================================================================== BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801c6a04ed8 BUG: KASAN: use-after-free in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801c6a04ed8 BUG: KASAN: use-after-free in static_key_count include/linux/jump_label.h:174 [inline] at addr ffff8801c6a04ed8 BUG: KASAN: use-after-free in static_key_false include/linux/jump_label.h:184 [inline] at addr ffff8801c6a04ed8 BUG: KASAN: use-after-free in perf_sw_event include/linux/perf_event.h:1039 [inline] at addr ffff8801c6a04ed8 BUG: KASAN: use-after-free in __do_page_fault+0xc80/0xd70 arch/x86/mm/fault.c:1438 at addr ffff8801c6a04ed8 Read of size 8 by task syz-executor7/7608 CPU: 0 PID: 7608 Comm: syz-executor7 Not tainted 4.9.61-ga93e312 #85 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cc18fd88 ffffffff81d91589 ffff8801da155140 ffff8801c6a04e88 ffff8801c6a04f40 ffffed0038d409db ffff8801c6a04ed8 ffff8801cc18fdb0 ffffffff8153c1bc ffffed0038d409db 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 ffff8801c6a04e88, in cache vm_area_struct size: 184 Allocated: PID = 7608 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 = 7615 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: ffff8801c6a04d80: fc fc fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801c6a04e00: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc >ffff8801c6a04e80: fc fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801c6a04f00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8801c6a04f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== binder: 7634:7647 ioctl 40106437 20899000 returned -22 binder: 7634:7647 ioctl 8903 20af0ffc returned -22 binder: 7634:7647 ioctl 40106437 20899000 returned -22 binder: 7634:7647 ioctl 8903 20af0ffc returned -22 netlink: 11 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor4'. SELinux: unrecognized netlink message: protocol=9 nlmsg_type=0 sclass=netlink_audit_socket pig=7740 comm=syz-executor5 SELinux: unrecognized netlink message: protocol=9 nlmsg_type=0 sclass=netlink_audit_socket pig=7750 comm=syz-executor5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=4888 sclass=netlink_route_socket pig=7819 comm=syz-executor7 device gre0 entered promiscuous mode skbuff: bad partial csum: csum=98/65532 len=264 netlink: 4 bytes leftover after parsing attributes in process `syz-executor6'. skbuff: bad partial csum: csum=98/65532 len=264 IPVS: Creating netns size=2536 id=19 IPVS: Creating netns size=2536 id=20 netlink: 4 bytes leftover after parsing attributes in process `syz-executor6'. Option ' Option ' SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=7947 comm=syz-executor0 netlink: 7 bytes leftover after parsing attributes in process `syz-executor0'. SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=7959 comm=syz-executor0 tty_warn_deprecated_flags: 'syz-executor1' is using deprecated serial flags (with no effect): 00008000 tty_warn_deprecated_flags: 'syz-executor1' is using deprecated serial flags (with no effect): 00008000 keychord: invalid keycode count 0 keychord: invalid keycode count 0 IPVS: Creating netns size=2536 id=21 9pnet_virtio: no channels available for device ./file0 9pnet_virtio: no channels available for device ./file0 device lo entered promiscuous mode nla_parse: 5 callbacks suppressed netlink: 6 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 6 bytes leftover after parsing attributes in process `syz-executor2'. device gre0 entered promiscuous mode binder: 8357:8366 ioctl 40082404 20000ff8 returned -22 binder: 8357:8366 ioctl c0086420 20a5cff8 returned -22 netlink: 2 bytes leftover after parsing attributes in process `syz-executor7'. device gre0 entered promiscuous mode device gre0 left promiscuous mode netlink: 2 bytes leftover after parsing attributes in process `syz-executor7'. binder: 8357:8366 ioctl 40082404 20000ff8 returned -22 binder: 8357:8381 ioctl c0086420 20a5cff8 returned -22 device gre0 entered promiscuous mode device gre0 left promiscuous mode device gre0 entered promiscuous mode netlink: 16 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 73 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 73 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor4'. keychord: unsupported version 0 keychord: unsupported version 0