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linux/arch/x86/kernel
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Linus Torvalds 52f657e34d x86: shadow stacks: proper error handling for mmap lock 
김영민 reports that shstk_pop_sigframe() doesn't check for errors from
mmap_read_lock_killable(), which is a silly oversight, and also shows
that we haven't marked those functions with "__must_check", which would
have immediately caught it.

So let's fix both issues.

Reported-by: 김영민 <osori@hspace.io>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Dave Hansen <dave.hansen@intel.com>
Acked-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-04-08 13:18:57 -07:00
..
acpi
x86/acpi: Add acpi=spcr to use SPCR-provided default console
2026-01-17 17:43:21 +01:00
apic
x86/platform/uv: Handle deconfigured sockets
2026-03-20 19:01:03 +01:00
cpu
x86/cpu: Add comment clarifying CRn pinning
2026-03-23 14:25:53 +01:00
fpu
x86/fpu: Clear XSTATE_BV[i] in guest XSAVE state whenever XFD[i]=1
2026-01-10 07:17:16 +01:00
kprobes
Merge tag 'perf-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2025-12-01 20:42:01 -08:00
.gitignore
…
alternative.c
x86/cfi: Fix CFI rewrite for odd alignments
2026-02-23 11:19:11 +01:00
amd_gart_64.c
Merge tag 'dma-mapping-6.19-2025-12-05' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux
2025-12-06 09:25:05 -08:00
amd_nb.c
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
amd_node.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
aperture_64.c
x86/platform/amd: Move the <asm/amd_nb.h> header to <asm/amd/nb.h>
2025-04-14 09:34:14 +02:00
apm_32.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
asm-offsets_32.c
x86/asm-offsets: Export certain 'struct cpuinfo_x86' fields for 64-bit asm use too
2025-05-15 09:12:07 +02:00
asm-offsets_64.c
x86/stackprotector/64: Convert to normal per-CPU variable
2025-02-18 10:15:09 +01:00
asm-offsets.c
x86/entry/vdso32: Remove open-coded DWARF in sigreturn.S
2026-01-13 16:37:58 -08:00
audit_64.c
…
bootflag.c
x86/bootflag: Replace open-coded parity calculation with parity8()
2025-02-27 14:00:30 +01:00
callthunks.c
x86/paravirt: Remove not needed includes of paravirt.h
2026-01-12 11:26:52 +01:00
cet.c
x86/msr: Add explicit includes of <asm/msr.h>
2025-05-02 10:23:47 +02:00
cfi.c
x86/traps: Clarify KCFI instruction layout
2025-09-04 21:59:07 +02:00
check.c
…
cpuid.c
…
crash_dump_32.c
…
crash_dump_64.c
…
crash.c
x86/kexec: fix potential cmem->ranges out of memory
2025-09-13 17:32:54 -07:00
devicetree.c
x86/of: Don't use DTB for SMP setup if ACPI is enabled
2025-02-25 22:13:02 +01:00
doublefault_32.c
…
dumpstack_32.c
x86/irq: Move irq stacks to percpu hot section
2025-03-04 20:30:33 +01:00
dumpstack_64.c
x86/irq: Move irq stacks to percpu hot section
2025-03-04 20:30:33 +01:00
dumpstack.c
x86/dumpstack: Prevent KASAN false positive warnings in __show_regs()
2025-10-29 13:07:21 +01:00
e820.c
Merge tag 'cxl-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
2026-02-12 16:33:05 -08:00
early_printk.c
Merge tag 'v6.15-rc4' into x86/asm, to pick up fixes
2025-05-06 12:03:03 +02:00
early-quirks.c
drm/intel/pciids: rename i915_pciids.h to just pciids.h
2024-10-29 16:14:04 +02:00
ebda.c
…
eisa.c
x86/EISA: Dereference memory directly instead of using readl()
2024-08-29 15:57:09 +02:00
espfix_64.c
x86/fred: No ESPFIX needed when FRED is enabled
2024-01-31 22:01:51 +01:00
fred.c
x86/cpufeature: Replace X86_FEATURE_SYSENTER32 with X86_FEATURE_SYSFAST32
2026-01-13 16:37:58 -08:00
ftrace_32.S
fgraph: Replace fgraph_ret_regs with ftrace_regs
2024-12-26 10:50:02 -05:00
ftrace_64.S
x86/fgraph: Fix return_to_handler regs.rsp value
2026-01-30 13:40:08 -08:00
ftrace.c
x86/ftrace: Implement DYNAMIC_FTRACE_WITH_JMP
2025-11-24 09:46:37 -08:00
head32.c
x86/microcode: Consolidate the loader enablement checking
2025-05-05 10:51:00 +02:00
head64.c
x86/boot: Create a confined code area for startup code
2025-09-03 18:00:01 +02:00
head_32.S
x86/boot: Move startup code out of __head section
2025-09-03 18:06:04 +02:00
head_64.S
x86/xen: Build identity mapping page tables dynamically for XENPV
2026-03-03 14:21:44 +01:00
hpet.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
hw_breakpoint.c
x86: Restrict KVM-induced symbol exports to KVM modules where obvious/possible
2025-11-12 15:29:38 -08:00
i8237.c
syscore: Pass context data to callbacks
2025-11-14 10:01:52 +01:00
i8253.c
x86/i8253: Call clockevent_i8253_disable() with interrupts disabled
2025-04-11 07:28:20 +02:00
i8259.c
syscore: Pass context data to callbacks
2025-11-14 10:01:52 +01:00
ibt_selftest.S
…
idt.c
perf/x86/core: Register a new vector for handling mediated guest PMIs
2025-12-17 13:31:05 +01:00
io_delay.c
…
ioport.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
irq_32.c
x86/irq: Move irq stacks to percpu hot section
2025-03-04 20:30:33 +01:00
irq_64.c
x86/irq: Move irq stacks to percpu hot section
2025-03-04 20:30:33 +01:00
irq_work.c
…
irq.c
Merge tag 'x86-irq-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2026-02-10 17:39:08 -08:00
irqflags.S
x86/cfi: Clean up linkage
2025-02-14 10:32:05 +01:00
irqinit.c
x86/fred: Install system vector handlers even if FRED isn't fully enabled
2025-08-18 14:23:08 +02:00
itmt.c
x86/itmt: Add debugfs file to show core priorities
2025-07-07 22:35:51 +02:00
jailhouse.c
x86/cpuid: Rename hypervisor_cpuid_base()/for_each_possible_hypervisor_cpuid_base() to cpuid_base_hypervisor()/for_each_possible_cpuid_base_hypervisor()
2025-05-16 10:54:47 +02:00
jump_label.c
x86/alternatives: Rename 'text_poke_queue()' to 'smp_text_poke_batch_add()'
2025-04-11 11:01:33 +02:00
kdebugfs.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
kexec-bzimage64.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
kgdb.c
x86/traps: Initialize DR7 by writing its architectural reset value
2025-06-24 13:15:52 -07:00
ksysfs.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
kvm.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
kvmclock.c
x86/paravirt: Move paravirt_sched_clock() related code into tsc.c
2026-01-12 18:47:39 +01:00
ldt.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
machine_kexec_32.c
x86/mm: Fix _pgd_alloc() for Xen PV mode
2025-04-23 07:49:14 -07:00
machine_kexec_64.c
x86/crash: Use set_memory_p() instead of __set_memory_prot()
2026-01-13 15:28:59 +01:00
Makefile
x86/kexec: Disable KCOV instrumentation after load_segments()
2026-03-30 14:15:25 +02:00
mmconf-fam10h_64.c
x86/msr: Rename 'wrmsrl()' to 'wrmsrq()'
2025-04-10 11:58:33 +02:00
module.c
x86/module: Improve relocation error messages
2025-10-14 14:45:21 -07:00
mpparse.c
x86/mpparse: Cleanup apic_printk()s
2024-08-07 18:13:28 +02:00
msr.c
x86/msr: Add CPU_OUT_OF_SPEC taint name to "unrecognized" pr_warn(msg)
2025-11-05 13:14:42 +01:00
nmi_selftest.c
x86/nmi: Clean up NMI selftest
2025-04-01 22:26:32 +02:00
nmi.c
x86: Restrict KVM-induced symbol exports to KVM modules where obvious/possible
2025-11-12 15:29:38 -08:00
paravirt-spinlocks.c
x86/pvlocks: Move paravirt spinlock functions into own header
2026-01-13 14:57:45 +01:00
paravirt.c
x86/pvlocks: Move paravirt spinlock functions into own header
2026-01-13 14:57:45 +01:00
pci-dma.c
Documentation: Merge x86-specific boot options doc into kernel-parameters.txt
2024-12-10 18:25:40 +01:00
pcspeaker.c
…
perf_regs.c
…
platform-quirks.c
…
pmem.c
…
probe_roms.c
x86/sev: Skip ROM range scans and validation for SEV-SNP guests
2024-03-26 15:22:35 +01:00
process_32.c
x86/traps: Initialize DR7 by writing its architectural reset value
2025-06-24 13:15:52 -07:00
process_64.c
x86/entry/vdso: Rename vdso_image_* to vdso*_image
2026-01-13 15:33:20 -08:00
process.c
Merge tag 'x86_tdx_for_6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2025-10-04 10:01:30 -07:00
process.h
…
ptrace.c
x86/ptrace: Use USER_REGSET_NOTE_TYPE() to specify regset note names
2025-07-14 22:27:48 -07:00
pvclock.c
…
quirks.c
x86/platform: Fix missing declaration of 'x86_apple_machine'
2025-02-27 22:52:37 +01:00
reboot_fixups_32.c
x86/msr: Rename 'wrmsrl()' to 'wrmsrq()'
2025-04-10 11:58:33 +02:00
reboot.c
x86: Restrict KVM-induced symbol exports to KVM modules where obvious/possible
2025-11-12 15:29:38 -08:00
relocate_kernel_32.S
x86/asm: Remove semicolon from "rep" prefixes
2025-04-18 09:33:33 +02:00
relocate_kernel_64.S
x86/kexec: Disable LASS during relocate kernel
2025-11-18 10:38:26 -08:00
resource.c
…
rethook.c
objtool: Remove newlines and tabs from annotation macros
2025-12-03 19:42:37 +01:00
rtc.c
x86/rtc: Remove unused intel-mid.h
2024-04-03 08:24:48 -07:00
setup_percpu.c
x86/smp: Move this_cpu_off to percpu hot section
2025-03-04 20:30:33 +01:00
setup.c
Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 12:13:01 -08:00
sev_verify_cbit.S
x86/boot: Use 32-bit XOR to clear registers
2024-03-01 12:47:37 +01:00
shstk.c
x86: shadow stacks: proper error handling for mmap lock
2026-04-08 13:18:57 -07:00
signal_32.c
x86/entry/vdso: Rename vdso_image_* to vdso*_image
2026-01-13 15:33:20 -08:00
signal_64.c
x86/fred/signal: Prevent immediate repeat of single step trap on return from SIGTRAP handler
2025-06-09 08:50:58 -07:00
signal.c
x86/fpu: Convert task_struct::thread.fpu accesses to use x86_task_fpu()
2025-04-14 08:18:29 +02:00
smp.c
x86/smp: PM/hibernate: Split arch_resume_nosmt()
2025-06-07 14:22:56 +02:00
smpboot.c
x86/topo: Fix SNC topology mess
2026-03-04 16:35:09 +01:00
stacktrace.c
…
static_call.c
objtool: Remove newlines and tabs from annotation macros
2025-12-03 19:42:37 +01:00
step.c
x86/msr: Prepare for including <linux/percpu.h> into <asm/msr.h>
2024-03-04 12:01:39 +01:00
sys_ia32.c
…
sys_x86_64.c
arch/x86: teach arch_get_unmapped_area_vmflags to handle hugetlb mappings
2024-11-06 20:11:10 -08:00
tboot.c
x86/e820: Drop obsolete E820_TYPE_RESERVED_KERN and related code
2025-02-21 16:05:00 +01:00
time.c
x86: stop playing stack games in profile_pc()
2024-06-28 14:27:22 -07:00
tls.c
…
tls.h
…
trace_clock.c
x86/msr: Add explicit includes of <asm/msr.h>
2025-05-02 10:23:47 +02:00
trace.c
…
traps.c
x86/bug: Handle __WARN_printf() trap in early_fixup_exception()
2026-02-23 11:19:11 +01:00
tsc_msr.c
x86/cpu: Fix #define name for Intel CPU model 0x5A
2025-02-04 10:05:53 -08:00
tsc_sync.c
x86/msr: Add explicit includes of <asm/msr.h>
2025-05-02 10:23:47 +02:00
tsc.c
Merge tag 'x86_paravirt_for_v7.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2026-02-10 19:01:45 -08:00
umip.c
x86/umip: Fix decoding of register forms of 0F 01 (SGDT and SIDT aliases)
2025-09-19 21:34:48 +02:00
unwind_frame.c
…
unwind_guess.c
…
unwind_orc.c
x86/unwind/orc: Support reliable unwinding through BPF stack frames
2025-12-09 23:30:04 -08:00
uprobes.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
verify_cpu.S
x86/cpufeatures: Generate the <asm/cpufeaturemasks.h> header based on build config
2025-03-19 11:15:11 +01:00
vm86_32.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
vmcore_info_32.c
crash: split vmcoreinfo exporting code out from crash_core.c
2024-02-23 17:48:22 -08:00
vmcore_info_64.c
crash: split vmcoreinfo exporting code out from crash_core.c
2024-02-23 17:48:22 -08:00
vmlinux.lds.S
kbuild: Split .modinfo out from ELF_DETAILS
2026-02-26 11:50:19 -07:00
vsmp_64.c
x86/paravirt: Remove not needed includes of paravirt.h
2026-01-12 11:26:52 +01:00
x86_init.c
treewide: Update email address
2026-01-11 06:09:11 -10:00