[PATCH 0/2] of: overlay: avoid potential null pointer exception

[Michael Riesch <michael.riesch@wolfvision.net>]

Hi all,

The function of_overlay_fix_path returns NULL in certain error cases but
of_overlay_apply_symbols (which is the only caller) does not check the
return value. For broken overlays this may result in a null pointer
exception. Fix this by checking the return value and inform the user
what exactly went wrong. To this end, improve the error handling in
of_overlay_apply_tree.

The thread [0] gives a bit more context.

Best regards,
Michael

[0] https://lore.barebox.org/barebox/95ff064f-aa11-c1ce-9d41-e38f2040c565@wolfvision.net/T/#u

Michael Riesch (2):
  of: overlay: improve error handling in of_overlay_apply_tree
  of: overlay: avoid potential null pointer exception

 drivers/of/overlay.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

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2.30.2