netdevsim netdevsim4 eth1: unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim4 eth2: unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim4 eth3: unset [1, 0] type 2 family 0 port 6081 - 0 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 19312 at kernel/kcov.c:872 kcov_remote_start+0xf7/0x6d0 kernel/kcov.c:872 Modules linked in: CPU: 1 UID: 0 PID: 19312 Comm: syz.4.4474 Not tainted 6.16.0-rc2-syzkaller-00024-g9afe652958c3 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:kcov_remote_start+0xf7/0x6d0 kernel/kcov.c:872 Code: 65 4c 8b 3d 23 a5 10 12 4d 89 7c 24 28 8b 95 18 16 00 00 65 8b 05 29 a5 10 12 a9 00 01 ff 00 75 53 81 e2 ff ff ff bf 74 4b 90 <0f> 0b 90 e8 71 f9 c3 09 44 8b 1d 1a 35 20 19 89 c0 48 03 1c c5 a0 RSP: 0018:ffffc900040de9d0 EFLAGS: 00010002 RAX: 0000000080000200 RBX: ffffffff93cd5968 RCX: 0000000000000001 RDX: 0000000000000002 RSI: ffffffff8ddf48cb RDI: ffffffff8c1579e0 RBP: ffff888036b0c880 R08: d9b0764d91d65dfe R09: 0000000000000050 R10: ffffc900040de890 R11: 0000000000000001 R12: ffff8880b8528968 R13: 0000000000000200 R14: 0000000000000000 R15: ffff888036b0c880 FS: 00007f616706a6c0(0000) GS:ffff888124853000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000026000 CR3: 0000000047e71000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcov_remote_start_common include/linux/kcov.h:50 [inline] ieee80211_rx_list+0x45f/0x2980 net/mac80211/rx.c:5398 ieee80211_rx_napi+0xdc/0x410 net/mac80211/rx.c:5439 ieee80211_rx include/net/mac80211.h:5185 [inline] ieee80211_handle_queued_frames+0xd5/0x130 net/mac80211/main.c:441 ieee80211_stop_device+0x32/0x110 net/mac80211/util.c:1563 ieee80211_do_stop+0x1ac3/0x2520 net/mac80211/iface.c:721 ieee80211_stop+0x165/0x300 net/mac80211/iface.c:814 __dev_close_many+0x298/0x770 net/core/dev.c:1756 __dev_close net/core/dev.c:1768 [inline] __dev_change_flags+0x4d8/0x720 net/core/dev.c:9456 netif_change_flags+0x8d/0x160 net/core/dev.c:9521 do_setlink.constprop.0+0xb53/0x4380 net/core/rtnetlink.c:3141 rtnl_group_changelink net/core/rtnetlink.c:3773 [inline] __rtnl_newlink net/core/rtnetlink.c:3927 [inline] rtnl_newlink+0x18e0/0x2000 net/core/rtnetlink.c:4055 rtnetlink_rcv_msg+0x95b/0xe90 net/core/rtnetlink.c:6944 netlink_rcv_skb+0x155/0x420 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x53d/0x7f0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0xa95/0xc70 net/socket.c:2566 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2620 __sys_sendmsg+0x16d/0x220 net/socket.c:2652 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f616618e929 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:00007f616706a038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f61663b6080 RCX: 00007f616618e929 RDX: 0000000004000c00 RSI: 0000200000000180 RDI: 0000000000000004 RBP: 00007f6166210b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f61663b6080 R15: 00007ffe10750bb8