Linus Torvalds 478ad02d68 Disable FOP_DONTCACHE for now due to bugs ... This is kind of last-minute, but Al Viro reported that the new FOP_DONTCACHE flag causes memory corruption due to use-after-free issues. This was triggered by commit 974c5e6139 ("xfs: flag as supporting FOP_DONTCACHE"), but that is not the underlying bug - it is just the first user of the flag. Vlastimil Babka suspects the underlying problem stems from the folio_end_writeback() logic introduced in commit fb7d3bc414 ("mm/filemap: drop streaming/uncached pages when writeback completes"). The most straightforward fix would be to just revert the commit that exposed this, but Matthew Wilcox points out that other filesystems are also starting to enable the FOP_DONTCACHE logic, so this instead disables that bit globally for now. The fix will hopefully end up being trivial and we can just re-enable this logic after more testing, but until such a time we'll have to disable the new FOP_DONTCACHE flag. Reported-by: Al Viro <viro@zeniv.linux.org.uk> Link: https://lore.kernel.org/all/20250525083209.GS2023217@ZenIV/ Triggered-by: 974c5e6139 ("xfs: flag as supporting FOP_DONTCACHE") Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Matthew Wilcox <willy@infradead.org> Cc: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Cc: Christoph Hellwig <hch@lst.de> Cc: Darrick J. Wong <djwong@kernel.org> Cc: Christian Brauner <brauner@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2025-05-25 15:43:36 -07:00
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acpi	gcc-15: acpi: sprinkle random '__nonstring' crumbles around	2025-04-20 11:57:54 -07:00
asm-generic	…
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drm	drm/xe/ptl: Update the PTL pci id table	2025-05-22 20:54:15 -07:00
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linux	Disable FOP_DONTCACHE for now due to bugs	2025-05-25 15:43:36 -07:00
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net	ipsec-2025-05-21	2025-05-22 11:49:53 +02:00
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sound	ALSA: pcm: Fix race of buffer access at PCM OSS layer	2025-05-16 10:09:02 +02:00
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trace	for-6.15-rc5-tag	2025-05-06 08:19:09 -07:00
uapi	taskstats: fix struct taskstats breaks backward compatibility since version 15	2025-05-20 22:49:39 -07:00
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