./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor242134433 <...> 1 [ 17.100433][ T23] audit: type=1400 audit(1746485322.620:79): avc: denied { siginh } for pid=281 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 18.207738][ T23] audit: type=1400 audit(1746485323.800:80): avc: denied { read } for pid=146 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1 Warning: Permanently added '10.128.1.24' (ED25519) to the list of known hosts. execve("./syz-executor242134433", ["./syz-executor242134433"], 0x7ffc0f393b30 /* 10 vars */) = 0 brk(NULL) = 0x5555647bf000 brk(0x5555647bfd00) = 0x5555647bfd00 arch_prctl(ARCH_SET_FS, 0x5555647bf380) = 0 set_tid_address(0x5555647bf650) = 341 set_robust_list(0x5555647bf660, 24) = 0 rseq(0x5555647bfca0, 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-executor242134433", 4096) = 27 getrandom("\x29\x77\xc9\xbf\xf2\x71\x49\xa2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555647bfd00 brk(0x5555647e0d00) = 0x5555647e0d00 brk(0x5555647e1000) = 0x5555647e1000 mprotect(0x7f4eef206000, 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, 0executing program ) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 write(1, "executing program\n", 18) = 18 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SCHED_ACT, insn_cnt=14, insns=0x2000000014c0, 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 [ 26.971234][ T23] audit: type=1400 audit(1746485332.570:81): avc: denied { execmem } for pid=341 comm="syz-executor242" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 26.993088][ T23] audit: type=1400 audit(1746485332.590:82): avc: denied { prog_load } for pid=341 comm="syz-executor242" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 26.993828][ T341] kasan: CONFIG_KASAN_INLINE enabled [ 27.013279][ T23] audit: type=1400 audit(1746485332.590:83): avc: denied { prog_run } for pid=341 comm="syz-executor242" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 27.018773][ T341] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.049637][ T341] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 27.058242][ T341] CPU: 0 PID: 341 Comm: syz-executor242 Not tainted 5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0 [ 27.070271][ T341] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 27.081994][ T341] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x11d/0x280 [ 27.088503][ T341] Code: 02 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 94 42 26 fe 4d 8b 36 49 8d be 1c 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 3b 01 00 00 45 8b be 1c 01 00 00 44 89 [ 27.110417][ T341] RSP: 0018:ffff8881d9af7978 EFLAGS: 00010203 [ 27.117444][ T341] RAX: 0000000000000023 RBX: fffffffffffffe00 RCX: 0000000000000000 [ 27.125933][ T341] RDX: ffff8881def10fc0 RSI: 0000000000000080 RDI: 000000000000011c [ 27.134686][ T341] RBP: ffff8881d9af7998 R08: 0000000000000040 R09: ffffed103e04cd21 [ 27.143321][ T341] R10: ffffed103e04cd21 R11: 1ffff1103e04cd1e R12: dffffc0000000000 [ 27.151986][ T341] R13: ffffc90000036020 R14: 0000000000000000 R15: 0000000000000080 [ 27.160621][ T341] FS: 00005555647bf380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 27.172171][ T341] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.179644][ T341] CR2: 0000564227aa0000 CR3: 00000001de73a000 CR4: 00000000003406b0 [ 27.188926][ T341] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.197172][ T341] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.205317][ T341] Call Trace: [ 27.208922][ T341] ? trace_event_raw_event_xdp_bulk_tx+0x1f0/0x350 [ 27.215547][ T341] ? __x64_sys_bpf+0x7b/0x90 [ 27.220622][ T341] ? do_syscall_64+0xcf/0x170 [ 27.225320][ T341] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 27.232186][ T341] ? ktime_get+0x10d/0x140 [ 27.236945][ T341] ? bpf_test_run+0x1ea/0x5d0 [ 27.243142][ T341] ? eth_type_trans+0x2c2/0x5e0 [ 27.249343][ T341] ? bpf_ctx_init+0x1b0/0x1b0 [ 27.254016][ T341] ? eth_get_headlen+0x1f0/0x1f0 [ 27.259738][ T341] ? __kasan_check_write+0x14/0x20 [ 27.265584][ T341] ? bpf_prog_test_run_skb+0x721/0xdc0 [ 27.272589][ T341] ? __bpf_trace_bpf_test_finish+0x30/0x30 [ 27.279226][ T341] ? bpf_prog_test_run+0x21a/0x2a0 [ 27.284797][ T341] ? __se_sys_bpf+0x49a/0x570 [ 27.289743][ T341] ? __x64_sys_bpf+0x90/0x90 [ 27.294901][ T341] ? do_syscall_64+0x170/0x170 [ 27.300233][ T341] ? __kasan_check_read+0x11/0x20 [ 27.305541][ T341] ? __x64_sys_bpf+0x7b/0x90 [ 27.310422][ T341] ? do_syscall_64+0xcf/0x170 [ 27.315298][ T341] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 27.321653][ T341] Modules linked in: [ 27.325741][ T341] ---[ end trace 4b6632d6bae19f05 ]--- [ 27.331879][ T341] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x11d/0x280 [ 27.338644][ T341] Code: 02 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 94 42 26 fe 4d 8b 36 49 8d be 1c 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 3b 01 00 00 45 8b be 1c 01 00 00 44 89 [ 27.359695][ T341] RSP: 0018:ffff8881d9af7978 EFLAGS: 00010203 [ 27.366898][ T341] RAX: 0000000000000023 RBX: fffffffffffffe00 RCX: 0000000000000000 [ 27.376140][ T341] RDX: ffff8881def10fc0 RSI: 0000000000000080 RDI: 000000000000011c [ 27.384661][ T341] RBP: ffff8881d9af7998 R08: 0000000000000040 R09: ffffed103e04cd21 [ 27.392989][ T341] R10: ffffed103e04cd21 R11: 1ffff1103e04cd1e R12: dffffc0000000000 [ 27.401125][ T341] R13: ffffc90000036020 R14: 0000000000000000 R15: 0000000000000080 [ 27.410196][ T341] FS: 00005555647bf380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 27.419812][ T341] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.427273][ T341] CR2: 0000564227aa0000 CR3: 00000001de73a000 CR4: 00000000003406b0 [ 27.436253][ T341] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.444618][ T341] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.453232][ T341] Kernel panic - not syncing: Fatal exception [ 27.460751][ T341] Kernel Offset: disabled [ 27.465629][ T341] Rebooting in 86400 seconds..