On 01/31/2019 03:12 AM, Alexei Starovoitov wrote: > v1->v2: > - reworded 2nd patch. It's a real dead lock. Not a false positive > - dropped the lockdep fix for up_read_non_owner in bpf_get_stackid > > In addition to preempt_disable patch for socket filters > https://patchwork.ozlabs.org/patch/1032437/ > First patch fixes lockdep false positive in percpu_freelist > Second patch fixes potential deadlock in bpf_prog_register > Third patch fixes another potential deadlock in stackmap access > from tracing bpf prog and from syscall. > > Alexei Starovoitov (2): > bpf: fix lockdep false positive in percpu_freelist > bpf: fix potential deadlock 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/syscall.c | 12 +++++++++-- > kernel/trace/bpf_trace.c | 14 ++---------- > 5 files changed, 47 insertions(+), 28 deletions(-) >
Applied, thanks!
