diff options
| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2024-01-04 22:52:35 +0300 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2024-03-27 01:19:46 +0300 |
| commit | 1bb68f30d8b6131582952e8cd4bcd0eca732ed87 (patch) | |
| tree | fa31d0d052aea6c6ad303fb839d155292cf5392e /drivers/pci | |
| parent | 42954c374534f37dd25a4096b52d28e46dc1f8ba (diff) | |
| download | linux-1bb68f30d8b6131582952e8cd4bcd0eca732ed87.tar.xz | |
PCI/P2PDMA: Fix a sleeping issue in a RCU read section
[ 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/02d9ec4a10235def0e764ff1f5be881ba12e16e8.1704397858.git.christophe.jaillet@wanadoo.fr
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>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/p2pdma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c index fa7370f9561a..b8becc7257cd 100644 --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -661,7 +661,7 @@ done: 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; } |