linux-stable.git/Makefile, branch v5.4.97 Linux kernel stable tree Linux 5.4.97 2021-02-10T08:25:33+00:00 Greg Kroah-Hartman gregkh@linuxfoundation.org 2021-02-10T08:25:33+00:00 5e1942063dc3633f7a127aa2b159c13507580d21 Tested-by: Florian Fainelli <f.fainelli@gmail.com> Tested-by: Shuah Khan <skhan@linuxfoundation.org> Tested-by: Linux Kernel Functional Testing <lkft@linaro.org> Tested-by: Igor Matheus Andrade Torrente <igormtorrente@gmail.com> Tested-by: Jason Self <jason@bluehome.net> Tested-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Ross Schmidt <ross.schm.dev@gmail.com> Link: https://lore.kernel.org/r/20210208145810.230485165@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Shuah Khan <skhan@linuxfoundation.org>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Igor Matheus Andrade Torrente <igormtorrente@gmail.com>
Tested-by: Jason Self <jason@bluehome.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Ross Schmidt <ross.schm.dev@gmail.com>
Link: https://lore.kernel.org/r/20210208145810.230485165@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
x86/build: Disable CET instrumentation in the kernel 2021-02-10T08:25:32+00:00 Josh Poimboeuf jpoimboe@redhat.com 2021-01-28T21:52:19+00:00 bc1a3aeeff0ff3719a9758d27a03283ff413b08a commit 20bf2b378729c4a0366a53e2018a0b70ace94bcd upstream. With retpolines disabled, some configurations of GCC, and specifically the GCC versions 9 and 10 in Ubuntu will add Intel CET instrumentation to the kernel by default. That breaks certain tracing scenarios by adding a superfluous ENDBR64 instruction before the fentry call, for functions which can be called indirectly. CET instrumentation isn't currently necessary in the kernel, as CET is only supported in user space. Disable it unconditionally and move it into the x86's Makefile as CET/CFI... enablement should be a per-arch decision anyway. [ bp: Massage and extend commit message. ] Fixes: 29be86d7f9cb ("kbuild: add -fcf-protection=none when using retpoline flags") Reported-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Tested-by: Nikolay Borisov <nborisov@suse.com> Cc: <stable@vger.kernel.org> Cc: Seth Forshee <seth.forshee@canonical.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Link: https://lkml.kernel.org/r/20210128215219.6kct3h2eiustncws@treble Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 20bf2b378729c4a0366a53e2018a0b70ace94bcd upstream.

With retpolines disabled, some configurations of GCC, and specifically
the GCC versions 9 and 10 in Ubuntu will add Intel CET instrumentation
to the kernel by default. That breaks certain tracing scenarios by
adding a superfluous ENDBR64 instruction before the fentry call, for
functions which can be called indirectly.

CET instrumentation isn't currently necessary in the kernel, as CET is
only supported in user space. Disable it unconditionally and move it
into the x86's Makefile as CET/CFI... enablement should be a per-arch
decision anyway.

 [ bp: Massage and extend commit message. ]

Fixes: 29be86d7f9cb ("kbuild: add -fcf-protection=none when using retpoline flags")
Reported-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Tested-by: Nikolay Borisov <nborisov@suse.com>
Cc: <stable@vger.kernel.org>
Cc: Seth Forshee <seth.forshee@canonical.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Link: https://lkml.kernel.org/r/20210128215219.6kct3h2eiustncws@treble
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux 5.4.96 2021-02-07T14:35:50+00:00 Greg Kroah-Hartman gregkh@linuxfoundation.org 2021-02-07T14:35:50+00:00 d4716ee8751bf8dabf5872ba008124a0979a5f94 Tested-by: Igor Matheus Andrade Torrente <igormtorrente@gmail.com> Tested-by: Florian Fainelli <f.fainelli@gmail.com> Tested-by: Linux Kernel Functional Testing <lkft@linaro.org> Tested-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20210205140652.348864025@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Tested-by: Igor Matheus Andrade Torrente <igormtorrente@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210205140652.348864025@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux 5.4.95 2021-02-03T22:26:02+00:00 Greg Kroah-Hartman gregkh@linuxfoundation.org 2021-02-03T22:26:02+00:00 e89428970c23011a2679121c56e9f54f654c6602 Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Linux Kernel Functional Testing <lkft@linaro.org> Tested-by: Shuah Khan <skhan@linuxfoundation.org> Tested-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20210202132946.480479453@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Shuah Khan <skhan@linuxfoundation.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210202132946.480479453@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux 5.4.94 2021-01-30T12:54:11+00:00 Greg Kroah-Hartman gregkh@linuxfoundation.org 2021-01-30T12:54:11+00:00 0fbca6ce4174724f28be5268c5d210f51ed96e31 Link: https://lore.kernel.org/r/20210129105910.132680016@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Link: https://lore.kernel.org/r/20210129105910.132680016@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux 5.4.93 2021-01-27T10:47:55+00:00 Greg Kroah-Hartman gregkh@linuxfoundation.org 2021-01-27T10:47:55+00:00 131f8d8a889a5ca66a835eea82bba043ac91a7cf Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Shuah Khan <skhan@linuxfoundation.org> Tested-by: Linux Kernel Functional Testing <lkft@linaro.org> Link: https://lore.kernel.org/r/20210126111748.320806573@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Shuah Khan <skhan@linuxfoundation.org>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Link: https://lore.kernel.org/r/20210126111748.320806573@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux 5.4.92 2021-01-23T14:58:01+00:00 Greg Kroah-Hartman gregkh@linuxfoundation.org 2021-01-23T14:58:01+00:00 09f983f0c7fc0db79a5f6c883ec3510d424c369c Tested-by: Shuah Khan <skhan@linuxfoundation.org> Tested-by: Linux Kernel Functional Testing <lkft@linaro.org> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20210122135733.565501039@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Tested-by: Shuah Khan <skhan@linuxfoundation.org>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210122135733.565501039@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux 5.4.91 2021-01-19T17:26:19+00:00 Greg Kroah-Hartman gregkh@linuxfoundation.org 2021-01-19T17:26:19+00:00 d26b3110041a9fddc6c6e36398f53f7eab8cff82 Tested-by: Linux Kernel Functional Testing <lkft@linaro.org> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20210118152457.528300594@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210118152457.528300594@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
kbuild: enforce -Werror=return-type 2021-01-19T17:26:11+00:00 Olaf Hering olaf@aepfle.de 2020-10-11T18:54:31+00:00 bb562e6e0358fe0ecf6853f28dab615e90389f9a commit 172aad81a882443eefe1bd860c4eddc81b14dd5b upstream. Catch errors which at least gcc tolerates by default: warning: 'return' with no value, in function returning non-void [-Wreturn-type] Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 172aad81a882443eefe1bd860c4eddc81b14dd5b upstream.

Catch errors which at least gcc tolerates by default:
 warning: 'return' with no value, in function returning non-void [-Wreturn-type]

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux 5.4.90 2021-01-17T13:05:38+00:00 Greg Kroah-Hartman gregkh@linuxfoundation.org 2021-01-17T13:05:38+00:00 ceed81a883dc43e2073ecdcfd273fa179e24df5b Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Shuah Khan <skhan@linuxfoundation.org> Tested-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Linux Kernel Functional Testing <lkft@linaro.org> Link: https://lore.kernel.org/r/20210115121958.391610178@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Shuah Khan <skhan@linuxfoundation.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Link: https://lore.kernel.org/r/20210115121958.391610178@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>