On Mon, 10 Apr 2023 21:04:50 +0900, Tetsuo Handa wrote: > syzbot is reporting sleep in atomic context in SysV filesystem [1], for > sb_bread() is called with rw_spinlock held. > > A "write_lock(&pointers_lock) => read_lock(&pointers_lock) deadlock" bug > and a "sb_bread() with write_lock(&pointers_lock)" bug were introduced by > "Replace BKL for chain locking with sysvfs-private rwlock" in Linux 2.5.12. > > [...] Applied to the vfs.misc branch of the vfs/vfs.git tree. Patches in the vfs.misc branch should appear in linux-next soon. Please report any outstanding bugs that were missed during review in a new review to the original patch series allowing us to drop it. It's encouraged to provide Acked-bys and Reviewed-bys even though the patch has now been applied. If possible patch trailers will be updated. Note that commit hashes shown below are subject to change due to rebase, trailer updates or similar. If in doubt, please check the listed branch. tree: https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git branch: vfs.misc [1/1] sysv: don't call sb_bread() with pointers_lock held https://git.kernel.org/vfs/vfs/c/763f9ba5d63f
