------------[ cut here ]------------
WARNING: CPU: 0 PID: 5495 at kernel/kcov.c:871 kcov_remote_start+0x5a2/0x7e0 kernel/kcov.c:871
Modules linked in:
CPU: 0 UID: 0 PID: 5495 Comm: syz.1.43 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:ffffc90000007050 EFLAGS: 00010002
RAX: 0000000080010101 RBX: ffff888020f20000 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: ffffffff8c0ae6e0 RDI: ffffffff8c605f00
RBP: 0100000000000006 R08: ffffffff9372c877 R09: 1ffffffff26e590e
R10: dffffc0000000000 R11: fffffbfff26e590f R12: ffffffff8193809e
R13: ffff88802c002d00 R14: 0000000000000006 R15: ffff8880b922d4c8
FS: 00007fa615ff46c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f88301c7290 CR3: 0000000020356000 CR4: 0000000000350ef0
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+0x59d/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+0x112/0x3f0 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:__sanitizer_cov_trace_switch+0x6/0x120 kernel/kcov.c:317
Code: 20 e9 b9 c4 5c 0a 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 <41> 56 41 54 53 4c 8b 16 48 8b 46 08 48 83 c0 f8 48 c1 c0 3d 48 83
RSP: 0018:ffffc900000077f0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: dffffc0000000000
RDX: ffff888020f20000 RSI: ffffffff8fefec40 RDI: 0000000000000001
RBP: ffffc90000007a30 R08: ffffffff8b2cf685 R09: ffffffff84affa85
R10: 000000000000000c R11: 0000000000000000 R12: 1ffff1100f3f2500
R13: dffffc0000000000 R14: ffff888079f92800 R15: ffff88807ece4800
ieee80211_accept_frame net/mac80211/rx.c:4439 [inline]
ieee80211_prepare_and_rx_handle+0x6e0/0x6360 net/mac80211/rx.c:5041
__ieee80211_rx_handle_packet net/mac80211/rx.c:5291 [inline]
ieee80211_rx_list+0x296a/0x3780 net/mac80211/rx.c:5462
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+0x323/0x4d0 kernel/softirq.c:785
handle_softirqs+0x2c6/0x970 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_local_out net/ipv4/ip_output.c:129 [inline]
__ip_queue_xmit+0x118c/0x1b80 net/ipv4/ip_output.c:535
l2tp_ip_sendmsg+0x63b/0x1670 net/l2tp/l2tp_ip.c:500
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x1a6/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2597
___sys_sendmsg net/socket.c:2651 [inline]
__sys_sendmmsg+0x3b2/0x740 net/socket.c:2737
__do_sys_sendmmsg net/socket.c:2766 [inline]
__se_sys_sendmmsg net/socket.c:2763 [inline]
__x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2763
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa6151779f9
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:00007fa615ff4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fa615305f80 RCX: 00007fa6151779f9
RDX: 00000000040000cf RSI: 0000000020000900 RDI: 0000000000000005
RBP: 00007fa6151e58ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa615305f80 R15: 00007fffde76dfd8
----------------
Code disassembly (best guess):
0: 20 e9 and %ch,%cl
2: b9 c4 5c 0a 66 mov $0x660a5cc4,%ecx
7: 2e 0f 1f 84 00 00 00 cs nopl 0x0(%rax,%rax,1)
e: 00 00
10: 0f 1f 40 00 nopl 0x0(%rax)
14: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 90 nop
19: 90 nop
1a: 90 nop
1b: 90 nop
1c: 90 nop
1d: 90 nop
1e: 90 nop
1f: 90 nop
20: 90 nop
21: 90 nop
22: 90 nop
23: 90 nop
24: f3 0f 1e fa endbr64
28: 41 57 push %r15
* 2a: 41 56 push %r14 <-- trapping instruction
2c: 41 54 push %r12
2e: 53 push %rbx
2f: 4c 8b 16 mov (%rsi),%r10
32: 48 8b 46 08 mov 0x8(%rsi),%rax
36: 48 83 c0 f8 add $0xfffffffffffffff8,%rax
3a: 48 c1 c0 3d rol $0x3d,%rax
3e: 48 rex.W
3f: 83 .byte 0x83