./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor147190132 <...> Warning: Permanently added '10.128.0.46' (ECDSA) to the list of known hosts. execve("./syz-executor147190132", ["./syz-executor147190132"], 0x7fff18595830 /* 10 vars */) = 0 brk(NULL) = 0x555557111000 brk(0x555557111c40) = 0x555557111c40 arch_prctl(ARCH_SET_FS, 0x555557111300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor147190132", 4096) = 27 brk(0x555557132c40) = 0x555557132c40 brk(0x555557133000) = 0x555557133000 mprotect(0x7fce2d759000, 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_ACT, insn_cnt=14, insns=0x20000840, license="syzkaller", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS}, 72) = 3 [ 18.568476][ T22] audit: type=1400 audit(1652304011.110:73): avc: denied { execmem } for pid=304 comm="syz-executor147" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 18.571757][ T22] audit: type=1400 audit(1652304011.120:74): avc: denied { prog_load } for pid=304 comm="syz-executor147" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 18.572420][ T304] kasan: CONFIG_KASAN_INLINE enabled [ 18.574391][ T22] audit: type=1400 audit(1652304011.120:75): avc: denied { prog_run } for pid=304 comm="syz-executor147" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 18.575116][ T304] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 18.579091][ T304] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 18.580143][ T304] CPU: 1 PID: 304 Comm: syz-executor147 Not tainted 5.4.180-syzkaller-00005-gb2ca0128d238 #0 [ 18.581530][ T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.583123][ T304] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x111/0x280 [ 18.584002][ T304] Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 80 42 2a fe 48 8b 1b 48 8d bb 1c 01 00 00 48 89 f8 48 c1 e8 03 <42> 8a 04 20 84 c0 0f 85 3e 01 00 00 8b ab 1c 01 00 00 89 ef 44 89 [ 18.586632][ T304] RSP: 0018:ffff8881ddfcf908 EFLAGS: 00010203 [ 18.587438][ T304] RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 [ 18.588526][ T304] RDX: ffff8881de332f40 RSI: 0000000000000080 RDI: 000000000000011c [ 18.595985][ T304] RBP: 0000000000000080 R08: ffffffff83625c57 R09: ffff8881ddfcfb70 [ 18.603925][ T304] R10: ffffed103bbf9f70 R11: 1ffff1103bbf9f6e R12: dffffc0000000000 [ 18.611863][ T304] R13: 00000000000000f0 R14: 0000000000000000 R15: ffff8881ddffa812 [ 18.619806][ T304] FS: 0000555557111300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 18.628708][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.635256][ T304] CR2: 000055d089c69768 CR3: 00000001dde9d000 CR4: 00000000003406e0 [ 18.643196][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.651136][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.659074][ T304] Call Trace: [ 18.662337][ T304] ? common_interrupt+0xa/0xf [ 18.666980][ T304] ? ktime_get+0xfd/0x130 [ 18.671277][ T304] ? bpf_test_run+0x260/0x640 [ 18.675924][ T304] ? bpf_prog_test_run_skb+0x7a2/0xf00 [ 18.681349][ T304] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 18.687124][ T304] ? __se_sys_bpf+0x2b7b/0xb990 [ 18.691939][ T304] ? __schedule+0x8d3/0xfc0 [ 18.696408][ T304] ? cgroup_update_frozen+0x139/0x360 [ 18.701742][ T304] ? _raw_spin_lock_irq+0x6d/0x170 [ 18.706816][ T304] ? _raw_spin_lock_irq+0x6d/0x170 [ 18.711891][ T304] ? ptrace_stop+0x6eb/0xa30 [ 18.716448][ T304] ? syscall_trace_enter+0x5c2/0x860 [ 18.721700][ T304] ? __fpregs_load_activate+0x163/0x310 [ 18.727210][ T304] ? do_syscall_64+0xcb/0x1c0 [ 18.731852][ T304] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 18.737895][ T304] Modules linked in: [ 18.741811][ T304] ---[ end trace 1e92102732240547 ]--- [ 18.747250][ T304] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x111/0x280 [ 18.753746][ T304] Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 80 42 2a fe 48 8b 1b 48 8d bb 1c 01 00 00 48 89 f8 48 c1 e8 03 <42> 8a 04 20 84 c0 0f 85 3e 01 00 00 8b ab 1c 01 00 00 89 ef 44 89 [ 18.773342][ T304] RSP: 0018:ffff8881ddfcf908 EFLAGS: 00010203 [ 18.779395][ T304] RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 [ 18.787343][ T304] RDX: ffff8881de332f40 RSI: 0000000000000080 RDI: 000000000000011c [ 18.795310][ T304] RBP: 0000000000000080 R08: ffffffff83625c57 R09: ffff8881ddfcfb70 [ 18.803271][ T304] R10: ffffed103bbf9f70 R11: 1ffff1103bbf9f6e R12: dffffc0000000000 [ 18.811234][ T304] R13: 00000000000000f0 R14: 0000000000000000 R15: ffff8881ddffa812 [ 18.819186][ T304] FS: 0000555557111300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 18.828106][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.834699][ T304] CR2: 000055d089c69768 CR3: 00000001dde9d000 CR4: 00000000003406e0 [ 18.842665][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.850625][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.858564][ T304] Kernel panic - not syncing: Fatal exception [ 18.864764][ T304] Kernel Offset: disabled [ 18.869062][ T304] Rebooting in 86400 seconds..