./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor94203251 <...> Warning: Permanently added '10.128.0.13' (ECDSA) to the list of known hosts. execve("./syz-executor94203251", ["./syz-executor94203251"], 0x7ffe96b12e90 /* 10 vars */) = 0 brk(NULL) = 0x555557277000 brk(0x555557277c40) = 0x555557277c40 arch_prctl(ARCH_SET_FS, 0x555557277300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor94203251", 4096) = 26 brk(0x555557298c40) = 0x555557298c40 brk(0x555557299000) = 0x555557299000 mprotect(0x7ff9fca43000, 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 [ 21.678670][ T22] audit: type=1400 audit(1678324055.920:73): avc: denied { execmem } for pid=304 comm="syz-executor942" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.698499][ T304] kasan: CONFIG_KASAN_INLINE enabled [ 21.698624][ T22] audit: type=1400 audit(1678324055.930:74): avc: denied { prog_load } for pid=304 comm="syz-executor942" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 21.703969][ T304] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 21.723622][ T22] audit: type=1400 audit(1678324055.940:75): avc: denied { prog_run } for pid=304 comm="syz-executor942" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 21.731098][ T304] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 21.757079][ T304] CPU: 1 PID: 304 Comm: syz-executor942 Not tainted 5.4.225-syzkaller-00007-g250ac66f1853 #0 [ 21.767816][ T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 21.777859][ T304] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x114/0x270 [ 21.784341][ T304] Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 8d 64 1d fe 48 8b 1b 48 8d bb 1c 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 2f 01 00 00 8b ab 1c 01 00 00 89 ef 44 [ 21.803921][ T304] RSP: 0018:ffff8881dd54f4b8 EFLAGS: 00010203 [ 21.809971][ T304] RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 [ 21.818014][ T304] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000000011c [ 21.825972][ T304] RBP: 0000000000000080 R08: ffffffff8373538a R09: ffff8881dd54f760 [ 21.834028][ T304] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 21.842086][ T304] R13: fffffffaf3e259cf R14: 0000000000000000 R15: ffff8881dd552012 [ 21.850038][ T304] FS: 0000555557277300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 21.858955][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.865529][ T304] CR2: 000000000064a110 CR3: 00000001ddefb000 CR4: 00000000003406e0 [ 21.873483][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.881611][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.889593][ T304] Call Trace: [ 21.892883][ T304] ? __kasan_kmalloc+0x130/0x1d0 [ 21.897799][ T304] ? kmem_cache_alloc+0xd0/0x220 [ 21.902734][ T304] ? build_skb+0x26/0x440 [ 21.907045][ T304] ? bpf_prog_test_run_skb+0x302/0xf00 [ 21.912481][ T304] ? __se_sys_bpf+0x2b6f/0xb870 [ 21.917309][ T304] ? do_syscall_64+0xca/0x1c0 [ 21.921962][ T304] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 21.928010][ T304] ? ktime_get+0xf9/0x130 [ 21.932339][ T304] ? bpf_test_run+0x2ae/0x680 [ 21.936996][ T304] ? bpf_ctx_init+0x1a0/0x1a0 [ 21.941650][ T304] ? bpf_prog_test_run_skb+0x75e/0xf00 [ 21.947090][ T304] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 21.952871][ T304] ? __bpf_prog_get+0x287/0x310 [ 21.957706][ T304] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 21.963489][ T304] ? __se_sys_bpf+0x2b6f/0xb870 [ 21.968317][ T304] ? check_preemption_disabled+0x9f/0x320 [ 21.974048][ T304] ? debug_smp_processor_id+0x20/0x20 [ 21.979409][ T304] ? check_preemption_disabled+0x9f/0x320 [ 21.985105][ T304] ? check_preemption_disabled+0x9f/0x320 [ 21.990799][ T304] ? debug_smp_processor_id+0x20/0x20 [ 21.996148][ T304] ? debug_smp_processor_id+0x20/0x20 [ 22.001494][ T304] ? __x64_sys_bpf+0x80/0x80 [ 22.007469][ T304] ? switch_mm_irqs_off+0x632/0x9b0 [ 22.012661][ T304] ? _raw_spin_unlock_irq+0x4a/0x60 [ 22.017925][ T304] ? finish_task_switch+0x127/0x560 [ 22.023100][ T304] ? __schedule+0xb03/0x12a0 [ 22.027671][ T304] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 22.032774][ T304] ? _raw_spin_lock_irqsave+0x210/0x210 [ 22.038297][ T304] ? cgroup_update_frozen+0x157/0xab0 [ 22.043645][ T304] ? cgroup_update_frozen+0x157/0xab0 [ 22.048995][ T304] ? cgroup_leave_frozen+0x13c/0x290 [ 22.054257][ T304] ? ptrace_stop+0x6ee/0xa30 [ 22.058841][ T304] ? _raw_spin_unlock_irq+0x4a/0x60 [ 22.064015][ T304] ? ptrace_notify+0x24c/0x350 [ 22.068760][ T304] ? do_notify_parent+0xa10/0xa10 [ 22.073780][ T304] ? check_preemption_disabled+0x153/0x320 [ 22.079562][ T304] ? syscall_trace_enter+0x650/0x940 [ 22.084858][ T304] ? do_syscall_64+0xca/0x1c0 [ 22.089513][ T304] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 22.095559][ T304] Modules linked in: [ 22.099500][ T304] ---[ end trace affcbe8bc07fe138 ]--- [ 22.104986][ T304] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x114/0x270 [ 22.111479][ T304] Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 8d 64 1d fe 48 8b 1b 48 8d bb 1c 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 2f 01 00 00 8b ab 1c 01 00 00 89 ef 44 [ 22.131088][ T304] RSP: 0018:ffff8881dd54f4b8 EFLAGS: 00010203 [ 22.137164][ T304] RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 [ 22.145159][ T304] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000000011c [ 22.153136][ T304] RBP: 0000000000000080 R08: ffffffff8373538a R09: ffff8881dd54f760 [ 22.161093][ T304] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 22.169073][ T304] R13: fffffffaf3e259cf R14: 0000000000000000 R15: ffff8881dd552012 [ 22.177063][ T304] FS: 0000555557277300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 22.185998][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.192593][ T304] CR2: 000000000064a110 CR3: 00000001ddefb000 CR4: 00000000003406e0 [ 22.200646][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.208638][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.216624][ T304] Kernel panic - not syncing: Fatal exception [ 22.222954][ T304] Kernel Offset: disabled [ 22.227264][ T304] Rebooting in 86400 seconds..