From: Will Deacon <will@kernel.org> To: torvalds@linux-foundation.org Cc: catalin.marinas@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel-team@android.com Subject: [GIT PULL] arm64 fixes for -rc3 Date: Fri, 26 Jun 2020 14:21:32 +0100 [thread overview] Message-ID: <20200626132131.GA9750@willie-the-truck> (raw) Hi Linus, Please pull these arm64 fixes for -rc3. The big fix here is to our vDSO sigreturn trampoline as, after a painfully long stint of debugging, it turned out that fixing some of our CFI directives in the merge window lit up a bunch of logic in libgcc which has been shown to SEGV in some cases during asynchronous pthread cancellation. It looks like we can fix this by extending the directives to restore most of the interrupted register state from the sigcontext, but it's risky and hard to test so we opted to remove the CFI directives for now and rely on the unwinder fallback path like we used to. Cheers, Will --->8 The following changes since commit 24ebec25fb270100e252b19c288e21bd7d8cc7f7: arm64: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints (2020-06-18 11:10:00 +0100) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git tags/arm64-fixes for you to fetch changes up to 108447fd0d1a34b0929cd26dc637c917a734ebab: arm64: Add KRYO{3,4}XX silver CPU cores to SSB safelist (2020-06-25 20:18:57 +0100) ---------------------------------------------------------------- arm64 fixes for -rc3 - Fix unwinding through vDSO sigreturn trampoline - Fix build warnings by raising minimum LD version for PAC - Whitelist some Kryo Cortex-A55 derivatives for Meltdown and SSB - Fix perf register PC reporting for compat tasks - Fix 'make clean' warning for arm64 signal selftests - Fix ftrace when BTI is compiled in - Avoid building the compat vDSO using GCC plugins ---------------------------------------------------------------- Alexander Popov (1): arm64: vdso: Don't use gcc plugins for building vgettimeofday.c Jean-Philippe Brucker (1): arm64: Don't insert a BTI instruction at inner labels Jiping Ma (1): arm64: perf: Report the PC value in REGS_ABI_32 mode Mark Brown (2): arm64: Depend on newer binutils when building PAC kselftest: arm64: Remove redundant clean target Sai Prakash Ranjan (2): arm64: kpti: Add KRYO{3, 4}XX silver CPU cores to kpti safelist arm64: Add KRYO{3,4}XX silver CPU cores to SSB safelist Will Deacon (5): arm64: vdso: Disable dwarf unwinding through the sigreturn trampoline arm64: compat: Allow 32-bit vdso and sigpage to co-exist arm64: compat: Always use sigpage for sigreturn trampoline arm64: compat: Remove 32-bit sigreturn code from the vDSO arm64: vdso: Only pass --no-eh-frame-hdr when linker supports it arch/arm64/Kconfig | 4 +- arch/arm64/include/asm/linkage.h | 6 --- arch/arm64/include/asm/mmu.h | 3 ++ arch/arm64/kernel/Makefile | 2 - arch/arm64/kernel/cpu_errata.c | 2 + arch/arm64/kernel/cpufeature.c | 2 + arch/arm64/kernel/perf_regs.c | 25 +++++++++-- arch/arm64/kernel/signal32.c | 27 +----------- arch/arm64/kernel/vdso.c | 61 ++++++++++++--------------- arch/arm64/kernel/vdso/Makefile | 7 +-- arch/arm64/kernel/vdso/sigreturn.S | 54 +++++++++++++++--------- arch/arm64/kernel/vdso32/Makefile | 1 - arch/arm64/kernel/vdso32/sigreturn.S | 58 ------------------------- arch/arm64/kernel/vdso32/vdso.lds.S | 12 ------ tools/testing/selftests/arm64/signal/Makefile | 4 -- 15 files changed, 98 insertions(+), 170 deletions(-) delete mode 100644 arch/arm64/kernel/vdso32/sigreturn.S
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will@kernel.org> To: torvalds@linux-foundation.org Cc: catalin.marinas@arm.com, kernel-team@android.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [GIT PULL] arm64 fixes for -rc3 Date: Fri, 26 Jun 2020 14:21:32 +0100 [thread overview] Message-ID: <20200626132131.GA9750@willie-the-truck> (raw) Hi Linus, Please pull these arm64 fixes for -rc3. The big fix here is to our vDSO sigreturn trampoline as, after a painfully long stint of debugging, it turned out that fixing some of our CFI directives in the merge window lit up a bunch of logic in libgcc which has been shown to SEGV in some cases during asynchronous pthread cancellation. It looks like we can fix this by extending the directives to restore most of the interrupted register state from the sigcontext, but it's risky and hard to test so we opted to remove the CFI directives for now and rely on the unwinder fallback path like we used to. Cheers, Will --->8 The following changes since commit 24ebec25fb270100e252b19c288e21bd7d8cc7f7: arm64: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints (2020-06-18 11:10:00 +0100) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git tags/arm64-fixes for you to fetch changes up to 108447fd0d1a34b0929cd26dc637c917a734ebab: arm64: Add KRYO{3,4}XX silver CPU cores to SSB safelist (2020-06-25 20:18:57 +0100) ---------------------------------------------------------------- arm64 fixes for -rc3 - Fix unwinding through vDSO sigreturn trampoline - Fix build warnings by raising minimum LD version for PAC - Whitelist some Kryo Cortex-A55 derivatives for Meltdown and SSB - Fix perf register PC reporting for compat tasks - Fix 'make clean' warning for arm64 signal selftests - Fix ftrace when BTI is compiled in - Avoid building the compat vDSO using GCC plugins ---------------------------------------------------------------- Alexander Popov (1): arm64: vdso: Don't use gcc plugins for building vgettimeofday.c Jean-Philippe Brucker (1): arm64: Don't insert a BTI instruction at inner labels Jiping Ma (1): arm64: perf: Report the PC value in REGS_ABI_32 mode Mark Brown (2): arm64: Depend on newer binutils when building PAC kselftest: arm64: Remove redundant clean target Sai Prakash Ranjan (2): arm64: kpti: Add KRYO{3, 4}XX silver CPU cores to kpti safelist arm64: Add KRYO{3,4}XX silver CPU cores to SSB safelist Will Deacon (5): arm64: vdso: Disable dwarf unwinding through the sigreturn trampoline arm64: compat: Allow 32-bit vdso and sigpage to co-exist arm64: compat: Always use sigpage for sigreturn trampoline arm64: compat: Remove 32-bit sigreturn code from the vDSO arm64: vdso: Only pass --no-eh-frame-hdr when linker supports it arch/arm64/Kconfig | 4 +- arch/arm64/include/asm/linkage.h | 6 --- arch/arm64/include/asm/mmu.h | 3 ++ arch/arm64/kernel/Makefile | 2 - arch/arm64/kernel/cpu_errata.c | 2 + arch/arm64/kernel/cpufeature.c | 2 + arch/arm64/kernel/perf_regs.c | 25 +++++++++-- arch/arm64/kernel/signal32.c | 27 +----------- arch/arm64/kernel/vdso.c | 61 ++++++++++++--------------- arch/arm64/kernel/vdso/Makefile | 7 +-- arch/arm64/kernel/vdso/sigreturn.S | 54 +++++++++++++++--------- arch/arm64/kernel/vdso32/Makefile | 1 - arch/arm64/kernel/vdso32/sigreturn.S | 58 ------------------------- arch/arm64/kernel/vdso32/vdso.lds.S | 12 ------ tools/testing/selftests/arm64/signal/Makefile | 4 -- 15 files changed, 98 insertions(+), 170 deletions(-) delete mode 100644 arch/arm64/kernel/vdso32/sigreturn.S _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2020-06-26 13:21 UTC|newest] Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-06-26 13:21 Will Deacon [this message] 2020-06-26 13:21 ` [GIT PULL] arm64 fixes for -rc3 Will Deacon 2020-06-27 16:00 ` pr-tracker-bot 2020-06-27 16:00 ` pr-tracker-bot -- strict thread matches above, loose matches on Subject: below -- 2024-02-02 11:11 Will Deacon 2024-02-02 11:11 ` Will Deacon 2024-02-02 20:43 ` pr-tracker-bot 2024-02-02 20:43 ` pr-tracker-bot 2023-09-22 16:19 Will Deacon 2023-09-22 16:19 ` Will Deacon 2023-09-22 20:19 ` pr-tracker-bot 2023-09-22 20:19 ` pr-tracker-bot 2023-05-19 11:46 Will Deacon 2023-05-19 11:46 ` Will Deacon 2023-05-19 18:32 ` pr-tracker-bot 2023-05-19 18:32 ` pr-tracker-bot 2022-08-26 17:58 Will Deacon 2022-08-26 17:58 ` Will Deacon 2022-08-26 19:09 ` pr-tracker-bot 2022-08-26 19:09 ` pr-tracker-bot 2021-11-26 13:22 Will Deacon 2021-11-26 13:22 ` Will Deacon 2021-11-26 18:35 ` pr-tracker-bot 2021-11-26 18:35 ` pr-tracker-bot 2021-07-22 15:55 Will Deacon 2021-07-22 15:55 ` Will Deacon 2021-07-22 18:00 ` pr-tracker-bot 2021-07-22 18:00 ` pr-tracker-bot 2021-03-12 13:34 [GIT PULL] arm64: Fixes " Will Deacon 2021-03-12 13:34 ` Will Deacon 2021-03-12 20:03 ` pr-tracker-bot 2021-03-12 20:03 ` pr-tracker-bot 2020-11-06 13:20 [GIT PULL] arm64 fixes " Will Deacon 2020-11-06 13:20 ` Will Deacon 2020-11-06 21:13 ` pr-tracker-bot 2020-11-06 21:13 ` pr-tracker-bot 2020-02-21 16:01 Will Deacon 2020-02-21 16:01 ` Will Deacon 2020-02-22 0:07 ` Linus Torvalds 2020-02-22 0:07 ` Linus Torvalds 2020-02-22 0:15 ` pr-tracker-bot 2020-02-22 0:15 ` pr-tracker-bot 2019-10-09 13:30 [GIT PULL] arm64: Fixes " Will Deacon 2019-10-09 13:30 ` Will Deacon 2019-10-09 19:30 ` pr-tracker-bot 2019-10-09 19:30 ` pr-tracker-bot 2019-05-30 16:11 [GIT PULL] arm64: fixes " Will Deacon 2019-05-30 16:11 ` Will Deacon 2019-05-31 4:25 ` pr-tracker-bot 2019-05-31 4:25 ` pr-tracker-bot 2019-01-20 0:04 Will Deacon 2019-01-20 0:04 ` Will Deacon 2019-01-20 3:29 ` Linus Torvalds 2019-01-20 3:29 ` Linus Torvalds 2019-01-20 4:00 ` pr-tracker-bot 2019-01-20 4:00 ` pr-tracker-bot 2018-04-27 16:23 Will Deacon 2018-04-27 16:23 ` Will Deacon 2017-12-07 17:58 Will Deacon 2017-12-07 17:58 ` Will Deacon 2016-10-28 16:01 Will Deacon 2016-10-28 16:01 ` Will Deacon 2016-02-04 18:49 Will Deacon 2016-02-04 18:49 ` Will Deacon
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