From: Tobias Klauser <tklauser@distanz.ch> stable inclusion from stable-5.10.54 commit 2fc8048265ce8a4357addac6874e2fad905134be bugzilla: 175586 https://gitee.com/openeuler/kernel/issues/I4DVDU Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit d444b06e40855219ef38b5e9286db16d435f06dc ] Fix and add a missing NULL check for the prior malloc() call. Fixes: 49a086c201a9 ("bpftool: implement prog load command") Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Quentin Monnet <quentin@isovalent.com> Acked-by: Roman Gushchin <guro@fb.com> Link: https://lore.kernel.org/bpf/20210715110609.29364-1-tklauser@distanz.ch Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Chen Jun <chenjun102@huawei.com> Acked-by: Weilong Chen <chenweilong@huawei.com> Signed-off-by: Chen Jun <chenjun102@huawei.com> --- tools/bpf/bpftool/common.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tools/bpf/bpftool/common.c b/tools/bpf/bpftool/common.c index 65303664417e..6ebf2b215ef4 100644 --- a/tools/bpf/bpftool/common.c +++ b/tools/bpf/bpftool/common.c @@ -221,6 +221,11 @@ int mount_bpffs_for_pin(const char *name) int err = 0; file = malloc(strlen(name) + 1); + if (!file) { + p_err("mem alloc failed"); + return -1; + } + strcpy(file, name); dir = dirname(file); -- 2.20.1