Warning: Permanently added '10.128.1.59' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 33.994190] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. [ 34.018786] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. [ 34.034630] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. [ 34.052697] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. [ 34.075421] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. [ 34.099345] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. [ 34.222601] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. [ 34.267771] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. [ 34.334364] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. [ 34.407963] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 39.014095] nla_parse: 146 callbacks suppressed [ 39.014103] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. [ 39.118257] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. [ 39.191207] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. [ 39.254143] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. [ 39.301372] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. executing program executing program executing program [ 39.353342] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. executing program executing program executing program [ 39.428145] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. [ 39.554891] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. [ 39.614170] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. [ 39.672423] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 44.063521] nla_parse: 142 callbacks suppressed [ 44.063529] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. executing program [ 44.160186] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. executing program [ 44.231255] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. [ 44.274418] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. [ 44.324713] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. [ 44.397780] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. [ 44.449506] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. [ 44.498599] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. [ 44.544626] netlink: 24 bytes leftover after parsing attributes in process `syz-executor267'. executing program [ 44.617624] netlink: 4 bytes leftover after parsing attributes in process `syz-executor267'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 45.132830] ================================================================== [ 45.140356] BUG: KASAN: use-after-free in macvlan_dev_get_iflink+0x5f/0x70 [ 45.147377] Read of size 4 at addr ffff888096cda2c8 by task syz-executor267/12487 [ 45.155002] [ 45.156639] CPU: 0 PID: 12487 Comm: syz-executor267 Not tainted 4.19.211-syzkaller #0 [ 45.164692] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.174046] Call Trace: [ 45.176656] dump_stack+0x1fc/0x2ef [ 45.180302] print_address_description.cold+0x54/0x219 [ 45.185591] kasan_report_error.cold+0x8a/0x1b9 [ 45.190268] ? macvlan_dev_get_iflink+0x5f/0x70 [ 45.194946] __asan_report_load4_noabort+0x88/0x90 [ 45.199884] ? macvlan_dev_get_iflink+0x5f/0x70 [ 45.204561] macvlan_dev_get_iflink+0x5f/0x70 [ 45.209063] ? macvlan_dev_poll_controller+0x10/0x10 [ 45.214169] dev_get_iflink+0x73/0xe0 [ 45.217977] rfc2863_policy+0x1af/0x200 [ 45.221970] linkwatch_do_dev+0x1d/0x110 [ 45.226045] linkwatch_forget_dev+0x16a/0x200 [ 45.230547] netdev_run_todo+0x258/0xab0 [ 45.234624] ? default_device_exit_batch+0x3c0/0x3c0 [ 45.239740] ? rtnl_getlink+0x620/0x620 [ 45.243726] rtnetlink_rcv_msg+0x460/0xb80 [ 45.247968] ? rtnl_calcit.isra.0+0x430/0x430 [ 45.252474] ? __netlink_lookup+0x3fc/0x730 [ 45.256810] ? lock_downgrade+0x720/0x720 [ 45.260966] ? check_preemption_disabled+0x41/0x280 [ 45.266005] netlink_rcv_skb+0x160/0x440 [ 45.270078] ? rtnl_calcit.isra.0+0x430/0x430 [ 45.274585] ? netlink_ack+0xae0/0xae0 [ 45.278477] netlink_unicast+0x4d5/0x690 [ 45.282534] ? netlink_sendskb+0x110/0x110 [ 45.286775] ? _copy_from_iter_full+0x229/0x7c0 [ 45.291452] ? __phys_addr_symbol+0x2c/0x70 [ 45.295784] ? __check_object_size+0x17b/0x3e0 [ 45.300376] netlink_sendmsg+0x6c3/0xc50 [ 45.304448] ? aa_af_perm+0x230/0x230 [ 45.308253] ? nlmsg_notify+0x1f0/0x1f0 [ 45.312231] ? kernel_recvmsg+0x220/0x220 [ 45.316391] ? nlmsg_notify+0x1f0/0x1f0 [ 45.320375] sock_sendmsg+0xc3/0x120 [ 45.324093] ___sys_sendmsg+0x7bb/0x8e0 [ 45.328074] ? mark_held_locks+0xf0/0xf0 [ 45.332149] ? copy_msghdr_from_user+0x440/0x440 [ 45.336914] ? __fget+0x32f/0x510 [ 45.340379] ? lock_downgrade+0x720/0x720 [ 45.344534] ? check_preemption_disabled+0x41/0x280 [ 45.349562] ? check_preemption_disabled+0x41/0x280 [ 45.354588] ? __fget+0x356/0x510 [ 45.358053] ? do_dup2+0x450/0x450 [ 45.361604] ? _copy_to_user+0xb8/0x100 [ 45.365591] ? __fdget+0x1d0/0x230 [ 45.369144] __x64_sys_sendmsg+0x132/0x220 [ 45.373387] ? __sys_sendmsg+0x1b0/0x1b0 [ 45.377455] ? __se_sys_futex+0x298/0x3b0 [ 45.381616] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 45.386992] ? trace_hardirqs_off_caller+0x6e/0x210 [ 45.392019] ? do_syscall_64+0x21/0x620 [ 45.396012] do_syscall_64+0xf9/0x620 [ 45.399831] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 45.405024] RIP: 0033:0x7f8629045dc9 [ 45.408739] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 45.427644] RSP: 002b:00007f8628fd6308 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 45.435362] RAX: ffffffffffffffda RBX: 00007f86290cd438 RCX: 00007f8629045dc9 [ 45.442633] RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000006 [ 45.450608] RBP: 00007f86290cd430 R08: 0000000000000000 R09: 0000000000000000 [ 45.457881] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f86290cd43c [ 45.465175] R13: 00007f862909b074 R14: 00f0ffffffffffff R15: 0000000000022000 [ 45.472452] [ 45.474079] Allocated by task 12445: [ 45.477805] __kmalloc_node+0x4c/0x70 [ 45.481616] kvmalloc_node+0x61/0xf0 [ 45.485597] alloc_netdev_mqs+0x97/0xd50 [ 45.489672] rtnl_create_link+0x1d4/0xa40 [ 45.493824] rtnl_newlink+0xf45/0x15c0 [ 45.497732] rtnetlink_rcv_msg+0x453/0xb80 [ 45.501967] netlink_rcv_skb+0x160/0x440 [ 45.506026] netlink_unicast+0x4d5/0x690 [ 45.510085] netlink_sendmsg+0x6c3/0xc50 [ 45.514143] sock_sendmsg+0xc3/0x120 [ 45.517855] ___sys_sendmsg+0x7bb/0x8e0 [ 45.521830] __x64_sys_sendmsg+0x132/0x220 [ 45.526070] do_syscall_64+0xf9/0x620 [ 45.529879] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 45.535153] [ 45.536777] Freed by task 12445: [ 45.540238] kfree+0xcc/0x210 [ 45.543346] kvfree+0x59/0x60 [ 45.546507] device_release+0x76/0x210 [ 45.550393] kobject_put+0x28b/0x5d0 [ 45.554129] netdev_run_todo+0x77f/0xab0 [ 45.558184] rtnetlink_rcv_msg+0x460/0xb80 [ 45.562413] netlink_rcv_skb+0x160/0x440 [ 45.566473] netlink_unicast+0x4d5/0x690 [ 45.570552] netlink_sendmsg+0x6c3/0xc50 [ 45.574613] sock_sendmsg+0xc3/0x120 [ 45.578330] ___sys_sendmsg+0x7bb/0x8e0 [ 45.582322] __x64_sys_sendmsg+0x132/0x220 [ 45.586559] do_syscall_64+0xf9/0x620 [ 45.590361] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 45.595535] [ 45.597162] The buggy address belongs to the object at ffff888096cda1c0 [ 45.597162] which belongs to the cache kmalloc-4096 of size 4096 [ 45.609997] The buggy address is located 264 bytes inside of [ 45.609997] 4096-byte region [ffff888096cda1c0, ffff888096cdb1c0) [ 45.622062] The buggy address belongs to the page: [ 45.627081] page:ffffea00025b3680 count:1 mapcount:0 mapping:ffff88813bff0dc0 index:0x0 compound_mapcount: 0 [ 45.637050] flags: 0xfff00000008100(slab|head) [ 45.641638] raw: 00fff00000008100 ffffea000275bc88 ffffea0002711508 ffff88813bff0dc0 [ 45.649523] raw: 0000000000000000 ffff888096cda1c0 0000000100000001 0000000000000000 [ 45.657398] page dumped because: kasan: bad access detected [ 45.663102] [ 45.664764] Memory state around the buggy address: [ 45.669687] ffff888096cda180: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 45.677048] ffff888096cda200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 45.684504] >ffff888096cda280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 45.691862] ^ [ 45.697567] ffff888096cda300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 45.705359] ffff888096cda380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 45.712716] ================================================================== [ 45.720068] Disabling lock debugging due to kernel taint executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 48.597009] Kernel panic - not syncing: panic_on_warn set ... [ 48.597009] [ 48.604403] CPU: 1 PID: 12487 Comm: syz-executor267 Tainted: G B 4.19.211-syzkaller #0 [ 48.613753] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.623206] Call Trace: [ 48.625809] dump_stack+0x1fc/0x2ef [ 48.629439] panic+0x26a/0x50e [ 48.632631] ? __warn_printk+0xf3/0xf3 [ 48.636523] ? preempt_schedule_common+0x45/0xc0 [ 48.641279] ? ___preempt_schedule+0x16/0x18 [ 48.645689] ? trace_hardirqs_on+0x55/0x210 [ 48.650018] kasan_end_report+0x43/0x49 [ 48.653998] kasan_report_error.cold+0xa7/0x1b9 [ 48.658674] ? macvlan_dev_get_iflink+0x5f/0x70 [ 48.663351] __asan_report_load4_noabort+0x88/0x90 [ 48.668313] ? macvlan_dev_get_iflink+0x5f/0x70 [ 48.672996] macvlan_dev_get_iflink+0x5f/0x70 [ 48.677496] ? macvlan_dev_poll_controller+0x10/0x10 [ 48.682597] dev_get_iflink+0x73/0xe0 [ 48.686400] rfc2863_policy+0x1af/0x200 [ 48.690379] linkwatch_do_dev+0x1d/0x110 [ 48.694446] linkwatch_forget_dev+0x16a/0x200 [ 48.698940] netdev_run_todo+0x258/0xab0 [ 48.703008] ? default_device_exit_batch+0x3c0/0x3c0 [ 48.708114] ? rtnl_getlink+0x620/0x620 [ 48.712089] rtnetlink_rcv_msg+0x460/0xb80 [ 48.716323] ? rtnl_calcit.isra.0+0x430/0x430 [ 48.720822] ? __netlink_lookup+0x3fc/0x730 [ 48.725179] ? lock_downgrade+0x720/0x720 [ 48.729327] ? check_preemption_disabled+0x41/0x280 [ 48.734348] netlink_rcv_skb+0x160/0x440 [ 48.738418] ? rtnl_calcit.isra.0+0x430/0x430 [ 48.742915] ? netlink_ack+0xae0/0xae0 [ 48.746822] netlink_unicast+0x4d5/0x690 [ 48.750893] ? netlink_sendskb+0x110/0x110 [ 48.755126] ? _copy_from_iter_full+0x229/0x7c0 [ 48.759797] ? __phys_addr_symbol+0x2c/0x70 [ 48.764123] ? __check_object_size+0x17b/0x3e0 [ 48.768715] netlink_sendmsg+0x6c3/0xc50 [ 48.772881] ? aa_af_perm+0x230/0x230 [ 48.776691] ? nlmsg_notify+0x1f0/0x1f0 [ 48.780668] ? kernel_recvmsg+0x220/0x220 [ 48.784815] ? nlmsg_notify+0x1f0/0x1f0 [ 48.788787] sock_sendmsg+0xc3/0x120 [ 48.792492] ___sys_sendmsg+0x7bb/0x8e0 [ 48.796458] ? mark_held_locks+0xf0/0xf0 [ 48.800516] ? copy_msghdr_from_user+0x440/0x440 [ 48.805268] ? __fget+0x32f/0x510 [ 48.808720] ? lock_downgrade+0x720/0x720 [ 48.812866] ? check_preemption_disabled+0x41/0x280 [ 48.817881] ? check_preemption_disabled+0x41/0x280 [ 48.822894] ? __fget+0x356/0x510 [ 48.826347] ? do_dup2+0x450/0x450 [ 48.829881] ? _copy_to_user+0xb8/0x100 [ 48.833847] ? __fdget+0x1d0/0x230 [ 48.837384] __x64_sys_sendmsg+0x132/0x220 [ 48.841611] ? __sys_sendmsg+0x1b0/0x1b0 [ 48.845666] ? __se_sys_futex+0x298/0x3b0 [ 48.849805] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 48.855159] ? trace_hardirqs_off_caller+0x6e/0x210 [ 48.860169] ? do_syscall_64+0x21/0x620 [ 48.864140] do_syscall_64+0xf9/0x620 [ 48.867935] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.873119] RIP: 0033:0x7f8629045dc9 [ 48.876818] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 48.895797] RSP: 002b:00007f8628fd6308 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 48.903497] RAX: ffffffffffffffda RBX: 00007f86290cd438 RCX: 00007f8629045dc9 [ 48.910761] RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000006 [ 48.918024] RBP: 00007f86290cd430 R08: 0000000000000000 R09: 0000000000000000 [ 48.925286] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f86290cd43c [ 48.932551] R13: 00007f862909b074 R14: 00f0ffffffffffff R15: 0000000000022000 [ 48.939980] Kernel Offset: disabled [ 48.943600] Rebooting in 86400 seconds..