================================================================== BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ac635718 BUG: KASAN: use-after-free in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ac635718 BUG: KASAN: use-after-free in static_key_count include/linux/jump_label.h:174 [inline] at addr ffff8801ac635718 BUG: KASAN: use-after-free in static_key_false include/linux/jump_label.h:184 [inline] at addr ffff8801ac635718 BUG: KASAN: use-after-free in perf_sw_event include/linux/perf_event.h:1039 [inline] at addr ffff8801ac635718 BUG: KASAN: use-after-free in __do_page_fault+0xc80/0xd70 arch/x86/mm/fault.c:1438 at addr ffff8801ac635718 Read of size 8 by task syz-executor6/4373 CPU: 0 PID: 4373 Comm: syz-executor6 Not tainted 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801ac66fd88 ffffffff81d90429 ffff8801da155140 ffff8801ac6356c8 ffff8801ac635780 ffffed00358c6ae3 ffff8801ac635718 ffff8801ac66fdb0 ffffffff8153a3ac ffffed00358c6ae3 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 ffff8801ac6356c8, in cache vm_area_struct size: 184 Allocated: PID = 4373 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 = 4383 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: ffff8801ac635600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801ac635680: fb fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb >ffff8801ac635700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801ac635780: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb ffff8801ac635800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc ================================================================== Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable device lo entered promiscuous mode netlink: 3865 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. binder: 4575:4576 ioctl 541c 20dd8ff4 returned -22 binder: 4575:4576 ioctl 54a3 0 returned -22 netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. binder_alloc: binder_alloc_mmap_handler: 4575 20000000-20400000 already mapped failed -16 binder: 4575:4576 ioctl 541c 20dd8ff4 returned -22 sg_write: data in/out 476/6 bytes for SCSI command 0x0-- guessing data in; program syz-executor0 not setting count and/or reply_len properly binder: 4575:4606 ioctl 54a3 0 returned -22 tmpfs: No value for mount option '‹¶K"WöËO¢©S£d€Yl®' tmpfs: No value for mount option '‹¶K"WöËO¢©S£d€Yl®' keychord: unsupported version 48 tmpfs: Bad mount option Ðî keychord: unsupported version 48 tmpfs: Bad mount option Ðî IPVS: Creating netns size=2536 id=11 Tx-ring is not supported. Tx-ring is not supported. 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 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65535 sclass=netlink_route_socket pig=4831 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65535 sclass=netlink_route_socket pig=4844 comm=syz-executor7 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 netlink: 6 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 6 bytes leftover after parsing attributes in process `syz-executor0'. Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable capability: warning: `syz-executor2' uses deprecated v2 capabilities in a way that may be insecure IPVS: Creating netns size=2536 id=12 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: 5119:5120 ioctl 8903 20af0ffc returned -22 binder: 5119:5120 ioctl 8903 20af0ffc returned -22 netlink: 17 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 17 bytes leftover after parsing attributes in process `syz-executor5'. device gre0 entered promiscuous mode netlink: 1 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor5'. device gre0 entered promiscuous mode PF_BRIDGE: RTM_SETLINK with unknown ifindex PF_BRIDGE: RTM_SETLINK with unknown ifindex netlink: 1 bytes leftover after parsing attributes in process `syz-executor5'. device lo entered promiscuous mode device lo left promiscuous mode netlink: 1 bytes leftover after parsing attributes in process `syz-executor5'. device lo entered promiscuous mode device lo left promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode binder: 5674:5692 ioctl 4b36 0 returned -22 binder: 5674:5713 ioctl 4b36 0 returned -22 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=5781 comm=syz-executor7 device gre0 entered promiscuous mode sg_write: data in/out 262364/161 bytes for SCSI command 0xff-- guessing data in; program syz-executor3 not setting count and/or reply_len properly binder: 5826:5831 ioctl c0305302 20b49000 returned -22 sg_write: data in/out 822404280/67 bytes for SCSI command 0x12-- guessing data in; program syz-executor5 not setting count and/or reply_len properly binder: 5826:5831 ioctl c0305302 20b49000 returned -22 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 5948 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 ffff8801cc3d74e0 ffffffff81d90429 ffff8801cc3d77c0 0000000000000000 ffff8801c9a73190 ffff8801cc3d76b0 ffff8801c9a73080 ffff8801cc3d76d8 ffffffff8165e3c7 ffff880102408040 ffff8801cc3d7630 00000001c63a4067 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: 5952 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 ffff8801cc3df4e0 ffffffff81d90429[ 52.138476] ffff8801cc3df7c0 0000000000000000 ffff8801c9a73490 ffff8801cc3df6b0 ffff8801c9a73380 ffff8801cc3df6d8 ffffffff8165e3c7 ffffffff810d3db6 ffff8801cc3df630 00000001c6207067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 FAULT_FLAG_ALLOW_RETRY missing 30 [] 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 CPU: 1 PID: 6019 Comm: syz-executor3 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d99e7940 ffffffff81d90429 ffff8801d99e7c20 0000000000000000 ffff8801c9a73310 ffff8801d99e7b10 ffff8801c9a73200 ffff8801d99e7b38 ffffffff8165e3c7 1ffff1003b33cf2f ffff8801d99e7a90 00000001ca2d1067 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: 4 callbacks suppressed netlink: 64 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 64 bytes leftover after parsing attributes in process `syz-executor3'. keychord: invalid keycode count 0 keychord: invalid keycode count 0 device gre0 entered promiscuous mode device gre0 entered promiscuous mode netlink: 5 bytes leftover after parsing attributes in process `syz-executor5'. device gre0 entered promiscuous mode netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'. device gre0 left promiscuous mode netlink: 5 bytes leftover after parsing attributes in process `syz-executor5'. device gre0 entered promiscuous mode device gre0 left promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6315 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6336 comm=syz-executor7 netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor4'. sock: sock_set_timeout: `syz-executor2' (pid 6490) tries to set negative timeout device gre0 entered promiscuous mode netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'. device gre0 entered promiscuous mode device gre0 left promiscuous mode device gre0 entered promiscuous mode FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 6656 Comm: syz-executor5 Tainted: G B 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801c4ebf8b0 ffffffff81d90429 ffff8801c4ebfb90 0000000000000000 ffff8801c9a71a90 ffff8801c4ebfa80 ffff8801c9a71980 ffff8801c4ebfaa8 ffffffff8165e3c7 ffffffff83897fe3 ffff8801c4ebfa00 00000001ce941067 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