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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2021-08-12 10:00:04 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2021-08-12 22:14:50 +0300 |
| commit | 7eb6ea4148579b85540a41d57bcec315b8af8ff8 (patch) | |
| tree | ef5aeb3142492db44de106d3a27f864881795134 /drivers/pci/pci.c | |
| parent | e15ac2080ec2fde6ebc59f1c8afdf7c52374035e (diff) | |
| download | linux-7eb6ea4148579b85540a41d57bcec315b8af8ff8.tar.xz | |
PCI: Fix pci_dev_str_match_path() alloc while atomic bug
pci_dev_str_match_path() is often called with a spinlock held so the
allocation has to be atomic. The call tree is:
pci_specified_resource_alignment() <-- takes spin_lock();
pci_dev_str_match()
pci_dev_str_match_path()
Fixes: 45db33709ccc ("PCI: Allow specifying devices using a base bus and path of devfns")
Link: https://lore.kernel.org/r/20210812070004.GC31863@kili
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index aacf575c15cf..9a6513ffdef1 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -265,7 +265,7 @@ static int pci_dev_str_match_path(struct pci_dev *dev, const char *path, *endptr = strchrnul(path, ';'); - wpath = kmemdup_nul(path, *endptr - path, GFP_KERNEL); + wpath = kmemdup_nul(path, *endptr - path, GFP_ATOMIC); if (!wpath) return -ENOMEM; |