./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3749785160 <...> Warning: Permanently added '10.128.1.70' (ECDSA) to the list of known hosts. execve("./syz-executor3749785160", ["./syz-executor3749785160"], 0x7ffc847a8850 /* 10 vars */) = 0 brk(NULL) = 0x555556270000 brk(0x555556270c40) = 0x555556270c40 arch_prctl(ARCH_SET_FS, 0x555556270300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3749785160", 4096) = 28 brk(0x555556291c40) = 0x555556291c40 brk(0x555556292000) = 0x555556292000 mprotect(0x7fdf4b66c000, 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 [ 61.832695][ T22] audit: type=1400 audit(1678577275.330:73): avc: denied { execmem } for pid=304 comm="syz-executor374" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 61.853532][ T22] audit: type=1400 audit(1678577275.350:74): avc: denied { prog_load } for pid=304 comm="syz-executor374" 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_CGROUP_SKB, insn_cnt=3, insns=0x20000dc0, license="GPL", 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 [ 61.873099][ T22] audit: type=1400 audit(1678577275.380:75): avc: denied { prog_run } for pid=304 comm="syz-executor374" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 61.886882][ T304] kasan: CONFIG_KASAN_INLINE enabled [ 61.897476][ T304] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 61.905511][ T304] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 61.912511][ T304] CPU: 1 PID: 304 Comm: syz-executor374 Not tainted 5.4.225-syzkaller-00007-g250ac66f1853 #0 [ 61.922621][ T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 61.932657][ T304] RIP: 0010:bpf_skb_cgroup_id+0x10f/0x190 [ 61.938342][ 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 20 66 1d 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 02 66 1d fe 48 8b 1b 48 83 c3 68 [ 61.957914][ T304] RSP: 0018:ffff8881ddb57640 EFLAGS: 00010206 [ 61.963961][ T304] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881ddb3de80 [ 61.971908][ T304] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 61.979869][ T304] RBP: ffff8881ddb57690 R08: ffffffff837351f6 R09: ffff8881ddb57760 [ 61.987818][ T304] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 61.995783][ T304] R13: fffffff198635db8 R14: ffff8881ddb4f812 R15: ffff8881ddb4faa0 [ 62.003730][ T304] FS: 0000555556270300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 62.012632][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.019189][ T304] CR2: 0000000020282000 CR3: 00000001e2959000 CR4: 00000000003406e0 [ 62.027160][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.035101][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.043051][ T304] Call Trace: [ 62.046330][ T304] ? bpf_test_run+0x2ae/0x680 [ 62.050988][ T304] ? bpf_ctx_init+0x1a0/0x1a0 [ 62.055638][ T304] ? build_skb+0x259/0x440 [ 62.060024][ T304] ? bpf_prog_test_run_skb+0x75e/0xf00 [ 62.065458][ T304] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 62.071244][ T304] ? __bpf_prog_get+0x287/0x310 [ 62.076068][ T304] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 62.081861][ T304] ? __se_sys_bpf+0x2b6f/0xb870 [ 62.086688][ T304] ? check_preemption_disabled+0x9f/0x320 [ 62.092380][ T304] ? debug_smp_processor_id+0x20/0x20 [ 62.097721][ T304] ? check_preemption_disabled+0x9f/0x320 [ 62.103413][ T304] ? check_preemption_disabled+0x9f/0x320 [ 62.109111][ T304] ? debug_smp_processor_id+0x20/0x20 [ 62.114463][ T304] ? debug_smp_processor_id+0x20/0x20 [ 62.119801][ T304] ? __x64_sys_bpf+0x80/0x80 [ 62.124362][ T304] ? switch_mm_irqs_off+0x632/0x9b0 [ 62.129533][ T304] ? _raw_spin_unlock_irq+0x4a/0x60 [ 62.134700][ T304] ? finish_task_switch+0x127/0x560 [ 62.139868][ T304] ? __schedule+0xb03/0x12a0 [ 62.144432][ T304] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 62.149516][ T304] ? _raw_spin_lock_irqsave+0x210/0x210 [ 62.155032][ T304] ? cgroup_update_frozen+0x157/0xab0 [ 62.160372][ T304] ? cgroup_update_frozen+0x157/0xab0 [ 62.165730][ T304] ? cgroup_leave_frozen+0x13c/0x290 [ 62.170990][ T304] ? ptrace_stop+0x6ee/0xa30 [ 62.175556][ T304] ? _raw_spin_unlock_irq+0x4a/0x60 [ 62.180736][ T304] ? ptrace_notify+0x24c/0x350 [ 62.185477][ T304] ? do_notify_parent+0xa10/0xa10 [ 62.190475][ T304] ? check_preemption_disabled+0x153/0x320 [ 62.196255][ T304] ? syscall_trace_enter+0x650/0x940 [ 62.201516][ T304] ? do_syscall_64+0xca/0x1c0 [ 62.206168][ T304] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 62.212207][ T304] Modules linked in: [ 62.216114][ T304] ---[ end trace cdaf6a72b111a18c ]--- [ 62.221579][ T304] RIP: 0010:bpf_skb_cgroup_id+0x10f/0x190 [ 62.227295][ 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 20 66 1d 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 02 66 1d fe 48 8b 1b 48 83 c3 68 [ 62.246896][ T304] RSP: 0018:ffff8881ddb57640 EFLAGS: 00010206 [ 62.252935][ T304] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881ddb3de80 [ 62.260906][ T304] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 62.268914][ T304] RBP: ffff8881ddb57690 R08: ffffffff837351f6 R09: ffff8881ddb57760 [ 62.276897][ T304] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 62.284867][ T304] R13: fffffff198635db8 R14: ffff8881ddb4f812 R15: ffff8881ddb4faa0 [ 62.292843][ T304] FS: 0000555556270300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 62.301775][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.308366][ T304] CR2: 0000000020282000 CR3: 00000001e2959000 CR4: 00000000003406e0 [ 62.316329][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.324322][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.332290][ T304] Kernel panic - not syncing: Fatal exception [ 62.338410][ T304] Kernel Offset: disabled [ 62.342715][ T304] Rebooting in 86400 seconds..