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| author | Louis Rilling <louis.rilling@kerlabs.com> | 2009-12-04 14:52:42 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-12-04 16:36:18 +0100 |
| commit | b69f2292063d2caf37ca9aec7d63ded203701bf3 (patch) | |
| tree | be4acb81ea4ab7014047808ec2b2c908e8334f55 /kernel/fork.c | |
| parent | 61cc74fbb87af6aa551a06a370590c9bc07e29d9 (diff) | |
| download | linux-stable-b69f2292063d2caf37ca9aec7d63ded203701bf3.tar.gz linux-stable-b69f2292063d2caf37ca9aec7d63ded203701bf3.tar.bz2 linux-stable-b69f2292063d2caf37ca9aec7d63ded203701bf3.zip | |
block: Fix io_context leak after failure of clone with CLONE_IO
With CLONE_IO, parent's io_context->nr_tasks is incremented, but never
decremented whenever copy_process() fails afterwards, which prevents
exit_io_context() from calling IO schedulers exit functions.
Give a task_struct to exit_io_context(), and call exit_io_context() instead of
put_io_context() in copy_process() cleanup path.
Signed-off-by: Louis Rilling <louis.rilling@kerlabs.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 166b8c49257c..607353425bb0 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1310,7 +1310,8 @@ bad_fork_free_pid: if (pid != &init_struct_pid) free_pid(pid); bad_fork_cleanup_io: - put_io_context(p->io_context); + if (p->io_context) + exit_io_context(p); bad_fork_cleanup_namespaces: exit_task_namespaces(p); bad_fork_cleanup_mm: |