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crypto: nitrox - avoid double free on error path in nitrox_sriov_init()

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[ Upstream commit 094528b6a5 ]

If alloc_workqueue() fails in nitrox_mbox_init() it deallocates
ndev->iov.vfdev and returns error code, but then nitrox_sriov_init()
calls nitrox_sriov_cleanup() where ndev->iov.vfdev is deallocated
again.

Fix this by nulling ndev->iov.vfdev after the first deallocation.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 9e5de3e06e ("crypto: cavium/nitrox - Add mailbox...")
Signed-off-by: Natalia Petrova <n.petrova@fintech.ru>
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Natalia Petrova 2022-09-28 13:25:05 +03:00 committed by Greg Kroah-Hartman
parent 204fdddd46
commit 51592cf716
1 changed files with 1 additions and 0 deletions
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1
drivers/crypto/cavium/nitrox/nitrox_mbx.c
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@ -195,6 +195,7 @@ int nitrox_mbox_init(struct nitrox_device *ndev)
ndev->iov.pf2vf_wq = alloc_workqueue("nitrox_pf2vf", 0, 0);
if (!ndev->iov.pf2vf_wq) {
kfree(ndev->iov.vfdev);
ndev->iov.vfdev = NULL;
return -ENOMEM;
}
/* enable pf2vf mailbox interrupts */