================================================================== BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801c6d7caf8 BUG: KASAN: use-after-free in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801c6d7caf8 BUG: KASAN: use-after-free in static_key_count include/linux/jump_label.h:174 [inline] at addr ffff8801c6d7caf8 BUG: KASAN: use-after-free in static_key_false include/linux/jump_label.h:184 [inline] at addr ffff8801c6d7caf8 BUG: KASAN: use-after-free in perf_sw_event include/linux/perf_event.h:1039 [inline] at addr ffff8801c6d7caf8 BUG: KASAN: use-after-free in __do_page_fault+0xc80/0xd70 arch/x86/mm/fault.c:1438 at addr ffff8801c6d7caf8 Read of size 8 by task syz-executor3/14367 CPU: 0 PID: 14367 Comm: syz-executor3 Not tainted 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a9f87d88 ffffffff81d90429 ffff8801da155140 ffff8801c6d7caa8 ffff8801c6d7cb60 ffffed0038daf95f ffff8801c6d7caf8 ffff8801a9f87db0 ffffffff8153a3ac ffffed0038daf95f ffff8801da155140 0000000000000000 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160 [] print_address_description mm/kasan/report.c:198 [inline] [] kasan_report_error mm/kasan/report.c:287 [inline] [] kasan_report.part.1+0x21c/0x500 mm/kasan/report.c:309 [] kasan_report mm/kasan/report.c:330 [inline] [] __asan_report_load8_noabort+0x29/0x30 mm/kasan/report.c:330 [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] static_key_count include/linux/jump_label.h:174 [inline] [] static_key_false include/linux/jump_label.h:184 [inline] [] perf_sw_event include/linux/perf_event.h:1039 [inline] [] __do_page_fault+0xc80/0xd70 arch/x86/mm/fault.c:1438 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 Object at ffff8801c6d7caa8, in cache vm_area_struct size: 184 Allocated: PID = 14367 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:2018 [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 = 14371 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:2018 [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: ffff8801c6d7c980: fc fc fc fc fc fc fb fb fb fb fb fb fb fb fb fb ffff8801c6d7ca00: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc >ffff8801c6d7ca80: fc fc fc fc fc fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801c6d7cb00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff8801c6d7cb80: fc fc fc fc fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== SELinux: unrecognized netlink message: protocol=0 nlmsg_type=8145 sclass=netlink_route_socket pig=14370 comm=syz-executor0 pktgen: kernel_thread() failed for cpu 0 program syz-executor0 is using a deprecated SCSI ioctl, please convert it to SG_IO sd 0:0:1:0: ioctl_internal_command: ILLEGAL REQUEST asc=0x20 ascq=0x0 program syz-executor0 is using a deprecated SCSI ioctl, please convert it to SG_IO sd 0:0:1:0: ioctl_internal_command: ILLEGAL REQUEST asc=0x20 ascq=0x0 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) pktgen: Initialization failed for all threads device lo left promiscuous mode netlink: 2 bytes leftover after parsing attributes in process `syz-executor5'. IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE IPv6: NLM_F_CREATE should be set when creating new route FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 14572 Comm: syz-executor6 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cce47930 ffffffff81d90429 ffff8801cce47c10 0000000000000000 ffff8801c7f6c110 ffff8801cce47b00 ffff8801c7f6c000 ffff8801cce47b28 ffffffff8165e3c7 ffff8801cce47ac8 ffff8801cce47a80 00000001cfd89067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323 [] do_anonymous_page mm/memory.c:2747 [inline] [] handle_pte_fault mm/memory.c:3488 [inline] [] __handle_mm_fault mm/memory.c:3577 [inline] [] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614 [] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 14555 Comm: syz-executor6 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801c9787710 ffffffff81d90429 ffff8801c97879f0 0000000000000000 ffff8801a8205910 ffff8801c97878e0 ffff8801a8205800 ffff8801c9787908 ffffffff8165e3c7 ffffffff84649720 ffff8801c9787860 00000001d604f067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323 [] do_anonymous_page mm/memory.c:2747 [inline] [] handle_pte_fault mm/memory.c:3488 [inline] [] __handle_mm_fault mm/memory.c:3577 [inline] [] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614 [] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] SYSC_select fs/select.c:652 [inline] [] SyS_select+0x158/0x1e0 fs/select.c:634 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 14572 Comm: syz-executor6 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cce47930 ffffffff81d90429 ffff8801cce47c10 0000000000000000 ffff8801a8205910 ffff8801cce47b00 ffff8801a8205800 ffff8801cce47b28 ffffffff8165e3c7 ffff8801cce47ac8 ffff8801cce47a80 00000001d604f067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323 [] do_anonymous_page mm/memory.c:2747 [inline] [] handle_pte_fault mm/memory.c:3488 [inline] [] __handle_mm_fault mm/memory.c:3577 [inline] [] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614 [] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] entry_SYSCALL_64_fastpath+0x23/0xc6 IPv6: NLM_F_CREATE should be set when creating new route device lo entered promiscuous mode device lo left promiscuous mode pktgen: kernel_thread() failed for cpu 0 pktgen: Cannot create thread for cpu 0 (-4) IPVS: Creating netns size=2536 id=29 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: 9 bytes leftover after parsing attributes in process `syz-executor7'. A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check. netlink: 9 bytes leftover after parsing attributes in process `syz-executor7'. A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check. netlink: 8 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor1'. 9pnet_virtio: no channels available for device ./file0 9pnet_virtio: no channels available for device ./file0 TCP: request_sock_TCP: Possible SYN flooding on port 20006. Sending cookies. Check SNMP counters. TCP: request_sock_TCP: Possible SYN flooding on port 20006. Sending cookies. Check SNMP counters. device gre0 entered promiscuous mode device gre0 left promiscuous mode device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=257 sclass=netlink_route_socket pig=15040 comm=syz-executor4 Option ' ž"†u<<`ÔÍÞ€á/P}£$q_¥é2R¢ì’_ÛR!×]¬œ¡' to dns_resolver key: bad/missing value device gre0 entered promiscuous mode Option ' ž"†u<<`ÔÍÞ€á/P}£$q_¥é2R¢ì’_ÛR!×]¬œ¡' to dns_resolver key: bad/missing value IPVS: Creating netns size=2536 id=30 FAULT_FLAG_ALLOW_RETRY missing 30 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 15347 Comm: syz-executor6 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cb23f930 ffffffff81d90429 ffff8801cb23fc10 0000000000000000 ffff8801c7f6df10 ffff8801cb23fb00 ffff8801c7f6de00 ffff8801cb23fb28 ffffffff8165e3c7 ffff8801cb23fac8 ffff8801cb23fa80 00000001d7bbb067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323 [] do_anonymous_page mm/memory.c:2747 [inline] [] handle_pte_fault mm/memory.c:3488 [inline] [] __handle_mm_fault mm/memory.c:3577 [inline] [] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614 [] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] entry_SYSCALL_64_fastpath+0x23/0xc6 IPVS: Creating netns size=2536 id=31 IPVS: Creating netns size=2536 id=32 CPU: 1 PID: 15350 Comm: syz-executor6 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a82ef930 ffffffff81d90429 ffff8801a82efc10 0000000000000000 ffff8801c7f6df10 ffff8801a82efb00 ffff8801c7f6de00 ffff8801a82efb28 ffffffff8165e3c7 ffff8801a82efac8 ffff8801a82efa80 00000001d7bbb067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323 [] do_anonymous_page mm/memory.c:2747 [inline] [] handle_pte_fault mm/memory.c:3488 [inline] [] __handle_mm_fault mm/memory.c:3577 [inline] [] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614 [] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 15347 Comm: syz-executor6 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cb23f930 ffffffff81d90429 ffff8801cb23fc10 0000000000000000 ffff8801a8204710 ffff8801cb23fb00 ffff8801a8204600 ffff8801cb23fb28 ffffffff8165e3c7 ffff8801cb23fac8 ffff8801cb23fa80 00000001d7bbb067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323 [] do_anonymous_page mm/memory.c:2747 [inline] [] handle_pte_fault mm/memory.c:3488 [inline] [] __handle_mm_fault mm/memory.c:3577 [inline] [] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614 [] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 15350 Comm: syz-executor6 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a82ef930 ffffffff81d90429 ffff8801a82efc10 0000000000000000 ffff8801a8204710 ffff8801a82efb00 ffff8801a8204600 ffff8801a82efb28 ffffffff8165e3c7 ffff8801a9fbe000 0000000000000000 0000000000000000 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323 [] do_anonymous_page mm/memory.c:2747 [inline] [] handle_pte_fault mm/memory.c:3488 [inline] [] __handle_mm_fault mm/memory.c:3577 [inline] [] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614 [] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] entry_SYSCALL_64_fastpath+0x23/0xc6 nla_parse: 2 callbacks suppressed netlink: 22 bytes leftover after parsing attributes in process `syz-executor5'. PF_BRIDGE: RTM_SETLINK with unknown ifindex binder: 15447:15456 ioctl 541c 20dd8ff4 returned -22 PF_BRIDGE: RTM_SETLINK with unknown ifindex netlink: 22 bytes leftover after parsing attributes in process `syz-executor5'. binder_alloc: binder_alloc_mmap_handler: 15447 20000000-20400000 already mapped failed -16 binder: 15447:15456 ioctl 541c 20dd8ff4 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: 2 bytes leftover after parsing attributes in process `syz-executor7'. binder: 15485:15486 ioctl c0106426 20435ff0 returned -22 binder: 15494:15495 ioctl 5609 208daffa returned -22 binder: 15485:15512 ioctl c0106426 20435ff0 returned -22 device eql entered promiscuous mode skbuff: bad partial csum: csum=65534/0 len=32 binder: 15604:15606 ioctl 4b45 20306000 returned -22 binder: 15604:15606 ioctl 4b45 20306000 returned -22 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=15704 comm=syz-executor5 9pnet_virtio: no channels available for device H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H TCP: request_sock_TCPv6: Possible SYN flooding on port 20010. Sending cookies. Check SNMP counters. 9pnet_virtio: no channels available for device device gre0 entered promiscuous mode device lo entered promiscuous mode netlink: 5 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor7'. IPVS: Creating netns size=2536 id=33 pktgen: kernel_thread() failed for cpu 1 pktgen: Cannot create thread for cpu 1 (-4) IPVS: Creating netns size=2536 id=34 binder: 16034:16035 ioctl c00c642d 20191000 returned -22 binder: 16034:16035 ioctl c010640b 207d3000 returned -22 binder: 16034:16035 ioctl c008640a 20b8b000 returned -22 device lo entered promiscuous mode device lo left promiscuous mode binder: 16034:16035 ioctl c00c642d 20191000 returned -22 binder: 16034:16055 ioctl c010640b 207d3000 returned -22 binder: 16034:16035 ioctl c008640a 20b8b000 returned -22 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=770 sclass=netlink_route_socket pig=16069 comm=syz-executor5 device gre0 entered promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode Option 'Þ¾š„'' to dns_resolver key: bad/missing value SELinux: unrecognized netlink message: protocol=4 nlmsg_type=16 sclass=netlink_tcpdiag_socket pig=16087 comm=syz-executor4 netlink: 1 bytes leftover after parsing attributes in process `syz-executor2'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=770 sclass=netlink_route_socket pig=16069 comm=syz-executor5 Option 'Þ¾š„'' to dns_resolver key: bad/missing value SELinux: unrecognized netlink message: protocol=4 nlmsg_type=16 sclass=netlink_tcpdiag_socket pig=16101 comm=syz-executor4 øÿÿÿ: renamed from lo netlink: 9 bytes leftover after parsing attributes in process `syz-executor1'. A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check. device gre0 entered promiscuous mode skbuff: bad partial csum: csum=98/65532 len=113 netlink: 56 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor7'. FAULT_FLAG_ALLOW_RETRY missing 30 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 16262 Comm: syz-executor4 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a48b78b0 ffffffff81d90429 ffff8801a48b7b90 0000000000000000 ffff8801a8204290 ffff8801a48b7a80 ffff8801a8204180 ffff8801a48b7aa8 ffffffff8165e3c7 ffff8801c9861800 ffff8801a48b7a00 00000001ab102067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323 [] do_anonymous_page mm/memory.c:2747 [inline] [] handle_pte_fault mm/memory.c:3488 [inline] [] __handle_mm_fault mm/memory.c:3577 [inline] [] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614 [] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] entry_SYSCALL_64_fastpath+0x23/0xc6 CPU: 1 PID: 16277 Comm: syz-executor4 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a7ecf930 ffffffff81d90429 ffff8801a7ecfc10 0000000000000000 ffff8801a8204290 ffff8801a7ecfb00 ffff8801a8204180 ffff8801a7ecfb28 ffffffff8165e3c7 ffff8801a7ecfac8 ffff8801a7ecfa80 00000001ab102067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323 [] do_anonymous_page mm/memory.c:2747 [inline] [] handle_pte_fault mm/memory.c:3488 [inline] [] __handle_mm_fault mm/memory.c:3577 [inline] [] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614 [] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 16262 Comm: syz-executor4 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a48b78b0 ffffffff81d90429 ffff8801a48b7b90 0000000000000000 ffff8801abc36b90 ffff8801a48b7a80 ffff8801abc36a80 ffff8801a48b7aa8 ffffffff8165e3c7 ffff8801c9861800 ffff8801a48b7a00 00000001ab102067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323 [] do_anonymous_page mm/memory.c:2747 [inline] [] handle_pte_fault mm/memory.c:3488 [inline] [] __handle_mm_fault mm/memory.c:3577 [inline] [] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614 [] __do_page_fault+0x5b7/0xd70 arch/x86/mm/fault.c:1396 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] entry_SYSCALL_64_fastpath+0x23/0xc6 keychord: unsupported version 48