[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.42' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 56.582661][ T6854] ------------[ cut here ]------------ [ 56.588479][ T6854] WARNING: CPU: 0 PID: 6854 at lib/nlattr.c:117 nla_get_range_unsigned+0x157/0x530 [ 56.598851][ T6854] Kernel panic - not syncing: panic_on_warn set ... [ 56.605429][ T6854] CPU: 0 PID: 6854 Comm: syz-executor416 Not tainted 5.9.0-rc1-syzkaller #0 [ 56.614068][ T6854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.624092][ T6854] Call Trace: [ 56.627352][ T6854] dump_stack+0x18f/0x20d [ 56.631654][ T6854] panic+0x2e3/0x75c [ 56.635524][ T6854] ? __warn_printk+0xf3/0xf3 [ 56.640088][ T6854] ? printk+0xba/0xed [ 56.644044][ T6854] ? log_store.cold+0x16/0x16 [ 56.648689][ T6854] ? genl_rcv+0x24/0x40 [ 56.652816][ T6854] ? __warn.cold+0x5/0x4a [ 56.657115][ T6854] ? __warn+0xd6/0x1f2 [ 56.661156][ T6854] ? nla_get_range_unsigned+0x157/0x530 [ 56.666670][ T6854] __warn.cold+0x20/0x4a [ 56.670893][ T6854] ? nla_get_range_unsigned+0x157/0x530 [ 56.676414][ T6854] report_bug+0x1bd/0x210 [ 56.680716][ T6854] handle_bug+0x38/0x90 [ 56.684846][ T6854] ? mark_lock+0xbc/0x1710 [ 56.689232][ T6854] exc_invalid_op+0x14/0x40 [ 56.693718][ T6854] asm_exc_invalid_op+0x12/0x20 [ 56.698540][ T6854] RIP: 0010:nla_get_range_unsigned+0x157/0x530 [ 56.704662][ T6854] Code: 2a 03 00 00 44 0f b6 3b 48 c7 c6 40 9f 96 88 4c 89 ff e8 3c 34 c4 fd 41 80 ff 0b 77 11 42 ff 24 fd 60 99 96 88 e8 69 37 c4 fd <0f> 0b eb 8f e8 60 37 c4 fd 0f 0b 5b 41 5c 41 5d 41 5e 41 5f 5d e9 [ 56.724234][ T6854] RSP: 0018:ffffc90000f17190 EFLAGS: 00010293 [ 56.730270][ T6854] RAX: 0000000000000000 RBX: ffffffff89180640 RCX: ffffffff83b006e8 [ 56.738212][ T6854] RDX: ffff8880a79a8300 RSI: ffffffff83b007a7 RDI: 0000000000000003 [ 56.746263][ T6854] RBP: ffffc90000f171b8 R08: 0000000000000000 R09: ffff8880972a4370 [ 56.754207][ T6854] R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90000f17278 [ 56.762148][ T6854] R13: ffffffff89180641 R14: 0000000000008c60 R15: ffffffff89180640 [ 56.770100][ T6854] ? nla_get_range_unsigned+0x98/0x530 [ 56.775532][ T6854] ? nla_get_range_unsigned+0x157/0x530 [ 56.781073][ T6854] netlink_policy_dump_write+0x2ae/0xea0 [ 56.786722][ T6854] ? netlink_policy_dump_loop+0x170/0x170 [ 56.792411][ T6854] ? skb_put+0x134/0x180 [ 56.796626][ T6854] ? memset+0x20/0x40 [ 56.800582][ T6854] ? __nla_reserve+0x9a/0xc0 [ 56.805151][ T6854] ? __nla_put+0x23/0x40 [ 56.809364][ T6854] ? memcpy+0x39/0x60 [ 56.813322][ T6854] ctrl_dumppolicy+0x4a8/0x900 [ 56.818064][ T6854] ? genl_start+0x5d0/0x5d0 [ 56.822537][ T6854] ? __kmalloc_node_track_caller+0x38/0x60 [ 56.828313][ T6854] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 56.833829][ T6854] ? __phys_addr+0x9a/0x110 [ 56.838300][ T6854] ? memset+0x20/0x40 [ 56.842255][ T6854] genl_lock_dumpit+0x7f/0xb0 [ 56.846907][ T6854] netlink_dump+0x4cd/0xf60 [ 56.851391][ T6854] ? netlink_insert+0x1670/0x1670 [ 56.856388][ T6854] ? __mutex_unlock_slowpath+0xe2/0x610 [ 56.861933][ T6854] ? kmem_cache_alloc_trace+0x188/0x2c0 [ 56.867448][ T6854] ? genl_start+0x3bb/0x5d0 [ 56.871941][ T6854] __netlink_dump_start+0x643/0x900 [ 56.877145][ T6854] ? genl_rcv_msg+0x980/0x980 [ 56.881941][ T6854] ? genl_start+0x5d0/0x5d0 [ 56.886502][ T6854] genl_family_rcv_msg_dumpit+0x2ac/0x310 [ 56.892193][ T6854] ? genl_rcv+0x40/0x40 [ 56.896321][ T6854] ? mutex_lock_io_nested+0xf60/0xf60 [ 56.901766][ T6854] ? mark_lock+0xbc/0x1710 [ 56.906154][ T6854] ? genl_rcv_msg+0x980/0x980 [ 56.910805][ T6854] ? genl_unlock+0x20/0x20 [ 56.915213][ T6854] ? genl_parallel_done+0xf0/0xf0 [ 56.920316][ T6854] ? __radix_tree_lookup+0x1f3/0x290 [ 56.925591][ T6854] genl_rcv_msg+0x75f/0x980 [ 56.930071][ T6854] ? genl_family_rcv_msg_attrs_parse.isra.0+0x250/0x250 [ 56.936992][ T6854] ? lock_acquire+0x1f1/0xad0 [ 56.941651][ T6854] ? genl_rcv+0x15/0x40 [ 56.945782][ T6854] ? lock_release+0x8e0/0x8e0 [ 56.950430][ T6854] netlink_rcv_skb+0x15a/0x430 [ 56.955170][ T6854] ? genl_family_rcv_msg_attrs_parse.isra.0+0x250/0x250 [ 56.962164][ T6854] ? netlink_ack+0xa10/0xa10 [ 56.966731][ T6854] ? lock_is_held_type+0xbb/0xf0 [ 56.971640][ T6854] genl_rcv+0x24/0x40 [ 56.975593][ T6854] netlink_unicast+0x533/0x7d0 [ 56.980330][ T6854] ? netlink_attachskb+0x810/0x810 [ 56.985414][ T6854] ? _copy_from_iter_full+0x247/0x890 [ 56.990758][ T6854] ? __phys_addr+0x9a/0x110 [ 56.995233][ T6854] ? __phys_addr_symbol+0x2c/0x70 [ 57.000241][ T6854] ? __check_object_size+0x171/0x3e4 [ 57.005638][ T6854] netlink_sendmsg+0x856/0xd90 [ 57.010410][ T6854] ? netlink_unicast+0x7d0/0x7d0 [ 57.015356][ T6854] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 57.020613][ T6854] ? netlink_unicast+0x7d0/0x7d0 [ 57.025538][ T6854] sock_sendmsg+0xcf/0x120 [ 57.029926][ T6854] ____sys_sendmsg+0x6e8/0x810 [ 57.034952][ T6854] ? kernel_sendmsg+0x50/0x50 [ 57.039602][ T6854] ? do_recvmmsg+0x6d0/0x6d0 [ 57.044168][ T6854] ? lock_acquire+0x1f1/0xad0 [ 57.048817][ T6854] ? do_huge_pmd_anonymous_page+0x120d/0x2230 [ 57.054857][ T6854] ? find_held_lock+0x2d/0x110 [ 57.059633][ T6854] ___sys_sendmsg+0xf3/0x170 [ 57.064204][ T6854] ? sendmsg_copy_msghdr+0x160/0x160 [ 57.069509][ T6854] ? do_huge_pmd_anonymous_page+0x1b94/0x2230 [ 57.075670][ T6854] ? do_huge_pmd_anonymous_page+0x8ef/0x2230 [ 57.081628][ T6854] ? handle_mm_fault+0xb78/0x4590 [ 57.086625][ T6854] ? find_held_lock+0x2d/0x110 [ 57.091361][ T6854] ? __fget_light+0x215/0x280 [ 57.096010][ T6854] __sys_sendmsg+0xe5/0x1b0 [ 57.100525][ T6854] ? __sys_sendmsg_sock+0xb0/0xb0 [ 57.105534][ T6854] ? trace_hardirqs_on+0x5f/0x220 [ 57.110532][ T6854] ? lockdep_hardirqs_on+0x76/0xf0 [ 57.115617][ T6854] do_syscall_64+0x2d/0x70 [ 57.120007][ T6854] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 57.125874][ T6854] RIP: 0033:0x4402a9 [ 57.129740][ T6854] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 0f 83 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 57.149450][ T6854] RSP: 002b:00007ffd2f689438 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 57.157837][ T6854] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402a9 [ 57.165828][ T6854] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 [ 57.173835][ T6854] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 57.181800][ T6854] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401ab0 [ 57.189758][ T6854] R13: 0000000000401b40 R14: 0000000000000000 R15: 0000000000000000 [ 57.199091][ T6854] Kernel Offset: disabled [ 57.203461][ T6854] Rebooting in 86400 seconds..