./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1409061042 <...> Warning: Permanently added '10.128.0.133' (ED25519) to the list of known hosts. execve("./syz-executor1409061042", ["./syz-executor1409061042"], 0x7ffcf9871180 /* 10 vars */) = 0 brk(NULL) = 0x555555e88000 brk(0x555555e88d00) = 0x555555e88d00 arch_prctl(ARCH_SET_FS, 0x555555e88380) = 0 set_tid_address(0x555555e88650) = 356 set_robust_list(0x555555e88660, 24) = 0 rseq(0x555555e88ca0, 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-executor1409061042", 4096) = 28 getrandom("\xce\x33\x89\x5f\x0c\xa2\x22\x57", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555e88d00 brk(0x555555ea9d00) = 0x555555ea9d00 brk(0x555555eaa000) = 0x555555eaa000 mprotect(0x7fefc43cc000, 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_CLS, insn_cnt=4, insns=0x20000180, 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_XDP, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 128) = 3 [ 22.534382][ T23] audit: type=1400 audit(1704905853.399:66): avc: denied { execmem } for pid=356 comm="syz-executor140" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.553637][ T23] audit: type=1400 audit(1704905853.409:67): avc: denied { prog_load } for pid=356 comm="syz-executor140" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 22.554209][ T356] kasan: CONFIG_KASAN_INLINE enabled [ 22.573098][ T23] audit: type=1400 audit(1704905853.419:68): avc: denied { prog_run } for pid=356 comm="syz-executor140" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 22.577867][ T356] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 22.604667][ T356] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 22.611434][ T356] CPU: 0 PID: 356 Comm: syz-executor140 Not tainted 5.4.259-syzkaller #0 [ 22.619675][ T356] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 22.629579][ T356] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x114/0x270 [ 22.635907][ T356] Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 2d 57 0c 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 [ 22.655348][ T356] RSP: 0018:ffff8881dc8e7638 EFLAGS: 00010203 [ 22.661249][ T356] RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 [ 22.669061][ T356] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000000011c [ 22.676873][ T356] RBP: 0000000000000080 R08: ffffffff8387be1a R09: ffff8881dc8e7760 [ 22.684689][ T356] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 22.692494][ T356] R13: fffffffac09f93a8 R14: 0000000003430000 R15: ffff8881dc91b012 [ 22.700309][ T356] FS: 0000555555e88380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 22.709070][ T356] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.715493][ T356] CR2: 00007f1f2f291b10 CR3: 00000001dcef2000 CR4: 00000000003406b0 [ 22.723306][ T356] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.731116][ T356] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.738925][ T356] Call Trace: [ 22.742060][ T356] ? __die+0xb4/0x100 [ 22.745873][ T356] ? die+0x26/0x50 [ 22.749439][ T356] ? do_general_protection+0x266/0x3c0 [ 22.754727][ T356] ? do_trap+0x340/0x340 [ 22.758805][ T356] ? __kasan_kmalloc+0x1d9/0x210 [ 22.763588][ T356] ? kmem_cache_alloc+0xd9/0x250 [ 22.768349][ T356] ? build_skb+0x26/0x440 [ 22.772518][ T356] ? bpf_prog_test_run_skb+0x302/0xf00 [ 22.777813][ T356] ? __se_sys_bpf+0x2e37/0xbcb0 [ 22.782497][ T356] ? do_syscall_64+0xca/0x1c0 [ 22.787011][ T356] ? general_protection+0x28/0x30 [ 22.791874][ T356] ? bpf_skb_ancestor_cgroup_id+0xda/0x270 [ 22.797514][ T356] ? bpf_skb_ancestor_cgroup_id+0x114/0x270 [ 22.803240][ T356] ? bpf_skb_ancestor_cgroup_id+0xda/0x270 [ 22.808885][ T356] ? bpf_test_run+0x2ae/0x6c0 [ 22.813396][ T356] ? bpf_ctx_init+0x1a0/0x1a0 [ 22.817911][ T356] ? build_skb+0x259/0x440 [ 22.822164][ T356] ? bpf_prog_test_run_skb+0x73c/0xf00 [ 22.827460][ T356] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 22.833098][ T356] ? __bpf_prog_get+0x287/0x310 [ 22.837786][ T356] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 22.843426][ T356] ? __se_sys_bpf+0x2e37/0xbcb0 [ 22.848114][ T356] ? check_preemption_disabled+0x9f/0x320 [ 22.853669][ T356] ? debug_smp_processor_id+0x20/0x20 [ 22.858875][ T356] ? check_preemption_disabled+0x9f/0x320 [ 22.864434][ T356] ? check_preemption_disabled+0x9f/0x320 [ 22.869986][ T356] ? debug_smp_processor_id+0x20/0x20 [ 22.875191][ T356] ? debug_smp_processor_id+0x20/0x20 [ 22.880403][ T356] ? __x64_sys_bpf+0x80/0x80 [ 22.884826][ T356] ? switch_mm_irqs_off+0x6b5/0xab0 [ 22.889875][ T356] ? _raw_spin_unlock_irq+0x4a/0x60 [ 22.894894][ T356] ? finish_task_switch+0x130/0x590 [ 22.899930][ T356] ? __schedule+0xb0d/0x1320 [ 22.904355][ T356] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 22.909301][ T356] ? _raw_spin_lock_irqsave+0x210/0x210 [ 22.914681][ T356] ? cgroup_update_frozen+0x157/0xab0 [ 22.919893][ T356] ? cgroup_update_frozen+0x157/0xab0 [ 22.925098][ T356] ? cgroup_leave_frozen+0x13c/0x290 [ 22.930222][ T356] ? ptrace_stop+0x6ee/0xa30 [ 22.934651][ T356] ? _raw_spin_unlock_irq+0x4a/0x60 [ 22.939679][ T356] ? ptrace_notify+0x24c/0x350 [ 22.944277][ T356] ? do_notify_parent+0xa10/0xa10 [ 22.949141][ T356] ? check_preemption_disabled+0x153/0x320 [ 22.954782][ T356] ? syscall_trace_enter+0x650/0x940 [ 22.959904][ T356] ? do_syscall_64+0xca/0x1c0 [ 22.964412][ T356] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 22.970315][ T356] Modules linked in: [ 22.974095][ T356] ---[ end trace bdba70f35e7e21d0 ]--- [ 22.979384][ T356] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x114/0x270 [ 22.985686][ T356] Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 2d 57 0c 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 [ 23.005141][ T356] RSP: 0018:ffff8881dc8e7638 EFLAGS: 00010203 [ 23.011047][ T356] RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 [ 23.018856][ T356] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000000011c [ 23.026667][ T356] RBP: 0000000000000080 R08: ffffffff8387be1a R09: ffff8881dc8e7760 [ 23.034456][ T356] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 23.042315][ T356] R13: fffffffac09f93a8 R14: 0000000003430000 R15: ffff8881dc91b012 [ 23.050100][ T356] FS: 0000555555e88380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 23.058870][ T356] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.065268][ T356] CR2: 00007f1f2f291b10 CR3: 00000001dcef2000 CR4: 00000000003406b0 [ 23.073119][ T356] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.080905][ T356] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.088725][ T356] Kernel panic - not syncing: Fatal exception [ 23.094762][ T356] Kernel Offset: disabled [ 23.098880][ T356] Rebooting in 86400 seconds..