./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor771662630 <...> Warning: Permanently added '10.128.0.64' (ECDSA) to the list of known hosts. execve("./syz-executor771662630", ["./syz-executor771662630"], 0x7ffea3bd2e20 /* 10 vars */) = 0 brk(NULL) = 0x555556a9c000 brk(0x555556a9cc40) = 0x555556a9cc40 arch_prctl(ARCH_SET_FS, 0x555556a9c300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor771662630", 4096) = 27 brk(0x555556abdc40) = 0x555556abdc40 brk(0x555556abe000) = 0x555556abe000 mprotect(0x7f897a0c4000, 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 [ 20.683748][ T23] audit: type=1400 audit(1669759362.339:73): avc: denied { execmem } for pid=304 comm="syz-executor771" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 20.704488][ T23] audit: type=1400 audit(1669759362.359:74): avc: denied { prog_load } for pid=304 comm="syz-executor771" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SCHED_CLS, insn_cnt=3, insns=0x20001fd8, license="", log_level=5, log_size=1159, log_buf="", kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS}, 72) = 3 [ 20.724064][ T23] audit: type=1400 audit(1669759362.379:75): avc: denied { prog_run } for pid=304 comm="syz-executor771" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 20.724258][ T304] kasan: CONFIG_KASAN_INLINE enabled [ 20.748443][ T304] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 20.756502][ T304] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 20.763417][ T304] CPU: 0 PID: 304 Comm: syz-executor771 Not tainted 5.4.210-syzkaller-00013-gdf2b5549c0ec #0 [ 20.773528][ T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 20.788703][ T304] RIP: 0010:bpf_skb_cgroup_id+0x10c/0x190 [ 20.794398][ T304] Code: c7 a0 02 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 c3 58 14 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 a5 58 14 fe 48 8b 1b 48 83 c3 68 [ 20.813977][ T304] RSP: 0018:ffff8881dcc3f640 EFLAGS: 00010206 [ 20.820011][ T304] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881dd7ccec0 [ 20.827952][ T304] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 20.835894][ T304] RBP: ffff8881dcc3f690 R08: ffffffff837f4ab3 R09: ffff8881dcc3f760 [ 20.843835][ T304] R10: ffffed103b987eee R11: 1ffff1103b987eec R12: dffffc0000000000 [ 20.851779][ T304] R13: fffffffb2de0a17e R14: ffff8881dcc76812 R15: ffff8881dcc76aa0 [ 20.859718][ T304] FS: 0000555556a9c300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 20.868615][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.875165][ T304] CR2: 000000002000d000 CR3: 00000001dd36e000 CR4: 00000000003406f0 [ 20.883108][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.891059][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.899004][ T304] Call Trace: [ 20.902277][ T304] ? bpf_test_run+0x2b4/0x6a0 [ 20.906924][ T304] ? bpf_ctx_init+0x1b0/0x1b0 [ 20.911570][ T304] ? build_skb+0x24c/0x450 [ 20.915957][ T304] ? bpf_prog_test_run_skb+0x842/0xf80 [ 20.921385][ T304] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 20.927160][ T304] ? __fdget+0x14f/0x200 [ 20.931373][ T304] ? bpf_prog_get+0x183/0x1b0 [ 20.936017][ T304] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 20.941889][ T304] ? __se_sys_bpf+0x2bbc/0xbba0 [ 20.946709][ T304] ? check_preemption_disabled+0x9e/0x330 [ 20.952394][ T304] ? rcu_softirq_qs+0x90/0x90 [ 20.957039][ T304] ? debug_smp_processor_id+0x20/0x20 [ 20.962379][ T304] ? check_preemption_disabled+0x9e/0x330 [ 20.968063][ T304] ? check_preemption_disabled+0x9e/0x330 [ 20.973748][ T304] ? debug_smp_processor_id+0x20/0x20 [ 20.979088][ T304] ? switch_mm_irqs_off+0x542/0x960 [ 20.984255][ T304] ? debug_smp_processor_id+0x20/0x20 [ 20.989609][ T304] ? __x64_sys_bpf+0x80/0x80 [ 20.994165][ T304] ? switch_mm+0x100/0x100 [ 20.998549][ T304] ? _raw_spin_unlock_irq+0x4a/0x60 [ 21.003719][ T304] ? finish_task_switch+0x130/0x560 [ 21.008885][ T304] ? __schedule+0x98e/0x1050 [ 21.013877][ T304] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 21.018954][ T304] ? _raw_spin_lock_irqsave+0x210/0x210 [ 21.024464][ T304] ? cgroup_update_frozen+0x139/0x360 [ 21.029805][ T304] ? cgroup_update_frozen+0x139/0x360 [ 21.035143][ T304] ? cgroup_leave_frozen+0x13b/0x290 [ 21.040397][ T304] ? ptrace_stop+0x6eb/0xa30 [ 21.044955][ T304] ? _raw_spin_unlock_irq+0x4a/0x60 [ 21.050117][ T304] ? ptrace_notify+0x248/0x340 [ 21.054855][ T304] ? do_notify_parent+0xa40/0xa40 [ 21.059854][ T304] ? check_preemption_disabled+0x154/0x330 [ 21.065628][ T304] ? syscall_trace_enter+0x652/0x940 [ 21.070882][ T304] ? switch_fpu_return+0x10/0x10 [ 21.075786][ T304] ? do_syscall_64+0xcb/0x1c0 [ 21.080437][ T304] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 21.086465][ T304] Modules linked in: [ 21.090378][ T304] ---[ end trace 5d592dcb63f415ed ]--- [ 21.095837][ T304] RIP: 0010:bpf_skb_cgroup_id+0x10c/0x190 [ 21.101526][ T304] Code: c7 a0 02 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 c3 58 14 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 a5 58 14 fe 48 8b 1b 48 83 c3 68 [ 21.121123][ T304] RSP: 0018:ffff8881dcc3f640 EFLAGS: 00010206 [ 21.127181][ T304] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881dd7ccec0 [ 21.135141][ T304] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 21.143092][ T304] RBP: ffff8881dcc3f690 R08: ffffffff837f4ab3 R09: ffff8881dcc3f760 [ 21.151063][ T304] R10: ffffed103b987eee R11: 1ffff1103b987eec R12: dffffc0000000000 [ 21.159024][ T304] R13: fffffffb2de0a17e R14: ffff8881dcc76812 R15: ffff8881dcc76aa0 [ 21.166999][ T304] FS: 0000555556a9c300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 21.175917][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.182468][ T304] CR2: 000000002000d000 CR3: 00000001dd36e000 CR4: 00000000003406f0 [ 21.190442][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.198406][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.206371][ T304] Kernel panic - not syncing: Fatal exception [ 21.212586][ T304] Kernel Offset: disabled [ 21.216899][ T304] Rebooting in 86400 seconds..