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| author | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2021-04-07 20:57:50 +0100 |
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| committer | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2021-04-12 22:33:33 +0100 |
| commit | 0db895361b8a82e1114372ff9f4857abea605701 (patch) | |
| tree | 6c514a31795869d238bdd17660281f679ecfa882 /scripts/qapi/main.py | |
| parent | ff4a1daba6adc8811efb5046483feb3af6bd8d83 (diff) | |
| download | focaccia-qemu-0db895361b8a82e1114372ff9f4857abea605701.tar.gz focaccia-qemu-0db895361b8a82e1114372ff9f4857abea605701.zip | |
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 'scripts/qapi/main.py')
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