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| author | Nikunj A Dadhania <[email protected]> | 2025-03-06 08:17:21 +0000 |
|---|---|---|
| committer | Borislav Petkov (AMD) <[email protected]> | 2025-03-07 12:34:25 +0000 |
| commit | ac7c06acaa3738b38e83815ac0f07140ad320f13 (patch) | |
| tree | 26835ef7d2ce8d93503458fd13334586d86d0325 /tools/testing/selftests/kvm/x86/nested_exceptions_test.c | |
| parent | x86/amd_nb: Use rdmsr_safe() in amd_get_mmconfig_range() (diff) | |
| download | kernel-ac7c06acaa3738b38e83815ac0f07140ad320f13.tar.gz kernel-ac7c06acaa3738b38e83815ac0f07140ad320f13.zip | |
virt: sev-guest: Allocate request data dynamically
Commit
ae596615d93d ("virt: sev-guest: Reduce the scope of SNP command mutex")
narrowed the command mutex scope to snp_send_guest_request(). However,
GET_REPORT, GET_DERIVED_KEY, and GET_EXT_REPORT share the req structure in
snp_guest_dev. Without the mutex protection, concurrent requests can overwrite
each other's data. Fix it by dynamically allocating the request structure.
Fixes: ae596615d93d ("virt: sev-guest: Reduce the scope of SNP command mutex")
Closes: https://github.com/AMDESE/AMDSEV/issues/265
Reported-by: [email protected]
Signed-off-by: Nikunj A Dadhania <[email protected]>
Signed-off-by: Alexey Kardashevskiy <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'tools/testing/selftests/kvm/x86/nested_exceptions_test.c')
0 files changed, 0 insertions, 0 deletions