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| author | John Garry <john.garry@huawei.com> | 2018-06-08 18:26:33 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2018-06-18 11:04:28 -0700 |
| commit | fae2a63737e5973f1426bc139935a0f42e232844 (patch) | |
| tree | 92dca3ec97b95f7cc1c2f883aa667006a61626ff /drivers/ata/ahci_mvebu.c | |
| parent | 9ffc59d57228d74809700be6f7ecb1db10292f05 (diff) | |
| download | blackbird-obmc-linux-fae2a63737e5973f1426bc139935a0f42e232844.tar.gz blackbird-obmc-linux-fae2a63737e5973f1426bc139935a0f42e232844.zip | |
libahci: Fix possible Spectre-v1 pmp indexing in ahci_led_store()
Currently smatch warns of possible Spectre-V1 issue in ahci_led_store():
drivers/ata/libahci.c:1150 ahci_led_store() warn: potential spectre issue 'pp->em_priv' (local cap)
Userspace controls @pmp from following callchain:
em_message->store()
->ata_scsi_em_message_store()
-->ap->ops->em_store()
--->ahci_led_store()
After the mask+shift @pmp is effectively an 8b value, which is used to
index into an array of length 8, so sanitize the array index.
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata/ahci_mvebu.c')
0 files changed, 0 insertions, 0 deletions
