------------[ cut here ]------------ WARNING: CPU: 1 PID: 5980 at kernel/kcov.c:870 kcov_remote_start+0x274/0x6e0 kernel/kcov.c:870 Modules linked in: CPU: 1 PID: 5980 Comm: syz-executor.1 Not tainted 6.9.0-syzkaller-12220-g02c438bbfffe #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:kcov_remote_start+0x274/0x6e0 kernel/kcov.c:870 Code: c0 22 49 89 47 08 e9 87 00 00 00 f6 c4 01 0f 85 06 fe ff ff e9 dc fd ff ff 44 8b 95 1c 16 00 00 45 85 d2 0f 84 d5 fe ff ff 90 <0f> 0b 90 e9 b9 00 00 00 65 8b 05 f5 4b 75 7e 49 c7 c0 b2 42 37 8d RSP: 0018:ffffc90000598190 EFLAGS: 00010002 RAX: 0000000000010302 RBX: 000000000002d648 RCX: ffffffff816bb7ee RDX: 0000000000000002 RSI: ffffffff8b2cba40 RDI: ffffffff8b8fb1a0 RBP: ffff888020ddc880 R08: 0000000000000000 R09: fffffbfff283ea67 R10: 0000000000000001 R11: 0000000000000005 R12: ffff88802c12d648 R13: 0000000000000000 R14: 0100000000000006 R15: ffff888020ddc880 FS: 0000000000000000(0000) GS:ffff88802c100000(0063) knlGS:00000000f5f3eb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000003313b000 CR3: 0000000029162000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> kcov_remote_start_usb include/linux/kcov.h:53 [inline] kcov_remote_start_usb_softirq include/linux/kcov.h:66 [inline] __usb_hcd_giveback_urb+0x331/0x5c0 drivers/usb/core/hcd.c:1647 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1732 dummy_timer+0x13f6/0x3530 drivers/usb/gadget/udc/dummy_hcd.c:1987 __run_hrtimer kernel/time/hrtimer.c:1687 [inline] __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1751 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1813 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire+0x1f2/0x560 kernel/locking/lockdep.c:5722 Code: c1 05 8a de 95 7e 83 f8 01 0f 85 ea 02 00 00 9c 58 f6 c4 02 0f 85 d5 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffffc900005986f8 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff920000b30e1 RCX: ffffffff816bb7ee RDX: 0000000000000001 RSI: ffffffff8b2cba40 RDI: ffffffff8b8fb1a0 RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff283ea7a R10: ffffffff941f53d7 R11: 0000000000000004 R12: 0000000000000001 R13: 0000000000000000 R14: ffff88802a1396d0 R15: 0000000000000000 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] ieee80211_rx_handlers+0xe4/0xc450 net/mac80211/rx.c:4171 ieee80211_invoke_rx_handlers net/mac80211/rx.c:4235 [inline] ieee80211_prepare_and_rx_handle+0x2cd5/0x7070 net/mac80211/rx.c:5083 ieee80211_rx_for_interface+0x10a/0x1f0 net/mac80211/rx.c:5168 __ieee80211_rx_handle_packet net/mac80211/rx.c:5324 [inline] ieee80211_rx_list+0x109c/0x2ec0 net/mac80211/rx.c:5459 ieee80211_rx_napi+0xdd/0x400 net/mac80211/rx.c:5482 ieee80211_rx include/net/mac80211.h:5093 [inline] ieee80211_tasklet_handler+0xd6/0x130 net/mac80211/main.c:438 tasklet_action_common.constprop.0+0x24c/0x3e0 kernel/softirq.c:785 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554 do_softirq kernel/softirq.c:455 [inline] do_softirq+0xb2/0xf0 kernel/softirq.c:442 </IRQ> <TASK> __local_bh_enable_ip+0x100/0x120 kernel/softirq.c:382 ieee80211_tx_skb_tid_band net/mac80211/ieee80211_i.h:2266 [inline] ieee80211_send_scan_probe_req net/mac80211/scan.c:652 [inline] ieee80211_scan_state_send_probe+0x358/0xaa0 net/mac80211/scan.c:680 __ieee80211_start_scan+0x166e/0x1a10 net/mac80211/scan.c:823 ieee80211_scan+0x1d2/0x330 net/mac80211/cfg.c:2874 rdev_scan net/wireless/rdev-ops.h:462 [inline] cfg80211_conn_scan+0x5fe/0xeb0 net/wireless/sme.c:133 cfg80211_sme_connect net/wireless/sme.c:630 [inline] cfg80211_connect+0x17f4/0x1f60 net/wireless/sme.c:1524 nl80211_connect+0x1661/0x21f0 net/wireless/nl80211.c:12031 genl_family_rcv_msg_doit+0x202/0x2f0 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x565/0x800 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2564 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] netlink_unicast+0x542/0x820 net/netlink/af_netlink.c:1361 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x9b4/0xb50 net/socket.c:2585 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2639 __sys_sendmsg+0x117/0x1f0 net/socket.c:2668 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf734c579 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:00000000f5f3e5ac EFLAGS: 00000292 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00000000200001c0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> ---------------- Code disassembly (best guess): 0: c1 05 8a de 95 7e 83 roll $0x83,0x7e95de8a(%rip) # 0x7e95de91 7: f8 clc 8: 01 0f add %ecx,(%rdi) a: 85 ea test %ebp,%edx c: 02 00 add (%rax),%al e: 00 9c 58 f6 c4 02 0f add %bl,0xf02c4f6(%rax,%rbx,2) 15: 85 d5 test %edx,%ebp 17: 02 00 add (%rax),%al 19: 00 48 85 add %cl,-0x7b(%rax) 1c: ed in (%dx),%eax 1d: 74 01 je 0x20 1f: fb sti 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 48 01 c3 add %rax,%rbx <-- trapping instruction 2d: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) 34: 48 c7 43 08 00 00 00 movq $0x0,0x8(%rbx) 3b: 00 3c: 48 rex.W 3d: 8b .byte 0x8b 3e: 84 .byte 0x84 3f: 24 .byte 0x24