last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '10.128.1.187' (ED25519) to the list of known hosts. [ 90.713781][ T5820] cgroup: Unknown subsys name 'net' [ 90.831985][ T5820] cgroup: Unknown subsys name 'cpuset' [ 90.841160][ T5820] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 92.576030][ T5820] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 94.617567][ T5836] [ 94.620171][ T5836] ============================= [ 94.625044][ T5836] WARNING: suspicious RCU usage [ 94.630425][ T5836] 6.16.0-rc4-next-20250701-syzkaller #0 Not tainted [ 94.637145][ T5836] ----------------------------- [ 94.642307][ T5836] fs/proc/proc_sysctl.c:934 suspicious rcu_dereference_check() usage! [ 94.650593][ T5836] [ 94.650593][ T5836] other info that might help us debug this: [ 94.650593][ T5836] [ 94.660943][ T5836] SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) [ 94.660943][ T5836] rcu_scheduler_active = 2, debug_locks = 1 [ 94.669124][ T5836] 3 locks held by syz-executor/5836: [ 94.674720][ T5836] #0: ffff88803458e428 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 [ 94.684019][ T5836] #1: ffff888022e49c20 (&sb->s_type->i_mutex_key#10){++++}-{4:4}, at: path_openat+0x8cb/0x3830 [ 94.694609][ T5836] #2: ffff888011abfb40 (&lockref->lock){+.+.}-{3:3}, at: d_alloc_parallel+0xbe4/0x15e0 [ 94.704494][ T5836] [ 94.704494][ T5836] stack backtrace: [ 94.710497][ T5836] CPU: 1 UID: 0 PID: 5836 Comm: syz-executor Not tainted 6.16.0-rc4-next-20250701-syzkaller #0 PREEMPT(full) [ 94.710523][ T5836] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 94.710541][ T5836] Call Trace: [ 94.710548][ T5836] [ 94.710555][ T5836] dump_stack_lvl+0x189/0x250 [ 94.710591][ T5836] ? __pfx_dump_stack_lvl+0x10/0x10 [ 94.710617][ T5836] ? __pfx__printk+0x10/0x10 [ 94.710648][ T5836] lockdep_rcu_suspicious+0x140/0x1d0 [ 94.710683][ T5836] proc_sys_compare+0x27d/0x2c0 [ 94.710705][ T5836] ? __pfx_proc_sys_compare+0x10/0x10 [ 94.710729][ T5836] d_alloc_parallel+0x105d/0x15e0 [ 94.710762][ T5836] ? d_alloc_parallel+0x2f0/0x15e0 [ 94.710790][ T5836] ? __pfx_d_alloc_parallel+0x10/0x10 [ 94.710812][ T5836] ? __pfx_default_wake_function+0x10/0x10 [ 94.710846][ T5836] path_openat+0xa3b/0x3830 [ 94.710868][ T5836] ? arch_stack_walk+0xfc/0x150 [ 94.710914][ T5836] ? getname_flags+0xb8/0x540 [ 94.710938][ T5836] ? __pfx_path_openat+0x10/0x10 [ 94.710958][ T5836] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.710993][ T5836] do_filp_open+0x1fa/0x410 [ 94.711014][ T5836] ? __lock_acquire+0xab9/0xd20 [ 94.711036][ T5836] ? __pfx_do_filp_open+0x10/0x10 [ 94.711078][ T5836] ? _raw_spin_unlock+0x28/0x50 [ 94.711099][ T5836] ? alloc_fd+0x64c/0x6c0 [ 94.711124][ T5836] do_sys_openat2+0x121/0x1c0 [ 94.711148][ T5836] ? __pfx_do_sys_openat2+0x10/0x10 [ 94.711166][ T5836] ? fput_close_sync+0x119/0x200 [ 94.711189][ T5836] ? __pfx_fput_close_sync+0x10/0x10 [ 94.711216][ T5836] __x64_sys_openat+0x138/0x170 [ 94.711241][ T5836] do_syscall_64+0xfa/0x3b0 [ 94.711266][ T5836] ? lockdep_hardirqs_on+0x9c/0x150 [ 94.711290][ T5836] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.711307][ T5836] ? clear_bhb_loop+0x60/0xb0 [ 94.711328][ T5836] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.711344][ T5836] RIP: 0033:0x7f24d8b8d211 [ 94.711366][ T5836] Code: 75 57 89 f0 25 00 00 41 00 3d 00 00 41 00 74 49 80 3d 3a 83 1f 00 00 74 6d 89 da 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 93 00 00 00 48 8b 54 24 28 64 48 2b 14 25 [ 94.711380][ T5836] RSP: 002b:00007ffc2bc7bd00 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 [ 94.711399][ T5836] RAX: ffffffffffffffda RBX: 0000000000080001 RCX: 00007f24d8b8d211 [ 94.711412][ T5836] RDX: 0000000000080001 RSI: 00007f24d8c2ae2b RDI: 00000000ffffff9c [ 94.711435][ T5836] RBP: 00007f24d8c2ae2b R08: 0000000000000000 R09: 0000000000000000 [ 94.711445][ T5836] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000009 [ 94.711455][ T5836] R13: 00007ffc2bc7bda0 R14: 0000000000000009 R15: 0000000000000000 [ 94.711480][ T5836] [ 97.129455][ T1216] cfg80211: failed to load regulatory.db