Thomas Gleixner 0becc0ae5b x86/mce: Make timer handling more robust ... Erik reported that on a preproduction hardware a CMCI storm triggers the BUG_ON in add_timer_on(). The reason is that the per CPU MCE timer is started by the CMCI logic before the MCE CPU hotplug callback starts the timer with add_timer_on(). So the timer is already queued which triggers the BUG. Using add_timer_on() is pretty pointless in this code because the timer is strictlty per CPU, initialized as pinned and all operations which arm the timer happen on the CPU to which the timer belongs. Simplify the whole machinery by using mod_timer() instead of add_timer_on() which avoids the problem because mod_timer() can handle already queued timers. Use __start_timer() everywhere so the earliest armed expiry time is preserved. Reported-by: Erik Veijola <erik.veijola@intel.com> Tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Tony Luck <tony.luck@intel.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701310936080.3457@nanos Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2017-01-31 21:47:58 +01:00
..
acpi	x86/init: Add i8042 state to the platform data	2016-12-19 11:34:15 +01:00
apic	x86/ioapic: Restore IO-APIC irq_chip retrigger callback	2017-01-18 15:37:28 +01:00
cpu	x86/mce: Make timer handling more robust	2017-01-31 21:47:58 +01:00
fpu	x86/fpu/xstate: Fix xcomp_bv in XSAVES header	2017-01-24 09:04:48 +01:00
kprobes	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
.gitignore
alternative.c	x86/alternatives: Do not use sync_core() to serialize I$	2016-12-20 09:36:42 +01:00
amd_gart_64.c
amd_nb.c	x86/amd_nb: Add SMN and Indirect Data Fabric access for AMD Fam17h	2016-11-16 20:46:38 +01:00
apb_timer.c	Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-25 14:30:04 -08:00
aperture_64.c
apm_32.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
asm-offsets.c
asm-offsets_32.c
asm-offsets_64.c
audit_64.c
bootflag.c
check.c
cpuid.c	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-12 19:25:04 -08:00
crash.c	kexec_file: Change kexec_add_buffer to take kexec_buf as argument.	2016-11-30 23:14:59 +11:00
crash_dump_32.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
crash_dump_64.c
devicetree.c
doublefault.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
dumpstack.c	Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-12 13:49:57 -08:00
dumpstack_32.c	x86/dumpstack: Make stack name tags more comprehensible	2016-11-21 13:00:42 +01:00
dumpstack_64.c	x86/dumpstack: Make stack name tags more comprehensible	2016-11-21 13:00:42 +01:00
e820.c	x86/e820: Don't merge consecutive E820_PRAM ranges	2016-10-16 11:16:48 +02:00
early-quirks.c	Merge tag 'drm-for-v4.9' of git://people.freedesktop.org/~airlied/linux	2016-10-11 18:12:22 -07:00
early_printk.c
ebda.c
espfix_64.c
ftrace.c
head32.c
head64.c
head_32.S	Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-12 13:49:57 -08:00
head_64.S	x86/boot/64: Push correct start_cpu() return address	2016-12-14 08:48:05 +01:00
hpet.c	Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-25 14:30:04 -08:00
hw_breakpoint.c
i8237.c
i8253.c
i8259.c
io_delay.c
ioport.c
irq.c	x86: Remove empty idle.h header	2016-12-09 21:23:22 +01:00
irq_32.c
irq_64.c	x86: Remove empty idle.h header	2016-12-09 21:23:22 +01:00
irq_work.c
irqinit.c
itmt.c	x86/sched: Use #include <linux/mutex.h> instead of #include <asm/mutex.h>	2016-11-28 09:43:49 +01:00
jump_label.c
kdebugfs.c
kexec-bzimage64.c	kexec_file: Change kexec_add_buffer to take kexec_buf as argument.	2016-11-30 23:14:59 +11:00
kgdb.c
ksysfs.c
kvm.c	Merge branch 'x86-idle-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-12 14:55:04 -08:00
kvmclock.c	clocksource: Use a plain u64 instead of cycle_t	2016-12-25 11:04:12 +01:00
ldt.c	Merge branch 'akpm' (patches from Andrew)	2016-12-12 20:50:02 -08:00
livepatch.c
machine_kexec_32.c
machine_kexec_64.c	kexec: export the value of phys_base instead of symbol address	2016-12-14 16:04:07 -08:00
Makefile	Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-18 13:59:10 -08:00
mcount_64.S	x86: Fix export for mcount and __fentry__	2016-10-26 12:38:17 +02:00
mmconf-fam10h_64.c
module.c
mpparse.c
msr.c	x86/msr: Remove bogus cleanup from the error path	2016-12-25 10:47:41 +01:00
nmi.c
nmi_selftest.c
paravirt-spinlocks.c	x86/paravirt: Optimize native pv_lock_ops.vcpu_is_preempted()	2016-11-22 12:48:11 +01:00
paravirt.c	x86/fpu: Remove clts()	2016-11-01 07:47:55 +01:00
paravirt_patch_32.c	x86/paravirt: Mark unused patch_default label	2016-12-22 17:43:35 +01:00
paravirt_patch_64.c	x86/paravirt: Mark unused patch_default label	2016-12-22 17:43:35 +01:00
pci-calgary_64.c
pci-dma.c
pci-iommu_table.c
pci-nommu.c
pci-swiotlb.c	swiotlb: Convert swiotlb_force from int to enum	2016-12-19 09:05:20 -05:00
pcspeaker.c
perf_regs.c
platform-quirks.c	x86/init: Add i8042 state to the platform data	2016-12-19 11:34:15 +01:00
pmem.c
probe_roms.c
process.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
process_32.c	Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-22 09:25:45 -08:00
process_64.c	Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-22 09:25:45 -08:00
ptrace.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
pvclock.c	clocksource: Use a plain u64 instead of cycle_t	2016-12-25 11:04:12 +01:00
quirks.c	x86/quirks: Hide maybe-uninitialized warning	2016-10-25 11:45:13 +02:00
reboot.c
reboot_fixups_32.c
relocate_kernel_32.S
relocate_kernel_64.S
resource.c	x86/e820: Prepare e280 code for switch to dynamic storage	2016-09-21 15:02:12 +02:00
rtc.c	timekeeping: Ignore the bogus sleep time if pm_trace is enabled	2016-11-29 18:02:58 +01:00
setup.c	mm: remove x86-only restriction of movable_node	2016-12-12 18:55:07 -08:00
setup_percpu.c	x86/percpu: Remove unnecessary include of module.h, add asm/desc.h	2016-11-15 07:26:37 +01:00
signal.c	Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-10-03 17:29:01 -07:00
signal_compat.c	x86/signal: Remove bogus user_64bit_mode() check from sigaction_compat_abi()	2016-10-20 13:05:15 +02:00
smp.c	x86/apic: Prevent tracing on apic_msr_write_eoi()	2016-11-09 22:03:14 +01:00
smpboot.c	x86/smpboot: Prevent false positive out of bounds cpumask access warning	2016-12-15 11:32:31 +01:00
stacktrace.c
step.c	mm: replace access_process_vm() write parameter with gup_flags	2016-10-19 08:31:25 -07:00
sys_x86_64.c	x86: use simpler API for random address requests	2016-10-11 15:06:32 -07:00
sysfb.c
sysfb_efi.c
sysfb_simplefb.c	x86/sysfb: Fix lfb_size calculation	2016-11-16 09:38:23 +01:00
tboot.c	cpu/hotplug: Cleanup state names	2016-12-25 10:47:44 +01:00
tce_64.c
test_nx.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
test_rodata.c
time.c
tls.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
tls.h
topology.c
trace_clock.c
tracepoint.c	tracing: Have the reg function allow to fail	2016-12-09 09:13:30 -05:00
traps.c	x86/fpu: Handle #NM without FPU emulation as an error	2016-11-01 07:47:54 +01:00
tsc.c	x86/tsc: Add the Intel Denverton Processor to native_calibrate_tsc()	2017-01-14 09:30:37 +01:00
tsc_msr.c	x86/tsc: Set TSC_KNOWN_FREQ and TSC_RELIABLE flags on Intel Atom SoCs	2016-11-18 10:58:31 +01:00
tsc_sync.c	x86/tsc: Limit the adjust value further	2016-12-18 16:37:04 +01:00
unwind_frame.c	x86/unwind: Disable KASAN checks for non-current tasks	2017-01-12 09:28:27 +01:00
unwind_guess.c	x86/unwind: Fix guess-unwinder regression	2016-11-28 07:47:54 +01:00
uprobes.c
verify_cpu.S
vm86_32.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
vmlinux.lds.S	x86/boot: Move the _stext marker to before the boot code	2016-10-20 09:15:24 +02:00
vsmp_64.c
x86_init.c	x86/init: Remove i8042_detect() from platform ops	2016-12-19 11:34:15 +01:00