In addition to preempt_disable patch for socket filters https://patchwork.ozlabs.org/patch/1032437/ the first three patches fix various lockdep false positives. Last patch fixes potential deadlock in stackmap access from tracing bpf prog and from syscall.
Alexei Starovoitov (3): bpf: fix lockdep false positive in percpu_freelist bpf: fix lockdep false positive in stackmap bpf: fix lockdep false positive in bpf_prog_register Martin KaFai Lau (1): bpf: Fix syscall's stackmap lookup potential deadlock kernel/bpf/hashtab.c | 4 ++-- kernel/bpf/percpu_freelist.c | 41 +++++++++++++++++++++++++----------- kernel/bpf/percpu_freelist.h | 4 ++++ kernel/bpf/stackmap.c | 2 +- kernel/bpf/syscall.c | 12 +++++++++-- kernel/trace/bpf_trace.c | 14 ++---------- 6 files changed, 48 insertions(+), 29 deletions(-) -- 2.20.0
