KASAN: use-after-free Read in l2tp_session_queue_purge

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: 09eb2ba5 ANDROID: x86_64_cuttlefish_defconfig: Enable lz4 ..
git tree: android-4.9
console output: https://syzkaller.appspot.com/x/log.txt?x=1095b25a400000
kernel config: https://syzkaller.appspot.com/x/.config?x=59246eb7b3f7dd72
dashboard link: https://syzkaller.appspot.com/bug?extid=119b4a3b048ec1629214
compiler: gcc (GCC) 8.0.1 20180413 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=103abbbc400000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11d97dfe400000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+119b4a...@syzkaller.appspotmail.com

==================================================================
BUG: KASAN: use-after-free in l2tp_session_queue_purge+0xf4/0x100
net/l2tp/l2tp_core.c:917
Read of size 4 at addr ffff8801d4234a00 by task syz-executor241/5487

CPU: 0 PID: 5487 Comm: syz-executor241 Not tainted 4.9.124-g09eb2ba #83
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
ffff8801d39e7ca8 ffffffff81eb95e9 ffffea0007508d00 ffff8801d4234a00
0000000000000000 ffff8801d4234a00 0000000000000000 ffff8801d39e7ce0
ffffffff8156c35e ffff8801d4234a00 0000000000000004 0000000000000000
Call Trace:
[<ffffffff81eb95e9>] __dump_stack lib/dump_stack.c:15 [inline]
[<ffffffff81eb95e9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
[<ffffffff8156c35e>] print_address_description+0x6c/0x234
mm/kasan/report.c:256
[<ffffffff8156c768>] kasan_report_error mm/kasan/report.c:355 [inline]
[<ffffffff8156c768>] kasan_report.cold.6+0x242/0x2fe mm/kasan/report.c:412
[<ffffffff8153fad4>] __asan_report_load4_noabort+0x14/0x20
mm/kasan/report.c:432
[<ffffffff836c3694>] l2tp_session_queue_purge+0xf4/0x100
net/l2tp/l2tp_core.c:917
[<ffffffff836cf2eb>] pppol2tp_release+0x1fb/0x2e0 net/l2tp/l2tp_ppp.c:492
[<ffffffff83018357>] __sock_release+0xd7/0x260 net/socket.c:605
[<ffffffff830184f9>] sock_close+0x19/0x20 net/socket.c:1059
[<ffffffff8157ca73>] __fput+0x263/0x700 fs/file_table.c:208
[<ffffffff8157cf95>] ____fput+0x15/0x20 fs/file_table.c:244
[<ffffffff8119a66c>] task_work_run+0x10c/0x180 kernel/task_work.c:116
[<ffffffff8100559c>] tracehook_notify_resume include/linux/tracehook.h:191
[inline]
[<ffffffff8100559c>] exit_to_usermode_loop+0xfc/0x120
arch/x86/entry/common.c:161
[<ffffffff810064d4>] prepare_exit_to_usermode arch/x86/entry/common.c:191
[inline]
[<ffffffff810064d4>] syscall_return_slowpath arch/x86/entry/common.c:260
[inline]
[<ffffffff810064d4>] do_syscall_64+0x364/0x490 arch/x86/entry/common.c:287
[<ffffffff83a019d3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb

Allocated by task 5488:
save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
save_stack+0x43/0xd0 mm/kasan/kasan.c:505
set_track mm/kasan/kasan.c:517 [inline]
kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:609
__kmalloc+0x11d/0x300 mm/slub.c:3741
kmalloc include/linux/slab.h:495 [inline]
kzalloc include/linux/slab.h:636 [inline]
l2tp_session_create+0x38/0x16f0 net/l2tp/l2tp_core.c:1843
pppol2tp_connect+0x10d7/0x18f0 net/l2tp/l2tp_ppp.c:718
SYSC_connect+0x1b8/0x300 net/socket.c:1575
SyS_connect+0x24/0x30 net/socket.c:1556
do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
entry_SYSCALL_64_after_swapgs+0x5d/0xdb

Freed by task 5466:
save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
save_stack+0x43/0xd0 mm/kasan/kasan.c:505
set_track mm/kasan/kasan.c:517 [inline]
kasan_slab_free+0x72/0xc0 mm/kasan/kasan.c:582
slab_free_hook mm/slub.c:1355 [inline]
slab_free_freelist_hook mm/slub.c:1377 [inline]
slab_free mm/slub.c:2958 [inline]
kfree+0xfb/0x310 mm/slub.c:3878
l2tp_session_free+0x166/0x200 net/l2tp/l2tp_core.c:1770
l2tp_session_dec_refcount_1 net/l2tp/l2tp_core.h:297 [inline]
l2tp_tunnel_closeall+0x284/0x350 net/l2tp/l2tp_core.c:1373
l2tp_udp_encap_destroy+0x87/0xe0 net/l2tp/l2tp_core.c:1394
udpv6_destroy_sock+0xb1/0xd0 net/ipv6/udp.c:1336
sk_common_release+0x6d/0x300 net/core/sock.c:2727
udp_lib_close+0x15/0x20 include/net/udp.h:203
inet_release+0xff/0x1d0 net/ipv4/af_inet.c:434
inet6_release+0x50/0x70 net/ipv6/af_inet6.c:440
__sock_release+0xd7/0x260 net/socket.c:605
sock_close+0x19/0x20 net/socket.c:1059
__fput+0x263/0x700 fs/file_table.c:208
____fput+0x15/0x20 fs/file_table.c:244
task_work_run+0x10c/0x180 kernel/task_work.c:116
exit_task_work include/linux/task_work.h:21 [inline]
do_exit+0x9e1/0x27b0 kernel/exit.c:833
do_group_exit+0x111/0x340 kernel/exit.c:937
SYSC_exit_group kernel/exit.c:948 [inline]
SyS_exit_group+0x1d/0x20 kernel/exit.c:946
do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
entry_SYSCALL_64_after_swapgs+0x5d/0xdb

The buggy address belongs to the object at ffff8801d4234a00
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 0 bytes inside of
512-byte region [ffff8801d4234a00, ffff8801d4234c00)
The buggy address belongs to the page:
page:ffffea0007508d00 count:1 mapcount:0 mapping: (null) index:0x0
compound_mapcount: 0
flags: 0x8000000000004080(slab|head)
page dumped because: kasan: bad access detected

Memory state around the buggy address:
ffff8801d4234900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8801d4234980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
> ffff8801d4234a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8801d4234a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8801d4234b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================


---
This bug is generated by a bot. It may contain errors.
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[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: e5c5f1fa ANDROID: x86_64_cuttlefish_defconfig: Enable lz4 ..
git tree: android-4.4
console output: https://syzkaller.appspot.com/x/log.txt?x=13315761400000
kernel config: https://syzkaller.appspot.com/x/.config?x=b184b46991a54ded
dashboard link: https://syzkaller.appspot.com/bug?extid=351ddffddad72cfb8aa6

compiler: gcc (GCC) 8.0.1 20180413 (experimental)

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1717b56a400000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1368034a400000

IMPORTANT: if you fix the bug, please add the following tag to the commit:

Reported-by: syzbot+351ddf...@syzkaller.appspotmail.com

==================================================================
BUG: KASAN: use-after-free in l2tp_session_queue_purge+0xf4/0x100

net/l2tp/l2tp_core.c:830
Read of size 4 at addr ffff8800b41baf00 by task syz-executor921/3917

CPU: 0 PID: 3917 Comm: syz-executor921 Not tainted 4.4.152-ge5c5f1f #89

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011

0000000000000000 a707ab251500d5c5 ffff8801d24a78b0 ffffffff81e15fed
ffffea0002d06e80 ffff8800b41baf00 0000000000000000 ffff8800b41baf00
0000000000000000 ffff8801d24a78e8 ffffffff8151b489 ffff8800b41baf00
Call Trace:
[<ffffffff81e15fed>] __dump_stack lib/dump_stack.c:15 [inline]
[<ffffffff81e15fed>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
[<ffffffff8151b489>] print_address_description+0x6c/0x216
mm/kasan/report.c:252
[<ffffffff8151b7a8>] kasan_report_error mm/kasan/report.c:351 [inline]
[<ffffffff8151b7a8>] kasan_report.cold.7+0x175/0x2f7 mm/kasan/report.c:408
[<ffffffff814fe714>] __asan_report_load4_noabort+0x14/0x20
mm/kasan/report.c:428
[<ffffffff835a4b64>] l2tp_session_queue_purge+0xf4/0x100
net/l2tp/l2tp_core.c:830
[<ffffffff835b166f>] pppol2tp_release+0x1ff/0x310 net/l2tp/l2tp_ppp.c:509
[<ffffffff82f210c9>] __sock_release+0xd9/0x260 net/socket.c:592
[<ffffffff82f21269>] sock_close+0x19/0x20 net/socket.c:1050
[<ffffffff81528875>] __fput+0x235/0x6f0 fs/file_table.c:208
[<ffffffff81528db5>] ____fput+0x15/0x20 fs/file_table.c:244
[<ffffffff8118ee4f>] task_work_run+0x10f/0x190 kernel/task_work.c:115
[<ffffffff811382b5>] exit_task_work include/linux/task_work.h:21 [inline]
[<ffffffff811382b5>] do_exit+0x9e5/0x26b0 kernel/exit.c:755
[<ffffffff8113e1f1>] do_group_exit+0x111/0x330 kernel/exit.c:885
[<ffffffff811615ec>] get_signal+0x4ec/0x14b0 kernel/signal.c:2321
[<ffffffff8100df4b>] do_signal+0x8b/0x1d30 arch/x86/kernel/signal.c:712
[<ffffffff8100360a>] exit_to_usermode_loop+0x11a/0x160
arch/x86/entry/common.c:249
[<ffffffff81006363>] prepare_exit_to_usermode+0xe3/0x100
arch/x86/entry/common.c:284
[<ffffffff838cd108>] retint_user+0x8/0x3c

Allocated by task 3914:
[<ffffffff81034676>] save_stack_trace+0x26/0x50
arch/x86/kernel/stacktrace.c:63
[<ffffffff814fd7d3>] save_stack+0x43/0xd0 mm/kasan/kasan.c:512
[<ffffffff814fdab7>] set_track mm/kasan/kasan.c:524 [inline]
[<ffffffff814fdab7>] kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:616
[<ffffffff814fa1f4>] __kmalloc+0x124/0x310 mm/slub.c:3613
[<ffffffff835a9f79>] kmalloc include/linux/slab.h:481 [inline]
[<ffffffff835a9f79>] kzalloc include/linux/slab.h:620 [inline]
[<ffffffff835a9f79>] l2tp_session_create+0x39/0x1030
net/l2tp/l2tp_core.c:1748
[<ffffffff835aec80>] pppol2tp_connect+0x10f0/0x1910 net/l2tp/l2tp_ppp.c:725
[<ffffffff82f27bf8>] SYSC_connect+0x1b8/0x300 net/socket.c:1570
[<ffffffff82f2a544>] SyS_connect+0x24/0x30 net/socket.c:1551
[<ffffffff838cc565>] entry_SYSCALL_64_fastpath+0x22/0x9e

Freed by task 3895:
[<ffffffff81034676>] save_stack_trace+0x26/0x50
arch/x86/kernel/stacktrace.c:63
[<ffffffff814fd7d3>] save_stack+0x43/0xd0 mm/kasan/kasan.c:512
[<ffffffff814fe102>] set_track mm/kasan/kasan.c:524 [inline]
[<ffffffff814fe102>] kasan_slab_free+0x72/0xc0 mm/kasan/kasan.c:589
[<ffffffff814fb664>] slab_free_hook mm/slub.c:1383 [inline]
[<ffffffff814fb664>] slab_free_freelist_hook mm/slub.c:1405 [inline]
[<ffffffff814fb664>] slab_free mm/slub.c:2859 [inline]
[<ffffffff814fb664>] kfree+0xf4/0x310 mm/slub.c:3749
[<ffffffff835a6ee0>] l2tp_session_free+0x170/0x200
net/l2tp/l2tp_core.c:1676
[<ffffffff835a9299>] l2tp_session_dec_refcount_1 net/l2tp/l2tp_core.h:293
[inline]
[<ffffffff835a9299>] l2tp_tunnel_closeall+0x2b9/0x350
net/l2tp/l2tp_core.c:1279
[<ffffffff835a9dab>] l2tp_udp_encap_destroy+0x8b/0xf0
net/l2tp/l2tp_core.c:1300
[<ffffffff8349bc11>] udpv6_destroy_sock+0xb1/0xd0 net/ipv6/udp.c:1421
[<ffffffff82f38add>] sk_common_release+0x6d/0x300 net/core/sock.c:2680
[<ffffffff8349a8c5>] udp_lib_close+0x15/0x20 include/net/udp.h:190
[<ffffffff8330244f>] inet_release+0xff/0x1d0 net/ipv4/af_inet.c:435
[<ffffffff83424ec0>] inet6_release+0x50/0x70 net/ipv6/af_inet6.c:424
[<ffffffff82f210c9>] __sock_release+0xd9/0x260 net/socket.c:592
[<ffffffff82f21269>] sock_close+0x19/0x20 net/socket.c:1050
[<ffffffff81528875>] __fput+0x235/0x6f0 fs/file_table.c:208
[<ffffffff81528db5>] ____fput+0x15/0x20 fs/file_table.c:244
[<ffffffff8118ee4f>] task_work_run+0x10f/0x190 kernel/task_work.c:115
[<ffffffff811382b5>] exit_task_work include/linux/task_work.h:21 [inline]
[<ffffffff811382b5>] do_exit+0x9e5/0x26b0 kernel/exit.c:755
[<ffffffff8113e1f1>] do_group_exit+0x111/0x330 kernel/exit.c:885
[<ffffffff811615ec>] get_signal+0x4ec/0x14b0 kernel/signal.c:2321
[<ffffffff8100df4b>] do_signal+0x8b/0x1d30 arch/x86/kernel/signal.c:712
[<ffffffff8100360a>] exit_to_usermode_loop+0x11a/0x160
arch/x86/entry/common.c:249
[<ffffffff81006363>] prepare_exit_to_usermode+0xe3/0x100
arch/x86/entry/common.c:284
[<ffffffff838cd108>] retint_user+0x8/0x3c

The buggy address belongs to the object at ffff8800b41baf00

which belongs to the cache kmalloc-512 of size 512
The buggy address is located 0 bytes inside of

512-byte region [ffff8800b41baf00, ffff8800b41bb100)

The buggy address belongs to the page:

Initializing cgroup subsys cpuset
Initializing cgroup subsys cpu
Initializing cgroup subsys cpuacct
Initializing cgroup subsys schedtune
Linux version 4.4.152-ge5c5f1f (syzkaller@ci) (gcc version 8.0.1 20180413
(experimental) (GCC) ) #89 SMP PREEMPT Sat Aug 25 06:48:55 UTC 2018
Command line: BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0
earlyprintk=serial vsyscall=native rodata=n ftrace_dump_on_oops=orig_cpu
oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400
workqueue.watchdog_thresh=140 nopti
KERNEL supported cpus:
Intel GenuineIntel
AMD AuthenticAMD
Centaur CentaurHauls
x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
x86/fpu: Supporting XSAVE feature 0x01: 'x87 floating point registers'
x86/fpu: Supporting XSAVE feature 0x02: 'SSE registers'
x86/fpu: Supporting XSAVE feature 0x04: 'AVX registers'
x86/fpu: Enabled xstate features 0x7, context size is 832 bytes,
using 'standard' format.
e820: BIOS-provided physical RAM map:
BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
BIOS-e820: [mem 0x0000000000100000-0x00000000bfff2fff] usable
BIOS-e820: [mem 0x00000000bfff3000-0x00000000bfffffff] reserved
BIOS-e820: [mem 0x00000000fffbc000-0x00000000ffffffff] reserved
BIOS-e820: [mem 0x0000000100000000-0x000000021fffffff] usable
bootconsole [earlyser0] enabled
NX (Execute Disable) protection: active
SMBIOS 2.4 present.
Hypervisor detected: KVM
Kernel/User page tables isolation: disabled
e820: last_pfn = 0x220000 max_arch_pfn = 0x400000000
x86/PAT: Configuration [0-7]: WB WC UC- UC WB WC UC- WT
e820: last_pfn = 0xbfff3 max_arch_pfn = 0x400000000
found SMP MP-table at [mem 0x000f2300-0x000f230f] mapped at
[ffff8800000f2300]
Scanning 1 areas for low memory corruption
Using GB pages for direct mapping
ACPI: Early table checksum verification disabled
ACPI: RSDP 0x00000000000F22C0 000014 (v00 Google)
ACPI: RSDT 0x00000000BFFF3430 000038 (v01 Google GOOGRSDT 00000001 GOOG
00000001)
ACPI: FACP 0x00000000BFFFCF60 0000F4 (v02 Google GOOGFACP 00000001 GOOG
00000001)
ACPI: DSDT 0x00000000BFFF3470 0017B2 (v01 Google GOOGDSDT 00000001 GOOG
00000001)
ACPI: FACS 0x00000000BFFFCF00 000040
ACPI: FACS 0x00000000BFFFCF00 000040
ACPI: SSDT 0x00000000BFFF65F0 00690D (v01 Google GOOGSSDT 00000001 GOOG
00000001)
ACPI: APIC 0x00000000BFFF5D10 000076 (v01 Google GOOGAPIC 00000001 GOOG
00000001)
ACPI: WAET 0x00000000BFFF5CE0 000028 (v01 Google GOOGWAET 00000001 GOOG
00000001)
ACPI: SRAT 0x00000000BFFF4C30 0000C8 (v01 Google GOOGSRAT 00000001 GOOG
00000001)
kvm-clock: Using msrs 4b564d01 and 4b564d00
kvm-clock: cpu 0, msr 2:1fffd001, primary cpu clock
kvm-clock: using sched offset of 2243076387 cycles
clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb,
max_idle_ns: 881590591483 ns
Zone ranges:
DMA [mem 0x0000000000001000-0x0000000000ffffff]
DMA32 [mem 0x0000000001000000-0x00000000ffffffff]
Normal [mem 0x0000000100000000-0x000000021fffffff]
Movable zone start for each node
Early memory node ranges
node 0: [mem 0x0000000000001000-0x000000000009efff]
node 0: [mem 0x0000000000100000-0x00000000bfff2fff]
node 0: [mem 0x0000000100000000-0x000000021fffffff]
Initmem setup node 0 [mem 0x0000000000001000-0x000000021fffffff]
kasan: KernelAddressSanitizer initialized
ACPI: PM-Timer IO Port: 0xb008
ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
Using ACPI (MADT) for SMP configuration information
smpboot: Allowing 2 CPUs, 0 hotplug CPUs
PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
PM: Registered nosave memory: [mem 0x000a0000-0x000effff]
PM: Registered nosave memory: [mem 0x000f0000-0x000fffff]
PM: Registered nosave memory: [mem 0xbfff3000-0xbfffffff]
PM: Registered nosave memory: [mem 0xc0000000-0xfffbbfff]
PM: Registered nosave memory: [mem 0xfffbc000-0xffffffff]
e820: [mem 0xc0000000-0xfffbbfff] available for PCI devices
Booting paravirtualized kernel on KVM
clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff,
max_idle_ns: 19112604462750000 ns
setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:2 nr_node_ids:1
PERCPU: Embedded 42 pages/cpu @ffff8801db200000 s134152 r8192 d29688
u1048576
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 1935227
Kernel command line: BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0
earlyprintk=serial vsyscall=native rodata=n ftrace_dump_on_oops=orig_cpu
oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400
workqueue.watchdog_thresh=140 nopti
PID hash table entries: 4096 (order: 3, 32768 bytes)
Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes)
Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes)
Memory: 6579080K/7863876K available (41801K kernel code, 6308K rwdata,
9068K rodata, 1868K init, 23696K bss, 1284796K reserved, 0K cma-reserved)
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
Running RCU self tests
Preemptible hierarchical RCU implementation.
RCU lockdep checking is enabled.
Build-time adjustment of leaf fanout to 64.
RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=2.
RCU: Adjusting geometry for rcu_fanout_leaf=64, nr_cpu_ids=2
NR_IRQS:4352 nr_irqs:440 16
console [ttyS0] enabled
console [ttyS0] enabled
bootconsole [earlyser0] disabled
bootconsole [earlyser0] disabled
Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
... MAX_LOCKDEP_SUBCLASSES: 8
... MAX_LOCK_DEPTH: 48
... MAX_LOCKDEP_KEYS: 8191
... CLASSHASH_SIZE: 4096
... MAX_LOCKDEP_ENTRIES: 32768
... MAX_LOCKDEP_CHAINS: 65536
... CHAINHASH_SIZE: 32768
memory used by lock dependency info: 8159 kB
per task-struct memory footprint: 1920 bytes
tsc: Detected 2299.998 MHz processor
Calibrating delay loop (skipped) preset value.. 4599.99 BogoMIPS
(lpj=22999980)
pid_max: default: 32768 minimum: 301
ACPI: Core revision 20150930
ACPI: 2 ACPI AML tables successfully acquired and loaded
Security Framework initialized
SELinux: Initializing.
AppArmor: AppArmor disabled by boot time parameter
Mount-cache hash table entries: 16384 (order: 5, 131072 bytes)
Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes)
Initializing cgroup subsys io
Initializing cgroup subsys freezer
Initializing cgroup subsys hugetlb
Initializing cgroup subsys debug
CPU: Physical Processor ID: 0
mce: CPU supports 32 MCE banks
Last level iTLB entries: 4KB 1024, 2MB 1024, 4MB 1024
Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 1024, 1GB 4
Spectre V2 : Mitigation: Full generic retpoline
Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context
switch
Speculative Store Bypass: Vulnerable
Freeing SMP alternatives memory: 48K
..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1
smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.30GHz (family: 0x6, model: 0x3f,
stepping: 0x0)
Performance Events: unsupported p6 CPU model 63 no PMU driver, software
events only.
x86: Booting SMP configuration:
.... node #0, CPUs: #1
kvm-clock: cpu 1, msr 2:1fffd041, secondary cpu clock
x86: Booted up 1 node, 2 CPUs
smpboot: Total of 2 processors activated (9199.99 BogoMIPS)
devtmpfs: initialized
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns:
19112604462750000 ns
futex hash table entries: 512 (order: 4, 65536 bytes)
xor: automatically using best checksumming function:
kworker/u4:0 (21) used greatest stack depth: 27920 bytes left
avx : 25388.000 MB/sec
RTC time: 1:16:22, date: 08/27/18
NET: Registered protocol family 16
schedtune: init normalization constants...
schedtune: no energy model data
schedtune: disabled!
kworker/u4:0 (27) used greatest stack depth: 27664 bytes left
cpuidle: using governor ladder
cpuidle: using governor menu
ACPI: bus type PCI registered
acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
PCI: Using configuration type 1 for base access
kworker/u4:0 (43) used greatest stack depth: 27616 bytes left
kworker/u4:0 (46) used greatest stack depth: 27424 bytes left
kworker/u4:0 (47) used greatest stack depth: 27024 bytes left
raid6: sse2x1 gen() 4434 MB/s
raid6: sse2x1 xor() 2350 MB/s
raid6: sse2x2 gen() 6828 MB/s
raid6: sse2x2 xor() 3922 MB/s
raid6: sse2x4 gen() 9569 MB/s
raid6: sse2x4 xor() 5450 MB/s
raid6: avx2x1 gen() 9393 MB/s
raid6: avx2x2 gen() 13206 MB/s
raid6: avx2x4 gen() 17901 MB/s
raid6: using algorithm avx2x4 gen() 17901 MB/s
raid6: using avx2x2 recovery algorithm
ACPI: Added _OSI(Module Device)
ACPI: Added _OSI(Processor Device)
ACPI: Added _OSI(3.0 _SCP Extensions)
ACPI: Added _OSI(Processor Aggregator Device)
ACPI: Executed 2 blocks of module-level executable AML code
ACPI: Interpreter enabled
ACPI: (supports S0 S3 S4 S5)
ACPI: Using IOAPIC for interrupt routing
PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and
report a bug
ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI]
acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM
acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended
PCI configuration space under this bridge.
PCI host bridge to bus 0000:00
pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window]
pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window]
pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfffff window]
pci_bus 0000:00: root bus resource [bus 00-ff]
pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI
ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11)
ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11)
ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11)
ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11)
ACPI: PCI Interrupt Link [LNKS] (IRQs *9)