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authorTom Lendacky <thomas.lendacky@amd.com>2018-07-03 12:11:33 -0500
committerHerbert Xu <herbert@gondor.apana.org.au>2018-07-13 18:26:48 +0800
commitf426d2b20f1cd63818873593031593e15c3db20b (patch)
tree3aab62b69acd62c556f1fe7a6a79d60fdf969b9a /drivers/md/dm-bio-prison-v2.c
parent5c324a2ffa06f8b6fda59a77c6807acb9f45cfee (diff)
crypto: ccp - Fix command completion detection race
The wait_event() function is used to detect command completion. The interrupt handler will set the wait condition variable when the interrupt is triggered. However, the variable used for wait_event() is initialized after the command has been submitted, which can create a race condition with the interrupt handler and result in the wait_event() never returning. Move the initialization of the wait condition variable to just before command submission. Fixes: 200664d5237f ("crypto: ccp: Add Secure Encrypted Virtualization (SEV) command support") Cc: <stable@vger.kernel.org> # 4.16.x- Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Reviewed-by: Brijesh Singh <brijesh.singh@amd.com> Acked-by: Gary R Hook <gary.hook@amd.com> Acked-by: Gary R Hook <gary.hook@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/md/dm-bio-prison-v2.c')
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