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Jiri Olsa
d5dc200c3a
As reported by sashiko we use __get_user without prior access_ok call on the
user space pointer. Adding the missing call for the whole pointer array.
Plus removing the err check in the error path, because it's not needed and
also we can return -ENOMEM directly from the first kvmalloc_array fail path.
Cc: [email protected]
[1] https://lore.kernel.org/bpf/[email protected]/
Fixes: 0236fec57a ("bpf: Resolve symbols with ftrace_lookup_symbols for kprobe multi link")
Reported-by: Sashiko <[email protected]>
Closes: https://lore.kernel.org/bpf/[email protected]/
Signed-off-by: Jiri Olsa <[email protected]>
Reviewed-by: Emil Tsalapatis <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>