5.15-stable review patch. If anyone has any objections, please let me know.
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From: Zijun Hu quic_zijuhu@quicinc.com
[ 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@quicinc.com Link: https://lore.kernel.org/r/20250109-of_core_fix-v4-10-db8a72415b8c@quicinc.co... Signed-off-by: Rob Herring (Arm) robh@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 6ec668ae2d6fa..8d6ca796d9ffa 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_free(base, size); }
- kmemleak_ignore_phys(base); + if (!err) + kmemleak_ignore_phys(base);
return err; }