[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started OpenBSD Secure Shell server. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.165' (ECDSA) to the list of known hosts. syzkaller login: [ 73.171599][ T8438] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 73.183628][ T8438] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 73.192133][ T8438] CPU: 0 PID: 8438 Comm: syz-executor098 Not tainted 5.13.0-rc3-syzkaller #0 [ 73.201315][ T8438] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.211550][ T8438] RIP: 0010:hwsim_del_edge_nl+0xf4/0x7c0 [ 73.217218][ T8438] Code: 00 0f 85 80 06 00 00 4d 85 ed 48 8b 5b 10 0f 84 87 05 00 00 e8 8d e4 4a fc 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 cd [ 73.236829][ T8438] RSP: 0018:ffffc9000111f570 EFLAGS: 00010246 [ 73.242887][ T8438] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 73.250939][ T8438] RDX: 0000000000000000 RSI: ffffffff8529f7f3 RDI: ffff888017673d10 [ 73.258917][ T8438] RBP: ffffc9000111f678 R08: 0000000000000001 R09: ffffc9000111f6a8 [ 73.266985][ T8438] R10: fffff52000223ed6 R11: 0000000000000000 R12: ffffc9000111f698 [ 73.275079][ T8438] R13: ffff88802a378014 R14: ffff8880135be780 R15: 0000000000000000 [ 73.283139][ T8438] FS: 00000000021dc300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 73.292224][ T8438] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.298892][ T8438] CR2: 0000000020000000 CR3: 000000002abb4000 CR4: 00000000001506f0 [ 73.306871][ T8438] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.314926][ T8438] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.323090][ T8438] Call Trace: [ 73.326391][ T8438] ? hwsim_hw_xmit+0x690/0x690 [ 73.331165][ T8438] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.337406][ T8438] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x1b7/0x290 [ 73.344785][ T8438] ? genl_family_rcv_msg_attrs_parse.constprop.0+0xaf/0x290 [ 73.352079][ T8438] genl_family_rcv_msg_doit+0x228/0x320 [ 73.357716][ T8438] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x290/0x290 [ 73.365116][ T8438] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.371392][ T8438] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.377712][ T8438] ? ns_capable+0xde/0x100 [ 73.382128][ T8438] genl_rcv_msg+0x328/0x580 [ 73.386888][ T8438] ? genl_get_cmd+0x480/0x480 [ 73.391727][ T8438] ? hwsim_hw_xmit+0x690/0x690 [ 73.396481][ T8438] ? lock_release+0x720/0x720 [ 73.401438][ T8438] netlink_rcv_skb+0x153/0x420 [ 73.406191][ T8438] ? genl_get_cmd+0x480/0x480 [ 73.411061][ T8438] ? netlink_ack+0xaa0/0xaa0 [ 73.415660][ T8438] genl_rcv+0x24/0x40 [ 73.419631][ T8438] netlink_unicast+0x533/0x7d0 [ 73.424428][ T8438] ? netlink_attachskb+0x870/0x870 [ 73.429576][ T8438] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 73.436193][ T8438] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 73.442441][ T8438] ? __phys_addr_symbol+0x2c/0x70 [ 73.447575][ T8438] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 73.453564][ T8438] ? __check_object_size+0x171/0x3f0 [ 73.458998][ T8438] netlink_sendmsg+0x856/0xd90 [ 73.463896][ T8438] ? netlink_unicast+0x7d0/0x7d0 [ 73.468823][ T8438] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.475072][ T8438] ? netlink_unicast+0x7d0/0x7d0 [ 73.480021][ T8438] sock_sendmsg+0xcf/0x120 [ 73.484431][ T8438] ____sys_sendmsg+0x6e8/0x810 [ 73.489296][ T8438] ? kernel_sendmsg+0x50/0x50 [ 73.494058][ T8438] ? do_recvmmsg+0x6d0/0x6d0 [ 73.498661][ T8438] ? do_huge_pmd_anonymous_page+0x124b/0x2570 [ 73.504720][ T8438] ? lock_downgrade+0x6e0/0x6e0 [ 73.509652][ T8438] ___sys_sendmsg+0xf3/0x170 [ 73.514253][ T8438] ? sendmsg_copy_msghdr+0x160/0x160 [ 73.519549][ T8438] ? __lock_acquire+0x16a7/0x5230 [ 73.524568][ T8438] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 73.530547][ T8438] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 73.536620][ T8438] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.543322][ T8438] ? __fget_light+0x215/0x280 [ 73.547995][ T8438] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 73.554324][ T8438] __sys_sendmsg+0xe5/0x1b0 [ 73.558842][ T8438] ? __sys_sendmsg_sock+0x30/0x30 [ 73.563886][ T8438] ? syscall_enter_from_user_mode+0x27/0x70 [ 73.569799][ T8438] do_syscall_64+0x3a/0xb0 [ 73.574297][ T8438] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 73.580269][ T8438] RIP: 0033:0x43ef59 [ 73.584324][ T8438] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 73.604203][ T8438] RSP: 002b:00007fff0ab80248 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 73.612756][ T8438] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043ef59 executing program [ 73.620881][ T8438] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 [ 73.628857][ T8438] RBP: 0000000000402f40 R08: 0000000000000000 R09: 0000000000400488 [ 73.636936][ T8438] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402fd0 [ 73.645327][ T8438] R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 [ 73.653311][ T8438] Modules linked in: [ 73.660345][ T8438] ---[ end trace 70bc8381c1572d71 ]--- [ 73.665939][ T8438] RIP: 0010:hwsim_del_edge_nl+0xf4/0x7c0 [ 73.672019][ T8438] Code: 00 0f 85 80 06 00 00 4d 85 ed 48 8b 5b 10 0f 84 87 05 00 00 e8 8d e4 4a fc 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 cd [ 73.692375][ T8438] RSP: 0018:ffffc9000111f570 EFLAGS: 00010246 [ 73.698719][ T8438] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 73.706740][ T8438] RDX: 0000000000000000 RSI: ffffffff8529f7f3 RDI: ffff888017673d10 [ 73.715312][ T8438] RBP: ffffc9000111f678 R08: 0000000000000001 R09: ffffc9000111f6a8 [ 73.723459][ T8438] R10: fffff52000223ed6 R11: 0000000000000000 R12: ffffc9000111f698 [ 73.731620][ T8438] R13: ffff88802a378014 R14: ffff8880135be780 R15: 0000000000000000 [ 73.739781][ T8438] FS: 00000000021dc300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 73.748816][ T8438] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.755543][ T8438] CR2: 00007f5b4e249000 CR3: 000000002abb4000 CR4: 00000000001506e0 [ 73.763650][ T8438] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.771779][ T8438] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.779809][ T8438] Kernel panic - not syncing: Fatal exception [ 73.786471][ T8438] Kernel Offset: disabled [ 73.790807][ T8438] Rebooting in 86400 seconds..