Re: v2.6.24-mm1 lockdep.c warning
On Mon, 04 Feb 2008 20:26:00 -0400
Kevin Winchester <[EMAIL PROTECTED]> wrote:
> Found this in my dmesg:
>
> [ 10.671500] [ cut here ]
> [ 10.671500] WARNING: at kernel/lockdep.c:2037
> trace_hardirqs_on+0xba/0x113()
> [ 10.671500] Pid: 0, comm: swapper Not tainted 2.6.24-mm1 #2
> [ 10.671500] [] warn_on_slowpath+0x3c/0x4c
> [ 10.671500] [] ? check_usage_forwards+0x19/0x3b
> [ 10.671500] [] ? mark_lock+0x1ab/0x3ae
> [ 10.671500] [] ? ata_hsm_qc_complete+0xbc/0xc2
> [ 10.671500] [] ? _spin_unlock_irq+0x22/0x42
> [ 10.671500] [] trace_hardirqs_on+0xba/0x113
> [ 10.671500] [] _spin_unlock_irq+0x22/0x42
> [ 10.671500] [] hpet_rtc_interrupt+0xe8/0x299
> [ 10.671500] [] handle_IRQ_event+0x1a/0x46
> [ 10.671500] [] handle_edge_irq+0xa6/0x102
> [ 10.671500] [] ? handle_edge_irq+0x0/0x102
> [ 10.671500] [] do_IRQ+0x87/0xb0
> [ 10.671500] [] common_interrupt+0x2e/0x34
> [ 10.671500] [] ? default_idle+0x45/0x72
> [ 10.671500] [] ? default_idle+0x0/0x72
> [ 10.671500] [] cpu_idle+0x73/0xa3
> [ 10.671500] [] rest_init+0x61/0x63
> [ 10.671500] ===
> [ 10.671500] ---[ end trace e5cdd42f557be0f0 ]---
>
yup, I hit that too. It looks like Ingo has deided to merge the
below into mainline. I'll put it in the hot-fixes directory.
From: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---
include/asm-generic/rtc.h | 11 +++
1 file changed, 7 insertions(+), 4 deletions(-)
diff -puN include/linux/rtc.h~hpet-borkage-fix include/linux/rtc.h
diff -puN include/asm-generic/rtc.h~hpet-borkage-fix include/asm-generic/rtc.h
--- a/include/asm-generic/rtc.h~hpet-borkage-fix
+++ a/include/asm-generic/rtc.h
@@ -35,10 +35,11 @@
static inline unsigned char rtc_is_updating(void)
{
unsigned char uip;
+ unsigned long flags;
- spin_lock_irq(_lock);
+ spin_lock_irqsave(_lock, flags);
uip = (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP);
- spin_unlock_irq(_lock);
+ spin_unlock_irqrestore(_lock, flags);
return uip;
}
@@ -46,6 +47,8 @@ static inline unsigned int get_rtc_time(
{
unsigned long uip_watchdog = jiffies;
unsigned char ctrl;
+ unsigned long flags;
+
#ifdef CONFIG_MACH_DECSTATION
unsigned int real_year;
#endif
@@ -72,7 +75,7 @@ static inline unsigned int get_rtc_time(
* RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
* by the RTC when initially set to a non-zero value.
*/
- spin_lock_irq(_lock);
+ spin_lock_irqsave(_lock, flags);
time->tm_sec = CMOS_READ(RTC_SECONDS);
time->tm_min = CMOS_READ(RTC_MINUTES);
time->tm_hour = CMOS_READ(RTC_HOURS);
@@ -83,7 +86,7 @@ static inline unsigned int get_rtc_time(
real_year = CMOS_READ(RTC_DEC_YEAR);
#endif
ctrl = CMOS_READ(RTC_CONTROL);
- spin_unlock_irq(_lock);
+ spin_unlock_irqrestore(_lock, flags);
if (!(ctrl & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
{
_
--
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v2.6.24-mm1 lockdep.c warning
Found this in my dmesg: [ 10.671500] [ cut here ] [ 10.671500] WARNING: at kernel/lockdep.c:2037 trace_hardirqs_on+0xba/0x113() [ 10.671500] Pid: 0, comm: swapper Not tainted 2.6.24-mm1 #2 [ 10.671500] [] warn_on_slowpath+0x3c/0x4c [ 10.671500] [] ? check_usage_forwards+0x19/0x3b [ 10.671500] [] ? mark_lock+0x1ab/0x3ae [ 10.671500] [] ? ata_hsm_qc_complete+0xbc/0xc2 [ 10.671500] [] ? _spin_unlock_irq+0x22/0x42 [ 10.671500] [] trace_hardirqs_on+0xba/0x113 [ 10.671500] [] _spin_unlock_irq+0x22/0x42 [ 10.671500] [] hpet_rtc_interrupt+0xe8/0x299 [ 10.671500] [] handle_IRQ_event+0x1a/0x46 [ 10.671500] [] handle_edge_irq+0xa6/0x102 [ 10.671500] [] ? handle_edge_irq+0x0/0x102 [ 10.671500] [] do_IRQ+0x87/0xb0 [ 10.671500] [] common_interrupt+0x2e/0x34 [ 10.671500] [] ? default_idle+0x45/0x72 [ 10.671500] [] ? default_idle+0x0/0x72 [ 10.671500] [] cpu_idle+0x73/0xa3 [ 10.671500] [] rest_init+0x61/0x63 [ 10.671500] === [ 10.671500] ---[ end trace e5cdd42f557be0f0 ]--- I have no idea what went on here - I'll start tracing through the call stack to see if I can figure anything out... config below -- Kevin Winchester # # Automatically generated make config: don't edit # Linux kernel version: 2.6.24-mm1 # Mon Feb 4 20:18:12 2008 # # CONFIG_64BIT is not set CONFIG_X86_32=y # CONFIG_X86_64 is not set CONFIG_X86=y # CONFIG_GENERIC_LOCKBREAK is not set CONFIG_GENERIC_TIME=y CONFIG_GENERIC_CMOS_UPDATE=y CONFIG_CLOCKSOURCE_WATCHDOG=y CONFIG_GENERIC_CLOCKEVENTS=y CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y CONFIG_LOCKDEP_SUPPORT=y CONFIG_STACKTRACE_SUPPORT=y CONFIG_HAVE_LATENCYTOP_SUPPORT=y CONFIG_SEMAPHORE_SLEEPERS=y CONFIG_FAST_CMPXCHG_LOCAL=y CONFIG_MMU=y CONFIG_ZONE_DMA=y CONFIG_QUICKLIST=y CONFIG_GENERIC_ISA_DMA=y CONFIG_GENERIC_IOMAP=y CONFIG_GENERIC_BUG=y CONFIG_GENERIC_HWEIGHT=y # CONFIG_GENERIC_GPIO is not set CONFIG_ARCH_MAY_HAVE_PC_FDC=y CONFIG_DMI=y # CONFIG_RWSEM_GENERIC_SPINLOCK is not set CONFIG_RWSEM_XCHGADD_ALGORITHM=y # CONFIG_ARCH_HAS_ILOG2_U32 is not set # CONFIG_ARCH_HAS_ILOG2_U64 is not set CONFIG_GENERIC_CALIBRATE_DELAY=y # CONFIG_GENERIC_TIME_VSYSCALL is not set # CONFIG_HAVE_SETUP_PER_CPU_AREA is not set CONFIG_ARCH_HIBERNATION_POSSIBLE=y CONFIG_ARCH_SUSPEND_POSSIBLE=y # CONFIG_ZONE_DMA32 is not set CONFIG_ARCH_POPULATES_NODE_MAP=y # CONFIG_AUDIT_ARCH is not set CONFIG_ARCH_SUPPORTS_AOUT=y CONFIG_GENERIC_HARDIRQS=y CONFIG_GENERIC_IRQ_PROBE=y CONFIG_X86_BIOS_REBOOT=y CONFIG_KTIME_SCALAR=y CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config" # # General setup # CONFIG_EXPERIMENTAL=y CONFIG_BROKEN_ON_SMP=y CONFIG_LOCK_KERNEL=y CONFIG_INIT_ENV_ARG_LIMIT=32 CONFIG_LOCALVERSION="" CONFIG_LOCALVERSION_AUTO=y CONFIG_SWAP=y # CONFIG_SYSVIPC is not set # CONFIG_POSIX_MQUEUE is not set # CONFIG_BSD_PROCESS_ACCT is not set # CONFIG_TASKSTATS is not set # CONFIG_AUDIT is not set CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_LOG_BUF_SHIFT=17 # CONFIG_CGROUPS is not set CONFIG_FAIR_GROUP_SCHED=y CONFIG_FAIR_USER_SCHED=y # CONFIG_FAIR_CGROUP_SCHED is not set # CONFIG_SYSFS_DEPRECATED is not set # CONFIG_RELAY is not set CONFIG_NAMESPACES=y # CONFIG_UTS_NS is not set # CONFIG_USER_NS is not set # CONFIG_PID_NS is not set # CONFIG_BLK_DEV_INITRD is not set CONFIG_CC_OPTIMIZE_FOR_SIZE=y CONFIG_SYSCTL=y # CONFIG_EMBEDDED is not set CONFIG_UID16=y CONFIG_SYSCTL_SYSCALL=y CONFIG_KALLSYMS=y CONFIG_KALLSYMS_ALL=y # CONFIG_KALLSYMS_EXTRA_PASS is not set CONFIG_HOTPLUG=y CONFIG_PRINTK=y CONFIG_BUG=y CONFIG_ELF_CORE=y CONFIG_BASE_FULL=y CONFIG_FUTEX=y CONFIG_ANON_INODES=y CONFIG_EPOLL=y CONFIG_SIGNALFD=y CONFIG_TIMERFD=y CONFIG_EVENTFD=y CONFIG_SHMEM=y CONFIG_VM_EVENT_COUNTERS=y CONFIG_SLUB_DEBUG=y # CONFIG_SLAB is not set CONFIG_SLUB=y # CONFIG_SLOB is not set # CONFIG_PROFILING is not set # CONFIG_MARKERS is not set CONFIG_HAVE_OPROFILE=y CONFIG_HAVE_KPROBES=y CONFIG_PROC_PAGE_MONITOR=y CONFIG_SLABINFO=y CONFIG_RT_MUTEXES=y # CONFIG_TINY_SHMEM is not set CONFIG_BASE_SMALL=0 # CONFIG_MODULES is not set CONFIG_BLOCK=y # CONFIG_LBD is not set # CONFIG_BLK_DEV_IO_TRACE is not set # CONFIG_LSF is not set CONFIG_BLK_DEV_BSG=y # # IO Schedulers # CONFIG_IOSCHED_NOOP=y # CONFIG_IOSCHED_AS is not set # CONFIG_IOSCHED_DEADLINE is not set CONFIG_IOSCHED_CFQ=y # CONFIG_DEFAULT_AS is not set # CONFIG_DEFAULT_DEADLINE is not set CONFIG_DEFAULT_CFQ=y # CONFIG_DEFAULT_NOOP is not set CONFIG_DEFAULT_IOSCHED="cfq" # CONFIG_CLASSIC_RCU is not set CONFIG_PREEMPT_RCU=y # # Processor type and features # CONFIG_TICK_ONESHOT=y CONFIG_NO_HZ=y CONFIG_HIGH_RES_TIMERS=y CONFIG_GENERIC_CLOCKEVENTS_BUILD=y # CONFIG_SMP is not set CONFIG_X86_PC=y # CONFIG_X86_ELAN is not set # CONFIG_X86_VOYAGER is not set # CONFIG_X86_NUMAQ is not set # CONFIG_X86_SUMMIT is not set # CONFIG_X86_BIGSMP is not set # CONFIG_X86_VISWS is not set # CONFIG_X86_GENERICARCH is not set # CONFIG_X86_ES7000 is not set # CONFIG_X86_RDC321X is not set #
v2.6.24-mm1 lockdep.c warning
Found this in my dmesg: [ 10.671500] [ cut here ] [ 10.671500] WARNING: at kernel/lockdep.c:2037 trace_hardirqs_on+0xba/0x113() [ 10.671500] Pid: 0, comm: swapper Not tainted 2.6.24-mm1 #2 [ 10.671500] [c011a54f] warn_on_slowpath+0x3c/0x4c [ 10.671500] [c01335a0] ? check_usage_forwards+0x19/0x3b [ 10.671500] [c013376d] ? mark_lock+0x1ab/0x3ae [ 10.671500] [c026c84d] ? ata_hsm_qc_complete+0xbc/0xc2 [ 10.671500] [c03495eb] ? _spin_unlock_irq+0x22/0x42 [ 10.671500] [c0133b0e] trace_hardirqs_on+0xba/0x113 [ 10.671500] [c03495eb] _spin_unlock_irq+0x22/0x42 [ 10.671500] [c011103d] hpet_rtc_interrupt+0xe8/0x299 [ 10.671500] [c0139547] handle_IRQ_event+0x1a/0x46 [ 10.671500] [c013a359] handle_edge_irq+0xa6/0x102 [ 10.671500] [c013a2b3] ? handle_edge_irq+0x0/0x102 [ 10.671500] [c0106070] do_IRQ+0x87/0xb0 [ 10.671500] [c010470a] common_interrupt+0x2e/0x34 [ 10.671500] [c0102974] ? default_idle+0x45/0x72 [ 10.671500] [c010292f] ? default_idle+0x0/0x72 [ 10.671500] [c01028ff] cpu_idle+0x73/0xa3 [ 10.671500] [c033fcd1] rest_init+0x61/0x63 [ 10.671500] === [ 10.671500] ---[ end trace e5cdd42f557be0f0 ]--- I have no idea what went on here - I'll start tracing through the call stack to see if I can figure anything out... config below -- Kevin Winchester # # Automatically generated make config: don't edit # Linux kernel version: 2.6.24-mm1 # Mon Feb 4 20:18:12 2008 # # CONFIG_64BIT is not set CONFIG_X86_32=y # CONFIG_X86_64 is not set CONFIG_X86=y # CONFIG_GENERIC_LOCKBREAK is not set CONFIG_GENERIC_TIME=y CONFIG_GENERIC_CMOS_UPDATE=y CONFIG_CLOCKSOURCE_WATCHDOG=y CONFIG_GENERIC_CLOCKEVENTS=y CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y CONFIG_LOCKDEP_SUPPORT=y CONFIG_STACKTRACE_SUPPORT=y CONFIG_HAVE_LATENCYTOP_SUPPORT=y CONFIG_SEMAPHORE_SLEEPERS=y CONFIG_FAST_CMPXCHG_LOCAL=y CONFIG_MMU=y CONFIG_ZONE_DMA=y CONFIG_QUICKLIST=y CONFIG_GENERIC_ISA_DMA=y CONFIG_GENERIC_IOMAP=y CONFIG_GENERIC_BUG=y CONFIG_GENERIC_HWEIGHT=y # CONFIG_GENERIC_GPIO is not set CONFIG_ARCH_MAY_HAVE_PC_FDC=y CONFIG_DMI=y # CONFIG_RWSEM_GENERIC_SPINLOCK is not set CONFIG_RWSEM_XCHGADD_ALGORITHM=y # CONFIG_ARCH_HAS_ILOG2_U32 is not set # CONFIG_ARCH_HAS_ILOG2_U64 is not set CONFIG_GENERIC_CALIBRATE_DELAY=y # CONFIG_GENERIC_TIME_VSYSCALL is not set # CONFIG_HAVE_SETUP_PER_CPU_AREA is not set CONFIG_ARCH_HIBERNATION_POSSIBLE=y CONFIG_ARCH_SUSPEND_POSSIBLE=y # CONFIG_ZONE_DMA32 is not set CONFIG_ARCH_POPULATES_NODE_MAP=y # CONFIG_AUDIT_ARCH is not set CONFIG_ARCH_SUPPORTS_AOUT=y CONFIG_GENERIC_HARDIRQS=y CONFIG_GENERIC_IRQ_PROBE=y CONFIG_X86_BIOS_REBOOT=y CONFIG_KTIME_SCALAR=y CONFIG_DEFCONFIG_LIST=/lib/modules/$UNAME_RELEASE/.config # # General setup # CONFIG_EXPERIMENTAL=y CONFIG_BROKEN_ON_SMP=y CONFIG_LOCK_KERNEL=y CONFIG_INIT_ENV_ARG_LIMIT=32 CONFIG_LOCALVERSION= CONFIG_LOCALVERSION_AUTO=y CONFIG_SWAP=y # CONFIG_SYSVIPC is not set # CONFIG_POSIX_MQUEUE is not set # CONFIG_BSD_PROCESS_ACCT is not set # CONFIG_TASKSTATS is not set # CONFIG_AUDIT is not set CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_LOG_BUF_SHIFT=17 # CONFIG_CGROUPS is not set CONFIG_FAIR_GROUP_SCHED=y CONFIG_FAIR_USER_SCHED=y # CONFIG_FAIR_CGROUP_SCHED is not set # CONFIG_SYSFS_DEPRECATED is not set # CONFIG_RELAY is not set CONFIG_NAMESPACES=y # CONFIG_UTS_NS is not set # CONFIG_USER_NS is not set # CONFIG_PID_NS is not set # CONFIG_BLK_DEV_INITRD is not set CONFIG_CC_OPTIMIZE_FOR_SIZE=y CONFIG_SYSCTL=y # CONFIG_EMBEDDED is not set CONFIG_UID16=y CONFIG_SYSCTL_SYSCALL=y CONFIG_KALLSYMS=y CONFIG_KALLSYMS_ALL=y # CONFIG_KALLSYMS_EXTRA_PASS is not set CONFIG_HOTPLUG=y CONFIG_PRINTK=y CONFIG_BUG=y CONFIG_ELF_CORE=y CONFIG_BASE_FULL=y CONFIG_FUTEX=y CONFIG_ANON_INODES=y CONFIG_EPOLL=y CONFIG_SIGNALFD=y CONFIG_TIMERFD=y CONFIG_EVENTFD=y CONFIG_SHMEM=y CONFIG_VM_EVENT_COUNTERS=y CONFIG_SLUB_DEBUG=y # CONFIG_SLAB is not set CONFIG_SLUB=y # CONFIG_SLOB is not set # CONFIG_PROFILING is not set # CONFIG_MARKERS is not set CONFIG_HAVE_OPROFILE=y CONFIG_HAVE_KPROBES=y CONFIG_PROC_PAGE_MONITOR=y CONFIG_SLABINFO=y CONFIG_RT_MUTEXES=y # CONFIG_TINY_SHMEM is not set CONFIG_BASE_SMALL=0 # CONFIG_MODULES is not set CONFIG_BLOCK=y # CONFIG_LBD is not set # CONFIG_BLK_DEV_IO_TRACE is not set # CONFIG_LSF is not set CONFIG_BLK_DEV_BSG=y # # IO Schedulers # CONFIG_IOSCHED_NOOP=y # CONFIG_IOSCHED_AS is not set # CONFIG_IOSCHED_DEADLINE is not set CONFIG_IOSCHED_CFQ=y # CONFIG_DEFAULT_AS is not set # CONFIG_DEFAULT_DEADLINE is not set CONFIG_DEFAULT_CFQ=y # CONFIG_DEFAULT_NOOP is not set CONFIG_DEFAULT_IOSCHED=cfq # CONFIG_CLASSIC_RCU is not set CONFIG_PREEMPT_RCU=y # # Processor type and features # CONFIG_TICK_ONESHOT=y CONFIG_NO_HZ=y CONFIG_HIGH_RES_TIMERS=y CONFIG_GENERIC_CLOCKEVENTS_BUILD=y # CONFIG_SMP is not set CONFIG_X86_PC=y # CONFIG_X86_ELAN is not set # CONFIG_X86_VOYAGER is not set # CONFIG_X86_NUMAQ is not set # CONFIG_X86_SUMMIT is not set # CONFIG_X86_BIGSMP is not set #
Re: v2.6.24-mm1 lockdep.c warning
On Mon, 04 Feb 2008 20:26:00 -0400
Kevin Winchester [EMAIL PROTECTED] wrote:
Found this in my dmesg:
[ 10.671500] [ cut here ]
[ 10.671500] WARNING: at kernel/lockdep.c:2037
trace_hardirqs_on+0xba/0x113()
[ 10.671500] Pid: 0, comm: swapper Not tainted 2.6.24-mm1 #2
[ 10.671500] [c011a54f] warn_on_slowpath+0x3c/0x4c
[ 10.671500] [c01335a0] ? check_usage_forwards+0x19/0x3b
[ 10.671500] [c013376d] ? mark_lock+0x1ab/0x3ae
[ 10.671500] [c026c84d] ? ata_hsm_qc_complete+0xbc/0xc2
[ 10.671500] [c03495eb] ? _spin_unlock_irq+0x22/0x42
[ 10.671500] [c0133b0e] trace_hardirqs_on+0xba/0x113
[ 10.671500] [c03495eb] _spin_unlock_irq+0x22/0x42
[ 10.671500] [c011103d] hpet_rtc_interrupt+0xe8/0x299
[ 10.671500] [c0139547] handle_IRQ_event+0x1a/0x46
[ 10.671500] [c013a359] handle_edge_irq+0xa6/0x102
[ 10.671500] [c013a2b3] ? handle_edge_irq+0x0/0x102
[ 10.671500] [c0106070] do_IRQ+0x87/0xb0
[ 10.671500] [c010470a] common_interrupt+0x2e/0x34
[ 10.671500] [c0102974] ? default_idle+0x45/0x72
[ 10.671500] [c010292f] ? default_idle+0x0/0x72
[ 10.671500] [c01028ff] cpu_idle+0x73/0xa3
[ 10.671500] [c033fcd1] rest_init+0x61/0x63
[ 10.671500] ===
[ 10.671500] ---[ end trace e5cdd42f557be0f0 ]---
yup, I hit that too. It looks like Ingo has deided to merge the
below into mainline. I'll put it in the hot-fixes directory.
From: Andrew Morton [EMAIL PROTECTED]
Signed-off-by: Andrew Morton [EMAIL PROTECTED]
---
include/asm-generic/rtc.h | 11 +++
1 file changed, 7 insertions(+), 4 deletions(-)
diff -puN include/linux/rtc.h~hpet-borkage-fix include/linux/rtc.h
diff -puN include/asm-generic/rtc.h~hpet-borkage-fix include/asm-generic/rtc.h
--- a/include/asm-generic/rtc.h~hpet-borkage-fix
+++ a/include/asm-generic/rtc.h
@@ -35,10 +35,11 @@
static inline unsigned char rtc_is_updating(void)
{
unsigned char uip;
+ unsigned long flags;
- spin_lock_irq(rtc_lock);
+ spin_lock_irqsave(rtc_lock, flags);
uip = (CMOS_READ(RTC_FREQ_SELECT) RTC_UIP);
- spin_unlock_irq(rtc_lock);
+ spin_unlock_irqrestore(rtc_lock, flags);
return uip;
}
@@ -46,6 +47,8 @@ static inline unsigned int get_rtc_time(
{
unsigned long uip_watchdog = jiffies;
unsigned char ctrl;
+ unsigned long flags;
+
#ifdef CONFIG_MACH_DECSTATION
unsigned int real_year;
#endif
@@ -72,7 +75,7 @@ static inline unsigned int get_rtc_time(
* RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
* by the RTC when initially set to a non-zero value.
*/
- spin_lock_irq(rtc_lock);
+ spin_lock_irqsave(rtc_lock, flags);
time-tm_sec = CMOS_READ(RTC_SECONDS);
time-tm_min = CMOS_READ(RTC_MINUTES);
time-tm_hour = CMOS_READ(RTC_HOURS);
@@ -83,7 +86,7 @@ static inline unsigned int get_rtc_time(
real_year = CMOS_READ(RTC_DEC_YEAR);
#endif
ctrl = CMOS_READ(RTC_CONTROL);
- spin_unlock_irq(rtc_lock);
+ spin_unlock_irqrestore(rtc_lock, flags);
if (!(ctrl RTC_DM_BINARY) || RTC_ALWAYS_BCD)
{
_
--
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