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dbd9d6f8fa
For obvious security reasons, a core dump is aborted if the filesystem cannot preserve ownership or permissions of the dump file. This affects filesystems like e.g. vfat, but also something like a 9pfs share in a Qemu test setup, running as a regular user, depending on the security model used. In those cases, the result is an empty core file and a confused user. To hopefully save other people a lot of time figuring out the cause, this patch adds a simple log message for those specific cases. [akpm@linux-foundation.org: s/|%s/%s/ in printk text] Link: https://lkml.kernel.org/r/20210701233151.102720-1-david.oberhollenzer@sigma-star.at Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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 Restructured Text 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.