================================================================== BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801d10f9718 BUG: KASAN: use-after-free in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801d10f9718 BUG: KASAN: use-after-free in static_key_count include/linux/jump_label.h:174 [inline] at addr ffff8801d10f9718 BUG: KASAN: use-after-free in static_key_false include/linux/jump_label.h:184 [inline] at addr ffff8801d10f9718 BUG: KASAN: use-after-free in perf_sw_event include/linux/perf_event.h:1039 [inline] at addr ffff8801d10f9718 BUG: KASAN: use-after-free in __do_page_fault+0xc80/0xd70 arch/x86/mm/fault.c:1438 at addr ffff8801d10f9718 Read of size 8 by task syz-executor6/9410 CPU: 0 PID: 9410 Comm: syz-executor6 Not tainted 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801ac6cfd88[ 60.567984] device gre0 entered promiscuous mode ffffffff81d90429 ffff8801da155140 ffff8801d10f96c8 ffff8801d10f9780 ffffed003a21f2e3 ffff8801d10f9718 ffff8801ac6cfdb0 ffffffff8153a3ac ffffed003a21f2e3 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 ffff8801d10f96c8, in cache vm_area_struct size: 184 Allocated: PID = 9410 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 = 9430 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: ffff8801d10f9600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801d10f9680: fb fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb >ffff8801d10f9700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801d10f9780: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb ffff8801d10f9800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc ================================================================== binder: 9512:9518 ioctl 4b6a 204fd000 returned -22 binder: 9512:9518 ioctl 5411 20e27000 returned -22 FAULT_FLAG_ALLOW_RETRY missing 31 CPU: 1 PID: 9505 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 ffff8801c70d79a0 ffffffff81d90429 ffff8801c70d7c80 0000000000000000 ffff8801a64df190 ffff8801c70d7b70 ffff8801a64df080 ffff8801c70d7b98 ffffffff8165e3c7 ffff8801c70d79d0 ffffffff811b8ccd 0000000006e03700 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:2783 [inline] [] handle_pte_fault mm/memory.c:3488 [inline] [] __handle_mm_fault mm/memory.c:3577 [inline] [] handle_mm_fault+0x1f82/0x2530 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 [] clear_user+0x79/0xd0 arch/x86/lib/usercopy_64.c:52 [] read_default_ldt arch/x86/kernel/ldt.c:202 [inline] [] sys_modify_ldt+0x67/0x260 arch/x86/kernel/ldt.c:287 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 31 CPU: 1 PID: 9505 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 ffff8801c70d79a0 ffffffff81d90429 ffff8801c70d7c80 0000000000000000 ffff8801c87b0e90 ffff8801c70d7b70 ffff8801c87b0d80 ffff8801c70d7b98 ffffffff8165e3c7 ffff8801c70d79d0 ffffffff811b8ccd 0000000006ef6fc0 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:2783 [inline] [] handle_pte_fault mm/memory.c:3488 [inline] [] __handle_mm_fault mm/memory.c:3577 [inline] [] handle_mm_fault+0x1f82/0x2530 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 [] clear_user+0x79/0xd0 arch/x86/lib/usercopy_64.c:52 [] read_default_ldt arch/x86/kernel/ldt.c:202 [inline] [] sys_modify_ldt+0x67/0x260 arch/x86/kernel/ldt.c:287 [] entry_SYSCALL_64_fastpath+0x23/0xc6 binder: 9512:9535 ioctl 4c01 0 returned -22 binder: 9512:9535 ioctl 4b6a 204fd000 returned -22 binder: 9512:9535 ioctl 5411 20e27000 returned -22 binder: 9512:9535 ioctl 4c01 0 returned -22 device gre0 entered promiscuous mode keychord: unsupported version 48 keychord: unsupported version 48 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=53769 sclass=netlink_route_socket pig=9667 comm=syz-executor2 IPVS: Creating netns size=2536 id=20 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=53769 sclass=netlink_route_socket pig=9667 comm=syz-executor2 tmpfs: No value for mount option '‹¶K"WöËO¢©S£d€Yl®' 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: 10 callbacks suppressed netlink: 13 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor0'. binder: 9877:9881 ioctl 89e3 208ceffe returned -22 binder: 9877:9881 ioctl 4b6a 204fd000 returned -22 binder: 9877:9881 ioctl 5411 20e27000 returned -22 binder: 9877:9881 ioctl 4c01 0 returned -22 netlink: 1 bytes leftover after parsing attributes in process `syz-executor2'. IPv6: NLM_F_CREATE should be specified when creating new route SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=9898 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=9898 comm=syz-executor7 device lo entered promiscuous mode device lo left promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=9908 comm=syz-executor7 binder: 9877:9905 ioctl 89e3 208ceffe returned -22 binder: 9877:9905 ioctl 5411 20e27000 returned -22 binder: 9877:9881 ioctl 4b6a 204fd000 returned -22 binder: 9877:9881 ioctl 4c01 0 returned -22 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=9931 comm=syz-executor7 device lo entered promiscuous mode device lo left promiscuous mode sock: process `syz-executor0' is using obsolete setsockopt SO_BSDCOMPAT netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor1'. keychord: Insufficient bytes present for keycount 42 keychord: Insufficient bytes present for keycount 42 netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor1'. FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 9947 Comm: syz-executor2 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801aa73f4e0 ffffffff81d90429 ffff8801aa73f7c0 0000000000000000 ffff8801c87b0590 ffff8801aa73f6b0 ffff8801c87b0480 ffff8801aa73f6d8 ffffffff8165e3c7 ffff880102408040 ffff8801aa73f630 00000001ce61f067 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 [] generic_perform_write+0x1dc/0x500 mm/filemap.c:2731 [] __generic_file_write_iter+0x348/0x570 mm/filemap.c:2866 [] generic_file_write_iter+0x2d5/0x600 mm/filemap.c:2894 [] new_sync_write fs/read_write.c:499 [inline] [] __vfs_write+0x4bf/0x680 fs/read_write.c:512 [] vfs_write+0x189/0x530 fs/read_write.c:560 [] SYSC_write fs/read_write.c:607 [inline] [] SyS_write+0xd9/0x1b0 fs/read_write.c:599 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 9947 Comm: syz-executor2 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801aa73f4e0 ffffffff81d90429 ffff8801aa73f7c0 0000000000000000 ffff8801c87b0110 ffff8801aa73f6b0 ffff8801c87b0000 ffff8801aa73f6d8 ffffffff8165e3c7 ffff8801da163e40 ffff8801aa73f630 00000001ce61f067 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 [] generic_perform_write+0x1dc/0x500 mm/filemap.c:2731 [] __generic_file_write_iter+0x348/0x570 mm/filemap.c:2866 [] generic_file_write_iter+0x2d5/0x600 mm/filemap.c:2894 [] new_sync_write fs/read_write.c:499 [inline] [] __vfs_write+0x4bf/0x680 fs/read_write.c:512 [] vfs_write+0x189/0x530 fs/read_write.c:560 [] SYSC_write fs/read_write.c:607 [inline] [] SyS_write+0xd9/0x1b0 fs/read_write.c:599 [] entry_SYSCALL_64_fastpath+0x23/0xc6 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 gre0 left promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode netlink: 48 bytes leftover after parsing attributes in process `syz-executor6'. IPv6: Can't replace route, no match found IPv6: Can't replace route, no match found binder: 10239:10241 ioctl 5402 20f52000 returned -22 binder: 10239:10241 ioctl 4b36 0 returned -22 IPVS: Creating netns size=2536 id=21 binder: 10239:10287 ioctl 5402 20f52000 returned -22 binder: 10239:10287 ioctl 4b36 0 returned -22 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65535 sclass=netlink_route_socket pig=10307 comm=syz-executor6 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65535 sclass=netlink_route_socket pig=10307 comm=syz-executor6 tmpfs: No value for mount option '‹¶K"WöËO¢©S£d€Yl®' Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable tmpfs: No value for mount option '‹¶K"WöËO¢©S£d€Yl®' Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable binder: 10442:10445 ioctl 40505412 202ddfb0 returned -22 device gre0 entered promiscuous mode binder: 10457:10462 ioctl c08c5335 209dcf74 returned -22 binder: 10442:10445 ioctl 40505412 202ddfb0 returned -22 binder: 10457:10471 ioctl 2403 8 returned -22 binder: 10457:10471 ioctl c08c5335 209dcf74 returned -22 binder: 10457:10480 ioctl 2403 8 returned -22 binder: 10493:10494 ioctl 5402 20f52000 returned -22 binder: 10493:10494 ioctl 4b36 0 returned -22 binder: 10493:10499 ioctl 5402 20f52000 returned -22 binder: 10493:10499 ioctl 4b36 0 returned -22 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¨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¨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¨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¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H 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¨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¨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¨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¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10630 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10632 comm=syz-executor3 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 binder: 10648:10652 ioctl c058534b 20ff1000 returned -22 binder: 10648:10654 ioctl c058534b 20ff1000 returned -22 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 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 9pnet_virtio: no channels available for device H device lo entered promiscuous mode binder: 10767:10768 ioctl 4b45 20306000 returned -22 device lo left promiscuous mode binder: 10767:10768 ioctl 4b45 20306000 returned -22 device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode binder: 10927:10928 ioctl 8915 20004000 returned -22 binder: 10927:10928 ioctl 8915 20004000 returned -22 binder: 10941:10945 ioctl 4b44 20ad2000 returned -22 binder: 10941:10945 ioctl 4b44 20ad2000 returned -22 device lo entered promiscuous mode device lo left promiscuous mode device gre0 entered promiscuous mode IPVS: Creating netns size=2536 id=22 IPVS: Creating netns size=2536 id=23 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) pktgen: Initialization failed for all threads binder: 11397:11398 ioctl 4b48 20000000 returned -22 binder: 11397:11398 ioctl 4b48 20000000 returned -22 nla_parse: 13 callbacks suppressed netlink: 8 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor3'. keychord: keycode 25638 out of range