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[ Upstream commit feabecaff5902f896531dde90646ca5dfa9d4f7d ]
If ipi_send_{mask|single}() is called with an invalid interrupt number, all
the local variables there will be NULL. ipi_send_verify() which is invoked
from these functions does verify its 'data' parameter, resulting in a
kernel oops in irq_data_get_affinity_mask() as the passed NULL pointer gets
dereferenced.
Add a missing NULL pointer check in ipi_send_verify()...
Found by Linux Verification Center (linuxtesting.org) with the SVACE static
analysis tool.
Fixes: 3b8e29a82dd1 ("genirq: Implement ipi_send_mask/single()")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/b541232d-c2b6-1fe9-79b4-a7129459e4d0@omp.ru
Signed-off-by: Sasha Levin <sashal@kernel.org>
926aef60ea