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KASAN: wild-memory-access Read of size 136

Status: closed as invalid on 2017/10/18 09:01
First crash: 2392d, last: 2392d

Sample crash report:
   program syz-executor6 not setting count and/or reply_len properly
binder: 9015:9019 ioctl 80404532 200f2f20 returned -22
==================================================================
BUG: KASAN: wild-memory-access on address ffe7087335200000
Read of size 136 by task syz-executor6/9064
CPU: 0 PID: 9064 Comm: syz-executor6 Not tainted 4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d6c779e8 ffffffff81d93149 ffe7087335200000 0000000000000088
 0000000000000000 ffff8801a95953c0 ffe7087335200000 ffff8801d6c77a70
 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
 [<ffffffff8156b741>] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714
 [<ffffffff8156f510>] do_loop_readv_writev fs/read_write.c:880 [inline]
 [<ffffffff8156f510>] do_readv_writev+0x520/0x750 fs/read_write.c:874
 [<ffffffff8156f7c4>] vfs_readv+0x84/0xc0 fs/read_write.c:898
 [<ffffffff8156f8e6>] do_readv+0xe6/0x250 fs/read_write.c:924
 [<ffffffff81572ca7>] SYSC_readv fs/read_write.c:1011 [inline]
 [<ffffffff81572ca7>] SyS_readv+0x27/0x30 fs/read_write.c:1008
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
==================================================================
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=770 sclass=netlink_audit_socket pig=9069 comm=syz-executor5
binder: 9218:9230 ioctl 5204 20375000 returned -22
binder: 9218:9237 ioctl 5204 20375000 returned -22
nla_parse: 5 callbacks suppressed
netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'.
netlink: 6 bytes leftover after parsing attributes in process `::'.
netlink: 13 bytes leftover after parsing attributes in process `syz-executor2'.
netlink: 13 bytes leftover after parsing attributes in process `syz-executor2'.
binder: 9394:9405 ioctl 5422 0 returned -22
device lo left promiscuous mode
binder: 9394:9412 ioctl 5422 0 returned -22
device lo entered promiscuous mode
device lo left promiscuous mode
netlink: 3 bytes leftover after parsing attributes in process `syz-executor6'.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=63196 sclass=netlink_route_socket pig=9554 comm=syz-executor4
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=63196 sclass=netlink_route_socket pig=9554 comm=syz-executor4
FAULT_FLAG_ALLOW_RETRY missing 30
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 9577 Comm: syz-executor5 Tainted: G    B           4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801cec77780 ffffffff81d93149 ffff8801cec77a60 0000000000000000
 ffff8801c7d05010 ffff8801cec77950 ffff8801c7d04f00 ffff8801cec77978
 ffffffff81660dc8 ffff8801cec778d0 0000000000000000 00000001cacbf067
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
 [<ffffffff815b2228>] SYSC_select fs/select.c:652 [inline]
 [<ffffffff815b2228>] SyS_select+0x158/0x1e0 fs/select.c:634
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 9550 Comm: syz-executor5 Tainted: G    B           4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d09e79a0 ffffffff81d93149 ffff8801d09e7c80 0000000000000000
 ffff8801c7d05010 ffff8801d09e7b70 ffff8801c7d04f00 ffff8801d09e7b98
 ffffffff81660dc8 ffff8801d09e7af0 ffff8801a76407f8 00000001cacbf067
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=21
binder: 9618:9619 ioctl 4b44 20001ff8 returned -22
binder: 9618:9619 ioctl 4b44 20001ff8 returned -22
binder: 9641:9644 ioctl 2403 7fff returned -22
netlink: 4 bytes leftover after parsing attributes in process `syz-executor3'.
binder: 9641:9647 ioctl 2403 7fff returned -22
netlink: 4 bytes leftover after parsing attributes in process `syz-executor3'.
CPU: 0 PID: 9567 Comm: syz-executor5 Tainted: G    B           4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d5427960 ffffffff81d93149 ffff8801d5427c40 0000000000000000
 ffff8801c7d05010 ffff8801d5427b30 ffff8801c7d04f00 ffff8801d5427b58
 ffffffff81660dc8 ffff8801d5427ab0 0000000000000000 00000001cacbf067
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
 [<ffffffff8116a374>] SyS_rt_sigqueueinfo+0x24/0x30 kernel/signal.c:2967
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
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
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)
binder: 9665:9671 ioctl 40605346 20000fa4 returned -22
pktgen: Initialization failed for all threads
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=9690 comm=syz-executor4
binder: 9665:9671 ioctl 40605346 20000fa4 returned -22
devpts: called with bogus options
devpts: called with bogus options
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
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=9727 comm=syz-executor5
netlink: 11 bytes leftover after parsing attributes in process `syz-executor3'.
binder_alloc: binder_alloc_mmap_handler: 9721 20000000-20400000 already mapped failed -16
netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'.
device lo entered promiscuous mode
9pnet_virtio: no channels available for device ./file0
9pnet_virtio: no channels available for device ./file0
9pnet_virtio: no channels available for device ./file0
9pnet_virtio: no channels available for device ./file0
device syz5 entered promiscuous mode
device syz5 left promiscuous mode
device syz5 entered promiscuous mode
loop_reread_partitions: partition scan of loop5 () failed (rc=-13)
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=10 sclass=netlink_route_socket pig=10183 comm=syz-executor5
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=10 sclass=netlink_route_socket pig=10195 comm=syz-executor5
IPVS: set_ctl: invalid protocol: 31912 1.136.255.255:39483 F
IPVS: set_ctl: invalid protocol: 31912 1.136.255.255:39483 F
device lo entered promiscuous mode
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10381 comm=syz-executor0
IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready
A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check.
IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready
A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check.
binder: 10416:10417 ioctl 4b3b 81 returned -22
binder: 10416:10443 ioctl 4b3b 81 returned -22

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2017/09/30 15:48 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.