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df2e19a883
bch2_stdio_redirect_vprintf() was missing a check for stdio->done, i.e. exiting. This caused the thread attempting to print to spin, and since it was being called from the kthread ran by thread_with_stdio, the userspace side hung as well. Change it to return -EPIPE - i.e. writing to a pipe that's been closed. Reported-by: Jan Solanti <jhs@psonet.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.