diff options
author | Long Li <longli@microsoft.com> | 2017-03-23 14:58:32 -0700 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-22 09:17:42 +0100 |
commit | 422fcc97747961709f9faa97b5d1f3f4305b67b8 (patch) | |
tree | 0ff2eda7c9bc575db69cada6238fc4066fc44fb7 /sound | |
parent | fd15bade786ee8d2db6fe45b5b7784a1ec9ca2b7 (diff) |
PCI: hv: Lock PCI bus on device eject
[ Upstream commit 414428c5da1c71986727c2fa5cdf1ed071e398d7 ]
A PCI_EJECT message can arrive at the same time we are calling
pci_scan_child_bus() in the workqueue for the previous PCI_BUS_RELATIONS
message or in create_root_hv_pci_bus(). In this case we could potentially
modify the bus from multiple places.
Properly lock the bus access.
Thanks Dexuan Cui <decui@microsoft.com> for pointing out the race condition
in create_root_hv_pci_bus().
Reported-by: Xiaofeng Wang <xiaofwan@redhat.com>
Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
0 files changed, 0 insertions, 0 deletions