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(parent: 2585cf9) | patch
libata: if T_LENGTH is zero, dma direction should be DMA_NONE
authorGeorge Kennedy <george.kennedy@oracle.com>
Tue, 14 Dec 2021 14:45:10 +0000 (09:45 -0500)
committerDamien Le Moal <damien.lemoal@opensource.wdc.com>
Fri, 17 Dec 2021 00:32:13 +0000 (09:32 +0900)
commit5da5231bb47864e5dd6c6731151e98b6ee498827
tree4f77e810de24912167ecc4614b77bcc6262e6a84tree | snapshot
parent2585cf9dfaaddf00b069673f27bb3f8530e2039ccommit | diff
libata: if T_LENGTH is zero, dma direction should be DMA_NONE

Avoid data corruption by rejecting pass-through commands where
T_LENGTH is zero (No data is transferred) and the dma direction
is not DMA_NONE.

Cc: <stable@vger.kernel.org>
Reported-by: syzkaller<syzkaller@googlegroups.com>
Signed-off-by: George Kennedy<george.kennedy@oracle.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
drivers/ata/libata-scsi.c diff | blob | history
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