David Gibson wrote:
Hrm. Ok. I am truly baffled. Well, below is a revised debug patch
which I hope will shed some sort of light on things. I do also notice
Thanks for the debug patch. I have attached the collected information.
from your full log that it looks like the bug is happening shortly
after we start userspace. So it may be differences in my userspace
set up that meant I haven't been able to reproduce it. I'll have
another look at that when I get a chance.
Let me know if you need access to the system on which i can recreate the
bug. I can make that system available for you to debug this issue.
Thanks
-Sachin
--
---------------------------------
Sachin Sant
IBM Linux Technology Center
India Systems and Technology Labs
Bangalore, India
---------------------------------
------------[ cut here ]------------
kernel BUG at mm/mmap.c:2142!
cpu 0x3: Vector: 700 (Program Check) at [c0000000fae2b7e0]
pc: c0000000001510d0: .exit_mmap+0x1dc/0x204
lr: c0000000001510c0: .exit_mmap+0x1cc/0x204
sp: c0000000fae2ba60
msr: 8000000000029032
current = 0xc0000000fad98be0
paca = 0xc000000000bb2c00
pid = 84, comm = cat
kernel BUG at mm/mmap.c:2142!
enter ? for help
[c0000000fae2bb10] c000000000093e28 .mmput+0x54/0x164
[c0000000fae2bba0] c000000000099034 .exit_mm+0x17c/0x1a0
[c0000000fae2bc50] c00000000009b414 .do_exit+0x248/0x784
[c0000000fae2bd30] c00000000009ba04 .do_group_exit+0xb4/0xe8
[c0000000fae2bdc0] c00000000009ba4c .SyS_exit_group+0x14/0x28
[c0000000fae2be30] c0000000000085b4 syscall_exit+0x0/0x40
--- Exception: c01 (System Call) at 00000fff9604ff40
SP (fffed84bae0) is in userspace
3:mon> dl
<4>Crash kernel location must be 0x2000000
<6>Reserving 256MB of memory at 32MB for crashkernel (System RAM: 4096MB)
<6>Using pSeries machine description
<7>Page orders: linear mapping = 24, virtual = 16, io = 12
<6>Using 1TB segments
<4>Found initrd at 0xc0000000034d0000:0xc000000003cf89c1
<6>bootconsole [udbg0] enabled
<6>Partition configured for 4 cpus.
<6>CPU maps initialized for 2 threads per core
<7> (thread shift is 1)
<4>Starting Linux PPC64 #6 SMP Tue Nov 17 12:51:36 IST 2009
<4>-----------------------------------------------------
<4>ppc64_pft_size = 0x1a
<4>physicalMemorySize = 0x100000000
<4>htab_hash_mask = 0x7ffff
<4>-----------------------------------------------------
<6>Initializing cgroup subsys cpuset
<6>Initializing cgroup subsys cpu
<5>Linux version 2.6.32-rc7-next-20091116 (root@llm62) (gcc version 4.3.2 [gcc-4_3-branch revision 141291] (SUSE Linux) ) #6 SMP Tue Nov 17 12:51:36 IST 2009
<4>[boot]0012 Setup Arch
<7>Node 0 Memory:
<7>Node 1 Memory: 0x0-0x100000000
<4>EEH: No capable adapters found
<6>PPC64 nvram contains 15360 bytes
<7>Using shared processor idle loop
<4>Zone PFN ranges:
<4> DMA 0x00000000 -> 0x00010000
<4> Normal 0x00010000 -> 0x00010000
<4>Movable zone start PFN for each node
<4>early_node_map[1] active PFN ranges
<4> 1: 0x00000000 -> 0x00010000
<4>Could not find start_pfn for node 0
<7>On node 0 totalpages: 0
<7>On node 1 totalpages: 65536
<7> DMA zone: 56 pages used for memmap
<7> DMA zone: 0 pages reserved
<7> DMA zone: 65480 pages, LIFO batch:1
<4>[boot]0015 Setup Done
<6>PERCPU: Embedded 2 pages/cpu @c000000000f00000 s89000 r0 d42072 u262144
<6>pcpu-alloc: s89000 r0 d42072 u262144 alloc=1*1048576
<6>pcpu-alloc: [0] 0 1 2 3
<4>Built 2 zonelists in Node order, mobility grouping on. Total pages: 65480
<4>Policy zone: DMA
<5>Kernel command line: root=/dev/sda5 sysrq=1 insmod=sym53c8xx insmod=ipr crashkernel=512M-:256M xmon=on
<6>PID hash table entries: 4096 (order: -1, 32768 bytes)
<4>freeing bootmem node 1
<6>Memory: 3899712k/4194304k available (9216k kernel code, 294592k reserved, 2688k data, 2370k bss, 640k init)
<6>Hierarchical RCU implementation.
<6>RCU-based detection of stalled CPUs is enabled.
<6>NR_IRQS:512 nr_irqs:512
<4>[boot]0020 XICS Init
<4>[boot]0021 XICS Done
<7>pic: no ISA interrupt controller
<7>time_init: decrementer frequency = 512.000000 MHz
<7>time_init: processor frequency = 4704.000000 MHz
<6>clocksource: timebase mult[7d0000] shift[22] registered
<7>clockevent: decrementer mult[83126e97] shift[32] cpu[0]
<4>Console: colour dummy device 80x25
<6>console [hvc0] enabled, bootconsole disabled
<6>allocated 2621440 bytes of page_cgroup
<6>please try 'cgroup_disable=memory' option if you don't want memory cgroups
<6>Security Framework initialized
<6>SELinux: Disabled at boot.
<6>Dentry cache hash table entries: 524288 (order: 6, 4194304 bytes)
<6>Inode-cache hash table entries: 262144 (order: 5, 2097152 bytes)
<4>Mount-cache hash table entries: 4096
<6>Initializing cgroup subsys ns
<6>Initializing cgroup subsys cpuacct
<6>Initializing cgroup subsys memory
<6>Initializing cgroup subsys devices
<6>Initializing cgroup subsys freezer
<7> alloc irq_desc for 16 on node 0
<7> alloc kstat_irqs on node 0
<7>irq: irq 2 on host null mapped to virtual irq 16
<7>clockevent: decrementer mult[83126e97] shift[32] cpu[1]
<4>Processor 1 found.
<7>clockevent: decrementer mult[83126e97] shift[32] cpu[2]
<4>Processor 2 found.
<7>clockevent: decrementer mult[83126e97] shift[32] cpu[3]
<4>Processor 3 found.
<6>Brought up 4 CPUs
<7>Node 0 CPUs: 0-3
<7>Node 1 CPUs:
<7>CPU0 attaching sched-domain:
<7> domain 0: span 0-1 level SIBLING
<7> groups: 0 (cpu_power = 589) 1 (cpu_power = 589)
<7> domain 1: span 0-3 level CPU
<7> groups: 0-1 (cpu_power = 1178) 2-3 (cpu_power = 1178)
<7>CPU1 attaching sched-domain:
<7> domain 0: span 0-1 level SIBLING
<7> groups: 1 (cpu_power = 589) 0 (cpu_power = 589)
<7> domain 1: span 0-3 level CPU
<7> groups: 0-1 (cpu_power = 1178) 2-3 (cpu_power = 1178)
<7>CPU2 attaching sched-domain:
<7> domain 0: span 2-3 level SIBLING
<7> groups: 2 (cpu_power = 589) 3 (cpu_power = 589)
<7> domain 1: span 0-3 level CPU
<7> groups: 2-3 (cpu_power = 1178) 0-1 (cpu_power = 1178)
<7>CPU3 attaching sched-domain:
<7> domain 0: span 2-3 level SIBLING
<7> groups: 3 (cpu_power = 589) 2 (cpu_power = 589)
<7> domain 1: span 0-3 level CPU
<7> groups: 2-3 (cpu_power = 1178) 0-1 (cpu_power = 1178)
<6>NET: Registered protocol family 16
<6>IBM eBus Device Driver
<6>POWER6 performance monitor hardware support registered
<6>PCI: Probing PCI hardware
<7>PCI: Probing PCI hardware done
<4>bio: create slab <bio-0> at 0
<6>vgaarb: loaded
<6>usbcore: registered new interface driver usbfs
<6>usbcore: registered new interface driver hub
<6>usbcore: registered new device driver usb
<6>Switching to clocksource timebase
<6>NET: Registered protocol family 2
<6>IP route cache hash table entries: 32768 (order: 2, 262144 bytes)
<6>TCP established hash table entries: 131072 (order: 5, 2097152 bytes)
<6>TCP bind hash table entries: 65536 (order: 4, 1048576 bytes)
<6>TCP: Hash tables configured (established 131072 bind 65536)
<6>TCP reno registered
<6>UDP hash table entries: 2048 (order: 0, 65536 bytes)
<6>UDP-Lite hash table entries: 2048 (order: 0, 65536 bytes)
<6>NET: Registered protocol family 1
<7>PCI: CLS 0 bytes, default 128
<6>Unpacking initramfs...
<7>RTAS daemon started
<7> alloc irq_desc for 17 on node 0
<7> alloc kstat_irqs on node 0
<7>irq: irq 655360 on host null mapped to virtual irq 17
<7> alloc irq_desc for 18 on node 0
<7> alloc kstat_irqs on node 0
<7>irq: irq 655362 on host null mapped to virtual irq 18
<6>IOMMU table initialized, virtual merging enabled
<7> alloc irq_desc for 19 on node 0
<7> alloc kstat_irqs on node 0
<7>irq: irq 589825 on host null mapped to virtual irq 19
<6>audit: initializing netlink socket (disabled)
<5>type=2000 audit(1258442853.220:1): initialized
<1>rcu-torture:--- Start of test: nreaders=8 nfakewriters=4 stat_interval=0 verbose=0 test_no_idle_hz=0 shuffle_interval=3 stutter=5 irqreader=1
<6>HugeTLB registered 16 MB page size, pre-allocated 0 pages
<6>HugeTLB registered 16 GB page size, pre-allocated 0 pages
<5>VFS: Disk quotas dquot_6.5.2
<4>Dquot-cache hash table entries: 8192 (order 0, 65536 bytes)
<6>msgmni has been set to 7616
<6>alg: No test for stdrng (krng)
<6>Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
<6>io scheduler noop registered
<6>io scheduler deadline registered
<6>io scheduler cfq registered (default)
<6>pci_hotplug: PCI Hot Plug PCI Core version: 0.5
<6>pciehp: PCI Express Hot Plug Controller Driver version: 0.4
<6>rpaphp: RPA HOT Plug PCI Controller Driver version: 0.1
<7>vio_register_driver: driver hvc_console registering
<7>HVSI: registered 0 devices
<6>Generic RTC Driver v1.07
<6>Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
<6>pmac_zilog: 0.6 (Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>)
<6>input: Macintosh mouse button emulation as /devices/virtual/input/input0
<6>Uniform Multi-Platform E-IDE driver
<6>ide-gd driver 1.18
<6>ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
<6>ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
<6>mice: PS/2 mouse device common for all mice
<6>EDAC MC: Ver: 2.1.0 Nov 16 2009
<6>usbcore: registered new interface driver hiddev
<6>usbcore: registered new interface driver usbhid
<6>usbhid: USB HID core driver
<6>TCP cubic registered
<6>NET: Registered protocol family 15
<4>registered taskstats version 1
<4>Freeing unused kernel memory: 640k freed
<4>__pte_alloc() -> mm c0000000fa9f0180 addr 0xffffffffff2 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f0180 addr 0x419cacb8 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f0180 addr 0xfff886daf30 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f0580 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f0580 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f0580 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f0980 addr 0xfffffffffed nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f0580 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f0580 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f0580 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f0980 addr 0xfffd45b0000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f0980 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f0980 addr 0x10029a80 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f0980 addr 0xfff7dd5af30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f0980 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f0980 addr 0xfff70000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f0980 addr 0xfffd0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f0d80 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f0d80 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f0d80 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f1180 addr 0xfffffffffed nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f0d80 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f0d80 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f0d80 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f1180 addr 0xfffe4880000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f1180 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f1180 addr 0x10029a80 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f1180 addr 0xfff97f3af30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f1180 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f1180 addr 0xfff90000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f1180 addr 0xfffe0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f1580 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f1580 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f1580 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f1980 addr 0xfffffffffed nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f1580 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f1580 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f1580 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f1980 addr 0xfffd1700000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f1980 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f1980 addr 0x10029a80 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f1980 addr 0xfff9d31af30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f1980 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f1980 addr 0xfff90000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f1980 addr 0xfffd0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f1d80 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f1d80 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f1d80 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f2180 addr 0xfffffffffed nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f1d80 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f1d80 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f1d80 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f2180 addr 0xfffdad00000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f2180 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f2180 addr 0x10017830 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f2180 addr 0xfff93bfaf30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f2180 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f2180 addr 0xfff90000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f2180 addr 0xfffd0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f2580 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f2580 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f2580 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f2980 addr 0xfffffffffed nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f2580 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f2580 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f2580 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f2980 addr 0xfffd9b10000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f2980 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f2980 addr 0x10017830 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f2980 addr 0xfff9a09af30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f2980 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f2980 addr 0xfff90000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f2980 addr 0xfffd0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f2d80 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f2d80 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f2d80 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f3180 addr 0xfffffffffed nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f2d80 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f2d80 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f2d80 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f3180 addr 0xfffc0dc0000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f3180 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f3180 addr 0x10017830 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f3180 addr 0xfff7bb1af30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f3180 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f3180 addr 0xfff70000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f3180 addr 0xfffc0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f3580 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f3580 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f3580 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f3980 addr 0xfffffffffed nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f3580 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f3580 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f3580 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f3980 addr 0xfffe80f0000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f3980 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f3980 addr 0x10017830 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f3980 addr 0xfff9a73af30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f3980 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f3980 addr 0xfff90000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f3980 addr 0xfffe0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f3d80 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f3d80 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f3d80 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f4180 addr 0xfffffffffed nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f3d80 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f3d80 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f3d80 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f4180 addr 0xfffc0650000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f4180 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f4180 addr 0x10017830 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f4180 addr 0xfffa335af30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f4180 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f4180 addr 0xfffa0000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f4180 addr 0xfffc0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f4580 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f4580 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f4580 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f4980 addr 0xfffffffffed nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f4580 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f4580 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f4580 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f4980 addr 0xfffe5970000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f4980 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f4980 addr 0x10017830 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f4980 addr 0xfff812daf30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f4980 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f4980 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f4980 addr 0xfffe0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f4d80 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f4d80 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f4d80 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f5180 addr 0xfffffffffed nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f4d80 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f4d80 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f4d80 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f5180 addr 0xfffd0950000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f5180 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f5180 addr 0x10017830 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f5180 addr 0xfff9865af30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f5180 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f5180 addr 0xfff90000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f5180 addr 0xfffd0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f5580 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f5580 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f5580 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f5980 addr 0xfffffffffed nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f5580 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f5580 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f5580 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f5980 addr 0xfffea6f0000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f5980 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f5980 addr 0x10017830 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f5980 addr 0xfff9575af30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f5980 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f5980 addr 0xfff90000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f5980 addr 0xfffe0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f5d80 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f5d80 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f5d80 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f6180 addr 0xfffffffffed nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f5d80 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f5d80 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f5d80 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f6180 addr 0xfffe6650000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f6180 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f6180 addr 0x10018960 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f6180 addr 0xfffaf91af30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f6180 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f6180 addr 0xfffa0000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f6180 addr 0xfffe0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f6580 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f6580 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f6580 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f6980 addr 0xfffffffffed nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f6580 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f6580 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f6580 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f6980 addr 0xfffcbcf0000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f6980 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f6980 addr 0x10018960 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f6980 addr 0xfff9589af30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f6980 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f6980 addr 0xfff90000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f6980 addr 0xfffc0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f6d80 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f6d80 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f6d80 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f7180 addr 0xffffffffff0 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f6d80 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f6d80 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f6d80 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f7180 addr 0xfffe0660000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f7180 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f7180 addr 0x1001be48 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f7180 addr 0xfffb65faf30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f7180 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f7180 addr 0xfffb0000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f7180 addr 0xfffe0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f7580 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f7580 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f7580 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f7980 addr 0xffffffffff0 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f7580 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f7580 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f7580 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f7980 addr 0xfffec320000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f7980 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f7980 addr 0x1001be48 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f7980 addr 0xfffa1ebaf30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f7980 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f7980 addr 0xfffa0000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f7980 addr 0xfffe0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f7d80 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f7d80 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f7d80 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f8180 addr 0xffffffffff0 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f7d80 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f7d80 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f7d80 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f8180 addr 0xfffcdb20000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f8180 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f8180 addr 0x1001be48 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f8180 addr 0xfff9a19af30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f8180 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f8180 addr 0xfff90000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f8180 addr 0xfffc0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f8580 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f8580 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f8580 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f8980 addr 0xffffffffff0 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f8580 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f8580 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f8580 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f8980 addr 0xfffcc8a0000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f8980 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f8980 addr 0x1001be48 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f8980 addr 0xfffa7dbaf30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f8980 addr 0x10000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f8980 addr 0xfffa0000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f8980 addr 0xfffc0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f8d80 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f8d80 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f8d80 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f9180 addr 0x419b0000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f9180 addr 0xfff88370000 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f9180 addr 0xffff03d0000 nr_ptes 3
<4>__pte_alloc() -> mm c0000000fa9f9580 addr 0xfffffffffef nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f9180 addr 0x40000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f9180 addr 0xfff80000000 nr_ptes 1
<4>free_pte_range() -> mm c0000000fa9f9180 addr 0xffff0000000 nr_ptes 0
<4>__pte_alloc() -> mm c0000000fa9f9580 addr 0xfffed840000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f9580 addr 0xffff0000000 nr_ptes 1
<4>__pte_alloc() -> mm c0000000fa9f9580 addr 0x1001bae0 nr_ptes 2
<4>__pte_alloc() -> mm c0000000fa9f9580 addr 0xfff9619af30 nr_ptes 3
<4>free_pte_range() -> mm c0000000fa9f9580 addr 0xfff90000000 nr_ptes 2
<4>free_pte_range() -> mm c0000000fa9f9580 addr 0xfffe0000000 nr_ptes 1
<7>exit_mmap(): mm c0000000fa9f9580 nr_ptes 1
<4>exit_mmap(): mm c0000000fa9f9580 nr_ptes 1 current c0000000fad98be0 pid 84 comm "cat"
<0>------------[ cut here ]------------
<2>kernel BUG at mm/mmap.c:2142!
3:mon>
