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To be able to send auditing events to user space, we introduce a
generic dm-audit module. It provides helper functions to emit audit
events through the kernel audit subsystem. We claim the
AUDIT_DM_CTRL type=1336 and AUDIT_DM_EVENT type=1337 out of the
audit event messages range in the corresponding userspace api in
'include/uapi/linux/audit.h' for those events.
AUDIT_DM_CTRL is used to provide information about creation and
destruction of device mapper targets which are triggered by user space
admin control actions.
AUDIT_DM_EVENT is used to provide information about actual errors
during operation of the mapped device, showing e.g. integrity
violations in audit log.
Following commits to device mapper targets actually will make use of
this to emit those events in relevant cases.
The audit logs look like this if executing the following simple test:
# dd if=/dev/zero of=test.img bs=1M count=1024
# losetup -f test.img
# integritysetup -vD format --integrity sha256 -t 32 /dev/loop0
# integritysetup open -D /dev/loop0 --integrity sha256 integritytest
# integritysetup status integritytest
# integritysetup close integritytest
# integritysetup open -D /dev/loop0 --integrity sha256 integritytest
# integritysetup status integritytest
# dd if=/dev/urandom of=/dev/loop0 bs=512 count=1 seek=100000
# dd if=/dev/mapper/integritytest of=/dev/null
-------------------------
audit.log from auditd
type=UNKNOWN[1336] msg=audit(1630425039.363:184): module=integrity
op=ctr ppid=3807 pid=3819 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0
egid=0 sgid=0 fsgid=0 tty=pts2 ses=3 comm="integritysetup"
exe="/sbin/integritysetup" subj==unconfined dev=254:3
error_msg='success' res=1
type=UNKNOWN[1336] msg=audit(1630425039.471:185): module=integrity
op=dtr ppid=3807 pid=3819 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0
egid=0 sgid=0 fsgid=0 tty=pts2 ses=3 comm="integritysetup"
exe="/sbin/integritysetup" subj==unconfined dev=254:3
error_msg='success' res=1
type=UNKNOWN[1336] msg=audit(1630425039.611:186): module=integrity
op=ctr ppid=3807 pid=3819 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0
egid=0 sgid=0 fsgid=0 tty=pts2 ses=3 comm="integritysetup"
exe="/sbin/integritysetup" subj==unconfined dev=254:3
error_msg='success' res=1
type=UNKNOWN[1336] msg=audit(1630425054.475:187): module=integrity
op=dtr ppid=3807 pid=3819 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0
egid=0 sgid=0 fsgid=0 tty=pts2 ses=3 comm="integritysetup"
exe="/sbin/integritysetup" subj==unconfined dev=254:3
error_msg='success' res=1
type=UNKNOWN[1336] msg=audit(1630425073.171:191): module=integrity
op=ctr ppid=3807 pid=3883 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0
egid=0 sgid=0 fsgid=0 tty=pts2 ses=3 comm="integritysetup"
exe="/sbin/integritysetup" subj==unconfined dev=254:3
error_msg='success' res=1
type=UNKNOWN[1336] msg=audit(1630425087.239:192): module=integrity
op=dtr ppid=3807 pid=3902 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0
egid=0 sgid=0 fsgid=0 tty=pts2 ses=3 comm="integritysetup"
exe="/sbin/integritysetup" subj==unconfined dev=254:3
error_msg='success' res=1
type=UNKNOWN[1336] msg=audit(1630425093.755:193): module=integrity
op=ctr ppid=3807 pid=3906 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0
egid=0 sgid=0 fsgid=0 tty=pts2 ses=3 comm="integritysetup"
exe="/sbin/integritysetup" subj==unconfined dev=254:3
error_msg='success' res=1
type=UNKNOWN[1337] msg=audit(1630425112.119:194): module=integrity
op=integrity-checksum dev=254:3 sector=77480 res=0
type=UNKNOWN[1337] msg=audit(1630425112.119:195): module=integrity
op=integrity-checksum dev=254:3 sector=77480 res=0
type=UNKNOWN[1337] msg=audit(1630425112.119:196): module=integrity
op=integrity-checksum dev=254:3 sector=77480 res=0
type=UNKNOWN[1337] msg=audit(1630425112.119:197): module=integrity
op=integrity-checksum dev=254:3 sector=77480 res=0
type=UNKNOWN[1337] msg=audit(1630425112.119:198): module=integrity
op=integrity-checksum dev=254:3 sector=77480 res=0
type=UNKNOWN[1337] msg=audit(1630425112.119:199): module=integrity
op=integrity-checksum dev=254:3 sector=77480 res=0
type=UNKNOWN[1337] msg=audit(1630425112.119:200): module=integrity
op=integrity-checksum dev=254:3 sector=77480 res=0
type=UNKNOWN[1337] msg=audit(1630425112.119:201): module=integrity
op=integrity-checksum dev=254:3 sector=77480 res=0
type=UNKNOWN[1337] msg=audit(1630425112.119:202): module=integrity
op=integrity-checksum dev=254:3 sector=77480 res=0
type=UNKNOWN[1337] msg=audit(1630425112.119:203): module=integrity
op=integrity-checksum dev=254:3 sector=77480 res=0
Signed-off-by: Michael Weiß <michael.weiss@aisec.fraunhofer.de>
Signed-off-by: Paul Moore <paul@paul-moore.com> # fix audit.h numbering
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- fix two minor issues in the Xen privcmd driver plus a cleanup patch
for that driver
- fix multiple issues related to running as PVH guest and some related
earlyprintk fixes for other Xen guest types
- fix an issue introduced in 5.15 the Xen balloon driver
* tag 'for-linus-5.15b-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/balloon: fix cancelled balloon action
xen/x86: adjust data placement
x86/PVH: adjust function/data placement
xen/x86: hook up xen_banner() also for PVH
xen/x86: generalize preferred console model from PV to PVH Dom0
xen/x86: make "earlyprintk=xen" work for HVM/PVH DomU
xen/x86: allow "earlyprintk=xen" to work for PV Dom0
xen/x86: make "earlyprintk=xen" work better for PVH Dom0
xen/x86: allow PVH Dom0 without XEN_PV=y
xen/x86: prevent PVH type from getting clobbered
xen/privcmd: drop "pages" parameter from xen_remap_pfn()
xen/privcmd: fix error handling in mmap-resource processing
xen/privcmd: replace kcalloc() by kvcalloc() when allocating empty pages
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The function doesn't use it and all of its callers say in a comment that
their respective arguments are to be non-NULL only in auto-translated
mode. Since xen_remap_domain_mfn_array() isn't supposed to be used by
non-PV, drop the parameter there as well. It was bogusly passed as non-
NULL (PRIV_VMA_LOCKED) by its only caller anyway. For
xen_remap_domain_gfn_range(), otoh, it's not clear at all why this
wouldn't want / might not need to gain auto-translated support down the
road, so the parameter is retained there despite now remaining unused
(and the only caller passing NULL); correct a respective comment as
well.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/036ad8a2-46f9-ac3d-6219-bdc93ab9e10b@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic fixes from Arnd Bergmann:
"There is one build fix for Arm platforms that ended up impacting most
architectures because of the way the drivers/firmware Kconfig file is
wired up:
The CONFIG_QCOM_SCM dependency have caused a number of randconfig
regressions over time, and some still remain in v5.15-rc4. The fix we
agreed on in the end is to make this symbol selected by any driver
using it, and then building it even for non-Arm platforms with
CONFIG_COMPILE_TEST.
To make this work on all architectures, the drivers/firmware/Kconfig
file needs to be included for all architectures to make the symbol
itself visible.
In a separate discussion, we found that a sound driver patch that is
pending for v5.16 needs the same change to include this Kconfig file,
so the easiest solution seems to have my Kconfig rework included in
v5.15.
Finally, the branch also includes a small unrelated build fix for
NOMMU architectures"
Link: https://lore.kernel.org/all/20210928153508.101208f8@canb.auug.org.au/
Link: https://lore.kernel.org/all/20210928075216.4193128-1-arnd@kernel.org/
Link: https://lore.kernel.org/all/20211007151010.333516-1-arnd@kernel.org/
* tag 'asm-generic-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
asm-generic/io.h: give stub iounmap() on !MMU same prototype as elsewhere
qcom_scm: hide Kconfig symbol
firmware: include drivers/firmware/Kconfig unconditionally
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It made -Werror sad.
Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Now that SCM can be a loadable module, we have to add another
dependency to avoid link failures when ipa or adreno-gpu are
built-in:
aarch64-linux-ld: drivers/net/ipa/ipa_main.o: in function `ipa_probe':
ipa_main.c:(.text+0xfc4): undefined reference to `qcom_scm_is_available'
ld.lld: error: undefined symbol: qcom_scm_is_available
>>> referenced by adreno_gpu.c
>>> gpu/drm/msm/adreno/adreno_gpu.o:(adreno_zap_shader_load) in archive drivers/built-in.a
This can happen when CONFIG_ARCH_QCOM is disabled and we don't select
QCOM_MDT_LOADER, but some other module selects QCOM_SCM. Ideally we'd
use a similar dependency here to what we have for QCOM_RPROC_COMMON,
but that causes dependency loops from other things selecting QCOM_SCM.
This appears to be an endless problem, so try something different this
time:
- CONFIG_QCOM_SCM becomes a hidden symbol that nothing 'depends on'
but that is simply selected by all of its users
- All the stubs in include/linux/qcom_scm.h can go away
- arm-smccc.h needs to provide a stub for __arm_smccc_smc() to
allow compile-testing QCOM_SCM on all architectures.
- To avoid a circular dependency chain involving RESET_CONTROLLER
and PINCTRL_SUNXI, drop the 'select RESET_CONTROLLER' statement.
According to my testing this still builds fine, and the QCOM
platform selects this symbol already.
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Alex Elder <elder@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"This is a larger than normal update for Arm SoC specific code, most of
it in device trees, but also drivers and the omap and at91/sama7
platforms:
- There are four new entries to the MAINTAINERS file: Sven Peter and
Alyssa Rosenzweig for Apple M1, Romain Perier for Mstar/sigmastar,
and Vignesh Raghavendra for TI K3
- Build fixes to address randconfig warnings in sharpsl, dove, omap1,
and qcom platforms as well as the scmi and op-tee subsystems
- Regression fixes for missing CONFIG_FB and other options for
several defconfigs
- Several bug fixes for the newly added Microchip SAMA7 platform,
mostly regarding power management
- Missing SMP barriers to protect accesses to SCMI virtio device
- Regression fixes for TI OMAP, including a boot-time hang on am335x.
- Lots of bug fixes for NXP i.MX, mostly addressing incorrect
settings in devicetree files, and one revert for broken suspend.
- Fixes for ARM Juno/Vexpress devicetree files, addressing a couple
of schema warnings.
- Regression fixes for qualcomm SoC specific drivers and devicetree
files, reverting an mdt_loader change and at least pastially
reverting some of the 5.15 DTS changes, plus some minor bugfixes"
* tag 'armsoc-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (64 commits)
MAINTAINERS: Add Sven Peter as ARM/APPLE MACHINE maintainer
MAINTAINERS: Add Alyssa Rosenzweig as M1 reviewer
firmware: arm_scmi: Add proper barriers to scmi virtio device
firmware: arm_scmi: Simplify spinlocks in virtio transport
ARM: dts: omap3430-sdp: Fix NAND device node
bus: ti-sysc: Use CLKDM_NOAUTO for dra7 dcan1 for errata i893
ARM: sharpsl_param: work around -Wstringop-overread warning
ARM: defconfig: gemini: Restore framebuffer
ARM: dove: mark 'putc' as inline
ARM: omap1: move omap15xx local bus handling to usb.c
MAINTAINERS: Add Vignesh to TI K3 platform maintainership
arm64: dts: imx8m*-venice-gw7902: fix M2_RST# gpio
ARM: imx6: disable the GIC CPU interface before calling stby-poweroff sequence
arm64: dts: ls1028a: fix eSDHC2 node
arm64: dts: imx8mm-kontron-n801x-som: do not allow to switch off buck2
ARM: dts: at91: sama7g5ek: to not touch slew-rate for SDMMC pins
ARM: dts: at91: sama7g5ek: use proper slew-rate settings for GMACs
ARM: at91: pm: preload base address of controllers in tlb
ARM: at91: pm: group constants and addresses loading
ARM: dts: at91: sama7g5ek: add suspend voltage for ddr3l rail
...
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Commit 38225f2ef2f4 ("ARM/omap1: switch to use dma_direct_set_offset for
lbus DMA offsets") removed a lot of mach/memory.h, but left the USB
offset handling split into arch/arm/mach-omap1/usb.c and
drivers/usb/host/ohci-omap.c.
This can cause a randconfig build warning that now fails the build
with -Werror:
arch/arm/mach-omap1/usb.c:561:30: error: 'omap_1510_usb_ohci_nb' defined but not used [-Werror=unused-variable]
561 | static struct notifier_block omap_1510_usb_ohci_nb = {
| ^~~~~~~~~~~~~~~~~~~~~
Move it all into the platform file to get rid of the final
location that relies on mach/memory.h.
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20210927144118.2464881-1-arnd@kernel.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull netfslib, cachefiles and afs fixes from David Howells:
- Fix another couple of oopses in cachefiles tracing stemming from the
possibility of passing in a NULL object pointer
- Fix netfs_clear_unread() to set READ on the iov_iter so that source
it is passed to doesn't do the wrong thing (some drivers look at the
flag on iov_iter rather than other available information to determine
the direction)
- Fix afs_launder_page() to write back at the correct file position on
the server so as not to corrupt data
* tag 'misc-fixes-20211007' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Fix afs_launder_page() to set correct start file position
netfs: Fix READ/WRITE confusion when calling iov_iter_xarray()
cachefiles: Fix oops with cachefiles_cull() due to NULL object
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When cachefiles_cull() calls cachefiles_bury_object(), it passes
a NULL object. When this occurs, either trace_cachefiles_unlink()
or trace_cachefiles_rename() may oops due to the NULL object.
Check for NULL object in the tracepoint and if so, set debug_id
to MAX_UINT as was done in 2908f5e101e3.
The following oops was seen with xfstests generic/100.
BUG: kernel NULL pointer dereference, address: 0000000000000010
...
RIP: 0010:trace_event_raw_event_cachefiles_unlink+0x4e/0xa0 [cachefiles]
...
Call Trace:
cachefiles_bury_object+0x242/0x430 [cachefiles]
? __vfs_removexattr_locked+0x10f/0x150
? vfs_removexattr+0x51/0xd0
cachefiles_cull+0x84/0x120 [cachefiles]
cachefiles_daemon_cull+0xd1/0x120 [cachefiles]
cachefiles_daemon_write+0x158/0x190 [cachefiles]
vfs_write+0xbc/0x260
ksys_write+0x4f/0xc0
do_syscall_64+0x3b/0x90
The following oops was seen with xfstests generic/290.
BUG: kernel NULL pointer dereference, address: 0000000000000010
...
RIP: 0010:trace_event_raw_event_cachefiles_rename+0x54/0xa0 [cachefiles]
...
Call Trace:
cachefiles_bury_object+0x35c/0x430 [cachefiles]
cachefiles_cull+0x84/0x120 [cachefiles]
cachefiles_daemon_cull+0xd1/0x120 [cachefiles]
cachefiles_daemon_write+0x158/0x190 [cachefiles]
vfs_write+0xbc/0x260
ksys_write+0x4f/0xc0
do_syscall_64+0x3b/0x90
Fixes: 2908f5e101e3 ("fscache: Add a cookie debug ID and use that in traces")
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://listman.redhat.com/archives/linux-cachefs/2021-October/msg00009.html
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from xfrm, bpf, netfilter, and wireless.
Current release - regressions:
- xfrm: fix XFRM_MSG_MAPPING ABI breakage caused by inserting a new
value in the middle of an enum
- unix: fix an issue in unix_shutdown causing the other end
read/write failures
- phy: mdio: fix memory leak
Current release - new code bugs:
- mlx5e: improve MQPRIO resiliency against bad configs
Previous releases - regressions:
- bpf: fix integer overflow leading to OOB access in map element
pre-allocation
- stmmac: dwmac-rk: fix ethernet on rk3399 based devices
- netfilter: conntrack: fix boot failure with
nf_conntrack.enable_hooks=1
- brcmfmac: revert using ISO3166 country code and 0 rev as fallback
- i40e: fix freeing of uninitialized misc IRQ vector
- iavf: fix double unlock of crit_lock
Previous releases - always broken:
- bpf, arm: fix register clobbering in div/mod implementation
- netfilter: nf_tables: correct issues in netlink rule change event
notifications
- dsa: tag_dsa: fix mask for trunked packets
- usb: r8152: don't resubmit rx immediately to avoid soft lockup on
device unplug
- i40e: fix endless loop under rtnl if FW fails to correctly respond
to capability query
- mlx5e: fix rx checksum offload coexistence with ipsec offload
- mlx5: force round second at 1PPS out start time and allow it only
in supported clock modes
- phy: pcs: xpcs: fix incorrect CL37 AN sequence, EEE disable
sequence
Misc:
- xfrm: slightly rejig the new policy uAPI to make it less cryptic"
* tag 'net-5.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (66 commits)
net: prefer socket bound to interface when not in VRF
iavf: fix double unlock of crit_lock
i40e: Fix freeing of uninitialized misc IRQ vector
i40e: fix endless loop under rtnl
dt-bindings: net: dsa: marvell: fix compatible in example
ionic: move filter sync_needed bit set
gve: report 64bit tx_bytes counter from gve_handle_report_stats()
gve: fix gve_get_stats()
rtnetlink: fix if_nlmsg_stats_size() under estimation
gve: Properly handle errors in gve_assign_qpl
gve: Avoid freeing NULL pointer
gve: Correct available tx qpl check
unix: Fix an issue in unix_shutdown causing the other end read/write failures
net: stmmac: trigger PCS EEE to turn off on link down
net: pcs: xpcs: fix incorrect steps on disable EEE
netlink: annotate data races around nlk->bound
net: pcs: xpcs: fix incorrect CL37 AN sequence
net: sfp: Fix typo in state machine debug string
net/sched: sch_taprio: properly cancel timer from taprio_destroy()
net: bridge: fix under estimation in br_get_linkxstats_size()
...
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ipsec
Steffen Klassert says:
====================
pull request (net): ipsec 2021-10-07
1) Fix a sysbot reported shift-out-of-bounds in xfrm_get_default.
From Pavel Skripkin.
2) Fix XFRM_MSG_MAPPING ABI breakage. The new XFRM_MSG_MAPPING
messages were accidentally not paced at the end.
Fix by Eugene Syromiatnikov.
3) Fix the uapi for the default policy, use explicit field and macros
and make it accessible to userland.
From Nicolas Dichtel.
4) Fix a missing rcu lock in xfrm_notify_userpolicy().
From Nicolas Dichtel.
Please pull or let me know if there are problems.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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>From a userland POV, this API was based on some magic values:
- dirmask and action were bitfields but meaning of bits
(XFRM_POL_DEFAULT_*) are not exported;
- action is confusing, if a bit is set, does it mean drop or accept?
Let's try to simplify this uapi by using explicit field and macros.
Fixes: 2d151d39073a ("xfrm: Add possibility to set the default to block if we have no policy")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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Commit 2d151d39073a ("xfrm: Add possibility to set the default to block
if we have no policy") broke ABI by changing the value of the XFRM_MSG_MAPPING
enum item, thus also evading the build-time check
in security/selinux/nlmsgtab.c:selinux_nlmsg_lookup for presence of proper
security permission checks in nlmsg_xfrm_perms. Fix it by placing
XFRM_MSG_SETDEFAULT/XFRM_MSG_GETDEFAULT to the end of the enum, right before
__XFRM_MSG_MAX, and updating the nlmsg_xfrm_perms accordingly.
Fixes: 2d151d39073a ("xfrm: Add possibility to set the default to block if we have no policy")
References: https://lore.kernel.org/netdev/20210901151402.GA2557@altlinux.org/
Signed-off-by: Eugene Syromiatnikov <esyr@redhat.com>
Acked-by: Antony Antony <antony.antony@secunet.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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Andrew points out that eth_hw_addr_set() replaces memcpy()
calls so we can't use ether_addr_copy() which assumes
both arguments are 2-bytes aligned.
Reported-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pablo Neira Ayuso says:
====================
Netfilter fixes for net (v2)
The following patchset contains Netfilter fixes for net:
1) Move back the defrag users fields to the global netns_nf area.
Kernel fails to boot if conntrack is builtin and kernel is booted
with: nf_conntrack.enable_hooks=1. From Florian Westphal.
2) Rule event notification is missing relevant context such as
the position handle and the NLM_F_APPEND flag.
3) Rule replacement is expanded to add + delete using the existing
rule handle, reverse order of this operation so it makes sense
from rule notification standpoint.
4) Propagate to userspace the NLM_F_CREATE and NLM_F_EXCL flags
from the rule notification path.
Patches #2, #3 and #4 are used by 'nft monitor' and 'iptables-monitor'
userspace utilities which are not correctly representing the following
operations through netlink notifications:
- rule insertions
- rule addition/insertion from position handle
- create table/chain/set/map/flowtable/...
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Include the NLM_F_CREATE and NLM_F_EXCL flags in netlink event
notifications, otherwise userspace cannot distiguish between create and
add commands.
Fixes: 96518518cc41 ("netfilter: add nftables")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This is a revert of
7b1957b049 ("netfilter: nf_defrag_ipv4: use net_generic infra")
and a partial revert of
8b0adbe3e3 ("netfilter: nf_defrag_ipv6: use net_generic infra").
If conntrack is builtin and kernel is booted with:
nf_conntrack.enable_hooks=1
.... kernel will fail to boot due to a NULL deref in
nf_defrag_ipv4_enable(): Its called before the ipv4 defrag initcall is
made, so net_generic() returns NULL.
To resolve this, move the user refcount back to struct net so calls
to those functions are possible even before their initcalls have run.
Fixes: 7b1957b04956 ("netfilter: nf_defrag_ipv4: use net_generic infra")
Fixes: 8b0adbe3e38d ("netfilter: nf_defrag_ipv6: use net_generic infra").
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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When ocelot_flower.c calls ocelot_vcap_filter_add(), the filter has a
given filter->id.cookie. This filter is added to the block->rules list.
However, when ocelot_flower.c calls ocelot_vcap_block_find_filter_by_id()
which passes the cookie as argument, the filter is never found by
filter->id.cookie when searching through the block->rules list.
This is unsurprising, since the filter->id.cookie is an unsigned long,
but the cookie argument provided to ocelot_vcap_block_find_filter_by_id()
is a signed int, and the comparison fails.
Fixes: 50c6cc5b9283 ("net: mscc: ocelot: store a namespaced VCAP filter ID")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20210930125330.2078625-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Fixes following warning:
include/net/sock.h:533: warning: Function parameter or member 'sk_peer_lock' not described in 'sock'
Fixes: 35306eb23814 ("af_unix: fix races in sk_peer_pid and sk_peer_cred accesses")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://lore.kernel.org/r/20211001164622.58520-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv fixes from Wei Liu:
- Replace uuid.h with types.h in a header (Andy Shevchenko)
- Avoid sleeping in atomic context in PCI driver (Long Li)
- Avoid sending IPI to self when it shouldn't (Vitaly Kuznetsov)
* tag 'hyperv-fixes-signed-20211007' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
x86/hyperv: Avoid erroneously sending IPI to 'self'
hyper-v: Replace uuid.h with types.h
PCI: hv: Fix sleep while in non-sleep context when removing child devices from the bus
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There is no user of anything in uuid.h in the hyperv.h. Replace it with
more appropriate types.h.
Fixes: f081bbb3fd03 ("hyper-v: Remove internal types from UAPI header")
Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Link: https://lore.kernel.org/r/20211001135544.1823-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are some driver core and kernfs fixes for reported issues for
5.15-rc4. These fixes include:
- kernfs positive dentry bugfix
- debugfs_create_file_size error path fix
- cpumask sysfs file bugfix to preserve the user/kernel abi (has been
reported multiple times.)
- devlink fixes for mdiobus devices as reported by the subsystem
maintainers.
Also included in here are some devlink debugging changes to make it
easier for people to report problems when asked. They have already
helped with the mdiobus and other subsystems reporting issues.
All of these have been linux-next for a while with no reported issues"
* tag 'driver-core-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
kernfs: also call kernfs_set_rev() for positive dentry
driver core: Add debug logs when fwnode links are added/deleted
driver core: Create __fwnode_link_del() helper function
driver core: Set deferred probe reason when deferred by driver core
net: mdiobus: Set FWNODE_FLAG_NEEDS_CHILD_BOUND_ON_ADD for mdiobus parents
driver core: fw_devlink: Add support for FWNODE_FLAG_NEEDS_CHILD_BOUND_ON_ADD
driver core: fw_devlink: Improve handling of cyclic dependencies
cpumask: Omit terminating null byte in cpumap_print_{list,bitmask}_to_buf
debugfs: debugfs_create_file_size(): use IS_ERR to check for error
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If a parent device is also a supplier to a child device, fw_devlink=on by
design delays the probe() of the child device until the probe() of the
parent finishes successfully.
However, some drivers of such parent devices (where parent is also a
supplier) expect the child device to finish probing successfully as soon as
they are added using device_add() and before the probe() of the parent
device has completed successfully. One example of such a case is discussed
in the link mentioned below.
Add a flag to make fw_devlink=on not enforce these supplier-consumer
relationships, so these drivers can continue working.
Link: https://lore.kernel.org/netdev/CAGETcx_uj0V4DChME-gy5HGKTYnxLBX=TH2rag29f_p=UcG+Tg@mail.gmail.com/
Fixes: ea718c699055 ("Revert "Revert "driver core: Set fw_devlink=on by default""")
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210915170940.617415-3-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The changes in the patch series [1] introduced a terminating null byte
when reading from cpulist or cpumap sysfs files, for example:
$ xxd /sys/devices/system/node/node0/cpulist
00000000: 302d 310a 00 0-1..
Before this change, the output looked as follows:
$ xxd /sys/devices/system/node/node0/cpulist
00000000: 302d 310a 0-1.
Fix this regression by excluding the terminating null byte from the
returned length in cpumap_print_list_to_buf and
cpumap_print_bitmask_to_buf.
[1] https://lore.kernel.org/all/20210806110251.560-1-song.bao.hua@hisilicon.com/
Fixes: 1fae562983ca ("cpumask: introduce cpumap_print_list/bitmask_to_buf to support large bitmask and list")
Acked-by: Barry Song <song.bao.hua@hisilicon.com>
Acked-by: Yury Norov <yury.norov@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Link: https://lore.kernel.org/r/20210916222705.13554-1-tklauser@distanz.ch
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Borislav Petkov:
- Tell the compiler to always inline is_percpu_thread()
- Make sure tunable_scaling buffer is null-terminated after an update
in sysfs
- Fix LTP named regression due to cgroup list ordering
* tag 'sched_urgent_for_v5.15_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Always inline is_percpu_thread()
sched/fair: Null terminate buffer when updating tunable_scaling
sched/fair: Add ancestors of unthrottled undecayed cfs_rq
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vmlinux.o: warning: objtool: check_preemption_disabled()+0x81: call to is_percpu_thread() leaves .noinstr.text section
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210928084218.063371959@infradead.org
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Borislav Petkov:
- Make sure the destroy callback is reset when a event initialization
fails
- Update the event constraints for Icelake
- Make sure the active time of an event is updated even for inactive
events
* tag 'perf_urgent_for_v5.15_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: fix userpage->time_enabled of inactive events
perf/x86/intel: Update event constraints for ICX
perf/x86: Reset destroy callback on event init failure
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Users of rdpmc rely on the mmapped user page to calculate accurate
time_enabled. Currently, userpage->time_enabled is only updated when the
event is added to the pmu. As a result, inactive event (due to counter
multiplexing) does not have accurate userpage->time_enabled. This can
be reproduced with something like:
/* open 20 task perf_event "cycles", to create multiplexing */
fd = perf_event_open(); /* open task perf_event "cycles" */
userpage = mmap(fd); /* use mmap and rdmpc */
while (true) {
time_enabled_mmap = xxx; /* use logic in perf_event_mmap_page */
time_enabled_read = read(fd).time_enabled;
if (time_enabled_mmap > time_enabled_read)
BUG();
}
Fix this by updating userpage for inactive events in merge_sched_in.
Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reported-and-tested-by: Lucian Grijincu <lucian@fb.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210929194313.2398474-1-songliubraving@fb.com
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In cachefiles_mark_object_buried, the dentry in question may not have an
owner, and thus our cachefiles_object pointer may be NULL when calling
the tracepoint, in which case we will also not have a valid debug_id to
print in the tracepoint.
Check for NULL object in the tracepoint and if so, just set debug_id to
MAX_UINT as was done in 2908f5e101e3 ("fscache: Add a cookie debug ID
and use that in traces").
This fixes the following oops:
FS-Cache: Cache "mycache" added (type cachefiles)
CacheFiles: File cache on vdc registered
...
Workqueue: fscache_object fscache_object_work_func [fscache]
RIP: 0010:trace_event_raw_event_cachefiles_mark_buried+0x4e/0xa0 [cachefiles]
....
Call Trace:
cachefiles_mark_object_buried+0xa5/0xb0 [cachefiles]
cachefiles_bury_object+0x270/0x430 [cachefiles]
cachefiles_walk_to_object+0x195/0x9c0 [cachefiles]
cachefiles_lookup_object+0x5a/0xc0 [cachefiles]
fscache_look_up_object+0xd7/0x160 [fscache]
fscache_object_work_func+0xb2/0x340 [fscache]
process_one_work+0x1f1/0x390
worker_thread+0x53/0x3e0
kthread+0x127/0x150
Fixes: 2908f5e101e3 ("fscache: Add a cookie debug ID and use that in traces")
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-cachefs@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes, including fixes from mac80211, netfilter and bpf.
Current release - regressions:
- bpf, cgroup: assign cgroup in cgroup_sk_alloc when called from
interrupt
- mdio: revert mechanical patches which broke handling of optional
resources
- dev_addr_list: prevent address duplication
Previous releases - regressions:
- sctp: break out if skb_header_pointer returns NULL in sctp_rcv_ootb
(NULL deref)
- Revert "mac80211: do not use low data rates for data frames with no
ack flag", fixing broadcast transmissions
- mac80211: fix use-after-free in CCMP/GCMP RX
- netfilter: include zone id in tuple hash again, minimize collisions
- netfilter: nf_tables: unlink table before deleting it (race -> UAF)
- netfilter: log: work around missing softdep backend module
- mptcp: don't return sockets in foreign netns
- sched: flower: protect fl_walk() with rcu (race -> UAF)
- ixgbe: fix NULL pointer dereference in ixgbe_xdp_setup
- smsc95xx: fix stalled rx after link change
- enetc: fix the incorrect clearing of IF_MODE bits
- ipv4: fix rtnexthop len when RTA_FLOW is present
- dsa: mv88e6xxx: 6161: use correct MAX MTU config method for this
SKU
- e100: fix length calculation & buffer overrun in ethtool::get_regs
Previous releases - always broken:
- mac80211: fix using stale frag_tail skb pointer in A-MSDU tx
- mac80211: drop frames from invalid MAC address in ad-hoc mode
- af_unix: fix races in sk_peer_pid and sk_peer_cred accesses (race
-> UAF)
- bpf, x86: Fix bpf mapping of atomic fetch implementation
- bpf: handle return value of BPF_PROG_TYPE_STRUCT_OPS prog
- netfilter: ip6_tables: zero-initialize fragment offset
- mhi: fix error path in mhi_net_newlink
- af_unix: return errno instead of NULL in unix_create1() when over
the fs.file-max limit
Misc:
- bpf: exempt CAP_BPF from checks against bpf_jit_limit
- netfilter: conntrack: make max chain length random, prevent
guessing buckets by attackers
- netfilter: nf_nat_masquerade: make async masq_inet6_event handling
generic, defer conntrack walk to work queue (prevent hogging RTNL
lock)"
* tag 'net-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (77 commits)
af_unix: fix races in sk_peer_pid and sk_peer_cred accesses
net: stmmac: fix EEE init issue when paired with EEE capable PHYs
net: dev_addr_list: handle first address in __hw_addr_add_ex
net: sched: flower: protect fl_walk() with rcu
net: introduce and use lock_sock_fast_nested()
net: phy: bcm7xxx: Fixed indirect MMD operations
net: hns3: disable firmware compatible features when uninstall PF
net: hns3: fix always enable rx vlan filter problem after selftest
net: hns3: PF enable promisc for VF when mac table is overflow
net: hns3: fix show wrong state when add existing uc mac address
net: hns3: fix mixed flag HCLGE_FLAG_MQPRIO_ENABLE and HCLGE_FLAG_DCB_ENABLE
net: hns3: don't rollback when destroy mqprio fail
net: hns3: remove tc enable checking
net: hns3: do not allow call hns3_nic_net_open repeatedly
ixgbe: Fix NULL pointer dereference in ixgbe_xdp_setup
net: bridge: mcast: Associate the seqcount with its protecting lock.
net: mdio-ipq4019: Fix the error for an optional regs resource
net: hns3: fix hclge_dbg_dump_tm_pg() stack usage
net: mdio: mscc-miim: Fix the mdio controller
af_unix: Return errno instead of NULL in unix_create1().
...
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Jann Horn reported that SO_PEERCRED and SO_PEERGROUPS implementations
are racy, as af_unix can concurrently change sk_peer_pid and sk_peer_cred.
In order to fix this issue, this patch adds a new spinlock that needs
to be used whenever these fields are read or written.
Jann also pointed out that l2cap_sock_get_peer_pid_cb() is currently
reading sk->sk_peer_pid which makes no sense, as this field
is only possibly set by AF_UNIX sockets.
We will have to clean this in a separate patch.
This could be done by reverting b48596d1dc25 "Bluetooth: L2CAP: Add get_peer_pid callback"
or implementing what was truly expected.
Fixes: 109f6e39fa07 ("af_unix: Allow SO_PEERCRED to work across namespaces.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Jann Horn <jannh@google.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Syzkaller reported a false positive deadlock involving
the nl socket lock and the subflow socket lock:
MPTCP: kernel_bind error, err=-98
============================================
WARNING: possible recursive locking detected
5.15.0-rc1-syzkaller #0 Not tainted
--------------------------------------------
syz-executor998/6520 is trying to acquire lock:
ffff8880795718a0 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_close+0x267/0x7b0 net/mptcp/protocol.c:2738
but task is already holding lock:
ffff8880787c8c60 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1612 [inline]
ffff8880787c8c60 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_close+0x23/0x7b0 net/mptcp/protocol.c:2720
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(k-sk_lock-AF_INET);
lock(k-sk_lock-AF_INET);
*** DEADLOCK ***
May be due to missing lock nesting notation
3 locks held by syz-executor998/6520:
#0: ffffffff8d176c50 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8d176d08 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8d176d08 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
#2: ffff8880787c8c60 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1612 [inline]
#2: ffff8880787c8c60 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_close+0x23/0x7b0 net/mptcp/protocol.c:2720
stack backtrace:
CPU: 1 PID: 6520 Comm: syz-executor998 Not tainted 5.15.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_deadlock_bug kernel/locking/lockdep.c:2944 [inline]
check_deadlock kernel/locking/lockdep.c:2987 [inline]
validate_chain kernel/locking/lockdep.c:3776 [inline]
__lock_acquire.cold+0x149/0x3ab kernel/locking/lockdep.c:5015
lock_acquire kernel/locking/lockdep.c:5625 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590
lock_sock_fast+0x36/0x100 net/core/sock.c:3229
mptcp_close+0x267/0x7b0 net/mptcp/protocol.c:2738
inet_release+0x12e/0x280 net/ipv4/af_inet.c:431
__sock_release net/socket.c:649 [inline]
sock_release+0x87/0x1b0 net/socket.c:677
mptcp_pm_nl_create_listen_socket+0x238/0x2c0 net/mptcp/pm_netlink.c:900
mptcp_nl_cmd_add_addr+0x359/0x930 net/mptcp/pm_netlink.c:1170
genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:731
genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]
genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:792
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504
genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340
netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:724
sock_no_sendpage+0x101/0x150 net/core/sock.c:2980
kernel_sendpage.part.0+0x1a0/0x340 net/socket.c:3504
kernel_sendpage net/socket.c:3501 [inline]
sock_sendpage+0xe5/0x140 net/socket.c:1003
pipe_to_sendpage+0x2ad/0x380 fs/splice.c:364
splice_from_pipe_feed fs/splice.c:418 [inline]
__splice_from_pipe+0x43e/0x8a0 fs/splice.c:562
splice_from_pipe fs/splice.c:597 [inline]
generic_splice_sendpage+0xd4/0x140 fs/splice.c:746
do_splice_from fs/splice.c:767 [inline]
direct_splice_actor+0x110/0x180 fs/splice.c:936
splice_direct_to_actor+0x34b/0x8c0 fs/splice.c:891
do_splice_direct+0x1b3/0x280 fs/splice.c:979
do_sendfile+0xae9/0x1240 fs/read_write.c:1249
__do_sys_sendfile64 fs/read_write.c:1314 [inline]
__se_sys_sendfile64 fs/read_write.c:1300 [inline]
__x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1300
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f215cb69969
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc96bb3868 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f215cbad072 RCX: 00007f215cb69969
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005
RBP: 0000000000000000 R08: 00007ffc96bb3a08 R09: 00007ffc96bb3a08
R10: 0000000100000002 R11: 0000000000000246 R12: 00007ffc96bb387c
R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000
the problem originates from uncorrect lock annotation in the mptcp
code and is only visible since commit 2dcb96bacce3 ("net: core: Correct
the sock::sk_lock.owned lockdep annotations"), but is present since
the port-based endpoint support initial implementation.
This patch addresses the issue introducing a nested variant of
lock_sock_fast() and using it in the relevant code path.
Fixes: 1729cf186d8a ("mptcp: create the listening socket for new port")
Fixes: 2dcb96bacce3 ("net: core: Correct the sock::sk_lock.owned lockdep annotations")
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Reported-and-tested-by: syzbot+1dd53f7a89b299d59eaf@syzkaller.appspotmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Daniel Borkmann says:
====================
pull-request: bpf 2021-09-28
The following pull-request contains BPF updates for your *net* tree.
We've added 10 non-merge commits during the last 14 day(s) which contain
a total of 11 files changed, 139 insertions(+), 53 deletions(-).
The main changes are:
1) Fix MIPS JIT jump code emission for too large offsets, from Piotr Krysiuk.
2) Fix x86 JIT atomic/fetch emission when dst reg maps to rax, from Johan Almbladh.
3) Fix cgroup_sk_alloc corner case when called from interrupt, from Daniel Borkmann.
4) Fix segfault in libbpf's linker for objects without BTF, from Kumar Kartikeya Dwivedi.
5) Fix bpf_jit_charge_modmem for applications with CAP_BPF, from Lorenz Bauer.
6) Fix return value handling for struct_ops BPF programs, from Hou Tao.
7) Various fixes to BPF selftests, from Jiri Benc.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
,
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Currently if a function ptr in struct_ops has a return value, its
caller will get a random return value from it, because the return
value of related BPF_PROG_TYPE_STRUCT_OPS prog is just dropped.
So adding a new flag BPF_TRAMP_F_RET_FENTRY_RET to tell bpf trampoline
to save and return the return value of struct_ops prog if ret_size of
the function ptr is greater than 0. Also restricting the flag to be
used alone.
Fixes: 85d33df357b6 ("bpf: Introduce BPF_MAP_TYPE_STRUCT_OPS")
Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20210914023351.3664499-1-houtao1@huawei.com
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes berg says:
====================
Some fixes:
* potential use-after-free in CCMP/GCMP RX processing
* potential use-after-free in TX A-MSDU processing
* revert to low data rates for no-ack as the commit
broke other things
* limit VHT MCS/NSS in radiotap injection
* drop frames with invalid addresses in IBSS mode
* check rhashtable_init() return value in mesh
* fix potentially unaligned access in mesh
* fix late beacon hrtimer handling in hwsim (syzbot)
* fix documentation for PTK0 rekeying
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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@IEEE80211_KEY_FLAG_GENERATE_IV setting is irrelevant for RX.
Move the requirement to the correct section in the PTK0 rekey
documentation.
Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
Link: https://lore.kernel.org/r/20210924200514.7936-1-alexander@wetzel-home.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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We observed below report when playing with netlink sock:
UBSAN: shift-out-of-bounds in net/sched/sch_api.c:580:10
shift exponent 249 is too large for 32-bit type
CPU: 0 PID: 685 Comm: a.out Not tainted
Call Trace:
dump_stack_lvl+0x8d/0xcf
ubsan_epilogue+0xa/0x4e
__ubsan_handle_shift_out_of_bounds+0x161/0x182
__qdisc_calculate_pkt_len+0xf0/0x190
__dev_queue_xmit+0x2ed/0x15b0
it seems like kernel won't check the stab log value passing from
user, and will use the insane value later to calculate pkt_len.
This patch just add a check on the size/cell_log to avoid insane
calculation.
Reported-by: Abaci <abaci@linux.alibaba.com>
Signed-off-by: Michael Wang <yun.wang@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Multipath RTA_FLOW is embedded in nexthop. Dump it in fib_add_nexthop()
to get the length of rtnexthop correct.
Fixes: b0f60193632e ("ipv4: Refactor nexthop attributes in fib_dump_info")
Signed-off-by: Xiao Liang <shaw.leon@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This became a slightly large collection of changes, partly because
I've been off in the last weeks. Most of changes are small and
scattered while a bit big change is found in HD-audio Realtek codec
driver; it's a very device-specific fix that has been long wanted, so
I decided to pick up although it's in the middle RC.
Some highlights:
- A new guard ioctl for ALSA rawmidi API to avoid the misuse of the
new timestamp framing mode; it's for a regression fix
- HD-audio: a revert of the 5.15 change that might work badly, new
quirks for Lenovo Legion & co, a follow-up fix for CS8409
- ASoC: lots of SOF-related fixes, fsl component fixes, corrections
of mediatek drivers
- USB-audio: fix for the PM resume
- FireWire: oxfw and motu fixes"
* tag 'sound-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (25 commits)
ALSA: pcsp: Make hrtimer forwarding more robust
ALSA: rawmidi: introduce SNDRV_RAWMIDI_IOCTL_USER_PVERSION
ALSA: firewire-motu: fix truncated bytes in message tracepoints
ASoC: SOF: trace: Omit error print when waking up trace sleepers
ASoC: mediatek: mt8195: remove wrong fixup assignment on HDMITX
ASoC: SOF: loader: Re-phrase the missing firmware error to avoid duplication
ASoC: SOF: loader: release_firmware() on load failure to avoid batching
ALSA: hda/cs8409: Setup Dolphin Headset Mic as Phantom Jack
ALSA: pcxhr: "fix" PCXHR_REG_TO_PORT definition
ASoC: SOF: imx: imx8m: Bar index is only valid for IRAM and SRAM types
ASoC: SOF: imx: imx8: Bar index is only valid for IRAM and SRAM types
ASoC: SOF: Fix DSP oops stack dump output contents
ALSA: hda/realtek: Quirks to enable speaker output for Lenovo Legion 7i 15IMHG05, Yoga 7i 14ITL5/15ITL5, and 13s Gen2 laptops.
ALSA: usb-audio: Unify mixer resume and reset_resume procedure
Revert "ALSA: hda: Drop workaround for a hang at shutdown again"
ALSA: oxfw: fix transmission method for Loud models based on OXFW971
ASoC: mediatek: common: handle NULL case in suspend/resume function
ASoC: fsl_xcvr: register platform component before registering cpu dai
ASoC: fsl_spdif: register platform component before registering cpu dai
ASoC: fsl_micfil: register platform component before registering cpu dai
...
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The new framing mode causes the user space regression, because
the alsa-lib code does not initialize the reserved space in
the params structure when the device is opened.
This change adds SNDRV_RAWMIDI_IOCTL_USER_PVERSION like we
do for the PCM interface for the protocol acknowledgment.
Cc: David Henningsson <coding@diwic.se>
Cc: <stable@vger.kernel.org>
Fixes: 08fdced60ca0 ("ALSA: rawmidi: Add framing mode")
BugLink: https://github.com/alsa-project/alsa-lib/issues/178
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20210920171850.154186-1-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Pull kvm fixes from Paolo Bonzini:
"A bit late... I got sidetracked by back-from-vacation routines and
conferences. But most of these patches are already a few weeks old and
things look more calm on the mailing list than what this pull request
would suggest.
x86:
- missing TLB flush
- nested virtualization fixes for SMM (secure boot on nested
hypervisor) and other nested SVM fixes
- syscall fuzzing fixes
- live migration fix for AMD SEV
- mirror VMs now work for SEV-ES too
- fixes for reset
- possible out-of-bounds access in IOAPIC emulation
- fix enlightened VMCS on Windows 2022
ARM:
- Add missing FORCE target when building the EL2 object
- Fix a PMU probe regression on some platforms
Generic:
- KCSAN fixes
selftests:
- random fixes, mostly for clang compilation"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (43 commits)
selftests: KVM: Explicitly use movq to read xmm registers
selftests: KVM: Call ucall_init when setting up in rseq_test
KVM: Remove tlbs_dirty
KVM: X86: Synchronize the shadow pagetable before link it
KVM: X86: Fix missed remote tlb flush in rmap_write_protect()
KVM: x86: nSVM: don't copy virt_ext from vmcb12
KVM: x86: nSVM: test eax for 4K alignment for GP errata workaround
KVM: x86: selftests: test simultaneous uses of V_IRQ from L1 and L0
KVM: x86: nSVM: restore int_vector in svm_clear_vintr
kvm: x86: Add AMD PMU MSRs to msrs_to_save_all[]
KVM: x86: nVMX: re-evaluate emulation_required on nested VM exit
KVM: x86: nVMX: don't fail nested VM entry on invalid guest state if !from_vmentry
KVM: x86: VMX: synthesize invalid VM exit when emulating invalid guest state
KVM: x86: nSVM: refactor svm_leave_smm and smm_enter_smm
KVM: x86: SVM: call KVM_REQ_GET_NESTED_STATE_PAGES on exit from SMM mode
KVM: x86: reset pdptrs_from_userspace when exiting smm
KVM: x86: nSVM: restore the L1 host state prior to resuming nested guest on SMM exit
KVM: nVMX: Filter out all unsupported controls when eVMCS was activated
KVM: KVM: Use cpumask_available() to check for NULL cpumask when kicking vCPUs
KVM: Clean up benign vcpu->cpu data races when kicking vCPUs
...
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git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master
KVM/arm64 fixes for 5.15, take #1
- Add missing FORCE target when building the EL2 object
- Fix a PMU probe regression on some platforms
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Russell reported that since 5.13, KVM's probing of the PMU has
started to fail on his HW. As it turns out, there is an implicit
ordering dependency between the architectural PMU probing code and
and KVM's own probing. If, due to probe ordering reasons, KVM probes
before the PMU driver, it will fail to detect the PMU and prevent it
from being advertised to guests as well as the VMM.
Obviously, this is one probing too many, and we should be able to
deal with any ordering.
Add a callback from the PMU code into KVM to advertise the registration
of a host CPU PMU, allowing for any probing order.
Fixes: 5421db1be3b1 ("KVM: arm64: Divorce the perf code from oprofile helpers")
Reported-by: "Russell King (Oracle)" <linux@armlinux.org.uk>
Tested-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/YUYRKVflRtUytzy5@shell.armlinux.org.uk
Cc: stable@vger.kernel.org
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There is no user of tlbs_dirty.
Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210918005636.3675-4-jiangshanlai@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Read vcpu->vcpu_idx directly instead of bouncing through the one-line
wrapper, kvm_vcpu_get_idx(), and drop the wrapper. The wrapper is a
remnant of the original implementation and serves no purpose; remove it
before it gains more users.
Back when kvm_vcpu_get_idx() was added by commit 497d72d80a78 ("KVM: Add
kvm_vcpu_get_idx to get vcpu index in kvm->vcpus"), the implementation
was more than just a simple wrapper as vcpu->vcpu_idx did not exist and
retrieving the index meant walking over the vCPU array to find the given
vCPU.
When vcpu_idx was introduced by commit 8750e72a79dd ("KVM: remember
position in kvm->vcpus array"), the helper was left behind, likely to
avoid extra thrash (but even then there were only two users, the original
arm usage having been removed at some point in the past).
No functional change intended.
Suggested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210910183220.2397812-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A set of fixes for X86:
- Prevent sending the wrong signal when protection keys are enabled
and the kernel handles a fault in the vsyscall emulation.
- Invoke early_reserve_memory() before invoking e820_memory_setup()
which is required to make the Xen dom0 e820 hooks work correctly.
- Use the correct data type for the SETZ operand in the EMQCMDS
instruction wrapper.
- Prevent undefined behaviour to the potential unaligned accesss in
the instruction decoder library"
* tag 'x86-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/insn, tools/x86: Fix undefined behavior due to potential unaligned accesses
x86/asm: Fix SETZ size enqcmds() build failure
x86/setup: Call early_reserve_memory() earlier
x86/fault: Fix wrong signal when vsyscall fails with pkey
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The function __bad_area_nosemaphore() calls kernelmode_fixup_or_oops()
with the parameter @signal being actually @pkey, which will send a
signal numbered with the argument in @pkey.
This bug can be triggered when the kernel fails to access user-given
memory pages that are protected by a pkey, so it can go down the
do_user_addr_fault() path and pass the !user_mode() check in
__bad_area_nosemaphore().
Most cases will simply run the kernel fixup code to make an -EFAULT. But
when another condition current->thread.sig_on_uaccess_err is met, which
is only used to emulate vsyscall, the kernel will generate the wrong
signal.
Add a new parameter @pkey to kernelmode_fixup_or_oops() to fix this.
[ bp: Massage commit message, fix build error as reported by the 0day
bot: https://lkml.kernel.org/r/202109202245.APvuT8BX-lkp@intel.com ]
Fixes: 5042d40a264c ("x86/fault: Bypass no_context() for implicit kernel faults from usermode")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jiashuo Liang <liangjs@pku.edu.cn>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lkml.kernel.org/r/20210730030152.249106-1-liangjs@pku.edu.cn
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"A set of fixes for interrupt chip drivers:
- Work around a bad GIC integration on a Renesas platform which can't
handle byte-sized MMIO access
- Plug a potential memory leak in the GICv4 driver
- Fix a regression in the Armada 370-XP IPI code which was caused by
issuing EOI instack of ACK.
- A couple of small fixes here and there"
* tag 'irq-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic: Work around broken Renesas integration
irqchip/renesas-rza1: Use semicolons instead of commas
irqchip/gic-v3-its: Fix potential VPE leak on error
irqchip/goldfish-pic: Select GENERIC_IRQ_CHIP to fix build
irqchip/mbigen: Repair non-kernel-doc notation
irqdomain: Change the type of 'size' in __irq_domain_add() to be consistent
irqchip/armada-370-xp: Fix ack/eoi breakage
Documentation: Fix irq-domain.rst build warning
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git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip fixes from Marc Zyngier:
- Work around a bad GIC integration on a Renesas platform, where the
interconnect cannot deal with byte-sized MMIO accesses
- Cleanup another Renesas driver abusing the comma operator
- Fix a potential GICv4 memory leak on an error path
- Make the type of 'size' consistent with the rest of the code in
__irq_domain_add()
- Fix a regression in the Armada 370-XP IPI path
- Fix the build for the obviously unloved goldfish-pic
- Some documentation fixes
Link: https://lore.kernel.org/r/20210924090933.2766857-1-maz@kernel.org
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