bd6f1fd5d3
During driver initialization, the pointer of card info, i.e. the
variable 'ci' is required. However, the definition of
'com20020pci_id_table' reveals that this field is empty for some
devices, which will cause null pointer dereference when initializing
these devices.
The following log reveals it:
[ 3.973806] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
[ 3.973819] RIP: 0010:com20020pci_probe+0x18d/0x13e0 [com20020_pci]
[ 3.975181] Call Trace:
[ 3.976208] local_pci_probe+0x13f/0x210
[ 3.977248] pci_device_probe+0x34c/0x6d0
[ 3.977255] ? pci_uevent+0x470/0x470
[ 3.978265] really_probe+0x24c/0x8d0
[ 3.978273] __driver_probe_device+0x1b3/0x280
[ 3.979288] driver_probe_device+0x50/0x370
Fix this by checking whether the 'ci' is a null pointer first.
Fixes:
|
||
|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| arc-rawmode.c | ||
| arc-rimi.c | ||
| arcdevice.h | ||
| arcnet.c | ||
| capmode.c | ||
| com90io.c | ||
| com90xx.c | ||
| com9026.h | ||
| com20020-isa.c | ||
| com20020-pci.c | ||
| com20020.c | ||
| com20020.h | ||
| com20020_cs.c | ||
| rfc1051.c | ||
| rfc1201.c | ||