6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
[ Upstream commit 29091a52562bca4d6e678dd8f0085dac119d6a21 ]
early_init_dt_alloc_reserved_memory_arch() will free address @base when
suffers memblock_mark_nomap() error, but it still makes kmemleak ignore
the freed address @base via kmemleak_ignore_phys().
That is unnecessary, besides, also causes unnecessary warning messages:
kmemleak_ignore_phys()
-> make_black_object()
-> paint_ptr()
-> kmemleak_warn() // warning message here.
Fix by avoiding kmemleak_ignore_phys() when suffer the error.
Fixes: 658aafc8139c ("memblock: exclude MEMBLOCK_NOMAP regions from kmemleak")
Signed-off-by: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20250109-of_core_fix-v4-10-db8a72415b8c@xxxxxxxxxxx
Signed-off-by: Rob Herring (Arm) <robh@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/of/of_reserved_mem.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index 7ec94cfcbddb1..959f1808c240f 100644
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -50,7 +50,8 @@ static int __init early_init_dt_alloc_reserved_memory_arch(phys_addr_t size,
memblock_phys_free(base, size);
}
- kmemleak_ignore_phys(base);
+ if (!err)
+ kmemleak_ignore_phys(base);
return err;
}
--
2.39.5
