Re: [PATCH] irq: ipi: fix NULL pointer deref in irq_data_get_affinity_mask()

[Thomas Gleixner]

On Wed, Feb 08 2023 at 21:35, Sergey Shtylyov wrote:
> On 8/17/22 11:00 PM, Sergey Shtylyov wrote:
>
>> Iff ipi_send_{mask|single}() get called with e.g. an invalid IRQ #, all the
>> local variables there will be NULL -- the problem is that ipi_send_verify()
>> (that's called first thing) doesn't 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 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@xxxxxx>
>
>    Patch fell thru the cracks? :-/

Obviously :)

/me goes to find trash tongs to pick it up