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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2015-06-01 16:05:11 +0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-06-12 16:54:21 +0200 |
| commit | 77ed42f18edd486e9994ccd1f174076309a6343f (patch) | |
| tree | 7ec199ca67512dad798da59eb9ff9d251cb43c51 /kernel/irq/internals.h | |
| parent | 7bbf1dd24b17b9ec4f47c43ce4e05bf190745553 (diff) | |
| download | linux-stable-77ed42f18edd486e9994ccd1f174076309a6343f.tar.gz linux-stable-77ed42f18edd486e9994ccd1f174076309a6343f.tar.bz2 linux-stable-77ed42f18edd486e9994ccd1f174076309a6343f.zip | |
genirq: Prevent crash in irq_move_irq()
The functions irq_move_irq() and irq_move_masked_irq() expect that the
caller passes the top-level irq_data to them when hierarchical
irqdomains are enabled. But that's not true when called from
apic_ack_edge(), which results in a null pointer dereference by
idata->chip->irq_mask(idata).
Instead of fixing callers to passing top-level irq_data, we rather
change irq_move_irq()/irq_move_masked_irq() to accept any irq_data.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/1433145945-789-3-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/irq/internals.h')
0 files changed, 0 insertions, 0 deletions