https://github.com/torvalds/linux
Revision 48d499bd89191b359a6dbe44d32107e3021571c2 authored by Frank Rowand on 08 April 2021, 20:45:08 UTC, committed by Rob Herring on 08 April 2021, 21:38:47 UTC
The Devicetree standard specifies an 8 byte alignment of the FDT.
Code in libfdt expects this alignment for an FDT image in memory.
kmemdup() returns 4 byte alignment on openrisc.  Replace kmemdup()
with kmalloc(), align pointer, memcpy() to get proper alignment.

The 4 byte alignment exposed a related bug which triggered a crash
on openrisc with:
commit 79edff12060f ("scripts/dtc: Update to upstream version v1.6.0-51-g183df9e9c2b9")
as reported in:
https://lore.kernel.org/lkml/20210327224116.69309-1-linux@roeck-us.net/

Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Link: https://lore.kernel.org/r/20210408204508.2276230-1-frowand.list@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>
1 parent 649cab5
History
Tip revision: 48d499bd89191b359a6dbe44d32107e3021571c2 authored by Frank Rowand on 08 April 2021, 20:45:08 UTC
of: unittest: overlay: ensure proper alignment of copied FDT
Tip revision: 48d499b
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