Messages in this thread | | | Date | Tue, 10 Dec 2019 12:54:57 -0800 | From | Jakub Kicinski <> | Subject | Re: [PATCH bpf v2] bpftool: Don't crash on missing jited insns or ksyms |
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On Tue, 10 Dec 2019 19:14:12 +0100, Toke Høiland-Jørgensen wrote: > 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. > > Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Fixes: 71bb428fe2c1 ("tools: bpf: add bpftool")
and
Fixes: f84192ee00b7 ("tools: bpftool: resolve calls without using imm field")
?
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