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| author | Thomas Gleixner <tglx@linutronix.de> | 2022-01-19 18:54:52 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2022-01-21 02:14:46 +0100 |
| commit | a0af3d1104f752b6d0dba71788e3fddd67c857a7 (patch) | |
| tree | 36825fdf15c9fd187c10b64c6ed3e63768db549a /drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | |
| parent | 1d1df41c5a33359a00e919d54eaebfb789711fdc (diff) | |
PCI/MSI: Prevent UAF in error path
When the core MSI allocation fails, then the PCI/MSI code uses an already
freed MSI descriptor to unmask the MSI mask register in order to bring it back
into reset state.
Remove MSI_FLAG_FREE_MSI_DESCS from the PCI/MSI irqdomain flags and let the
PCI/MSI code free the MSI descriptors after usage.
Fixes: 0f62d941acf9 ("genirq/msi: Provide msi_domain_alloc/free_irqs_descs_locked()")
Reported-by: Tong Zhang <ztong0001@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Tong Zhang <ztong0001@gmail.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/87r1938vbn.ffs@tglx
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c')
0 files changed, 0 insertions, 0 deletions