivers/net/ethernet/netronome
parentnfp: bpf: fix latency bug when updating stack index register (diff)
bpf: handle 32-bit zext during constant blinding
Since BPF constant blinding is performed after the verifier pass, the ALU32 instructions inserted for doubleword immediate loads don't have a corresponding zext instruction. This is causing a kernel oops on powerpc and can be reproduced by running 'test_cgroup_storage' with bpf_jit_harden=2. Fix this by emitting BPF_ZEXT during constant blinding if prog->aux->verifier_zext is set. Fixes: a4b1d3c1ddf6cb ("bpf: verifier: insert zero extension according to analysis result") Reported-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Reviewed-by: Jiong Wang <jiong.wang@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'drivers/net/ethernet/netronome')
0 files changed, 0 insertions, 0 deletions