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
..
acpi	ACPI: sleep: Avoid breaking S3 wakeup due to might_sleep()	2023-06-28 11:12:22 +02:00
asm-generic	asm-generic: qspinlock: fix queued_spin_value_unlocked() implementation	2023-12-20 17:00:24 +01:00
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	kunit: add macro to allow conditionally exposing static symbols to tests	2023-11-20 11:52:08 +01:00
kvm	KVM: arm64: vgic-v4: Make the doorbell request robust w.r.t preemption	2023-08-23 17:52:28 +02:00
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	media: cec: core: add adap_unconfigured() callback	2023-09-13 09:42:54 +02:00
memory	memory: renesas-rpc-if: Split-off private data from struct rpcif	2023-03-11 13:55:17 +01:00
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	RDMA/core: Fix umem iterator when PAGE_SIZE is greater then HCA pgsz	2023-12-13 18:39:15 +01:00
rv
scsi	scsi: sd: Fix system start for ATA devices	2023-12-08 08:51:14 +01:00
soc	net: mscc: ocelot: don't keep PTP configuration of all ports in single structure	2023-07-19 16:22:01 +02:00
sound	ASoC: SOF: Pass PCI SSID to machine driver	2023-11-28 17:06:58 +00:00
target	scsi: target: Fix multiple LUN_RESET handling	2023-05-11 23:03:19 +09:00
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	scsi: ufs: exynos: Fix DMA alignment for PAGE_SIZE != 4096	2023-03-10 09:33:15 +01:00
vdso
video
xen	xen: simplify evtchn_do_upcall() call maze	2023-12-08 08:51:20 +01:00