==================================================================
BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801d6f91430
BUG: KASAN: use-after-free in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801d6f91430
BUG: KASAN: use-after-free in static_key_count include/linux/jump_label.h:174 [inline] at addr ffff8801d6f91430
BUG: KASAN: use-after-free in static_key_false include/linux/jump_label.h:184 [inline] at addr ffff8801d6f91430
BUG: KASAN: use-after-free in perf_sw_event include/linux/perf_event.h:1039 [inline] at addr ffff8801d6f91430
BUG: KASAN: use-after-free in __do_page_fault+0xc80/0xd70 arch/x86/mm/fault.c:1438 at addr ffff8801d6f91430
Read of size 8 by task syz-executor2/14816
CPU: 0 PID: 14816 Comm: syz-executor2 Not tainted 4.9.62-gf09daf1 #91
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801ac107d88 ffffffff81d94429 ffff8801da155140 ffff8801d6f913e0
 ffff8801d6f91498 ffffed003adf2286 ffff8801d6f91430 ffff8801ac107db0
 ffffffff8153e3ac ffffed003adf2286 ffff8801da155140 0000000000000000
Call Trace:
 [<ffffffff81d94429>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94429>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153e3ac>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160
 [<ffffffff8153e66c>] print_address_description mm/kasan/report.c:198 [inline]
 [<ffffffff8153e66c>] kasan_report_error mm/kasan/report.c:287 [inline]
 [<ffffffff8153e66c>] kasan_report.part.1+0x21c/0x500 mm/kasan/report.c:309
 [<ffffffff8153ea09>] kasan_report mm/kasan/report.c:330 [inline]
 [<ffffffff8153ea09>] __asan_report_load8_noabort+0x29/0x30 mm/kasan/report.c:330
 [<ffffffff810e1b10>] __read_once_size include/linux/compiler.h:243 [inline]
 [<ffffffff810e1b10>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
 [<ffffffff810e1b10>] static_key_count include/linux/jump_label.h:174 [inline]
 [<ffffffff810e1b10>] static_key_false include/linux/jump_label.h:184 [inline]
 [<ffffffff810e1b10>] perf_sw_event include/linux/perf_event.h:1039 [inline]
 [<ffffffff810e1b10>] __do_page_fault+0xc80/0xd70 arch/x86/mm/fault.c:1438
 [<ffffffff810e1c27>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838b0658>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
Object at ffff8801d6f913e0, in cache vm_area_struct size: 184
Allocated:
PID = 14816
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
 save_stack+0x43/0xd0 mm/kasan/kasan.c:495
 set_track mm/kasan/kasan.c:507 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537
 slab_post_alloc_hook mm/slab.h:417 [inline]
 slab_alloc_node mm/slub.c:2715 [inline]
 slab_alloc mm/slub.c:2723 [inline]
 kmem_cache_alloc+0xba/0x290 mm/slub.c:2728
 kmem_cache_zalloc include/linux/slab.h:626 [inline]
 mmap_region+0x587/0xfd0 mm/mmap.c:1662
 do_mmap+0x57b/0xbe0 mm/mmap.c:1473
 do_mmap_pgoff include/linux/mm.h:2014 [inline]
 vm_mmap_pgoff+0x16b/0x1b0 mm/util.c:305
 SYSC_mmap_pgoff mm/mmap.c:1523 [inline]
 SyS_mmap_pgoff+0xd0/0x560 mm/mmap.c:1481
 SYSC_mmap arch/x86/kernel/sys_x86_64.c:95 [inline]
 SyS_mmap+0x16/0x20 arch/x86/kernel/sys_x86_64.c:86
 entry_SYSCALL_64_fastpath+0x23/0xc6
Freed:
PID = 14833
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
 save_stack+0x43/0xd0 mm/kasan/kasan.c:495
 set_track mm/kasan/kasan.c:507 [inline]
 kasan_slab_free+0x73/0xc0 mm/kasan/kasan.c:571
 slab_free_hook mm/slub.c:1355 [inline]
 slab_free_freelist_hook mm/slub.c:1377 [inline]
 slab_free mm/slub.c:2958 [inline]
 kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980
 remove_vma+0x11d/0x160 mm/mmap.c:175
 remove_vma_list mm/mmap.c:2482 [inline]
 do_munmap+0x7ff/0xeb0 mm/mmap.c:2705
 mmap_region+0x14d/0xfd0 mm/mmap.c:1635
 do_mmap+0x57b/0xbe0 mm/mmap.c:1473
 do_mmap_pgoff include/linux/mm.h:2014 [inline]
 vm_mmap_pgoff+0x16b/0x1b0 mm/util.c:305
 SYSC_mmap_pgoff mm/mmap.c:1523 [inline]
 SyS_mmap_pgoff+0xd0/0x560 mm/mmap.c:1481
 SYSC_mmap arch/x86/kernel/sys_x86_64.c:95 [inline]
 SyS_mmap+0x16/0x20 arch/x86/kernel/sys_x86_64.c:86
 entry_SYSCALL_64_fastpath+0x23/0xc6
Memory state around the buggy address:
 ffff8801d6f91300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8801d6f91380: fb fb fb fb fc fc fc fc fc fc fc fc fb fb fb fb
>ffff8801d6f91400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                     ^
 ffff8801d6f91480: fb fb fb fc fc fc fc fc fc fc fc fb fb fb fb fb
 ffff8801d6f91500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
device gre0 entered promiscuous mode
binder: 14978:14981 ioctl 40045201 20000000 returned -22
binder: 14978:14981 ioctl 80045200 20000ffc returned -22
binder: 15004:15007 ioctl 40084503 206baff8 returned -22
binder: 14978:14997 ioctl 40045201 20000000 returned -22
binder: 15004:15012 ioctl 40084503 206baff8 returned -22
binder: 14978:14997 ioctl 80045200 20000ffc returned -22
ALSA: seq fatal error: cannot create timer (-19)
binder: 15113:15114 ioctl c08c5335 209dcf74 returned -22
netlink: 13 bytes leftover after parsing attributes in process `syz-executor6'.
binder: 15113:15132 ioctl c08c5335 209dcf74 returned -22
IPVS: Creating netns size=2536 id=29
IPv6: Can't replace route, no match found
IPVS: Creating netns size=2536 id=30
device gre0 entered promiscuous mode
SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=15261 comm=syz-executor5
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=202 sclass=netlink_route_socket pig=15261 comm=syz-executor5
SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=15261 comm=syz-executor5
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=202 sclass=netlink_route_socket pig=15261 comm=syz-executor5
SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=15325 comm=syz-executor5
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=202 sclass=netlink_route_socket pig=15325 comm=syz-executor5
SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=15325 comm=syz-executor5
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=202 sclass=netlink_route_socket pig=15365 comm=syz-executor5
device gre0 entered promiscuous mode
device lo entered promiscuous mode
device lo left promiscuous mode
device lo entered promiscuous mode
device lo left promiscuous mode
binder: 15631:15634 ioctl 40045201 20000000 returned -22
binder: 15631:15634 ioctl 80045200 20000ffc returned -22
netlink: 1 bytes leftover after parsing attributes in process `syz-executor2'.
binder: 15631:15634 ioctl 40045201 20000000 returned -22
netlink: 1 bytes leftover after parsing attributes in process `syz-executor2'.
binder: 15631:15634 ioctl 80045200 20000ffc returned -22
IPVS: Creating netns size=2536 id=31
binder: 15739:15740 ioctl c08c5335 209dcf74 returned -22
binder: 15739:15740 ioctl c08c5335 209dcf74 returned -22
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
netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 5 bytes leftover after parsing attributes in process `syz-executor1'.
netlink: 5 bytes leftover after parsing attributes in process `syz-executor1'.
netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'.
netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'.
binder: 15908:15915 ioctl 5603 20e9affa returned -22
binder: 15908:15934 ioctl 541b 207c5ffc returned -22
binder: 15908:15915 ioctl 4b69 20fb7f68 returned -22
binder: 15908:15934 ioctl 5603 20e9affa returned -22
binder: 15908:15915 ioctl 541b 207c5ffc returned -22
tmpfs: No value for mount option '‹'
binder: 15908:15915 ioctl 4b69 20fb7f68 returned -22
tmpfs: No value for mount option '‹'
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 0 PID: 16051 Comm: syz-executor2 Tainted: G    B           4.9.62-gf09daf1 #91
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801a48ef940 ffffffff81d94429 ffff8801a48efc20 0000000000000000
 ffff8801caccc110 ffff8801a48efb10 ffff8801caccc000 ffff8801a48efb38
 ffffffff816623c7 ffffffff8389f9d5 ffff8801a48efa90 00000001cd1a3067
Call Trace:
 [<ffffffff81d94429>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94429>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff816623c7>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
 [<ffffffff814d16c1>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814d16c1>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814d16c1>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814d16c1>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e1447>] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396
 [<ffffffff810e1c27>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838b0658>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838af485>] entry_SYSCALL_64_fastpath+0x23/0xc6
device gre0 entered promiscuous mode
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 0 PID: 16051 Comm: syz-executor2 Tainted: G    B           4.9.62-gf09daf1 #91
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801a48ef940 ffffffff81d94429 ffff8801a48efc20 0000000000000000
 ffff8801caccda90[   85.266391] binder: 16094:16105 ioctl 40082404 20000ff8 returned -22
binder: 16094:16105 ioctl 8914 20c01000 returned -22
 ffff8801a48efb10 ffff8801caccd980 ffff8801a48efb38
 ffffffff816623c7 1ffff1003491df2f ffff8801a48efa90 00000001a867d067
Call Trace:
 [<ffffffff81d94429>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94429>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff816623c7>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
 [<ffffffff814d16c1>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814d16c1>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814d16c1>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814d16c1>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
binder: 16094:16117 ioctl 40082404 20000ff8 returned -22
binder: 16094:16117 ioctl 8914 20c01000 returned -22
 [<ffffffff810e1447>] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396
 [<ffffffff810e1c27>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838b0658>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838af485>] entry_SYSCALL_64_fastpath+0x23/0xc6
IPVS: Creating netns size=2536 id=32
netlink: 5 bytes leftover after parsing attributes in process `syz-executor2'.
device gre0 entered 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
sock: sock_set_timeout: `syz-executor3' (pid 16301) tries to set negative timeout
ALSA: seq fatal error: cannot create timer (-19)
ALSA: seq fatal error: cannot create timer (-19)
device gre0 entered promiscuous mode
IPVS: Creating netns size=2536 id=33
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=0 sclass=netlink_audit_socket pig=16445 comm=syz-executor0
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 16448 Comm: syz-executor1 Tainted: G    B           4.9.62-gf09daf1 #91
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801cb90f8b0 ffffffff81d94429 ffff8801cb90fb90 0000000000000000
 ffff8801caccce90 ffff8801cb90fa80 ffff8801cacccd80 ffff8801cb90faa8
 ffffffff816623c7 ffffffff8389dcd3 ffff8801cb90fa00 00000001a970f067
Call Trace:
 [<ffffffff81d94429>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94429>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff816623c7>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
FAULT_FLAG_ALLOW_RETRY missing 30
FAULT_FLAG_ALLOW_RETRY missing 30
 [<ffffffff814d16c1>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814d16c1>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814d16c1>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814d16c1>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e1447>] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396
 [<ffffffff810e1c27>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838b0658>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff812bab0c>] SyS_clock_adjtime+0x1c/0x30 kernel/time/posix-timers.c:1045
 [<ffffffff838af485>] entry_SYSCALL_64_fastpath+0x23/0xc6
CPU: 0 PID: 16465 Comm: syz-executor0 Tainted: G    B           4.9.62-gf09daf1 #91
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801a97479c0 ffffffff81d94429 ffff8801a9747ca0 0000000000000000
 ffff8801ac3fb490 ffff8801a9747b90 ffff8801ac3fb380 ffff8801a9747bb8
 ffffffff816623c7 579e68bdeec93e07 ffff8801a9747b10 00000001a8497067
Call Trace:
 [<ffffffff81d94429>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94429>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff816623c7>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
 [<ffffffff814d16c1>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814d16c1>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814d16c1>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814d16c1>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e1447>] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396
 [<ffffffff810e1c27>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838b0658>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff81bbe46b>] SYSC_keyctl security/keys/keyctl.c:1604 [inline]
 [<ffffffff81bbe46b>] SyS_keyctl+0x1fb/0x230 security/keys/keyctl.c:1592
 [<ffffffff838af485>] entry_SYSCALL_64_fastpath+0x23/0xc6
CPU: 1 PID: 16470 Comm: syz-executor0 Tainted: G    B           4.9.62-gf09daf1 #91
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801aa387930 ffffffff81d94429 ffff8801aa387c10 0000000000000000
 ffff8801ac3fb490 ffff8801aa387b00 ffff8801ac3fb380 ffff8801aa387b28
 ffffffff816623c7 0000000000000000 ffff8801aa387a80 00000001a8497067
Call Trace:
 [<ffffffff81d94429>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94429>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff816623c7>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
 [<ffffffff814d16c1>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814d16c1>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814d16c1>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814d16c1>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e1447>] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396
 [<ffffffff810e1c27>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838b0658>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838af485>] entry_SYSCALL_64_fastpath+0x23/0xc6
FAULT_FLAG_ALLOW_RETRY missing 30
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 0 PID: 16456 Comm: syz-executor0 Tainted: G    B           4.9.62-gf09daf1 #91
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801cc5bf9c0 ffffffff81d94429 ffff8801cc5bfca0 0000000000000000
 ffff8801caccc890 ffff8801cc5bfb90 ffff8801caccc780 ffff8801cc5bfbb8
 ffffffff816623c7 6a92dbc5a4a55307 ffff8801cc5bfb10 00000001ce5d0067
Call Trace:
 [<ffffffff81d94429>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94429>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff816623c7>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
 [<ffffffff814d16c1>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814d16c1>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814d16c1>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814d16c1>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e1447>] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396
 [<ffffffff810e1c27>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838b0658>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff81bbe46b>] SYSC_keyctl security/keys/keyctl.c:1604 [inline]
 [<ffffffff81bbe46b>] SyS_keyctl+0x1fb/0x230 security/keys/keyctl.c:1592
 [<ffffffff838af485>] entry_SYSCALL_64_fastpath+0x23/0xc6
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 0 PID: 16470 Comm: syz-executor0 Tainted: G    B           4.9.62-gf09daf1 #91
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801aa387930 ffffffff81d94429 ffff8801aa387c10 0000000000000000
 ffff8801caccc890 ffff8801aa387b00 ffff8801caccc780 ffff8801aa387b28
 ffffffff816623c7 ffff8801aa387ac8 ffff8801aa387a80 00000001ce5d0067
Call Trace:
 [<ffffffff81d94429>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94429>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff816623c7>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
 [<ffffffff814d16c1>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814d16c1>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814d16c1>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814d16c1>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e1447>] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396
 [<ffffffff810e1c27>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838b0658>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838af485>] entry_SYSCALL_64_fastpath+0x23/0xc6
CPU: 1 PID: 16465 Comm: syz-executor0 Tainted: G    B           4.9.62-gf09daf1 #91
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801a9747960 ffffffff81d94429 ffff8801a9747c40 0000000000000000
 ffff8801caccc890 ffff8801a9747b30 ffff8801caccc780 ffff8801a9747b58
 ffffffff816623c7 ffff8801c7963000[   87.890579] FAULT_FLAG_ALLOW_RETRY missing 30
 ffff8801a9747ab0 00000001ce5d0067
 [<ffffffff81d94429>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94429>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
FAULT_FLAG_ALLOW_RETRY missing 30
 [<ffffffff816623c7>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
 [<ffffffff814d16c1>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814d16c1>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814d16c1>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814d16c1>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e1447>] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396
 [<ffffffff810e1c27>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838b0658>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838af485>] entry_SYSCALL_64_fastpath+0x23/0xc6
CPU: 0 PID: 16456 Comm: syz-executor0 Tainted: G    B           4.9.62-gf09daf1 #91
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801cc5bf990 ffffffff81d94429 ffff8801cc5bfc70 0000000000000000
 ffff8801caccc890 ffff8801cc5bfb60 ffff8801caccc780 ffff8801cc5bfb88
 ffffffff816623c7 ffff8801a6764800 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff81d94429>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94429>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff816623c7>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
 [<ffffffff814d16c1>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814d16c1>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814d16c1>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814d16c1>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e1447>] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396
 [<ffffffff810e1c27>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838b0658>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff81bbad2c>] copy_from_user arch/x86/include/asm/uaccess.h:702 [inline]
 [<ffffffff81bbad2c>] keyctl_update_key+0x8c/0x120 security/keys/keyctl.c:337
 [<ffffffff81bbe46b>] SYSC_keyctl security/keys/keyctl.c:1604 [inline]
 [<ffffffff81bbe46b>] SyS_keyctl+0x1fb/0x230 security/keys/keyctl.c:1592
 [<ffffffff838af485>] entry_SYSCALL_64_fastpath+0x23/0xc6
CPU: 1 PID: 16470 Comm: syz-executor0 Tainted: G    B           4.9.62-gf09daf1 #91
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801aa387900 ffffffff81d94429 ffff8801aa387be0 0000000000000000
 ffff8801caccc890 ffff8801aa387ad0 ffff8801caccc780 ffff8801aa387af8
 ffffffff816623c7 ffffffff00000002 ffff880100000070 0000000000440000
Call Trace:
 [<ffffffff81d94429>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94429>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff816623c7>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
 [<ffffffff814d16c1>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814d16c1>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814d16c1>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814d16c1>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e1447>] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396
 [<ffffffff810e1c27>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838b0658>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff81617ac6>] copy_from_user arch/x86/include/asm/uaccess.h:702 [inline]
 [<ffffffff81617ac6>] SYSC_futimesat fs/utimes.c:196 [inline]
 [<ffffffff81617ac6>] SyS_futimesat fs/utimes.c:189 [inline]
 [<ffffffff81617ac6>] SYSC_utimes fs/utimes.c:220 [inline]
 [<ffffffff81617ac6>] SyS_utimes+0xb6/0x1b0 fs/utimes.c:217
 [<ffffffff838af485>] 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
nla_parse: 1 callbacks suppressed
netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=16543 comm=syz-executor0
netlink: 11 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 11 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor2'.
device gre0 entered promiscuous mode
sg_write: data in/out 822404280/197 bytes for SCSI command 0x12-- guessing data in;
   program syz-executor0 not setting count and/or reply_len properly
binder: 16661:16668 ioctl c0406400 20c30fc0 returned -22
binder: 16661:16668 ioctl c0406400 20c30fc0 returned -22
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=32512 sclass=netlink_route_socket pig=16669 comm=syz-executor6
netlink: 8 bytes leftover after parsing attributes in process `syz-executor2'.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=32512 sclass=netlink_route_socket pig=16669 comm=syz-executor6
device lo entered promiscuous mode
IPVS: Creating netns size=2536 id=34
device lo left promiscuous mode
netlink: 5 bytes leftover after parsing attributes in process `syz-executor3'.
device lo entered promiscuous mode
netlink: 5 bytes leftover after parsing attributes in process `syz-executor3'.
device lo left promiscuous mode