stable inclusion
from stable-v5.10.124
commit 36cd19e7d4e5571d77a2ed20c5b6ef50cf57734a
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5L6E7

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=36cd19e7d4e5571d77a2ed20c5b6ef50cf57734a

--------------------------------

[ Upstream commit bf476fe2 ]

In an unlikely (and probably wrong?) case that the 'ppi' parameter of
ata_host_alloc_pinfo() points to an array starting with a NULL pointer,
there's going to be a kernel oops as the 'pi' local variable won't get
reassigned from the initial value of NULL. Initialize 'pi' instead to
'&ata_dummy_port_info' to fix the possible kernel oops for good...

Found by Linux Verification Center (linuxtesting.org) with the SVACE static
analysis tool.
Signed-off-by: NSergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: NDamien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>