From: Hou Tao <houtao1@xxxxxxxxxx>
Hi,
The tiny patch set fixes the out-of-bound read problem when reading the
fdinfo of sock map link fd. And in order to spot such omission early for
the newly-added link type in the future, it also checks the validity of
the link->type and adds a WARN_ONCE() for missed invocation.
Please see individual patches for more details. And comments are always
welcome.
v3:
* patch #2: check and warn the validity of link->type instead of
adding a static assertion for bpf_link_type_strs array.
v2: http://lore.kernel.org/bpf/d49fa2f4-f743-c763-7579-c3cab4dd88cb@xxxxxxxxxxxxxxx
Hou Tao (2):
bpf: Add the missing BPF_LINK_TYPE invocation for sockmap
bpf: Check validity of link->type in bpf_link_show_fdinfo()
include/linux/bpf_types.h | 1 +
include/uapi/linux/bpf.h | 3 +++
kernel/bpf/syscall.c | 14 +++++++++-----
tools/include/uapi/linux/bpf.h | 3 +++
4 files changed, 16 insertions(+), 5 deletions(-)
--
2.29.2
