syzbot


KASAN: slab-out-of-bounds Write in get_tpkt_data

Status: public: reported C repro on 2019/04/11 08:44
Reported-by: syzbot+1eaf02d68abda31f688b@syzkaller.appspotmail.com
Fix commit: netfilter: nf_conntrack_h323: lost .data_len definition for
Patched on: [], missing on: [ci-android-44-kasan-gce ci-android-44-kasan-gce-386]
First crash: 2325d, last: 1915d

Sample crash report:
random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available)
random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available)
random: nonblocking pool is initialized
nf_conntrack: automatic helper assignment is deprecated and it will be removed soon. Use the iptables CT target to attach helpers instead.
==================================================================
BUG: KASAN: slab-out-of-bounds in get_tpkt_data+0x926/0xa10 net/netfilter/nf_conntrack_h323_main.c:218
Write of size 2 at addr ffff8800addec4e2 by task syz-executor444/3839

CPU: 1 PID: 3839 Comm: syz-executor444 Not tainted 4.4.138-gcf21a9a #64
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 6dd2ed23b98b244f ffff8801db306cb0 ffffffff81e0ed0d
 ffffea0002b77b00 ffff8800addec4e2 0000000000000001 ffff8800addec4e2
 ffff8800bac7f6b8 ffff8801db306ce8 ffffffff81515a16 ffff8800addec4e2
Call Trace:
 <IRQ>  [<ffffffff81e0ed0d>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ>  [<ffffffff81e0ed0d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81515a16>] print_address_description+0x6c/0x216 mm/kasan/report.c:252
 [<ffffffff81515d35>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff81515d35>] kasan_report.cold.7+0x175/0x2f7 mm/kasan/report.c:408
 [<ffffffff814f9887>] __asan_report_store2_noabort+0x17/0x20 mm/kasan/report.c:432
 [<ffffffff8311fde6>] get_tpkt_data+0x926/0xa10 net/netfilter/nf_conntrack_h323_main.c:218
 [<ffffffff831202a8>] q931_help+0x1a8/0x1020 net/netfilter/nf_conntrack_h323_main.c:1177
 [<ffffffff83524e3e>] ipv6_helper+0x2de/0x3e0 net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c:131
 [<ffffffff830c2372>] nf_iterate+0x182/0x210 net/netfilter/core.c:274
 [<ffffffff830c25b6>] nf_hook_slow+0x1b6/0x340 net/netfilter/core.c:306
 [<ffffffff8343389c>] nf_hook_thresh include/linux/netfilter.h:187 [inline]
 [<ffffffff8343389c>] NF_HOOK_COND include/linux/netfilter.h:239 [inline]
 [<ffffffff8343389c>] ip6_output+0x28c/0x520 net/ipv6/ip6_output.c:145
 [<ffffffff8342bc1a>] dst_output include/net/dst.h:498 [inline]
 [<ffffffff8342bc1a>] NF_HOOK_THRESH include/linux/netfilter.h:226 [inline]
 [<ffffffff8342bc1a>] NF_HOOK include/linux/netfilter.h:249 [inline]
 [<ffffffff8342bc1a>] ip6_xmit+0xc7a/0x1a00 net/ipv6/ip6_output.c:242
 [<ffffffff834cf0cd>] tcp_v6_send_response+0xbed/0x1550 net/ipv6/tcp_ipv6.c:834
 [<ffffffff834d0016>] tcp_v6_send_reset+0x286/0x9d0 net/ipv6/tcp_ipv6.c:904
 [<ffffffff834d26ce>] tcp_v6_rcv+0xb4e/0x2980 net/ipv6/tcp_ipv6.c:1498
 [<ffffffff834368ee>] ip6_input_finish+0x32e/0x1550 net/ipv6/ip6_input.c:248
 [<ffffffff834398d6>] NF_HOOK_THRESH include/linux/netfilter.h:226 [inline]
 [<ffffffff834398d6>] NF_HOOK include/linux/netfilter.h:249 [inline]
 [<ffffffff834398d6>] ip6_input+0xf6/0x200 net/ipv6/ip6_input.c:280
 [<ffffffff834360bd>] dst_input include/net/dst.h:504 [inline]
 [<ffffffff834360bd>] ip6_rcv_finish+0x13d/0x640 net/ipv6/ip6_input.c:62
 [<ffffffff83438bdb>] NF_HOOK_THRESH include/linux/netfilter.h:226 [inline]
 [<ffffffff83438bdb>] NF_HOOK include/linux/netfilter.h:249 [inline]
 [<ffffffff83438bdb>] ipv6_rcv+0x10cb/0x1cd0 net/ipv6/ip6_input.c:186
 [<ffffffff82f7eb06>] __netif_receive_skb_core+0x12d6/0x2940 net/core/dev.c:4019
 [<ffffffff82f801cb>] __netif_receive_skb+0x5b/0x1b0 net/core/dev.c:4054
 [<ffffffff82f84756>] process_backlog+0x216/0x6a0 net/core/dev.c:4647
 [<ffffffff82f81592>] napi_poll net/core/dev.c:4885 [inline]
 [<ffffffff82f81592>] net_rx_action+0x3a2/0xdb0 net/core/dev.c:4950
 [<ffffffff838c5bec>] __do_softirq+0x22c/0xa1a kernel/softirq.c:273
 [<ffffffff838c399c>] do_softirq_own_stack+0x1c/0x30 arch/x86/entry/entry_64.S:929
 <EOI>  [<ffffffff8113d9d4>] do_softirq.part.16+0x54/0x60 kernel/softirq.c:317
 [<ffffffff8113daa6>] do_softirq arch/x86/include/asm/preempt.h:22 [inline]
 [<ffffffff8113daa6>] __local_bh_enable_ip+0xc6/0xd0 kernel/softirq.c:170
 [<ffffffff83429c70>] local_bh_enable include/linux/bottom_half.h:31 [inline]
 [<ffffffff83429c70>] rcu_read_unlock_bh include/linux/rcupdate.h:957 [inline]
 [<ffffffff83429c70>] ip6_finish_output2+0x970/0x1ca0 net/ipv6/ip6_output.c:114
 [<ffffffff83433268>] ip6_finish_output+0x3b8/0x760 net/ipv6/ip6_output.c:131
 [<ffffffff834337c8>] NF_HOOK_COND include/linux/netfilter.h:240 [inline]
 [<ffffffff834337c8>] ip6_output+0x1b8/0x520 net/ipv6/ip6_output.c:145
 [<ffffffff8342bc1a>] dst_output include/net/dst.h:498 [inline]
 [<ffffffff8342bc1a>] NF_HOOK_THRESH include/linux/netfilter.h:226 [inline]
 [<ffffffff8342bc1a>] NF_HOOK include/linux/netfilter.h:249 [inline]
 [<ffffffff8342bc1a>] ip6_xmit+0xc7a/0x1a00 net/ipv6/ip6_output.c:242
 [<ffffffff834ec445>] inet6_csk_xmit+0x245/0x490 net/ipv6/inet6_connection_sock.c:176
 [<ffffffff83280ef2>] tcp_transmit_skb+0x1642/0x2bf0 net/ipv4/tcp_output.c:1029
 [<ffffffff8328992d>] tcp_send_syn_data net/ipv4/tcp_output.c:3243 [inline]
 [<ffffffff8328992d>] tcp_connect+0x1d3d/0x30c0 net/ipv4/tcp_output.c:3278
 [<ffffffff834cde1e>] tcp_v6_connect+0x14ae/0x1b70 net/ipv6/tcp_ipv6.c:294
 [<ffffffff832f9b89>] __inet_stream_connect+0x2a9/0xc30 net/ipv4/af_inet.c:615
 [<ffffffff83249910>] tcp_sendmsg_fastopen net/ipv4/tcp.c:1092 [inline]
 [<ffffffff83249910>] tcp_sendmsg+0x1600/0x2b00 net/ipv4/tcp.c:1112
 [<ffffffff83300dd3>] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:755
 [<ffffffff82f1e22c>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82f1e22c>] sock_sendmsg+0xcc/0x110 net/socket.c:635
 [<ffffffff82f1ef0c>] SYSC_sendto+0x21c/0x370 net/socket.c:1665
 [<ffffffff82f21590>] SyS_sendto+0x40/0x50 net/socket.c:1633
 [<ffffffff838c2725>] entry_SYSCALL_64_fastpath+0x22/0x9e

Allocated by task 3839:
 [<ffffffff81033e46>] save_stack_trace+0x26/0x50 arch/x86/kernel/stacktrace.c:63
 [<ffffffff814f88d3>] save_stack+0x43/0xd0 mm/kasan/kasan.c:512
 [<ffffffff814f8bb7>] set_track mm/kasan/kasan.c:524 [inline]
 [<ffffffff814f8bb7>] kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:616
 [<ffffffff814f9394>] kasan_krealloc+0x64/0x80 mm/kasan/kasan.c:654
 [<ffffffff8147a15c>] __do_krealloc mm/slab_common.c:1196 [inline]
 [<ffffffff8147a15c>] __krealloc+0x8c/0xb0 mm/slab_common.c:1222
 [<ffffffff830f94a3>] __nf_ct_ext_add_length+0x223/0xb50 net/netfilter/nf_conntrack_extend.c:104
 [<ffffffff830eb11f>] nf_ct_helper_ext_add net/netfilter/nf_conntrack_helper.c:176 [inline]
 [<ffffffff830eb11f>] __nf_ct_try_assign_helper+0x30f/0x850 net/netfilter/nf_conntrack_helper.c:230
 [<ffffffff830e0358>] init_conntrack+0x728/0xd40 net/netfilter/nf_conntrack_core.c:1006
 [<ffffffff830e1759>] resolve_normal_ct net/netfilter/nf_conntrack_core.c:1056 [inline]
 [<ffffffff830e1759>] nf_conntrack_in+0xde9/0x1220 net/netfilter/nf_conntrack_core.c:1145
 [<ffffffff83525065>] ipv6_conntrack_local+0x95/0xf0 net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c:184
 [<ffffffff830c2372>] nf_iterate+0x182/0x210 net/netfilter/core.c:274
 [<ffffffff830c25b6>] nf_hook_slow+0x1b6/0x340 net/netfilter/core.c:306
 [<ffffffff8342be2c>] nf_hook_thresh include/linux/netfilter.h:187 [inline]
 [<ffffffff8342be2c>] NF_HOOK_THRESH include/linux/netfilter.h:224 [inline]
 [<ffffffff8342be2c>] NF_HOOK include/linux/netfilter.h:249 [inline]
 [<ffffffff8342be2c>] ip6_xmit+0xe8c/0x1a00 net/ipv6/ip6_output.c:242
 [<ffffffff834ec445>] inet6_csk_xmit+0x245/0x490 net/ipv6/inet6_connection_sock.c:176
 [<ffffffff83280ef2>] tcp_transmit_skb+0x1642/0x2bf0 net/ipv4/tcp_output.c:1029
 [<ffffffff8328992d>] tcp_send_syn_data net/ipv4/tcp_output.c:3243 [inline]
 [<ffffffff8328992d>] tcp_connect+0x1d3d/0x30c0 net/ipv4/tcp_output.c:3278
 [<ffffffff834cde1e>] tcp_v6_connect+0x14ae/0x1b70 net/ipv6/tcp_ipv6.c:294
 [<ffffffff832f9b89>] __inet_stream_connect+0x2a9/0xc30 net/ipv4/af_inet.c:615
 [<ffffffff83249910>] tcp_sendmsg_fastopen net/ipv4/tcp.c:1092 [inline]
 [<ffffffff83249910>] tcp_sendmsg+0x1600/0x2b00 net/ipv4/tcp.c:1112
 [<ffffffff83300dd3>] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:755
 [<ffffffff82f1e22c>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82f1e22c>] sock_sendmsg+0xcc/0x110 net/socket.c:635
 [<ffffffff82f1ef0c>] SYSC_sendto+0x21c/0x370 net/socket.c:1665
 [<ffffffff82f21590>] SyS_sendto+0x40/0x50 net/socket.c:1633
 [<ffffffff838c2725>] entry_SYSCALL_64_fastpath+0x22/0x9e

Freed by task 2063:
 [<ffffffff81033e46>] save_stack_trace+0x26/0x50 arch/x86/kernel/stacktrace.c:63
 [<ffffffff814f88d3>] save_stack+0x43/0xd0 mm/kasan/kasan.c:512
 [<ffffffff814f9202>] set_track mm/kasan/kasan.c:524 [inline]
 [<ffffffff814f9202>] kasan_slab_free+0x72/0xc0 mm/kasan/kasan.c:589
 [<ffffffff814f6704>] slab_free_hook mm/slub.c:1383 [inline]
 [<ffffffff814f6704>] slab_free_freelist_hook mm/slub.c:1405 [inline]
 [<ffffffff814f6704>] slab_free mm/slub.c:2859 [inline]
 [<ffffffff814f6704>] kfree+0xf4/0x310 mm/slub.c:3749
 [<ffffffff816a5f84>] kernfs_put_open_node.isra.3+0xa4/0xf0 fs/kernfs/file.c:609
 [<ffffffff816a6090>] kernfs_fop_release+0xc0/0x140 fs/kernfs/file.c:734
 [<ffffffff81522e05>] __fput+0x235/0x6f0 fs/file_table.c:208
 [<ffffffff81523345>] ____fput+0x15/0x20 fs/file_table.c:244
 [<ffffffff8118bd7f>] task_work_run+0x10f/0x190 kernel/task_work.c:115
 [<ffffffff8100362d>] tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 [<ffffffff8100362d>] exit_to_usermode_loop+0x13d/0x160 arch/x86/entry/common.c:252
 [<ffffffff81006535>] prepare_exit_to_usermode arch/x86/entry/common.c:283 [inline]
 [<ffffffff81006535>] syscall_return_slowpath+0x1b5/0x1f0 arch/x86/entry/common.c:348
 [<ffffffff838c28b5>] int_ret_from_sys_call+0x25/0xa3

The buggy address belongs to the object at ffff8800addec480
 which belongs to the cache kmalloc-96 of size 96
The buggy address is located 2 bytes to the right of
 96-byte region [ffff8800addec480, ffff8800addec4e0)
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 4.4.138-gcf21a9a (syzkaller@ci) (gcc version 8.0.1 20180413 (experimental) (GCC) ) #64 SMP PREEMPT Tue Jun 26 00:41:54 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 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 0x000f2310-0x000f231f] mapped at [ffff8800000f2310]
Scanning 1 areas for low memory corruption
Using GB pages for direct mapping
ACPI: Early table checksum verification disabled
ACPI: RSDP 0x00000000000F22D0 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 2224120531 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 s134024 r8192 d29816 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 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: 6579092K/7863876K available (41761K kernel code, 6302K rwdata, 9048K rodata, 1864K init, 23696K bss, 1284784K 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 2300.000 MHz processor
Calibrating delay loop (skipped) preset value.. 4600.00 BogoMIPS (lpj=23000000)
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
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 (9200.00 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: 27424 bytes left
   avx       : 23498.000 MB/sec
RTC time: 23:41:07, date: 06/27/18
NET: Registered protocol family 16
schedtune: init normalization constants...
schedtune: no energy model data
schedtune: disabled!
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/u4:1 (38) used greatest stack depth: 27024 bytes left
raid6: sse2x1   gen()  4747 MB/s
raid6: sse2x1   xor()  2558 MB/s
raid6: sse2x2   gen()  7500 MB/s
raid6: sse2x2   xor()  4247 MB/s
raid6: sse2x4   gen()  9837 MB/s
raid6: sse2x4   xor()  5635 MB/s
raid6: avx2x1   gen()  9071 MB/s
raid6: avx2x2   gen() 13941 MB/s
raid6: avx2x4   gen() 18240 MB/s
raid6: using algorithm avx2x4 gen() 18240 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)

Crashes (2337):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/06/27 23:43 https://android.googlesource.com/kernel/common android-4.4 cf21a9ac5ee4 43e60f7e .config console log report syz C ci-android-44-kasan-gce
2018/05/24 03:34 https://android.googlesource.com/kernel/common android-4.4 c3c51ea38a92 f48c20b8 .config console log report syz C ci-android-44-kasan-gce
2018/06/27 23:58 https://android.googlesource.com/kernel/common android-4.4 cf21a9ac5ee4 43e60f7e .config console log report syz ci-android-44-kasan-gce-386
2018/05/24 03:21 https://android.googlesource.com/kernel/common android-4.4 c3c51ea38a92 f48c20b8 .config console log report syz ci-android-44-kasan-gce-386
2019/06/29 03:26 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 7509bf36 .config console log report ci-android-44-kasan-gce
2019/06/21 10:10 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 34bf9440 .config console log report ci-android-44-kasan-gce
2019/06/17 14:38 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 442206d7 .config console log report ci-android-44-kasan-gce
2019/06/15 05:06 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 442206d7 .config console log report ci-android-44-kasan-gce
2019/06/08 15:38 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 0159583c .config console log report ci-android-44-kasan-gce
2019/06/06 05:26 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b a547defc .config console log report ci-android-44-kasan-gce
2019/06/05 14:50 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b bfb4a51e .config console log report ci-android-44-kasan-gce
2019/06/03 21:16 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 63bf051f .config console log report ci-android-44-kasan-gce
2019/04/28 12:21 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b b617407b .config console log report ci-android-44-kasan-gce
2019/07/07 22:28 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b f62e1e85 .config console log report ci-android-44-kasan-gce-386
2019/07/04 11:58 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 55565fa0 .config console log report ci-android-44-kasan-gce-386
2019/07/01 17:35 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 907bf746 .config console log report ci-android-44-kasan-gce-386
2019/06/29 22:20 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 7509bf36 .config console log report ci-android-44-kasan-gce-386
2019/06/22 14:45 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 34bf9440 .config console log report ci-android-44-kasan-gce-386
2019/06/21 11:25 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 34bf9440 .config console log report ci-android-44-kasan-gce-386
2019/06/20 22:31 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 34bf9440 .config console log report ci-android-44-kasan-gce-386
2019/06/18 07:33 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 442206d7 .config console log report ci-android-44-kasan-gce-386
2019/06/17 18:04 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 442206d7 .config console log report ci-android-44-kasan-gce-386
2019/06/14 22:10 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 442206d7 .config console log report ci-android-44-kasan-gce-386
2019/06/11 04:00 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 0159583c .config console log report ci-android-44-kasan-gce-386
2019/06/10 08:58 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 0159583c .config console log report ci-android-44-kasan-gce-386
2019/06/10 07:30 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 0159583c .config console log report ci-android-44-kasan-gce-386
2019/06/09 02:23 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 0159583c .config console log report ci-android-44-kasan-gce-386
2019/06/09 00:34 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 0159583c .config console log report ci-android-44-kasan-gce-386
2019/06/08 21:28 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 0159583c .config console log report ci-android-44-kasan-gce-386
2019/06/08 11:23 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b cf9c3a50 .config console log report ci-android-44-kasan-gce-386
2019/06/05 17:54 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b bfb4a51e .config console log report ci-android-44-kasan-gce-386
2019/06/02 11:16 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 53c81ea5 .config console log report ci-android-44-kasan-gce-386
2019/06/01 21:23 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 53c81ea5 .config console log report ci-android-44-kasan-gce-386
2019/05/30 22:32 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b d9aaf3c2 .config console log report ci-android-44-kasan-gce-386
2019/05/29 12:11 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 6bd61501 .config console log report ci-android-44-kasan-gce-386
2019/05/28 09:37 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 6bd61501 .config console log report ci-android-44-kasan-gce-386
2019/05/27 18:19 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 562efd79 .config console log report ci-android-44-kasan-gce-386
2019/05/27 02:11 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 85c57315 .config console log report ci-android-44-kasan-gce-386
2019/05/26 11:56 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 85c57315 .config console log report ci-android-44-kasan-gce-386
2019/05/26 05:44 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 85c57315 .config console log report ci-android-44-kasan-gce-386
2019/05/25 06:44 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 85c57315 .config console log report ci-android-44-kasan-gce-386
2019/05/24 05:57 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 0dadcd9d .config console log report ci-android-44-kasan-gce-386
2019/05/22 07:03 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 84b9d384 .config console log report ci-android-44-kasan-gce-386
2019/05/20 02:18 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 5a4461b0 .config console log report ci-android-44-kasan-gce-386
2019/05/18 20:41 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 5a4461b0 .config console log report ci-android-44-kasan-gce-386
2019/05/17 14:43 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 95dfd515 .config console log report ci-android-44-kasan-gce-386
2019/05/16 03:49 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b 051c49fe .config console log report ci-android-44-kasan-gce-386
2019/05/08 06:24 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b a7383bfa .config console log report ci-android-44-kasan-gce-386
2019/05/08 02:03 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b a7383bfa .config console log report ci-android-44-kasan-gce-386
2019/05/04 11:50 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b d28f4ce5 .config console log report ci-android-44-kasan-gce-386
2019/04/29 12:18 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b b617407b .config console log report ci-android-44-kasan-gce-386
2019/04/27 21:00 https://android.googlesource.com/kernel/common android-4.4 62872f952d6b b617407b .config console log report ci-android-44-kasan-gce-386
* Struck through repros no longer work on HEAD.