last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '10.128.10.14' (ED25519) to the list of known hosts. [ 68.727310][ T5819] cgroup: Unknown subsys name 'net' [ 68.898550][ T5819] cgroup: Unknown subsys name 'cpuset' [ 68.907189][ T5819] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 70.277519][ T5819] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 71.298778][ T1303] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.305211][ T1303] ieee802154 phy1 wpan1: encryption failed: -22 [ 80.245497][ T5832] [ 80.248066][ T5832] ============================= [ 80.252931][ T5832] WARNING: suspicious RCU usage [ 80.257865][ T5832] 6.16.0-rc4-next-20250701-syzkaller #0 Not tainted [ 80.264427][ T5832] ----------------------------- [ 80.269273][ T5832] fs/proc/proc_sysctl.c:934 suspicious rcu_dereference_check() usage! [ 80.277438][ T5832] [ 80.277438][ T5832] other info that might help us debug this: [ 80.277438][ T5832] [ 80.287688][ T5832] [ 80.287688][ T5832] rcu_scheduler_active = 2, debug_locks = 1 [ 80.295759][ T5832] 3 locks held by syz-executor/5832: [ 80.301018][ T5832] #0: ffff888030574428 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 [ 80.310258][ T5832] #1: ffff8880230d8190 (&sb->s_type->i_mutex_key#10){++++}-{4:4}, at: path_openat+0x8cb/0x3830 [ 80.320720][ T5832] #2: ffff88807e2779c8 (&lockref->lock){+.+.}-{3:3}, at: d_alloc_parallel+0xbe4/0x15e0 [ 80.330495][ T5832] [ 80.330495][ T5832] stack backtrace: [ 80.336449][ T5832] CPU: 0 UID: 0 PID: 5832 Comm: syz-executor Not tainted 6.16.0-rc4-next-20250701-syzkaller #0 PREEMPT(full) [ 80.336463][ T5832] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 80.336475][ T5832] Call Trace: [ 80.336480][ T5832] [ 80.336489][ T5832] dump_stack_lvl+0x189/0x250 [ 80.336511][ T5832] ? __pfx_dump_stack_lvl+0x10/0x10 [ 80.336523][ T5832] ? __pfx__printk+0x10/0x10 [ 80.336607][ T5832] lockdep_rcu_suspicious+0x140/0x1d0 [ 80.336625][ T5832] proc_sys_compare+0x27d/0x2c0 [ 80.336636][ T5832] ? __pfx_proc_sys_compare+0x10/0x10 [ 80.336647][ T5832] d_alloc_parallel+0x105d/0x15e0 [ 80.336664][ T5832] ? d_alloc_parallel+0x2f0/0x15e0 [ 80.336681][ T5832] ? __pfx_d_alloc_parallel+0x10/0x10 [ 80.336703][ T5832] ? __pfx_default_wake_function+0x10/0x10 [ 80.336725][ T5832] path_openat+0xa3b/0x3830 [ 80.336735][ T5832] ? arch_stack_walk+0xfc/0x150 [ 80.336758][ T5832] ? getname_flags+0xb8/0x540 [ 80.336776][ T5832] ? __pfx_path_openat+0x10/0x10 [ 80.336785][ T5832] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 80.336805][ T5832] do_filp_open+0x1fa/0x410 [ 80.336815][ T5832] ? __lock_acquire+0xab9/0xd20 [ 80.336830][ T5832] ? __pfx_do_filp_open+0x10/0x10 [ 80.336852][ T5832] ? _raw_spin_unlock+0x28/0x50 [ 80.336862][ T5832] ? alloc_fd+0x64c/0x6c0 [ 80.336881][ T5832] do_sys_openat2+0x121/0x1c0 [ 80.336892][ T5832] ? __pfx_do_sys_openat2+0x10/0x10 [ 80.336900][ T5832] ? fput_close_sync+0x119/0x200 [ 80.336911][ T5832] ? __pfx_fput_close_sync+0x10/0x10 [ 80.336924][ T5832] __x64_sys_openat+0x138/0x170 [ 80.336937][ T5832] do_syscall_64+0xfa/0x3b0 [ 80.336949][ T5832] ? lockdep_hardirqs_on+0x9c/0x150 [ 80.336960][ T5832] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 80.336969][ T5832] ? clear_bhb_loop+0x60/0xb0 [ 80.336982][ T5832] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 80.336992][ T5832] RIP: 0033:0x7fa66218d211 [ 80.337006][ T5832] 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 SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) [ 80.337014][ T5832] RSP: 002b:00007ffe575748d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 [ 80.337025][ T5832] RAX: ffffffffffffffda RBX: 0000000000080001 RCX: 00007fa66218d211 [ 80.337032][ T5832] RDX: 0000000000080001 RSI: 00007fa66222ae2b RDI: 00000000ffffff9c [ 80.337039][ T5832] RBP: 00007fa66222ae2b R08: 0000000000000000 R09: 0000000000000000 [ 80.337045][ T5832] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000009 [ 80.337051][ T5832] R13: 00007ffe57574970 R14: 0000000000000009 R15: 0000000000000000 [ 80.337065][ T5832] [ 86.661973][ T979] cfg80211: failed to load regulatory.db