============================= WARNING: suspicious RCU usage 6.1.137-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 4 locks held by syz.0.16/4386: #0: ffffffff8db93cb0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:860 #1: ffffffff8db33fa8 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0x5b/0x930 net/wireless/nl80211.c:16235 #2: ffff8880270b07c8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5639 [inline] #2: ffff8880270b07c8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: nl80211_pre_doit+0x27d/0x930 net/wireless/nl80211.c:16308 #3: ffff88807a31cd40 (&wdev->mtx){+.+.}-{3:3}, at: wdev_lock net/wireless/core.h:231 [inline] #3: ffff88807a31cd40 (&wdev->mtx){+.+.}-{3:3}, at: cfg80211_leave_ibss+0x4b/0x70 net/wireless/ibss.c:228 stack backtrace: CPU: 0 PID: 4386 Comm: syz.0.16 Not tainted 6.1.137-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_leave_ibss+0x5a/0x70 net/wireless/ibss.c:229 cfg80211_change_iface+0x4b3/0xf80 net/wireless/util.c:1131 nl80211_set_interface+0x5db/0x820 net/wireless/nl80211.c:4209 genl_family_rcv_msg_doit+0x22e/0x320 net/netlink/genetlink.c:756 genl_family_rcv_msg net/netlink/genetlink.c:833 [inline] genl_rcv_msg+0x5f2/0x780 net/netlink/genetlink.c:850 netlink_rcv_skb+0x1de/0x420 net/netlink/af_netlink.c:2493 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline] netlink_unicast+0x74c/0x8c0 net/netlink/af_netlink.c:1337 netlink_sendmsg+0x89e/0xbc0 net/netlink/af_netlink.c:1859 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x59b/0x970 net/socket.c:2519 ___sys_sendmsg+0x21c/0x290 net/socket.c:2573 __sys_sendmsg net/socket.c:2602 [inline] __do_sys_sendmsg net/socket.c:2611 [inline] __se_sys_sendmsg+0x19e/0x270 net/socket.c:2609 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: 0033:0x7f3589b8e969 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:00007f358a9fe038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f3589db5fa0 RCX: 00007f3589b8e969 RDX: 0000000000000000 RSI: 0000200000000100 RDI: 0000000000000003 RBP: 00007f3589c10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f3589db5fa0 R15: 00007ffc2f1cb178