[x86/asm] cdfac81296: kernel_BUG_at_arch/x86/kernel/alternative.c
FYI, we noticed the following commit:
commit: cdfac8129693572ef91b9e7022d6ae07f1c8cc38 ("x86/asm: Rewrite sync_core()
to use IRET-to-self")
https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git x86/boot
in testcase: boot
on test machine: qemu-system-i386 -enable-kvm -smp 2 -m 256M
caused below changes:
+-+++
| | 535a025bb9 | cdfac81296 |
+-+++
| boot_successes | 6 | 0 |
| boot_failures | 0 | 4 |
| kernel_BUG_at_arch/x86/kernel/alternative.c | 0 | 4 |
| invalid_opcode:#[##]SMP | 0 | 4 |
| EIP_is_at_apply_alternatives| 0 | 4 |
| Kernel_panic-not_syncing:Fatal_exception| 0 | 4 |
+-+++
[0.429066] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[0.447516] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[0.455310] [ cut here ]
[0.459612] kernel BUG at arch/x86/kernel/alternative.c:386!
[0.465842] invalid opcode: [#1] SMP
[0.469305] CPU: 0 PID: 0 Comm: swapper/0 Not tainted
4.9.0-rc7-00027-gcdfac81 #1
[0.476137] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
Debian-1.8.2-1 04/01/2014
[0.483617] task: c84cb040 task.stack: c84c4000
[0.486773] EIP: 0060:[] EFLAGS: 00210246 CPU: 0
[0.490857] EIP is at apply_alternatives+0xa5/0x7e3
[0.494426] EAX: d83b0ff0 EBX: c84abb75 ECX: EDX: 00ae
[0.499509] ESI: 0004 EDI: c84c5eb6 EBP: c84c5fbc ESP: c84c5e90
[0.503883] DS: 007b ES: 007b FS: 00d8 GS: SS: 0068
[0.508031] CR0: 80050033 CR2: CR3: 089df000 CR4: 0690
[0.512150] Stack:
[0.514412] c69f2b7c 0003 0004 fbfb 0ff0ae0f 0089 c84abb81
d83b6984
[0.529825] e58900e8 cf49340f c84c5eec 0002 c888dba0 c84c5f74 c84c5ed4
c683cc1e
[0.537271] c84c5f00 c84c5f14 c683d4f7 c84c5f00 002b c84c5f60 0143
03c0003f
[0.545924] Call Trace:
[0.548885] [] ? __kmem_cache_create+0x37d/0x5c7
[0.552895] [] ? __cpuid+0x1a/0x2e
[0.556362] [] ? cpuid4_cache_lookup_regs+0x4ad/0x52f
To reproduce:
git clone
git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k job-script # job-script is attached in this
email
Thanks,
Kernel Test Robot
#
# Automatically generated file; DO NOT EDIT.
# Linux/i386 4.9.0-rc7 Kernel Configuration
#
# CONFIG_64BIT is not set
CONFIG_X86_32=y
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_OUTPUT_FORMAT="elf32-i386"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig"
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_BITS_MAX=16
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_X86_32_SMP=y
CONFIG_X86_32_LAZY_GS=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_DEBUG_RODATA=y
CONFIG_PGTABLE_LEVELS=2
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_CONSTRUCTORS=y
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_EXTABLE_SORT=y
CONFIG_THREAD_INFO_IN_TASK=y
#
# General setup
#
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_CROSS_COMPILE=""
# CONFIG_COMPILE_TEST is not set
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
# CONFIG_KERNEL_GZIP is not set
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
CONFIG_KERNEL_LZ4=y
CONFIG_DEFAULT_HOSTNAME="(none)"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
# CONFIG_POSIX_MQUEUE is not set
# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_FHANDLE=y
CONFIG_USELIB=y
CONFIG_AUDIT=y
CONFIG_HAVE_ARCH_AUDITSYSCALL=y
CONFIG_AUDITSYSCALL=y
CONFIG_AUDIT_WATCH=y
CONFIG_AUDIT_TREE=y
#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_GENERIC_IRQ_CHIP=y
[x86/asm] cdfac81296: kernel_BUG_at_arch/x86/kernel/alternative.c
FYI, we noticed the following commit:
commit: cdfac8129693572ef91b9e7022d6ae07f1c8cc38 ("x86/asm: Rewrite sync_core()
to use IRET-to-self")
https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git x86/boot
in testcase: boot
on test machine: qemu-system-i386 -enable-kvm -smp 2 -m 256M
caused below changes:
+-+++
| | 535a025bb9 | cdfac81296 |
+-+++
| boot_successes | 6 | 0 |
| boot_failures | 0 | 4 |
| kernel_BUG_at_arch/x86/kernel/alternative.c | 0 | 4 |
| invalid_opcode:#[##]SMP | 0 | 4 |
| EIP_is_at_apply_alternatives| 0 | 4 |
| Kernel_panic-not_syncing:Fatal_exception| 0 | 4 |
+-+++
[0.429066] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[0.447516] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[0.455310] [ cut here ]
[0.459612] kernel BUG at arch/x86/kernel/alternative.c:386!
[0.465842] invalid opcode: [#1] SMP
[0.469305] CPU: 0 PID: 0 Comm: swapper/0 Not tainted
4.9.0-rc7-00027-gcdfac81 #1
[0.476137] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
Debian-1.8.2-1 04/01/2014
[0.483617] task: c84cb040 task.stack: c84c4000
[0.486773] EIP: 0060:[] EFLAGS: 00210246 CPU: 0
[0.490857] EIP is at apply_alternatives+0xa5/0x7e3
[0.494426] EAX: d83b0ff0 EBX: c84abb75 ECX: EDX: 00ae
[0.499509] ESI: 0004 EDI: c84c5eb6 EBP: c84c5fbc ESP: c84c5e90
[0.503883] DS: 007b ES: 007b FS: 00d8 GS: SS: 0068
[0.508031] CR0: 80050033 CR2: CR3: 089df000 CR4: 0690
[0.512150] Stack:
[0.514412] c69f2b7c 0003 0004 fbfb 0ff0ae0f 0089 c84abb81
d83b6984
[0.529825] e58900e8 cf49340f c84c5eec 0002 c888dba0 c84c5f74 c84c5ed4
c683cc1e
[0.537271] c84c5f00 c84c5f14 c683d4f7 c84c5f00 002b c84c5f60 0143
03c0003f
[0.545924] Call Trace:
[0.548885] [] ? __kmem_cache_create+0x37d/0x5c7
[0.552895] [] ? __cpuid+0x1a/0x2e
[0.556362] [] ? cpuid4_cache_lookup_regs+0x4ad/0x52f
To reproduce:
git clone
git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k job-script # job-script is attached in this
email
Thanks,
Kernel Test Robot
#
# Automatically generated file; DO NOT EDIT.
# Linux/i386 4.9.0-rc7 Kernel Configuration
#
# CONFIG_64BIT is not set
CONFIG_X86_32=y
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_OUTPUT_FORMAT="elf32-i386"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig"
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_BITS_MAX=16
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_X86_32_SMP=y
CONFIG_X86_32_LAZY_GS=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_DEBUG_RODATA=y
CONFIG_PGTABLE_LEVELS=2
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_CONSTRUCTORS=y
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_EXTABLE_SORT=y
CONFIG_THREAD_INFO_IN_TASK=y
#
# General setup
#
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_CROSS_COMPILE=""
# CONFIG_COMPILE_TEST is not set
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
# CONFIG_KERNEL_GZIP is not set
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
CONFIG_KERNEL_LZ4=y
CONFIG_DEFAULT_HOSTNAME="(none)"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
# CONFIG_POSIX_MQUEUE is not set
# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_FHANDLE=y
CONFIG_USELIB=y
CONFIG_AUDIT=y
CONFIG_HAVE_ARCH_AUDITSYSCALL=y
CONFIG_AUDITSYSCALL=y
CONFIG_AUDIT_WATCH=y
CONFIG_AUDIT_TREE=y
#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_GENERIC_IRQ_CHIP=y
