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torvalds-linux/arch/s390/include/asm
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Heiko Carstens 7f8073cfb0 s390/ptrace: Fix pointer dereferencing in regs_get_kernel_stack_nth() 
The recent change which added READ_ONCE_NOCHECK() to read the nth entry
from the kernel stack incorrectly dropped dereferencing of the stack
pointer in order to read the requested entry.

In result the address of the entry is returned instead of its content.

Dereference the pointer again to fix this.

Reported-by: Will Deacon <will@kernel.org>
Closes: https://lore.kernel.org/r/20250612163331.GA13384@willie-the-truck
Fixes: d93a855c31b7 ("s390/ptrace: Avoid KASAN false positives in regs_get_kernel_stack_nth()")
Cc: stable@vger.kernel.org
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
2025-06-17 18:15:25 +02:00
..
trace
s390/hiperdispatch: Add trace events
2024-08-29 22:56:35 +02:00
vdso
s390/vdso: Switch to generic storage implementation
2025-02-21 09:54:02 +01:00
abs_lowcore.h
s390/lowcore: Convert relocated lowcore alternative to machine feature
2025-03-04 17:18:05 +01:00
access-regs.h
…
airq.h
…
alternative.h
s390/lowcore: Convert relocated lowcore alternative to machine feature
2025-03-04 17:18:05 +01:00
ap.h
s390/chsc: use notifier for AP configuration changes
2024-04-09 17:29:55 +02:00
appldata.h
s390: Convert MACHINE_IS_[LPAR|VM|KVM], etc, machine_is_[lpar|vm|kvm]()
2025-03-04 17:18:07 +01:00
arch_hweight.h
s390: Use MARCH_HAS_*_FEATURES defines
2024-09-07 17:12:42 +02:00
archrandom.h
…
asce.h
s390/mm: Reimplement lazy ASCE handling
2025-04-14 11:23:21 +02:00
asm-const.h
…
asm-extable.h
s390/uaccess: Shorten raw_copy_from_user() / raw_copy_to_user() inline assemblies
2025-03-04 17:18:03 +01:00
asm-prototypes.h
s390/expoline: Make modules use kernel expolines
2024-04-17 13:38:03 +02:00
asm.h
s390: Rename GCC_ASM_FLAG_OUTPUT_BROKEN to CC_ASM_FLAG_OUTPUT_BROKEN
2025-01-26 17:24:04 +01:00
atomic_ops.h
s390/atomic_ops: Let __atomic_add_const() variants always return void
2025-03-04 17:34:04 +01:00
atomic.h
s390/atomic: Provide arch_atomic_*_and_test() implementations
2024-12-15 16:19:03 +01:00
barrier.h
s390: Use MARCH_HAS_*_FEATURES defines
2024-09-07 17:12:42 +02:00
bitops.h
s390/bitops: Disable arch_test_bit() optimization for PROFILE_ALL_BRANCHES
2025-02-11 19:35:08 +01:00
boot_data.h
s390/boot: Add timestamps to early boot messages
2025-01-26 17:24:02 +01:00
bug.h
…
cache.h
…
ccwdev.h
driver core: have match() callback in struct bus_type take a const *
2024-07-03 15:16:54 +02:00
ccwgroup.h
…
checksum.h
s390: Remove superfluous new lines from inline assemblies
2024-12-15 16:19:03 +01:00
chpid.h
…
chsc.h
s390/chsc: use notifier for AP configuration changes
2024-04-09 17:29:55 +02:00
cio.h
…
clocksource.h
…
clp.h
…
cmb.h
…
cmpxchg.h
s390/cmpxchg: Provide arch_try_cmpxchg128()
2024-11-12 14:01:28 +01:00
compat.h
…
cpacf.h
s390/cpacf: Rework cpacf_pcc() to return condition code
2025-05-17 10:49:21 +02:00
cpcmd.h
…
cpu_mf-insn.h
…
cpu_mf.h
s390: Use inline qualifier for all EX_TABLE and ALTERNATIVE inline assemblies
2025-03-18 17:13:51 +01:00
cpu.h
…
cpufeature.h
watchdog: diag288_wdt: Implement module autoload
2025-04-16 09:26:49 +02:00
cputime.h
…
crw.h
…
css_chars.h
s390/qdio: Rename feature flag aif_osa to aif_qdio
2025-01-03 11:00:53 +01:00
ctlreg.h
s390/wti: Introduce infrastructure for warning track interrupt
2024-08-29 22:56:34 +02:00
current.h
s390/current: Implement current with inline assembly
2025-03-18 17:13:04 +01:00
dat-bits.h
s390/kvm: Move bitfields for dat tables
2024-07-10 19:50:45 +02:00
debug.h
s390/pci: Add pci_msg debug view to PCI report
2024-12-16 16:14:27 +01:00
delay.h
…
diag288.h
watchdog: diag288_wdt: Implement module autoload
2025-04-16 09:26:49 +02:00
diag.h
s390: Use inline qualifier for all EX_TABLE and ALTERNATIVE inline assemblies
2025-03-18 17:13:51 +01:00
dis.h
…
dma-types.h
…
dma.h
…
dwarf.h
s390/vdso: Add CFI for RA register to asm macro vdso_func
2024-04-26 16:22:38 +02:00
eadm.h
…
ebcdic.h
s390/ebcdic: Fix length decrement in codepage_convert()
2025-01-13 09:50:18 +01:00
elf.h
s390: Remove 2k vs 4k page table leftovers
2025-03-18 17:13:05 +01:00
entry-common.h
randomize_kstack: Remove non-functional per-arch entropy filtering
2024-06-28 08:54:56 -07:00
exec.h
…
extable.h
…
extmem.h
s390/boot: Consider DCSS segments on memory layout setup
2024-04-17 13:37:59 +02:00
facility.h
s390/facilities: Fix warning about shadow of global variable
2024-10-10 15:32:43 +02:00
fault.h
…
fcx.h
…
fprobe.h
fprobe: Add fprobe_header encoding feature
2024-12-26 10:50:05 -05:00
fpu-insn-asm.h
s390/vdso: Wire up getrandom() vdso implementation
2024-09-13 20:57:31 +02:00
fpu-insn.h
s390/fpu: Use CONFIG_CC_HAS_ASM_AOR_FORMAT_FLAGS instead of CONFIG_CC_IS_CLANG
2025-01-26 17:24:05 +01:00
fpu-types.h
…
fpu.h
s390/vx: Convert cpu_has_vx() to cpu feature function
2025-03-04 17:18:07 +01:00
ftrace.h
s390/tracing: Define ftrace_get_symaddr() for s390
2025-01-29 15:12:40 +01:00
ftrace.lds.h
…
futex.h
s390/mm: Reimplement lazy ASCE handling
2025-04-14 11:23:21 +02:00
gmap_helpers.h
KVM: s390: Refactor and split some gmap helpers
2025-05-28 17:48:04 +02:00
gmap.h
KVM: s390: Refactor and split some gmap helpers
2025-05-28 17:48:04 +02:00
hardirq.h
s390: Replace S390_lowcore by get_lowcore()
2024-06-18 17:01:33 +02:00
hiperdispatch.h
s390/hiperdispatch: Introduce hiperdispatch
2024-08-29 22:56:35 +02:00
hugetlb.h
s390 updates for 6.15 merge window
2025-03-29 11:59:43 -07:00
hw_irq.h
…
idals.h
…
idle.h
…
io.h
- The 6 patch series "Enable strict percpu address space checks" from
2025-04-01 09:29:18 -07:00
ipl.h
…
irq_work.h
…
irq.h
s390/net: Remove LCS driver
2025-02-05 18:19:01 -08:00
irqflags.h
s390/irqflags: do not instrument arch_local_irq_*() with KMSAN
2024-07-03 19:30:25 -07:00
isc.h
…
itcw.h
…
jump_label.h
…
kasan.h
…
Kbuild
arch, mm: move definition of node_data to generic code
2024-09-03 21:15:28 -07:00
kdebug.h
…
kexec.h
s390/kdump: Provide is_kdump_kernel() implementation
2024-10-25 16:03:23 +02:00
kfence.h
s390/kfence: Split kfence pool into 4k mappings in arch_kfence_init_pool()
2025-03-18 17:13:05 +01:00
kmsan.h
s390/kmsan: Fix merge conflict with get_lowcore() introduction
2024-07-23 16:01:51 +02:00
kprobes.h
…
kvm_host_types.h
s390/kvm: Split kvm_host header file
2025-03-31 12:20:39 +02:00
kvm_host.h
s390/kvm: Split kvm_host header file
2025-03-31 12:20:39 +02:00
kvm_para.h
…
linkage.h
…
lowcore.h
s390/lowcore: Remove unused machine_flags
2025-03-31 12:20:39 +02:00
maccess.h
…
machine.h
watchdog: diag288_wdt: Implement module autoload
2025-04-16 09:26:49 +02:00
march.h
s390: Allow to compile with z17 optimizations
2025-04-09 12:12:41 +02:00
mem_encrypt.h
…
mmu_context.h
s390/mm: Select ARCH_WANT_IRQS_OFF_ACTIVATE_MM
2025-04-14 11:23:21 +02:00
mmu.h
s390: Remove 2k vs 4k page table leftovers
2025-03-18 17:13:05 +01:00
module.h
s390/module: Provide find_section() helper
2024-09-13 17:28:36 +02:00
msi.h
…
nmi.h
…
nospec-branch.h
s390: always declare expoline thunks
2025-05-22 08:40:56 -07:00
nospec-insn.h
s390/expoline: Make modules use kernel expolines
2024-04-17 13:38:03 +02:00
numa.h
…
os_info.h
s390/os_info: Fix array size in struct os_info
2024-04-29 17:33:29 +02:00
page-states.h
s390: Remove __bootdata annotations from declarations
2024-12-15 16:19:04 +01:00
page.h
s390/mm: Add configurable STRICT_MM_TYPECHECKS
2025-03-11 15:27:34 +01:00
pai.h
s390/pai: Convert to use flag output macros
2024-11-13 14:31:32 +01:00
pci_clp.h
s390/pci: check for relaxed translation capability
2025-02-21 12:01:57 +01:00
pci_debug.h
…
pci_dma.h
iommu/s390: allow larger region tables
2025-04-17 16:43:12 +02:00
pci_insn.h
…
pci_io.h
s390/pci: Align prototypes of zpci IO memcpy functions
2024-10-16 11:33:06 +02:00
pci.h
pci-v6.15-changes
2025-03-28 19:36:53 -07:00
percpu.h
s390: Use MARCH_HAS_*_FEATURES defines
2024-09-07 17:12:42 +02:00
perf_event.h
Performance events changes for v6.13:
2024-11-19 13:34:06 -08:00
pfault.h
…
pgalloc.h
mm: pass mm down to pagetable_{pte,pmd}_ctor
2025-05-11 17:48:21 -07:00
pgtable.h
mm: pgtable: fix pte_swp_exclusive
2025-06-11 14:52:08 -07:00
physmem_info.h
s390/boot: Add physmem tracking debug support
2025-01-26 17:24:02 +01:00
pkey.h
s390/pkey/crypto: Introduce xflags param for pkey in-kernel API
2025-04-30 11:34:03 +02:00
pnet.h
…
preempt.h
s390/preempt: Optimize __preempt_count_dec_and_test()
2024-12-15 16:19:03 +01:00
processor.h
s390/processor: Use bitop functions for cpu flag helper functions
2025-03-31 12:20:39 +02:00
ptrace.h
s390/ptrace: Fix pointer dereferencing in regs_get_kernel_stack_nth()
2025-06-17 18:15:25 +02:00
purgatory.h
…
qdio.h
…
runtime_instr.h
…
runtime-const.h
s390: Add runtime constant support
2024-07-23 15:54:58 +02:00
rwonce.h
…
schid.h
…
sclp.h
s390/tlb: Convert MACHINE_HAS_TLB_GUEST to machine_has_tlb_guest()
2025-03-04 17:18:06 +01:00
scsw.h
…
seccomp.h
…
sections.h
…
set_memory.h
- The series "zram: optimal post-processing target selection" from
2024-11-23 09:58:07 -08:00
setup.h
s390: Convert MACHINE_IS_[LPAR|VM|KVM], etc, machine_is_[lpar|vm|kvm]()
2025-03-04 17:18:07 +01:00
signal.h
…
sigp.h
s390/smp: Convert to use flag output macros
2024-11-13 14:31:32 +01:00
smp.h
s390/smp: Implement raw_smp_processor_id() with inline assembly
2025-03-18 17:13:04 +01:00
softirq_stack.h
s390: Replace S390_lowcore by get_lowcore()
2024-06-18 17:01:33 +02:00
sparsemem.h
s390/sparsemem: Provide phys_to_target_node() with CONFIG_NUMA
2024-11-07 10:33:44 +01:00
spinlock_types.h
Improve consistency of '#error' directive messages
2024-11-11 17:17:04 -08:00
spinlock.h
s390/spinlock: Implement SPINLOCK_LOCKVAL with inline assembly
2025-03-18 17:13:04 +01:00
stacktrace.h
s390/entry: Pass the asce as parameter to sie64a()
2024-07-10 19:50:45 +02:00
stp.h
s390/time: Add PtP driver
2024-10-30 17:02:39 -07:00
string.h
s390/string: Remove strcpy() implementation
2025-04-30 11:41:28 +02:00
syscall_wrapper.h
…
syscall.h
syscall.h: introduce syscall_set_nr()
2025-05-11 17:48:15 -07:00
sysinfo.h
s390/sysinfo: Move stsi() to header file
2025-03-04 17:18:07 +01:00
text-patching.h
…
thread_info.h
s390/thread_info: Cleanup header includes
2025-05-17 10:55:00 +02:00
timex.h
s390/time: Convert MACHINE_HAS_SCC to machine_has_scc()
2025-03-04 17:18:06 +01:00
tlb.h
Generic:
2025-06-02 12:24:58 -07:00
tlbflush.h
s390/tlb: Convert MACHINE_HAS_TLB_GUEST to machine_has_tlb_guest()
2025-03-04 17:18:06 +01:00
topology.h
s390/smp: Add support for HOTPLUG_SMT
2025-03-31 12:20:39 +02:00
tpi.h
…
types.h
…
uaccess.h
s390/mm: Reimplement lazy ASCE handling
2025-04-14 11:23:21 +02:00
unistd.h
clone3: drop __ARCH_WANT_SYS_CLONE3 macro
2024-07-10 14:23:38 +02:00
unwind.h
…
uprobes.h
…
user.h
…
uv.h
Generic:
2025-06-02 12:24:58 -07:00
vdso-symbols.h
s390/vdso: Move vdso symbol handling to separate header file
2024-09-13 17:28:36 +02:00
vdso.h
s390/vdso: Switch to generic storage implementation
2025-02-21 09:54:02 +01:00
vmalloc.h
…
vmlinux.lds.h
…
vtime.h
s390/vtime: Remove duplicate get_lowcore() calls
2024-06-18 17:01:33 +02:00
vtimer.h
…
word-at-a-time.h
s390: Use inline qualifier for all EX_TABLE and ALTERNATIVE inline assemblies
2025-03-18 17:13:51 +01:00
xor.h
…