Matthew Wilcox (Oracle) a6bd818213 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: 640d1930bef4 ("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 15:35:46 -08:00
..
acpi	ACPI: PM: Add acpi_device_fix_up_power_children() function	2023-12-03 07:33:07 +01:00
asm-generic	asm-generic: Fix 32 bit __generic_cmpxchg_local	2024-01-25 15:35:19 -08:00
clocksource
crypto	crypto: af_alg - Disallow multiple in-flight AIO requests	2024-01-25 15:35:16 -08:00
drm	drm/bridge: Fix typo in post_disable() description	2024-01-25 15:35:32 -08:00
dt-bindings	dt-bindings: clock: Update the videocc resets for sm8150	2024-01-25 15:35:37 -08:00
keys
kunit
kvm	KVM: arm64: timers: Correctly handle TGE flip with CNTPOFF_EL2	2023-10-12 16:55:21 +01:00
linux	block: Fix iterating over an empty bio with bio_for_each_folio_all	2024-01-25 15:35:46 -08:00
math-emu
media	media: ipu-bridge: increase sensor_name size	2023-11-28 17:19:46 +00:00
memory
misc
net	Bluetooth: Fix bogus check for re-auth no supported with non-ssp	2024-01-25 15:35:29 -08:00
pcmcia
ras
rdma	RDMA/core: Fix umem iterator when PAGE_SIZE is greater then HCA pgsz	2023-12-13 18:45:16 +01:00
rv
scsi	scsi: sd: Fix system start for ATA devices	2023-12-08 08:52:17 +01:00
soc	firmware: tegra: Add suspend hook and reset BPMP IPC early on resume	2023-11-20 11:59:16 +01:00
sound	ASoC: soc-dai: add flag to mute and unmute stream during trigger	2023-11-28 17:20:04 +00:00
target
trace	9p: prevent read overrun in protocol dump tracepoint	2024-01-01 12:42:43 +00:00
uapi	bpf: Add crosstask check to __bpf_get_stack	2024-01-25 15:35:19 -08:00
ufs
vdso
video	fbdev: stifb: Make the STI next font pointer a 32-bit signed offset	2023-11-28 17:19:58 +00:00
xen	arm/xen: remove lazy mode related definitions	2023-09-19 07:04:49 +02:00