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9b6b7c680c
linux/arch/powerpc
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Ravi Bangoria 9b6b7c680c powerpc/watchpoint/ptrace: Fix SETHWDEBUG when CONFIG_HAVE_HW_BREAKPOINT=N 
When kernel is compiled with CONFIG_HAVE_HW_BREAKPOINT=N, user can
still create watchpoint using PPC_PTRACE_SETHWDEBUG, with limited
functionalities. But, such watchpoints are never firing because of
the missing privilege settings. Fix that.

It's safe to set HW_BRK_TYPE_PRIV_ALL because we don't really leak
any kernel address in signal info. Setting HW_BRK_TYPE_PRIV_ALL will
also help to find scenarios when kernel accesses user memory.

Reported-by: Pedro Miraglia Franco de Carvalho <pedromfc@linux.ibm.com>
Suggested-by: Pedro Miraglia Franco de Carvalho <pedromfc@linux.ibm.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200902042945.129369-4-ravi.bangoria@linux.ibm.com
2020-09-15 22:13:18 +10:00
..
boot powerpc/boot: Update Makefile comment for 64bit wrapper 2020-09-08 22:24:19 +10:00
configs powerpc/configs: Add BLK_DEV_NVME to pseries_defconfig 2020-07-29 23:47:53 +10:00
crypto powerpc: Replace HTTP links with HTTPS ones 2020-07-22 00:01:23 +10:00
include powerpc/watchpoint: Fix quadword instruction handling on p10 predecessors 2020-09-15 22:12:25 +10:00
kernel powerpc/watchpoint/ptrace: Fix SETHWDEBUG when CONFIG_HAVE_HW_BREAKPOINT=N 2020-09-15 22:13:18 +10:00
kexec powerpc/kexec_file: Enable early kernel OPAL calls 2020-07-29 23:47:55 +10:00
kvm powerpc/64s: handle ISA v3.1 local copy-paste context switches 2020-09-08 22:57:12 +10:00
lib powerpc/test_emulate_step: Add testcases for divde[.] and divdeu[.] instructions 2020-07-29 23:47:52 +10:00
math-emu
mm powerpc/pseries/svm: Allocate SWIOTLB buffer anywhere in memory 2020-09-14 23:07:14 +10:00
net powerpc/ppc-opcode: Consolidate powerpc instructions from bpf_jit.h 2020-07-16 13:12:42 +10:00
oprofile powerpc/oprofile: fix spelling mistake "contex" -> "context" 2020-08-25 01:31:33 +10:00
perf Merge branch 'fixes' into next 2020-09-14 22:57:18 +10:00
platforms powerpc/pseries/svm: Allocate SWIOTLB buffer anywhere in memory 2020-09-14 23:07:14 +10:00
purgatory powerpc/kexec_file: Enable early kernel OPAL calls 2020-07-29 23:47:55 +10:00
sysdev powerpc/icp-hv: Fix missing of_node_put() in success path 2020-08-25 01:31:31 +10:00
tools powerpc/tools: Remove 90 line limit in checkpatch script 2020-09-08 22:57:11 +10:00
xmon Kbuild updates for v5.9 2020-08-09 14:10:26 -07:00
Kbuild
Kconfig powerpc/mm: Remove DEBUG_VM_PGTABLE support on powerpc 2020-09-02 22:14:26 +10:00
Kconfig.debug powerpc: Remove Xilinx PPC405/PPC440 support 2020-05-28 23:24:34 +10:00
Makefile powerpc/4xx: ppc4xx compile flag optimizations 2020-06-22 14:19:12 +10:00
Makefile.postlink powerpc: unrel_branch_check.sh: use nm to find symbol value 2020-09-02 11:00:22 +10:00