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author | Bernd Schubert <bernd.schubert@itwm.fraunhofer.de> | 2012-05-11 16:36:44 +0200 |
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committer | Jens Axboe <axboe@kernel.dk> | 2012-05-11 16:45:12 +0200 |
commit | f908ee9463b09ddd05e1c1a0111132212dc05fac (patch) | |
tree | af80b227ec2049aa23fc3a8867e70fd685a4d34a /fs/autofs4 | |
parent | 080399aaaf3531f5b8761ec0ac30ff98891e8686 (diff) | |
download | linux-f908ee9463b09ddd05e1c1a0111132212dc05fac.tar.gz |
bio allocation failure due to bio_get_nr_vecs()
The number of bio_get_nr_vecs() is passed down via bio_alloc() to bvec_alloc_bs(), which fails the bio allocation if nr_iovecs > BIO_MAX_PAGES. For the underlying caller this causes an unexpected bio allocation failure. Limiting to queue_max_segments() is not sufficient, as max_segments also might be very large. bvec_alloc_bs(gfp_mask, nr_iovecs, ) => NULL when nr_iovecs > BIO_MAX_PAGES bio_alloc_bioset(gfp_mask, nr_iovecs, ...) bio_alloc(GFP_NOIO, nvecs) xfs_alloc_ioend_bio() Signed-off-by: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de> Cc: stable@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/autofs4')
0 files changed, 0 insertions, 0 deletions