Xiao Ni 0c031fd37f md: Move alloc/free acct bioset in to personality ... bioset acct is only needed for raid0 and raid5. Therefore, md_run only allocates it for raid0 and raid5. However, this does not cover personality takeover, which may cause uninitialized bioset. For example, the following repro steps: mdadm -CR /dev/md0 -l1 -n2 /dev/loop0 /dev/loop1 mdadm --wait /dev/md0 mkfs.xfs /dev/md0 mdadm /dev/md0 --grow -l5 mount /dev/md0 /mnt causes panic like: [ 225.933939] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 225.934903] #PF: supervisor instruction fetch in kernel mode [ 225.935639] #PF: error_code(0x0010) - not-present page [ 225.936361] PGD 0 P4D 0 [ 225.936677] Oops: 0010 [#1] PREEMPT SMP DEBUG_PAGEALLOC KASAN PTI [ 225.937525] CPU: 27 PID: 1133 Comm: mount Not tainted 5.16.0-rc3+ #706 [ 225.938416] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-2.module_el8.4.0+547+a85d02ba 04/01/2014 [ 225.939922] RIP: 0010:0x0 [ 225.940289] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. [ 225.941196] RSP: 0018:ffff88815897eff0 EFLAGS: 00010246 [ 225.941897] RAX: 0000000000000000 RBX: 0000000000092800 RCX: ffffffff81370a39 [ 225.942813] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000092800 [ 225.943772] RBP: 1ffff1102b12fe04 R08: fffffbfff0b43c01 R09: fffffbfff0b43c01 [ 225.944807] R10: ffffffff85a1e007 R11: fffffbfff0b43c00 R12: ffff88810eaaaf58 [ 225.945757] R13: 0000000000000000 R14: ffff88810eaaafb8 R15: ffff88815897f040 [ 225.946709] FS: 00007ff3f2505080(0000) GS:ffff888fb5e00000(0000) knlGS:0000000000000000 [ 225.947814] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 225.948556] CR2: ffffffffffffffd6 CR3: 000000015aa5a006 CR4: 0000000000370ee0 [ 225.949537] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 225.950455] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 225.951414] Call Trace: [ 225.951787] <TASK> [ 225.952120] mempool_alloc+0xe5/0x250 [ 225.952625] ? mempool_resize+0x370/0x370 [ 225.953187] ? rcu_read_lock_sched_held+0xa1/0xd0 [ 225.953862] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 225.954464] ? sched_clock_cpu+0x15/0x120 [ 225.955019] ? find_held_lock+0xac/0xd0 [ 225.955564] bio_alloc_bioset+0x1ed/0x2a0 [ 225.956080] ? lock_downgrade+0x3a0/0x3a0 [ 225.956644] ? bvec_alloc+0xc0/0xc0 [ 225.957135] bio_clone_fast+0x19/0x80 [ 225.957651] raid5_make_request+0x1370/0x1b70 [ 225.958286] ? sched_clock_cpu+0x15/0x120 [ 225.958797] ? __lock_acquire+0x8b2/0x3510 [ 225.959339] ? raid5_get_active_stripe+0xce0/0xce0 [ 225.959986] ? lock_is_held_type+0xd8/0x130 [ 225.960528] ? rcu_read_lock_sched_held+0xa1/0xd0 [ 225.961135] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 225.961703] ? sched_clock_cpu+0x15/0x120 [ 225.962232] ? lock_release+0x27a/0x6c0 [ 225.962746] ? do_wait_intr_irq+0x130/0x130 [ 225.963302] ? lock_downgrade+0x3a0/0x3a0 [ 225.963815] ? lock_release+0x6c0/0x6c0 [ 225.964348] md_handle_request+0x342/0x530 [ 225.964888] ? set_in_sync+0x170/0x170 [ 225.965397] ? blk_queue_split+0x133/0x150 [ 225.965988] ? __blk_queue_split+0x8b0/0x8b0 [ 225.966524] ? submit_bio_checks+0x3b2/0x9d0 [ 225.967069] md_submit_bio+0x127/0x1c0 [...] Fix this by moving alloc/free of acct bioset to pers->run and pers->free. While we are on this, properly handle md_integrity_register() error in raid0_run(). Fixes: daee2024715d (md: check level before create and exit io_acct_set) Cc: stable@vger.kernel.org Acked-by: Guoqing Jiang <guoqing.jiang@linux.dev> Signed-off-by: Xiao Ni <xni@redhat.com> Signed-off-by: Song Liu <song@kernel.org>		2022-01-06 08:37:03 -08:00
..
accessibility
acpi	Merge branch 'acpi-properties'	2021-11-26 19:45:31 +01:00
amba
android	binder: fix test regression due to sender_euid change	2021-11-17 16:08:52 +01:00
ata	ata: libata-sata: Declare ata_ncq_sdev_attrs static	2021-11-18 14:34:25 +09:00
atm
auxdisplay	auxdisplay: cfag12864bfb: code indent should use tabs where possible	2021-10-22 00:13:16 +02:00
base	arch_topology: Fix missing clear cluster_cpumask in remove_cpu_topology()	2021-11-11 13:09:33 +01:00
bcma	pci-v5.16-changes	2021-11-06 14:36:12 -07:00
block	block/rnbd-clt-sysfs: use default_groups in kobj_type	2022-01-05 12:28:19 -07:00
bluetooth	TTY / Serial driver update for 5.16-rc1	2021-11-04 09:09:37 -07:00
bus	- Config updates for BMIPS platform	2021-11-13 09:11:33 -08:00
cdrom	block: remove GENHD_FL_EXT_DEVT	2021-11-29 06:38:35 -07:00
char	Char/Misc driver update for 5.16-rc1	2021-11-04 08:21:47 -07:00
clk	Devicetree fixes for v5.16, take 1:	2021-11-14 11:11:51 -08:00
clocksource	ARM:	2021-11-02 11:24:14 -07:00
comedi	comedi: dt9812: fix DMA buffers on stack	2021-10-30 10:54:47 +02:00
connector
counter	counter: Fix use-after-free race condition for events_queue_size write	2021-10-21 13:02:47 +02:00
cpufreq	cpufreq: intel_pstate: ITMT support for overclocked system	2021-11-23 14:11:18 +01:00
cpuidle	ARM: SoC drivers for 5.16	2021-11-03 17:00:52 -07:00
crypto	pci-v5.16-changes	2021-11-06 14:36:12 -07:00
cxl	cxl for v5.16	2021-11-08 11:49:48 -08:00
dax
dca
devfreq	Merge branches 'pm-opp' and 'pm-cpufreq'	2021-11-10 14:06:51 +01:00
dio
dma	dmaengine updates for v5.16-rc1	2021-11-10 11:47:55 -08:00
dma-buf	drm next/fixes for 5.16-rc1	2021-11-12 12:11:07 -08:00
edac	- amd64_edac: Add support for three-rank interleaving mode which is	2021-11-01 15:02:49 -07:00
eisa
extcon	extcon: usbc-tusb320: Add support for TUSB320L	2021-10-27 14:13:39 +09:00
firewire	SCSI misc on 20211105	2021-11-05 08:42:02 -07:00
firmware	firmware: smccc: Fix check for ARCH_SOC_ID not implemented	2021-11-22 11:42:59 +01:00
fpga
fsi	fsi: sbefifo: Use interruptible mutex locking	2021-10-22 09:54:33 +10:30
gnss
gpio	gpio: rockchip: needs GENERIC_IRQ_CHIP to fix build errors	2021-11-16 09:41:44 +01:00
gpu	xen: branch for v5.16-rc3	2021-11-26 09:54:13 -08:00
greybus
hid	HID: multitouch: Fix Iiyama ProLite T1931SAW (0eef:0001 again!)	2021-11-19 16:00:21 +01:00
hsi	HSI changes for the 5.16 series	2021-11-04 13:56:55 -07:00
hv	Drivers: hv: balloon: Use VMBUS_RING_SIZE() wrapper for dm_ring_size	2021-11-15 12:35:56 +00:00
hwmon	Merge branch 'akpm' (patches from Andrew)	2021-11-06 14:08:17 -07:00
hwspinlock
hwtracing	coresight: trbe: Work around write to out of range	2021-10-27 11:46:01 -06:00
i2c	i2c: virtio: disable timeout handling	2021-11-23 10:55:48 +01:00
i3c
idle
iio	chrome platform changes for 5.16	2021-11-10 11:36:43 -08:00
infiniband	RDMA/qib: rename copy_io to qib_copy_io	2021-11-29 06:41:29 -07:00
input	xen: add "not_essential" flag to struct xenbus_driver	2021-11-23 13:41:29 -06:00
interconnect
iommu	iommu/vt-d: Fix unmap_pages support	2021-11-26 22:54:47 +01:00
ipack
irqchip	irqchip/sifive-plic: Fixup EOI failed when masked	2021-11-12 16:09:51 +00:00
isdn
leds
macintosh	Merge branch 'akpm' (patches from Andrew)	2021-11-06 14:08:17 -07:00
mailbox	mailbox: imx: support i.MX8ULP S4 MU	2021-10-29 23:03:09 -05:00
mcb
md	md: Move alloc/free acct bioset in to personality	2022-01-06 08:37:03 -08:00
media	media fixes for v5.16-rc3	2021-11-22 14:58:57 -08:00
memory	memory: mtk-smi: Fix a null dereference for the ostd	2021-11-25 14:46:00 +01:00
memstick
message	pci-v5.16-changes	2021-11-06 14:36:12 -07:00
mfd	chrome platform changes for 5.16	2021-11-10 11:36:43 -08:00
misc	More ACPI updates for 5.16-rc1	2021-11-10 11:52:40 -08:00
mmc	block: remove the gendisk argument to blk_execute_rq	2021-11-29 06:41:29 -07:00
most	most: fix control-message timeouts	2021-10-26 19:12:01 +02:00
mtd	mtd_blkdevs: remove the sector out of range check in do_blktrans_request	2021-11-29 06:41:29 -07:00
mux	mux: add support for delay after muxing	2021-10-21 20:02:42 +01:00
net	vhost,virtio,vdpa: bugfixes	2021-11-28 11:58:52 -08:00
nfc	nfc: virtual_ncidev: change default device permissions	2021-11-26 11:14:31 -08:00
ntb
nubus
nvdimm	libnvdimm for v5.16	2021-11-10 10:56:02 -08:00
nvme	nvme: add 'iopolicy' module parameter	2021-12-23 11:22:46 +01:00
nvmem
of	Devicetree fixes for v5.16, take 1:	2021-11-14 11:11:51 -08:00
opp
parisc
parport
pci	A set of fixes for the interrupt subsystem:	2021-11-14 10:38:27 -08:00
pcmcia	Core:	2021-11-02 06:20:58 -07:00
perf	ACPI updates for 5.16-rc1	2021-11-02 15:58:39 -07:00
phy	Char/Misc driver update for 5.16-rc1	2021-11-04 08:21:47 -07:00
pinctrl	pinctrl: qcom: sm8350: Correct UFS and SDC offsets	2021-11-16 02:19:15 +01:00
platform	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid	2021-11-24 09:44:13 -08:00
pnp
power	power: supply: bq25890: Fix initial setting of the F_CONV_RATE field	2021-11-02 16:48:47 +01:00
powercap	powercap: DTPM: Fix suspend failure and kernel warning	2021-11-10 21:18:14 +01:00
pps
ps3
ptp	ptp: ocp: Fix a couple NULL vs IS_ERR() checks	2021-11-18 12:12:55 +00:00
pwm	pwm: vt8500: Rename pwm_busy_wait() to make it obviously driver-specific	2021-11-05 11:57:13 +01:00
rapidio	rapidio: avoid bogus __alloc_size warning	2021-11-06 13:30:33 -07:00
ras
regulator	- Remove Drivers	2021-11-08 12:07:52 -08:00
remoteproc
reset	ARM: SoC drivers for 5.16	2021-11-03 17:00:52 -07:00
rpmsg	remoteproc updates for v5.16	2021-11-10 09:07:26 -08:00
rtc	RTC for 5.16	2021-11-12 11:44:31 -08:00
s390	s390: replace snprintf in show functions with sysfs_emit	2021-11-16 12:29:19 +01:00
sbus
scsi	scsi: remove the gendisk argument to scsi_ioctl	2021-11-29 06:41:29 -07:00
sh
siox
slimbus
soc	Merge branch 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2021-11-10 16:15:54 -08:00
soundwire
spi	spi: Fixes for v5.16	2021-11-18 14:35:41 -08:00
spmi
ssb
staging	staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()	2021-11-17 14:08:57 +01:00
target	block: remove the gendisk argument to blk_execute_rq	2021-11-29 06:41:29 -07:00
tc
tee	optee: fix kfree NULL pointer	2021-11-16 14:41:23 +01:00
thermal	Merge branch 'thermal-int340x'	2021-11-18 20:40:28 +01:00
thunderbolt	thunderbolt: Changes for v5.16 merge window	2021-10-25 13:17:29 +02:00
tty	xen: flag hvc_xen to be not essential for system boot	2021-11-23 13:42:08 -06:00
uio	Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VM	2021-10-28 11:22:23 +00:00
usb	block: remove the ->rq_disk field in struct request	2021-11-29 06:41:29 -07:00
vdpa	vdpa_sim: avoid putting an uninitialized iova_domain	2021-11-24 19:00:29 -05:00
vfio
vhost	vhost-vdpa: clean irqs before reseting vdpa device	2021-11-24 19:00:28 -05:00
video	xen: branch for v5.16-rc3	2021-11-26 09:54:13 -08:00
virt
virtio	Revert "virtio_ring: validate used buffer length"	2021-11-24 18:47:27 -05:00
visorbus
vlynq
vme
w1
watchdog	linux-watchdog 5.16-rc1 tag	2021-11-10 09:41:22 -08:00
xen	xen: detect uninitialized xenbus in xenbus_init	2021-11-24 08:55:15 -06:00
zorro
Kconfig
Makefile