Commit "new primitive: discard_new_inode()" introduces a problem

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* Commit "new primitive: discard_new_inode()" introduces a problem
@ 2018-08-01 14:43 Kirill Tkhai
  2018-08-01 15:19 ` Al Viro
  0 siblings, 1 reply; 11+ messages in thread
From: Kirill Tkhai @ 2018-08-01 14:43 UTC (permalink / raw)
  To: Alexander Viro, linux-fsdevel@vger.kernel.org, LKML

Hi, Al,

commit 22dc9a1682722fda8603991595528b87e90436f6
Author: Al Viro <viro@zeniv.linux.org.uk>
Date:   Thu Jun 28 15:53:17 2018 -0400

    new primitive: discard_new_inode()

from current linux-next introduces the following problem.
It reproduces 100% in my test VM:

# cat /etc/mtab 
/dev/sda1 / ext4 rw 0 0
proc /proc proc rw 0 0
sysfs /sys sysfs rw 0 0
devpts /dev/pts devpts rw,gid=5,mode=620 0 0
tmpfs /dev/shm tmpfs rw,noexec,nosuid,nodev 0 0
# echo 3 > /proc/sys/vm/drop_caches 
# cat /etc/mtab 
cat: /etc/mtab: Cannot allocate memory

Though:
# free
             total       used       free     shared    buffers     cached
Mem:       4047432      99988    3947444          0       1340      49148
-/+ buffers/cache:      49500    3997932
Swap:            0          0          0

Kirill

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: Commit "new primitive: discard_new_inode()" introduces a problem
  2018-08-01 14:43 Commit "new primitive: discard_new_inode()" introduces a problem Kirill Tkhai
@ 2018-08-01 15:19 ` Al Viro
  2018-08-01 15:43   ` Kirill Tkhai
  0 siblings, 1 reply; 11+ messages in thread
From: Al Viro @ 2018-08-01 15:19 UTC (permalink / raw)
  To: Kirill Tkhai; +Cc: linux-fsdevel@vger.kernel.org, LKML

On Wed, Aug 01, 2018 at 05:43:35PM +0300, Kirill Tkhai wrote:
> Hi, Al,
> 
> commit 22dc9a1682722fda8603991595528b87e90436f6
> Author: Al Viro <viro@zeniv.linux.org.uk>
> Date:   Thu Jun 28 15:53:17 2018 -0400
> 
>     new primitive: discard_new_inode()
> 
> from current linux-next introduces the following problem.
> It reproduces 100% in my test VM:
> 
> # cat /etc/mtab 
> /dev/sda1 / ext4 rw 0 0
> proc /proc proc rw 0 0
> sysfs /sys sysfs rw 0 0
> devpts /dev/pts devpts rw,gid=5,mode=620 0 0
> tmpfs /dev/shm tmpfs rw,noexec,nosuid,nodev 0 0
> # echo 3 > /proc/sys/vm/drop_caches 
> # cat /etc/mtab 
> cat: /etc/mtab: Cannot allocate memory

Can't reproduce here...  Could you post your .config (and
toolchain information, for the sake of completeness)?

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: Commit "new primitive: discard_new_inode()" introduces a problem
  2018-08-01 15:19 ` Al Viro
@ 2018-08-01 15:43   ` Kirill Tkhai
  2018-08-01 16:11     ` Al Viro
  0 siblings, 1 reply; 11+ messages in thread
From: Kirill Tkhai @ 2018-08-01 15:43 UTC (permalink / raw)
  To: Al Viro; +Cc: linux-fsdevel@vger.kernel.org, LKML

[-- Attachment #1: Type: text/plain, Size: 2645 bytes --]

On 01.08.2018 18:19, Al Viro wrote:
> On Wed, Aug 01, 2018 at 05:43:35PM +0300, Kirill Tkhai wrote:
>> Hi, Al,
>>
>> commit 22dc9a1682722fda8603991595528b87e90436f6
>> Author: Al Viro <viro@zeniv.linux.org.uk>
>> Date:   Thu Jun 28 15:53:17 2018 -0400
>>
>>     new primitive: discard_new_inode()
>>
>> from current linux-next introduces the following problem.
>> It reproduces 100% in my test VM:
>>
>> # cat /etc/mtab 
>> /dev/sda1 / ext4 rw 0 0
>> proc /proc proc rw 0 0
>> sysfs /sys sysfs rw 0 0
>> devpts /dev/pts devpts rw,gid=5,mode=620 0 0
>> tmpfs /dev/shm tmpfs rw,noexec,nosuid,nodev 0 0
>> # echo 3 > /proc/sys/vm/drop_caches 
>> # cat /etc/mtab 
>> cat: /etc/mtab: Cannot allocate memory
> 
> Can't reproduce here...  Could you post your .config (and
> toolchain information, for the sake of completeness)?

The .config is in attachments

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 8.2.0-1' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-8 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 8.2.0 (Debian 8.2.0-1)

$ ld -v
GNU ld (GNU Binutils for Debian) 2.31.1

There is init (not systemd) in the VM, and the distribution packages are old and manually corrupted.
Maybe there is some unusual sequence of init scripts, I don't know.

I've just tried with gcc-6:

#CC=gcc-6 make bzImage CC=gcc-6

and there is the problem too.

#git status
HEAD detached at 22dc9a168272

#git remote -v
origin	git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git (fetch)

Kirill

[-- Attachment #2: .config --]
[-- Type: text/plain, Size: 45545 bytes --]

#
# Automatically generated file; DO NOT EDIT.
# Linux/x86 4.18.0-rc1 Kernel Configuration
#

#
# Compiler: gcc-6 (Debian 6.4.0-19) 6.4.0 20180727
#
CONFIG_64BIT=y
CONFIG_X86_64=y
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_OUTPUT_FORMAT="elf64-x86-64"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/x86_64_defconfig"
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MIN=28
CONFIG_ARCH_MMAP_RND_BITS_MAX=32
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
CONFIG_GENERIC_HWEIGHT=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_ARCH_HAS_FILTER_PGPROT=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_ZONE_DMA32=y
CONFIG_AUDIT_ARCH=y
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_X86_64_SMP=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_PGTABLE_LEVELS=4
CONFIG_CC_IS_GCC=y
CONFIG_GCC_VERSION=60400
CONFIG_CLANG_VERSION=0
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_EXTABLE_SORT=y
CONFIG_THREAD_INFO_IN_TASK=y

#
# General setup
#
CONFIG_INIT_ENV_ARG_LIMIT=32
# CONFIG_COMPILE_TEST is not set
CONFIG_LOCALVERSION=""
# CONFIG_LOCALVERSION_AUTO is not set
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=y
# 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 is not set
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_POSIX_MQUEUE_SYSCTL=y
CONFIG_CROSS_MEMORY_ATTACH=y
CONFIG_USELIB=y
# CONFIG_AUDIT is not set
CONFIG_HAVE_ARCH_AUDITSYSCALL=y

#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_GENERIC_IRQ_MIGRATION=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_DOMAIN_HIERARCHY=y
CONFIG_GENERIC_MSI_IRQ=y
CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
CONFIG_GENERIC_IRQ_MATRIX_ALLOCATOR=y
CONFIG_GENERIC_IRQ_RESERVATION_MODE=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
# CONFIG_GENERIC_IRQ_DEBUGFS is not set
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_ARCH_CLOCKSOURCE_DATA=y
CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
CONFIG_GENERIC_CMOS_UPDATE=y

#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
CONFIG_NO_HZ_IDLE=y
# CONFIG_NO_HZ_FULL is not set
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y

#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
# CONFIG_IRQ_TIME_ACCOUNTING is not set
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
# CONFIG_TASKSTATS is not set
# CONFIG_CPU_ISOLATION is not set

#
# RCU Subsystem
#
CONFIG_PREEMPT_RCU=y
# CONFIG_RCU_EXPERT is not set
CONFIG_SRCU=y
CONFIG_TREE_SRCU=y
CONFIG_TASKS_RCU=y
CONFIG_RCU_STALL_COMMON=y
CONFIG_RCU_NEED_SEGCBLIST=y
# CONFIG_IKCONFIG is not set
CONFIG_LOG_BUF_SHIFT=18
CONFIG_LOG_CPU_MAX_BUF_SHIFT=12
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
CONFIG_ARCH_SUPPORTS_INT128=y
CONFIG_CGROUPS=y
CONFIG_PAGE_COUNTER=y
CONFIG_MEMCG=y
# CONFIG_MEMCG_SWAP is not set
# CONFIG_BLK_CGROUP is not set
CONFIG_CGROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
# CONFIG_CFS_BANDWIDTH is not set
CONFIG_RT_GROUP_SCHED=y
# CONFIG_CGROUP_PIDS is not set
# CONFIG_CGROUP_RDMA is not set
# CONFIG_CGROUP_FREEZER is not set
# CONFIG_CPUSETS is not set
# CONFIG_CGROUP_DEVICE is not set
# CONFIG_CGROUP_CPUACCT is not set
# CONFIG_CGROUP_PERF is not set
# CONFIG_CGROUP_DEBUG is not set
CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_IPC_NS is not set
CONFIG_USER_NS=y
CONFIG_PID_NS=y
CONFIG_NET_NS=y
# CONFIG_SCHED_AUTOGROUP is not set
# CONFIG_SYSFS_DEPRECATED is not set
# CONFIG_RELAY is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_GZIP=y
# CONFIG_RD_BZIP2 is not set
# CONFIG_RD_LZMA is not set
# CONFIG_RD_XZ is not set
# CONFIG_RD_LZO is not set
# CONFIG_RD_LZ4 is not set
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_SYSCTL=y
CONFIG_ANON_INODES=y
CONFIG_SYSCTL_EXCEPTION_TRACE=y
CONFIG_HAVE_PCSPKR_PLATFORM=y
CONFIG_BPF=y
CONFIG_EXPERT=y
CONFIG_MULTIUSER=y
CONFIG_SGETMASK_SYSCALL=y
# CONFIG_SYSFS_SYSCALL is not set
# CONFIG_SYSCTL_SYSCALL is not set
CONFIG_FHANDLE=y
CONFIG_POSIX_TIMERS=y
CONFIG_PRINTK=y
CONFIG_PRINTK_NMI=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_PCSPKR_PLATFORM=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_FUTEX_PI=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_ADVISE_SYSCALLS=y
CONFIG_MEMBARRIER=y
# CONFIG_CHECKPOINT_RESTORE is not set
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_KALLSYMS_ABSOLUTE_PERCPU=y
CONFIG_KALLSYMS_BASE_RELATIVE=y
# CONFIG_BPF_SYSCALL is not set
# CONFIG_USERFAULTFD is not set
CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
CONFIG_RSEQ=y
# CONFIG_DEBUG_RSEQ is not set
# CONFIG_EMBEDDED is not set
CONFIG_HAVE_PERF_EVENTS=y
# CONFIG_PC104 is not set

#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLUB_DEBUG=y
# CONFIG_SLUB_MEMCG_SYSFS_ON is not set
# CONFIG_COMPAT_BRK is not set
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
CONFIG_SLAB_MERGE_DEFAULT=y
# CONFIG_SLAB_FREELIST_RANDOM is not set
# CONFIG_SLAB_FREELIST_HARDENED is not set
CONFIG_SLUB_CPU_PARTIAL=y
CONFIG_PROFILING=y
# CONFIG_OPROFILE is not set
CONFIG_HAVE_OPROFILE=y
CONFIG_OPROFILE_NMI_TIMER=y
# CONFIG_JUMP_LABEL is not set
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_KPROBES_ON_FTRACE=y
CONFIG_HAVE_FUNCTION_ERROR_INJECTION=y
CONFIG_HAVE_NMI=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
CONFIG_ARCH_HAS_SET_MEMORY=y
CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y
CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_RSEQ=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y
CONFIG_HAVE_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_PERF_EVENTS_NMI=y
CONFIG_HAVE_HARDLOCKUP_DETECTOR_PERF=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_HAVE_RCU_TABLE_FREE=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
CONFIG_HAVE_CMPXCHG_LOCAL=y
CONFIG_HAVE_CMPXCHG_DOUBLE=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_SECCOMP_FILTER=y
CONFIG_PLUGIN_HOSTCC=""
CONFIG_HAVE_GCC_PLUGINS=y
CONFIG_HAVE_STACKPROTECTOR=y
CONFIG_CC_HAS_STACKPROTECTOR_NONE=y
CONFIG_STACKPROTECTOR=y
CONFIG_STACKPROTECTOR_STRONG=y
CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES=y
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD=y
CONFIG_HAVE_ARCH_HUGE_VMAP=y
CONFIG_HAVE_ARCH_SOFT_DIRTY=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_HAVE_EXIT_THREAD=y
CONFIG_ARCH_MMAP_RND_BITS=28
CONFIG_HAVE_COPY_THREAD_TLS=y
CONFIG_HAVE_STACK_VALIDATION=y
CONFIG_HAVE_ARCH_VMAP_STACK=y
CONFIG_VMAP_STACK=y
CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
CONFIG_STRICT_KERNEL_RWX=y
CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
CONFIG_ARCH_HAS_REFCOUNT=y
# CONFIG_REFCOUNT_FULL is not set

#
# GCOV-based kernel profiling
#
# CONFIG_GCOV_KERNEL is not set
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
# CONFIG_MODULES is not set
CONFIG_MODULES_TREE_LOOKUP=y
CONFIG_BLOCK=y
CONFIG_BLK_SCSI_REQUEST=y
CONFIG_BLK_DEV_BSG=y
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
# CONFIG_BLK_DEV_ZONED is not set
# CONFIG_BLK_CMDLINE_PARSER is not set
# CONFIG_BLK_WBT is not set
# CONFIG_BLK_DEBUG_FS is not set
# CONFIG_BLK_SED_OPAL is not set

#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_EFI_PARTITION=y
CONFIG_BLK_MQ_PCI=y
CONFIG_BLK_MQ_VIRTIO=y

#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_DEFAULT_NOOP=y
CONFIG_DEFAULT_IOSCHED="noop"
# CONFIG_MQ_IOSCHED_DEADLINE is not set
# CONFIG_MQ_IOSCHED_KYBER is not set
# CONFIG_IOSCHED_BFQ is not set
CONFIG_UNINLINE_SPIN_UNLOCK=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_MUTEX_SPIN_ON_OWNER=y
CONFIG_RWSEM_SPIN_ON_OWNER=y
CONFIG_LOCK_SPIN_ON_OWNER=y
CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_QUEUED_SPINLOCKS=y
CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
CONFIG_QUEUED_RWLOCKS=y
CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE=y
CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y
CONFIG_CC_HAS_SANE_STACKPROTECTOR=y

#
# Processor type and features
#
CONFIG_ZONE_DMA=y
CONFIG_SMP=y
CONFIG_X86_FEATURE_NAMES=y
CONFIG_X86_MPPARSE=y
# CONFIG_GOLDFISH is not set
# CONFIG_RETPOLINE is not set
# CONFIG_INTEL_RDT is not set
# CONFIG_X86_EXTENDED_PLATFORM is not set
# CONFIG_IOSF_MBI is not set
CONFIG_SCHED_OMIT_FRAME_POINTER=y
# CONFIG_HYPERVISOR_GUEST is not set
CONFIG_NO_BOOTMEM=y
# CONFIG_MK8 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
CONFIG_GENERIC_CPU=y
CONFIG_X86_INTERNODE_CACHE_SHIFT=6
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=64
CONFIG_X86_DEBUGCTLMSR=y
# CONFIG_PROCESSOR_SELECT is not set
CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_CENTAUR=y
CONFIG_HPET_TIMER=y
# CONFIG_DMI is not set
# CONFIG_GART_IOMMU is not set
# CONFIG_CALGARY_IOMMU is not set
# CONFIG_MAXSMP is not set
CONFIG_NR_CPUS_RANGE_BEGIN=2
CONFIG_NR_CPUS_RANGE_END=512
CONFIG_NR_CPUS_DEFAULT=64
CONFIG_NR_CPUS=64
CONFIG_SCHED_SMT=y
CONFIG_SCHED_MC=y
# CONFIG_SCHED_MC_PRIO is not set
# CONFIG_PREEMPT_NONE is not set
# CONFIG_PREEMPT_VOLUNTARY is not set
CONFIG_PREEMPT=y
CONFIG_PREEMPT_COUNT=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
# CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS is not set
# CONFIG_X86_MCE is not set

#
# Performance monitoring
#
# CONFIG_PERF_EVENTS_INTEL_UNCORE is not set
# CONFIG_PERF_EVENTS_INTEL_RAPL is not set
# CONFIG_PERF_EVENTS_INTEL_CSTATE is not set
# CONFIG_PERF_EVENTS_AMD_POWER is not set
# CONFIG_X86_16BIT is not set
CONFIG_X86_VSYSCALL_EMULATION=y
# CONFIG_I8K is not set
# CONFIG_MICROCODE is not set
# CONFIG_X86_MSR is not set
# CONFIG_X86_CPUID is not set
# CONFIG_X86_5LEVEL is not set
CONFIG_X86_DIRECT_GBPAGES=y
CONFIG_ARCH_HAS_MEM_ENCRYPT=y
# CONFIG_AMD_MEM_ENCRYPT is not set
# CONFIG_NUMA is not set
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_DEFAULT=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_HAVE_MEMORY_PRESENT=y
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_SPARSEMEM_ALLOC_MEM_MAP_TOGETHER=y
# CONFIG_SPARSEMEM_VMEMMAP is not set
CONFIG_HAVE_MEMBLOCK=y
CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
CONFIG_HAVE_GENERIC_GUP=y
CONFIG_ARCH_DISCARD_MEMBLOCK=y
# CONFIG_MEMORY_HOTPLUG is not set
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
# CONFIG_COMPACTION is not set
CONFIG_PHYS_ADDR_T_64BIT=y
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
# CONFIG_TRANSPARENT_HUGEPAGE is not set
CONFIG_ARCH_WANTS_THP_SWAP=y
# CONFIG_CLEANCACHE is not set
# CONFIG_FRONTSWAP is not set
# CONFIG_CMA is not set
# CONFIG_ZPOOL is not set
# CONFIG_ZBUD is not set
# CONFIG_ZSMALLOC is not set
CONFIG_GENERIC_EARLY_IOREMAP=y
# CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
# CONFIG_IDLE_PAGE_TRACKING is not set
CONFIG_ARCH_HAS_ZONE_DEVICE=y
# CONFIG_PERCPU_STATS is not set
# CONFIG_GUP_BENCHMARK is not set
CONFIG_ARCH_HAS_PTE_SPECIAL=y
# CONFIG_X86_PMEM_LEGACY is not set
# CONFIG_X86_CHECK_BIOS_CORRUPTION is not set
CONFIG_X86_RESERVE_LOW=64
# CONFIG_MTRR is not set
# CONFIG_ARCH_RANDOM is not set
# CONFIG_X86_SMAP is not set
# CONFIG_X86_INTEL_UMIP is not set
# CONFIG_X86_INTEL_MPX is not set
# CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS is not set
CONFIG_SECCOMP=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
CONFIG_HZ_1000=y
CONFIG_HZ=1000
CONFIG_SCHED_HRTICK=y
# CONFIG_KEXEC is not set
CONFIG_CRASH_DUMP=y
CONFIG_PHYSICAL_START=0x1000000
CONFIG_RELOCATABLE=y
# CONFIG_RANDOMIZE_BASE is not set
CONFIG_PHYSICAL_ALIGN=0x200000
# CONFIG_HOTPLUG_CPU is not set
CONFIG_LEGACY_VSYSCALL_EMULATE=y
# CONFIG_LEGACY_VSYSCALL_NONE is not set
# CONFIG_CMDLINE_BOOL is not set
CONFIG_MODIFY_LDT_SYSCALL=y
CONFIG_HAVE_LIVEPATCH=y
CONFIG_ARCH_HAS_ADD_PAGES=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y

#
# Power management and ACPI options
#
# CONFIG_SUSPEND is not set
# CONFIG_HIBERNATION is not set
# CONFIG_PM is not set
# CONFIG_ACPI is not set
# CONFIG_SFI is not set

#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set

#
# CPU Idle
#
# CONFIG_CPU_IDLE is not set

#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_DOMAINS=y
# CONFIG_PCI_CNB20LE_QUIRK is not set
# CONFIG_PCIEPORTBUS is not set
CONFIG_PCI_MSI=y
CONFIG_PCI_MSI_IRQ_DOMAIN=y
# CONFIG_PCI_QUIRKS is not set
# CONFIG_PCI_DEBUG is not set
# CONFIG_PCI_STUB is not set
CONFIG_PCI_LOCKLESS_CONFIG=y
# CONFIG_PCI_IOV is not set
# CONFIG_PCI_PRI is not set
# CONFIG_PCI_PASID is not set
# CONFIG_HOTPLUG_PCI is not set

#
# PCI controller drivers
#

#
# Cadence PCIe controllers support
#
# CONFIG_VMD is not set

#
# DesignWare PCI Core Support
#
# CONFIG_PCIE_DW_PLAT_HOST is not set

#
# PCI Endpoint
#
# CONFIG_PCI_ENDPOINT is not set

#
# PCI switch controller drivers
#
# CONFIG_PCI_SW_SWITCHTEC is not set
# CONFIG_ISA_BUS is not set
# CONFIG_ISA_DMA_API is not set
CONFIG_AMD_NB=y
# CONFIG_PCCARD is not set
# CONFIG_RAPIDIO is not set
# CONFIG_X86_SYSFB is not set

#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
CONFIG_ELFCORE=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_BINFMT_SCRIPT=y
CONFIG_BINFMT_MISC=y
CONFIG_COREDUMP=y
# CONFIG_IA32_EMULATION is not set
# CONFIG_X86_X32 is not set
CONFIG_X86_DEV_DMA_OPS=y
CONFIG_NET=y

#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_DIAG is not set
CONFIG_UNIX=y
# CONFIG_UNIX_DIAG is not set
# CONFIG_TLS is not set
# CONFIG_XFRM_USER is not set
# CONFIG_NET_KEY is not set
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE_DEMUX is not set
# CONFIG_SYN_COOKIES is not set
# CONFIG_NET_FOU is not set
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_DIAG is not set
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
# CONFIG_IPV6 is not set
# CONFIG_NETWORK_SECMARK is not set
# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
# CONFIG_NETFILTER is not set
# CONFIG_BPFILTER is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_L2TP is not set
# CONFIG_BRIDGE is not set
CONFIG_HAVE_NET_DSA=y
# CONFIG_NET_DSA is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_IEEE802154 is not set
# CONFIG_NET_SCHED is not set
# CONFIG_DCB is not set
# CONFIG_BATMAN_ADV is not set
# CONFIG_OPENVSWITCH is not set
# CONFIG_VSOCKETS is not set
# CONFIG_NETLINK_DIAG is not set
# CONFIG_MPLS is not set
# CONFIG_NET_NSH is not set
# CONFIG_HSR is not set
# CONFIG_NET_SWITCHDEV is not set
# CONFIG_NET_L3_MASTER_DEV is not set
# CONFIG_NET_NCSI is not set
CONFIG_RPS=y
CONFIG_RFS_ACCEL=y
CONFIG_XPS=y
# CONFIG_CGROUP_NET_PRIO is not set
# CONFIG_CGROUP_NET_CLASSID is not set
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y
CONFIG_NET_FLOW_LIMIT=y

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
# CONFIG_AF_KCM is not set
# CONFIG_WIRELESS is not set
# CONFIG_WIMAX is not set
# CONFIG_RFKILL is not set
# CONFIG_NET_9P is not set
# CONFIG_CAIF is not set
# CONFIG_CEPH_LIB is not set
# CONFIG_NFC is not set
# CONFIG_PSAMPLE is not set
# CONFIG_NET_IFE is not set
# CONFIG_LWTUNNEL is not set
# CONFIG_NET_DEVLINK is not set
CONFIG_MAY_USE_DEVLINK=y
CONFIG_FAILOVER=y
CONFIG_HAVE_EBPF_JIT=y

#
# Device Drivers
#

#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER=y
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y

#
# Firmware loader
#
CONFIG_FW_LOADER=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_FW_LOADER_USER_HELPER is not set
CONFIG_ALLOW_DEV_COREDUMP=y
# CONFIG_DEBUG_DRIVER is not set
CONFIG_DEBUG_DEVRES=y
# CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
CONFIG_GENERIC_CPU_AUTOPROBE=y
CONFIG_GENERIC_CPU_VULNERABILITIES=y

#
# Bus devices
#
CONFIG_CONNECTOR=y
CONFIG_PROC_EVENTS=y
# CONFIG_MTD is not set
# CONFIG_OF is not set
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
# CONFIG_PARPORT is not set
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_NULL_BLK is not set
# CONFIG_BLK_DEV_PCIESSD_MTIP32XX is not set
# CONFIG_BLK_DEV_DAC960 is not set
# CONFIG_BLK_DEV_UMEM is not set
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
# CONFIG_BLK_DEV_CRYPTOLOOP is not set
# CONFIG_BLK_DEV_DRBD is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SKD is not set
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_VIRTIO_BLK is not set
# CONFIG_BLK_DEV_RBD is not set
# CONFIG_BLK_DEV_RSXX is not set

#
# NVME Support
#
# CONFIG_BLK_DEV_NVME is not set
# CONFIG_NVME_FC is not set

#
# Misc devices
#
# CONFIG_DUMMY_IRQ is not set
# CONFIG_IBM_ASM is not set
# CONFIG_PHANTOM is not set
# CONFIG_SGI_IOC4 is not set
# CONFIG_TIFM_CORE is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_HP_ILO is not set
# CONFIG_SRAM is not set
# CONFIG_PCI_ENDPOINT_TEST is not set
# CONFIG_C2PORT is not set

#
# EEPROM support
#
# CONFIG_EEPROM_93CX6 is not set
# CONFIG_CB710_CORE is not set

#
# Texas Instruments shared transport line discipline
#

#
# Altera FPGA firmware download module (requires I2C)
#
# CONFIG_INTEL_MEI is not set
# CONFIG_INTEL_MEI_ME is not set
# CONFIG_INTEL_MEI_TXE is not set
# CONFIG_VMWARE_VMCI is not set

#
# Intel MIC & related support
#

#
# Intel MIC Bus Driver
#
# CONFIG_INTEL_MIC_BUS is not set

#
# SCIF Bus Driver
#
# CONFIG_SCIF_BUS is not set

#
# VOP Bus Driver
#
# CONFIG_VOP_BUS is not set

#
# Intel MIC Host Driver
#

#
# Intel MIC Card Driver
#

#
# SCIF Driver
#

#
# Intel MIC Coprocessor State Management (COSM) Drivers
#

#
# VOP Driver
#
# CONFIG_GENWQE is not set
# CONFIG_ECHO is not set
# CONFIG_MISC_RTSX_PCI is not set
CONFIG_HAVE_IDE=y
# CONFIG_IDE is not set

#
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
# CONFIG_SCSI_MQ_DEFAULT is not set
# CONFIG_SCSI_PROC_FS is not set

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=y
# CONFIG_CHR_DEV_ST is not set
# CONFIG_CHR_DEV_OSST is not set
# CONFIG_BLK_DEV_SR is not set
# CONFIG_CHR_DEV_SG is not set
# CONFIG_CHR_DEV_SCH is not set
# CONFIG_SCSI_CONSTANTS is not set
# CONFIG_SCSI_LOGGING is not set
# CONFIG_SCSI_SCAN_ASYNC is not set

#
# SCSI Transports
#
# CONFIG_SCSI_SPI_ATTRS is not set
# CONFIG_SCSI_FC_ATTRS is not set
# CONFIG_SCSI_ISCSI_ATTRS is not set
# CONFIG_SCSI_SAS_ATTRS is not set
# CONFIG_SCSI_SAS_LIBSAS is not set
# CONFIG_SCSI_SRP_ATTRS is not set
# CONFIG_SCSI_LOWLEVEL is not set
# CONFIG_SCSI_DH is not set
# CONFIG_SCSI_OSD_INITIATOR is not set
CONFIG_ATA=y
CONFIG_ATA_VERBOSE_ERROR=y
# CONFIG_SATA_PMP is not set

#
# Controllers with non-SFF native interface
#
# CONFIG_SATA_AHCI is not set
# CONFIG_SATA_AHCI_PLATFORM is not set
# CONFIG_SATA_INIC162X is not set
# CONFIG_SATA_ACARD_AHCI is not set
# CONFIG_SATA_SIL24 is not set
CONFIG_ATA_SFF=y

#
# SFF controllers with custom DMA interface
#
# CONFIG_PDC_ADMA is not set
# CONFIG_SATA_QSTOR is not set
# CONFIG_SATA_SX4 is not set
CONFIG_ATA_BMDMA=y

#
# SATA SFF controllers with BMDMA
#
CONFIG_ATA_PIIX=y
# CONFIG_SATA_MV is not set
# CONFIG_SATA_NV is not set
# CONFIG_SATA_PROMISE is not set
# CONFIG_SATA_SIL is not set
# CONFIG_SATA_SIS is not set
# CONFIG_SATA_SVW is not set
# CONFIG_SATA_ULI is not set
# CONFIG_SATA_VIA is not set
# CONFIG_SATA_VITESSE is not set

#
# PATA SFF controllers with BMDMA
#
# CONFIG_PATA_ALI is not set
# CONFIG_PATA_AMD is not set
# CONFIG_PATA_ARTOP is not set
# CONFIG_PATA_ATIIXP is not set
# CONFIG_PATA_ATP867X is not set
# CONFIG_PATA_CMD64X is not set
# CONFIG_PATA_CYPRESS is not set
# CONFIG_PATA_EFAR is not set
# CONFIG_PATA_HPT366 is not set
# CONFIG_PATA_HPT37X is not set
# CONFIG_PATA_HPT3X2N is not set
# CONFIG_PATA_HPT3X3 is not set
# CONFIG_PATA_IT8213 is not set
# CONFIG_PATA_IT821X is not set
# CONFIG_PATA_JMICRON is not set
# CONFIG_PATA_MARVELL is not set
# CONFIG_PATA_NETCELL is not set
# CONFIG_PATA_NINJA32 is not set
# CONFIG_PATA_NS87415 is not set
# CONFIG_PATA_OLDPIIX is not set
# CONFIG_PATA_OPTIDMA is not set
# CONFIG_PATA_PDC2027X is not set
# CONFIG_PATA_PDC_OLD is not set
# CONFIG_PATA_RADISYS is not set
# CONFIG_PATA_RDC is not set
# CONFIG_PATA_SCH is not set
# CONFIG_PATA_SERVERWORKS is not set
# CONFIG_PATA_SIL680 is not set
# CONFIG_PATA_SIS is not set
# CONFIG_PATA_TOSHIBA is not set
# CONFIG_PATA_TRIFLEX is not set
# CONFIG_PATA_VIA is not set
# CONFIG_PATA_WINBOND is not set

#
# PIO-only SFF controllers
#
# CONFIG_PATA_CMD640_PCI is not set
# CONFIG_PATA_MPIIX is not set
# CONFIG_PATA_NS87410 is not set
# CONFIG_PATA_OPTI is not set
# CONFIG_PATA_PLATFORM is not set
# CONFIG_PATA_RZ1000 is not set

#
# Generic fallback / legacy drivers
#
# CONFIG_ATA_GENERIC is not set
# CONFIG_PATA_LEGACY is not set
# CONFIG_MD is not set
# CONFIG_TARGET_CORE is not set
# CONFIG_FUSION is not set

#
# IEEE 1394 (FireWire) support
#
# CONFIG_FIREWIRE is not set
# CONFIG_FIREWIRE_NOSY is not set
# CONFIG_MACINTOSH_DRIVERS is not set
CONFIG_NETDEVICES=y
CONFIG_NET_CORE=y
# CONFIG_BONDING is not set
# CONFIG_DUMMY is not set
# CONFIG_EQUALIZER is not set
# CONFIG_NET_FC is not set
# CONFIG_NET_TEAM is not set
# CONFIG_MACVLAN is not set
# CONFIG_VXLAN is not set
# CONFIG_MACSEC is not set
# CONFIG_NETCONSOLE is not set
# CONFIG_TUN is not set
# CONFIG_TUN_VNET_CROSS_LE is not set
# CONFIG_VETH is not set
CONFIG_VIRTIO_NET=y
# CONFIG_NLMON is not set
# CONFIG_ARCNET is not set

#
# CAIF transport drivers
#

#
# Distributed Switch Architecture drivers
#
# CONFIG_ETHERNET is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_MDIO_DEVICE is not set
# CONFIG_PHYLIB is not set
# CONFIG_PPP is not set
# CONFIG_SLIP is not set

#
# Host-side USB support is needed for USB Network Adapter support
#
# CONFIG_WLAN is not set

#
# Enable WiMAX (Networking options) to see the WiMAX drivers
#
# CONFIG_WAN is not set
# CONFIG_VMXNET3 is not set
# CONFIG_NETDEVSIM is not set
CONFIG_NET_FAILOVER=y
# CONFIG_ISDN is not set
# CONFIG_NVM is not set

#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
# CONFIG_INPUT_POLLDEV is not set
# CONFIG_INPUT_SPARSEKMAP is not set
# CONFIG_INPUT_MATRIXKMAP is not set

#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_EVDEV is not set
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_OPENCORES is not set
# CONFIG_KEYBOARD_SAMSUNG is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_XTKBD is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
# CONFIG_INPUT_TOUCHSCREEN is not set
# CONFIG_INPUT_MISC is not set
# CONFIG_RMI4_CORE is not set

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
CONFIG_SERIO_I8042=y
CONFIG_SERIO_SERPORT=y
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
# CONFIG_SERIO_ALTERA_PS2 is not set
# CONFIG_SERIO_PS2MULT is not set
# CONFIG_SERIO_ARC_PS2 is not set
# CONFIG_USERIO is not set
# CONFIG_GAMEPORT is not set

#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
# CONFIG_CONSOLE_TRANSLATIONS is not set
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_UNIX98_PTYS=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_NOZOMI is not set
# CONFIG_N_GSM is not set
# CONFIG_TRACE_SINK is not set
# CONFIG_DEVMEM is not set
# CONFIG_DEVKMEM is not set

#
# Serial drivers
#
CONFIG_SERIAL_EARLYCON=y
CONFIG_SERIAL_8250=y
# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
# CONFIG_SERIAL_8250_FINTEK is not set
CONFIG_SERIAL_8250_CONSOLE=y
# CONFIG_SERIAL_8250_PCI is not set
CONFIG_SERIAL_8250_NR_UARTS=32
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
# CONFIG_SERIAL_8250_EXTENDED is not set
# CONFIG_SERIAL_8250_DW is not set
# CONFIG_SERIAL_8250_RT288X is not set
# CONFIG_SERIAL_8250_LPSS is not set
# CONFIG_SERIAL_8250_MID is not set
# CONFIG_SERIAL_8250_MOXA is not set

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_UARTLITE is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_JSM is not set
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_RP2 is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_DEV_BUS is not set
# CONFIG_TTY_PRINTK is not set
# CONFIG_VIRTIO_CONSOLE is not set
# CONFIG_IPMI_HANDLER is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_NVRAM is not set
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
# CONFIG_MWAVE is not set
# CONFIG_RAW_DRIVER is not set
# CONFIG_HANGCHECK_TIMER is not set
# CONFIG_TCG_TPM is not set
# CONFIG_TELCLOCK is not set
# CONFIG_DEVPORT is not set
# CONFIG_XILLYBUS is not set

#
# I2C support
#
# CONFIG_I2C is not set
# CONFIG_SPI is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set
# CONFIG_PPS is not set

#
# PTP clock support
#
# CONFIG_PTP_1588_CLOCK is not set

#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
# CONFIG_PINCTRL is not set
# CONFIG_GPIOLIB is not set
# CONFIG_W1 is not set
# CONFIG_POWER_AVS is not set
# CONFIG_POWER_RESET is not set
# CONFIG_POWER_SUPPLY is not set
# CONFIG_HWMON is not set
# CONFIG_THERMAL is not set
# CONFIG_WATCHDOG is not set
CONFIG_SSB_POSSIBLE=y
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y
# CONFIG_BCMA is not set

#
# Multifunction device drivers
#
# CONFIG_MFD_CROS_EC is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_MFD_INTEL_QUARK_I2C_GPIO is not set
# CONFIG_LPC_ICH is not set
# CONFIG_LPC_SCH is not set
# CONFIG_MFD_INTEL_LPSS_PCI is not set
# CONFIG_MFD_JANZ_CMODIO is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_RDC321X is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_ABX500_CORE is not set
# CONFIG_MFD_SYSCON is not set
# CONFIG_MFD_TI_AM335X_TSCADC is not set
# CONFIG_MFD_VX855 is not set
# CONFIG_REGULATOR is not set
# CONFIG_RC_CORE is not set
# CONFIG_MEDIA_SUPPORT is not set

#
# Graphics support
#
# CONFIG_AGP is not set
# CONFIG_VGA_ARB is not set
# CONFIG_DRM is not set

#
# ACP (Audio CoProcessor) Configuration
#

#
# AMD Library routines
#

#
# Frame buffer Devices
#
# CONFIG_FB is not set
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set

#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
CONFIG_VGACON_SOFT_SCROLLBACK=y
CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64
# CONFIG_VGACON_SOFT_SCROLLBACK_PERSISTENT_ENABLE_BY_DEFAULT is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_DUMMY_CONSOLE_COLUMNS=80
CONFIG_DUMMY_CONSOLE_ROWS=25
# CONFIG_SOUND is not set

#
# HID support
#
# CONFIG_HID is not set

#
# Intel ISH HID support
#
# CONFIG_INTEL_ISH_HID is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
# CONFIG_USB_SUPPORT is not set
# CONFIG_UWB is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_INFINIBAND is not set
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_RTC_LIB=y
CONFIG_RTC_MC146818_LIB=y
# CONFIG_RTC_CLASS is not set
# CONFIG_DMADEVICES is not set

#
# DMABUF options
#
# CONFIG_SYNC_FILE is not set
# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set
CONFIG_VIRT_DRIVERS=y
# CONFIG_VBOXGUEST is not set
CONFIG_VIRTIO=y
CONFIG_VIRTIO_MENU=y
CONFIG_VIRTIO_PCI=y
# CONFIG_VIRTIO_PCI_LEGACY is not set
# CONFIG_VIRTIO_BALLOON is not set
# CONFIG_VIRTIO_INPUT is not set
# CONFIG_VIRTIO_MMIO is not set

#
# Microsoft Hyper-V guest support
#
# CONFIG_STAGING is not set
# CONFIG_X86_PLATFORM_DEVICES is not set
CONFIG_PMC_ATOM=y
# CONFIG_CHROME_PLATFORMS is not set
# CONFIG_MELLANOX_PLATFORM is not set
CONFIG_CLKDEV_LOOKUP=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_COMMON_CLK=y

#
# Common Clock Framework
#
# CONFIG_HWSPINLOCK is not set

#
# Clock Source drivers
#
CONFIG_CLKEVT_I8253=y
CONFIG_I8253_LOCK=y
CONFIG_CLKBLD_I8253=y
# CONFIG_MAILBOX is not set
# CONFIG_IOMMU_SUPPORT is not set

#
# Remoteproc drivers
#
# CONFIG_REMOTEPROC is not set

#
# Rpmsg drivers
#
# CONFIG_RPMSG_VIRTIO is not set
# CONFIG_SOUNDWIRE is not set

#
# SOC (System On Chip) specific Drivers
#

#
# Amlogic SoC drivers
#

#
# Broadcom SoC drivers
#

#
# i.MX SoC drivers
#

#
# Qualcomm SoC drivers
#
# CONFIG_SOC_TI is not set

#
# Xilinx SoC drivers
#
# CONFIG_XILINX_VCU is not set
# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
# CONFIG_NTB is not set
# CONFIG_VME_BUS is not set
# CONFIG_PWM is not set

#
# IRQ chip support
#
CONFIG_ARM_GIC_MAX_NR=1
# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set
# CONFIG_FMC is not set

#
# PHY Subsystem
#
# CONFIG_GENERIC_PHY is not set
# CONFIG_BCM_KONA_USB2_PHY is not set
# CONFIG_PHY_PXA_28NM_HSIC is not set
# CONFIG_PHY_PXA_28NM_USB2 is not set
# CONFIG_POWERCAP is not set
# CONFIG_MCB is not set

#
# Performance monitor support
#
# CONFIG_RAS is not set
# CONFIG_THUNDERBOLT is not set

#
# Android
#
# CONFIG_ANDROID is not set
# CONFIG_LIBNVDIMM is not set
# CONFIG_DAX is not set
# CONFIG_NVMEM is not set

#
# HW tracing support
#
# CONFIG_STM is not set
# CONFIG_INTEL_TH is not set
# CONFIG_FPGA is not set
# CONFIG_SIOX is not set
# CONFIG_SLIMBUS is not set

#
# Firmware Drivers
#
# CONFIG_EDD is not set
# CONFIG_FIRMWARE_MEMMAP is not set
# CONFIG_DELL_RBU is not set
# CONFIG_DCDBAS is not set
# CONFIG_FW_CFG_SYSFS is not set
# CONFIG_GOOGLE_FIRMWARE is not set

#
# Tegra firmware driver
#

#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
CONFIG_FS_IOMAP=y
# CONFIG_EXT2_FS is not set
# CONFIG_EXT3_FS is not set
CONFIG_EXT4_FS=y
# CONFIG_EXT4_USE_FOR_EXT2 is not set
# CONFIG_EXT4_FS_POSIX_ACL is not set
# CONFIG_EXT4_FS_SECURITY is not set
# CONFIG_EXT4_ENCRYPTION is not set
# CONFIG_EXT4_DEBUG is not set
CONFIG_JBD2=y
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
# CONFIG_F2FS_FS is not set
# CONFIG_FS_DAX is not set
CONFIG_EXPORTFS=y
# CONFIG_EXPORTFS_BLOCK_OPS is not set
CONFIG_FILE_LOCKING=y
# CONFIG_MANDATORY_FILE_LOCKING is not set
# CONFIG_FS_ENCRYPTION is not set
CONFIG_FSNOTIFY=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY_USER=y
# CONFIG_FANOTIFY is not set
# CONFIG_QUOTA is not set
CONFIG_AUTOFS4_FS=y
CONFIG_AUTOFS_FS=y
# CONFIG_FUSE_FS is not set
# CONFIG_OVERLAY_FS is not set

#
# Caches
#
# CONFIG_FSCACHE is not set

#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
# CONFIG_UDF_FS is not set

#
# DOS/FAT/NT Filesystems
#
# CONFIG_MSDOS_FS is not set
# CONFIG_VFAT_FS is not set
# CONFIG_NTFS_FS is not set

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
# CONFIG_PROC_KCORE is not set
# CONFIG_PROC_VMCORE is not set
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
# CONFIG_PROC_CHILDREN is not set
CONFIG_KERNFS=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
# CONFIG_TMPFS_POSIX_ACL is not set
# CONFIG_TMPFS_XATTR is not set
# CONFIG_HUGETLBFS is not set
CONFIG_MEMFD_CREATE=y
# CONFIG_CONFIGFS_FS is not set
# CONFIG_MISC_FILESYSTEMS is not set
# CONFIG_NETWORK_FILESYSTEMS is not set
# CONFIG_NLS is not set

#
# Kernel hacking
#
CONFIG_TRACE_IRQFLAGS_SUPPORT=y

#
# printk and dmesg options
#
CONFIG_PRINTK_TIME=y
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_DYNAMIC_DEBUG is not set

#
# Compile-time checks and compiler options
#
# CONFIG_DEBUG_INFO is not set
# CONFIG_ENABLE_WARN_DEPRECATED is not set
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_FRAME_WARN=2048
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_READABLE_ASM is not set
# CONFIG_UNUSED_SYMBOLS is not set
# CONFIG_PAGE_OWNER is not set
CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_SECTION_MISMATCH is not set
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
CONFIG_STACK_VALIDATION=y
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
CONFIG_MAGIC_SYSRQ=y
CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
CONFIG_MAGIC_SYSRQ_SERIAL=y
CONFIG_DEBUG_KERNEL=y

#
# Memory Debugging
#
# CONFIG_PAGE_EXTENSION is not set
# CONFIG_DEBUG_PAGEALLOC is not set
# CONFIG_PAGE_POISONING is not set
# CONFIG_DEBUG_RODATA_TEST is not set
# CONFIG_DEBUG_OBJECTS is not set
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_SLUB_STATS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
CONFIG_DEBUG_STACK_USAGE=y
# CONFIG_DEBUG_VM is not set
CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
# CONFIG_DEBUG_VIRTUAL is not set
# CONFIG_DEBUG_MEMORY_INIT is not set
# CONFIG_DEBUG_PER_CPU_MAPS is not set
CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
CONFIG_DEBUG_STACKOVERFLOW=y
CONFIG_HAVE_ARCH_KASAN=y
# CONFIG_KASAN is not set
CONFIG_ARCH_HAS_KCOV=y
CONFIG_CC_HAS_SANCOV_TRACE_PC=y
# CONFIG_KCOV is not set
# CONFIG_DEBUG_SHIRQ is not set

#
# Debug Lockups and Hangs
#
CONFIG_LOCKUP_DETECTOR=y
CONFIG_SOFTLOCKUP_DETECTOR=y
# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
CONFIG_HARDLOCKUP_DETECTOR_PERF=y
CONFIG_HARDLOCKUP_CHECK_TIMESTAMP=y
CONFIG_HARDLOCKUP_DETECTOR=y
# CONFIG_BOOTPARAM_HARDLOCKUP_PANIC is not set
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC_VALUE=0
CONFIG_DETECT_HUNG_TASK=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0
CONFIG_WQ_WATCHDOG=y
# CONFIG_PANIC_ON_OOPS is not set
CONFIG_PANIC_ON_OOPS_VALUE=0
CONFIG_PANIC_TIMEOUT=0
# CONFIG_SCHED_DEBUG is not set
CONFIG_SCHED_INFO=y
CONFIG_SCHEDSTATS=y
# CONFIG_SCHED_STACK_END_CHECK is not set
# CONFIG_DEBUG_TIMEKEEPING is not set
CONFIG_DEBUG_PREEMPT=y

#
# Lock Debugging (spinlocks, mutexes, etc...)
#
CONFIG_LOCK_DEBUGGING_SUPPORT=y
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
# CONFIG_DEBUG_RWSEMS is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_DEBUG_ATOMIC_SLEEP is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_LOCK_TORTURE_TEST is not set
# CONFIG_WW_MUTEX_SELFTEST is not set
CONFIG_STACKTRACE=y
# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_PI_LIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_DEBUG_CREDENTIALS is not set

#
# RCU Debugging
#
# CONFIG_RCU_PERF_TEST is not set
# CONFIG_RCU_TORTURE_TEST is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=21
# CONFIG_RCU_TRACE is not set
# CONFIG_RCU_EQS_DEBUG is not set
# CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
# CONFIG_NOTIFIER_ERROR_INJECTION is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_LATENCYTOP is not set
CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_FENTRY=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_TRACING_SUPPORT=y
# CONFIG_FTRACE is not set
CONFIG_PROVIDE_OHCI1394_DMA_INIT=y
# CONFIG_DMA_API_DEBUG is not set
# CONFIG_RUNTIME_TESTING_MENU is not set
# CONFIG_MEMTEST is not set
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
# CONFIG_UBSAN is not set
CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y
CONFIG_EARLY_PRINTK_USB=y
CONFIG_X86_VERBOSE_BOOTUP=y
CONFIG_EARLY_PRINTK=y
CONFIG_EARLY_PRINTK_DBGP=y
# CONFIG_EARLY_PRINTK_USB_XDBC is not set
# CONFIG_X86_PTDUMP is not set
# CONFIG_DEBUG_WX is not set
CONFIG_DOUBLEFAULT=y
# CONFIG_DEBUG_TLBFLUSH is not set
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
CONFIG_IO_DELAY_TYPE_0X80=0
CONFIG_IO_DELAY_TYPE_0XED=1
CONFIG_IO_DELAY_TYPE_UDELAY=2
CONFIG_IO_DELAY_TYPE_NONE=3
CONFIG_IO_DELAY_0X80=y
# CONFIG_IO_DELAY_0XED is not set
# CONFIG_IO_DELAY_UDELAY is not set
# CONFIG_IO_DELAY_NONE is not set
CONFIG_DEFAULT_IO_DELAY_TYPE=0
CONFIG_DEBUG_BOOT_PARAMS=y
# CONFIG_CPA_DEBUG is not set
CONFIG_OPTIMIZE_INLINING=y
# CONFIG_DEBUG_ENTRY is not set
# CONFIG_DEBUG_NMI_SELFTEST is not set
CONFIG_X86_DEBUG_FPU=y
# CONFIG_PUNIT_ATOM_DEBUG is not set
CONFIG_UNWINDER_ORC=y
# CONFIG_UNWINDER_FRAME_POINTER is not set
# CONFIG_UNWINDER_GUESS is not set

#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
# CONFIG_PAGE_TABLE_ISOLATION is not set
CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
# CONFIG_HARDENED_USERCOPY is not set
# CONFIG_FORTIFY_SOURCE is not set
# CONFIG_STATIC_USERMODEHELPER is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_DEFAULT_SECURITY=""
CONFIG_CRYPTO=y

#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_BLKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_AKCIPHER2=y
CONFIG_CRYPTO_KPP2=y
CONFIG_CRYPTO_ACOMP2=y
# CONFIG_CRYPTO_RSA is not set
# CONFIG_CRYPTO_DH is not set
# CONFIG_CRYPTO_ECDH is not set
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
# CONFIG_CRYPTO_USER is not set
CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
# CONFIG_CRYPTO_GF128MUL is not set
CONFIG_CRYPTO_NULL=y
CONFIG_CRYPTO_NULL2=y
# CONFIG_CRYPTO_PCRYPT is not set
CONFIG_CRYPTO_WORKQUEUE=y
# CONFIG_CRYPTO_CRYPTD is not set
# CONFIG_CRYPTO_MCRYPTD is not set
# CONFIG_CRYPTO_AUTHENC is not set

#
# Authenticated Encryption with Associated Data
#
# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_GCM is not set
# CONFIG_CRYPTO_CHACHA20POLY1305 is not set
# CONFIG_CRYPTO_AEGIS128 is not set
# CONFIG_CRYPTO_AEGIS128L is not set
# CONFIG_CRYPTO_AEGIS256 is not set
# CONFIG_CRYPTO_AEGIS128_AESNI_SSE2 is not set
# CONFIG_CRYPTO_AEGIS128L_AESNI_SSE2 is not set
# CONFIG_CRYPTO_AEGIS256_AESNI_SSE2 is not set
# CONFIG_CRYPTO_MORUS640 is not set
# CONFIG_CRYPTO_MORUS640_SSE2 is not set
# CONFIG_CRYPTO_MORUS1280 is not set
# CONFIG_CRYPTO_MORUS1280_SSE2 is not set
# CONFIG_CRYPTO_MORUS1280_AVX2 is not set
# CONFIG_CRYPTO_SEQIV is not set
# CONFIG_CRYPTO_ECHAINIV is not set

#
# Block modes
#
# CONFIG_CRYPTO_CBC is not set
# CONFIG_CRYPTO_CFB is not set
# CONFIG_CRYPTO_CTR is not set
# CONFIG_CRYPTO_CTS is not set
# CONFIG_CRYPTO_ECB is not set
# CONFIG_CRYPTO_LRW is not set
# CONFIG_CRYPTO_PCBC is not set
# CONFIG_CRYPTO_XTS is not set
# CONFIG_CRYPTO_KEYWRAP is not set

#
# Hash modes
#
# CONFIG_CRYPTO_CMAC is not set
# CONFIG_CRYPTO_HMAC is not set
# CONFIG_CRYPTO_XCBC is not set
# CONFIG_CRYPTO_VMAC is not set

#
# Digest
#
CONFIG_CRYPTO_CRC32C=y
# CONFIG_CRYPTO_CRC32C_INTEL is not set
# CONFIG_CRYPTO_CRC32 is not set
# CONFIG_CRYPTO_CRC32_PCLMUL is not set
# CONFIG_CRYPTO_CRCT10DIF is not set
# CONFIG_CRYPTO_GHASH is not set
# CONFIG_CRYPTO_POLY1305 is not set
# CONFIG_CRYPTO_POLY1305_X86_64 is not set
# CONFIG_CRYPTO_MD4 is not set
# CONFIG_CRYPTO_MD5 is not set
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_RMD128 is not set
# CONFIG_CRYPTO_RMD160 is not set
# CONFIG_CRYPTO_RMD256 is not set
# CONFIG_CRYPTO_RMD320 is not set
# CONFIG_CRYPTO_SHA1 is not set
# CONFIG_CRYPTO_SHA1_SSSE3 is not set
# CONFIG_CRYPTO_SHA256_SSSE3 is not set
# CONFIG_CRYPTO_SHA512_SSSE3 is not set
# CONFIG_CRYPTO_SHA1_MB is not set
# CONFIG_CRYPTO_SHA256_MB is not set
# CONFIG_CRYPTO_SHA512_MB is not set
# CONFIG_CRYPTO_SHA256 is not set
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_SHA3 is not set
# CONFIG_CRYPTO_SM3 is not set
# CONFIG_CRYPTO_TGR192 is not set
# CONFIG_CRYPTO_WP512 is not set
# CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL is not set

#
# Ciphers
#
CONFIG_CRYPTO_AES=y
# CONFIG_CRYPTO_AES_TI is not set
# CONFIG_CRYPTO_AES_X86_64 is not set
# CONFIG_CRYPTO_AES_NI_INTEL is not set
# CONFIG_CRYPTO_ANUBIS is not set
# CONFIG_CRYPTO_ARC4 is not set
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_BLOWFISH_X86_64 is not set
# CONFIG_CRYPTO_CAMELLIA is not set
# CONFIG_CRYPTO_CAMELLIA_X86_64 is not set
# CONFIG_CRYPTO_CAMELLIA_AESNI_AVX_X86_64 is not set
# CONFIG_CRYPTO_CAMELLIA_AESNI_AVX2_X86_64 is not set
# CONFIG_CRYPTO_CAST5 is not set
# CONFIG_CRYPTO_CAST5_AVX_X86_64 is not set
# CONFIG_CRYPTO_CAST6 is not set
# CONFIG_CRYPTO_CAST6_AVX_X86_64 is not set
# CONFIG_CRYPTO_DES is not set
# CONFIG_CRYPTO_DES3_EDE_X86_64 is not set
# CONFIG_CRYPTO_FCRYPT is not set
# CONFIG_CRYPTO_KHAZAD is not set
# CONFIG_CRYPTO_SALSA20 is not set
# CONFIG_CRYPTO_CHACHA20 is not set
# CONFIG_CRYPTO_CHACHA20_X86_64 is not set
# CONFIG_CRYPTO_SEED is not set
# CONFIG_CRYPTO_SERPENT is not set
# CONFIG_CRYPTO_SERPENT_SSE2_X86_64 is not set
# CONFIG_CRYPTO_SERPENT_AVX_X86_64 is not set
# CONFIG_CRYPTO_SERPENT_AVX2_X86_64 is not set
# CONFIG_CRYPTO_SM4 is not set
# CONFIG_CRYPTO_SPECK is not set
# CONFIG_CRYPTO_TEA is not set
# CONFIG_CRYPTO_TWOFISH is not set
# CONFIG_CRYPTO_TWOFISH_X86_64 is not set
# CONFIG_CRYPTO_TWOFISH_X86_64_3WAY is not set
# CONFIG_CRYPTO_TWOFISH_AVX_X86_64 is not set

#
# Compression
#
# CONFIG_CRYPTO_DEFLATE is not set
# CONFIG_CRYPTO_LZO is not set
# CONFIG_CRYPTO_842 is not set
# CONFIG_CRYPTO_LZ4 is not set
# CONFIG_CRYPTO_LZ4HC is not set
# CONFIG_CRYPTO_ZSTD is not set

#
# Random Number Generation
#
# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_DRBG_MENU is not set
# CONFIG_CRYPTO_JITTERENTROPY is not set
# CONFIG_CRYPTO_USER_API_HASH is not set
# CONFIG_CRYPTO_USER_API_SKCIPHER is not set
# CONFIG_CRYPTO_USER_API_RNG is not set
# CONFIG_CRYPTO_USER_API_AEAD is not set
# CONFIG_CRYPTO_HW is not set

#
# Certificates for signature checking
#
CONFIG_HAVE_KVM=y
# CONFIG_VIRTUALIZATION is not set

#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_RATIONAL=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_NET_UTILS=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_IOMAP=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
# CONFIG_CRC_CCITT is not set
CONFIG_CRC16=y
# CONFIG_CRC_T10DIF is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC4 is not set
# CONFIG_CRC7 is not set
# CONFIG_LIBCRC32C is not set
# CONFIG_CRC8 is not set
# CONFIG_RANDOM32_SELFTEST is not set
CONFIG_ZLIB_INFLATE=y
# CONFIG_XZ_DEC is not set
CONFIG_DECOMPRESS_GZIP=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAS_DMA=y
CONFIG_SGL_ALLOC=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
CONFIG_DMA_DIRECT_OPS=y
CONFIG_SWIOTLB=y
CONFIG_CPU_RMAP=y
CONFIG_DQL=y
CONFIG_GLOB=y
# CONFIG_GLOB_SELFTEST is not set
CONFIG_NLATTR=y
# CONFIG_CORDIC is not set
# CONFIG_DDR is not set
# CONFIG_IRQ_POLL is not set
CONFIG_SG_POOL=y
CONFIG_ARCH_HAS_SG_CHAIN=y
CONFIG_ARCH_HAS_PMEM_API=y
CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE=y
CONFIG_ARCH_HAS_UACCESS_MCSAFE=y
CONFIG_SBITMAP=y
# CONFIG_STRING_SELFTEST is not set

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: Commit "new primitive: discard_new_inode()" introduces a problem
  2018-08-01 15:43   ` Kirill Tkhai
@ 2018-08-01 16:11     ` Al Viro
  2018-08-01 16:16       ` Al Viro
  0 siblings, 1 reply; 11+ messages in thread
From: Al Viro @ 2018-08-01 16:11 UTC (permalink / raw)
  To: Kirill Tkhai; +Cc: linux-fsdevel@vger.kernel.org, LKML

On Wed, Aug 01, 2018 at 06:43:56PM +0300, Kirill Tkhai wrote:
> #git status
> HEAD detached at 22dc9a168272

Wait a sec - just that commit?  With discard_new_inode() not even
used anywhere?  Then any of those -ENOMEM is disguised ERR_PTR(-ESTALE)
from find_inode()/find_inode_fast(), i.e. an inode found by
iget5_locked() (your /etc is on ext4) with I_CREATING still set.
And that is set only by insert_inode_locked()/insert_inode_locked4(),
and only until unlock_new_inode().

Could you slap WARN_ON(1) before these return ERR_PTR(-ESTALE) in
find_inode{,_fast}() and see if that's what's getting triggered?

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: Commit "new primitive: discard_new_inode()" introduces a problem
  2018-08-01 16:11     ` Al Viro
@ 2018-08-01 16:16       ` Al Viro
  2018-08-01 16:19         ` Kirill Tkhai
  2018-08-01 16:27         ` Al Viro
  0 siblings, 2 replies; 11+ messages in thread
From: Al Viro @ 2018-08-01 16:16 UTC (permalink / raw)
  To: Kirill Tkhai; +Cc: linux-fsdevel@vger.kernel.org, LKML

On Wed, Aug 01, 2018 at 05:11:51PM +0100, Al Viro wrote:
> On Wed, Aug 01, 2018 at 06:43:56PM +0300, Kirill Tkhai wrote:
> > #git status
> > HEAD detached at 22dc9a168272
> 
> Wait a sec - just that commit?  With discard_new_inode() not even
> used anywhere?  Then any of those -ENOMEM is disguised ERR_PTR(-ESTALE)
> from find_inode()/find_inode_fast(), i.e. an inode found by
> iget5_locked() (your /etc is on ext4) with I_CREATING still set.

iget_locked(), that is.

> And that is set only by insert_inode_locked()/insert_inode_locked4(),
> and only until unlock_new_inode().
> 
> Could you slap WARN_ON(1) before these return ERR_PTR(-ESTALE) in
> find_inode{,_fast}() and see if that's what's getting triggered?

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: Commit "new primitive: discard_new_inode()" introduces a problem
  2018-08-01 16:16       ` Al Viro
@ 2018-08-01 16:19         ` Kirill Tkhai
  2018-08-01 16:34           ` Al Viro
  2018-08-01 16:27         ` Al Viro
  1 sibling, 1 reply; 11+ messages in thread
From: Kirill Tkhai @ 2018-08-01 16:19 UTC (permalink / raw)
  To: Al Viro; +Cc: linux-fsdevel@vger.kernel.org, LKML

On 01.08.2018 19:16, Al Viro wrote:
> On Wed, Aug 01, 2018 at 05:11:51PM +0100, Al Viro wrote:
>> On Wed, Aug 01, 2018 at 06:43:56PM +0300, Kirill Tkhai wrote:
>>> #git status
>>> HEAD detached at 22dc9a168272
>>
>> Wait a sec - just that commit?  With discard_new_inode() not even
>> used anywhere?  Then any of those -ENOMEM is disguised ERR_PTR(-ESTALE)
>> from find_inode()/find_inode_fast(), i.e. an inode found by
>> iget5_locked() (your /etc is on ext4) with I_CREATING still set.
> 
> iget_locked(), that is.

[   32.266377] WARNING: CPU: 0 PID: 2301 at fs/inode.c:841 find_inode_fast.isra.24+0x90/0xa0
[   32.268509] CPU: 0 PID: 2301 Comm: grep Not tainted 4.18.0-rc1+ #32
[   32.269209] RIP: 0010:find_inode_fast.isra.24+0x90/0xa0
[   32.269789] Code: 48 89 d8 5b 5d 41 5c 41 5d 41 5e c3 f6 c4 80 75 11 f0 ff 83 30 01 00 00 4c 89 f7 e8 4a 7c 24 00 eb de 4c 89 f7 e8 40 7c 24 00 <0f> 0b 48 c7 c3 8c ff ff ff eb cb 0f 1f 44 00 00 41 54 49 c7 c4 30 
[   32.271876] RSP: 0018:ffffc9000113fb80 EFLAGS: 00010282
[   32.272448] RAX: 0000000080000001 RBX: ffff88013aff9088 RCX: 0000000000000002
[   32.273231] RDX: 0000000080000002 RSI: ffff88013fec2350 RDI: 00000000ffffffff
[   32.274019] RBP: 00000000000405fb R08: ffff88013950c400 R09: ffff88013ac43ea0
[   32.274796] R10: 0000000000000014 R11: 0000000000000014 R12: ffff88013b199000
[   32.275579] R13: ffff88013fec2350 R14: ffff88013aff90f8 R15: ffff880135cb5180
[   32.276355] FS:  0000000000000000(0000) GS:ffff88013fc00000(0000) knlGS:0000000000000000
[   32.277189] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.277786] CR2: 00007f6f73e26018 CR3: 000000013a98f000 CR4: 00000000000006b0
[   32.278513] Call Trace:
[   32.278777]  ? iget_locked+0x69/0x190
[   32.279162]  ? ext4_iget+0x3f/0xc00
[   32.279443]  ? preempt_count_add+0x44/0x90
[   32.279733]  ? d_alloc_parallel+0x358/0x4f0
[   32.280039]  ? ext4_lookup+0xd6/0x200
[   32.280282]  ? path_openat+0x9d6/0x1400
[   32.280537]  ? do_filp_open+0x8e/0x100
[   32.280842]  ? __lru_cache_add+0x6e/0x90
[   32.281300]  ? kmem_cache_alloc+0x22/0x120
[   32.281544]  ? do_sys_open+0x181/0x210
[   32.281789]  ? do_syscall_64+0x56/0x2f0
[   32.282046]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   32.282351] ---[ end trace 109b3dd4fd5e6451 ]---
[   32.282657] WARNING: CPU: 3 PID: 2300 at fs/inode.c:841 find_inode_fast.isra.24+0x90/0xa0
[   32.283126] CPU: 3 PID: 2300 Comm: parallels-serve Tainted: G        W         4.18.0-rc1+ #32
[   32.283595] RIP: 0010:find_inode_fast.isra.24+0x90/0xa0
[   32.283881] Code: 48 89 d8 5b 5d 41 5c 41 5d 41 5e c3 f6 c4 80 75 11 f0 ff 83 30 01 00 00 4c 89 f7 e8 4a 7c 24 00 eb de 4c 89 f7 e8 40 7c 24 00 <0f> 0b 48 c7 c3 8c ff ff ff eb cb 0f 1f 44 00 00 41 54 49 c7 c4 30 
[   32.285066] RSP: 0018:ffffc90001137b80 EFLAGS: 00010282
[   32.285397] RAX: 0000000080000001 RBX: ffff88013aff9088 RCX: 0000000000000002
[   32.285829] RDX: 0000000080000002 RSI: ffff88013fec2350 RDI: 00000000ffffffff
[   32.286218] RBP: 00000000000405fb R08: ffff88013950c400 R09: ffff88013ac43ea0
[   32.286601] R10: 0000000000000014 R11: 0000000000000014 R12: ffff88013b199000
[   32.287035] R13: ffff88013fec2350 R14: ffff88013aff90f8 R15: ffff880135cb5180
[   32.287430] FS:  0000000000000000(0000) GS:ffff88013fd80000(0000) knlGS:0000000000000000
[   32.287872] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.288202] CR2: 00007ffd0f3e4f68 CR3: 0000000139d59000 CR4: 00000000000006a0
[   32.288650] Call Trace:
[   32.288871]  ? iget_locked+0x69/0x190
[   32.289106]  ? ext4_iget+0x3f/0xc00
[   32.289333]  ? preempt_count_add+0x44/0x90
[   32.289595]  ? d_alloc_parallel+0x358/0x4f0
[   32.289858]  ? ext4_lookup+0xd6/0x200
[   32.290059]  ? path_openat+0x9d6/0x1400
[   32.290268]  ? __mod_node_page_state+0x64/0xa0
[   32.290510]  ? do_filp_open+0x8e/0x100
[   32.290721]  ? __lru_cache_add+0x6e/0x90
[   32.290968]  ? _raw_spin_unlock+0xd/0x20
[   32.291218]  ? __handle_mm_fault+0x6f2/0xbf0
[   32.291473]  ? do_sys_open+0x181/0x210
[   32.291684]  ? do_syscall_64+0x56/0x2f0
[   32.291932]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   32.292239] ---[ end trace 109b3dd4fd5e6452 ]---
[   32.314195] WARNING: CPU: 1 PID: 2303 at fs/inode.c:841 find_inode_fast.isra.24+0x90/0xa0
[   32.314866] CPU: 1 PID: 2303 Comm: uname Tainted: G        W         4.18.0-rc1+ #32
[   32.315479] RIP: 0010:find_inode_fast.isra.24+0x90/0xa0
[   32.315889] Code: 48 89 d8 5b 5d 41 5c 41 5d 41 5e c3 f6 c4 80 75 11 f0 ff 83 30 01 00 00 4c 89 f7 e8 4a 7c 24 00 eb de 4c 89 f7 e8 40 7c 24 00 <0f> 0b 48 c7 c3 8c ff ff ff eb cb 0f 1f 44 00 00 41 54 49 c7 c4 30 
[   32.317376] RSP: 0018:ffffc900010ffb80 EFLAGS: 00010282
[   32.317797] RAX: 0000000080000001 RBX: ffff88013aff9088 RCX: 0000000000000002
[   32.318374] RDX: 0000000080000002 RSI: ffff88013fec2350 RDI: 00000000ffffffff
[   32.318979] RBP: 00000000000405fb R08: ffff88013950c400 R09: ffff88013ac43ea0
[   32.319529] R10: 0000000000000014 R11: 0000000000000014 R12: ffff88013b199000
[   32.320089] R13: ffff88013fec2350 R14: ffff88013aff90f8 R15: ffff880135cb5180
[   32.320630] FS:  0000000000000000(0000) GS:ffff88013fc80000(0000) knlGS:0000000000000000
[   32.321258] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.321697] CR2: 00007ffc86055fe4 CR3: 000000013b2a4000 CR4: 00000000000006a0
[   32.322254] Call Trace:
[   32.322450]  ? iget_locked+0x69/0x190
[   32.322739]  ? ext4_iget+0x3f/0xc00
[   32.323015]  ? preempt_count_add+0x44/0x90
[   32.323334]  ? d_alloc_parallel+0x358/0x4f0
[   32.323655]  ? ext4_lookup+0xd6/0x200
[   32.323943]  ? path_openat+0x9d6/0x1400
[   32.324248]  ? do_filp_open+0x8e/0x100
[   32.324541]  ? __lru_cache_add+0x6e/0x90
[   32.324833]  ? _raw_spin_unlock+0xd/0x20
[   32.325088]  ? __handle_mm_fault+0x6f2/0xbf0
[   32.325335]  ? do_sys_open+0x181/0x210
[   32.325551]  ? do_syscall_64+0x56/0x2f0
[   32.325778]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   32.326100] ---[ end trace 109b3dd4fd5e6453 ]---
[   32.328654] WARNING: CPU: 3 PID: 2304 at fs/inode.c:841 find_inode_fast.isra.24+0x90/0xa0
[   32.329183] CPU: 3 PID: 2304 Comm: grep Tainted: G        W         4.18.0-rc1+ #32
[   32.329600] RIP: 0010:find_inode_fast.isra.24+0x90/0xa0
[   32.329887] Code: 48 89 d8 5b 5d 41 5c 41 5d 41 5e c3 f6 c4 80 75 11 f0 ff 83 30 01 00 00 4c 89 f7 e8 4a 7c 24 00 eb de 4c 89 f7 e8 40 7c 24 00 <0f> 0b 48 c7 c3 8c ff ff ff eb cb 0f 1f 44 00 00 41 54 49 c7 c4 30 
[   32.330947] RSP: 0018:ffffc900010ffb80 EFLAGS: 00010282
[   32.331246] RAX: 0000000080000001 RBX: ffff88013aff9088 RCX: 0000000000000002
[   32.331651] RDX: 0000000080000002 RSI: ffff88013fec2350 RDI: 00000000ffffffff
[   32.332083] RBP: 00000000000405fb R08: ffff88013950c400 R09: ffff88013ac43ea0
[   32.332476] R10: 0000000000000014 R11: 0000000000000014 R12: ffff88013b199000
[   32.332871] R13: ffff88013fec2350 R14: ffff88013aff90f8 R15: ffff880135cb5180
[   32.333277] FS:  0000000000000000(0000) GS:ffff88013fd80000(0000) knlGS:0000000000000000
[   32.333725] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.334054] CR2: 00007f49836d1018 CR3: 0000000139475000 CR4: 00000000000006a0
[   32.334438] Call Trace:
[   32.334578]  ? iget_locked+0x69/0x190
[   32.334790]  ? ext4_iget+0x3f/0xc00
[   32.334990]  ? preempt_count_add+0x44/0x90
[   32.335213]  ? d_alloc_parallel+0x358/0x4f0
[   32.335445]  ? ext4_lookup+0xd6/0x200
[   32.335650]  ? path_openat+0x9d6/0x1400
[   32.335888]  ? mmap_region+0x265/0x590
[   32.336097]  ? do_filp_open+0x8e/0x100
[   32.336306]  ? __lru_cache_add+0x6e/0x90
[   32.336522]  ? kmem_cache_alloc+0x22/0x120
[   32.336756]  ? do_sys_open+0x181/0x210
[   32.336968]  ? do_syscall_64+0x56/0x2f0
[   32.337180]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   32.337461] ---[ end trace 109b3dd4fd5e6454 ]---
[   32.341735] WARNING: CPU: 1 PID: 2300 at fs/inode.c:841 find_inode_fast.isra.24+0x90/0xa0
[   32.342298] CPU: 1 PID: 2300 Comm: parallels-serve Tainted: G        W         4.18.0-rc1+ #32
[   32.342767] RIP: 0010:find_inode_fast.isra.24+0x90/0xa0
[   32.343116] Code: 48 89 d8 5b 5d 41 5c 41 5d 41 5e c3 f6 c4 80 75 11 f0 ff 83 30 01 00 00 4c 89 f7 e8 4a 7c 24 00 eb de 4c 89 f7 e8 40 7c 24 00 <0f> 0b 48 c7 c3 8c ff ff ff eb cb 0f 1f 44 00 00 41 54 49 c7 c4 30 
[   32.344127] RSP: 0018:ffffc90001137a68 EFLAGS: 00010282
[   32.344405] RAX: 0000000080000001 RBX: ffff880135cc1858 RCX: 0000000000000002
[   32.344785] RDX: 0000000080000002 RSI: ffff88013ff13260 RDI: 00000000ffffffff
[   32.345162] RBP: 00000000000c04c0 R08: ffff88013950c400 R09: ffff88013ac46548
[   32.345533] R10: 000000000000001c R11: 000000000000001c R12: ffff88013b199000
[   32.345914] R13: ffff88013ff13260 R14: ffff880135cc18c8 R15: 0000000000000000
[   32.346291] FS:  00007fedf735d700(0000) GS:ffff88013fc80000(0000) knlGS:0000000000000000
[   32.346732] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.347078] CR2: 0000000002741088 CR3: 0000000139d59000 CR4: 00000000000006a0
[   32.347522] Call Trace:
[   32.347676]  ? iget_locked+0x69/0x190
[   32.347893]  ? ext4_iget+0x3f/0xc00
[   32.348082]  ? preempt_count_add+0x44/0x90
[   32.348303]  ? d_alloc_parallel+0x358/0x4f0
[   32.348527]  ? ext4_lookup+0xd6/0x200
[   32.348789]  ? __lookup_slow+0x8c/0x150
[   32.348997]  ? lookup_slow+0x30/0x50
[   32.349190]  ? walk_component+0x1b4/0x490
[   32.349405]  ? path_lookupat.isra.75+0x70/0x200
[   32.349646]  ? filename_lookup.part.76+0x9b/0x120
[   32.349907]  ? kmem_cache_alloc+0x22/0x120
[   32.350127]  ? getname_flags+0x49/0x170
[   32.350333]  ? vfs_statx+0x6e/0xd0
[   32.350517]  ? _raw_spin_unlock+0xd/0x20
[   32.350732]  ? __handle_mm_fault+0x6f2/0xbf0
[   32.350962]  ? __do_sys_newstat+0x39/0x70
[   32.351178]  ? _copy_to_user+0x26/0x30
[   32.351396]  ? __x64_sys_rt_sigprocmask+0x8a/0xd0
[   32.351697]  ? do_syscall_64+0x56/0x2f0
[   32.351946]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   32.352278] ---[ end trace 109b3dd4fd5e6455 ]---
[   32.352667] WARNING: CPU: 1 PID: 2300 at fs/inode.c:841 find_inode_fast.isra.24+0x90/0xa0
[   32.353193] CPU: 1 PID: 2300 Comm: parallels-serve Tainted: G        W         4.18.0-rc1+ #32
[   32.353739] RIP: 0010:find_inode_fast.isra.24+0x90/0xa0
[   32.354069] Code: 48 89 d8 5b 5d 41 5c 41 5d 41 5e c3 f6 c4 80 75 11 f0 ff 83 30 01 00 00 4c 89 f7 e8 4a 7c 24 00 eb de 4c 89 f7 e8 40 7c 24 00 <0f> 0b 48 c7 c3 8c ff ff ff eb cb 0f 1f 44 00 00 41 54 49 c7 c4 30 
[   32.355255] RSP: 0018:ffffc90001137a68 EFLAGS: 00010282
[   32.355566] RAX: 0000000080000001 RBX: ffff880135c8efc8 RCX: 0000000000000002
[   32.355991] RDX: 0000000080000002 RSI: ffff88013ffb6d28 RDI: 00000000ffffffff
[   32.356411] RBP: 00000000000c0485 R08: ffff88013950c400 R09: ffff88013ac453a8
[   32.356792] R10: 0000000000000018 R11: 0000000000000018 R12: ffff88013b199000
[   32.357297] R13: ffff88013ffb6d28 R14: ffff880135c8f038 R15: 0000000000000000
[   32.357820] FS:  00007fedf735d700(0000) GS:ffff88013fc80000(0000) knlGS:0000000000000000
[   32.358430] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.359200] CR2: 0000000002741088 CR3: 0000000139d59000 CR4: 00000000000006a0
[   32.359622] Call Trace:
[   32.359768]  ? iget_locked+0x69/0x190
[   32.359967]  ? ext4_iget+0x3f/0xc00
[   32.360167]  ? preempt_count_add+0x44/0x90
[   32.360388]  ? d_alloc_parallel+0x358/0x4f0
[   32.360615]  ? ext4_lookup+0xd6/0x200
[   32.360820]  ? __lookup_slow+0x8c/0x150
[   32.361031]  ? lookup_slow+0x30/0x50
[   32.361224]  ? walk_component+0x1b4/0x490
[   32.361439]  ? path_lookupat.isra.75+0x70/0x200
[   32.361698]  ? filename_lookup.part.76+0x9b/0x120
[   32.361974]  ? kmem_cache_alloc+0x22/0x120
[   32.362215]  ? getname_flags+0x49/0x170
[   32.362436]  ? vfs_statx+0x6e/0xd0
[   32.362634]  ? _raw_spin_unlock+0xd/0x20
[   32.362868]  ? __handle_mm_fault+0x6f2/0xbf0
[   32.363108]  ? __do_sys_newstat+0x39/0x70
[   32.363357]  ? sigprocmask+0x6d/0x90
[   32.363546]  ? _copy_to_user+0x26/0x30
[   32.363776]  ? __x64_sys_rt_sigprocmask+0x8a/0xd0
[   32.364046]  ? do_syscall_64+0x56/0x2f0
[   32.364259]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   32.364546] ---[ end trace 109b3dd4fd5e6456 ]---
[   33.075577] WARNING: CPU: 3 PID: 2305 at fs/inode.c:841 find_inode_fast.isra.24+0x90/0xa0
[   33.076723] CPU: 3 PID: 2305 Comm: dmesg Tainted: G        W         4.18.0-rc1+ #32
[   33.077766] RIP: 0010:find_inode_fast.isra.24+0x90/0xa0
[   33.078466] Code: 48 89 d8 5b 5d 41 5c 41 5d 41 5e c3 f6 c4 80 75 11 f0 ff 83 30 01 00 00 4c 89 f7 e8 4a 7c 24 00 eb de 4c 89 f7 e8 40 7c 24 00 <0f> 0b 48 c7 c3 8c ff ff ff eb cb 0f 1f 44 00 00 41 54 49 c7 c4 30 
[   33.081018] RSP: 0018:ffffc90001107b80 EFLAGS: 00010282
[   33.081721] RAX: 0000000080000001 RBX: ffff88013aff9088 RCX: 0000000000000002
[   33.082670] RDX: 0000000080000002 RSI: ffff88013fec2350 RDI: 00000000ffffffff
[   33.083613] RBP: 00000000000405fb R08: ffff88013950c400 R09: ffff88013ac43ea0
[   33.084521] R10: 0000000000000014 R11: 0000000000000014 R12: ffff88013b199000
[   33.085259] R13: ffff88013fec2350 R14: ffff88013aff90f8 R15: ffff880135cb5180
[   33.085882] FS:  0000000000000000(0000) GS:ffff88013fd80000(0000) knlGS:0000000000000000
[   33.086433] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.086841] CR2: 00007f85a9d03018 CR3: 0000000139d99000 CR4: 00000000000006a0
[   33.087267] Call Trace:
[   33.087410]  ? iget_locked+0x69/0x190
[   33.087839]  ? ext4_iget+0x3f/0xc00
[   33.088059]  ? preempt_count_add+0x44/0x90
[   33.088285]  ? d_alloc_parallel+0x358/0x4f0
[   33.088515]  ? ext4_lookup+0xd6/0x200
[   33.088725]  ? path_openat+0x9d6/0x1400
[   33.088937]  ? do_filp_open+0x8e/0x100
[   33.089153]  ? __lru_cache_add+0x6e/0x90
[   33.089363]  ? kmem_cache_alloc+0x22/0x120
[   33.089582]  ? do_sys_open+0x181/0x210
[   33.089788]  ? do_syscall_64+0x56/0x2f0
[   33.089994]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   33.090271] ---[ end trace 109b3dd4fd5e6457 ]---

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: Commit "new primitive: discard_new_inode()" introduces a problem
  2018-08-01 16:19         ` Kirill Tkhai
@ 2018-08-01 16:34           ` Al Viro
  2018-08-02  3:14             ` Rafael David Tinoco
  2018-08-02  7:43             ` Kirill Tkhai
  0 siblings, 2 replies; 11+ messages in thread
From: Al Viro @ 2018-08-01 16:34 UTC (permalink / raw)
  To: Kirill Tkhai; +Cc: linux-fsdevel@vger.kernel.org, LKML

On Wed, Aug 01, 2018 at 07:19:35PM +0300, Kirill Tkhai wrote:
> On 01.08.2018 19:16, Al Viro wrote:
> > On Wed, Aug 01, 2018 at 05:11:51PM +0100, Al Viro wrote:
> >> On Wed, Aug 01, 2018 at 06:43:56PM +0300, Kirill Tkhai wrote:
> >>> #git status
> >>> HEAD detached at 22dc9a168272
> >>
> >> Wait a sec - just that commit?  With discard_new_inode() not even
> >> used anywhere?  Then any of those -ENOMEM is disguised ERR_PTR(-ESTALE)
> >> from find_inode()/find_inode_fast(), i.e. an inode found by
> >> iget5_locked() (your /etc is on ext4) with I_CREATING still set.
> > 
> > iget_locked(), that is.

OK, I see what's going on there.  See if this fixes the problem:

diff --git a/fs/dcache.c b/fs/dcache.c
index 0e8e5de3c48a..b11f566bcd66 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1892,7 +1892,7 @@ void d_instantiate_new(struct dentry *entry, struct inode *inode)
 	spin_lock(&inode->i_lock);
 	__d_instantiate(entry, inode);
 	WARN_ON(!(inode->i_state & I_NEW));
-	inode->i_state &= ~I_NEW;
+	inode->i_state &= ~I_NEW & ~I_CREATING;
 	smp_mb();
 	wake_up_bit(&inode->i_state, __I_NEW);
 	spin_unlock(&inode->i_lock);

^ permalink raw reply related	[flat|nested] 11+ messages in thread

* Re: Commit "new primitive: discard_new_inode()" introduces a problem
  2018-08-01 16:34           ` Al Viro
@ 2018-08-02  3:14             ` Rafael David Tinoco
  2018-08-02  7:43             ` Kirill Tkhai
  1 sibling, 0 replies; 11+ messages in thread
From: Rafael David Tinoco @ 2018-08-02  3:14 UTC (permalink / raw)
  To: Al Viro; +Cc: Kirill Tkhai, linux-fsdevel@vger.kernel.org, LKML

On Wed, Aug 01, 2018 at 05:34:08PM +0100, Al Viro wrote:
> On Wed, Aug 01, 2018 at 07:19:35PM +0300, Kirill Tkhai wrote:
> > On 01.08.2018 19:16, Al Viro wrote:
> > > On Wed, Aug 01, 2018 at 05:11:51PM +0100, Al Viro wrote:
> > >> On Wed, Aug 01, 2018 at 06:43:56PM +0300, Kirill Tkhai wrote:
> > >>> #git status
> > >>> HEAD detached at 22dc9a168272
> > >>
> > >> Wait a sec - just that commit?  With discard_new_inode() not even
> > >> used anywhere?  Then any of those -ENOMEM is disguised ERR_PTR(-ESTALE)
> > >> from find_inode()/find_inode_fast(), i.e. an inode found by
> > >> iget5_locked() (your /etc is on ext4) with I_CREATING still set.
> > > 
> > > iget_locked(), that is.
> 
> OK, I see what's going on there.  See if this fixes the problem:
> 
> diff --git a/fs/dcache.c b/fs/dcache.c
> index 0e8e5de3c48a..b11f566bcd66 100644
> --- a/fs/dcache.c
> +++ b/fs/dcache.c
> @@ -1892,7 +1892,7 @@ void d_instantiate_new(struct dentry *entry, struct inode *inode)
>  	spin_lock(&inode->i_lock);
>  	__d_instantiate(entry, inode);
>  	WARN_ON(!(inode->i_state & I_NEW));
> -	inode->i_state &= ~I_NEW;
> +	inode->i_state &= ~I_NEW & ~I_CREATING;
>  	smp_mb();
>  	wake_up_bit(&inode->i_state, __I_NEW);
>  	spin_unlock(&inode->i_lock);

It fixes the issue.

Results: https://bugs.linaro.org/show_bug.cgi?id=3957#c10

Tested-by: Rafael David Tinoco <rafael.tinoco@linaro.org>

Thank you!

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: Commit "new primitive: discard_new_inode()" introduces a problem
  2018-08-01 16:34           ` Al Viro
  2018-08-02  3:14             ` Rafael David Tinoco
@ 2018-08-02  7:43             ` Kirill Tkhai
  1 sibling, 0 replies; 11+ messages in thread
From: Kirill Tkhai @ 2018-08-02  7:43 UTC (permalink / raw)
  To: Al Viro; +Cc: linux-fsdevel@vger.kernel.org, LKML

On 01.08.2018 19:34, Al Viro wrote:
> On Wed, Aug 01, 2018 at 07:19:35PM +0300, Kirill Tkhai wrote:
>> On 01.08.2018 19:16, Al Viro wrote:
>>> On Wed, Aug 01, 2018 at 05:11:51PM +0100, Al Viro wrote:
>>>> On Wed, Aug 01, 2018 at 06:43:56PM +0300, Kirill Tkhai wrote:
>>>>> #git status
>>>>> HEAD detached at 22dc9a168272
>>>>
>>>> Wait a sec - just that commit?  With discard_new_inode() not even
>>>> used anywhere?  Then any of those -ENOMEM is disguised ERR_PTR(-ESTALE)
>>>> from find_inode()/find_inode_fast(), i.e. an inode found by
>>>> iget5_locked() (your /etc is on ext4) with I_CREATING still set.
>>>
>>> iget_locked(), that is.
> 
> OK, I see what's going on there.  See if this fixes the problem:
> 
> diff --git a/fs/dcache.c b/fs/dcache.c
> index 0e8e5de3c48a..b11f566bcd66 100644
> --- a/fs/dcache.c
> +++ b/fs/dcache.c
> @@ -1892,7 +1892,7 @@ void d_instantiate_new(struct dentry *entry, struct inode *inode)
>  	spin_lock(&inode->i_lock);
>  	__d_instantiate(entry, inode);
>  	WARN_ON(!(inode->i_state & I_NEW));
> -	inode->i_state &= ~I_NEW;
> +	inode->i_state &= ~I_NEW & ~I_CREATING;
>  	smp_mb();
>  	wake_up_bit(&inode->i_state, __I_NEW);
>  	spin_unlock(&inode->i_lock);

Yeah, this fixes the problem.

Tested-by: Kirill Tkhai <ktkhai@virtuozzo.com>

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: Commit "new primitive: discard_new_inode()" introduces a problem
  2018-08-01 16:16       ` Al Viro
  2018-08-01 16:19         ` Kirill Tkhai
@ 2018-08-01 16:27         ` Al Viro
  2018-08-02  2:36           ` Rafael David Tinoco
  1 sibling, 1 reply; 11+ messages in thread
From: Al Viro @ 2018-08-01 16:27 UTC (permalink / raw)
  To: Kirill Tkhai; +Cc: linux-fsdevel@vger.kernel.org, LKML

On Wed, Aug 01, 2018 at 05:16:48PM +0100, Al Viro wrote:
> On Wed, Aug 01, 2018 at 05:11:51PM +0100, Al Viro wrote:
> > On Wed, Aug 01, 2018 at 06:43:56PM +0300, Kirill Tkhai wrote:
> > > #git status
> > > HEAD detached at 22dc9a168272
> > 
> > Wait a sec - just that commit?  With discard_new_inode() not even
> > used anywhere?  Then any of those -ENOMEM is disguised ERR_PTR(-ESTALE)
> > from find_inode()/find_inode_fast(), i.e. an inode found by
> > iget5_locked() (your /etc is on ext4) with I_CREATING still set.
> 
> iget_locked(), that is.
> 
> > And that is set only by insert_inode_locked()/insert_inode_locked4(),
> > and only until unlock_new_inode().
> > 
> > Could you slap WARN_ON(1) before these return ERR_PTR(-ESTALE) in
> > find_inode{,_fast}() and see if that's what's getting triggered?

... and I still can't reproduce it here - exact same tree, same .config,
same reproducer.  The only difference is that it's a gcc-5 build, but
I can do gcc-6 as well; doubt that it'll change anything.

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: Commit "new primitive: discard_new_inode()" introduces a problem
  2018-08-01 16:27         ` Al Viro
@ 2018-08-02  2:36           ` Rafael David Tinoco
  0 siblings, 0 replies; 11+ messages in thread
From: Rafael David Tinoco @ 2018-08-02  2:36 UTC (permalink / raw)
  To: Al Viro; +Cc: Kirill Tkhai, linux-fsdevel@vger.kernel.org, LKML

On Wed, Aug 01, 2018 at 05:27:39PM +0100, Al Viro wrote:
> On Wed, Aug 01, 2018 at 05:16:48PM +0100, Al Viro wrote:
> > On Wed, Aug 01, 2018 at 05:11:51PM +0100, Al Viro wrote:
> > > On Wed, Aug 01, 2018 at 06:43:56PM +0300, Kirill Tkhai wrote:
> > > > #git status
> > > > HEAD detached at 22dc9a168272
> > > 
> > > Wait a sec - just that commit?  With discard_new_inode() not even
> > > used anywhere?  Then any of those -ENOMEM is disguised ERR_PTR(-ESTALE)
> > > from find_inode()/find_inode_fast(), i.e. an inode found by
> > > iget5_locked() (your /etc is on ext4) with I_CREATING still set.
> > 
> > iget_locked(), that is.
> > 
> > > And that is set only by insert_inode_locked()/insert_inode_locked4(),
> > > and only until unlock_new_inode().
> > > 
> > > Could you slap WARN_ON(1) before these return ERR_PTR(-ESTALE) in
> > > find_inode{,_fast}() and see if that's what's getting triggered?
> 
> ... and I still can't reproduce it here - exact same tree, same .config,
> same reproducer.  The only difference is that it's a gcc-5 build, but
> I can do gcc-6 as well; doubt that it'll change anything.

I bisected an issue with our functional tests to this commit also.

LTP started failing for -next for tests depending on remounts to RO.

Link: https://bugs.linaro.org/show_bug.cgi?id=3957

Reproducer:

    # testfile = ext4 filesystem

    mount ./testfile /mnt
    rm -f /mnt/read-only
    touch /mnt/read-only
    mount -o remount,ro /mnt
    ls /mnt
    $ ls /mnt
    ls: cannot access '/mnt/read-only': Cannot allocate memory

Could not reproduce with xfs.

More information on investigation:

https://bugs.linaro.org/show_bug.cgi?id=3957#c3
https://bugs.linaro.org/show_bug.cgi?id=3957#c4

Trace of a failing acct (thought originally related):

https://bugs.linaro.org/show_bug.cgi?id=3957#c5
do_filp_open() -> path_openat() -> do_last() -> lookup_open()
(check ext4_lookup() and beyond)

I'm testing your patch right now. Will inform soon.

-Rafael

^ permalink raw reply	[flat|nested] 11+ messages in thread

end of thread, other threads:[~2018-08-02  7:43 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2018-08-01 14:43 Commit "new primitive: discard_new_inode()" introduces a problem Kirill Tkhai
2018-08-01 15:19 ` Al Viro
2018-08-01 15:43   ` Kirill Tkhai
2018-08-01 16:11     ` Al Viro
2018-08-01 16:16       ` Al Viro
2018-08-01 16:19         ` Kirill Tkhai
2018-08-01 16:34           ` Al Viro
2018-08-02  3:14             ` Rafael David Tinoco
2018-08-02  7:43             ` Kirill Tkhai
2018-08-01 16:27         ` Al Viro
2018-08-02  2:36           ` Rafael David Tinoco

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