------------[ cut here ]------------ WARNING: CPU: 3 PID: 9493 at kernel/kcov.c:872 kcov_remote_start+0xf7/0x6d0 kernel/kcov.c:872 Modules linked in: CPU: 3 UID: 0 PID: 9493 Comm: syz.0.1142 Not tainted 6.15.0-rc2-syzkaller-00278-gfc96b232f8e7 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:kcov_remote_start+0xf7/0x6d0 kernel/kcov.c:872 Code: 65 4c 8b 3d a3 79 eb 11 4d 89 7c 24 28 8b 95 18 16 00 00 65 8b 05 a9 79 eb 11 a9 00 01 ff 00 75 53 81 e2 ff ff ff bf 74 4b 90 <0f> 0b 90 e8 e1 55 b4 09 44 8b 1d 3a df fa 18 89 c0 48 03 1c c5 00 RSP: 0018:ffffc900269bea00 EFLAGS: 00010002 RAX: 0000000080000200 RBX: ffffffff93a6b528 RCX: 0000000000000001 RDX: 0000000000000002 RSI: ffffffff8dbc4884 RDI: ffffffff8bf44fc0 RBP: ffff8880233a0000 R08: 4d867db219fabd72 R09: 0000000000000024 R10: ffffc900269be8b8 R11: 0000000000000000 R12: ffff88802b528528 R13: 0000000000000200 R14: 0000000000000000 R15: ffff8880233a0000 FS: 0000000000000000(0000) GS:ffff888097abd000(0063) knlGS:00000000f510eb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000000c30b9ed CR3: 000000006a136000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000e DR6: 00000000ffff0ff0 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:5179 [inline] ieee80211_handle_queued_frames+0xd5/0x130 net/mac80211/main.c:441 ieee80211_stop_device+0x32/0x110 net/mac80211/util.c:1574 ieee80211_do_stop+0x1acf/0x2510 net/mac80211/iface.c:718 ieee80211_stop+0x11d/0x670 net/mac80211/iface.c:778 __dev_close_many+0x298/0x770 net/core/dev.c:1702 __dev_close net/core/dev.c:1714 [inline] __dev_change_flags+0x4d8/0x720 net/core/dev.c:9364 netif_change_flags+0x8d/0x160 net/core/dev.c:9429 do_setlink.constprop.0+0xddf/0x44b0 net/core/rtnetlink.c:3152 rtnl_changelink net/core/rtnetlink.c:3769 [inline] __rtnl_newlink net/core/rtnetlink.c:3928 [inline] rtnl_newlink+0x1446/0x2000 net/core/rtnetlink.c:4065 rtnetlink_rcv_msg+0x95b/0xe90 net/core/rtnetlink.c:6955 netlink_rcv_skb+0x16a/0x440 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x53a/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_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf711e579 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:00000000f510e55c EFLAGS: 00000296 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000080000040 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi