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(parent: 0440385) | patch
samples: bpf: fix: seg fault with NULL pointer arg
authorDaniel T. Lee <danieltimlee@gmail.com>
Mon, 3 Dec 2018 10:39:30 +0000 (19:39 +0900)
committerDaniel Borkmann <daniel@iogearbox.net>
Mon, 3 Dec 2018 22:58:03 +0000 (23:58 +0100)
commit79e1b4bbf989a4b4726f1ce3de14160cbfb5d033
treee514889dba3908fda5eec6762540f06aca89262ftree | snapshot
parent04403855f5a5cd63f5eabd3abc1e52fa22323437commit | diff
samples: bpf: fix: seg fault with NULL pointer arg

When NULL pointer accidentally passed to write_kprobe_events,
due to strlen(NULL), segmentation fault happens.
Changed code returns -1 to deal with this situation.

Bug issued with Smatch, static analysis.

Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
samples/bpf/bpf_load.c diff | blob | history
Linux Kernel Source Tree.