Re: [PATCH v5 13/36] vmlinux.lds.h: add PGO and AutoFDO input sections

[Nick Desaulniers <ndesaulniers@google.com>]

Thanks for the report. We can provide manual backports then.  Our
prodkernel and CrOS teams both hit this issue within the past month.

On Wed, Aug 5, 2020 at 6:24 PM Sasha Levin <sashal@kernel.org> wrote:
>
> Hi
>
> [This is an automated email]
>
> This commit has been processed because it contains a -stable tag.
> The stable tag indicates that it's relevant for the following trees: all
>
> The bot has tested the following trees: v5.7.11, v5.4.54, v4.19.135, v4.14.190, v4.9.231, v4.4.231.
>
> v5.7.11: Failed to apply! Possible dependencies:
>     655389666643 ("vmlinux.lds.h: Create section for protection against instrumentation")
>
> v5.4.54: Failed to apply! Possible dependencies:
>     441110a547f8 ("vmlinux.lds.h: Provide EMIT_PT_NOTE to indicate export of .notes")
>     6434efbd9aef ("s390: Move RO_DATA into "text" PT_LOAD Program Header")
>     655389666643 ("vmlinux.lds.h: Create section for protection against instrumentation")
>     6fc4000656a1 ("powerpc: Remove PT_NOTE workaround")
>     7a42d41d9dc2 ("x86/vmlinux: Restore "text" Program Header with dummy section")
>     eaf937075c9a ("vmlinux.lds.h: Move NOTES into RO_DATA")
>     fbe6a8e618a2 ("vmlinux.lds.h: Move Program Header restoration into NOTES macro")
>
> v4.19.135: Failed to apply! Possible dependencies:
>     15426ca43d88 ("s390: rescue initrd as early as possible")
>     369f91c37451 ("s390/decompressor: rework uncompressed image info collection")
>     3bad719b4954 ("powerpc/prom_init: Make of_workarounds static")
>     441110a547f8 ("vmlinux.lds.h: Provide EMIT_PT_NOTE to indicate export of .notes")
>     4e62d4588500 ("s390: clean up stacks setup")
>     5f69e38885c3 ("powerpc/prom_init: Move __prombss to it's own section and store it in .bss")
>     655389666643 ("vmlinux.lds.h: Create section for protection against instrumentation")
>     67361cf80712 ("powerpc/ftrace: Handle large kernel configs")
>     8f75582a2fb6 ("s390: remove decompressor's head.S")
>     d1b52a4388ff ("s390: introduce .boot.data section")
>     e63334e556d9 ("powerpc/prom_init: Replace __initdata with __prombss when applicable")
>     eaf937075c9a ("vmlinux.lds.h: Move NOTES into RO_DATA")
>     fbe6a8e618a2 ("vmlinux.lds.h: Move Program Header restoration into NOTES macro")
>
> v4.14.190: Failed to apply! Possible dependencies:
>     01417c6cc7dc ("powerpc/64: Change soft_enabled from flag to bitmask")
>     0b63acf4a0eb ("powerpc/64: Move set_soft_enabled() and rename")
>     1696d0fb7fcd ("powerpc/64: Set DSCR default initially from SPR")
>     4e26bc4a4ed6 ("powerpc/64: Rename soft_enabled to irq_soft_mask")
>     5080332c2c89 ("powerpc/64s: Add workaround for P9 vector CI load issue")
>     5633e85b2c31 ("powerpc64: Add .opd based function descriptor dereference")
>     655389666643 ("vmlinux.lds.h: Create section for protection against instrumentation")
>     67361cf80712 ("powerpc/ftrace: Handle large kernel configs")
>     9f83e00f4cc1 ("powerpc/64: Improve inline asm in arch_local_irq_disable")
>     ae30cc05bed2 ("powerpc64/ftrace: Implement support for ftrace_regs_caller()")
>     b5c1bd62c054 ("powerpc/64: Fix arch_local_irq_disable() prototype")
>     c2e480ba8227 ("powerpc/64: Add #defines for paca->soft_enabled flags")
>     ea678ac627e0 ("powerpc64/ftrace: Add a field in paca to disable ftrace in unsafe code paths")
>     ff967900c9d4 ("powerpc/64: Fix latency tracing for lazy irq replay")
>
> v4.9.231: Failed to apply! Possible dependencies:
>     096ff2ddba83 ("powerpc/ftrace/64: Split further based on -mprofile-kernel")
>     2f59be5b970b ("powerpc/ftrace: Restore LR from pt_regs")
>     454656155110 ("powerpc/asm: Use OFFSET macro in asm-offsets.c")
>     5633e85b2c31 ("powerpc64: Add .opd based function descriptor dereference")
>     655389666643 ("vmlinux.lds.h: Create section for protection against instrumentation")
>     67361cf80712 ("powerpc/ftrace: Handle large kernel configs")
>     700e64377c2c ("powerpc/ftrace: Move stack setup and teardown code into ftrace_graph_caller()")
>     7853f9c029ac ("powerpc: Split ftrace bits into a separate file")
>     99ad503287da ("powerpc: Add a prototype for mcount() so it can be versioned")
>     a97a65d53d9f ("KVM: PPC: Book3S: 64-bit CONFIG_RELOCATABLE support for interrupts")
>     ae30cc05bed2 ("powerpc64/ftrace: Implement support for ftrace_regs_caller()")
>     b3a7864c6feb ("powerpc/ftrace: Add prototype for prepare_ftrace_return()")
>     c02e0349d7e9 ("powerpc/ftrace: Fix the comments for ftrace_modify_code")
>     c4f3b52ce7b1 ("powerpc/64s: Disallow system reset vs system reset reentrancy")
>     d3918e7fd4a2 ("KVM: PPC: Book3S: Change interrupt call to reduce scratch space use on HV")
>     ea678ac627e0 ("powerpc64/ftrace: Add a field in paca to disable ftrace in unsafe code paths")
>
> v4.4.231: Failed to apply! Possible dependencies:
>     0f4c4af06eec ("kbuild: -ffunction-sections fix for archs with conflicting sections")
>     2aedcd098a94 ("kbuild: suppress annoying "... is up to date." message")
>     9895c03d4811 ("kbuild: record needed exported symbols for modules")
>     a5967db9af51 ("kbuild: allow architectures to use thin archives instead of ld -r")
>     b67067f1176d ("kbuild: allow archs to select link dead code/data elimination")
>     b9ab5ebb14ec ("objtool: Add CONFIG_STACK_VALIDATION option")
>     c1a95fda2a40 ("kbuild: add fine grained build dependencies for exported symbols")
>     cb87481ee89d ("kbuild: linker script do not match C names unless LD_DEAD_CODE_DATA_ELIMINATION is configured")
>     cf4f21938e13 ("kbuild: Allow to specify composite modules with modname-m")
>     e4aca4595005 ("kbuild: de-duplicate fixdep usage")
>     f235541699bc ("export.h: allow for per-symbol configurable EXPORT_SYMBOL()")
>
>
> NOTE: The patch will not be queued to stable trees until it is upstream.
>
> How should we proceed with this patch?
>
> --
> Thanks
> Sasha



-- 
Thanks,
~Nick Desaulniers