./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1644082798 <...> Warning: Permanently added '10.128.0.90' (ED25519) to the list of known hosts. execve("./syz-executor1644082798", ["./syz-executor1644082798"], 0x7fff52bdf820 /* 10 vars */) = 0 brk(NULL) = 0x555558a84000 brk(0x555558a84d00) = 0x555558a84d00 arch_prctl(ARCH_SET_FS, 0x555558a84380) = 0 set_tid_address(0x555558a84650) = 5836 set_robust_list(0x555558a84660, 24) = 0 rseq(0x555558a84ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1644082798", 4096) = 28 getrandom("\x14\x5c\xed\x75\x52\x57\x4e\xc3", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555558a84d00 brk(0x555558aa5d00) = 0x555558aa5d00 brk(0x555558aa6000) = 0x555558aa6000 mprotect(0x7f7dd7c02000, 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 socket(AF_PACKET, SOCK_PACKET, htons(0 /* ETH_P_??? */)) = 3 setsockopt(3, SOL_SOCKET, SO_BINDTODEVICE, "\x62\x6f\x6e\x64\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16) = 0 [ 110.485581][ T5836] [ 110.493577][ T5836] ============================= [ 110.501815][ T5836] WARNING: suspicious RCU usage [ 110.515535][ T5836] 6.13.0-rc2-syzkaller-00424-gbc6a5efe3dcd #0 Not tainted [ 110.550574][ T5836] ----------------------------- [ 110.563129][ T5836] net/ethtool/common.c:873 suspicious rcu_dereference_protected() usage! [ 110.593295][ T5836] [ 110.593295][ T5836] other info that might help us debug this: [ 110.593295][ T5836] [ 110.609347][ T5836] [ 110.609347][ T5836] rcu_scheduler_active = 2, debug_locks = 1 [ 110.620352][ T5836] 1 lock held by syz-executor164/5836: [ 110.635568][ T5836] #0: ffff888035ec8258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: sk_setsockopt+0xf0f/0x33b0 [ 110.657480][ T5836] [ 110.657480][ T5836] stack backtrace: [ 110.670735][ T5836] CPU: 0 UID: 0 PID: 5836 Comm: syz-executor164 Not tainted 6.13.0-rc2-syzkaller-00424-gbc6a5efe3dcd #0 [ 110.692531][ T5836] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 [ 110.713604][ T5836] Call Trace: [ 110.722372][ T5836] [ 110.727533][ T5836] dump_stack_lvl+0x241/0x360 [ 110.734171][ T5836] ? __pfx_dump_stack_lvl+0x10/0x10 [ 110.741793][ T5836] ? __pfx__printk+0x10/0x10 [ 110.748514][ T5836] lockdep_rcu_suspicious+0x226/0x340 [ 110.755781][ T5836] __ethtool_get_ts_info+0x97/0x410 [ 110.764897][ T5836] ethtool_get_phc_vclocks+0xa1/0x160 [ 110.775722][ T5836] ? __pfx_ethtool_get_phc_vclocks+0x10/0x10 [ 110.790046][ T5836] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 110.801599][ T5836] ? dev_get_by_index+0x23/0x2d0 [ 110.815554][ T5836] sock_set_timestamping+0x3e2/0xab0 [ 110.826681][ T5836] ? __pfx_sock_set_timestamping+0x10/0x10 [ 110.839296][ T5836] sk_setsockopt+0x2150/0x33b0 [ 110.849016][ T5836] ? __pfx_sk_setsockopt+0x10/0x10 [ 110.859210][ T5836] ? aa_sk_perm+0x96d/0xab0 [ 110.868458][ T5836] ? __pfx_aa_sk_perm+0x10/0x10 [ 110.879186][ T5836] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 110.891054][ T5836] ? aa_sock_opt_perm+0x79/0x120 [ 110.900305][ T5836] do_sock_setsockopt+0x2fb/0x720 [ 110.909958][ T5836] ? __pfx_do_sock_setsockopt+0x10/0x10 [ 110.920754][ T5836] ? ptrace_notify+0x279/0x380 [ 110.930216][ T5836] __x64_sys_setsockopt+0x1ee/0x280 [ 110.941030][ T5836] do_syscall_64+0xf3/0x230 [ 110.956296][ T5836] ? clear_bhb_loop+0x35/0x90 [ 110.964665][ T5836] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 110.976719][ T5836] RIP: 0033:0x7f7dd7b8f2e9 [ 110.984996][ T5836] 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 [ 111.015574][ T5836] RSP: 002b:00007ffc67b485b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 111.038772][ T5836] RAX: ffffffffffffffda RBX: 00007ffc67b48788 RCX: 00007f7dd7b8f2e9 [ 111.056601][ T5836] RDX: 0000000000000025 RSI: 0000000000000001 RDI: 0000000000000003 [ 111.068026][ T5836] RBP: 00007f7dd7c02610 R08: 0000000000000004 R09: 00007ffc67b48788 [ 111.083891][ T5836] R10: 0000000020000040 R11: 0000000000000246 R12: 0000000000000001 setsockopt(3, SOL_SOCKET, SO_TIMESTAMPING_OLD, [131071], 4) = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 111.094