./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1865310205 <...> Warning: Permanently added '10.128.1.99' (ED25519) to the list of known hosts. execve("./syz-executor1865310205", ["./syz-executor1865310205"], 0x7ffd2df65de0 /* 10 vars */) = 0 brk(NULL) = 0x555572d05000 brk(0x555572d05d00) = 0x555572d05d00 arch_prctl(ARCH_SET_FS, 0x555572d05380) = 0 set_tid_address(0x555572d05650) = 5838 set_robust_list(0x555572d05660, 24) = 0 rseq(0x555572d05ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1865310205", 4096) = 28 getrandom("\x93\x51\x31\x39\xbc\xe0\xe4\x01", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555572d05d00 brk(0x555572d26d00) = 0x555572d26d00 brk(0x555572d27000) = 0x555572d27000 mprotect(0x7f260fb32000, 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 write(1, "executing program\n", 18executing program ) = 18 bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_RINGBUF, key_size=0, value_size=0, max_entries=32768, map_flags=0, inner_map_fd=-1, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_UNSPEC, insn_cnt=12, insns=0x20000440, license=NULL, 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=-1, 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}, 144) = -1 EFAULT (Bad address) bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SYSCALL, insn_cnt=12, insns=0x20000440, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=BPF_F_ANY_ALIGNMENT|BPF_F_TEST_STATE_FREQ|BPF_F_SLEEPABLE, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=-1, 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}, 144) = 4 [ 64.033197][ T5838] [ 64.035743][ T5838] ============================= [ 64.040984][ T5838] WARNING: suspicious RCU usage [ 64.046059][ T5838] 6.13.0-rc2-syzkaller-00059-g00a5acdbf398 #0 Not tainted [ 64.053439][ T5838] ----------------------------- [ 64.058546][ T5838] kernel/events/callchain.c:162 suspicious rcu_dereference_check() usage! [ 64.067332][ T5838] [ 64.067332][ T5838] other info that might help us debug this: [ 64.067332][ T5838] [ 64.077718][ T5838] [ 64.077718][ T5838] rcu_scheduler_active = 2, debug_locks = 1 [ 64.085799][ T5838] 1 lock held by syz-executor186/5838: [ 64.091498][ T5838] #0: ffffffff8e937fa0 (rcu_read_lock_trace){....}-{0:0}, at: rcu_read_lock_trace+0x38/0x80 [ 64.101964][ T5838] [ 64.101964][ T5838] stack backtrace: [ 64.108091][ T5838] CPU: 1 UID: 0 PID: 5838 Comm: syz-executor186 Not tainted 6.13.0-rc2-syzkaller-00059-g00a5acdbf398 #0 [ 64.119216][ T5838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 [ 64.129275][ T5838] Call Trace: [ 64.132548][ T5838] [ 64.135476][ T5838] dump_stack_lvl+0x241/0x360 [ 64.140153][ T5838] ? __pfx_dump_stack_lvl+0x10/0x10 [ 64.145344][ T5838] ? __pfx__printk+0x10/0x10 [ 64.149937][ T5838] lockdep_rcu_suspicious+0x226/0x340 [ 64.155327][ T5838] get_callchain_entry+0x2b2/0x3c0 [ 64.160447][ T5838] get_perf_callchain+0xec/0x970 [ 64.165409][ T5838] ? __pfx_get_perf_callchain+0x10/0x10 [ 64.170968][ T5838] ? __lock_acquire+0x1397/0x2100 [ 64.176024][ T5838] __bpf_get_stack+0x41f/0xad0 [ 64.180805][ T5838] ? __pfx___bpf_get_stack+0x10/0x10 [ 64.186100][ T5838] ? __pfx_lock_acquire+0x10/0x10 [ 64.191131][ T5838] bpf_get_stack+0x33/0x50 [ 64.195551][ T5838] bpf_get_stack_raw_tp+0x1a3/0x240 [ 64.200757][ T5838] bpf_prog_b8a90dd1efcc4ad9+0x46/0x4a [ 64.206217][ T5838] bpf_prog_run_pin_on_cpu+0x67/0x150 [ 64.211589][ T5838] bpf_prog_test_run_syscall+0x316/0x4e0 [ 64.217225][ T5838] ? __pfx_bpf_prog_test_run_syscall+0x10/0x10 [ 64.223381][ T5838] ? __pfx_bpf_prog_test_run_syscall+0x10/0x10 [ 64.229535][ T5838] bpf_prog_test_run+0x2e4/0x360 [ 64.234474][ T5838] __sys_bpf+0x48d/0x810 [ 64.238714][ T5838] ? __pfx___sys_bpf+0x10/0x10 [ 64.243485][ T5838] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 64.249811][ T5838] ? do_syscall_64+0x100/0x230 [ 64.254580][ T5838] __x64_sys_bpf+0x7c/0x90 [ 64.259001][ T5838] do_syscall_64+0xf3/0x230 [ 64.263508][ T5838] ? clear_bhb_loop+0x35/0x90 [ 64.268189][ T5838] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 64.274169][ T5838] RIP: 0033:0x7f260fabf6a9 [ 64.278582][ T5838] Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 64.298186][ T5838] RSP: 002b:00007fff1a6ffd08 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 64.306598][ T5838] RAX: ffffffffffffffda RBX: 00007fff1a6ffed8 RCX: 00007f260fabf6a9 [ 64.314564][ T5838] RDX: 000000000000000c RSI: 00000000200004c0 RDI: 000000000000000a [ 64.322534][ T5838] RBP: 00007f260fb32610 R08: 00007fff1a6ffed8 R09: 00007fff1a6ffed8 bpf(BPF_PROG_TEST_RUN, {test={prog_fd=4, retval=4294967295, data_size_in=0, data_size_out=0, data_in=NULL, data_out=NULL, repeat=0, duration=0}}, 12) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 64.330503][ T5838] R10: 00007fff1a6ffed8 R1