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| author | Eryu Guan <[email protected]> | 2018-01-23 17:20:00 +0000 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2018-01-24 16:46:09 +0000 |
| commit | 6b136a24b05c81a24e0b648a4bd938bcd0c4f69e (patch) | |
| tree | efa76cb522a4a75c2970b6ec0a59aa64ba391706 /net/unix/af_unix.c | |
| parent | block: Set BIO_TRACE_COMPLETION on new bio during split (diff) | |
| download | kernel-6b136a24b05c81a24e0b648a4bd938bcd0c4f69e.tar.gz kernel-6b136a24b05c81a24e0b648a4bd938bcd0c4f69e.zip | |
blk-mq-debugfs: don't allow write on attributes with seq_operations set
Attributes that only implement .seq_ops are read-only, any write to
them should be rejected. But currently kernel would crash when
writing to such debugfs entries, e.g.
chmod +w /sys/kernel/debug/block/<dev>/requeue_list
echo 0 > /sys/kernel/debug/block/<dev>/requeue_list
chmod -w /sys/kernel/debug/block/<dev>/requeue_list
Fix it by returning -EPERM in blk_mq_debugfs_write() when writing to
such attributes.
Cc: Ming Lei <[email protected]>
Signed-off-by: Eryu Guan <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions