================================================================== BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801a9515ce8 BUG: KASAN: use-after-free in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801a9515ce8 BUG: KASAN: use-after-free in static_key_count include/linux/jump_label.h:174 [inline] at addr ffff8801a9515ce8 BUG: KASAN: use-after-free in static_key_false include/linux/jump_label.h:184 [inline] at addr ffff8801a9515ce8 BUG: KASAN: use-after-free in perf_sw_event include/linux/perf_event.h:1039 [inline] at addr ffff8801a9515ce8 BUG: KASAN: use-after-free in __do_page_fault+0xc80/0xd70 arch/x86/mm/fault.c:1438 at addr ffff8801a9515ce8 Read of size 8 by task syz-executor7/14743 CPU: 0 PID: 14743 Comm: syz-executor7 Not tainted 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801c9bcfd88 ffffffff81d90429 ffff8801da155140 ffff8801a9515c98 ffff8801a9515d50 ffffed00352a2b9d ffff8801a9515ce8 ffff8801c9bcfdb0 ffffffff8153a3ac ffffed00352a2b9d 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 ffff8801a9515c98, in cache vm_area_struct size: 184 Allocated: PID = 14743 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 = 14769 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: ffff8801a9515b80: fc fc fc fc fb fb fb fb fb fb fb fb fb fb fb fb ffff8801a9515c00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc >ffff8801a9515c80: fc fc fc fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801a9515d00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc ffff8801a9515d80: fc fc fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== netlink: 13 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. PF_BRIDGE: RTM_SETLINK with unknown ifindex IPVS: Creating netns size=2536 id=45 PF_BRIDGE: RTM_SETLINK with unknown ifindex 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 IPVS: Creating netns size=2536 id=46 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 device gre0 left promiscuous mode binder: 15089:15091 ioctl c0286404 20c0dfd8 returned -22 binder: 15089:15111 ioctl c0286404 20c0dfd8 returned -22 device gre0 entered promiscuous mode FAULT_FLAG_ALLOW_RETRY missing 30 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 15136 Comm: syz-executor0 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d4e97890 ffffffff81d90429 ffff8801d4e97b70 0000000000000000 ffff8801ce048890 ffff8801d4e97a60 ffff8801ce048780 ffff8801d4e97a88 ffffffff8165e3c7 ffff8801db321418 ffff8801d4e979e0 00000001cfd67067 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 [] getname_flags+0x10e/0x580 fs/namei.c:148 [] getname+0x19/0x20 fs/namei.c:208 [] do_sys_open+0x21d/0x4c0 fs/open.c:1066 [] SYSC_openat fs/open.c:1099 [inline] [] SyS_openat+0x30/0x40 fs/open.c:1093 [] entry_SYSCALL_64_fastpath+0x23/0xc6 CPU: 0 PID: 15146 Comm: syz-executor0 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d5f9f930 ffffffff81d90429 ffff8801d5f9fc10 0000000000000000 ffff8801ce048890 ffff8801d5f9fb00 ffff8801ce048780 ffff8801d5f9fb28 ffffffff8165e3c7 ffff8801d5f9fac8 ffff8801d5f9fa80 00000001cfd67067 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 selinux_nlmsg_perm: 7 callbacks suppressed SELinux: unrecognized netlink message: protocol=0 nlmsg_type=35098 sclass=netlink_route_socket pig=15354 comm=syz-executor6 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=35098 sclass=netlink_route_socket pig=15354 comm=syz-executor6 device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode device lo left promiscuous mode netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. device lo entered promiscuous mode device lo left promiscuous mode netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. device gre0 entered promiscuous mode device lo entered promiscuous mode netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. device gre0 entered promiscuous mode device lo left promiscuous mode netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'. IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE IPv6: NLM_F_CREATE should be set when creating new route IPv6: NLM_F_CREATE should be set when creating new route device lo entered promiscuous mode device lo left promiscuous mode IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE IPv6: NLM_F_CREATE should be set when creating new route IPv6: NLM_F_CREATE should be set when creating new route device gre0 entered promiscuous mode nla_parse: 1 callbacks suppressed netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. device gre0 entered promiscuous mode netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=2561 sclass=netlink_route_socket pig=16324 comm=syz-executor2 device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=2561 sclass=netlink_route_socket pig=16324 comm=syz-executor2 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=2561 sclass=netlink_route_socket pig=16516 comm=syz-executor0 device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=2561 sclass=netlink_route_socket pig=16545 comm=syz-executor0 binder: 16583:16585 ioctl 5418 20000000 returned -22 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=16722 comm=syz-executor5 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=16737 comm=syz-executor5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=16998 comm=syz-executor0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=17005 comm=syz-executor0 selinux_nlmsg_perm: 2 callbacks suppressed SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=17709 comm=syz-executor5 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=17709 comm=syz-executor5 binder: 18256:18257 ioctl 4b35 9 returned -22 binder: 18256:18257 ioctl 4b35 9 returned -22