------------[ cut here ]------------
WARNING: CPU: 0 PID: 28148 at kernel/kcov.c:871 kcov_remote_start+0x5a2/0x7e0 kernel/kcov.c:871
Modules linked in:
CPU: 0 UID: 0 PID: 28148 Comm: syz.3.5055 Not tainted 6.11.0-rc2-syzkaller-00027-g6a0e38264012 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
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 f6 61 22 0a 89 c0 48 c7 c7 c8 d4 02 00 48 03 3c c5 40
RSP: 0018:ffffc90000007250 EFLAGS: 00010002
RAX: 0000000080010101 RBX: ffff888020678000 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: ffffffff8c0ae6e0 RDI: ffffffff8c605f00
RBP: 0100000000000003 R08: ffffffff9372c877 R09: 1ffffffff26e590e
R10: dffffc0000000000 R11: fffffbfff26e590f R12: ffffffff8193809e
R13: ffff888066e91f00 R14: 0000000000000006 R15: ffff8880b922d4c8
FS: 0000000000000000(0000) GS:ffff8880b9200000(0063) knlGS:00000000f5714b40
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000002000f000 CR3: 0000000059fa0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 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+0x830/0x45a0 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 40 d7 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: 1fd9bf2e0634f700 RBX: ffff888020678000 RCX: ffffffff81702eca
RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c605f00
RBP: ffff8880b922d4c8 R08: ffffffff9372c8bf R09: 1ffffffff26e5917
R10: dffffc0000000000 R11: fffffbfff26e5918 R12: 0000000000040000
R13: ffff88805a257b40 R14: 0000000000000206 R15: ffff88802b1f0c00
kcov_remote_start_common include/linux/kcov.h:50 [inline]
ieee80211_rx_list+0x799/0x3780 net/mac80211/rx.c:5444
ieee80211_rx_napi+0x18a/0x3c0 net/mac80211/rx.c:5485
ieee80211_rx include/net/mac80211.h:5124 [inline]
ieee80211_handle_queued_frames+0xe7/0x1e0 net/mac80211/main.c:439
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
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:908 [inline]
__dev_queue_xmit+0x1763/0x3e90 net/core/dev.c:4450
dev_queue_xmit include/linux/netdevice.h:3105 [inline]
neigh_hh_output include/net/neighbour.h:526 [inline]
neigh_output include/net/neighbour.h:540 [inline]
ip_finish_output2+0xd41/0x1390 net/ipv4/ip_output.c:235
ip_do_fragment+0x1301/0x1b30 net/ipv4/ip_output.c:860
ip_local_out net/ipv4/ip_output.c:129 [inline]
ip_send_skb+0x74/0x100 net/ipv4/ip_output.c:1495
udp_send_skb+0xacf/0x1650 net/ipv4/udp.c:981
udp_push_pending_frames net/ipv4/udp.c:1010 [inline]
udp_sendmsg+0x6a9/0x2a60 net/ipv4/udp.c:1301
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x1a6/0x270 net/socket.c:745
__sys_sendto+0x3a4/0x4f0 net/socket.c:2204
__do_sys_sendto net/socket.c:2216 [inline]
__se_sys_sendto net/socket.c:2212 [inline]
__ia32_sys_sendto+0xdd/0x100 net/socket.c:2212
do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
__do_fast_syscall_32+0xb4/0x110 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: 0023:0xf7fa2579
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:00000000f571456c EFLAGS: 00000206 ORIG_RAX: 0000000000000171
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 0000000020000100
RDX: 000000000000fdbe RSI: 0000000004004084 RDI: 0000000000000000
RBP: 0000000011000a00 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 40 d7 mov %gs:0x3d740,%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