------------[ cut here ]------------ WARNING: CPU: 0 PID: 26134 at kernel/kcov.c:871 kcov_remote_start+0x5a2/0x7e0 kernel/kcov.c:871 Modules linked in: CPU: 0 PID: 26134 Comm: syz.2.5926 Not tainted 6.10.0-rc7-syzkaller-00012-g34afb82a3c67 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:kcov_remote_start+0x5a2/0x7e0 kernel/kcov.c:871 Code: 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 0f 85 a6 01 00 00 41 f7 c6 00 02 00 00 0f 84 93 fa ff ff fb e9 8d fa ff ff 90 <0f> 0b 90 e8 66 cd ef 09 89 c0 48 c7 c7 c8 d4 02 00 48 03 3c c5 e0 RSP: 0018:ffffc90000007250 EFLAGS: 00010002 RAX: 0000000080010101 RBX: ffff888029c7bc00 RCX: 0000000000000002 RDX: dffffc0000000000 RSI: ffffffff8bcaccc0 RDI: ffffffff8c1fe980 RBP: 0100000000000005 R08: ffffffff92fa75f7 R09: 1ffffffff25f4ebe R10: dffffc0000000000 R11: fffffbfff25f4ebf R12: ffffffff8196315e R13: ffff888023adef00 R14: 0000000000000006 R15: ffff8880b942d4c8 FS: 0000000000000000(0000) GS:ffff8880b9400000(0063) knlGS:00000000f5d80b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f5d7f548 CR3: 00000000671fa000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcov_remote_start_usb include/linux/kcov.h:55 [inline] kcov_remote_start_usb_softirq include/linux/kcov.h:89 [inline] __usb_hcd_giveback_urb+0x405/0x6e0 drivers/usb/core/hcd.c:1649 dummy_timer+0x830/0x45d0 drivers/usb/gadget/udc/dummy_hcd.c:1987 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:kcov_remote_start+0x2e/0x7e0 kernel/kcov.c:925 Code: 55 41 57 41 56 41 55 41 54 53 48 83 ec 18 65 48 8b 1c 25 c0 d4 03 00 48 b8 00 00 00 00 ff ff ff 00 48 85 c7 74 17 90 0f 0b 90 <48> 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 48 89 fd RSP: 0018:ffffc900000079f0 EFLAGS: 00000206 RAX: af80ecda6a617700 RBX: ffff888029c7bc00 RCX: ffffffff8172da6a RDX: dffffc0000000000 RSI: ffffffff8bcabb40 RDI: ffffffff8c1fe980 RBP: ffff8880b942d4c8 R08: ffffffff92fa75ef R09: 1ffffffff25f4ebd R10: dffffc0000000000 R11: fffffbfff25f4ebe R12: 0000000000040000 R13: ffff88801eedd500 R14: 0000000000000206 R15: ffff88807e5e4400 kcov_remote_start_common include/linux/kcov.h:50 [inline] ieee80211_rx_list+0x797/0x3780 net/mac80211/rx.c:5441 ieee80211_rx_napi+0x18a/0x3c0 net/mac80211/rx.c:5482 ieee80211_rx include/net/mac80211.h:5093 [inline] ieee80211_handle_queued_frames+0xe7/0x1e0 net/mac80211/main.c:438 tasklet_action_common+0x321/0x4d0 kernel/softirq.c:785 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 do_softirq+0x11b/0x1e0 kernel/softirq.c:455 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382 ieee80211_tx_skb_tid+0x264/0x420 net/mac80211/tx.c:6131 ieee80211_mgmt_tx+0x1b46/0x2170 net/mac80211/offchannel.c:989 rdev_mgmt_tx net/wireless/rdev-ops.h:762 [inline] cfg80211_mlme_mgmt_tx+0x950/0x16a0 net/wireless/mlme.c:937 nl80211_tx_mgmt+0xb0d/0x1190 net/wireless/nl80211.c:12655 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 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+0x7ea/0x980 net/netlink/af_netlink.c:1361 netlink_sendmsg+0x8db/0xcb0 net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2585 ___sys_sendmsg net/socket.c:2639 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2668 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb4/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7467579 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 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f5d8057c EFLAGS: 00000206 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000020001280 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 55 push %rbp 1: 41 57 push %r15 3: 41 56 push %r14 5: 41 55 push %r13 7: 41 54 push %r12 9: 53 push %rbx a: 48 83 ec 18 sub $0x18,%rsp e: 65 48 8b 1c 25 c0 d4 mov %gs:0x3d4c0,%rbx 15: 03 00 17: 48 b8 00 00 00 00 ff movabs $0xffffff00000000,%rax 1e: ff ff 00 21: 48 85 c7 test %rax,%rdi 24: 74 17 je 0x3d 26: 90 nop 27: 0f 0b ud2 29: 90 nop * 2a: 48 83 c4 18 add $0x18,%rsp <-- trapping instruction 2e: 5b pop %rbx 2f: 41 5c pop %r12 31: 41 5d pop %r13 33: 41 5e pop %r14 35: 41 5f pop %r15 37: 5d pop %rbp 38: c3 ret 39: cc int3 3a: cc int3 3b: cc int3 3c: cc int3 3d: 48 89 fd mov %rdi,%rbp