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| author | Thomas Gleixner <[email protected]> | 2025-03-26 12:05:35 +0000 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2025-03-26 14:28:43 +0000 |
| commit | 3ece3e8e5976c49c3f887e5923f998eabd54ff40 (patch) | |
| tree | fd73e37f36bb6854e79656acdd76d9ae99d4737a /net/unix/unix_bpf.c | |
| parent | Merge tag 'for-linus-6.15-rc1-tag' of git://git.kernel.org/pub/scm/linux/kern... (diff) | |
| download | kernel-3ece3e8e5976c49c3f887e5923f998eabd54ff40.tar.gz kernel-3ece3e8e5976c49c3f887e5923f998eabd54ff40.zip | |
PCI/MSI: Handle the NOMASK flag correctly for all PCI/MSI backends
The conversion of the XEN specific global variable pci_msi_ignore_mask to a
MSI domain flag, missed the facts that:
1) Legacy architectures do not provide a interrupt domain
2) Parent MSI domains do not necessarily have a domain info attached
Both cases result in an unconditional NULL pointer dereference. This was
unfortunatly missed in review and testing revealed it late.
Cure this by using the existing pci_msi_domain_supports() helper, which
handles all possible cases correctly.
Fixes: c3164d2e0d18 ("PCI/MSI: Convert pci_msi_ignore_mask to per MSI domain flag")
Reported-by: Daniel Gomez <[email protected]>
Reported-by: Borislav Petkov <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Juergen Gross <[email protected]>
Tested-by: Marek Szyprowski <[email protected]>
Tested-by: Borislav Petkov <[email protected]>
Tested-by: Daniel Gomez <[email protected]>
Link: https://lore.kernel.org/all/87iknwyp2o.ffs@tglx
Closes: https://lore.kernel.org/all/qn7fzggcj6qe6r6gdbwcz23pzdz2jx64aldccmsuheabhmjgrt@tawf5nfwuvw7
Diffstat (limited to 'net/unix/unix_bpf.c')
0 files changed, 0 insertions, 0 deletions