[+cc Marcin] On Mon, Oct 14, 2024 at 09:39:20AM +0800, Baolu Lu wrote: > On 2024/10/12 11:07, Lu Baolu wrote: > > Previously, the domain_context_clear() function incorrectly called > > pci_for_each_dma_alias() to set up context entries for non-PCI devices. > > This could lead to kernel hangs or other unexpected behavior. > > > > Add a check to only call pci_for_each_dma_alias() for PCI devices. For > > non-PCI devices, domain_context_clear_one() is called directly. > > > > Reported-by: Todd Brandt<todd.e.brandt@xxxxxxxxx> > > Closes:https://bugzilla.kernel.org/show_bug.cgi?id=219363 > > Fixes: 9a16ab9d6402 ("iommu/vt-d: Make context clearing consistent with context mapping") > > Cc:stable@xxxxxxxxxxxxxxx > > Signed-off-by: Lu Baolu<baolu.lu@xxxxxxxxxxxxxxx> > > --- > > drivers/iommu/intel/iommu.c | 4 +++- > > 1 file changed, 3 insertions(+), 1 deletion(-) > > Queued for v6.12-rc. Please include information about Marcin's report as well (assuming it is the same problem). Marcin did a LOT of work to report and bisect this, so both should be acknowledged here. See https://bugzilla.kernel.org/show_bug.cgi?id=219349 Bjorn
