178e31ce82
The conversion looks harmless, however the addr value is updated inside the loop with the previous vm_end, which then incorrectly leads to for_each_vma_range() iterating over stuff outside the range we care about. Fix this by storing the end value separately. Also fix the case where the range doesn't intersect with any vma, or if the vma itself doesn't extend the entire range, which must mean we have hole at the end. Both should result in an error, as per the previous behaviour. v2: Fix the cases where the range is empty, or if there's a hole at the end of the range Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/7247 Testcase: igt@gem_userptr_blits@probe Fixes: f683b9d61319 ("i915: use the VMA iterator") Reported-by: kernel test robot <oliver.sang@intel.com> Signed-off-by: Matthew Auld <matthew.auld@intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yu Zhao <yuzhao@google.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221028130635.465839-1-matthew.auld@intel.com (cherry picked from commit 6f7de35b50860c345babf8ed0aa0d75f9315eee4) Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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.