./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1421185610 <...> Warning: Permanently added '10.128.0.42' (ED25519) to the list of known hosts. execve("./syz-executor1421185610", ["./syz-executor1421185610"], 0x7ffe3ab25470 /* 10 vars */) = 0 brk(NULL) = 0x55555dcf0000 brk(0x55555dcf0d00) = 0x55555dcf0d00 arch_prctl(ARCH_SET_FS, 0x55555dcf0380) = 0 set_tid_address(0x55555dcf0650) = 341 set_robust_list(0x55555dcf0660, 24) = 0 rseq(0x55555dcf0ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1421185610", 4096) = 28 getrandom("\x44\xd6\x35\x3e\xe5\x7e\x0b\x23", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555dcf0d00 brk(0x55555dd11d00) = 0x55555dd11d00 brk(0x55555dd12000) = 0x55555dd12000 mprotect(0x7fdc86984000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 write(1, "executing program\n", 18executing program ) = 18 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SCHED_CLS, insn_cnt=4, insns=0x200000000700, 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, prog_btf_fd=0, func_info_rec_size=0, func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 148) = 3 [ 27.968131][ T23] audit: type=1400 audit(1746506241.980:81): avc: denied { execmem } for pid=341 comm="syz-executor142" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 27.991334][ T23] audit: type=1400 audit(1746506242.010:82): avc: denied { prog_load } for pid=341 comm="syz-executor142" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 28.010973][ T23] audit: type=1400 audit(1746506242.030:83): avc: denied { prog_run } for pid=341 comm="syz-executor142" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 28.011623][ T341] kasan: CONFIG_KASAN_INLINE enabled [ 28.035441][ T341] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.044228][ T341] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.051726][ T341] CPU: 1 PID: 341 Comm: syz-executor142 Not tainted 5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0 [ 28.063997][ T341] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 28.075004][ T341] RIP: 0010:bpf_skb_cgroup_id+0x118/0x1a0 [ 28.081061][ T341] Code: a0 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 38 44 26 fe 41 be 40 01 00 00 4c 03 33 4c 89 f0 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 f7 e8 19 44 26 fe 49 8b 1e 48 83 c3 68 [ 28.103747][ T341] RSP: 0018:ffff8881ee567b00 EFLAGS: 00010206 [ 28.109799][ T341] RAX: 0000000000000028 RBX: ffff8881e01272a0 RCX: ffff8881f31c9f80 [ 28.117752][ T341] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 28.125819][ T341] RBP: ffff8881ee567b18 R08: ffff8881ee567d20 R09: ffffed103dc99815 [ 28.133775][ T341] R10: ffffed103dc99815 R11: 1ffff1103dc99814 R12: dffffc0000000000 [ 28.141746][ T341] R13: ffffc90000036020 R14: 0000000000000140 R15: dffffc0000000000 [ 28.150173][ T341] FS: 000055555dcf0380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 28.160667][ T341] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.167623][ T341] CR2: 00002000000000c0 CR3: 00000001ef0a4000 CR4: 00000000003406a0 [ 28.175741][ T341] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.184023][ T341] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.191971][ T341] Call Trace: [ 28.195260][ T341] ? bpf_test_run+0x1ea/0x5d0 [ 28.200090][ T341] ? eth_type_trans+0x2c2/0x5e0 [ 28.205137][ T341] ? bpf_ctx_init+0x1b0/0x1b0 [ 28.209832][ T341] ? eth_get_headlen+0x1f0/0x1f0 [ 28.214853][ T341] ? __kasan_check_write+0x14/0x20 [ 28.219970][ T341] ? bpf_prog_test_run_skb+0x721/0xdc0 [ 28.225551][ T341] ? __bpf_trace_bpf_test_finish+0x30/0x30 [ 28.231514][ T341] ? bpf_prog_test_run+0x21a/0x2a0 [ 28.236604][ T341] ? __se_sys_bpf+0x49a/0x570 [ 28.241261][ T341] ? __x64_sys_bpf+0x90/0x90 [ 28.245830][ T341] ? do_syscall_64+0x170/0x170 [ 28.250581][ T341] ? __kasan_check_read+0x11/0x20 [ 28.256029][ T341] ? __x64_sys_bpf+0x7b/0x90 [ 28.260617][ T341] ? do_syscall_64+0xcf/0x170 [ 28.265278][ T341] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 28.271325][ T341] Modules linked in: [ 28.275492][ T341] ---[ end trace 135736d06d2d3b71 ]--- [ 28.281544][ T341] RIP: 0010:bpf_skb_cgroup_id+0x118/0x1a0 [ 28.287678][ T341] Code: a0 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 38 44 26 fe 41 be 40 01 00 00 4c 03 33 4c 89 f0 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 f7 e8 19 44 26 fe 49 8b 1e 48 83 c3 68 [ 28.312049][ T341] RSP: 0018:ffff8881ee567b00 EFLAGS: 00010206 [ 28.319168][ T341] RAX: 0000000000000028 RBX: ffff8881e01272a0 RCX: ffff8881f31c9f80 [ 28.329355][ T341] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 28.340775][ T341] RBP: ffff8881ee567b18 R08: ffff8881ee567d20 R09: ffffed103dc99815 [ 28.350660][ T341] R10: ffffed103dc99815 R11: 1ffff1103dc99814 R12: dffffc0000000000 [ 28.361747][ T341] R13: ffffc90000036020 R14: 0000000000000140 R15: dffffc0000000000 [ 28.373427][ T341] FS: 000055555dcf0380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 28.388146][ T341] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.396044][ T341] CR2: 00002000000000c0 CR3: 00000001ef0a4000 CR4: 00000000003406a0 [ 28.404851][ T341] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.414531][ T341] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.423711][ T341] Kernel panic - not syncing: Fatal exception [ 28.430560][ T341] Kernel Offset: disabled [ 28.435286][ T341] Rebooting in 86400 seconds..