syzkaller syzkaller login: [ 33.467701][ T2233] cgroup: Unknown subsys name 'net' [ 33.585092][ T2233] cgroup: Unknown subsys name 'cpuset' [ 33.591549][ T2233] cgroup: Unknown subsys name 'rlimit' [ 33.597120][ T2233] cgroup: Unknown subsys name 'memory' [ 33.822192][ T2233] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 34.758000][ T2238] veth0_vlan: entered promiscuous mode [ 35.105812][ T2238] syz-executor.0 (2238) used greatest stack depth: 10808 bytes left [ 35.176515][ T1520] veth0_vlan: left promiscuous mode Warning: Permanently added '10.128.0.104' (ED25519) to the list of known hosts. 2025/03/01 14:28:19 ignoring optional flag "sandboxArg"="0" 2025/03/01 14:28:19 ignoring optional flag "type"="gce" 2025/03/01 14:28:19 parsed 1 programs 2025/03/01 14:28:19 executed programs: 0 [ 53.112723][ T2483] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 54.068467][ T2489] veth0_vlan: entered promiscuous mode [ 54.374729][ T2717] [ 54.377175][ T2717] ============================= [ 54.382026][ T2717] WARNING: suspicious RCU usage [ 54.386935][ T2717] 6.14.0-rc4-syzkaller #0 Not tainted [ 54.392310][ T2717] ----------------------------- [ 54.397299][ T2717] kernel/events/callchain.c:162 suspicious rcu_dereference_check() usage! [ 54.405848][ T2717] [ 54.405848][ T2717] other info that might help us debug this: [ 54.405848][ T2717] [ 54.416231][ T2717] [ 54.416231][ T2717] rcu_scheduler_active = 2, debug_locks = 1 [ 54.424380][ T2717] 1 lock held by syz-executor.0/2717: [ 54.429784][ T2717] #0: ffffffff8338b6f0 (rcu_read_lock_trace){....}-{0:0}, at: rcu_read_lock_trace+0x16/0x40 [ 54.440019][ T2717] [ 54.440019][ T2717] stack backtrace: [ 54.445986][ T2717] CPU: 0 UID: 0 PID: 2717 Comm: syz-executor.0 Not tainted 6.14.0-rc4-syzkaller #0 [ 54.445992][ T2717] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 54.445994][ T2717] Call Trace: [ 54.445997][ T2717] [ 54.445999][ T2717] dump_stack_lvl+0x9f/0x100 [ 54.446008][ T2717] lockdep_rcu_suspicious+0x15f/0x1b0 [ 54.446012][ T2717] get_callchain_entry+0xff/0x110 [ 54.446016][ T2717] get_perf_callchain+0x48/0x210 [ 54.446019][ T2717] __bpf_get_stack+0x207/0x460 [ 54.446023][ T2717] bpf_get_stack+0x14/0x20 [ 54.446026][ T2717] bpf_get_stack_raw_tp+0xa3/0xc0 [ 54.446031][ T2717] ___bpf_prog_run+0x5aa/0x2070 [ 54.446035][ T2717] __bpf_prog_run32+0xb7/0xe0 [ 54.446039][ T2717] ? migrate_disable+0x30/0xa0 [ 54.446044][ T2717] bpf_prog_run_pin_on_cpu+0x24/0x80 [ 54.446050][ T2717] bpf_prog_test_run_syscall+0xcd/0x140 [ 54.446053][ T2717] ? __fget_files+0x146/0x170 [ 54.446058][ T2717] bpf_prog_test_run+0xdf/0x100 [ 54.446062][ T2717] __sys_bpf+0x2ff/0x5a0 [ 54.446066][ T2717] __x64_sys_bpf+0x13/0x20 [ 54.446069][ T2717] do_syscall_64+0x7e/0x170 [ 54.446073][ T2717] ? clear_bhb_loop+0x45/0xa0 [ 54.446077][ T2717] ? clear_bhb_loop+0x45/0xa0 [ 54.446080][ T2717] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 54.446084][ T2717] RIP: 0033:0x7fb7da57dea9 [ 54.446090][ T2717] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 [ 54.446092][ T2717] RSP: 002b:00007fb7da0ff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 54.446096][ T2717] RAX: ffffffffffffffda RBX: 00007fb7da6abf80 RCX: 00007fb7da57dea9 [ 54.446097][ T2717] RDX: 000000000000000c RSI: 00000000200004c0 RDI: 000000000000000a [ 54.446098][ T2717] RBP: 00007fb7da5ca4a4 R08: 0000000000000000 R09: 0000000000000000 [ 54.446099][ T2717] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 54.446100][ T2717] R13: 000000000000000b R14: 00007fb7da6abf80 R15: 00007ffde7efc638 [ 54.446103][ T2717] 2025/03/01 14:28:24 executed programs: 769 2025/03/01 14:28:29 executed programs: 1986