Qian Cai ff9c607f03 iomap: fix WARN_ON_ONCE() from unprivileged users ... [ Upstream commit a805c11165 ] It is trivial to trigger a WARN_ON_ONCE(1) in iomap_dio_actor() by unprivileged users which would taint the kernel, or worse - panic if panic_on_warn or panic_on_taint is set. Hence, just convert it to pr_warn_ratelimited() to let users know their workloads are racing. Thank Dave Chinner for the initial analysis of the racing reproducers. Signed-off-by: Qian Cai <cai@lca.pw> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-10-29 09:58:06 +01:00
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Makefile	iomap: fix Invalid License ID	2019-07-25 11:05:11 +02:00
apply.c	iomap: move internal declarations into fs/iomap/	2019-07-17 07:21:02 -07:00
buffered-io.c	iomap: Clear page error before beginning a write	2020-10-29 09:57:39 +01:00
direct-io.c	iomap: fix WARN_ON_ONCE() from unprivileged users	2020-10-29 09:58:06 +01:00
fiemap.c	iomap: move internal declarations into fs/iomap/	2019-07-17 07:21:02 -07:00
seek.c	iomap: move internal declarations into fs/iomap/	2019-07-17 07:21:02 -07:00
swapfile.c	iomap: move internal declarations into fs/iomap/	2019-07-17 07:21:02 -07:00