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c416b5bac6
linux/arch/x86/kernel
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Xin Li (Intel) c416b5bac6 x86/fred: Fix init_task thread stack pointer initialization 
As TOP_OF_KERNEL_STACK_PADDING was defined as 0 on x86_64, it went
unnoticed that the initialization of the .sp field in INIT_THREAD and some
calculations in the low level startup code do not take the padding into
account.

FRED enabled kernels require a 16 byte padding, which means that the init
task initialization and the low level startup code use the wrong stack
offset.

Subtract TOP_OF_KERNEL_STACK_PADDING in all affected places to adjust for
this.

Fixes: 65c9cc9e2c ("x86/fred: Reserve space for the FRED stack frame")
Fixes: 3adee777ad ("x86/smpboot: Remove initial_stack on 64-bit")
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Xin Li (Intel) <xin@zytor.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Closes: https://lore.kernel.org/oe-lkp/202402262159.183c2a37-lkp@intel.com
Link: https://lore.kernel.org/r/20240304083333.449322-1-xin@zytor.com
2024-03-07 11:55:36 +01:00
..
acpi x86/acpi: Handle bogus MADT APIC tables gracefully 2023-12-18 14:21:44 +01:00
apic x86/cleanups changes for v6.8: 2024-01-08 17:23:32 -08:00
cpu x86/fred: Invoke FRED initialization code to enable FRED 2024-01-31 22:03:36 +01:00
fpu header cleanups for 6.8 2024-01-10 16:43:55 -08:00
kprobes x86/kprobes: fix incorrect return address calculation in kprobe_emulate_call_indirect 2024-01-04 14:10:59 +09:00
.gitignore
alternative.c Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
amd_gart_64.c arch/x86: Fix typos 2024-01-03 11:46:22 +01:00
amd_nb.c X86 core code updates: 2023-10-30 17:37:47 -10:00
aperture_64.c x86/pci: Use PCI_HEADER_TYPE_* instead of literals 2023-12-01 15:00:43 -06:00
apm_32.c x86/asm: Replace magic numbers in GDT descriptors, script-generated change 2023-12-20 10:57:38 +01:00
asm-offsets_32.c
asm-offsets_64.c x86: Fixup asm-offsets duplicate 2022-10-17 16:41:06 +02:00
asm-offsets.c x86/tdx: Make TDX_HYPERCALL asm similar to TDX_MODULE_CALL 2023-09-12 16:28:13 -07:00
audit_64.c x86/audit: Fix -Wmissing-variable-declarations warning for ia32_xyz_class 2023-08-30 10:11:16 +02:00
bootflag.c
callthunks.c x86/paravirt: Switch mixed paravirt/alternative calls to alternatives 2023-12-10 23:33:09 +01:00
cet.c x86/ibt: Convert IBT selftest to asm 2023-08-17 17:07:09 +02:00
cfi.c cfi: Flip headers 2023-12-15 16:25:55 -08:00
check.c
cpuid.c x86/cpuid: make cpuid_class a static const structure 2023-08-05 08:31:41 +02:00
crash_core_32.c
crash_core_64.c
crash_dump_32.c
crash_dump_64.c use less confusing names for iov_iter direction initializers 2022-11-25 13:01:55 -05:00
crash.c x86/crash: use SZ_1M macro instead of hardcoded value 2024-01-05 10:45:25 -08:00
devicetree.c x86/of: Move the x86_flattree_get_config() call out of x86_dtb_init() 2023-10-02 21:30:09 +02:00
doublefault_32.c x86: Avoid missing-prototype warnings for doublefault code 2023-05-18 11:56:18 -07:00
dumpstack_32.c x86/percpu: Move irq_stack variables next to current_task 2022-10-17 16:41:05 +02:00
dumpstack_64.c x86/percpu: Move irq_stack variables next to current_task 2022-10-17 16:41:05 +02:00
dumpstack.c x86/show_trace_log_lvl: Ensure stack pointer is aligned, again 2023-05-16 06:31:04 -07:00
e820.c x86/setup: Move duplicate boot_cpu_data definition out of the ifdeffery 2023-01-11 12:45:16 +01:00
early_printk.c
early-quirks.c x86/pci: Use PCI_HEADER_TYPE_* instead of literals 2023-12-01 15:00:43 -06:00
ebda.c
eisa.c
espfix_64.c x86/fred: No ESPFIX needed when FRED is enabled 2024-01-31 22:01:51 +01:00
fred.c x86/fred: Add FRED initialization functions 2024-01-31 22:03:32 +01:00
ftrace_32.S x86/headers: Replace #include <asm/export.h> with #include <linux/export.h> 2023-10-03 10:38:07 +02:00
ftrace_64.S x86/headers: Replace #include <asm/export.h> with #include <linux/export.h> 2023-10-03 10:38:07 +02:00
ftrace.c x86/ftrace: Remove unsued extern declaration ftrace_regs_caller_ret() 2023-07-10 21:38:13 -04:00
head32.c x86/microcode/32: Move early loading after paging enable 2023-10-18 22:15:01 +02:00
head64.c x86/asm: Always set A (accessed) flag in GDT descriptors 2023-12-20 10:57:51 +01:00
head_32.S Major microcode loader restructuring, cleanup and improvements by Thomas 2023-11-04 08:46:37 -10:00
head_64.S x86/fred: Fix init_task thread stack pointer initialization 2024-03-07 11:55:36 +01:00
hpet.c RTC for 6.8 2024-01-18 17:25:39 -08:00
hw_breakpoint.c x86/amd: Cache debug register values in percpu variables 2023-01-31 20:09:26 +01:00
i8237.c
i8253.c
i8259.c x86/i8259: Skip probing when ACPI/MADT advertises PCAT compatibility 2023-10-27 20:36:49 +02:00
ibt_selftest.S x86/ibt: Convert IBT selftest to asm 2023-08-17 17:07:09 +02:00
idt.c x86/traps: Add sysvec_install() to install a system interrupt handler 2024-01-31 22:02:36 +01:00
io_delay.c
ioport.c
irq_32.c x86/percpu: Move irq_stack variables next to current_task 2022-10-17 16:41:05 +02:00
irq_64.c x86/percpu: Move irq_stack variables next to current_task 2022-10-17 16:41:05 +02:00
irq_work.c x86/apic: Wrap IPI calls into helper functions 2023-08-09 12:00:55 -07:00
irq.c x86/apic: Nuke ack_APIC_irq() 2023-08-09 11:58:34 -07:00
irqflags.S x86/headers: Replace #include <asm/export.h> with #include <linux/export.h> 2023-10-03 10:38:07 +02:00
irqinit.c x86/fred: Invoke FRED initialization code to enable FRED 2024-01-31 22:03:36 +01:00
itmt.c arch/x86: Remove now superfluous sentinel elem from ctl_table arrays 2023-10-10 15:22:02 -07:00
jailhouse.c x86/apic: Remove the pointless APIC version check 2023-08-09 11:58:19 -07:00
jump_label.c
kdebugfs.c
kexec-bzimage64.c x86/kexec: fix incorrect argument passed to kexec_dprintk() 2023-12-29 12:22:28 -08:00
kgdb.c x86/kgdb: Fix a kerneldoc warning when build with W=1 2023-09-24 11:00:13 +02:00
ksysfs.c
kvm.c x86/traps: Add sysvec_install() to install a system interrupt handler 2024-01-31 22:02:36 +01:00
kvmclock.c Generic: 2024-01-17 13:03:37 -08:00
ldt.c arch/x86: Fix typos 2024-01-03 11:46:22 +01:00
machine_kexec_32.c
machine_kexec_64.c x86/kexec: fix incorrect end address passed to kernel_ident_mapping_init() 2023-12-29 12:22:29 -08:00
Makefile x86/fred: Add FRED initialization functions 2024-01-31 22:03:32 +01:00
mmconf-fam10h_64.c
module.c x86/paravirt: Switch mixed paravirt/alternative calls to alternatives 2023-12-10 23:33:09 +01:00
mpparse.c x86/apic: Sanitize APIC address setup 2023-08-09 11:58:20 -07:00
msr.c x86/MSR: make msr_class a static const structure 2023-08-05 08:31:42 +02:00
nmi_selftest.c x86/apic: Wrap IPI calls into helper functions 2023-08-09 12:00:55 -07:00
nmi.c x86/fred: Add a NMI entry stub for FRED 2024-01-31 22:02:20 +01:00
paravirt-spinlocks.c
paravirt.c x86/paravirt: Remove no longer needed paravirt patching code 2023-12-10 23:34:37 +01:00
pci-dma.c x86: always initialize xen-swiotlb when xen-pcifront is enabling 2023-07-31 17:54:27 +02:00
pcspeaker.c
perf_regs.c
platform-quirks.c x86/quirks: Include linux/pnp.h for arch_pnpbios_disabled() 2023-05-18 11:56:18 -07:00
pmem.c
probe_roms.c
process_32.c x86/resctl: fix scheduler confusion with 'current' 2023-03-08 11:48:11 -08:00
process_64.c x86/fred: Allow single-step trap and NMI when starting a new task 2024-01-31 22:02:00 +01:00
process.c arch/x86: Fix typos 2024-01-03 11:46:22 +01:00
process.h
ptrace.c x86: Add PTRACE interface for shadow stack 2023-08-02 15:01:51 -07:00
pvclock.c locking/atomic: treewide: use raw_atomic*_<op>() 2023-06-05 09:57:20 +02:00
quirks.c
reboot_fixups_32.c
reboot.c x86/reboot: Expose VMCS crash hooks if and only if KVM_{INTEL,AMD} is enabled 2023-08-03 15:37:14 -07:00
relocate_kernel_32.S
relocate_kernel_64.S x86,objtool: Split UNWIND_HINT_EMPTY in two 2023-03-23 23:18:58 +01:00
resource.c x86/PCI: Tidy E820 removal messages 2022-12-10 10:33:11 -06:00
rethook.c
rtc.c rtc: Extend timeout for waiting for UIP to clear to 1s 2023-12-17 22:33:55 +01:00
setup_percpu.c x86/asm: Add DB flag to 32-bit percpu GDT entry 2023-12-20 10:57:51 +01:00
setup.c - Add support managing TDX host hardware 2024-01-18 13:41:48 -08:00
sev_verify_cbit.S
sev-shared.c arch/x86: Fix typos 2024-01-03 11:46:22 +01:00
sev.c x86/sev: Fix kernel crash due to late update to read-only ghcb_version 2023-11-30 10:23:12 +01:00
shstk.c x86/shstk: Add warning for shadow stack double unmap 2023-09-19 09:18:34 -07:00
signal_32.c x86/shstk: Add user control-protection fault handler 2023-08-02 15:01:50 -07:00
signal_64.c x86/shstk: Delay signal entry SSP write until after user accesses 2023-11-08 08:55:37 -08:00
signal.c rseq: Split out rseq.h from sched.h 2023-12-27 11:49:56 -05:00
smp.c Revert "x86/smp: Put CPUs into INIT on shutdown if possible" 2023-10-15 12:02:02 -07:00
smpboot.c x86/smp: Export symbol cpu_clustergroup_mask() 2023-11-17 10:54:52 +01:00
stacktrace.c
static_call.c x86/static_call: Fix __static_call_fixup() 2023-08-17 13:24:09 +02:00
step.c
sys_ia32.c
sys_x86_64.c x86/mm: Introduce MAP_ABOVE4G 2023-07-11 14:12:19 -07:00
tboot.c
time.c
tls.c x86/gsseg: Move load_gs_index() to its own new header file 2023-01-12 13:06:36 +01:00
tls.h
topology.c x86/topology: convert to use arch_cpu_is_hotpluggable() 2023-12-06 12:41:49 +09:00
trace_clock.c
trace.c
tracepoint.c
traps.c x86/fred: Invoke FRED initialization code to enable FRED 2024-01-31 22:03:36 +01:00
tsc_msr.c
tsc_sync.c x86/tsc: Defer marking TSC unstable to a worker 2023-10-27 20:36:57 +02:00
tsc.c x86/tsc: Extend watchdog check exemption to 4-Sockets platform 2023-07-14 15:17:09 -07:00
umip.c
unwind_frame.c x86: kmsan: don't instrument stack walking functions 2022-10-03 14:03:25 -07:00
unwind_guess.c
unwind_orc.c x86/unwind/orc: Remove redundant initialization of 'mid' pointer in __orc_find() 2023-09-21 08:41:23 +02:00
uprobes.c uprobes/x86: Allow to probe a NOP instruction with 0x66 prefix 2022-12-05 11:55:18 +01:00
verify_cpu.S
vm86_32.c
vmlinux.lds.S x86/paravirt: Remove no longer needed paravirt patching code 2023-12-10 23:34:37 +01:00
vsmp_64.c x86/apic: Use u32 for phys_pkg_id() 2023-10-10 14:38:19 +02:00
x86_init.c - Fix a race window where load_unaligned_zeropad() could cause 2023-06-26 16:32:47 -07:00