------------[ cut here ]------------ intf 08:02:11:00:00:00 [link=0]: bad STA 08:02:11:00:00:01 bandwidth 20 MHz (0) > channel config 5 MHz (6) WARNING: drivers/net/wireless/virtual/mac80211_hwsim.c:2693 at mac80211_hwsim_sta_rc_update+0x5e4/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2693, CPU#2: syz.3.24459/26399 Modules linked in: CPU: 2 UID: 0 PID: 26399 Comm: syz.3.24459 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:mac80211_hwsim_sta_rc_update+0x607/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2693 Code: 48 8d 3d 6c 70 ae 09 48 8b 4c 24 10 48 8b 44 24 20 89 da 44 8b 89 b8 01 00 00 41 54 48 8d b0 72 05 00 00 41 55 44 8b 44 24 14 <67> 48 0f b9 3a 58 5a e9 39 fc ff ff e8 f8 25 d8 fa e8 53 5f 8f 04 RSP: 0018:ffffc90002d77138 EFLAGS: 00010246 RAX: ffff888058356a60 RBX: 0000000000000000 RCX: ffff888052798ec0 RDX: 0000000000000000 RSI: ffff888058356fd2 RDI: ffffffff9094a840 RBP: dffffc0000000000 R08: 0000000000000014 R09: 0000000000000000 R10: 0000000000000006 R11: ffff888027a40b30 R12: 0000000000000006 R13: 0000000000000005 R14: ffff888052799088 R15: ffff888062653100 FS: 0000000000000000(0000) GS:ffff8880978f9000(0063) knlGS:00000000f54e6b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f54e5528 CR3: 0000000055dee000 CR4: 0000000000352ef0 Call Trace: mac80211_hwsim_sta_add+0xc9/0x290 drivers/net/wireless/virtual/mac80211_hwsim.c:2713 drv_sta_add net/mac80211/driver-ops.h:470 [inline] drv_sta_state+0x90d/0x17c0 net/mac80211/driver-ops.c:155 sta_info_insert_drv_state net/mac80211/sta_info.c:824 [inline] sta_info_insert_finish net/mac80211/sta_info.c:932 [inline] sta_info_insert_rcu+0x121b/0x3070 net/mac80211/sta_info.c:1009 sta_info_insert+0x16/0xd0 net/mac80211/sta_info.c:1014 ieee80211_add_station+0x46d/0x6c0 net/mac80211/cfg.c:2411 rdev_add_station net/wireless/rdev-ops.h:201 [inline] nl80211_new_station+0x14ed/0x1c60 net/wireless/nl80211.c:8782 genl_family_rcv_msg_doit+0x209/0x2f0 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x55c/0x800 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] ____sys_sendmsg+0xa5d/0xc30 net/socket.c:2592 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2646 __sys_sendmsg+0x16d/0x220 net/socket.c:2678 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xe8/0x680 arch/x86/entry/syscall_32.c:307 do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:332 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7ff7579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f54e655c EFLAGS: 00000296 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000080001080 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 48 8d 3d 6c 70 ae 09 lea 0x9ae706c(%rip),%rdi # 0x9ae7073 7: 48 8b 4c 24 10 mov 0x10(%rsp),%rcx c: 48 8b 44 24 20 mov 0x20(%rsp),%rax 11: 89 da mov %ebx,%edx 13: 44 8b 89 b8 01 00 00 mov 0x1b8(%rcx),%r9d 1a: 41 54 push %r12 1c: 48 8d b0 72 05 00 00 lea 0x572(%rax),%rsi 23: 41 55 push %r13 25: 44 8b 44 24 14 mov 0x14(%rsp),%r8d * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 58 pop %rax 30: 5a pop %rdx 31: e9 39 fc ff ff jmp 0xfffffc6f 36: e8 f8 25 d8 fa call 0xfad82633 3b: e8 53 5f 8f 04 call 0x48f5f93