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Lizhi Xu f5c84eff63 loop: Add sanity check for read/write_iter 
Some file systems do not support read_iter/write_iter, such as selinuxfs
in this issue.
So before calling them, first confirm that the interface is supported and
then call it.

It is releavant in that vfs_iter_read/write have the check, and removal
of their used caused szybot to be able to hit this issue.

Fixes: f2fed441c6 ("loop: stop using vfs_iter__{read,write} for buffered I/O")
Reported-by: syzbot+6af973a3b8dfd2faefdc@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=6af973a3b8dfd2faefdc
Signed-off-by: Lizhi Xu <lizhi.xu@windriver.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20250428143626.3318717-1-lizhi.xu@windriver.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-05-05 07:18:05 -06:00
..
accel
Merge tag 'driver-core-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2025-04-01 11:02:03 -07:00
accessibility
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acpi
Merge tag 'libnvdimm-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2025-04-02 20:27:18 -07:00
amba
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android
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ata
Merge tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2025-04-01 10:06:52 -07:00
atm
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auxdisplay
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base
Merge tag 'cxl-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
2025-04-02 20:04:43 -07:00
bcma
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block
loop: Add sanity check for read/write_iter
2025-05-05 07:18:05 -06:00
bluetooth
Bluetooth: btnxpuart: Fix kernel panic during FW release
2025-03-25 15:22:17 -04:00
bus
Merge tag 'char-misc-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2025-04-01 11:26:08 -07:00
cache
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cdrom
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cdx
Merge branches 'apple/dart', 'arm/smmu/updates', 'arm/smmu/bindings', 'rockchip', 's390', 'core', 'intel/vt-d' and 'amd/amd-vi' into next
2025-03-20 09:11:09 +01:00
char
Merge tag 'char-misc-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2025-04-01 11:26:08 -07:00
clk
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux
2025-04-03 12:21:44 -07:00
clocksource
Merge tag 'mips_6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
2025-03-29 12:47:09 -07:00
comedi
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connector
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counter
Merge tag 'char-misc-6.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2025-04-02 18:03:34 -07:00
cpufreq
Merge tag 'pm-6.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2025-04-02 15:22:22 -07:00
cpuidle
Merge tag 'pmdomain-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
2025-03-25 20:40:51 -07:00
crypto
Merge tag 'v6.15-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2025-03-29 10:01:55 -07:00
cxl
Merge tag 'cxl-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
2025-04-02 20:04:43 -07:00
dax
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dca
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devfreq
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dio
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dma
Merge tag 'dmaengine-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
2025-04-01 12:57:14 -07:00
dma-buf
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dpll
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2025-03-20 21:38:01 +01:00
edac
Merge tag 'edac_updates_for_v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
2025-03-25 14:00:26 -07:00
eisa
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extcon
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firewire
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firmware
Merge tag 'cxl-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
2025-04-02 20:04:43 -07:00
fpga
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fsi
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fwctl
pds_fwctl: add rpc and query support
2025-03-21 20:57:55 -03:00
gnss
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gpio
Merge tag 'net-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2025-03-26 21:48:21 -07:00
gpu
Merge tag 'objtool-urgent-2025-04-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2025-04-02 10:30:10 -07:00
greybus
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hid
Merge branch 'for-6.15/wacom' into for-linus
2025-03-26 13:56:38 +01:00
hsi
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hte
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hv
Merge tag 'mm-stable-2025-03-30-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2025-04-01 09:29:18 -07:00
hwmon
Merge tag 'platform-drivers-x86-v6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
2025-03-26 09:54:40 -07:00
hwspinlock
hwspinlock: Remove unused hwspin_lock_get_id()
2025-03-21 17:12:04 -05:00
hwtracing
Merge tag 'char-misc-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2025-04-01 11:26:08 -07:00
i2c
Merge tag 'i2c-for-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2025-04-01 14:21:02 -07:00
i3c
i3c: Add NULL pointer check in i3c_master_queue_ibi()
2025-03-31 11:44:00 +02:00
idle
Merge tag 'pm-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2025-03-25 15:00:18 -07:00
iio
Merge tag 'char-misc-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2025-04-01 11:26:08 -07:00
infiniband
Merge tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2025-04-01 10:06:52 -07:00
input
Merge tag 'objtool-urgent-2025-04-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2025-04-02 10:30:10 -07:00
interconnect
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iommu
Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
2025-04-01 18:03:46 -07:00
ipack
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irqchip
Merge tag 'pci-v6.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
2025-03-28 19:36:53 -07:00
isdn
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leds
Merge tag 'leds-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds
2025-03-29 14:42:59 -07:00
macintosh
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mailbox
Merge tag 'mailbox-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox
2025-03-29 18:25:34 -07:00
mcb
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md
md/raid1: Add check for missing source disk in process_checks()
2025-04-16 18:06:37 +08:00
media
Merge tag 'objtool-urgent-2025-04-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2025-04-02 10:30:10 -07:00
memory
Merge tag 'soc-drivers-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
2025-03-27 09:05:55 -07:00
memstick
Merge tag 'for-6.15/block-20250322' of git://git.kernel.dk/linux
2025-03-26 18:08:55 -07:00
message
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2025-03-26 19:57:34 -07:00
mfd
Merge tag 'mfd-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
2025-03-29 14:33:13 -07:00
misc
Merge tag 'powerpc-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2025-04-02 12:35:49 -07:00
mmc
Merge tag 'soc-drivers-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
2025-03-27 09:05:55 -07:00
most
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mtd
Merge tag 'for-6.15/block-20250322' of git://git.kernel.dk/linux
2025-03-26 18:08:55 -07:00
mux
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net
Merge tag 'tty-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
2025-04-02 18:17:33 -07:00
nfc
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ntb
Revert "Merge tag 'irq-msi-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip"
2025-03-28 11:22:54 -07:00
nubus
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nvdimm
Merge tag 'libnvdimm-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2025-04-02 20:27:18 -07:00
nvme
nvmet-auth: always free derived key data
2025-04-30 08:09:09 -05:00
nvmem
net, treewide: define and use MAC_ADDR_STR_LEN
2025-03-19 19:17:58 +01:00
of
Merge tag 'devicetree-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
2025-03-29 11:23:16 -07:00
opp
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parisc
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parport
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pci
Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
2025-04-01 18:03:46 -07:00
pcmcia
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peci
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perf
Merge tag 'pci-v6.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
2025-03-28 19:36:53 -07:00
phy
Merge tag 'phy-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy
2025-04-01 12:47:11 -07:00
pinctrl
Merge tag 'pinctrl-v6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
2025-03-29 16:59:16 -07:00
platform
Merge tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2025-04-01 10:06:52 -07:00
pmdomain
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pnp
Merge tag 'staging-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
2025-04-02 18:09:17 -07:00
power
Merge tag 'i2c-for-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2025-04-01 14:21:02 -07:00
powercap
Merge tag 'pm-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2025-03-25 15:00:18 -07:00
pps
Merge tag 'char-misc-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2025-04-01 11:26:08 -07:00
ps3
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ptp
ptp: ocp: reject unsupported periodic output flags
2025-03-20 08:50:03 +01:00
pwm
Merge tag 'pinctrl-v6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
2025-03-29 16:59:16 -07:00
rapidio
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ras
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regulator
Merge tag 'objtool-urgent-2025-04-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2025-04-02 10:30:10 -07:00
remoteproc
remoteproc: qcom_q6v5_pas: Make single-PD handling more robust
2025-03-22 08:42:39 -05:00
reset
Merge tag 'rproc-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux
2025-03-29 17:18:50 -07:00
rpmsg
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rtc
Merge tag 'rtc-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
2025-04-03 15:31:14 -07:00
s390
Merge tag 'mm-stable-2025-03-30-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2025-04-01 09:29:18 -07:00
sbus
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scsi
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2025-03-26 19:57:34 -07:00
sh
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siox
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slimbus
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soc
Revert "Merge tag 'irq-msi-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip"
2025-03-28 11:22:54 -07:00
soundwire
Merge tag 'soundwire-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire
2025-04-01 12:43:13 -07:00
spi
Merge tag 'objtool-urgent-2025-04-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2025-04-02 10:30:10 -07:00
spmi
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ssb
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staging
Merge tag 'tty-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
2025-04-02 18:17:33 -07:00
target
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2025-03-26 19:57:34 -07:00
tc
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tee
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thermal
Merge tag 'thermal-6.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2025-04-01 16:51:44 -07:00
thunderbolt
Merge tag 'usb-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
2025-04-02 18:23:31 -07:00
tty
Merge tag 'tty-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
2025-04-02 18:17:33 -07:00
ufs
Revert "Merge tag 'irq-msi-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip"
2025-03-28 11:22:54 -07:00
uio
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usb
Merge tag 'usb-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
2025-04-02 18:23:31 -07:00
vdpa
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vfio
Merge tag 'vfio-v6.15-rc1' of https://github.com/awilliam/linux-vfio
2025-04-01 19:35:19 -07:00
vhost
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
2025-04-01 18:52:54 -07:00
video
Merge tag 'mm-stable-2025-03-30-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2025-04-01 09:29:18 -07:00
virt
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virtio
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
2025-04-01 18:52:54 -07:00
w1
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watchdog
Merge tag 'linux-watchdog-6.15-rc1' of git://www.linux-watchdog.org/linux-watchdog
2025-04-01 16:33:36 -07:00
xen
Merge tag 'mm-stable-2025-03-30-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2025-04-01 09:29:18 -07:00
zorro
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Kconfig
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Makefile
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