[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.60' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 70.564925][ T8459] ------------[ cut here ]------------ [ 70.570624][ T8459] kernel BUG at net/core/dev.c:10661! [ 70.578869][ T8459] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 70.585053][ T8459] CPU: 1 PID: 8459 Comm: syz-executor375 Not tainted 5.11.0-rc2-syzkaller #0 [ 70.593802][ T8459] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.603888][ T8459] RIP: 0010:free_netdev+0x4b3/0x5e0 [ 70.609095][ T8459] Code: c0 01 38 d0 7c 08 84 d2 0f 85 1a 01 00 00 0f b7 83 32 02 00 00 48 29 c3 48 89 df e8 d7 77 ac fa e9 47 ff ff ff e8 3d 1e 80 fa <0f> 0b e8 36 1e 80 fa 0f b6 2d 39 e1 e8 05 31 ff 89 ee e8 a6 24 80 [ 70.628747][ T8459] RSP: 0018:ffffc9000163f1a0 EFLAGS: 00010293 [ 70.634817][ T8459] RAX: 0000000000000000 RBX: ffff88802814a000 RCX: 0000000000000000 [ 70.642784][ T8459] RDX: ffff888021678000 RSI: ffffffff86f25763 RDI: 0000000000000003 [ 70.650771][ T8459] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 [ 70.658747][ T8459] R10: ffffffff86f25683 R11: 0000000000000003 R12: ffff888028149ef8 [ 70.668099][ T8459] R13: ffff88802814a058 R14: dffffc0000000000 R15: ffff888028149ef8 [ 70.676076][ T8459] FS: 00000000010bf880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 70.685016][ T8459] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.691604][ T8459] CR2: 000055ade220a6d8 CR3: 0000000012719000 CR4: 00000000001506e0 [ 70.699597][ T8459] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.707570][ T8459] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.715543][ T8459] Call Trace: [ 70.718826][ T8459] __rtnl_newlink+0x1484/0x16e0 [ 70.723681][ T8459] ? rtnl_setlink+0x3b0/0x3b0 [ 70.728347][ T8459] ? unwind_next_frame+0xe3b/0x1f90 [ 70.733639][ T8459] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 70.739722][ T8459] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 70.745631][ T8459] ? is_bpf_text_address+0xcb/0x160 [ 70.750817][ T8459] ? kernel_text_address+0xbd/0xf0 [ 70.755921][ T8459] ? __kernel_text_address+0x9/0x30 [ 70.761109][ T8459] ? unwind_get_return_address+0x51/0x90 [ 70.766756][ T8459] ? create_prof_cpu_mask+0x20/0x20 [ 70.771971][ T8459] ? arch_stack_walk+0x93/0xe0 [ 70.776722][ T8459] ? stack_trace_save+0x8c/0xc0 [ 70.781567][ T8459] ? rtnl_newlink+0x46/0xa0 [ 70.786063][ T8459] ? mark_held_locks+0x9f/0xe0 [ 70.790814][ T8459] ? unpoison_range+0x3a/0x60 [ 70.795492][ T8459] rtnl_newlink+0x64/0xa0 [ 70.799807][ T8459] ? __rtnl_newlink+0x16e0/0x16e0 [ 70.805857][ T8459] rtnetlink_rcv_msg+0x44e/0xad0 [ 70.810803][ T8459] ? rtnetlink_put_metrics+0x510/0x510 [ 70.816250][ T8459] netlink_rcv_skb+0x153/0x420 [ 70.821022][ T8459] ? rtnetlink_put_metrics+0x510/0x510 [ 70.826498][ T8459] ? netlink_ack+0xaa0/0xaa0 [ 70.831095][ T8459] ? netlink_deliver_tap+0x227/0xb70 [ 70.836371][ T8459] netlink_unicast+0x533/0x7d0 [ 70.841140][ T8459] ? netlink_attachskb+0x870/0x870 [ 70.846244][ T8459] ? _copy_from_iter_full+0x275/0x850 [ 70.851608][ T8459] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 70.857864][ T8459] ? __phys_addr_symbol+0x2c/0x70 [ 70.862894][ T8459] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 70.868759][ T8459] ? __check_object_size+0x171/0x3f0 [ 70.874042][ T8459] netlink_sendmsg+0x856/0xd90 [ 70.885159][ T8459] ? netlink_unicast+0x7d0/0x7d0 [ 70.890103][ T8459] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 70.896350][ T8459] ? netlink_unicast+0x7d0/0x7d0 [ 70.901281][ T8459] sock_sendmsg+0xcf/0x120 [ 70.905690][ T8459] ____sys_sendmsg+0x6e8/0x810 [ 70.910458][ T8459] ? kernel_sendmsg+0x50/0x50 [ 70.915162][ T8459] ? do_recvmmsg+0x6c0/0x6c0 [ 70.919766][ T8459] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 70.925755][ T8459] ___sys_sendmsg+0xf3/0x170 [ 70.930338][ T8459] ? sendmsg_copy_msghdr+0x160/0x160 [ 70.935634][ T8459] ? lock_downgrade+0x6d0/0x6d0 [ 70.940474][ T8459] ? _copy_to_user+0xdc/0x150 [ 70.945136][ T8459] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 70.951391][ T8459] ? move_addr_to_user+0xad/0x1e0 [ 70.956415][ T8459] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 70.962659][ T8459] ? __fget_light+0x215/0x280 [ 70.967322][ T8459] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 70.973553][ T8459] __sys_sendmsg+0xe5/0x1b0 [ 70.978071][ T8459] ? __sys_sendmsg_sock+0xb0/0xb0 [ 70.983102][ T8459] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 70.989348][ T8459] ? syscall_enter_from_user_mode+0x1d/0x50 [ 70.995253][ T8459] do_syscall_64+0x2d/0x70 [ 70.999680][ T8459] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 71.005589][ T8459] RIP: 0033:0x4404b9 [ 71.009474][ T8459] 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 [ 71.029067][ T8459] RSP: 002b:00007fff3e934f98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 71.037470][ T8459] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004404b9 [ 71.045443][ T8459] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 [ 71.053414][ T8459] RBP: 00000000006ca018 R08: 0000000000000014 R09: 00000000004002c8 [ 71.061376][ T8459] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000401cc0 [ 71.069331][ T8459] R13: 0000000000401d50 R14: 0000000000000000 R15: 0000000000000000 [ 71.077304][ T8459] Modules linked in: [ 71.083410][ T8459] ---[ end trace ec4d68ff94a95202 ]--- [ 71.088928][ T8459] RIP: 0010:free_netdev+0x4b3/0x5e0 [ 71.094495][ T8459] Code: c0 01 38 d0 7c 08 84 d2 0f 85 1a 01 00 00 0f b7 83 32 02 00 00 48 29 c3 48 89 df e8 d7 77 ac fa e9 47 ff ff ff e8 3d 1e 80 fa <0f> 0b e8 36 1e 80 fa 0f b6 2d 39 e1 e8 05 31 ff 89 ee e8 a6 24 80 [ 71.115591][ T8459] RSP: 0018:ffffc9000163f1a0 EFLAGS: 00010293 [ 71.121678][ T8459] RAX: 0000000000000000 RBX: ffff88802814a000 RCX: 0000000000000000 [ 71.130181][ T8459] RDX: ffff888021678000 RSI: ffffffff86f25763 RDI: 0000000000000003 [ 71.138273][ T8459] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 [ 71.146349][ T8459] R10: ffffffff86f25683 R11: 0000000000000003 R12: ffff888028149ef8 [ 71.154674][ T8459] R13: ffff88802814a058 R14: dffffc0000000000 R15: ffff888028149ef8 [ 71.162667][ T8459] FS: 00000000010bf880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 71.171719][ T8459] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.178439][ T8459] CR2: 00007fd33803e118 CR3: 0000000012719000 CR4: 00000000001506f0 [ 71.186492][ T8459] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.194561][ T8459] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.202565][ T8459] Kernel panic - not syncing: Fatal exception [ 71.209147][ T8459] Kernel Offset: disabled [ 71.213508][ T8459] Rebooting in 86400 seconds..