netlink: 3865 bytes leftover after parsing attributes in process `syz-executor7'. ================================================================== BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801a52d9148 BUG: KASAN: use-after-free in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801a52d9148 BUG: KASAN: use-after-free in static_key_count include/linux/jump_label.h:174 [inline] at addr ffff8801a52d9148 BUG: KASAN: use-after-free in static_key_false include/linux/jump_label.h:184 [inline] at addr ffff8801a52d9148 BUG: KASAN: use-after-free in perf_sw_event include/linux/perf_event.h:1039 [inline] at addr ffff8801a52d9148 BUG: KASAN: use-after-free in __do_page_fault+0xc80/0xd70 arch/x86/mm/fault.c:1438 at addr ffff8801a52d9148 Read of size 8 by task syz-executor4/4126 CPU: 1 PID: 4126 Comm: syz-executor4 Not tainted 4.9.60-g4ca16e6 #83 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a537fd88 ffffffff81d91389 ffff8801da155140 ffff8801a52d90f8 ffff8801a52d91b0 ffffed0034a5b229 ffff8801a52d9148 ffff8801a537fdb0 ffffffff8153c1bc ffffed0034a5b229 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 ffff8801a52d90f8, in cache vm_area_struct size: 184 Allocated: PID = 4126 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 = 4135 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: ffff8801a52d9000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801a52d9080: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fb >ffff8801a52d9100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801a52d9180: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fb fb ffff8801a52d9200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== SELinux: unrecognized netlink message: protocol=4 nlmsg_type=22 sclass=netlink_tcpdiag_socket pig=4205 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=22 sclass=netlink_tcpdiag_socket pig=4205 comm=syz-executor3 IPVS: Creating netns size=2536 id=9 capability: warning: `syz-executor6' uses 32-bit capabilities (legacy support in use) device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=11421 sclass=netlink_route_socket pig=4346 comm=syz-executor4 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=11421 sclass=netlink_route_socket pig=4346 comm=syz-executor4 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 device gre0 entered 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 IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE binder: 4630:4634 ioctl c08c5335 209dcf74 returned -22 binder: 4630:4644 ioctl c08c5335 209dcf74 returned -22 device gre0 entered promiscuous mode device gre0 left promiscuous mode device gre0 entered promiscuous mode device gre0 left promiscuous mode binder: 4694:4695 ioctl 80605414 2011e000 returned -22 binder: 4693:4696 ioctl 5609 208daffa returned -22 binder: 4694:4707 ioctl 80605414 2011e000 returned -22 binder: 4693:4708 ioctl 408c5333 205c5000 returned -22 IPv6: NLM_F_CREATE should be specified when creating new route binder: 4719:4726 ioctl c08c5335 209dcf74 returned -22 binder: 4693:4729 ioctl 5609 208daffa returned -22 binder: 4693:4708 ioctl 408c5333 205c5000 returned -22 binder: 4719:4742 ioctl c08c5335 209dcf74 returned -22 capability: warning: `syz-executor5' uses deprecated v2 capabilities in a way that may be insecure sg_write: data in/out 65500/34 bytes for SCSI command 0xfe-- guessing data in; program syz-executor6 not setting count and/or reply_len properly nla_parse: 15 callbacks suppressed netlink: 5 bytes leftover after parsing attributes in process `syz-executor7'. device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=11421 sclass=netlink_route_socket pig=4931 comm=syz-executor1 netlink: 5 bytes leftover after parsing attributes in process `syz-executor7'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=23401 sclass=netlink_route_socket pig=4954 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=11421 sclass=netlink_route_socket pig=4955 comm=syz-executor1 PF_BRIDGE: RTM_SETLINK with unknown ifindex IPVS: Creating netns size=2536 id=10 binder: 5003:5005 ioctl c0206416 20d30fe0 returned -22 PF_BRIDGE: RTM_SETLINK with unknown ifindex binder: 5003:5005 ioctl c0206416 20d30fe0 returned -22 netlink: 5 bytes leftover after parsing attributes in process `syz-executor4'. IPv6: NLM_F_REPLACE set, but no existing node found! netlink: 5 bytes leftover after parsing attributes in process `syz-executor4'. IPv6: NLM_F_REPLACE set, but no existing node found! 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 entered promiscuous mode netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. ALSA: seq fatal error: cannot create timer (-19) binder: 5141:5142 ioctl 40082404 20000ff8 returned -22 ALSA: seq fatal error: cannot create timer (-19) binder: 5141:5142 ioctl 8914 20c01000 returned -22 binder: 5141:5148 ioctl 40082404 20000ff8 returned -22 binder: 5141:5142 ioctl 8914 20c01000 returned -22 netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. binder: 5218:5220 ioctl 40082404 20000ff8 returned -22 binder: 5218:5220 ioctl 4b48 20000000 returned -22 binder: 5218:5220 ioctl 40082404 20000ff8 returned -22 binder: 5218:5263 ioctl 4b48 20000000 returned -22 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 binder: 5345:5352 ioctl 4b45 20306000 returned -22 binder: 5345:5352 ioctl 540f 207e9000 returned -22 binder: 5345:5378 ioctl 4b45 20306000 returned -22 netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. binder: 5345:5352 ioctl 540f 207e9000 returned -22 netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. FAULT_FLAG_ALLOW_RETRY missing 30 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 5417 Comm: syz-executor7 Tainted: G B 4.9.60-g4ca16e6 #83 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801c674f830 ffffffff81d91389 ffff8801c674fb10 0000000000000000 ffff8801aae66410 ffff8801c674fa00 ffff8801aae66300 ffff8801c674fa28 ffffffff8165fc37 ffff8801db321400 ffff8801c674f980 00000001a7353067 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 [] SYSC_mq_timedreceive ipc/mqueue.c:1092 [inline] [] SyS_mq_timedreceive+0xcd/0xdb0 ipc/mqueue.c:1077 [] entry_SYSCALL_64_fastpath+0x23/0xc6 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=23401 sclass=netlink_route_socket pig=5451 comm=syz-executor5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=23401 sclass=netlink_route_socket pig=5458 comm=syz-executor5 binder: 5486:5487 ioctl 80605414 2011e000 returned -22 binder: 5486:5492 ioctl 80605414 2011e000 returned -22 IPVS: Creating netns size=2536 id=11 CPU: 1 PID: 5428 Comm: syz-executor7 Tainted: G B 4.9.60-g4ca16e6 #83 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d94bf850 ffffffff81d91389 ffff8801d94bfb30 0000000000000000 ffff8801aae66410 ffff8801d94bfa20 ffff8801aae66300 ffff8801d94bfa48 ffffffff8165fc37 ffff8801db321400 ffff8801d94bf9a0 00000001a7353067 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 [] do_fcntl fs/fcntl.c:284 [inline] [] SYSC_fcntl fs/fcntl.c:372 [inline] [] SyS_fcntl+0x81c/0xc70 fs/fcntl.c:357 [] entry_SYSCALL_64_fastpath+0x23/0xc6 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 lo entered promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode device gre0 entered promiscuous mode device gre0 entered promiscuous mode binder: 5863:5864 ioctl 5609 208daffa returned -22 IPVS: Creating netns size=2536 id=12 binder: 5863:5912 ioctl 5609 208daffa returned -22 FAULT_FLAG_ALLOW_RETRY missing 30 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 5958 Comm: syz-executor0 Tainted: G B 4.9.60-g4ca16e6 #83 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a4217830 ffffffff81d91389 ffff8801a4217b10 0000000000000000 ffff8801cd8ee290 ffff8801a4217a00 ffff8801cd8ee180 ffff8801a4217a28 ffffffff8165fc37 ffff8801a4217850 ffff8801a4217980 00000001d4cdc067 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 [] move_addr_to_kernel net/socket.c:1390 [inline] [] SYSC_bind+0x237/0x280 net/socket.c:1390 [] SyS_bind+0x24/0x30 net/socket.c:1382 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 5926 Comm: syz-executor0 Tainted: G B 4.9.60-g4ca16e6 #83 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cbf375a0 ffffffff81d91389 ffff8801cbf37880 0000000000000000 ffff8801cd8ee290 ffff8801cbf37770 ffff8801cd8ee180 ffff8801cbf37798 ffffffff8165fc37 0000000000000000 ffff8801cbf376f0 00000001d4cdc067 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 [] inet_ioctl+0xf2/0x1c0 net/ipv4/af_inet.c:873 [] sock_do_ioctl+0x65/0xb0 net/socket.c:892 [] sock_ioctl+0x2e0/0x3d0 net/socket.c:978 [] vfs_ioctl fs/ioctl.c:43 [inline] [] do_vfs_ioctl+0x1aa/0x10c0 fs/ioctl.c:679 [] SYSC_ioctl fs/ioctl.c:694 [inline] [] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 5915 Comm: syz-executor0 Tainted: G B 4.9.60-g4ca16e6 #83 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801c72d76a0 ffffffff81d91389 ffff8801c72d7980 0000000000000000 ffff8801cd8ee290 ffff8801c72d7870 ffff8801cd8ee180 ffff8801c72d7898 ffffffff8165fc37 ffff8801c72d7750 ffff8801c72d77f0 00000001d4cdc067 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 [] inet_ioctl+0x117/0x1c0 net/ipv4/af_inet.c:891 [] sock_do_ioctl+0x65/0xb0 net/socket.c:892 [] sock_ioctl+0x2e0/0x3d0 net/socket.c:978 [] vfs_ioctl fs/ioctl.c:43 [inline] [] do_vfs_ioctl+0x1aa/0x10c0 fs/ioctl.c:679 [] SYSC_ioctl fs/ioctl.c:694 [inline] [] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685 [] entry_SYSCALL_64_fastpath+0x23/0xc6 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 CPU: 0 PID: 5943 Comm: syz-executor0 Tainted: G B 4.9.60-g4ca16e6 #83 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a43ef670 ffffffff81d91389 ffff8801a43ef950 0000000000000000 ffff8801cd8ee290 ffff8801a43ef840 ffff8801cd8ee180 ffff8801a43ef868 ffffffff8165fc37 ffff8801a43ef720 ffff8801a43ef7c0 00000001d4cdc067 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 [] do_pselect fs/select.c:688 [inline] [] SYSC_pselect6 fs/select.c:729 [inline] [] SyS_pselect6+0x483/0x500 fs/select.c:714 [] entry_SYSCALL_64_fastpath+0x23/0xc6 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=9 nlmsg_type=0 sclass=netlink_audit_socket pig=6068 comm=syz-executor4 SELinux: unrecognized netlink message: protocol=9 nlmsg_type=0 sclass=netlink_audit_socket pig=6112 comm=syz-executor4 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=31867 sclass=netlink_route_socket pig=6115 comm=syz-executor5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=31867 sclass=netlink_route_socket pig=6123 comm=syz-executor5 device gre0 entered promiscuous mode nla_parse: 9 callbacks suppressed netlink: 5 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 72 bytes leftover after parsing attributes in process `syz-executor4'. device gre0 entered promiscuous mode device gre0 left promiscuous mode netlink: 6 bytes leftover after parsing attributes in process `syz-executor7'. device gre0 entered promiscuous mode netlink: 72 bytes leftover after parsing attributes in process `syz-executor4'. sock: process `syz-executor2' is using obsolete setsockopt SO_BSDCOMPAT device gre0 left promiscuous mode netlink: 6 bytes leftover after parsing attributes in process `syz-executor7'. device lo left promiscuous mode