Toke Høiland-Jørgensen 5b79bcdf03 bpftool: Don't crash on missing jited insns or ksyms ... When the kptr_restrict sysctl is set, the kernel can fail to return jited_ksyms or jited_prog_insns, but still have positive values in nr_jited_ksyms and jited_prog_len. This causes bpftool to crash when trying to dump the program because it only checks the len fields not the actual pointers to the instructions and ksyms. Fix this by adding the missing checks. Fixes: 71bb428fe2 ("tools: bpf: add bpftool") Fixes: f84192ee00 ("tools: bpftool: resolve calls without using imm field") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20191210181412.151226-1-toke@redhat.com		2019-12-11 13:57:26 +01:00
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bpftool
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bpf_asm.c
bpf_dbg.c
bpf_exp.l
bpf_exp.y
bpf_jit_disasm.c
Makefile
Makefile.helpers