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| author |   Wang Sheng-Hui <shhuiw@gmail.com> | 2013-08-21 21:49:42 -0400 |
|---|---|---|
| committer |   Chris Metcalf <cmetcalf@tilera.com> | 2013-09-03 14:53:34 -0400 |
| commit | 6d715790ef6b5b903779a14d995ce3d9e680bec0 (patch) | |
| tree | 8ff5c867220173ded9e7de932b9a9759855ec5f1 /arch/tile | |
| parent | tile: make __write_once a synonym for __read_mostly (diff) | |
| download | linux-dev-6d715790ef6b5b903779a14d995ce3d9e680bec0.tar.xz linux-dev-6d715790ef6b5b903779a14d995ce3d9e680bec0.zip | |
tile: add null check for kzalloc in tile/kernel/setup.c
Should check the return value of kzalloc first to avoid the null pointer.
Then can dereference the non-null pointer to access the fields of struct
resource.
Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile')
| -rw-r--r-- | arch/tile/kernel/setup.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c index 128a2d0b8650..c2c42f329c1a 100644 --- a/arch/tile/kernel/setup.c +++ b/arch/tile/kernel/setup.c @@ -1643,6 +1643,8 @@ insert_non_bus_resource(void) { struct resource *res = kzalloc(sizeof(struct resource), GFP_ATOMIC); + if (!res) + return NULL; res->name = "Non-Bus Physical Address Space"; res->start = (1ULL << 32); res->end = -1LL; @@ -1660,6 +1662,8 @@ insert_ram_resource(u64 start_pfn, u64 end_pfn, bool reserved) { struct resource *res = kzalloc(sizeof(struct resource), GFP_ATOMIC); + if (!res) + return NULL; res->name = reserved ? "Reserved" : "System RAM"; res->start = start_pfn << PAGE_SHIFT; res->end = (end_pfn << PAGE_SHIFT) - 1; |