Re: next-20190125 - objtool complains about dumpstack
From: valdis . kletnieks
Date: Mon Jan 28 2019 - 00:01:20 EST
On Sun, 27 Jan 2019 22:18:25 -0600, Josh Poimboeuf said:
> On Sun, Jan 27, 2019 at 10:45:03PM -0500, valdis.kletnieks@xxxxxx wrote:
> > Seen in a build:
> >
> > CC arch/x86/kernel/dumpstack.o
> > arch/x86/kernel/dumpstack.o: warning: objtool: oops_begin()+0x9: undefined stack state
> > arch/x86/kernel/dumpstack.o: warning: objtool: oops_begin()+0x0: stack state mismatch: cfa1=6+16 cfa2=7+8
> >
> > Probably a gcc9 code generation that objtool doesn't know about?
>
> Can you share the .o file?
Sure. Attached.
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%sCode: %42ph <%02x> %21ph
%sRIP: %04x:%pS
d ? %sCall Trace:
%s <%s>
%s %s%pB
%s </%s>
PTI NOPTI SMP PREEMPT d%s: %04lx [#%d]%s%s%s%s%s
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NR_ZONE_ACTIVE_FILE
NR_ZONE_UNEVICTABLE
NR_ZONE_WRITE_PENDING
NR_MLOCK
NR_PAGETABLE
NR_KERNEL_STACK_KB
NR_BOUNCE
NR_ZSPAGES
NR_FREE_CMA_PAGES $
NR_VM_ZONE_STAT_ITEMS 9
NR_LRU_BASE =
NR_INACTIVE_ANON A
NR_ACTIVE_ANON E
NR_INACTIVE_FILE I
NR_ACTIVE_FILE M
NR_UNEVICTABLE Q
NR_SLAB_RECLAIMABLE U
NR_SLAB_UNRECLAIMABLE Y
NR_ISOLATED_ANON ]
NR_ISOLATED_FILE `
WORKINGSET_NODES d
WORKINGSET_REFAULT h
WORKINGSET_ACTIVATE l
WORKINGSET_RESTORE p
WORKINGSET_NODERECLAIM t
NR_ANON_MAPPED x
NR_FILE_MAPPED |
NR_FILE_PAGES
NR_FILE_DIRTY ?
NR_WRITEBACK ?
NR_WRITEBACK_TEMP ?
NR_SHMEM ?
NR_SHMEM_THPS ?
NR_SHMEM_PMDMAPPED ?
NR_ANON_THPS ?
NR_UNSTABLE_NFS ?
NR_VMSCAN_WRITE
NR_VMSCAN_IMMEDIATE ¤
NR_DIRTIED ¨
NR_WRITTEN ¬
NR_KERNEL_MISC_RECLAIMABLE °
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?node_stat_item Ø ?physid_mask_t ? ?irq_cpustat_t Ô ?apic_intr_mode_id È ?pcpu_fc ¥ ?pid_type ð ?kernel_cap_t ?guid_t # ?uuid_t 4 ?compound_page_dtor o ?vm_event_item ?Elf64_Dyn × ?ftrace_func_t ?ftrace_tracing_type_t 3 ?ftrace_bug_type ? ?trace_func_graph_ret_t ¡ ?trace_func_graph_ent_t ?kprobe_opcode_t ä ?die_val % ?show_regs_mode ? ?stack_type < = ¡ ? ö û
arch/x86/kernel ./arch/x86/include/asm ./include/linux ./include/asm-generic ./include/generated ./include/linux/sched ./include/uapi/asm-generic ./include/video ./include/uapi/linux dumpstack.c current.h kexec.h qspinlock.h compiler.h irqflags.h preempt.h kasan.h atomic-instrumented.h kasan-checks.h atomic.h printk.h task_stack.h cpu_entry_area.h ptrace.h uaccess.h stacktrace.h unwind.h nmi.h bitops.h mm.h int-ll64.h int-ll64.h posix_types.h types.h alternative.h nops.h init.h kernel.h percpu.h percpu.h screen_info.h ioctl.h apm_bios.h ist.h edid.h mem_encrypt.h page_types.h page_64.h page.h segment.h pgtable_64_types.h pgtable_types.h pgtable-nop4d.h jump_label.h string_64.h cpumask.h cpumask.h atomic-long.h msr.h special_insns.h processor.h cpufeature.h qspinlock_types.h lockdep.h debug_locks.h spinlock_types.h rwlock_types.h seqlock.h nodemask.h mmzone.h rcupdate.h time.h tsc.h timex.h jiffies.h timekeeping.h timer.h workqueue.h notifier.h smp.h x86_init.h mpspec.h topology.h io.h vmalloc.h realmode.h acpi.h fixmap.h mm_types.h hardirq.h apic.h io_apic.h smp.h percpu.h gfp.h page_ref.h ioport.h pgtable.h pgtable_64.h dcache.h highuid.h uidgid.h pid.h capability.h uuid.h uuid.h hrtimer.h latencytop.h sched.h fs.h percpu_counter.h quota.h huge_mm.h vm_event_item.h vmstat.h sysctl.h umh.h kmod.h vdso.h elf.h elf.h elf.h kobject.h moduleparam.h module.h sections.h asm.h sections.h signal.h task.h key.h ratelimit.h user.h cred.h nsproxy.h ftrace.h ftrace.h stddef.h kprobes.h kprobes.h utsname.h ftrace_irq.h kdebug.h debug.h crash_core.h irq.h pm.h nmi.h intel_ds.h edd.h Ëä=Â} ?æ[u ??Yu0?~õ
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