From: Christophe JAILLET christophe.jaillet@wanadoo.fr
[ Upstream commit 1e5c66afd4a40bb7be17cb33cbb1a1085f727730 ]
It is not allowed to sleep within a RCU read section, so use GFP_ATOMIC instead of GFP_KERNEL here.
Link: https://lore.kernel.org/r/02d9ec4a10235def0e764ff1f5be881ba12e16e8.170439785... Fixes: ae21f835a5bd ("PCI/P2PDMA: Finish RCU conversion of pdev->p2pdma") Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr Signed-off-by: Bjorn Helgaas bhelgaas@google.com Reviewed-by: Logan Gunthorpe logang@deltatee.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/p2pdma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c index 316fd2f44df45..57654c82b08e8 100644 --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -536,7 +536,7 @@ calc_map_type_and_dist(struct pci_dev *provider, struct pci_dev *client, p2pdma = rcu_dereference(provider->p2pdma); if (p2pdma) xa_store(&p2pdma->map_types, map_types_idx(client), - xa_mk_value(map_type), GFP_KERNEL); + xa_mk_value(map_type), GFP_ATOMIC); rcu_read_unlock(); return map_type; }