================================================================== BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801cacacaf8 BUG: KASAN: use-after-free in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801cacacaf8 BUG: KASAN: use-after-free in static_key_count include/linux/jump_label.h:174 [inline] at addr ffff8801cacacaf8 BUG: KASAN: use-after-free in static_key_false include/linux/jump_label.h:184 [inline] at addr ffff8801cacacaf8 BUG: KASAN: use-after-free in perf_sw_event include/linux/perf_event.h:1039 [inline] at addr ffff8801cacacaf8 BUG: KASAN: use-after-free in __do_page_fault+0xc80/0xd70 arch/x86/mm/fault.c:1438 at addr ffff8801cacacaf8 Read of size 8 by task syz-executor4/16327 CPU: 1 PID: 16327 Comm: syz-executor4 Not tainted 4.9.64-gfbb7468 #94 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d5d77d88 ffffffff81d90429 ffff8801da155140 ffff8801cacacaa8 ffff8801cacacb60 ffffed003959595f ffff8801cacacaf8 ffff8801d5d77db0 ffffffff8153a3ac ffffed003959595f 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 ffff8801cacacaa8, in cache vm_area_struct size: 184 Allocated: PID = 16327 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 = 16334 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: ffff8801cacac980: fc fc fc fc fc fc fb fb fb fb fb fb fb fb fb fb ffff8801cacaca00: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc >ffff8801cacaca80: fc fc fc fc fc fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801cacacb00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff8801cacacb80: fc fc fc fc fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== IPVS: Creating netns size=2536 id=30 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 program syz-executor1 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 netlink: 5 bytes leftover after parsing attributes in process `syz-executor0'. program syz-executor1 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 netlink: 5 bytes leftover after parsing attributes in process `syz-executor0'. ALSA: seq fatal error: cannot create timer (-22) ALSA: seq fatal error: cannot create timer (-22) netlink: 5 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor0'. 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 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 netlink: 7 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor6'. 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) netlink: 11 bytes leftover after parsing attributes in process `syz-executor0'. pktgen: Initialization failed for all threads netlink: 11 bytes leftover after parsing attributes in process `syz-executor0'. 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: 21 bytes leftover after parsing attributes in process `syz-executor4'. IPVS: Creating netns size=2536 id=31 sd 0:0:1:0: [sg0] tag#554 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK sd 0:0:1:0: [sg0] tag#554 CDB: opcode=0xff (vendor) sd 0:0:1:0: [sg0] tag#554 CDB[00]: ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 sd 0:0:1:0: [sg0] tag#554 CDB[10]: 00 00 00 00 10 27 00 00 00 00 00 00 00 00 00 00 sd 0:0:1:0: [sg0] tag#554 CDB[20]: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 sd 0:0:1:0: [sg0] tag#554 CDB[30]: 00 00 00 00 00 00 00 00 00 00 00 00 sd 0:0:1:0: [sg0] tag#866 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK sd 0:0:1:0: [sg0] tag#866 CDB: opcode=0xff (vendor) sd 0:0:1:0: [sg0] tag#866 CDB[00]: ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 sd 0:0:1:0: [sg0] tag#866 CDB[10]: 00 00 00 00 10 27 00 00 00 00 00 00 00 00 00 00 sd 0:0:1:0: [sg0] tag#866 CDB[20]: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 sd 0:0:1:0: [sg0] tag#866 CDB[30]: 00 00 00 00 00 00 00 00 00 00 00 00 binder: 16908:16910 ioctl 8903 20af0ffc returned -22 9pnet_virtio: no channels available for device ./file0 binder: 16908:16910 ioctl 8903 20af0ffc returned -22 9pnet_virtio: no channels available for device ./file0 selinux_nlmsg_perm: 142 callbacks suppressed SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=16952 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=16952 comm=syz-executor3 PF_BRIDGE: RTM_NEWNEIGH with invalid address PF_BRIDGE: RTM_NEWNEIGH with invalid address device gre0 entered promiscuous mode binder: 17221:17223 ioctl 4b44 20ad2000 returned -22 binder: 17221:17223 ioctl 4b44 20ad2000 returned -22 device gre0 entered promiscuous mode IPVS: Creating netns size=2536 id=32 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=33 device lo entered promiscuous mode device lo left promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=17655 comm=syz-executor2 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=17663 comm=syz-executor2 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) 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=0 sclass=netlink_route_socket pig=17689 comm=syz-executor2 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=17689 comm=syz-executor2 device gre0 entered promiscuous mode device lo entered promiscuous mode nla_parse: 12 callbacks suppressed netlink: 1 bytes leftover after parsing attributes in process `syz-executor3'. device lo left promiscuous mode netlink: 1 bytes leftover after parsing attributes in process `syz-executor3'. device lo entered promiscuous mode device lo left promiscuous mode IPVS: Creating netns size=2536 id=34 binder: 17942:17944 ioctl 4b44 20ad2000 returned -22 binder: 17942:17951 ioctl 4b44 20ad2000 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 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=18015 comm=syz-executor5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=17998 comm=syz-executor5 netlink: 1 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor7'. device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode 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: 5 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor1'. device gre0 entered promiscuous mode binder: 18292:18293 ioctl 8936 20c4cfff returned -22 keychord: unsupported version 48 netlink: 8 bytes leftover after parsing attributes in process `syz-executor3'. keychord: unsupported version 48 binder: 18292:18293 ioctl 8936 20c4cfff returned -22 netlink: 8 bytes leftover after parsing attributes in process `syz-executor3'. sock: sock_set_timeout: `syz-executor6' (pid 18340) tries to set negative timeout SELinux: unrecognized netlink message: protocol=0 nlmsg_type=13002 sclass=netlink_route_socket pig=18365 comm=syz-executor2 device lo entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=36287 sclass=netlink_route_socket pig=18360 comm=syz-executor6 IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE IPv6: NLM_F_CREATE should be set when creating new route SELinux: unrecognized netlink message: protocol=0 nlmsg_type=13002 sclass=netlink_route_socket pig=18390 comm=syz-executor2 tmpfs: No value for mount option '‹¶K"WöËO¢©S£d€Yl®' IPv6: NLM_F_CREATE should be set when creating new route device gre0 entered promiscuous mode device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=36287 sclass=netlink_route_socket pig=18378 comm=syz-executor6 device gre0 entered promiscuous mode