Pu Lehui 6dcdd1b68b bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE ... [ Upstream commit 34de8e6e0e ] When using bpftool to pin {PROG, MAP, LINK} without FILE, segmentation fault will occur. The reson is that the lack of FILE will cause strlen to trigger NULL pointer dereference. The corresponding stacktrace is shown below: do_pin do_pin_any do_pin_fd mount_bpffs_for_pin strlen(name) <- NULL pointer dereference Fix it by adding validation to the common process. Fixes: 75a1e792c3 ("tools: bpftool: Allow all prog/map handles for pinning objects") Signed-off-by: Pu Lehui <pulehui@huawei.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Quentin Monnet <quentin@isovalent.com> Link: https://lore.kernel.org/bpf/20221102084034.3342995-1-pulehui@huaweicloud.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-11-16 09:58:15 +01:00
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bpftool	bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE	2022-11-16 09:58:15 +01:00
resolve_btfids	…
runqslower	…
.gitignore	…
Makefile	…
bpf_asm.c	…
bpf_dbg.c	…
bpf_exp.l	…
bpf_exp.y	…
bpf_jit_disasm.c	…