CC: kbuild-all(a)lists.01.org CC: linux-arm-kernel(a)lists.infradead.org TO: Sven Peter CC: Marc Zyngier CC: Joerg Roedel CC: Will Deacon CC: iommu(a)lists.linux-foundation.org CC: linux-kernel(a)vger.kernel.org From: kernel test robot drivers/iommu/apple-dart-iommu.c:438:35-45: ERROR: function apple_dart_attach_stream called on line 519 inside lock on line 509 but uses GFP_KERNEL Find functions that refer to GFP_KERNEL but are called with locks held. Semantic patch information: The proposed change of converting the GFP_KERNEL is not necessarily the correct one. It may be desired to unlock the lock, or to not call the function under the lock in the first place. Generated by: scripts/coccinelle/locks/call_kern.cocci Fixes: ce67d3b3ef37 ("iommu: dart: Add DART iommu driver") CC: Sven Peter Reported-by: kernel test robot Signed-off-by: kernel test robot --- tree: https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git hack/m1-pcie head: 1fd2c9634dd24fba323baba52200de18e4d3f4ee commit: ce67d3b3ef3734925631ec65deb1cf8078d826cf [14/15] iommu: dart: Add DART iommu driver :::::: branch date: 8 hours ago :::::: commit date: 8 hours ago Please take the patch only if it's a positive warning. Thanks! apple-dart-iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/iommu/apple-dart-iommu.c +++ b/drivers/iommu/apple-dart-iommu.c @@ -435,7 +435,7 @@ static int apple_dart_attach_stream(stru goto error; } - stream = kzalloc(sizeof(*stream), GFP_KERNEL); + stream = kzalloc(sizeof(*stream), GFP_ATOMIC); if (!stream) { ret = -ENOMEM; goto error;