Searched hist:"53 cc0b29" (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/block/ |
| H A D | blk-map.c | 53cc0b29 Wed Nov 19 04:12:14 CST 2008 Petr Vandrovec <petr@vandrovec.name> When block layer fails to map iov, it calls bio_unmap_user to undo
mapping. Which is good if pages were mapped - but if they were provided
by someone else and just copied then bad things happen - pages are
released once here, and once by caller, leading to user triggerable BUG
at include/linux/mm.h:246.
Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
53cc0b29 Wed Nov 19 04:12:14 CST 2008 Petr Vandrovec <petr@vandrovec.name> When block layer fails to map iov, it calls bio_unmap_user to undo
mapping. Which is good if pages were mapped - but if they were provided
by someone else and just copied then bad things happen - pages are
released once here, and once by caller, leading to user triggerable BUG
at include/linux/mm.h:246.
Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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