Description: grant mapping error handling issues
References:
 https://xenbits.xen.org/xsa/advisory-361.html
 https://lore.kernel.org/lkml/20210216124015.28923-1-jgross@suse.com/
Notes:
Bugs:
upstream: released (5.12-rc1) [a35f2ef3b7376bfd0a57f7844bd7454389aae1fc, b512e1b077e5ccdbd6e225b15d934ab12453b70a, dbe5283605b3bc12ca45def09cc721a0a5c853a2, ebee0eab08594b2bd5db716288a4f1ae5936e9bc, 36bf1dfb8b266e089afa9b7b984217f17027bf35]
5.10-upstream-stable: released (5.10.18) [740f4d9d0c34ea99279acf2fc99ae33c0142265a, 0c08037b56a77219a6ec67c2cb19abf38722a525, 1a5c2274349f5b6f3b6bbdf43247e71a50ae6e2f, be89a0300a58c273b6f48bb8db01c807e203098b, 0462dbbe2cab43528f943575b510625cf422921a]
4.19-upstream-stable: released (4.19.177) [dfed59ee4b41b0937163dfed36752d29e72d0712, c3d586afdb4474f9389eeddf6c9259e33cc0a321, ba75f4393225c4049797388329313d1d9a5ef480, e07f06f6bbeed5bf47fed79ac6a57ec62b33304a, 271a3984f73c485f4c1b796a61cc5bd3994a0463]
4.9-upstream-stable: released (4.9.258) [34156171ae855364456933c1aea81ea0f2536853, a3c335bbc0ec0b56975a82d4c29c95279631e9bf, c5b81504415eeee141036834eb4d756db4f8105a, 3a707cbd8138284d9f43b66edd29b56ca76b00cd, 06897d9dcc0d3194044815af13252886ecb39c3b]
sid: released (5.10.19-1)
4.19-buster-security: released (4.19.177-1)
4.9-stretch-security: released (4.9.258-1)