============================= WARNING: suspicious RCU usage 6.1.135-syzkaller #0 Not tainted ----------------------------- net/mac80211/sta_info.c:361 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 3 locks held by syz.1.142/4705: #0: ffffffff8db33868 (rtnl_mutex){+.+.}-{3:3}, at: wext_ioctl_dispatch+0xaf/0x470 net/wireless/wext-core.c:996 #1: ffff8880564007c8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5639 [inline] #1: ffff8880564007c8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: cfg80211_wext_siwfreq net/wireless/wext-compat.c:816 [inline] #1: ffff8880564007c8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: __cfg80211_wext_siwfreq+0xec/0x7c0 net/wireless/wext-compat.c:1597 #2: ffff8880565a0d40 (&wdev->mtx){+.+.}-{3:3}, at: wdev_lock net/wireless/core.h:231 [inline] #2: ffff8880565a0d40 (&wdev->mtx){+.+.}-{3:3}, at: cfg80211_ibss_wext_siwfreq+0x1d7/0x370 net/wireless/ibss.c:340 stack backtrace: CPU: 0 PID: 4705 Comm: syz.1.142 Not tainted 6.1.135-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 Call Trace: dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106 lockdep_rcu_suspicious+0x1dd/0x300 kernel/locking/lockdep.c:6611 sta_remove_link+0x356/0x4b0 net/mac80211/sta_info.c:360 sta_info_free+0x50/0x670 net/mac80211/sta_info.c:405 ieee80211_ibss_disconnect+0x3b3/0x710 net/mac80211/ibss.c:704 ieee80211_ibss_leave+0x21/0x130 net/mac80211/ibss.c:1868 rdev_leave_ibss net/wireless/rdev-ops.h:561 [inline] __cfg80211_leave_ibss+0x1da/0x450 net/wireless/ibss.c:211 cfg80211_ibss_wext_siwfreq+0x220/0x370 net/wireless/ibss.c:343 cfg80211_wext_siwfreq net/wireless/wext-compat.c:823 [inline] __cfg80211_wext_siwfreq+0x155/0x7c0 net/wireless/wext-compat.c:1597 ioctl_standard_call+0xd4/0x2b0 net/wireless/wext-core.c:1026 wireless_process_ioctl net/wireless/wext-core.c:964 [inline] wext_ioctl_dispatch+0x3da/0x470 net/wireless/wext-core.c:997 wext_handle_ioctl+0x104/0x1c0 net/wireless/wext-core.c:1058 sock_ioctl+0x145/0x6e0 net/socket.c:1255 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f9ce4d8e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9ce5bdc038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9ce4fb5fa0 RCX: 00007f9ce4d8e969 RDX: 0000200000000000 RSI: 0000000000008b04 RDI: 0000000000000003 RBP: 00007f9ce4e10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f9ce4fb5fa0 R15: 00007ffd82cdc0c8