diff options
| author | Alexei Starovoitov <[email protected]> | 2019-10-30 16:30:19 -0700 |
|---|---|---|
| committer | Daniel Borkmann <[email protected]> | 2019-10-31 02:02:29 +0100 |
| commit | af91acbc62999d62e2ca1e80f660d20561ca55d3 (patch) | |
| tree | 177a248942995dad60bd216381da2be430e17b4d /kernel/bpf/syscall.c | |
| parent | cf204a718357c3c28557cc6bdc77a3adc33d0741 (diff) | |
bpf: Fix bpf jit kallsym access
Jiri reported crash when JIT is on, but net.core.bpf_jit_kallsyms is off.
bpf_prog_kallsyms_find() was skipping addr->bpf_prog resolution
logic in oops and stack traces. That's incorrect.
It should only skip addr->name resolution for 'cat /proc/kallsyms'.
That's what bpf_jit_kallsyms and bpf_jit_harden protect.
Fixes: 3dec541b2e63 ("bpf: Add support for BTF pointers to x86 JIT")
Reported-by: Jiri Olsa <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Diffstat (limited to 'kernel/bpf/syscall.c')
0 files changed, 0 insertions, 0 deletions