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| author | Jesper Juhl <jj@chaosbits.net> | 2011-01-24 21:14:33 +0100 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2011-02-08 13:08:05 -0800 |
| commit | 7c867c8899e873652ef98a890d2e647c092bec25 (patch) | |
| tree | 482e3c673dd58243be6ed73915fd0c92dc44ca9a /drivers/pci/iova.c | |
| parent | c13ff2ff3ad1479f222e18f9caba3db5af68d549 (diff) | |
| download | blackbird-op-linux-7c867c8899e873652ef98a890d2e647c092bec25.tar.gz blackbird-op-linux-7c867c8899e873652ef98a890d2e647c092bec25.zip | |
PCI: Avoid potential NULL pointer dereference in pci_scan_bridge
pci_add_new_bus() calls pci_alloc_child_bus() which calls pci_alloc_bus()
that allocates memory dynamically with kzalloc(). The return value of
kzalloc() is the pointer that's eventually returned from
pci_add_new_bus(), so since kzalloc() can fail and return NULL so can
pci_add_new_bus(). Thus we may end up dereferencing a NULL pointer in
drivers/pci/probe.c::pci_scan_bridge(). Seems to me we should test for
this and bail out if it happens rather than crashing.
Also removed some trailing whitespace that bugged me while looking at
this.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/iova.c')
0 files changed, 0 insertions, 0 deletions
