./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor492656711 <...> Warning: Permanently added '10.128.0.167' (ECDSA) to the list of known hosts. execve("./syz-executor492656711", ["./syz-executor492656711"], 0x7ffda3126ef0 /* 10 vars */) = 0 brk(NULL) = 0x5555573d5000 brk(0x5555573d5c40) = 0x5555573d5c40 arch_prctl(ARCH_SET_FS, 0x5555573d5300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor492656711", 4096) = 27 brk(0x5555573f6c40) = 0x5555573f6c40 brk(0x5555573f7000) = 0x5555573f7000 mprotect(0x7f840c85b000, 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=0x200019c0, 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 [ 18.570901][ T22] audit: type=1400 audit(1660974054.089:73): avc: denied { execmem } for pid=301 comm="syz-executor492" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 18.574269][ T22] audit: type=1400 audit(1660974054.089:74): avc: denied { prog_load } for pid=301 comm="syz-executor492" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 18.574367][ T301] kasan: CONFIG_KASAN_INLINE enabled [ 18.577160][ T22] audit: type=1400 audit(1660974054.099:75): avc: denied { prog_run } for pid=301 comm="syz-executor492" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 18.577788][ T301] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 18.581403][ T301] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 18.582405][ T301] CPU: 0 PID: 301 Comm: syz-executor492 Not tainted 5.4.197-syzkaller-00011-gf3c75e616e3f #0 [ 18.583828][ T301] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 18.585269][ T301] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x111/0x280 [ 18.586221][ T301] Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 90 14 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 [ 18.588944][ T301] RSP: 0018:ffff8881dde57908 EFLAGS: 00010203 [ 18.589752][ T301] RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 [ 18.590838][ T301] RDX: ffff8881dde22f40 RSI: 0000000000000080 RDI: 000000000000011c [ 18.591887][ T301] RBP: 0000000000000080 R08: ffffffff8362a777 R09: ffff8881dde57b70 [ 18.599825][ T301] R10: ffffed103bbcaf70 R11: 1ffff1103bbcaf6e R12: dffffc0000000000 [ 18.607763][ T301] R13: 0000000000000001 R14: 0000000000000100 R15: ffff8881de553812 [ 18.615788][ T301] FS: 00005555573d5300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 18.624783][ T301] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.631358][ T301] CR2: 0000563099257768 CR3: 00000001e2dae000 CR4: 00000000003406f0 [ 18.639297][ T301] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.647235][ T301] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.655170][ T301] Call Trace: [ 18.658432][ T301] ? ktime_get+0xfd/0x130 [ 18.662739][ T301] ? bpf_test_run+0x260/0x640 [ 18.667390][ T301] ? bpf_prog_test_run_skb+0x7a2/0xf00 [ 18.672830][ T301] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 18.678611][ T301] ? __se_sys_bpf+0x2b7b/0xb990 [ 18.683448][ T301] ? __schedule+0x8d3/0xfc0 [ 18.687916][ T301] ? cgroup_update_frozen+0x139/0x360 [ 18.693256][ T301] ? _raw_spin_lock_irq+0x6d/0x170 [ 18.698330][ T301] ? _raw_spin_lock_irq+0x6d/0x170 [ 18.703417][ T301] ? ptrace_stop+0x6eb/0xa30 [ 18.707977][ T301] ? syscall_trace_enter+0x5c2/0x860 [ 18.713239][ T301] ? check_preemption_disabled+0xde/0x2c0 [ 18.718926][ T301] ? do_syscall_64+0xcb/0x1c0 [ 18.723568][ T301] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 18.731073][ T301] Modules linked in: [ 18.735068][ T301] ---[ end trace 83943f01a0213164 ]--- [ 18.740526][ T301] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x111/0x280 [ 18.747039][ T301] Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 90 14 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 [ 18.766647][ T301] RSP: 0018:ffff8881dde57908 EFLAGS: 00010203 [ 18.772685][ T301] RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 [ 18.780651][ T301] RDX: ffff8881dde22f40 RSI: 0000000000000080 RDI: 000000000000011c [ 18.788625][ T301] RBP: 0000000000000080 R08: ffffffff8362a777 R09: ffff8881dde57b70 [ 18.796596][ T301] R10: ffffed103bbcaf70 R11: 1ffff1103bbcaf6e R12: dffffc0000000000 [ 18.804563][ T301] R13: 0000000000000001 R14: 0000000000000100 R15: ffff8881de553812 [ 18.812524][ T301] FS: 00005555573d5300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 18.821452][ T301] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.828034][ T301] CR2: 0000563099257768 CR3: 00000001e2dae000 CR4: 00000000003406f0 [ 18.836006][ T301] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.843979][ T301] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.851931][ T301] Kernel panic - not syncing: Fatal exception [ 18.858176][ T301] Kernel Offset: disabled [ 18.862476][ T301] Rebooting in 86400 seconds..