[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.133' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 74.329759][ T8436] general protection fault, probably for non-canonical address 0xdffffc0000000029: 0000 [#1] PREEMPT SMP KASAN [ 74.341477][ T8436] KASAN: null-ptr-deref in range [0x0000000000000148-0x000000000000014f] [ 74.349865][ T8436] CPU: 1 PID: 8436 Comm: syz-executor679 Not tainted 5.14.0-syzkaller #0 [ 74.358256][ T8436] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.368290][ T8436] RIP: 0010:bpf_skb_cgroup_id+0x138/0x210 [ 74.374010][ T8436] Code: 03 80 3c 02 00 0f 85 cc 00 00 00 48 8b 9b 58 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 48 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ad 00 00 00 48 8b 9b 48 01 00 00 48 b8 00 00 00 [ 74.393597][ T8436] RSP: 0018:ffffc9000184f9c0 EFLAGS: 00010202 [ 74.399650][ T8436] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 74.407606][ T8436] RDX: 0000000000000029 RSI: ffffffff8728f537 RDI: 0000000000000148 [ 74.415561][ T8436] RBP: 0000000000000080 R08: 0000000000000000 R09: 0000000000000007 [ 74.423513][ T8436] R10: ffffffff8728f52a R11: 000000000000001f R12: 0000000000000007 [ 74.431466][ T8436] R13: ffffc90000e6a000 R14: ffffc9000184fc30 R15: ffffc90000e6a048 [ 74.439423][ T8436] FS: 0000000000f5e300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 74.448334][ T8436] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.454901][ T8436] CR2: 00000000200004c0 CR3: 000000001d929000 CR4: 00000000001506e0 [ 74.462855][ T8436] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.470804][ T8436] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.478763][ T8436] Call Trace: [ 74.482038][ T8436] bpf_prog_3a33f00dea259162+0x10/0xfa8 [ 74.487576][ T8436] bpf_test_run+0x381/0xa30 [ 74.492068][ T8436] ? bpf_test_timer_continue+0x420/0x420 [ 74.497685][ T8436] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 74.503909][ T8436] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 74.510128][ T8436] ? __phys_addr+0xc4/0x140 [ 74.514615][ T8436] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 74.520836][ T8436] ? eth_type_trans+0x29e/0x640 [ 74.525672][ T8436] ? __build_skb+0x50/0x60 [ 74.530071][ T8436] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.536295][ T8436] bpf_prog_test_run_skb+0xac5/0x1d20 [ 74.541700][ T8436] ? bpf_prog_test_run_raw_tp+0x630/0x630 [ 74.547447][ T8436] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.553672][ T8436] ? __fget_light+0x215/0x280 [ 74.558334][ T8436] ? __sys_bpf+0x2094/0x5df0 [ 74.562907][ T8436] ? bpf_prog_test_run_raw_tp+0x630/0x630 [ 74.568606][ T8436] __sys_bpf+0x2137/0x5df0 [ 74.573008][ T8436] ? bpf_link_get_from_fd+0x110/0x110 [ 74.578370][ T8436] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 74.584334][ T8436] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 74.590302][ T8436] ? find_held_lock+0x2d/0x110 [ 74.595061][ T8436] ? trace_hardirqs_on+0x38/0x1c0 [ 74.600077][ T8436] __x64_sys_bpf+0x75/0xb0 [ 74.604483][ T8436] ? syscall_enter_from_user_mode+0x21/0x70 [ 74.610372][ T8436] do_syscall_64+0x35/0xb0 [ 74.614772][ T8436] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 74.620659][ T8436] RIP: 0033:0x43f009 [ 74.624547][ T8436] 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 [ 74.644147][ T8436] RSP: 002b:00007ffcff384d88 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 74.652544][ T8436] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f009 [ 74.660499][ T8436] RDX: 0000000000000028 RSI: 0000000020000440 RDI: 000000000000000a [ 74.668453][ T8436] RBP: 0000000000402ff0 R08: 0000000000000000 R09: 0000000000400488 [ 74.676416][ T8436] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403080 [ 74.684382][ T8436] R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488 [ 74.692339][ T8436] Modules linked in: [ 74.696474][ T8436] ---[ end trace d161abccc2184019 ]--- [ 74.701925][ T8436] RIP: 0010:bpf_skb_cgroup_id+0x138/0x210 [ 74.707711][ T8436] Code: 03 80 3c 02 00 0f 85 cc 00 00 00 48 8b 9b 58 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 48 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ad 00 00 00 48 8b 9b 48 01 00 00 48 b8 00 00 00 [ 74.727372][ T8436] RSP: 0018:ffffc9000184f9c0 EFLAGS: 00010202 [ 74.733471][ T8436] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 74.741440][ T8436] RDX: 0000000000000029 RSI: ffffffff8728f537 RDI: 0000000000000148 [ 74.749437][ T8436] RBP: 0000000000000080 R08: 0000000000000000 R09: 0000000000000007 [ 74.757442][ T8436] R10: ffffffff8728f52a R11: 000000000000001f R12: 0000000000000007 [ 74.765434][ T8436] R13: ffffc90000e6a000 R14: ffffc9000184fc30 R15: ffffc90000e6a048 [ 74.773434][ T8436] FS: 0000000000f5e300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 74.782363][ T8436] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.788962][ T8436] CR2: 00000000200004c0 CR3: 000000001d929000 CR4: 00000000001506e0 [ 74.796965][ T8436] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.804990][ T8436] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.812997][ T8436] Kernel panic - not syncing: Fatal exception [ 74.819296][ T8436] Kernel Offset: disabled [ 74.823603][ T8436] Rebooting in 86400 seconds..