syzbot


KASAN: wild-memory-access Read of size 158

Status: closed as invalid on 2017/10/18 09:01
First crash: 2388d, last: 2388d

Sample crash report:
tmpfs: No value for mount option 'H!'
device gre0 entered promiscuous mode
==================================================================
BUG: KASAN: wild-memory-access on address ffe708762c108000
Read of size 158 by task syz-executor3/18155
CPU: 1 PID: 18155 Comm: syz-executor3 Not tainted 4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801a98bfae8 ffffffff81d93149 ffe708762c108000 000000000000009e
 0000000000000000 ffff8801a893e0c0 ffe708762c108000 ffff8801a98bfb70
 ffffffff8153d08f 0000000000000000 0000000000000001 ffffffff826648db
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153d08f>] kasan_report_error mm/kasan/report.c:284 [inline]
 [<ffffffff8153d08f>] kasan_report.part.1+0x40f/0x500 mm/kasan/report.c:309
 [<ffffffff8153d460>] kasan_report+0x20/0x30 mm/kasan/report.c:296
 [<ffffffff8153bda7>] check_memory_region_inline mm/kasan/kasan.c:308 [inline]
 [<ffffffff8153bda7>] check_memory_region+0x137/0x190 mm/kasan/kasan.c:315
 [<ffffffff8153be11>] kasan_check_read+0x11/0x20 mm/kasan/kasan.c:320
 [<ffffffff826648db>] __copy_to_user arch/x86/include/asm/uaccess_64.h:182 [inline]
 [<ffffffff826648db>] sg_read_oxfer drivers/scsi/sg.c:1978 [inline]
 [<ffffffff826648db>] sg_read+0x124b/0x1400 drivers/scsi/sg.c:520
 [<ffffffff8156d353>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156e8e7>] vfs_read+0x107/0x330 fs/read_write.c:475
 [<ffffffff815724c9>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff815724c9>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
==================================================================
FAULT_FLAG_ALLOW_RETRY missing 30
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 18282 Comm: syz-executor4 Tainted: G    B           4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801a50579b0 ffffffff81d93149 ffff8801a5057c90 0000000000000000
 ffff8801d66d3f10 ffff8801a5057b80 ffff8801d66d3e00 ffff8801a5057ba8
 ffffffff81660dc8 ffff8801a5057b00 ffff8801a5057be0 00000001ca6c7067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad818>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 18274 Comm: syz-executor4 Tainted: G    B           4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c8b479e0 ffffffff81d93149 ffff8801c8b47cc0 0000000000000000
 ffff8801d66d3f10 ffff8801c8b47bb0 ffff8801d66d3e00 ffff8801c8b47bd8
 ffffffff81660dc8 ffff8801c8b47b30 ffff8801cb9b8000 00000001ca6c7067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad818>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 18262 Comm: syz-executor4 Tainted: G    B           4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c79c7910 ffffffff81d93149 ffff8801c79c7bf0 0000000000000000
 ffff8801d66d3f10 ffff8801c79c7ae0 ffff8801d66d3e00 ffff8801c79c7b08
 ffffffff81660dc8 ffff8801c79c7a60 ffffffff812dd279 00000001ca6c7067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad818>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
binder: 18278:18280 ioctl 8910 20000ff0 returned -22
CPU: 1 PID: 18288 Comm: syz-executor4 Tainted: G    B           4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c838f9a0 ffffffff81d93149 ffff8801c838fc80 0000000000000000
 ffff8801d66d3f10 ffff8801c838fb70 ffff8801d66d3e00 ffff8801c838fb98
 ffffffff81660dc8 ffff8801c838faf0 0000000000000000 00000001ca6c7067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad818>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
IPVS: Creating netns size=2536 id=41
device syz4 left promiscuous mode
pktgen: kernel_thread() failed for cpu 0
pktgen: Cannot create thread for cpu 0 (-4)
pktgen: kernel_thread() failed for cpu 1
pktgen: Cannot create thread for cpu 1 (-4)
pktgen: Initialization failed for all threads
device lo left promiscuous mode
TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies.  Check SNMP counters.
nla_parse: 11 callbacks suppressed
netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'.
netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'.
netlink: 5 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 5 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 5 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 5 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'.
TCP: tcp_parse_options: Illegal window scaling value 64 >14 received
TCP: tcp_parse_options: Illegal window scaling value 64 >14 received
binder: 18955:18957 ioctl 4b6a 20df7fb3 returned -22
PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex
PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex
IPVS: Creating netns size=2536 id=42
IPVS: set_ctl: invalid protocol: 31912 1.136.255.255:36599 F
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=21199 sclass=netlink_audit_socket pig=19120 comm=syz-executor6
IPVS: set_ctl: invalid protocol: 64680 1.136.255.255:4178 F
SELinux: unrecognized netlink message: protocol=4 nlmsg_type=24 sclass=netlink_tcpdiag_socket pig=19123 comm=syz-executor4
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=41 sclass=netlink_audit_socket pig=19120 comm=syz-executor6
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=21199 sclass=netlink_audit_socket pig=19120 comm=syz-executor6
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=41 sclass=netlink_audit_socket pig=19120 comm=syz-executor6
SELinux: unrecognized netlink message: protocol=4 nlmsg_type=24 sclass=netlink_tcpdiag_socket pig=19143 comm=syz-executor4
pktgen: kernel_thread() failed for cpu 0
pktgen: Cannot create thread for cpu 0 (-4)
pktgen: kernel_thread() failed for cpu 1
pktgen: Cannot create thread for cpu 1 (-4)
pktgen: Initialization failed for all threads
device gre0 entered promiscuous mode
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=1023 sclass=netlink_route_socket pig=19447 comm=syz-executor4
TCP: lo: Driver has suspect GRO implementation, TCP performance may be compromised.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=1023 sclass=netlink_route_socket pig=19477 comm=syz-executor4
IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 0 PID: 19620 Comm: syz-executor7 Tainted: G    B           4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801a99a76a0 ffffffff81d93149 ffff8801a99a7980[  102.557603] keychord: using input dev AT Translated Set 2 keyboard for fevent
 0000000000000000 ffff8801c8977f10 ffff8801a99a7870 ffff8801c8977e00 ffff8801a99a7898
 ffffffff81660dc8 ffff8801a99a77f0 ffff8801cbad9880 00000001cb495067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
keychord: invalid keycode count 0
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad818>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
FAULT_FLAG_ALLOW_RETRY missing 30
FAULT_FLAG_ALLOW_RETRY missing 30
FAULT_FLAG_ALLOW_RETRY missing 30
FAULT_FLAG_ALLOW_RETRY missing 30
 [<ffffffff834083e3>] inet6_ioctl+0x133/0x1e0 net/ipv6/af_inet6.c:533
 [<ffffffff82ec9ef5>] sock_do_ioctl+0x65/0xb0 net/socket.c:892
 [<ffffffff82eca940>] sock_ioctl+0x2e0/0x3d0 net/socket.c:978
 [<ffffffff815ace0a>] vfs_ioctl fs/ioctl.c:43 [inline]
 [<ffffffff815ace0a>] do_vfs_ioctl+0x1aa/0x10c0 fs/ioctl.c:679
binder: 19672:19676 ioctl 5420 20185ffc returned -22
 [<ffffffff815addaf>] SYSC_ioctl fs/ioctl.c:694 [inline]
 [<ffffffff815addaf>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
CPU: 1 PID: 19642 Comm: syz-executor2 Tainted: G    B           4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801abb079e0 ffffffff81d93149 ffff8801abb07cc0 0000000000000000
 ffff8801c8976590 ffff8801abb07bb0 ffff8801c8976480 ffff8801abb07bd8
 ffffffff81660dc8 ffff8801abb07b30 ffff8801abb09800 00000001ac6df067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
binder: 19672:19678 ioctl 5420 20185ffc returned -22
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad818>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
CPU: 0 PID: 19631 Comm: syz-executor2 Tainted: G    B           4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801aa517910 ffffffff81d93149 ffff8801aa517bf0 0000000000000000
 ffff8801c8976590 ffff8801aa517ae0 ffff8801c8976480 ffff8801aa517b08
 ffffffff81660dc8 ffff8801aa517a60 ffffffff812dd279 00000001ac6df067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad818>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
IPVS: Creating netns size=2536 id=43
CPU: 1 PID: 19658 Comm: syz-executor2 Tainted: G    B           4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c85ff9a0 ffffffff81d93149 ffff8801c85ffc80 0000000000000000
 ffff8801c8976590 ffff8801c85ffb70 ffff8801c8976480 ffff8801c85ffb98
 ffffffff81660dc8 ffff8801c85ffaf0 0000000000000000 00000001ac6df067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad818>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
CPU: 0 PID: 19655 Comm: syz-executor2 Tainted: G    B           4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801aaf679b0 ffffffff81d93149 ffff8801aaf67c90 0000000000000000
 ffff8801c8976590 ffff8801aaf67b80 ffff8801c8976480 ffff8801aaf67ba8
 ffffffff81660dc8 ffff8801aaf67b00 ffff8801aaf67be0 00000001ac6df067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad818>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
keychord: invalid keycode count 0
pktgen: kernel_thread() failed for cpu 0
pktgen: Cannot create thread for cpu 0 (-4)
pktgen: kernel_thread() failed for cpu 1
pktgen: Cannot create thread for cpu 1 (-4)
pktgen: Initialization failed for all threads
nla_parse: 13 callbacks suppressed
netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'.
netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'.
netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'.
IPVS: Creating netns size=2536 id=44
device lo entered promiscuous mode
IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready
device gre0 entered promiscuous mode
device gre0 left promiscuous mode
device gre0 entered promiscuous mode
IPVS: Creating netns size=2536 id=45
device gre0 left promiscuous mode
device syz4 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready
netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'.

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2017/10/02 07:00 https://android.googlesource.com/kernel/common android-4.9 9b2b08179641 c26ea367 .config console log report ci-android-49-kasan-gce
* Struck through repros no longer work on HEAD.