- 16 Sep, 2019 35 commits
-
-
Dexuan Cui authored
[ Upstream commit fc62c3b1 ] We don't need to call process_ib_ipinfo() if message->kvp_hdr.operation is KVP_OP_GET_IP_INFO in kvp_send_key(), because here we just need to pass on the op code from the host to the userspace; when the userspace returns the info requested by the host, we pass the info on to the host in kvp_respond_to_host() -> process_ob_ipinfo(). BTW, the current buggy code actually doesn't cause any harm, because only message->kvp_hdr.operation is used by the userspace, in the case of KVP_OP_GET_IP_INFO. The patch also adds a missing "break;" in kvp_send_key(). BTW, the current buggy code actually doesn't cause any harm, because in the case of KVP_OP_SET, the unexpected fall-through corrupts message->body.kvp_set.data.key_size, but that is not really used: see the definition of struct hv_kvp_exchg_msg_value. Signed-off-by:
Dexuan Cui <decui@microsoft.com> Cc: K. Y. Srinivasan <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: <Stable@vger.kernel.org> Signed-off-by:
K. Y. Srinivasan <kys@microsoft.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Sasha Levin <sashal@kernel.org>
-
David Howells authored
[ Upstream commit 2ecefa0a ] The keyctl_dh_params struct in uapi/linux/keyctl.h contains the symbol "private" which means that the header file will cause compilation failure if #included in to a C++ program. Further, the patch that added the same struct to the keyutils package named the symbol "priv", not "private". The previous attempt to fix this (commit 8a2336e5) did so by simply renaming the kernel's copy of the field to dh_private, but this then breaks existing userspace and as such has been reverted (commit 8c0f9f5b). [And note, to those who think that wrapping the struct in extern "C" {} will work: it won't; that only changes how symbol names are presented to the assembler and linker.]. Instead, insert an anonymous union around the "private" member and add a second member in there with the name "priv" to match the one in the keyutils package. The "private" member is then wrapped in !__cplusplus cpp-conditionals to hide it from C++. Fixes: ddbb4114 ("KEYS: Add KEYCTL_DH_COMPUTE command") Fixes: 8a2336e5 ("uapi/linux/keyctl.h: don't use C++ reserved keyword as a struct member name") Signed-off-by:
David Howells <dhowells@redhat.com> cc: Randy Dunlap <rdunlap@infradead.org> cc: Lubomir Rintel <lkundrak@v3.sk> cc: James Morris <jmorris@namei.org> cc: Mat Martineau <mathew.j.martineau@linux.intel.com> cc: Stephan Mueller <smueller@chronox.de> cc: Andrew Morton <akpm@linux-foundation.org> cc: Linus Torvalds <torvalds@linux-foundation.org> cc: stable@vger.kernel.org Signed-off-by:
James Morris <james.morris@microsoft.com> Signed-off-by:
-
Giridhar Malavali authored
[ Upstream commit 9fe278f4 ] There is a probability that the SRB structure might have been released by the time the debug log message dereferences it. This patch moved the log messages before the command is issued to the firmware to prevent unknown behavior and kernel crash Fixes: 726b8548 ("qla2xxx: Add framework for async fabric discovery") Cc: <stable@vger.kernel.org> Signed-off-by:
Giridhar Malavali <giridhar.malavali@cavium.com> Reviewed-by:
Ewan D. Milne <emilne@redhat.com> Signed-off-by:
Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
-
Hans Verkuil authored
[ Upstream commit f94d463f ] Move cec_get_edid_phys_addr() to cec-adap.c. It's not worth keeping a separate source for this. Signed-off-by:
Hans Verkuil <hans.verkuil@cisco.com> Cc: <stable@vger.kernel.org> # for v4.17 and up Signed-off-by:
Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by:
-
Hans Verkuil authored
[ Upstream commit 9cfd2753 ] Several CEC functions are actually specific for use with receivers, i.e. they should be part of the V4L2 subsystem, not CEC. These functions deal with validating and modifying EDIDs for (HDMI) receivers, and they do not actually have anything to do with the CEC subsystem and whether or not CEC is enabled. The problem was that if the CEC_CORE config option was not set, then these functions would become stubs, but that's not right: they should always be valid. So replace the cec_ prefix by v4l2_ and move them to v4l2-dv-timings.c. Update all drivers that call these accordingly. Signed-off-by:
Lars-Peter Clausen <lars@metafoo.de> Cc: <stable@vger.kernel.org> # for v4.17 and up Signed-off-by:
-
Jan-Marek Glogowski authored
[ Upstream commit 3cf71bc9 ] This re-applies the workaround for "some DP sinks, [which] are a little nuts" from commit 1a36147b ("drm/i915: Perform link quality check unconditionally during long pulse"). It makes the secondary AOC E2460P monitor connected via DP to an acer Veriton N4640G usable again. This hunk was dropped in commit c85d200e ("drm/i915: Move SST DP link retraining into the ->post_hotplug() hook") Fixes: c85d200e ("drm/i915: Move SST DP link retraining into the ->post_hotplug() hook") [Cleaned up commit message, added stable cc] Signed-off-by:
Lyude Paul <lyude@redhat.com> Signed-off-by:
Jan-Marek Glogowski <glogow@fbihome.de> Cc: stable@vger.kernel.org Link: https://patchwork.freedesktop.org/patch/msgid/20180825191035.3945-1-lyude@redhat.comSigned-off-by:
-
YueHaibing authored
[ Upstream commit bc6f2a75 ] In module_add_modinfo_attrs if sysfs_create_file fails, we forget to free allocated modinfo_attrs and roll back the sysfs files. Fixes: 03e88ae1 ("[PATCH] fix module sysfs files reference counting") Reviewed-by:
Miroslav Benes <mbenes@suse.cz> Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Signed-off-by:
Jessica Yu <jeyu@kernel.org> Signed-off-by:
-
Jessica Yu authored
[ Upstream commit 38f054d5 ] Some arches (e.g., arm64, x86) have moved towards non-executable module_alloc() allocations for security hardening reasons. That means that the module loader will need to set the text section of a module to executable, regardless of whether or not CONFIG_STRICT_MODULE_RWX is set. When CONFIG_STRICT_MODULE_RWX=y, module section allocations are always page-aligned to handle memory rwx permissions. On some arches with CONFIG_STRICT_MODULE_RWX=n however, when setting the module text to executable, the BUG_ON() in frob_text() gets triggered since module section allocations are not page-aligned when CONFIG_STRICT_MODULE_RWX=n. Since the set_memory_* API works with pages, and since we need to call set_memory_x() regardless of whether CONFIG_STRICT_MODULE_RWX is set, we might as well page-align all module section allocations for ease of managing rwx permissions of module sections (text, rodata, etc). Fixes: 2eef1399 ("modules: fix BUG when load module with rodata=n") Reported-by:
Martin Kaiser <lists@kaiser.cx> Reported-by:
Bartosz Golaszewski <brgl@bgdev.pl> Tested-by:
David Lechner <david@lechnology.com> Tested-by:
Martin Kaiser <martin@kaiser.cx> Tested-by:
Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by:
-
Brian Norris authored
[ Upstream commit 1e2517d1 ] Commit d5269c45 ("remoteproc: qcom: q6v5: Propagate EPROBE_DEFER") fixed up our probe code to handle -EPROBE_DEFER, but it ignored one of our interrupts, and it also didn't really handle all the other error codes you might get (e.g., with a bad DT definition). Handle those all explicitly. Fixes: d5269c45 ("remoteproc: qcom: q6v5: Propagate EPROBE_DEFER") Reviewed-by:
Douglas Anderson <dianders@chromium.org> Signed-off-by:
Brian Norris <briannorris@chromium.org> Signed-off-by:
Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by:
-
Nathan Chancellor authored
[ Upstream commit 9c940bbe ] Clang warns after commit 8985167e ("clk: s2mps11: Fix matching when built as module and DT node contains compatible"): drivers/clk/clk-s2mps11.c:242:34: warning: variable 's2mps11_dt_match' is not needed and will not be emitted [-Wunneeded-internal-declaration] static const struct of_device_id s2mps11_dt_match[] = { ^ 1 warning generated. This warning happens when a variable is used in some construct that doesn't require a reference to that variable to be emitted in the symbol table; in this case, it's MODULE_DEVICE_TABLE, which only needs to hold the data of the variable, not the variable itself. $ nm -S drivers/clk/clk-s2mps11.o | rg s2mps11_dt_match 00000078 000003d4 R __mod_of__s2mps11_dt_match_device_table Normally, with device ID table variables, it means that the variable just needs to be tied to the device declaration at the bottom of the file, like s2mps11_clk_id: $ nm -S drivers/clk/clk-s2mps11.o | rg s2mps11_clk_id 00000000 00000078 R __mod_platform__s2mps11_clk_id_device_table 00000000 00000078 r s2mps11_clk_id However, because the comment above this deliberately doesn't want this variable added to .of_match_table, we need to mark s2mps11_dt_match as __used to silence this warning. This makes it clear to Clang that the variable is used for something, even if a reference to it isn't being emitted. Signed-off-by:
Nathan Chancellor <natechancellor@gmail.com> Fixes: 8985167e ("clk: s2mps11: Fix matching when built as module and DT node contains compatible") Signed-off-by:
Stephen Boyd <sboyd@kernel.org> Signed-off-by:
-
Hannes Reinecke authored
[ Upstream commit 8730c1dd ] When tearing down a controller the following warning is issued: WARNING: CPU: 0 PID: 30681 at ../kernel/workqueue.c:2418 check_flush_dependency This happens as the err_work workqueue item is scheduled on the system workqueue (which has WQ_MEM_RECLAIM not set), but is flushed from a workqueue which has WQ_MEM_RECLAIM set. Fix this by providing an FC-NVMe specific workqueue. Fixes: 4cff280a ("nvme-fc: resolve io failures during connect") Signed-off-by:
Hannes Reinecke <hare@suse.com> Reviewed-by:
James Smart <james.smart@broadcom.com> Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
-
David Abdurachmanov authored
[ Upstream commit 397182e0 ] Noticed while building kernel-4.20.0-0.rc5.git2.1.fc30 for Fedora 30/RISCV. [..] BUILDSTDERR: arch/riscv/kernel/ftrace.c: In function 'prepare_ftrace_return': BUILDSTDERR: arch/riscv/kernel/ftrace.c:135:6: warning: unused variable 'err' [-Wunused-variable] BUILDSTDERR: int err; BUILDSTDERR: ^~~ [..] Signed-off-by:
David Abdurachmanov <david.abdurachmanov@gmail.com> Fixes: e949b6db ("riscv/function_graph: Simplify with function_graph_enter()") Reviewed-by:
Olof Johansson <olof@lixom.net> Acked-by:
Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by:
Palmer Dabbelt <palmer@sifive.com> Signed-off-by:
-
Nicolas Boichat authored
[ Upstream commit 31013836 ] The basepath may contain special characters, which would confuse the regex matcher. ${var#prefix} does the right thing. Link: http://lkml.kernel.org/r/20190518055946.181563-1-drinkcat@chromium.org Fixes: 67a28de4 ("scripts/decode_stacktrace: only strip base path when a prefix of the path") Signed-off-by:
Nicolas Boichat <drinkcat@chromium.org> Reviewed-by:
Stephen Boyd <swboyd@chromium.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
-
Dmitry Voytik authored
[ Upstream commit 26e2d7b0 ] After commit ef05bcb6, boot from USB drives is broken. Fix this problem by enabling usb-host regulators during boot time. Fixes: ef05bcb6 ("arm64: dts: rockchip: fix vcc_host1_5v pin assign on rk3328-rock64") Cc: stable@vger.kernel.org Signed-off-by:
Dmitry Voytik <voytikd@gmail.com> Signed-off-by:
Heiko Stuebner <heiko@sntech.de> Signed-off-by:
-
Fabien Dessenne authored
[ Upstream commit dbb9fcc8 ] Manage the irq = 0 case, where we shall return an error. Fixes: b5b5a27b ("media: stm32-dcmi: return appropriate error codes during probe") Signed-off-by:
Fabien Dessenne <fabien.dessenne@st.com> Reported-by:
Pavel Machek <pavel@ucw.cz> Acked-by:
Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by:
-
Christophe Leroy authored
[ Upstream commit 9c4e4c90 ] Otherwise, the following warning is encountered: WARNING: vmlinux.o(.text+0x3dc6): Section mismatch in reference from the variable start_here_multiplatform to the function .init.text:.early_setup() The function start_here_multiplatform() references the function __init .early_setup(). This is often because start_here_multiplatform lacks a __init annotation or the annotation of .early_setup is wrong. Fixes: 56c46bba ("powerpc/64: Fix booting large kernels with STRICT_KERNEL_RWX") Cc: Russell Currey <ruscur@russell.cc> Signed-off-by:
Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
-
Steven Rostedt (VMware) authored
[ Upstream commit 745cfeaa ] Arnd reported the following compiler warning: arch/x86/kernel/ftrace.c:669:23: error: 'ftrace_jmp_replace' defined but not used [-Werror=unused-function] The ftrace_jmp_replace() function now only has a single user and should be simply moved by that user. But looking at the code, it shows that ftrace_jmp_replace() is similar to ftrace_call_replace() except that instead of using the opcode of 0xe8 it uses 0xe9. It makes more sense to consolidate that function into one implementation that both ftrace_jmp_replace() and ftrace_call_replace() use by passing in the op code separate. The structure in ftrace_code_union is also modified to replace the "e8" field with the more appropriate name "op". Cc: stable@vger.kernel.org Reported-by:
Arnd Bergmann <arnd@arndb.de> Acked-by:
-
Hangbin Liu authored
[ Upstream commit 34632975 ] DEV_ADDR is defined but not used. Use it in address setting. Do the same with IPv6 for consistency. Reported-by:
David Ahern <dsahern@gmail.com> Fixes: fc82d93e ("selftests: fib_rule_tests: fix local IPv4 address typo") Signed-off-by:
Hangbin Liu <liuhangbin@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
-
Jason A. Donenfeld authored
[ Upstream commit 0354c1a3 ] While this doesn't actually amount to a real difference, since the macro evaluates to the same thing, every place else operates on ktime_t using these functions, so let's not break the pattern. Fixes: e3ff9c36 ("timekeeping: Repair ktime_get_coarse*() granularity") Signed-off-by:
Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Reviewed-by:
-
Manikanta Pubbisetty authored
[ Upstream commit e6f40511 ] Commit 33d915d9 ("{nl,mac}80211: allow 4addr AP operation on crypto controlled devices") has introduced a change which allows 4addr operation on crypto controlled devices (ex: ath10k). This change has inadvertently impacted the interface combinations logic on such devices. General rule is that software interfaces like AP/VLAN should not be listed under supported interface combinations and should not be considered during validation of these combinations; because of the aforementioned change, AP/VLAN interfaces(if present) will be checked against interfaces supported by the device and blocks valid interface combinations. Consider a case where an AP and AP/VLAN are up and running; when a second AP device is brought up on the same physical device, this AP will be checked against the AP/VLAN interface (which will not be part of supported interface combinations of the device) and blocks second AP to come up. Add a new API cfg80211_iftype_allowed() to fix the problem, this API works for all devices with/without SW crypto control. Signed-off-by:
Manikanta Pubbisetty <mpubbise@codeaurora.org> Fixes: 33d915d9 ("{nl,mac}80211: allow 4addr AP operation on crypto controlled devices") Link: https://lore.kernel.org/r/1563779690-9716-1-git-send-email-mpubbise@codeaurora.orgSigned-off-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
-
Dennis Zhou authored
[ Upstream commit c9b3007f ] The iolatency controller is based on rq_qos. It increments on rq_qos_throttle() and decrements on either rq_qos_cleanup() or rq_qos_done_bio(). a3fb01ba fixes the double accounting issue where blk_mq_make_request() may call both rq_qos_cleanup() and rq_qos_done_bio() on REQ_NO_WAIT. So checking STS_AGAIN prevents the double decrement. The above works upstream as the only way we can get STS_AGAIN is from blk_mq_get_request() failing. The STS_AGAIN handling isn't a real problem as bio_endio() skipping only happens on reserved tag allocation failures which can only be caused by driver bugs and already triggers WARN. However, the fix creates a not so great dependency on how STS_AGAIN can be propagated. Internally, we (Facebook) carry a patch that kills read ahead if a cgroup is io congested or a fatal signal is pending. This combined with chained bios progagate their bi_status to the parent is not already set can can cause the parent bio to not clean up properly even though it was successful. This consequently leaks the inflight counter and can hang all IOs under that blkg. To nip the adverse interaction early, this removes the rq_qos_cleanup() callback in iolatency in favor of cleaning up always on the rq_qos_done_bio() path. Fixes: a3fb01ba ("blk-iolatency: only account submitted bios") Debugged-by:
Tejun Heo <tj@kernel.org> Debugged-by:
Josef Bacik <josef@toxicpanda.com> Signed-off-by:
Dennis Zhou <dennis@kernel.org> Signed-off-by:
Jens Axboe <axboe@kernel.dk> Signed-off-by:
-
Liu Bo authored
[ Upstream commit 391f552a ] This is to catch any unexpected negative value of inflight IO counter. Signed-off-by:
Liu Bo <bo.liu@linux.alibaba.com> Signed-off-by:
-
Dexuan Cui authored
[ Upstream commit 685703b4 ] There is a race condition for an established connection that is being closed by the guest: the refcnt is 4 at the end of hvs_release() (Note: here the 'remove_sock' is false): 1 for the initial value; 1 for the sk being in the bound list; 1 for the sk being in the connected list; 1 for the delayed close_work. After hvs_release() finishes, __vsock_release() -> sock_put(sk) *may* decrease the refcnt to 3. Concurrently, hvs_close_connection() runs in another thread: calls vsock_remove_sock() to decrease the refcnt by 2; call sock_put() to decrease the refcnt to 0, and free the sk; next, the "release_sock(sk)" may hang due to use-after-free. In the above, after hvs_release() finishes, if hvs_close_connection() runs faster than "__vsock_release() -> sock_put(sk)", then there is not any issue, because at the beginning of hvs_close_connection(), the refcnt is still 4. The issue can be resolved if an extra reference is taken when the connection is established. Fixes: a9eeb998 ("hv_sock: Add support for delayed close") Signed-off-by:
Sunil Muthuswamy <sunilmut@microsoft.com> Signed-off-by:
-
Sven Eckelmann authored
commit a15d56a6 upstream. Multiple batadv_ogm_packet can be stored in an skbuff. The functions batadv_iv_ogm_send_to_if()/batadv_iv_ogm_receive() use batadv_iv_ogm_aggr_packet() to check if there is another additional batadv_ogm_packet in the skb or not before they continue processing the packet. The length for such an OGM is BATADV_OGM_HLEN + batadv_ogm_packet->tvlv_len. The check must first check that at least BATADV_OGM_HLEN bytes are available before it accesses tvlv_len (which is part of the header. Otherwise it might try read outside of the currently available skbuff to get the content of tvlv_len. Fixes: ef261577 ("batman-adv: tvlv - basic infrastructure") Reported-by: syzbot+355cab184197dbbfa384@syzkaller.appspotmail.com Signed-off-by:
Sven Eckelmann <sven@narfation.org> Acked-by:
Antonio Quartulli <a@unstable.cc> Signed-off-by:
Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by:
-
Eric Dumazet authored
commit 3ee1bb7a upstream. batadv_netlink_get_ifindex() needs to make sure user passed a correct u32 attribute. syzbot reported : BUG: KMSAN: uninit-value in batadv_netlink_dump_hardif+0x70d/0x880 net/batman-adv/netlink.c:968 CPU: 1 PID: 11705 Comm: syz-executor888 Not tainted 5.1.0+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x191/0x1f0 lib/dump_stack.c:113 kmsan_report+0x130/0x2a0 mm/kmsan/kmsan.c:622 __msan_warning+0x75/0xe0 mm/kmsan/kmsan_instr.c:310 batadv_netlink_dump_hardif+0x70d/0x880 net/batman-adv/netlink.c:968 genl_lock_dumpit+0xc6/0x130 net/netlink/genetlink.c:482 netlink_dump+0xa84/0x1ab0 net/netlink/af_netlink.c:2253 __netlink_dump_start+0xa3a/0xb30 net/netlink/af_netlink.c:2361 genl_family_rcv_msg net/netlink/genetlink.c:550 [inline] genl_rcv_msg+0xfc1/0x1a40 net/netlink/genetlink.c:627 netlink_rcv_skb+0x431/0x620 net/netlink/af_netlink.c:2486 genl_rcv+0x63/0x80 net/netlink/genetlink.c:638 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline] netlink_unicast+0xf3e/0x1020 net/netlink/af_netlink.c:1337 netlink_sendmsg+0x127e/0x12f0 net/netlink/af_netlink.c:1926 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg net/socket.c:661 [inline] ___sys_sendmsg+0xcc6/0x1200 net/socket.c:2260 __sys_sendmsg net/socket.c:2298 [inline] __do_sys_sendmsg net/socket.c:2307 [inline] __se_sys_sendmsg+0x305/0x460 net/socket.c:2305 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2305 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x440209 Fixes: b60620cf ("batman-adv: netlink: hardif query") Signed-off-by:
Eric Dumazet <edumazet@google.com> Reported-by:
syzbot <syzkaller@googlegroups.com> Signed-off-by:
-
Gustavo Romero authored
commit 8205d5d9 upstream. When we take an FP unavailable exception in a transaction we have to account for the hardware FP TM checkpointed registers being incorrect. In this case for this process we know the current and checkpointed FP registers must be the same (since FP wasn't used inside the transaction) hence in the thread_struct we copy the current FP registers to the checkpointed ones. This copy is done in tm_reclaim_thread(). We use thread->ckpt_regs.msr to determine if FP was on when in userspace. thread->ckpt_regs.msr represents the state of the MSR when exiting userspace. This is setup by check_if_tm_restore_required(). Unfortunatley there is an optimisation in giveup_all() which returns early if tsk->thread.regs->msr (via local variable `usermsr`) has FP=VEC=VSX=SPE=0. This optimisation means that check_if_tm_restore_required() is not called and hence thread->ckpt_regs.msr is not updated and will contain an old value. This can happen if due to load_fp=255 we start a userspace process with MSR FP=1 and then we are context switched out. In this case thread->ckpt_regs.msr will contain FP=1. If that same process is then context switched in and load_fp overflows, MSR will have FP=0. If that process now enters a transaction and does an FP instruction, the FP unavailable will not update thread->ckpt_regs.msr (the bug) and MSR FP=1 will be retained in thread->ckpt_regs.msr. tm_reclaim_thread() will then not perform the required memcpy and the checkpointed FP regs in the thread struct will contain the wrong values. The code path for this happening is: Userspace: Kernel Start userspace with MSR FP/VEC/VSX/SPE=0 TM=1 < ----- ... tbegin bne fp instruction FP unavailable ---- > fp_unavailable_tm() tm_reclaim_current() tm_reclaim_thread() giveup_all() return early since FP/VMX/VSX=0 /* ckpt MSR not updated (Incorrect) */ tm_reclaim() /* thread_struct ckpt FP regs contain junk (OK) */ /* Sees ckpt MSR FP=1 (Incorrect) */ no memcpy() performed /* thread_struct ckpt FP regs not fixed (Incorrect) */ tm_recheckpoint() /* Put junk in hardware checkpoint FP regs */ .... < ----- Return to userspace with MSR TM=1 FP=1 with junk in the FP TM checkpoint TM rollback reads FP junk This is a data integrity problem for the current process as the FP registers are corrupted. It's also a security problem as the FP registers from one process may be leaked to another. This patch moves up check_if_tm_restore_required() in giveup_all() to ensure thread->ckpt_regs.msr is updated correctly. A simple testcase to replicate this will be posted to tools/testing/selftests/powerpc/tm/tm-poison.c Similarly for VMX. This fixes CVE-2019-15030. Fixes: f48e91e8 ("powerpc/tm: Fix FP and VMX register corruption") Cc: stable@vger.kernel.org # 4.12+ Signed-off-by:
Gustavo Romero <gromero@linux.vnet.ibm.com> Signed-off-by:
Michael Neuling <mikey@neuling.org> Signed-off-by:
-
Tiwei Bie authored
commit 264b563b upstream. Since vhost_exceeds_weight() was introduced, callers need to specify the packet weight and byte weight in vhost_dev_init(). Note that, the packet weight isn't counted in this patch to keep the original behavior unchanged. Fixes: e82b9b07 ("vhost: introduce vhost_exceeds_weight()") Cc: stable@vger.kernel.org Signed-off-by:
Tiwei Bie <tiwei.bie@intel.com> Signed-off-by:
Michael S. Tsirkin <mst@redhat.com> Acked-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
-
Tiwei Bie authored
commit 93d2c4de upstream. Since below commit, callers need to specify the iov_limit in vhost_dev_init() explicitly. Fixes: b46a0bf7 ("vhost: fix OOB in get_rx_bufs()") Cc: stable@vger.kernel.org Signed-off-by:
-
Dan Carpenter authored
commit 08b0c891 upstream. We recently added a kfree() after the end of the loop: if (retries == RETRIES) { kfree(reply); return -EINVAL; } There are two problems. First the test is wrong and because retries equals RETRIES if we succeed on the last iteration through the loop. Second if we fail on the last iteration through the loop then the kfree is a double free. When you're reading this code, please note the break statement at the end of the while loop. This patch changes the loop so that if it's not successful then "reply" is NULL and we can test for that afterward. Cc: <stable@vger.kernel.org> Fixes: 6b7c3b86 ("drm/vmwgfx: fix memory leak when too many retries have occurred") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by:
Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by:
-
Liangyan authored
commit 5e2d2cc2 upstream. do_sched_cfs_period_timer() will refill cfs_b runtime and call distribute_cfs_runtime to unthrottle cfs_rq, sometimes cfs_b->runtime will allocate all quota to one cfs_rq incorrectly, then other cfs_rqs attached to this cfs_b can't get runtime and will be throttled. We find that one throttled cfs_rq has non-negative cfs_rq->runtime_remaining and cause an unexpetced cast from s64 to u64 in snippet: distribute_cfs_runtime() { runtime = -cfs_rq->runtime_remaining + 1; } The runtime here will change to a large number and consume all cfs_b->runtime in this cfs_b period. According to Ben Segall, the throttled cfs_rq can have account_cfs_rq_runtime called on it because it is throttled before idle_balance, and the idle_balance calls update_rq_clock to add time that is accounted to the task. This commit prevents cfs_rq to be assgined new runtime if it has been throttled until that distribute_cfs_runtime is called. Signed-off-by:
Liangyan <liangyan.peng@linux.alibaba.com> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by:
Valentin Schneider <valentin.schneider@arm.com> Reviewed-by:
Ben Segall <bsegall@google.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: shanpeic@linux.alibaba.com Cc: stable@vger.kernel.org Cc: xlpang@linux.alibaba.com Fixes: d3d9dc33 ("sched: Throttle entities exceeding their allowed bandwidth") Link: https://lkml.kernel.org/r/20190826121633.6538-1-liangyan.peng@linux.alibaba.comSigned-off-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
-
Hui Wang authored
commit 2a36c16e upstream. This ThinkCentre machine has a new realtek codec alc222, it is not in the support list, we add it in the realtek.c then this machine can apply FIXUPs for the realtek codec. And this machine has two front mics which can't be handled by PA so far, it uses the pin 0x18 and 0x19 as the front mics, as a result the existing FIXUP ALC294_FIXUP_LENOVO_MIC_LOCATION doesn't work on this machine. Fortunately another FIXUP ALC283_FIXUP_HEADSET_MIC also can change the location for one of the two mics on this machine. Link: https://lore.kernel.org/r/20190904055327.9883-1-hui.wang@canonical.comSigned-off-by:
Hui Wang <hui.wang@canonical.com> Cc: <stable@vger.kernel.org> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
-
Jian-Hong Pan authored
commit 60083f9e upstream. Original pin node values of ASUS UX431FL with ALC294: 0x12 0xb7a60140 0x13 0x40000000 0x14 0x90170110 0x15 0x411111f0 0x16 0x411111f0 0x17 0x90170111 0x18 0x411111f0 0x19 0x411111f0 0x1a 0x411111f0 0x1b 0x411111f0 0x1d 0x4066852d 0x1e 0x411111f0 0x1f 0x411111f0 0x21 0x04211020 1. Has duplicated internal speakers (0x14 & 0x17) which makes the output route become confused. So, the output volume cannot be changed by setting. 2. Misses the headset mic pin node. This patch disables the confusing speaker (NID 0x14) and enables the headset mic (NID 0x19). Link: https://lore.kernel.org/r/20190902100054.6941-1-jian-hong@endlessm.comSigned-off-by:
Jian-Hong Pan <jian-hong@endlessm.com> Cc: <stable@vger.kernel.org> Signed-off-by:
-
Sam Bazley authored
commit d33cd42d upstream. HP Pavilion 15 (AMD Ryzen-based model) with 103c:84e7 needs the same quirk like HP Envy/Spectre x360 for enabling the mute LED over Mic3 pin. [ rearranged in the SSID number order by tiwai ] Signed-off-by:
Sam Bazley <sambazley@fastmail.com> Cc: <stable@vger.kernel.org> Signed-off-by:
-
Takashi Iwai authored
commit 89781d08 upstream. The recent change to shuffle the codec initialization procedure for Realtek via commit 607ca3bd ("ALSA: hda/realtek - EAPD turn on later") caused the silent output on some machines. This change was supposed to be safe, but it isn't actually; some devices have quirk setups to override the EAPD via COEF or BTL in the additional verb table, which is applied at the beginning of snd_hda_gen_init(). And this EAPD setup is again overridden in alc_auto_init_amp(). For recovering from the regression, tell snd_hda_gen_init() not to apply the verbs there by a new flag, then apply the verbs in alc_init(). BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=204727 Fixes: 607ca3bd ("ALSA: hda/realtek - EAPD turn on later") Cc: <stable@vger.kernel.org> Signed-off-by:
-
Takashi Iwai authored
commit 333f3143 upstream. Since the chained quirks via chained_before flag is applied before the depth check, it may lead to the endless recursive calls, when the chain were set up incorrectly. Fix it by moving the depth check at the beginning of the loop. Fixes: 1f578250 ("ALSA: hda - Add chained_before flag to the fixup entry") Cc: <stable@vger.kernel.org> Signed-off-by:
-
- 10 Sep, 2019 5 commits
-
-
Greg Kroah-Hartman authored
-
Linus Torvalds authored
[ Upstream commit 950b07c1 ] This reverts commit 558682b5. Chris Wilson reports that it breaks his CPU hotplug test scripts. In particular, it breaks offlining and then re-onlining the boot CPU, which we treat specially (and the BIOS does too). The symptoms are that we can offline the CPU, but it then does not come back online again: smpboot: CPU 0 is now offline smpboot: Booting Node 0 Processor 0 APIC 0x0 smpboot: do_boot_cpu failed(-1) to wakeup CPU#0 Thomas says he knows why it's broken (my personal suspicion: our magic handling of the "cpu0_logical_apicid" thing), but for 5.3 the right fix is to just revert it, since we've never touched the LDR bits before, and it's not worth the risk to do anything else at this stage. [ Hotpluging of the boot CPU is special anyway, and should be off by default. See the "BOOTPARAM_HOTPLUG_CPU0" config option and the cpu0_hotplug kernel parameter. In general you should not do it, and it has various known limitations (hibernate and suspend require the boot CPU, for example). But it should work, even if the boot CPU is special and needs careful treatment - Linus ] Link: https://lore.kernel.org/lkml/156785100521.13300.14461504732265570003@skylake-alporthouse-com/Reported-by:
Chris Wilson <chris@chris-wilson.co.uk> Acked-by:
-
Luis Henriques authored
[ Upstream commit 5c498950 ] Signed-off-by:
Luis Henriques <lhenriques@suse.com> Reviewed-by:
Jeff Layton <jlayton@kernel.org> Signed-off-by:
Ilya Dryomov <idryomov@gmail.com> Signed-off-by:
-
Kirill A. Shutemov authored
[ Upstream commit c96e8483 ] Gustavo noticed that 'new' can be left uninitialized if 'bios_start' happens to be less or equal to 'entry->addr + entry->size'. Initialize the variable at the begin of the iteration to the current value of 'bios_start'. Fixes: 0a46fff2 ("x86/boot/compressed/64: Fix boot on machines with broken E820 table") Reported-by:
"Gustavo A. R. Silva" <gustavo@embeddedor.com> Signed-off-by:
Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by:
-
Andre Przywara authored
[ Upstream commit 2e16f3e9 ] At the moment we initialise the target *mask* of a virtual IRQ to the VCPU it belongs to, even though this mask is only defined for GICv2 and quickly runs out of bits for many GICv3 guests. This behaviour triggers an UBSAN complaint for more than 32 VCPUs: ------ [ 5659.462377] UBSAN: Undefined behaviour in virt/kvm/arm/vgic/vgic-init.c:223:21 [ 5659.471689] shift exponent 32 is too large for 32-bit type 'unsigned int' ------ Also for GICv3 guests the reporting of TARGET in the "vgic-state" debugfs dump is wrong, due to this very same problem. Because there is no requirement to create the VGIC device before the VCPUs (and QEMU actually does it the other way round), we can't safely initialise mpidr or targets in kvm_vgic_vcpu_init(). But since we touch every private IRQ for each VCPU anyway later (in vgic_init()), we can just move the initialisation of those fields into there, where we definitely know the VGIC type. On the way make sure we really have either a VGICv2 or a VGICv3 device, since the existing code is just checking for "VGICv3 or not", silently ignoring the uninitialised case. Signed-off-by:
Andre Przywara <andre.przywara@arm.com> Reported-by:
Dave Martin <dave.martin@arm.com> Tested-by:
Julien Grall <julien.grall@arm.com> Signed-off-by:
Marc Zyngier <maz@kernel.org> Signed-off-by:
-
