Description
In the Linux kernel, the following vulnerability has been resolved: NTB: epf: Avoid pci_iounmap() with offset when PEER_SPAD and CONFIG share BAR When BAR_PEER_SPAD and BAR_CONFIG share one PCI BAR, the module teardown path ends up calling pci_iounmap() on the same iomem with some offset, which is unnecessary and triggers a kernel warning like the following: Trying to vunmap() nonexistent vm area (0000000069a5ffe8) WARNING: mm/vmalloc.c:3470 at vunmap+0x58/0x68, CPU#5: modprobe/2937 [...] Call trace: vunmap+0x58/0x68 (P) iounmap+0x34/0x48 pci_iounmap+0x2c/0x40 ntb_epf_pci_remove+0x44/0x80 [ntb_hw_epf] pci_device_remove+0x48/0xf8 device_remove+0x50/0x88 device_release_driver_internal+0x1c8/0x228 driver_detach+0x50/0xb0 bus_remove_driver+0x74/0x100 driver_unregister+0x34/0x68 pci_unregister_driver+0x34/0xa0 ntb_epf_pci_driver_exit+0x14/0xfe0 [ntb_hw_epf] [...] Fix it by unmapping only when PEER_SPAD and CONFIG use difference bars.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4 to < eb47b9bffd07a47b84910847cb5ea066ce184055affectede75d5ae8ab88b7ffb3d1d56124b003f3555f74b4 to < 06f6dd2ff2bd07eaf7178a807407ff27e85122b4affectede75d5ae8ab88b7ffb3d1d56124b003f3555f74b4 to < a4be4a1308f02bff79a30eea2d04ead5b63685f2affectede75d5ae8ab88b7ffb3d1d56124b003f3555f74b4 to < 81371dbd23601f67f01372817fdbab42c5601e43affectede75d5ae8ab88b7ffb3d1d56124b003f3555f74b4 to < 9764a786ba98db58f0725913c369e721253aba33affectede75d5ae8ab88b7ffb3d1d56124b003f3555f74b4 to < d876153680e3d721d385e554def919bce3d18c74affected
Linux Linux
Default version status: affected
6.0affected0 to < 6.0unaffected6.1.177 to ≤ 6.1.*unaffected6.6.144 to ≤ 6.6.*unaffected6.12.95 to ≤ 6.12.*unaffected6.18.38 to ≤ 6.18.*unaffected7.1.3 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/eb47b9bffd07a47b84910847cb5ea066ce184055 ↗
- https://git.kernel.org/stable/c/06f6dd2ff2bd07eaf7178a807407ff27e85122b4 ↗
- https://git.kernel.org/stable/c/a4be4a1308f02bff79a30eea2d04ead5b63685f2 ↗
- https://git.kernel.org/stable/c/81371dbd23601f67f01372817fdbab42c5601e43 ↗
- https://git.kernel.org/stable/c/9764a786ba98db58f0725913c369e721253aba33 ↗
- https://git.kernel.org/stable/c/d876153680e3d721d385e554def919bce3d18c74 ↗