tipc: Enabled bearer , priority 0 ============================= WARNING: suspicious RCU usage syzkaller #0 Not tainted ----------------------------- net/mac80211/iface.c:378 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz.5.1014/10731: #0: ffffffff8e3c0208 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x7a4/0x1140 net/core/dev_ioctl.c:769 stack backtrace: CPU: 1 PID: 10731 Comm: syz.5.1014 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 lockdep_rcu_suspicious+0x1e1/0x300 kernel/locking/lockdep.c:6731 ieee80211_check_concurrent_iface+0x475/0x950 net/mac80211/iface.c:378 ieee80211_open+0xc1/0x200 net/mac80211/iface.c:466 __dev_open+0x2cb/0x430 net/core/dev.c:1519 __dev_change_flags+0x211/0x6a0 net/core/dev.c:8698 dev_change_flags+0x88/0x1a0 net/core/dev.c:8770 dev_ioctl+0x7b4/0x1140 net/core/dev_ioctl.c:770 sock_do_ioctl+0x239/0x310 net/socket.c:1233 sock_ioctl+0x5ba/0x7e0 net/socket.c:1340 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fe322d9bf79 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe323be6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe323015fa0 RCX: 00007fe322d9bf79 RDX: 0000200000002280 RSI: 0000000000008914 RDI: 0000000000000004 RBP: 00007fe322e327e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe323016038 R14: 00007fe323015fa0 R15: 00007ffed9206d48 mac80211_hwsim hwsim13 syzkaller0: entered promiscuous mode mac80211_hwsim hwsim13 syzkaller0: entered allmulticast mode tipc: Resetting bearer