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| author | Michel Dänzer <michel.daenzer@amd.com> | 2015-01-19 11:53:20 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2015-01-24 02:42:59 +0300 |
| commit | 16b036af31e1456cb69243a5a0c9ef801ecd1f17 (patch) | |
| tree | 843e54f9032b465a487485e6a4a1471e8409c03c /drivers/pci/pci.c | |
| parent | 97bf6af1f928216fd6c5a66e8a57bfa95a659672 (diff) | |
| download | linux-16b036af31e1456cb69243a5a0c9ef801ecd1f17.tar.xz | |
PCI: Fix infinite loop with ROM image of size 0
If the image size would ever read as 0, pci_get_rom_size() could keep
processing the same image over and over again. Exit the loop if we ever
read a length of zero.
This fixes a soft lockup on boot when the radeon driver calls
pci_get_rom_size() on an AMD Radeon R7 250X PCIe discrete graphics card.
[bhelgaas: changelog, reference]
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1386973
Reported-by: Federico <federicotg@gmail.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
CC: stable@vger.kernel.org
Diffstat (limited to 'drivers/pci/pci.c')
0 files changed, 0 insertions, 0 deletions