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Merge tag 'fuse-fixes-4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse fixes from Miklos Szeredi:
"A couple of fixes, all bound for -stable (i.e. not regressions in this
cycle)"
* tag 'fuse-fixes-4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: fix use-after-free in fuse_direct_IO()
fuse: fix possibly missed wake-up after abort
fuse: fix leaked notify reply
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Merge tag 'selinux-pr-20181115' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull SELinux fixes from Paul Moore:
"Two small SELinux fixes for v4.20.
Ondrej's patch adds a check on user input, and my patch ensures we
don't look past the end of a buffer.
Both patches are quite small and pass the selinux-testsuite"
* tag 'selinux-pr-20181115' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: fix non-MLS handling in mls_context_to_sid()
selinux: check length properly in SCTP bind hook
- A bunch of meson fixes for this (Allwinner) platform.
- Establish a git repo for Intel pin control in MAINTAINERS.
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Merge tag 'pinctrl-v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
- A bunch of fixes for the Allwinner meson platform
- Establish a git repo for Intel pin control in MAINTAINERS
* tag 'pinctrl-v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
MAINTAINERS: Add tree link for Intel pin control driver
pinctrl: meson: fix meson8b ao pull register bits
pinctrl: meson: fix meson8 ao pull register bits
pinctrl: meson: fix gxl ao pull register bits
pinctrl: meson: fix gxbb ao pull register bits
pinctrl: meson: fix pinconf bias disable
Highlights include:
Stable fixes:
- Don't exit the NFSv4 state manager without clearing NFS4CLNT_MANAGER_RUNNING
Bugfixes:
- Fix an Oops when destroying the RPCSEC_GSS credential cache
- Fix an Oops during delegation callbacks
- Ensure that the NFSv4 state manager exits the loop on SIGKILL
- Fix a bogus get/put in generic_key_to_expire()
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Merge tag 'nfs-for-4.20-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
"Highlights include:
Stable fixes:
- Don't exit the NFSv4 state manager without clearing
NFS4CLNT_MANAGER_RUNNING
Bugfixes:
- Fix an Oops when destroying the RPCSEC_GSS credential cache
- Fix an Oops during delegation callbacks
- Ensure that the NFSv4 state manager exits the loop on SIGKILL
- Fix a bogus get/put in generic_key_to_expire()"
* tag 'nfs-for-4.20-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFSv4: Fix an Oops during delegation callbacks
SUNRPC: Fix a bogus get/put in generic_key_to_expire()
SUNRPC: Fix a Oops when destroying the RPCSEC_GSS credential cache
NFSv4: Ensure that the state manager exits the loop on SIGKILL
NFSv4: Don't exit the state manager without clearing NFS4CLNT_MANAGER_RUNNING
This pull request contains a for unrelated patches that fix various
issues in the RISC-V port:
* A patch that enables printk timestamps in the RISC-V defconfig.
* A whitespace fix to "struct pt_regs".
* A patch that adds a "vdso_install" target for RISC-V.
* A pair of build fixes: one to fix a typo in our makefile, and one to
clean up some warnings.
There will probably be more patches from us for 4.20, but I don't have
anything that's ready to go right now so I'm going to hold off a bit.
Right now the only concrete thing I know I want to make sure gets sorted
out is our 32-bit stat interface, which I don't want sitting in limbo
for another cycle as we have to get RV32I glibc sone.
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Merge tag 'riscv-for-linus-4.20-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux
Pull RISC-V fixes from Palmer Dabbelt:
"This contains a few patches that fix various issues in the RISC-V
port:
- enable printk timestamps in the RISC-V defconfig.
- a whitespace fix to "struct pt_regs".
- add a "vdso_install" target for RISC-V.
- a pair of build fixes: one to fix a typo in our makefile, and one
to clean up some warnings.
There will probably be more patches from us for 4.20, but I don't have
anything that's ready to go right now so I'm going to hold off a bit.
Right now the only concrete thing I know I want to make sure gets
sorted out is our 32-bit stat interface, which I don't want sitting in
limbo for another cycle as we have to get RV32I glibc sone"
* tag 'riscv-for-linus-4.20-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
RISC-V: Silence some module warnings on 32-bit
RISC-V: lib: Fix build error for 64-bit
riscv: add missing vdso_install target
riscv: fix spacing in struct pt_regs
RISC-V: defconfig: Enable printk timestamps
The most important changes here are two fixes for kdb regressions causes by
the hashing of %p pointers together with a fix for a potential overflow in
kdb tab completion handling (and warning fix).
Also included are a set of changes in preparation to (eventually) enable
-Wimplicit-fallthrough.
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
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Merge tag 'kgdb-fixes-4.20-rc3' of https://git.linaro.org/people/daniel.thompson/linux
Pull kgdb fixes from Daniel Thompson:
"The most important changes here are two fixes for kdb regressions
causes by the hashing of %p pointers together with a fix for a
potential overflow in kdb tab completion handling (and warning fix).
Also included are a set of changes in preparation to (eventually)
enable -Wimplicit-fallthrough"
* tag 'kgdb-fixes-4.20-rc3' of https://git.linaro.org/people/daniel.thompson/linux:
kdb: kdb_support: mark expected switch fall-throughs
kdb: kdb_keyboard: mark expected switch fall-throughs
kdb: kdb_main: refactor code in kdb_md_line
kdb: Use strscpy with destination buffer size
kdb: print real address of pointers instead of hashed addresses
kdb: use correct pointer when 'btc' calls 'btt'
Pull integrity fix from James Morris:
"Fix a bug introduced with in this merge window in 82f94f24475c ("KEYS:
Provide software public key query function [ver #2]")"
* 'fixes-v4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
integrity: support new struct public_key_signature encoding field
- Drop stale DT binding for the arm_big_little_dt driver removed
recently (Sudeep Holla).
- Fix up error handling in the imx6q cpufreq driver to make it
report voltage scaling failures (Anson Huang).
- Fix two issues in the cpufreq documentation (Viresh Kumar,
Zhao Wei Liew).
- Fix ARM cpuidle driver initialization regression from the 4.19
time frame and rework the driver registration part of it to
simplify code (Ulf Hansson).
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Merge tag 'pm-4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These remove a stale DT entry left behind after recent removal of a
cpufreq driver without users, fix up error handling in the imx6q
cpufreq driver, fix two issues in the cpufreq documentation, and
update the ARM cpufreq driver.
Specifics:
- Drop stale DT binding for the arm_big_little_dt driver removed
recently (Sudeep Holla).
- Fix up error handling in the imx6q cpufreq driver to make it report
voltage scaling failures (Anson Huang).
- Fix two issues in the cpufreq documentation (Viresh Kumar, Zhao Wei
Liew).
- Fix ARM cpuidle driver initialization regression from the 4.19 time
frame and rework the driver registration part of it to simplify
code (Ulf Hansson)"
* tag 'pm-4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ARM: cpuidle: Convert to use cpuidle_register|unregister()
ARM: cpuidle: Don't register the driver when back-end init returns -ENXIO
dt-bindings: cpufreq: remove stale arm_big_little_dt entry
Documentation: cpufreq: Correct a typo
cpufreq: imx6q: add return value check for voltage scale
Documentation: cpu-freq: Frequencies aren't always sorted
effort to hit, which might explain why they weren't found sooner.
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Merge tag 'nfsd-4.20-1' of git://linux-nfs.org/~bfields/linux
Pull nfsd fixes from Bruce Fields:
"Three nfsd bugfixes.
None are new bugs, but they all take a little effort to hit, which
might explain why they weren't found sooner"
* tag 'nfsd-4.20-1' of git://linux-nfs.org/~bfields/linux:
SUNRPC: drop pointless static qualifier in xdr_get_next_encode_buffer()
nfsd: COPY and CLONE operations require the saved filehandle to be set
sunrpc: correct the computation for page_ptr when truncating
This is mostly a set of minor and obvious fixes (three in one of the
new drivers). The only substantial change is to move the ufs to the
blk-mq now that the merge window fixed the suspend/resume issues with
blk-mq.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is mostly a set of minor and obvious fixes (three in one of the
new drivers).
The only substantial change is to move the ufs to the blk-mq now that
the merge window fixed the suspend/resume issues with blk-mq"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qla2xxx: Initialize port speed to avoid setting lower speed
Revert "scsi: ufs: Disable blk-mq for now"
scsi: NCR5380: Return false instead of NULL
scsi: qla2xxx: Fix a typo in MODULE_PARM_DESC
scsi: hisi_sas: Remove set but not used variable 'dq_list'
scsi: myrs: only build on little-endian platforms
scsi: myrs: avoid stack overflow warning
scsi: lpfc: fix remoteport access
scsi: myrb: fix sprintf buffer overflow warning
scsi: target/core: Avoid that a kernel oops is triggered when COMPARE AND WRITE fails
Drivers:
- cmos: stop exporting alarms when not supported
- hctosys: correctly report range error
- pcf2127: fix a memory leak
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Merge tag 'rtc-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC driver fixes from Alexandre Belloni:
- cmos: stop exporting alarms when not supported
- hctosys: correctly report range error
- pcf2127: fix a memory leak
* tag 'rtc-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
rtc: pcf2127: fix a kmemleak caused in pcf2127_i2c_gather_write
rtc: hctosys: Add missing range error reporting
rtc: cmos: Do not export alarm rtc_ops when we do not support alarms
Pull namespace fix from Eric Biederman:
"Benjamin Coddington noticed an unkillable busy loop in the kernel that
anyone who is sufficiently motivated can trigger. This bug did not
exist in earlier kernels making this bug a regression.
I have tested the change personally and confirmed that the bug exists
and that the fix works. This fix has been picked up by linux-next and
hopefully the automated testing bots and no problems have been
reported from those sources.
Ordinarily I would let something like this sit a little longer but I
am going to be away at Linux Plumbers the rest of this week and I am
afraid if I don't send the pull request now this fix will get lost"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
mnt: fix __detach_mounts infinite loop
Pull parisc fix from Helge Deller:
"Revert one patch which changed how spinlocks get released. It breaks
the rwlock implementation in glibc"
* 'parisc-4.20-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Revert "Release spinlocks using ordered store"
Pull ARM fix from Russell King:
"It was noticed that one of Julien's patches contained an error, this
fixes that up"
* 'spectre' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8810/1: vfp: Fix wrong assignement to ufp_exc
Commit 95ffe194204a ("selinux: refactor mls_context_to_sid() and make
it stricter") inadvertently changed how we handle labels that did not
contain MLS information. This patch restores the proper behavior in
mls_context_to_sid() and adds a comment explaining the proper
behavior to help ensure this doesn't happen again.
Fixes: 95ffe194204a ("selinux: refactor mls_context_to_sid() and make it stricter")
Reported-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <paul@paul-moore.com>
If the server sends a CB_GETATTR or a CB_RECALL while the filesystem is
being unmounted, then we can Oops when releasing the inode in
nfs4_callback_getattr() and nfs4_callback_recall().
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
On systems with IMA-appraisal enabled with a policy requiring file
signatures, the "good" signature values are stored on the filesystem as
extended attributes (security.ima). Signature verification failure
would normally be limited to just a particular file (eg. executable),
but during boot signature verification failure could result in a system
hang.
Defining and requiring a new public_key_signature field requires all
callers of asymmetric signature verification to be updated to reflect
the change. This patch updates the integrity asymmetric_verify()
caller.
Fixes: 82f94f24475c ("KEYS: Provide software public key query function [ver #2]")
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Cc: David Howells <dhowells@redhat.com>
Acked-by: Denis Kenzior <denkenz@gmail.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Notice that in this particular case, I replaced the code comments with
a proper "fall through" annotation, which is what GCC is expecting
to find.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Notice that in this particular case, I replaced the code comments with
a proper "fall through" annotation, which is what GCC is expecting
to find.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Replace the whole switch statement with a for loop. This makes the
code clearer and easy to read.
This also addresses the following Coverity warnings:
Addresses-Coverity-ID: 115090 ("Missing break in switch")
Addresses-Coverity-ID: 115091 ("Missing break in switch")
Addresses-Coverity-ID: 114700 ("Missing break in switch")
Suggested-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
[daniel.thompson@linaro.org: Tiny grammar change in description]
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
gcc 8.1.0 warns with:
kernel/debug/kdb/kdb_support.c: In function ‘kallsyms_symbol_next’:
kernel/debug/kdb/kdb_support.c:239:4: warning: ‘strncpy’ specified bound depends on the length of the source argument [-Wstringop-overflow=]
strncpy(prefix_name, name, strlen(name)+1);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/debug/kdb/kdb_support.c:239:31: note: length computed here
Use strscpy() with the destination buffer size, and use ellipses when
displaying truncated symbols.
v2: Use strscpy()
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Jonathan Toppins <jtoppins@redhat.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Daniel Thompson <daniel.thompson@linaro.org>
Cc: kgdb-bugreport@lists.sourceforge.net
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Since commit ad67b74d2469 ("printk: hash addresses printed with %p"),
all pointers printed with %p are printed with hashed addresses
instead of real addresses in order to avoid leaking addresses in
dmesg and syslog. But this applies to kdb too, with is unfortunate:
Entering kdb (current=0x(ptrval), pid 329) due to Keyboard Entry
kdb> ps
15 sleeping system daemon (state M) processes suppressed,
use 'ps A' to see all.
Task Addr Pid Parent [*] cpu State Thread Command
0x(ptrval) 329 328 1 0 R 0x(ptrval) *sh
0x(ptrval) 1 0 0 0 S 0x(ptrval) init
0x(ptrval) 3 2 0 0 D 0x(ptrval) rcu_gp
0x(ptrval) 4 2 0 0 D 0x(ptrval) rcu_par_gp
0x(ptrval) 5 2 0 0 D 0x(ptrval) kworker/0:0
0x(ptrval) 6 2 0 0 D 0x(ptrval) kworker/0:0H
0x(ptrval) 7 2 0 0 D 0x(ptrval) kworker/u2:0
0x(ptrval) 8 2 0 0 D 0x(ptrval) mm_percpu_wq
0x(ptrval) 10 2 0 0 D 0x(ptrval) rcu_preempt
The whole purpose of kdb is to debug, and for debugging real addresses
need to be known. In addition, data displayed by kdb doesn't go into
dmesg.
This patch replaces all %p by %px in kdb in order to display real
addresses.
Fixes: ad67b74d2469 ("printk: hash addresses printed with %p")
Cc: <stable@vger.kernel.org>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
On a powerpc 8xx, 'btc' fails as follows:
Entering kdb (current=0x(ptrval), pid 282) due to Keyboard Entry
kdb> btc
btc: cpu status: Currently on cpu 0
Available cpus: 0
kdb_getarea: Bad address 0x0
when booting the kernel with 'debug_boot_weak_hash', it fails as well
Entering kdb (current=0xba99ad80, pid 284) due to Keyboard Entry
kdb> btc
btc: cpu status: Currently on cpu 0
Available cpus: 0
kdb_getarea: Bad address 0xba99ad80
On other platforms, Oopses have been observed too, see
https://github.com/linuxppc/linux/issues/139
This is due to btc calling 'btt' with %p pointer as an argument.
This patch replaces %p by %px to get the real pointer value as
expected by 'btt'
Fixes: ad67b74d2469 ("printk: hash addresses printed with %p")
Cc: <stable@vger.kernel.org>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
selinux_sctp_bind_connect() must verify if the address buffer has
sufficient length before accessing the 'sa_family' field. See
__sctp_connect() for a similar check.
The length of the whole address ('len') is already checked in the
callees.
Reported-by: Qian Cai <cai@gmx.us>
Fixes: d452930fd3b9 ("selinux: Add SCTP support")
Cc: <stable@vger.kernel.org> # 4.17+
Cc: Richard Haines <richard_c_haines@btinternet.com>
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Tested-by: Qian Cai <cai@gmx.us>
Signed-off-by: Paul Moore <paul@paul-moore.com>
This reverts commit bad7dcd94f3956bcfc0a69ef71fdf0fcca3de4a8.
bad7dcd94f39 ("ACPI/PCI: Pay attention to device-specific _PXM node
values") caused boot failures (no console output at all) for Martin [1]
and Ingo [2] on AMD ThreadRipper systems.
Revert the commit until we figure out how to safely use these
device-specific _PXM values.
[1] https://lore.kernel.org/linux-pci/20180912152140.3676-2-Jonathan.Cameron@huawei.com
[2] https://lore.kernel.org/linux-pci/20181113071712.GA2353@gmail.com
Fixes: bad7dcd94f39 ("ACPI/PCI: Pay attention to device-specific _PXM node values")
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Fixes:
arch/riscv/kernel/module.c: In function 'apply_r_riscv_32_rela':
./include/linux/kern_levels.h:5:18: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 3 has type 'Elf32_Addr' {aka 'unsigned int'} [-Wformat=]
arch/riscv/kernel/module.c:23:27: note: format string is defined here
arch/riscv/kernel/module.c: In function 'apply_r_riscv_pcrel_hi20_rela':
./include/linux/kern_levels.h:5:18: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 3 has type 'Elf32_Addr' {aka 'unsigned int'} [-Wformat=]
arch/riscv/kernel/module.c:104:23: note: format string is defined here
arch/riscv/kernel/module.c: In function 'apply_r_riscv_hi20_rela':
./include/linux/kern_levels.h:5:18: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 3 has type 'Elf32_Addr' {aka 'unsigned int'} [-Wformat=]
arch/riscv/kernel/module.c:146:23: note: format string is defined here
arch/riscv/kernel/module.c: In function 'apply_r_riscv_got_hi20_rela':
./include/linux/kern_levels.h:5:18: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 3 has type 'Elf32_Addr' {aka 'unsigned int'} [-Wformat=]
arch/riscv/kernel/module.c:190:60: note: format string is defined here
arch/riscv/kernel/module.c: In function 'apply_r_riscv_call_plt_rela':
./include/linux/kern_levels.h:5:18: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 3 has type 'Elf32_Addr' {aka 'unsigned int'} [-Wformat=]
arch/riscv/kernel/module.c:214:24: note: format string is defined here
arch/riscv/kernel/module.c: In function 'apply_r_riscv_call_rela':
./include/linux/kern_levels.h:5:18: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 3 has type 'Elf32_Addr' {aka 'unsigned int'} [-Wformat=]
arch/riscv/kernel/module.c:236:23: note: format string is defined here
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Fixes the following build error from tinyconfig:
riscv64-unknown-linux-gnu-ld: kernel/sched/fair.o: in function `.L8':
fair.c:(.text+0x70): undefined reference to `__lshrti3'
riscv64-unknown-linux-gnu-ld: kernel/time/clocksource.o: in function `.L0 ':
clocksource.c:(.text+0x334): undefined reference to `__lshrti3'
Fixes: 7f47c73b355f ("RISC-V: Build tishift only on 64-bit")
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Building kernel 4.20 for Fedora as RPM fails, because riscv is missing
vdso_install target in arch/riscv/Makefile.
Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Replace 8 spaces with tab to match styling.
Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
The printk timestamps are very useful information to visually see
where kernel is spending time during boot. It also helps us see
the timing of hotplug events at runtime.
This patch enables printk timestamps in RISC-V defconfig so that
we have it enabled by default (similar to other architectures
such as x86_64, arm64, etc).
Signed-off-by: Anup Patel <anup@brainfault.org>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Commit 07d02a67b7fa causes a use-after free in the RPCSEC_GSS credential
destroy code, because the call to get_rpccred() in gss_destroying_context()
will now always fail to increment the refcount.
While we could just replace the get_rpccred() with a refcount_set(), that
would have the unfortunate consequence of resurrecting a credential in
the credential cache for which we are in the process of destroying the
RPCSEC_GSS context. Rather than do this, we choose to make a copy that
is never added to the cache and use that to destroy the context.
Fixes: 07d02a67b7fa ("SUNRPC: Simplify lookup code")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
If we exit the NFSv4 state manager due to a umount, then we can end up
leaving the NFS4CLNT_MANAGER_RUNNING flag set. If another mount causes
the nfs4_client to be rereferenced before it is destroyed, then we end
up never being able to recover state.
Fixes: 47c2199b6eb5 ("NFSv4.1: Ensure state manager thread dies on last ...")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v4.15+
In vfp_preserve_user_clear_hwstate, ufp_exc->fpinst2 gets assigned to
itself. It should actually be hwstate->fpinst2 that gets assigned to the
ufp_exc field.
Fixes commit 3aa2df6ec2ca6bc143a65351cca4266d03a8bc41 ("ARM: 8791/1:
vfp: use __copy_to_user() when saving VFP state").
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Since commit ff17fa561a04 ("d_invalidate(): unhash immediately")
immediately unhashes the dentry, we'll never return the mountpoint in
lookup_mountpoint(), which can lead to an unbreakable loop in
d_invalidate().
I have reports of NFS clients getting into this condition after the server
removes an export of an existing mount created through follow_automount(),
but I suspect there are various other ways to produce this problem if we
hunt down users of d_invalidate(). For example, it is possible to get into
this state by using XFS' d_invalidate() call in xfs_vn_unlink():
truncate -s 100m img{1,2}
mkfs.xfs -q -n version=ci img1
mkfs.xfs -q -n version=ci img2
mkdir -p /mnt/xfs
mount img1 /mnt/xfs
mkdir /mnt/xfs/sub1
mount img2 /mnt/xfs/sub1
cat > /mnt/xfs/sub1/foo &
umount -l /mnt/xfs/sub1
mount img2 /mnt/xfs/sub1
mount --make-private /mnt/xfs
mkdir /mnt/xfs/sub2
mount --move /mnt/xfs/sub1 /mnt/xfs/sub2
rmdir /mnt/xfs/sub1
Fix this by moving the check for an unlinked dentry out of the
detach_mounts() path.
Fixes: ff17fa561a04 ("d_invalidate(): unhash immediately")
Cc: stable@vger.kernel.org
Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Pull networking fixes from David Miller:
"One last pull request before heading to Vancouver for LPC, here we have:
1) Don't forget to free VSI contexts during ice driver unload, from
Victor Raj.
2) Don't forget napi delete calls during device remove in ice driver,
from Dave Ertman.
3) Don't request VLAN tag insertion of ibmvnic device when SKB
doesn't have VLAN tags at all.
4) IPV4 frag handling code has to accomodate the situation where two
threads try to insert the same fragment into the hash table at the
same time. From Eric Dumazet.
5) Relatedly, don't flow separate on protocol ports for fragmented
frames, also from Eric Dumazet.
6) Memory leaks in qed driver, from Denis Bolotin.
7) Correct valid MTU range in smsc95xx driver, from Stefan Wahren.
8) Validate cls_flower nested policies properly, from Jakub Kicinski.
9) Clearing of stats counters in mc88e6xxx driver doesn't retain
important bits in the G1_STATS_OP register causing the chip to
hang. Fix from Andrew Lunn"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (41 commits)
act_mirred: clear skb->tstamp on redirect
net: dsa: mv88e6xxx: Fix clearing of stats counters
tipc: fix link re-establish failure
net: sched: cls_flower: validate nested enc_opts_policy to avoid warning
net: mvneta: correct typo
flow_dissector: do not dissect l4 ports for fragments
net: qualcomm: rmnet: Fix incorrect assignment of real_dev
net: aquantia: allow rx checksum offload configuration
net: aquantia: invalid checksumm offload implementation
net: aquantia: fixed enable unicast on 32 macvlan
net: aquantia: fix potential IOMMU fault after driver unbind
net: aquantia: synchronized flow control between mac/phy
net: smsc95xx: Fix MTU range
net: stmmac: Fix RX packet size > 8191
qed: Fix potential memory corruption
qed: Fix SPQ entries not returned to pool in error flows
qed: Fix blocking/unlimited SPQ entries leak
qed: Fix memory/entry leak in qed_init_sp_request()
inet: frags: better deal with smp races
net: hns3: bugfix for not checking return value
...
- fix build errors in binrpm-pkg and bindeb-pkg targets
- fix false positive matches in merge_config.sh
- fix build version mismatch in deb-pkg target
- fix dtbs_install handling in (bin)deb-pkg target
- revert a commit that allows setlocalversion to write to source tree
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Merge tag 'kbuild-fixes-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- fix build errors in binrpm-pkg and bindeb-pkg targets
- fix false positive matches in merge_config.sh
- fix build version mismatch in deb-pkg target
- fix dtbs_install handling in (bin)deb-pkg target
- revert a commit that allows setlocalversion to write to source tree
* tag 'kbuild-fixes-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
builddeb: Fix inclusion of dtbs in debian package
Revert "scripts/setlocalversion: git: Make -dirty check more robust"
kbuild: deb-pkg: fix too low build version number
kconfig: merge_config: avoid false positive matches from comment lines
kbuild: deb-pkg: fix bindeb-pkg breakage when O= is used
kbuild: rpm-pkg: fix binrpm-pkg breakage when O= is used
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Merge tag 'for-4.20-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"Several fixes to recent release (4.19, fixes tagged for stable) and
other fixes"
* tag 'for-4.20-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
Btrfs: fix missing delayed iputs on unmount
Btrfs: fix data corruption due to cloning of eof block
Btrfs: fix infinite loop on inode eviction after deduplication of eof block
Btrfs: fix deadlock on tree root leaf when finding free extent
btrfs: avoid link error with CONFIG_NO_AUTO_INLINE
btrfs: tree-checker: Fix misleading group system information
Btrfs: fix missing data checksums after a ranged fsync (msync)
btrfs: fix pinned underflow after transaction aborted
Btrfs: fix cur_offset in the error case for nocow
error return cleanup paths.
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"A large number of ext4 bug fixes, mostly buffer and memory leaks on
error return cleanup paths"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: missing !bh check in ext4_xattr_inode_write()
ext4: fix buffer leak in __ext4_read_dirblock() on error path
ext4: fix buffer leak in ext4_expand_extra_isize_ea() on error path
ext4: fix buffer leak in ext4_xattr_move_to_block() on error path
ext4: release bs.bh before re-using in ext4_xattr_block_find()
ext4: fix buffer leak in ext4_xattr_get_block() on error path
ext4: fix possible leak of s_journal_flag_rwsem in error path
ext4: fix possible leak of sbi->s_group_desc_leak in error path
ext4: remove unneeded brelse call in ext4_xattr_inode_update_ref()
ext4: avoid possible double brelse() in add_new_gdb() on error path
ext4: avoid buffer leak in ext4_orphan_add() after prior errors
ext4: avoid buffer leak on shutdown in ext4_mark_iloc_dirty()
ext4: fix possible inode leak in the retry loop of ext4_resize_fs()
ext4: fix missing cleanup if ext4_alloc_flex_bg_array() fails while resizing
ext4: add missing brelse() update_backups()'s error path
ext4: add missing brelse() add_new_gdb_meta_bg()'s error path
ext4: add missing brelse() in set_flexbg_block_bitmap()'s error path
ext4: avoid potential extra brelse in setup_new_flex_group_blocks()
Pull x86 fixes from Thomas Gleixner:
"A set of x86 fixes:
- Cure the LDT remapping to user space on 5 level paging which ended
up in the KASLR space
- Remove LDT mapping before freeing the LDT pages
- Make NFIT MCE handling more robust
- Unbreak the VSMP build by removing the dependency on paravirt ops
- Support broken PIT emulation on Microsoft hyperV
- Don't trace vmware_sched_clock() to avoid tracer recursion
- Remove -pipe from KBUILD CFLAGS which breaks clang and is also
slower on GCC
- Trivial coding style and typo fixes"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu/vmware: Do not trace vmware_sched_clock()
x86/vsmp: Remove dependency on pv_irq_ops
x86/ldt: Remove unused variable in map_ldt_struct()
x86/ldt: Unmap PTEs for the slot before freeing LDT pages
x86/mm: Move LDT remap out of KASLR region on 5-level paging
acpi/nfit, x86/mce: Validate a MCE's address before using it
acpi/nfit, x86/mce: Handle only uncorrectable machine checks
x86/build: Remove -pipe from KBUILD_CFLAGS
x86/hyper-v: Fix indentation in hv_do_fast_hypercall16()
Documentation/x86: Fix typo in zero-page.txt
x86/hyper-v: Enable PIT shutdown quirk
clockevents/drivers/i8253: Add support for PIT shutdown quirk
Pull perf fixes from Thomas Gleixner:
"A bunch of perf tooling fixes:
- Make the Intel PT SQL viewer more robust
- Make the Intel PT debug log more useful
- Support weak groups in perf record so it's behaving the same way as
perf stat
- Display the LBR stats in callchain entries properly in perf top
- Handle different PMu names with common prefix properlin in pert
stat
- Start syscall augmenting in perf trace. Preparation for
architecture independent eBPF instrumentation of syscalls.
- Fix build breakage in JVMTI perf lib
- Fix arm64 tools build failure wrt smp_load_{acquire,release}"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tools: Do not zero sample_id_all for group members
perf tools: Fix undefined symbol scnprintf in libperf-jvmti.so
perf beauty: Use SRCARCH, ARCH=x86_64 must map to "x86" to find the headers
perf intel-pt: Add MTC and CYC timestamps to debug log
perf intel-pt: Add more event information to debug log
perf scripts python: exported-sql-viewer.py: Fix table find when table re-ordered
perf scripts python: exported-sql-viewer.py: Add help window
perf scripts python: exported-sql-viewer.py: Add Selected branches report
perf scripts python: exported-sql-viewer.py: Fall back to /usr/local/lib/libxed.so
perf top: Display the LBR stats in callchain entry
perf stat: Handle different PMU names with common prefix
perf record: Support weak groups
perf evlist: Move perf_evsel__reset_weak_group into evlist
perf augmented_syscalls: Start collecting pathnames in the BPF program
perf trace: Fix setting of augmented payload when using eBPF + raw_syscalls
perf trace: When augmenting raw_syscalls plug raw_syscalls:sys_exit too
perf examples bpf: Start augmenting raw_syscalls:sys_{start,exit}
tools headers barrier: Fix arm64 tools build failure wrt smp_load_{acquire,release}
Pull timer fix from Thomas Gleixner:
"Just the removal of a redundant call into the sched deadline overrun
check"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
posix-cpu-timers: Remove useless call to check_dl_overrun()
Pull scheduler fixes from Thomas Gleixner:
"Two small scheduler fixes:
- Take hotplug lock in sched_init_smp(). Technically not really
required, but lockdep will complain other.
- Trivial comment fix in sched/fair"
* 'sched/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Fix a comment in task_numa_fault()
sched/core: Take the hotplug lock in sched_init_smp()
Pull locking build fix from Thomas Gleixner:
"A single fix for a build fail with CONFIG_PROFILE_ALL_BRANCHES=y in
the qspinlock code"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/qspinlock: Fix compile error
Pull core fixes from Thomas Gleixner:
"A couple of fixlets for the core:
- Kernel doc function documentation fixes
- Missing prototypes for weak watchdog functions"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
resource/docs: Complete kernel-doc style function documentation
watchdog/core: Add missing prototypes for weak functions
resource/docs: Fix new kernel-doc warnings
If sch_fq is used at ingress, skbs that might have been
timestamped by net_timestamp_set() if a packet capture
is requesting timestamps could be delayed by arbitrary
amount of time, since sch_fq time base is MONOTONIC.
Fix this problem by moving code from sch_netem.c to act_mirred.c.
Fixes: fb420d5d91c1 ("tcp/fq: move back to CLOCK_MONOTONIC")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>