./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3786574135 <...> Warning: Permanently added '10.128.0.235' (ED25519) to the list of known hosts. execve("./syz-executor3786574135", ["./syz-executor3786574135"], 0x7ffd64d5f450 /* 10 vars */) = 0 brk(NULL) = 0x55555629f000 brk(0x55555629fd00) = 0x55555629fd00 arch_prctl(ARCH_SET_FS, 0x55555629f380) = 0 set_tid_address(0x55555629f650) = 356 set_robust_list(0x55555629f660, 24) = 0 rseq(0x55555629fca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3786574135", 4096) = 28 getrandom("\x5d\xc4\xbb\xfa\x53\x6c\xc9\x2d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555629fd00 brk(0x5555562c0d00) = 0x5555562c0d00 brk(0x5555562c1000) = 0x5555562c1000 mprotect(0x7eff09039000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SCHED_CLS, insn_cnt=4, insns=0x20000780, license="GPL"}, 21) = 3 [ 23.594610][ T23] audit: type=1400 audit(1696285613.179:66): avc: denied { execmem } for pid=356 comm="syz-executor378" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.613891][ T23] audit: type=1400 audit(1696285613.179:67): avc: denied { prog_load } for pid=356 comm="syz-executor378" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 23.614515][ T356] kasan: CONFIG_KASAN_INLINE enabled [ 23.633116][ T23] audit: type=1400 audit(1696285613.199:68): avc: denied { prog_run } for pid=356 comm="syz-executor378" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 23.638092][ T356] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.664816][ T356] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 23.671588][ T356] CPU: 1 PID: 356 Comm: syz-executor378 Not tainted 5.4.254-syzkaller-00010-g5f1cbd78af59 #0 [ 23.681563][ T356] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 23.691464][ T356] RIP: 0010:bpf_skb_cgroup_id+0x10f/0x190 [ 23.697014][ T356] Code: c7 a0 02 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 b0 9d 0c fe bb 40 01 00 00 49 03 1f 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 92 9d 0c fe 48 8b 1b 48 83 c3 68 [ 23.716539][ T356] RSP: 0018:ffff8881dc767640 EFLAGS: 00010206 [ 23.722440][ T356] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881dca03f00 [ 23.730252][ T356] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 23.738064][ T356] RBP: ffff8881dc767690 R08: ffffffff83876726 R09: ffff8881dc767760 [ 23.745876][ T356] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 23.753687][ T356] R13: fffffffa816f5cdc R14: ffff8881de03a012 R15: ffff8881de03a2a0 [ 23.761499][ T356] FS: 000055555629f380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 23.770265][ T356] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.776686][ T356] CR2: 000000000069e248 CR3: 00000001dc590000 CR4: 00000000003406a0 [ 23.784500][ T356] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.792333][ T356] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.800303][ T356] Call Trace: [ 23.803438][ T356] ? __die+0xb4/0x100 [ 23.807244][ T356] ? die+0x26/0x50 [ 23.810802][ T356] ? do_general_protection+0x266/0x3c0 [ 23.816098][ T356] ? __kasan_kmalloc+0x1d9/0x210 [ 23.820867][ T356] ? do_trap+0x340/0x340 [ 23.824946][ T356] ? __kasan_kmalloc+0x171/0x210 [ 23.829722][ T356] ? kmem_cache_alloc+0xd9/0x250 [ 23.834493][ T356] ? build_skb+0x26/0x440 [ 23.838668][ T356] ? bpf_prog_test_run_skb+0x302/0xf00 [ 23.843954][ T356] ? do_syscall_64+0xca/0x1c0 [ 23.848468][ T356] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 23.854369][ T356] ? general_protection+0x28/0x30 [ 23.859233][ T356] ? bpf_skb_cgroup_id+0xd6/0x190 [ 23.864100][ T356] ? bpf_skb_cgroup_id+0x10f/0x190 [ 23.869038][ T356] ? bpf_test_run+0x2ae/0x6c0 [ 23.873567][ T356] ? bpf_ctx_init+0x1a0/0x1a0 [ 23.878064][ T356] ? build_skb+0x259/0x440 [ 23.882318][ T356] ? bpf_prog_test_run_skb+0x73c/0xf00 [ 23.887611][ T356] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 23.893254][ T356] ? __bpf_prog_get+0x287/0x310 [ 23.897940][ T356] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 23.903591][ T356] ? __se_sys_bpf+0x2e37/0xbcb0 [ 23.908269][ T356] ? check_preemption_disabled+0x9f/0x320 [ 23.913824][ T356] ? debug_smp_processor_id+0x20/0x20 [ 23.919031][ T356] ? check_preemption_disabled+0x9f/0x320 [ 23.924588][ T356] ? check_preemption_disabled+0x9f/0x320 [ 23.930141][ T356] ? debug_smp_processor_id+0x20/0x20 [ 23.935346][ T356] ? debug_smp_processor_id+0x20/0x20 [ 23.940556][ T356] ? __x64_sys_bpf+0x80/0x80 [ 23.944981][ T356] ? switch_mm_irqs_off+0x6b5/0xab0 [ 23.950026][ T356] ? _raw_spin_unlock_irq+0x4a/0x60 [ 23.955049][ T356] ? finish_task_switch+0x130/0x590 [ 23.960083][ T356] ? __schedule+0xb0d/0x1320 [ 23.964513][ T356] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 23.969458][ T356] ? _raw_spin_lock_irqsave+0x210/0x210 [ 23.974840][ T356] ? cgroup_update_frozen+0x157/0xab0 [ 23.980046][ T356] ? cgroup_update_frozen+0x157/0xab0 [ 23.985252][ T356] ? cgroup_leave_frozen+0x13c/0x290 [ 23.990375][ T356] ? ptrace_stop+0x6ee/0xa30 [ 23.994799][ T356] ? _raw_spin_unlock_irq+0x4a/0x60 [ 23.999834][ T356] ? ptrace_notify+0x24c/0x350 [ 24.004434][ T356] ? do_notify_parent+0xa10/0xa10 [ 24.009297][ T356] ? check_preemption_disabled+0x153/0x320 [ 24.014936][ T356] ? syscall_trace_enter+0x650/0x940 [ 24.020060][ T356] ? do_syscall_64+0xca/0x1c0 [ 24.024568][ T356] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 24.030468][ T356] Modules linked in: [ 24.034257][ T356] ---[ end trace f770f603e0dc282b ]--- [ 24.039540][ T356] RIP: 0010:bpf_skb_cgroup_id+0x10f/0x190 [ 24.045060][ T356] Code: c7 a0 02 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 b0 9d 0c fe bb 40 01 00 00 49 03 1f 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 92 9d 0c fe 48 8b 1b 48 83 c3 68 [ 24.064541][ T356] RSP: 0018:ffff8881dc767640 EFLAGS: 00010206 [ 24.070424][ T356] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881dca03f00 [ 24.078223][ T356] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 24.086020][ T356] RBP: ffff8881dc767690 R08: ffffffff83876726 R09: ffff8881dc767760 [ 24.093856][ T356] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 24.101658][ T356] R13: fffffffa816f5cdc R14: ffff8881de03a012 R15: ffff8881de03a2a0 [ 24.109481][ T356] FS: 000055555629f380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 24.118236][ T356] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.124640][ T356] CR2: 000000000069e248 CR3: 00000001dc590000 CR4: 00000000003406a0 [ 24.132488][ T356] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.140280][ T356] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.148097][ T356] Kernel panic - not syncing: Fatal exception [ 24.154260][ T356] Kernel Offset: disabled [ 24.158394][ T356] Rebooting in 86400 seconds..