It seems that Linus looks for [GIT PULL] in subject lines to ensure that
pull requests don't get buried in the noise during merge windows. Update
the docs to reflect that.
[jc: From an impromptu post from willy, thus no SOB]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Using reStructuredText literal-block element with ascii-art.
That prevents the ascii art from being processed as
reStructuredText.
Reported-by: Masanari Iida <standby24x7@gmail.com>
Reviewed-and-tested-by: Jani Nikula <jani.nikula@intel.com>
Fixes: bdecb33af3 ("usb: typec: API for controlling USB Type-C Multiplexers")
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The MIPS kernel memset / bzero implementation includes a small_memset
branch which is used when the region to be set is smaller than a long (4
bytes on 32bit, 8 bytes on 64bit). The current small_memset
implementation uses a simple store byte loop to write the destination.
There are 2 issues with this implementation:
1. When EVA mode is active, user and kernel address spaces may overlap.
Currently the use of the sb instruction means kernel mode addressing is
always used and an intended write to userspace may actually overwrite
some critical kernel data.
2. If the write triggers a page fault, for example by calling
__clear_user(NULL, 2), instead of gracefully handling the fault, an OOPS
is triggered.
Fix these issues by replacing the sb instruction with the EX() macro,
which will emit EVA compatible instuctions as required. Additionally
implement a fault fixup for small_memset which sets a2 to the number of
bytes that could not be cleared (as defined by __clear_user).
Reported-by: Chuanhua Lei <chuanhua.lei@intel.com>
Signed-off-by: Matt Redfearn <matt.redfearn@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/18975/
Signed-off-by: James Hogan <jhogan@kernel.org>
Mike Rapoport says:
These patches convert files in Documentation/vm to ReST format, add an
initial index and link it to the top level documentation.
There are no contents changes in the documentation, except few spelling
fixes. The relatively large diffstat stems from the indentation and
paragraph wrapping changes.
I've tried to keep the formatting as consistent as possible, but I could
miss some places that needed markup and add some markup where it was not
necessary.
[jc: significant conflicts in vm/hmm.rst]
Just add a label for cross-referencing and indent the text to make it
``literal``
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
I fell into the trap of having set up function tracer with a very
limited filter and then switched over to function_graph and was
erroneously wondering why the latter did not trace what I expected,
which was the full unabridged graph recursion.
Signed-off-by: Steffen Maier <maier@linux.ibm.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Small tweaks to the Maintainer PGP guide:
- Use --quick-addkey command that is compatible between GnuPG-2.2 and
GnuPG-2.1 (which many people still have)
- Add a note about the Nitrokey program
- Warn that some devices can't change the passphrase before there are
keys on the card (specifically, Nitrokeys)
- Link to the GnuPG wiki page about gpg-agent forwarding over ssh
- Tell git to use gpgv2 instead of legacy gpgv when verifying signed
tags or commits
Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Pull missed timer updates from Thomas Gleixner:
"This is a branch which got forgotten during the merge window, but it
contains only fixes and hardware enablement. No fundamental changes.
- Various fixes for the imx-tpm clocksource driver
- A new timer driver for the NCPM7xx SoC family"
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource/drivers/imx-tpm: Add different counter width support
clocksource/drivers/imx-tpm: Correct some registers operation flow
clocksource/drivers/imx-tpm: Fix typo of clock name
dt-bindings: timer: tpm: fix typo of clock name
clocksource/drivers/npcm: Add NPCM7xx timer driver
dt-binding: timer: document NPCM7xx timer DT bindings
Both ecryptfs_filldir() and ecryptfs_readlink_lower() use
ecryptfs_decode_and_decrypt_filename() to translate lower filenames to
upper filenames. The function correctly passes up lower filenames,
unchanged, when filename encryption isn't in use. However, it was also
passing up lower filenames when the filename wasn't encrypted or
when decryption failed. Since 88ae4ab980, eCryptfs refuses to lookup
lower plaintext names when filename encryption is enabled so this
resulted in a situation where userspace would see lower plaintext
filenames in calls to getdents(2) but then not be able to lookup those
filenames.
An example of this can be seen when enabling filename encryption on an
eCryptfs mount at the root directory of an Ext4 filesystem:
$ ls -1i /lower
12 ECRYPTFS_FNEK_ENCRYPTED.FWYZD8TcW.5FV-TKTEYOHsheiHX9a-w.NURCCYIMjI8pn5BDB9-h3fXwrE--
11 lost+found
$ ls -1i /upper
ls: cannot access '/upper/lost+found': No such file or directory
? lost+found
12 test
With this change, the lower lost+found dentry is ignored:
$ ls -1i /lower
12 ECRYPTFS_FNEK_ENCRYPTED.FWYZD8TcW.5FV-TKTEYOHsheiHX9a-w.NURCCYIMjI8pn5BDB9-h3fXwrE--
11 lost+found
$ ls -1i /upper
12 test
Additionally, some potentially noisy error/info messages in the related
code paths are turned into debug messages so that the logs can't be
easily filled.
Fixes: 88ae4ab980 ("ecryptfs_lookup(): try either only encrypted or plaintext name")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
writing nested virtualization tests.
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Version: GnuPG v2.0.22 (GNU/Linux)
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cAIAbaCUAck4tl5YNDgv/SOQ644ClmDVP/4CgezqosoY29eLY0+P71GQZEIQ7aB5
Taa7UI5qYnIctBmxFwD1+iV717Vyb+QLpRnMb8zjLkfT/3S8HsQvpcYJlQrrN3PP
w4VIvhZjPx11wvXDCuY6ire7sBEb/vSQQewGWg9dLt4hnDz1tRFMtAg/7GVT+rG9
SjuH57NrXAKWiNVlQvYfLSfaTyPf5J41i49nwFJJVPY1kMaXvOSDDOfejTD/SjTs
pYye7o8TGbrsY9O8H85gxdppHz4K0+sP9xNunUqk1wQ+zo9lWTejIaDoN2rzyuA=
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Bug fixes, plus a new test case and the associated infrastructure for
writing nested virtualization tests"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm: selftests: add vmx_tsc_adjust_test
kvm: x86: move MSR_IA32_TSC handling to x86.c
X86/KVM: Properly update 'tsc_offset' to represent the running guest
kvm: selftests: add -std=gnu99 cflags
x86: Add check for APIC access address for vmentry of L2 guests
KVM: X86: fix incorrect reference of trace_kvm_pi_irte_update
X86/KVM: Do not allow DISABLE_EXITS_MWAIT when LAPIC ARAT is not available
kvm: selftests: fix spelling mistake: "divisable" and "divisible"
X86/VMX: Disable VMX preemption timer if MWAIT is not intercepted
The |= operator will let us end up with an invalid PTE. Use
the correct &= instead.
[ The bug was also independently reported by Shuah Khan ]
Fixes: fb43d6cb91 ('x86/mm: Do not auto-massage page protections')
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It would allocate memory in this function when the cork->opt is NULL. But
the memory isn't freed if failed in the latter rt check, and return error
directly. It causes the memleak if its caller is ip_make_skb which also
doesn't free the cork->opt when meet a error.
Now move the rt check ahead to avoid the memleak.
Signed-off-by: Gao Feng <gfree.wind@vip.163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In both HDMI and DP, device count is represented by 6:0 bits of a
register(BInfo/Bstatus)
So macro for bitmasking the device_count is fixed(0x3F->0x7F).
v3:
Retained the Rb-ed.
v4:
%s/drm\/i915/drm [rodrigo]
v5:
Added "Fixes:" and HDCP keyword in subject [Rodrigo, Sean Paul]
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Fixes: 495eb7f877 drm: Add some HDCP related #defines
cc: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1522929802-22850-1-git-send-email-ramalingam.c@intel.com
The test checks the behavior of setting MSR_IA32_TSC in a nested guest,
and the TSC_OFFSET VMCS field in general. It also introduces the testing
infrastructure for Intel nested virtualization.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Update 'tsc_offset' on vmentry/vmexit of L2 guests to ensure that it always
captures the TSC_OFFSET of the running guest whether it is the L1 or L2
guest.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Jim Mattson <jmattson@google.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de>
[AMD changes, fix update_ia32_tsc_adjust_msr. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In order to remove the race caught by syzbot [1], we need
to lock the socket before using po->tp_version as this could
change under us otherwise.
This means lock_sock() and release_sock() must be done by
packet_set_ring() callers.
[1] :
BUG: KMSAN: uninit-value in packet_set_ring+0x1254/0x3870 net/packet/af_packet.c:4249
CPU: 0 PID: 20195 Comm: syzkaller707632 Not tainted 4.16.0+ #83
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x185/0x1d0 lib/dump_stack.c:53
kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
__msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:676
packet_set_ring+0x1254/0x3870 net/packet/af_packet.c:4249
packet_setsockopt+0x12c6/0x5a90 net/packet/af_packet.c:3662
SYSC_setsockopt+0x4b8/0x570 net/socket.c:1849
SyS_setsockopt+0x76/0xa0 net/socket.c:1828
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x449099
RSP: 002b:00007f42b5307ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 000000000070003c RCX: 0000000000449099
RDX: 0000000000000005 RSI: 0000000000000107 RDI: 0000000000000003
RBP: 0000000000700038 R08: 000000000000001c R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000080eecf R14: 00007f42b53089c0 R15: 0000000000000001
Local variable description: ----req_u@packet_setsockopt
Variable was created at:
packet_setsockopt+0x13f/0x5a90 net/packet/af_packet.c:3612
SYSC_setsockopt+0x4b8/0x570 net/socket.c:1849
Fixes: f6fb8f100b ("af-packet: TPACKET_V3 flexible buffer implementation.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Due to a firmware bug, the hypervisor can send an interrupt to a
transmit or receive queue just prior to a partition migration, not
allowing the device enough time to handle it and send an EOI. When
the partition migrates, the interrupt is lost but an "EOI-pending"
flag for the interrupt line is still set in firmware. No further
interrupts will be sent until that flag is cleared, effectively
freezing that queue. To workaround this, the driver will disable the
hardware interrupt and send an H_EOI signal prior to re-enabling it.
This will flush the pending EOI and allow the driver to continue
operation.
Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
