[ 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 '10.128.0.49' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 113.268921][ T37] audit: type=1400 audit(1630325842.101:8): avc: denied { execmem } for pid=8462 comm="syz-executor972" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 113.272605][ T8462] ------------[ cut here ]------------ [ 113.295383][ T8462] trace type BPF program uses run-time allocation [ 113.302350][ T8462] WARNING: CPU: 1 PID: 8462 at kernel/bpf/verifier.c:11128 bpf_check+0xc498/0xcac0 [ 113.311809][ T8462] Modules linked in: [ 113.315757][ T8462] CPU: 0 PID: 8462 Comm: syz-executor972 Not tainted 5.14.0-rc7-syzkaller #0 [ 113.324670][ T8462] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 113.334776][ T8462] RIP: 0010:bpf_check+0xc498/0xcac0 [ 113.340057][ T8462] Code: 69 32 00 e9 68 89 ff ff e8 d5 69 32 00 e9 64 91 ff ff e8 9b a7 ec ff 48 c7 c7 80 e8 92 89 c6 05 a6 b2 cf 0b 01 e8 e0 13 60 07 <0f> 0b e9 1a b3 ff ff e8 7c 69 32 00 e9 4a b3 ff ff e8 72 69 32 00 [ 113.359725][ T8462] RSP: 0018:ffffc9000cfc78e8 EFLAGS: 00010282 [ 113.365898][ T8462] RAX: 0000000000000000 RBX: 0000000000000011 RCX: 0000000000000000 [ 113.374102][ T8462] RDX: ffff88803b6c2040 RSI: ffffffff815cba05 RDI: fffff520019f8f0f [ 113.382313][ T8462] RBP: ffffc9000cfc7b50 R08: 0000000000000000 R09: 0000000000000000 [ 113.390407][ T8462] R10: ffffffff815c580e R11: 0000000000000000 R12: ffff88802a245000 [ 113.398404][ T8462] R13: dffffc0000000000 R14: ffffc90001090058 R15: ffff88803da48000 [ 113.406483][ T8462] FS: 0000000000b68300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 113.415482][ T8462] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 113.422375][ T8462] CR2: 00007ffeec741020 CR3: 000000002ab39000 CR4: 00000000001506f0 [ 113.430440][ T8462] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 113.438424][ T8462] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 113.446569][ T8462] Call Trace: [ 113.449928][ T8462] ? bpf_get_btf_vmlinux+0x10/0x10 [ 113.455053][ T8462] ? lock_downgrade+0x6e0/0x6e0 [ 113.459969][ T8462] ? __might_fault+0xd3/0x180 [ 113.464649][ T8462] ? memset+0x20/0x40 [ 113.468666][ T8462] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 113.474950][ T8462] ? bpf_obj_name_cpy+0x144/0x1a0 [ 113.480055][ T8462] ? bpf_prog_load+0xe16/0x21e0 [ 113.484907][ T8462] bpf_prog_load+0xe57/0x21e0 [ 113.489567][ T8462] ? __bpf_prog_put.constprop.0+0x1a0/0x1a0 [ 113.495503][ T8462] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 113.501974][ T8462] ? avc_has_perm+0x107/0x1b0 [ 113.506780][ T8462] ? lock_downgrade+0x6e0/0x6e0 [ 113.512302][ T8462] ? selinux_bpf+0xe2/0x120 [ 113.516872][ T8462] ? security_bpf+0x83/0xb0 [ 113.521815][ T8462] __sys_bpf+0x64f/0x4760 [ 113.526227][ T8462] ? bpf_link_get_from_fd+0x110/0x110 [ 113.532402][ T8462] ? find_held_lock+0x2d/0x110 [ 113.537189][ T8462] ? trace_hardirqs_on+0x38/0x1c0 [ 113.543007][ T8462] __x64_sys_bpf+0x75/0xb0 [ 113.547441][ T8462] ? syscall_enter_from_user_mode+0x21/0x70 [ 113.553984][ T8462] do_syscall_64+0x35/0xb0 [ 113.558422][ T8462] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 113.564709][ T8462] RIP: 0033:0x43f199 [ 113.568628][ T8462] 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 [ 113.588835][ T8462] RSP: 002b:00007ffeec64ba48 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 113.597800][ T8462] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f199 [ 113.605951][ T8462] RDX: 0000000000000078 RSI: 0000000020000240 RDI: 0000000000000005 [ 113.614003][ T8462] RBP: 0000000000403180 R08: 0000000000000000 R09: 0000000000400488 [ 113.622052][ T8462] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403210 [ 113.630074][ T8462] R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488 [ 113.638050][ T8462] Kernel panic - not syncing: panic_on_warn set ... [ 113.644620][ T8462] CPU: 0 PID: 8462 Comm: syz-executor972 Not tainted 5.14.0-rc7-syzkaller #0 [ 113.653367][ T8462] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 113.663415][ T8462] Call Trace: [ 113.666686][ T8462] dump_stack_lvl+0xcd/0x134 [ 113.671271][ T8462] panic+0x306/0x73d [ 113.675159][ T8462] ? __warn_printk+0xf3/0xf3 [ 113.679741][ T8462] ? __warn.cold+0x1a/0x44 [ 113.684145][ T8462] ? bpf_check+0xc498/0xcac0 [ 113.688731][ T8462] __warn.cold+0x35/0x44 [ 113.692966][ T8462] ? wake_up_klogd.part.0+0x8e/0xd0 [ 113.698157][ T8462] ? bpf_check+0xc498/0xcac0 [ 113.702745][ T8462] report_bug+0x1bd/0x210 [ 113.707071][ T8462] handle_bug+0x3c/0x60 [ 113.711223][ T8462] exc_invalid_op+0x14/0x40 [ 113.715718][ T8462] asm_exc_invalid_op+0x12/0x20 [ 113.720563][ T8462] RIP: 0010:bpf_check+0xc498/0xcac0 [ 113.725756][ T8462] Code: 69 32 00 e9 68 89 ff ff e8 d5 69 32 00 e9 64 91 ff ff e8 9b a7 ec ff 48 c7 c7 80 e8 92 89 c6 05 a6 b2 cf 0b 01 e8 e0 13 60 07 <0f> 0b e9 1a b3 ff ff e8 7c 69 32 00 e9 4a b3 ff ff e8 72 69 32 00 [ 113.745355][ T8462] RSP: 0018:ffffc9000cfc78e8 EFLAGS: 00010282 [ 113.751412][ T8462] RAX: 0000000000000000 RBX: 0000000000000011 RCX: 0000000000000000 [ 113.759487][ T8462] RDX: ffff88803b6c2040 RSI: ffffffff815cba05 RDI: fffff520019f8f0f [ 113.767449][ T8462] RBP: ffffc9000cfc7b50 R08: 0000000000000000 R09: 0000000000000000 [ 113.775408][ T8462] R10: ffffffff815c580e R11: 0000000000000000 R12: ffff88802a245000 [ 113.783370][ T8462] R13: dffffc0000000000 R14: ffffc90001090058 R15: ffff88803da48000 [ 113.791344][ T8462] ? wake_up_klogd.part.0+0x8e/0xd0 [ 113.796537][ T8462] ? vprintk+0x95/0x260 [ 113.800686][ T8462] ? bpf_check+0xc498/0xcac0 [ 113.805274][ T8462] ? bpf_get_btf_vmlinux+0x10/0x10 [ 113.810380][ T8462] ? lock_downgrade+0x6e0/0x6e0 [ 113.815222][ T8462] ? __might_fault+0xd3/0x180 [ 113.819905][ T8462] ? memset+0x20/0x40 [ 113.823880][ T8462] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 113.830112][ T8462] ? bpf_obj_name_cpy+0x144/0x1a0 [ 113.835134][ T8462] ? bpf_prog_load+0xe16/0x21e0 [ 113.839989][ T8462] bpf_prog_load+0xe57/0x21e0 [ 113.844660][ T8462] ? __bpf_prog_put.constprop.0+0x1a0/0x1a0 [ 113.850548][ T8462] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 113.856780][ T8462] ? avc_has_perm+0x107/0x1b0 [ 113.861479][ T8462] ? lock_downgrade+0x6e0/0x6e0 [ 113.866340][ T8462] ? selinux_bpf+0xe2/0x120 [ 113.870853][ T8462] ? security_bpf+0x83/0xb0 [ 113.875348][ T8462] __sys_bpf+0x64f/0x4760 [ 113.879671][ T8462] ? bpf_link_get_from_fd+0x110/0x110 [ 113.885035][ T8462] ? find_held_lock+0x2d/0x110 [ 113.889795][ T8462] ? trace_hardirqs_on+0x38/0x1c0 [ 113.894822][ T8462] __x64_sys_bpf+0x75/0xb0 [ 113.899232][ T8462] ? syscall_enter_from_user_mode+0x21/0x70 [ 113.905133][ T8462] do_syscall_64+0x35/0xb0 [ 113.909546][ T8462] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 113.915522][ T8462] RIP: 0033:0x43f199 [ 113.919493][ T8462] 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 [ 113.939091][ T8462] RSP: 002b:00007ffeec64ba48 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 113.947496][ T8462] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f199 [ 113.955458][ T8462] RDX: 0000000000000078 RSI: 0000000020000240 RDI: 0000000000000005 [ 113.963419][ T8462] RBP: 0000000000403180 R08: 0000000000000000 R09: 0000000000400488 [ 113.971380][ T8462] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403210 [ 113.979343][ T8462] R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488 [ 113.988899][ T8462] Kernel Offset: disabled [ 113.993282][ T8462] Rebooting in 86400 seconds..