./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor575937996 <...> Warning: Permanently added '10.128.0.106' (ECDSA) to the list of known hosts. execve("./syz-executor575937996", ["./syz-executor575937996"], 0x7fff580828a0 /* 10 vars */) = 0 brk(NULL) = 0x555555f95000 brk(0x555555f95c40) = 0x555555f95c40 arch_prctl(ARCH_SET_FS, 0x555555f95300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor575937996", 4096) = 27 brk(0x555555fb6c40) = 0x555555fb6c40 brk(0x555555fb7000) = 0x555555fb7000 mprotect(0x7febc960d000, 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=0x20001a40, 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 [ 21.465981][ T23] audit: type=1400 audit(1687135978.219:66): avc: denied { execmem } for pid=355 comm="syz-executor575" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.470622][ T23] audit: type=1400 audit(1687135978.219:67): avc: denied { prog_load } for pid=355 comm="syz-executor575" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 21.473850][ T23] audit: type=1400 audit(1687135978.229:68): avc: denied { prog_run } for pid=355 comm="syz-executor575" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 21.477022][ T355] kasan: CONFIG_KASAN_INLINE enabled [ 21.477843][ T355] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 21.479038][ T355] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 21.479945][ T355] CPU: 1 PID: 355 Comm: syz-executor575 Not tainted 5.4.242-syzkaller-00010-g39a9b92e9828 #0 [ 21.481250][ T355] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 21.482672][ T355] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x114/0x270 [ 21.483556][ T355] Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 8d e5 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 [ 21.486497][ T355] RSP: 0018:ffff8881dc0af4b8 EFLAGS: 00010203 [ 21.492346][ T355] RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 [ 21.500241][ T355] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000000011c [ 21.508065][ T355] RBP: 0000000000000080 R08: ffffffff8386fe5a R09: ffff8881dc0af760 [ 21.515866][ T355] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 21.523674][ T355] R13: fffffffb00df4e2e R14: 0000000000000000 R15: ffff8881dc0b2812 [ 21.531495][ T355] FS: 0000555555f95300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 21.540349][ T355] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.546761][ T355] CR2: 00007febc95e8a38 CR3: 00000001dc792000 CR4: 00000000003406a0 [ 21.554574][ T355] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.562385][ T355] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.570196][ T355] Call Trace: [ 21.573340][ T355] ? __kasan_kmalloc+0x171/0x210 [ 21.578095][ T355] ? kmem_cache_alloc+0xd9/0x250 [ 21.582867][ T355] ? build_skb+0x26/0x440 [ 21.587038][ T355] ? bpf_prog_test_run_skb+0x302/0xf00 [ 21.592331][ T355] ? __se_sys_bpf+0x2e37/0xbcb0 [ 21.597033][ T355] ? do_syscall_64+0xca/0x1c0 [ 21.601528][ T355] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 21.607437][ T355] ? ktime_get+0xf9/0x130 [ 21.611596][ T355] ? bpf_test_run+0x2ae/0x6c0 [ 21.616111][ T355] ? bpf_ctx_init+0x1a0/0x1a0 [ 21.620624][ T355] ? bpf_prog_test_run_skb+0x73c/0xf00 [ 21.625927][ T355] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 21.631561][ T355] ? __bpf_prog_get+0x287/0x310 [ 21.636255][ T355] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 21.641886][ T355] ? __se_sys_bpf+0x2e37/0xbcb0 [ 21.646576][ T355] ? _raw_spin_trylock_bh+0x190/0x190 [ 21.651786][ T355] ? newidle_balance+0x761/0x930 [ 21.656555][ T355] ? check_preemption_disabled+0x9f/0x320 [ 21.662108][ T355] ? check_preemption_disabled+0x9f/0x320 [ 21.667670][ T355] ? debug_smp_processor_id+0x20/0x20 [ 21.672882][ T355] ? debug_smp_processor_id+0x20/0x20 [ 21.678080][ T355] ? __x64_sys_bpf+0x80/0x80 [ 21.682509][ T355] ? find_next_bit+0x7b/0x100 [ 21.687036][ T355] ? finish_task_switch+0x1bb/0x590 [ 21.692063][ T355] ? __schedule+0xb0d/0x1320 [ 21.696480][ T355] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 21.701424][ T355] ? _raw_spin_lock_irqsave+0x210/0x210 [ 21.706810][ T355] ? cgroup_update_frozen+0x157/0xab0 [ 21.712012][ T355] ? cgroup_update_frozen+0x157/0xab0 [ 21.717222][ T355] ? cgroup_leave_frozen+0x13c/0x290 [ 21.722361][ T355] ? ptrace_stop+0x6ee/0xa30 [ 21.726795][ T355] ? _raw_spin_unlock_irq+0x4a/0x60 [ 21.731805][ T355] ? ptrace_notify+0x24c/0x350 [ 21.736406][ T355] ? do_notify_parent+0xa10/0xa10 [ 21.741265][ T355] ? check_preemption_disabled+0x153/0x320 [ 21.746932][ T355] ? syscall_trace_enter+0x650/0x940 [ 21.752035][ T355] ? do_syscall_64+0xca/0x1c0 [ 21.756652][ T355] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 21.762526][ T355] Modules linked in: [ 21.766379][ T355] ---[ end trace 3ce8b9116be2eb2c ]--- [ 21.771562][ T355] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x114/0x270 [ 21.777924][ T355] Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 8d e5 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 [ 21.797355][ T355] RSP: 0018:ffff8881dc0af4b8 EFLAGS: 00010203 [ 21.803257][ T355] RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 [ 21.811072][ T355] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000000011c [ 21.818897][ T355] RBP: 0000000000000080 R08: ffffffff8386fe5a R09: ffff8881dc0af760 [ 21.826692][ T355] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 21.834587][ T355] R13: fffffffb00df4e2e R14: 0000000000000000 R15: ffff8881dc0b2812 [ 21.842401][ T355] FS: 0000555555f95300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 21.851140][ T355] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.857587][ T355] CR2: 00007febc95e8a38 CR3: 00000001dc792000 CR4: 00000000003406a0 [ 21.865399][ T355] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.873225][ T355] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.881019][ T355] Kernel panic - not syncing: Fatal exception [ 21.887115][ T355] Kernel Offset: disabled [ 21.891230][ T355] Rebooting in 86400 seconds..