Description
In the Linux kernel, the following vulnerability has been resolved: fs/writeback: skip AS_NO_DATA_INTEGRITY mappings in wait_sb_inodes() Above the while() loop in wait_sb_inodes(), we document that we must wait for all pages under writeback for data integrity. Consequently, if a mapping, like fuse, traditionally does not have data integrity semantics, there is no need to wait at all; we can simply skip these inodes. This restores fuse back to prior behavior where syncs are no-ops. This fixes a user regression where if a system is running a faulty fuse server that does not reply to issued write requests, this causes wait_sb_inodes() to wait forever.
Product status
0c58a97f919c24fe4245015f4375a39ff05665b6 (git) before 3f4ed5e2b8f111553562507ad6202432c7c57731
0c58a97f919c24fe4245015f4375a39ff05665b6 (git) before f9a49aa302a05e91ca01f69031cb79a0ea33031f
6.16
Any version before 6.16
6.18.8 (semver)
6.19 (original_commit_for_fix)
References
git.kernel.org/...c/3f4ed5e2b8f111553562507ad6202432c7c57731
git.kernel.org/...c/f9a49aa302a05e91ca01f69031cb79a0ea33031f