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| author | Mikulas Patocka <mpatocka@redhat.com> | 2009-03-18 23:53:16 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-03-18 23:53:16 -0700 |
| commit | 192d7a4667c6d11d1a174ec4cad9a3c5d5f9043c (patch) | |
| tree | 492fa7fbedffb167191aa4d6e218613667fb2864 /arch/sparc/kernel/pci_common.c | |
| parent | 42cc77c861e8e850e86252bb5b1e12e006261973 (diff) | |
| download | lwn-192d7a4667c6d11d1a174ec4cad9a3c5d5f9043c.tar.gz lwn-192d7a4667c6d11d1a174ec4cad9a3c5d5f9043c.zip | |
sparc64: Fix crash with /proc/iomem
When you compile kernel on Sparc64 with heap memory checking and type
"cat /proc/iomem", you get a crash, because pointers in struct
resource are uninitialized.
Most code fills struct resource with zeros, so I assume that it is
responsibility of the caller of request_resource to initialized it,
not the responsibility of request_resource functuion.
After 2.6.29 is out, there could be a check for uninitialized fields
added to request_resource to avoid crashes like this.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/pci_common.c')
| -rw-r--r-- | arch/sparc/kernel/pci_common.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc/kernel/pci_common.c b/arch/sparc/kernel/pci_common.c index 64e6edf17b9d..b775658a927d 100644 --- a/arch/sparc/kernel/pci_common.c +++ b/arch/sparc/kernel/pci_common.c @@ -368,7 +368,7 @@ static void pci_register_iommu_region(struct pci_pbm_info *pbm) const u32 *vdma = of_get_property(pbm->op->node, "virtual-dma", NULL); if (vdma) { - struct resource *rp = kmalloc(sizeof(*rp), GFP_KERNEL); + struct resource *rp = kzalloc(sizeof(*rp), GFP_KERNEL); if (!rp) { prom_printf("Cannot allocate IOMMU resource.\n"); |