AuxXxilium/linux_dsm_epyc7002
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f9409d58e9
linux_dsm_epyc7002/arch/arm64/kernel
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Andrey Konovalov f9409d58e9 kasan, arm64: don't instrument functions that enable kasan 
This patch prepares Software Tag-Based KASAN for stack tagging support.

With stack tagging enabled, KASAN tags stack variable in each function in
its prologue.  In start_kernel() stack variables get tagged before KASAN
is enabled via setup_arch()->kasan_init().  As the result the tags for
start_kernel()'s stack variables end up in the temporary shadow memory.
Later when KASAN gets enabled, switched to normal shadow, and starts
checking tags, this leads to false-positive reports, as proper tags are
missing in normal shadow.

Disable KASAN instrumentation for start_kernel().  Also disable it for
arm64's setup_arch() as a precaution (it doesn't have any stack variables
right now).

[andreyknvl@google.com: reorder attributes for start_kernel()]
  Link: http://lkml.kernel.org/r/26fb6165a17abcf61222eda5184c030fb6b133d1.1596544734.git.andreyknvl@google.com

Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>	[arm64]
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Elena Petrova <lenaptr@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Walter Wu <walter-zh.wu@mediatek.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Link: http://lkml.kernel.org/r/55d432671a92e931ab8234b03dc36b14d4c21bfb.1596199677.git.andreyknvl@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-07 11:33:28 -07:00
..
probes vmalloc: fix the owner argument for the new __vmalloc_node_range callers 2020-07-03 16:15:25 -07:00
vdso arm64/vdso: Add time namespace page 2020-07-24 13:15:20 +01:00
vdso32 arm64 and cross-arch updates for 5.9: 2020-08-03 14:11:08 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
acpi_numa.c
acpi_parking_protocol.c
acpi.c arm64/acpi: disallow writeable AML opregion mapping for EFI code regions 2020-07-14 18:02:04 +01:00
alternative.c arm64/alternatives: don't patch up internal branches 2020-07-09 14:57:59 +01:00
armv8_deprecated.c sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
asm-offsets.c ARM: 2020-06-03 15:13:47 -07:00
cacheinfo.c
cpu_errata.c arm64: Add missing sentinel to erratum_1463225 2020-07-09 09:42:24 +01:00
cpu_ops.c arm64: Introduce get_cpu_ops() helper function 2020-03-24 17:24:19 +00:00
cpu-reset.h
cpu-reset.S arm64: kernel: Convert to modern annotations for assembly functions 2020-05-04 12:46:03 +01:00
cpufeature.c arm64 and cross-arch updates for 5.9: 2020-08-03 14:11:08 -07:00
cpuidle.c arm64: Introduce get_cpu_ops() helper function 2020-03-24 17:24:19 +00:00
cpuinfo.c arm64: Reserve HWCAP2_MTE as (1 << 18) 2020-07-24 11:55:29 +01:00
crash_core.c arm64/crash_core: Export TCR_EL1.T1SZ in vmcoreinfo 2020-07-02 17:56:49 +01:00
crash_dump.c
debug-monitors.c arm64: Use test_tsk_thread_flag() for checking TIF_SINGLESTEP 2020-07-16 11:42:12 +01:00
efi-entry.S arm64 updates for 5.8 2020-06-01 15:18:27 -07:00
efi-header.S arm64 updates for 5.8 2020-06-01 15:18:27 -07:00
efi-rt-wrapper.S Merge branch 'for-next/scs' into for-next/core 2020-05-28 18:03:40 +01:00
efi.c
entry-common.c arm64: entry: Fix the typo in the comment of el1_dbg() 2020-07-08 21:44:40 +01:00
entry-fpsimd.S arm64: kernel: Convert to modern annotations for assembly functions 2020-05-04 12:46:03 +01:00
entry-ftrace.S arm64: entry-ftrace.S: Update comment to indicate that x18 is live 2020-05-18 17:47:50 +01:00
entry.S arm64 and cross-arch updates for 5.9: 2020-08-03 14:11:08 -07:00
fpsimd.c arm64: sve: Fix build failure when ARM64_SVE=y and SYSCTL=n 2020-06-16 18:29:11 +01:00
ftrace.c arm64: ftrace: Change CONFIG_FTRACE_WITH_REGS to CONFIG_DYNAMIC_FTRACE_WITH_REGS 2020-06-08 15:44:59 +01:00
head.S mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
hibernate-asm.S arm64: kernel: Convert to modern annotations for assembly functions 2020-05-04 12:46:03 +01:00
hibernate.c mm: consolidate pte_index() and pte_offset_*() definitions 2020-06-09 09:39:14 -07:00
hw_breakpoint.c arm64: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints 2020-06-18 11:10:00 +01:00
hyp-stub.S arm64: kernel: Convert to modern annotations for assembly functions 2020-05-04 12:46:03 +01:00
image-vars.h arm64: rename stext to primary_entry 2020-04-28 13:55:16 +01:00
image.h arm64/efi: Move variable assignments after SECTIONS 2019-08-14 17:18:15 +01:00
insn.c maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault 2020-06-17 10:57:41 -07:00
io.c
irq.c
jump_label.c
kaslr.c random: random.h should include archrandom.h, not the other way around 2020-08-05 12:39:48 -07:00
kexec_image.c arm64: kexec_file: add crash dump support 2020-01-08 17:05:23 +00:00
kgdb.c arm64: kgdb: Fix single-step exception handling oops 2020-07-08 22:18:54 +01:00
kuser32.S
machine_kexec_file.c arm64: kexec_file: Use struct_size() in kmalloc() 2020-06-18 10:45:20 +01:00
machine_kexec.c arm64: fix the flush_icache_range arguments in machine_kexec 2020-05-11 12:02:14 +01:00
Makefile arm64: compat: Allow 32-bit vdso and sigpage to co-exist 2020-06-23 14:47:03 +01:00
module-plts.c arm64/module: Optimize module load time by optimizing PLT counting 2020-07-02 12:17:13 +01:00
module.c arm64: implement ftrace with regs 2019-11-06 14:17:35 +00:00
module.lds
paravirt.c firmware: smccc: Drop smccc_version enum and use ARM_SMCCC_VERSION_1_x instead 2020-05-20 19:10:37 +01:00
pci.c PCI: Constify struct pci_ecam_ops 2020-05-01 16:28:59 +01:00
perf_callchain.c
perf_event.c arm64: perf: Expose some new events via sysfs 2020-07-21 12:59:42 +01:00
perf_regs.c arm64: perf: Report the PC value in REGS_ABI_32 mode 2020-06-25 14:47:04 +01:00
pointer_auth.c arm64: install user ptrauth keys at kernel exit time 2020-03-18 09:50:19 +00:00
process.c arch: rename copy_thread_tls() back to copy_thread() 2020-07-04 23:41:37 +02:00
psci.c arm64: psci: Reduce the waiting time for cpu_psci_cpu_kill() 2019-10-25 16:29:11 +01:00
ptrace.c arm64: ptrace: Use NO_SYSCALL instead of -1 in syscall_trace_enter() 2020-07-16 11:42:08 +01:00
reloc_test_core.c
reloc_test_syms.S arm64: kernel: Convert to modern annotations for assembly functions 2020-05-04 12:46:03 +01:00
relocate_kernel.S arm64: kernel: Convert to modern annotations for assembly functions 2020-05-04 12:46:03 +01:00
return_address.c
scs.c scs: Move DEFINE_SCS macro into core code 2020-05-18 17:47:48 +01:00
sdei.c arm64 updates for 5.8 2020-06-01 15:18:27 -07:00
setup.c kasan, arm64: don't instrument functions that enable kasan 2020-08-07 11:33:28 -07:00
signal32.c arm64: compat: Always use sigpage for sigreturn trampoline 2020-06-23 14:56:24 +01:00
signal.c arm64: ptrace: Consistently use pseudo-singlestep exceptions 2020-07-16 11:41:07 +01:00
sigreturn32.S
sleep.S Merge branch 'for-next/bti' into for-next/core 2020-05-28 18:00:51 +01:00
smccc-call.S arm64: kernel: Convert to modern annotations for assembly functions 2020-05-04 12:46:03 +01:00
smp_spin_table.c arm64: prefer __section from compiler_attributes.h 2019-08-13 18:32:15 +01:00
smp.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
ssbd.c Return ENODEV when the selected speculation misfeature is unsupported 2020-01-08 17:27:41 +00:00
stacktrace.c arm64: stacktrace: Move export for save_stack_trace_tsk() 2020-07-14 19:16:25 +01:00
suspend.c mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
sys32.c
sys_compat.c arm64: Silence clang warning on mismatched value/register sizes 2019-10-28 09:13:21 +00:00
sys.c
syscall.c arm64: syscall: Expand the comment about ptrace and syscall(-1) 2020-07-16 11:41:58 +01:00
time.c arm64: time: Replace <linux/clk-provider.h> by <linux/of_clk.h> 2020-02-12 17:26:38 +00:00
topology.c arm64: use activity monitors for frequency invariance 2020-03-06 16:02:50 +00:00
trace-events-emulation.h
traps.c arm64: use IRQ_STACK_SIZE instead of THREAD_SIZE for irq stack 2020-07-31 18:05:36 +01:00
vdso.c arm64/vdso: Restrict splitting VVAR VMA 2020-07-24 18:06:52 +01:00
vmlinux.lds.S arm64 and cross-arch updates for 5.9: 2020-08-03 14:11:08 -07:00