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linux-stable/arch/powerpc
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Christophe Leroy 5256426247 powerpc/signal32: Fix erroneous SIGSEGV on RT signal return 
Return of user_read_access_begin() is tested the wrong way,
leading to a SIGSEGV when the user address is valid and likely
an Oops when the user address is bad.

Fix the test.

Fixes: 887f3ceb51 ("powerpc/signal32: Convert do_setcontext[_tm]() to user access block")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/a29aadc54c93bcbf069a83615fa102ca0f59c3ae.1619185912.git.christophe.leroy@csgroup.eu
2021-04-28 23:35:11 +10:00
..
boot powerpc/boot: Fix build of dts/fsl 2020-12-21 22:06:09 +11:00
configs powerpc/configs: Add IBMVNIC to some 64-bit configs 2021-04-23 01:38:03 +10:00
crypto crypto: powerpc/sha256 - remove unneeded semicolon 2021-02-10 17:55:57 +11:00
include powerpc: Avoid clang uninitialized warning in __get_user_size_allowed 2021-04-28 23:34:50 +10:00
kernel powerpc/signal32: Fix erroneous SIGSEGV on RT signal return 2021-04-28 23:35:11 +10:00
kexec powerpc/traps: Enhance readability for trap types 2021-04-17 22:20:19 +10:00
kvm powerpc/kvm: Fix build error when PPC_MEM_KEYS/PPC_PSERIES=n 2021-04-27 10:48:37 +10:00
lib powerpc: Move copy_inst_from_kernel_nofault() 2021-04-21 22:52:34 +10:00
math-emu powerpc/math: Fix missing __user qualifier for get_user() and other sparse warnings 2021-03-29 13:22:12 +11:00
mm powerpc/64s: Fix mm_cpumask memory ordering comment 2021-04-23 01:38:03 +10:00
net powerpc/ebpf32: Use standard function call for functions within 32M distance 2021-04-21 22:52:33 +10:00
perf powerpc/perf: Fix the threshold event selection for memory events in power10 2021-04-23 01:38:02 +10:00
platforms powerpc/papr_scm: Mark nvdimm as unarmed if needed during probe 2021-04-27 23:47:02 +10:00
purgatory powerpc/kexec: Don't use .machine ppc64 in trampoline_64.S 2021-04-08 21:17:43 +10:00
sysdev powerpc/iommu: Do not immediately panic when failed IOMMU table allocation 2021-04-23 01:38:04 +10:00
tools powerpc/tools: Remove 90 line limit in checkpatch script 2020-09-08 22:57:11 +10:00
xmon powerpc/inst: ppc_inst_as_u64() becomes ppc_inst_as_ulong() 2021-04-21 22:52:32 +10:00
Kbuild
Kconfig powerpc: Enable OPTPROBES on PPC32 2021-04-21 22:52:32 +10:00
Kconfig.debug powerpc: iommu: fix build when neither PCI or IBMVIO is set 2021-04-08 21:17:46 +10:00
Makefile powerpc: Only define _TASK_CPU for 32-bit 2021-04-20 14:22:24 +10:00
Makefile.postlink powerpc: unrel_branch_check.sh: use nm to find symbol value 2020-09-02 11:00:22 +10:00