============================= WARNING: suspicious RCU usage 5.10.0-rc6-syzkaller #0 Not tainted ----------------------------- net/wireless/reg.c:144 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 2 locks held by syz-executor.1/10190: #0: ffffffff8523d0f0 ( cb_lock){++++}-{3:3}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:810 #1: ffffffff8523d188 ( genl_mutex ){+.+.}-{3:3} , at: genl_lock net/netlink/genetlink.c:33 [inline] , at: genl_rcv_msg+0x114/0x1e0 net/netlink/genetlink.c:798 stack backtrace: CPU: 0 PID: 10190 Comm: syz-executor.1 Not tainted 5.10.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x77/0x97 lib/dump_stack.c:118 get_wiphy_regdom+0x50/0x60 net/wireless/reg.c:144 wiphy_apply_custom_regulatory+0xaf/0x110 net/wireless/reg.c:2574 mac80211_hwsim_new_radio+0x9b9/0x1640 drivers/net/wireless/mac80211_hwsim.c:3247 hwsim_new_radio_nl+0x29c/0x3f0 drivers/net/wireless/mac80211_hwsim.c:3822 genl_family_rcv_msg_doit.isra.18+0x102/0x140 net/netlink/genetlink.c:739 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0xd8/0x1e0 net/netlink/genetlink.c:800 netlink_rcv_skb+0x49/0xf0 net/netlink/af_netlink.c:2494 genl_rcv+0x1f/0x30 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x19a/0x270 net/netlink/af_netlink.c:1330 netlink_sendmsg+0x248/0x480 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0x2b/0x40 net/socket.c:671 ____sys_sendmsg+0x1ed/0x230 net/socket.c:2331 ___sys_sendmsg+0x77/0xb0 net/socket.c:2385 __sys_sendmsg+0x52/0xa0 net/socket.c:2418 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e159 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2fe9163c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e159 RDX: 0000000004000010 RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffc620cb8bf R14: 00007f2fe91649c0 R15: 000000000119bf8c