[ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.121' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 68.046592][ T8370] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 68.058318][ T8370] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 68.066708][ T8370] CPU: 0 PID: 8370 Comm: syz-executor871 Not tainted 5.11.0-syzkaller #0 [ 68.075145][ T8370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.085264][ T8370] RIP: 0010:btf_type_id_size+0x40e/0x960 [ 68.090898][ T8370] Code: 48 c1 e9 03 80 3c 11 00 0f 85 17 05 00 00 49 8b 47 10 44 29 f3 48 8d 1c 98 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ec [ 68.110494][ T8370] RSP: 0018:ffffc9000101fd18 EFLAGS: 00010203 [ 68.116538][ T8370] RAX: dffffc0000000000 RBX: 0000000000000014 RCX: 1ffff1100422e2c2 [ 68.124491][ T8370] RDX: 0000000000000002 RSI: ffffffff818b12f3 RDI: ffff888021171610 [ 68.132442][ T8370] RBP: ffff888021171600 R08: 0000000000000005 R09: ffffffff818b114a [ 68.140393][ T8370] R10: ffffffff818b128e R11: 000000000000000a R12: 0000000000000000 [ 68.148344][ T8370] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888021171600 [ 68.156331][ T8370] FS: 00000000018d4300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 68.165251][ T8370] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.171817][ T8370] CR2: 00000000004ae0f0 CR3: 000000001b8d1000 CR4: 00000000001506f0 [ 68.179780][ T8370] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.187740][ T8370] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.195689][ T8370] Call Trace: [ 68.198954][ T8370] __do_sys_bpf+0x4000/0x4f00 [ 68.203617][ T8370] ? lock_is_held_type+0xd5/0x130 [ 68.208640][ T8370] ? bpf_link_get_from_fd+0x110/0x110 [ 68.213994][ T8370] ? __up_read+0x1a1/0x7b0 [ 68.218392][ T8370] ? _down_write_nest_lock+0x150/0x150 [ 68.223833][ T8370] ? syscall_enter_from_user_mode+0x1d/0x50 [ 68.229709][ T8370] do_syscall_64+0x2d/0x70 [ 68.234107][ T8370] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 68.239982][ T8370] RIP: 0033:0x43ff09 [ 68.243869][ T8370] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 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 c0 ff ff ff f7 d8 64 89 01 48 [ 68.263454][ T8370] RSP: 002b:00007fff1b1e3698 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 68.271846][ T8370] RAX: ffffffffffffffda RBX: 00000000000108f7 RCX: 000000000043ff09 [ 68.279813][ T8370] RDX: 0000000000000040 RSI: 0000000020000000 RDI: 0000000000000000 [ 68.287860][ T8370] RBP: 0000000000000000 R08: 00007fff1b1e3838 R09: 00007fff1b1e3838 [ 68.295811][ T8370] R10: 00007fff1b1e3838 R11: 0000000000000246 R12: 00007fff1b1e36ac [ 68.303761][ T8370] R13: 431bde82d7b634db R14: 00000000004ae018 R15: 0000000000400488 [ 68.311729][ T8370] Modules linked in: [ 68.319925][ T8370] ---[ end trace 0ac623fda86313d5 ]--- [ 68.325498][ T8370] RIP: 0010:btf_type_id_size+0x40e/0x960 [ 68.331674][ T8370] Code: 48 c1 e9 03 80 3c 11 00 0f 85 17 05 00 00 49 8b 47 10 44 29 f3 48 8d 1c 98 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ec [ 68.351714][ T8370] RSP: 0018:ffffc9000101fd18 EFLAGS: 00010203 [ 68.358146][ T8370] RAX: dffffc0000000000 RBX: 0000000000000014 RCX: 1ffff1100422e2c2 [ 68.366480][ T8370] RDX: 0000000000000002 RSI: ffffffff818b12f3 RDI: ffff888021171610 [ 68.374464][ T8370] RBP: ffff888021171600 R08: 0000000000000005 R09: ffffffff818b114a [ 68.383079][ T8370] R10: ffffffff818b128e R11: 000000000000000a R12: 0000000000000000 [ 68.391466][ T8370] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888021171600 [ 68.399488][ T8370] FS: 00000000018d4300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 68.408459][ T8370] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.415043][ T8370] CR2: 00007f5fe3823ab4 CR3: 000000001b8d1000 CR4: 00000000001506f0 [ 68.423046][ T8370] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.431045][ T8370] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.439046][ T8370] Kernel panic - not syncing: Fatal exception [ 68.445754][ T8370] Kernel Offset: disabled [ 68.450065][ T8370] Rebooting in 86400 seconds..