This is the start of the stable review cycle for the 4.9.306 release. There are 38 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.
Responses should be made by Sat, 12 Mar 2022 14:07:58 +0000. Anything received after that time might be too late.
The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.9.306-rc2... or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.9.y and the diffstat can be found below.
thanks,
greg k-h
------------- Pseudo-Shortlog of commits:
Greg Kroah-Hartman gregkh@linuxfoundation.org Linux 4.9.306-rc2
Juergen Gross jgross@suse.com xen/netfront: react properly to failing gnttab_end_foreign_access_ref()
Juergen Gross jgross@suse.com xen/gnttab: fix gnttab_end_foreign_access() without page specified
Juergen Gross jgross@suse.com xen: remove gnttab_query_foreign_access()
Juergen Gross jgross@suse.com xen/gntalloc: don't use gnttab_query_foreign_access()
Juergen Gross jgross@suse.com xen/scsifront: don't use gnttab_query_foreign_access() for mapped status
Juergen Gross jgross@suse.com xen/netfront: don't use gnttab_query_foreign_access() for mapped status
Juergen Gross jgross@suse.com xen/blkfront: don't use gnttab_query_foreign_access() for mapped status
Juergen Gross jgross@suse.com xen/grant-table: add gnttab_try_end_foreign_access()
Juergen Gross jgross@suse.com xen/xenbus: don't let xenbus_grant_ring() remove grants in error case
Russell King (Oracle) rmk+kernel@armlinux.org.uk ARM: fix build warning in proc-v7-bugs.c
WANG Chao chao.wang@ucloud.cn x86, modpost: Replace last remnants of RETPOLINE with CONFIG_RETPOLINE
Masahiro Yamada yamada.masahiro@socionext.com x86/build: Fix compiler support check for CONFIG_RETPOLINE
Nathan Chancellor nathan@kernel.org ARM: Do not use NOCROSSREFS directive with ld.lld
Russell King (Oracle) rmk+kernel@armlinux.org.uk ARM: fix co-processor register typo
Emmanuel Gil Peyrot linkmauve@linkmauve.fr ARM: fix build error when BPF_SYSCALL is disabled
Russell King (Oracle) rmk+kernel@armlinux.org.uk ARM: include unprivileged BPF status in Spectre V2 reporting
Russell King (Oracle) rmk+kernel@armlinux.org.uk ARM: Spectre-BHB workaround
Russell King (Oracle) rmk+kernel@armlinux.org.uk ARM: use LOADADDR() to get load address of sections
Russell King (Oracle) rmk+kernel@armlinux.org.uk ARM: early traps initialisation
Russell King (Oracle) rmk+kernel@armlinux.org.uk ARM: report Spectre v2 status through sysfs
Mark Rutland mark.rutland@arm.com arm/arm64: smccc/psci: add arm_smccc_1_1_get_conduit()
Steven Price steven.price@arm.com arm/arm64: Provide a wrapper for SMCCC 1.1 calls
Josh Poimboeuf jpoimboe@redhat.com x86/speculation: Warn about eIBRS + LFENCE + Unprivileged eBPF + SMT
Josh Poimboeuf jpoimboe@redhat.com x86/speculation: Warn about Spectre v2 LFENCE mitigation
Kim Phillips kim.phillips@amd.com x86/speculation: Update link to AMD speculation whitepaper
Kim Phillips kim.phillips@amd.com x86/speculation: Use generic retpoline by default on AMD
Josh Poimboeuf jpoimboe@redhat.com x86/speculation: Include unprivileged eBPF status in Spectre v2 mitigation reporting
Peter Zijlstra peterz@infradead.org Documentation/hw-vuln: Update spectre doc
Peter Zijlstra peterz@infradead.org x86/speculation: Add eIBRS + Retpoline options
Peter Zijlstra (Intel) peterz@infradead.org x86/speculation: Rename RETPOLINE_AMD to RETPOLINE_LFENCE
Peter Zijlstra peterz@infradead.org x86,bugs: Unconditionally allow spectre_v2=retpoline,amd
Borislav Petkov bp@suse.de x86/speculation: Merge one test in spectre_v2_user_select_mitigation()
Lukas Bulwahn lukas.bulwahn@gmail.com Documentation: refer to config RANDOMIZE_BASE for kernel address-space randomization
Josh Poimboeuf jpoimboe@redhat.com Documentation: Add swapgs description to the Spectre v1 documentation
Tim Chen tim.c.chen@linux.intel.com Documentation: Add section about CPU vulnerabilities for Spectre
Zhenzhong Duan zhenzhong.duan@oracle.com x86/retpoline: Remove minimal retpoline support
Zhenzhong Duan zhenzhong.duan@oracle.com x86/retpoline: Make CONFIG_RETPOLINE depend on compiler support
Zhenzhong Duan zhenzhong.duan@oracle.com x86/speculation: Add RETPOLINE_AMD support to the inline asm CALL_NOSPEC variant
-------------
Diffstat:
Documentation/hw-vuln/index.rst | 1 + Documentation/hw-vuln/spectre.rst | 785 +++++++++++++++++++++++++++++++ Documentation/kernel-parameters.txt | 8 +- Makefile | 4 +- arch/arm/include/asm/assembler.h | 10 + arch/arm/include/asm/spectre.h | 32 ++ arch/arm/kernel/Makefile | 2 + arch/arm/kernel/entry-armv.S | 79 +++- arch/arm/kernel/entry-common.S | 24 + arch/arm/kernel/spectre.c | 71 +++ arch/arm/kernel/traps.c | 65 ++- arch/arm/kernel/vmlinux-xip.lds.S | 45 +- arch/arm/kernel/vmlinux.lds.S | 45 +- arch/arm/mm/Kconfig | 11 + arch/arm/mm/proc-v7-bugs.c | 199 ++++++-- arch/x86/Kconfig | 4 - arch/x86/Makefile | 11 +- arch/x86/include/asm/cpufeatures.h | 2 +- arch/x86/include/asm/nospec-branch.h | 41 +- arch/x86/kernel/cpu/bugs.c | 225 ++++++--- drivers/block/xen-blkfront.c | 67 +-- drivers/firmware/psci.c | 15 + drivers/net/xen-netfront.c | 54 ++- drivers/scsi/xen-scsifront.c | 3 +- drivers/xen/gntalloc.c | 25 +- drivers/xen/grant-table.c | 59 ++- drivers/xen/xenbus/xenbus_client.c | 24 +- include/linux/arm-smccc.h | 74 +++ include/linux/bpf.h | 11 + include/linux/compiler-gcc.h | 2 +- include/linux/module.h | 2 +- include/xen/grant_table.h | 19 +- kernel/sysctl.c | 8 + scripts/mod/modpost.c | 2 +- tools/arch/x86/include/asm/cpufeatures.h | 2 +- 35 files changed, 1763 insertions(+), 268 deletions(-)