[Bug 42980] New: BUG in gfn_to_pfn_prot

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=42980

           Summary: BUG in gfn_to_pfn_prot
           Product: Virtualization
           Version: unspecified
    Kernel Version: 3.2.2-gentoo
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: blocking
          Priority: P1
         Component: kvm
        AssignedTo: virtualization_kvm@kernel-bugs.osdl.org
        ReportedBy: luke-jr+linuxbugs@utopios.org
        Regression: No


BUG: unable to handle kernel paging request at ffff87ffffffffff
IP: [<ffffffffa03311b7>] __direct_map.clone.86+0xa7/0x240 [kvm]
PGD 0 
Oops: 0000 [#1] PREEMPT SMP 
CPU 0 
Modules linked in: tun cdc_ether usbnet cdc_acm fuse usbmon pci_stub kvm_intel
kvm netconsole configfs cfq_iosched blk_cgroup snd_seq_oss snd_seq_midi_event
snd_seq bridge snd_seq_device ipv6 snd_pcm_oss snd_mixer_oss stp llc coretemp
hwmon usblp snd_hda_codec_hdmi snd_hda_codec_realtek usb_storage ftdi_sio
usbserial usbhid hid snd_hda_intel i915 snd_hda_codec drm_kms_helper snd_hwdep
drm snd_pcm firewire_ohci tpm_tis 8139too tpm firewire_core xhci_hcd
i2c_algo_bit snd_timer 8250_pci 8250_pnp ehci_hcd usbcore snd e1000e 8250
tpm_bios crc_itu_t serial_core snd_page_alloc sg rtc_cmos psmouse i2c_i801 mii
usb_common video evdev ata_generic pata_acpi button

Pid: 9995, comm: qemu-system-x86 Not tainted 3.2.2-gentoo #1                 
/DQ67SW
RIP: 0010:[<ffffffffa03311b7>]  [<ffffffffa03311b7>]
__direct_map.clone.86+0xa7/0x240 [kvm]
RSP: 0018:ffff88010bc39b08  EFLAGS: 00010293
RAX: ffff87ffffffffff RBX: 000ffffffffff000 RCX: 0000000000000027
RDX: 0000000029b55000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: ffff88010bc39bb8 R08: ffff87ffffffffff R09: 0000000000113661
R10: 00000000c174f000 R11: 080000000000d974 R12: ffff880000000000
R13: ffff8803b7e6c240 R14: 0000000000000001 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88043e200000(0063) knlGS:00000000f5ffab70
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffff87ffffffffff CR3: 00000001027f1000 CR4: 00000000000426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process qemu-system-x86 (pid: 9995, threadinfo ffff88010bc38000, task
ffff88000bc154f0)
Stack:
 ffff8803b7e6c240 ffff88010bc39bf0 0000000000000000 0000000000029b55
 ffff88010bc39b38 ffffffffa031ae14 00ff88010bc39bb8 0000000000000000
 0000000000113661 0000000000029b55 0000000029b55000 ffffffffffffffff
Call Trace:
 [<ffffffffa031ae14>] ? gfn_to_pfn_prot+0x14/0x20 [kvm]
 [<ffffffffa03316c0>] tdp_page_fault+0x1a0/0x1e0 [kvm]
 [<ffffffffa032d2e2>] kvm_mmu_page_fault+0x32/0xb0 [kvm]
 [<ffffffffa0362bec>] handle_ept_violation+0x4c/0xd0 [kvm_intel]
 [<ffffffffa0368ff4>] vmx_handle_exit+0xb4/0x6f0 [kvm_intel]
 [<ffffffff8103afad>] ? sub_preempt_count+0x9d/0xd0
 [<ffffffffa0329e23>] kvm_arch_vcpu_ioctl_run+0x473/0xf40 [kvm]
 [<ffffffff8103afad>] ? sub_preempt_count+0x9d/0xd0
 [<ffffffffa03197c2>] kvm_vcpu_ioctl+0x392/0x5e0 [kvm]
 [<ffffffffa031a3ed>] ? kvm_vm_ioctl+0x9d/0x410 [kvm]
 [<ffffffff81315529>] ? sys_sendto+0x119/0x140
 [<ffffffffa0319a65>] kvm_vcpu_compat_ioctl+0x55/0x100 [kvm]
 [<ffffffff810f81df>] ? fget_light+0x8f/0xf0
 [<ffffffff8113ee2e>] compat_sys_ioctl+0x8e/0xff0
 [<ffffffff8105df3c>] ? posix_ktime_get_ts+0xc/0x10
 [<ffffffff8105f190>] ? sys_clock_gettime+0x90/0xb0
 [<ffffffff810860db>] ? compat_sys_clock_gettime+0x7b/0x90
 [<ffffffff813c34c9>] sysenter_dispatch+0x7/0x27
Code: 89 d0 8d 4c ff 0c 4d 89 e0 48 d3 e8 4c 03 45 a8 25 ff 01 00 00 41 39 f6
89 45 bc 89 c0 49 8d 04 c0 48 89 45 b0 0f 84 e1 00 00 00 <4c> 8b 00 41 f6 c0 01
74 40 4c 8b 0d 89 80 01 00 4d 89 c2 4d 21 
RIP  [<ffffffffa03311b7>] __direct_map.clone.86+0xa7/0x240 [kvm]
 RSP <ffff88010bc39b08>
CR2: ffff87ffffffffff
---[ end trace 4db76b33c09285f5 ]---
note: qemu-system-x86[9995] exited with preempt_count 1
usb 2-1.2: USB disconnect, device number 77
INFO: rcu_preempt detected stall on CPU 3 (t=60000 jiffies)
Pid: 3610, comm: kwin Tainted: G      D      3.2.2-gentoo #1
Call Trace:
 <IRQ>  [<ffffffff810a2949>] __rcu_pending+0x1d9/0x420
 [<ffffffff8106f920>] ? tick_nohz_handler+0xe0/0xe0
 [<ffffffff810a2f62>] rcu_check_callbacks+0x122/0x1a0
 [<ffffffff810504c3>] update_process_times+0x43/0x80
 [<ffffffff8106f97b>] tick_sched_timer+0x5b/0xa0
 [<ffffffff81063873>] __run_hrtimer.clone.30+0x63/0x140
 [<ffffffff810641af>] hrtimer_interrupt+0xdf/0x210
 [<ffffffff8101d643>] smp_apic_timer_interrupt+0x63/0xa0
 [<ffffffff813c2b8b>] apic_timer_interrupt+0x6b/0x70
 <EOI>  [<ffffffff810b69a2>] ? __pagevec_free+0x22/0x30
 [<ffffffff813c1862>] ? _raw_spin_lock+0x32/0x40
 [<ffffffff813c1846>] ? _raw_spin_lock+0x16/0x40
 [<ffffffffa0319c3c>] kvm_mmu_notifier_invalidate_page+0x3c/0x90 [kvm]
 [<ffffffff810e31c8>] __mmu_notifier_invalidate_page+0x48/0x60
 [<ffffffff810d6ce5>] try_to_unmap_one+0x3c5/0x3f0
 [<ffffffff810d762d>] try_to_unmap_anon+0x9d/0xe0
 [<ffffffff810d7715>] try_to_unmap+0x55/0x70
 [<ffffffff810e8d21>] migrate_pages+0x2f1/0x4d0
 [<ffffffff810e1ec0>] ? suitable_migration_target+0x50/0x50
 [<ffffffff810e271f>] compact_zone+0x44f/0x7a0
 [<ffffffff810e2c07>] try_to_compact_pages+0x197/0x1f0
 [<ffffffff810b7026>] __alloc_pages_direct_compact+0xc6/0x1c0
 [<ffffffff810b74f9>] __alloc_pages_nodemask+0x3d9/0x7a0
 [<ffffffff813c14b0>] ? _raw_spin_unlock+0x10/0x40
 [<ffffffff810cd2fb>] ? handle_pte_fault+0x3bb/0x9f0
 [<ffffffff810ec831>] do_huge_pmd_anonymous_page+0x131/0x350
 [<ffffffff810cdcae>] handle_mm_fault+0x21e/0x300
 [<ffffffff81027dad>] do_page_fault+0x12d/0x430
 [<ffffffff810d3854>] ? do_mmap_pgoff+0x344/0x380
 [<ffffffff813c1cef>] page_fault+0x1f/0x30

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