Matthew Wilcox (Oracle) c6350b5cb7 block: Fix iterating over an empty bio with bio_for_each_folio_all ... commit 7bed6f3d08b7af27b7015da8dc3acf2b9c1f21d7 upstream. If the bio contains no data, bio_first_folio() calls page_folio() on a NULL pointer and oopses. Move the test that we've reached the end of the bio from bio_next_folio() to bio_first_folio(). Reported-by: syzbot+8b23309d5788a79d3eea@syzkaller.appspotmail.com Reported-by: syzbot+004c1e0fced2b4bc3dcc@syzkaller.appspotmail.com Fixes: 640d1930be ("block: Add bio_for_each_folio_all()") Cc: stable@vger.kernel.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Link: https://lore.kernel.org/r/20240116212959.3413014-1-willy@infradead.org [axboe: add unlikely() to error case] Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-01-25 15:27:42 -08:00
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acpi
asm-generic
clocksource
crypto	crypto: af_alg - Disallow multiple in-flight AIO requests	2024-01-25 15:27:21 -08:00
drm	drm/bridge: Fix typo in post_disable() description	2024-01-25 15:27:32 -08:00
dt-bindings	dt-bindings: clock: Update the videocc resets for sm8150	2024-01-25 15:27:36 -08:00
keys
kunit
kvm
linux	block: Fix iterating over an empty bio with bio_for_each_folio_all	2024-01-25 15:27:42 -08:00
math-emu
media
memory
misc
net	Bluetooth: Fix bogus check for re-auth no supported with non-ssp	2024-01-25 15:27:30 -08:00
pcmcia
ras
rdma
rv
scsi
soc
sound
target
trace	9p: prevent read overrun in protocol dump tracepoint	2024-01-01 12:39:05 +00:00
uapi	bpf: Add crosstask check to __bpf_get_stack	2024-01-25 15:27:24 -08:00
ufs
vdso
video
xen