diff options
| author | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2021-04-07 20:57:50 +0100 |
|---|---|---|
| committer | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2021-04-12 22:33:33 +0100 |
| commit | 0db895361b8a82e1114372ff9f4857abea605701 (patch) | |
| tree | 6c514a31795869d238bdd17660281f679ecfa882 /scsi | |
| parent | ff4a1daba6adc8811efb5046483feb3af6bd8d83 (diff) | |
esp: always check current_req is not NULL before use in DMA callbacks
After issuing a SCSI command the SCSI layer can call the SCSIBusInfo .cancel
callback which resets both current_req and current_dev to NULL. If any data
is left in the transfer buffer (async_len != 0) then the next TI (Transfer
Information) command will attempt to reference the NULL pointer causing a
segfault.
Buglink: https://bugs.launchpad.net/qemu/+bug/1910723
Buglink: https://bugs.launchpad.net/qemu/+bug/1909247
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Tested-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20210407195801.685-2-mark.cave-ayland@ilande.co.uk>
Diffstat (limited to 'scsi')
0 files changed, 0 insertions, 0 deletions