------------[ cut here ]------------
WARNING: CPU: 1 PID: 5526 at kernel/kcov.c:871 kcov_remote_start+0x274/0x6e0 kernel/kcov.c:871
Modules linked in:
CPU: 1 UID: 0 PID: 5526 Comm: syz.0.50 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+0x274/0x6e0 kernel/kcov.c:871
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 04 78 7e 49 c7 c0 bc 1a 69 8d
RSP: 0018:ffffc90000a182b0 EFLAGS: 00010002
RAX: 0000000080010302 RBX: 000000000002d648 RCX: 0000000000000001
RDX: 0000000000000002 RSI: ffffffff8b4cda40 RDI: ffffffff8bb0b5c0
RBP: ffff88801a38bc00 R08: 0000000000000000 R09: fffffbfff28c84e6
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880b932d648
R13: 0000000000000000 R14: 0100000000000005 R15: ffff88801a38bc00
FS: 00007fa67059c6c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000f000 CR3: 000000007d2ac000 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+0x35b/0x6e0 drivers/usb/core/hcd.c:1649
usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1987
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x20f/0xcc0 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x112/0x450 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:__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:165 [inline]
RIP: 0010:_raw_spin_unlock_bh+0x5/0x30 kernel/locking/spinlock.c:210
Code: fe ea f5 5b e9 37 9e 1a 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 53 <48> 8b 74 24 08 48 89 fb 48 8d 7f 18 e8 fa 0e 54 f6 48 89 df e8 12
RSP: 0018:ffffc90000a18820 EFLAGS: 00000286
RAX: ffffc90000a18d30 RBX: ffff88805f498e40 RCX: ffffc900022e1000
RDX: 1ffff920001431a8 RSI: ffffffff8a87bcde RDI: ffff88805f4996d8
RBP: 1ffff9200014311b R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc90000a18b70 R14: dffffc0000000000 R15: ffffc90000a18d30
spin_unlock_bh include/linux/spinlock.h:396 [inline]
ieee80211_rx_handlers+0xf10/0x9a50 net/mac80211/rx.c:4216
ieee80211_invoke_rx_handlers net/mac80211/rx.c:4238 [inline]
ieee80211_prepare_and_rx_handle+0x2b6a/0x6ec0 net/mac80211/rx.c:5086
__ieee80211_rx_handle_packet net/mac80211/rx.c:5291 [inline]
ieee80211_rx_list+0x1b09/0x2e90 net/mac80211/rx.c:5462
ieee80211_rx_napi+0xdd/0x400 net/mac80211/rx.c:5485
ieee80211_rx include/net/mac80211.h:5124 [inline]
ieee80211_handle_queued_frames+0xd5/0x130 net/mac80211/main.c:439
tasklet_action_common.constprop.0+0x24f/0x3e0 kernel/softirq.c:785
handle_softirqs+0x219/0x8f0 kernel/softirq.c:554
do_softirq kernel/softirq.c:455 [inline]
do_softirq+0xb2/0xf0 kernel/softirq.c:442
__local_bh_enable_ip+0x100/0x120 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+0x882/0x4300 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+0x16fe/0x25e0 net/ipv4/ip_output.c:235
ip_do_fragment+0x12b9/0x18b0 net/ipv4/ip_output.c:860
ip_fragment.constprop.0+0x161/0x230 net/ipv4/ip_output.c:584
__ip_finish_output net/ipv4/ip_output.c:311 [inline]
__ip_finish_output+0x2fc/0x950 net/ipv4/ip_output.c:295
ip_finish_output+0x31/0x310 net/ipv4/ip_output.c:323
NF_HOOK_COND include/linux/netfilter.h:303 [inline]
ip_output+0x13b/0x2a0 net/ipv4/ip_output.c:433
dst_output include/net/dst.h:450 [inline]
ip_local_out net/ipv4/ip_output.c:129 [inline]
ip_send_skb+0x3e5/0x560 net/ipv4/ip_output.c:1495
udp_send_skb+0xaa1/0x14e0 net/ipv4/udp.c:981
udp_push_pending_frames net/ipv4/udp.c:1010 [inline]
udp_sendmsg+0x1433/0x2b50 net/ipv4/udp.c:1301
inet_sendmsg+0x105/0x140 net/ipv4/af_inet.c:853
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
__sys_sendto+0x42c/0x4e0 net/socket.c:2204
__do_sys_sendto net/socket.c:2216 [inline]
__se_sys_sendto net/socket.c:2212 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2212
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa66f7779f9
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:00007fa67059c038 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fa66f905f80 RCX: 00007fa66f7779f9
RDX: 000000000000fdbe RSI: 0000000020000100 RDI: 0000000000000007
RBP: 00007fa66f7e58ee R08: 0000000000000000 R09: 0000000011000a00
R10: 0000000004004084 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa66f905f80 R15: 00007ffd6af42938
----------------
Code disassembly (best guess), 2 bytes skipped:
0: f5 cmc
1: 5b pop %rbx
2: e9 37 9e 1a 00 jmp 0x1a9e3e
7: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1)
e: 00 00 00 00
12: 90 nop
13: 90 nop
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: f3 0f 1e fa endbr64
27: 53 push %rbx
* 28: 48 8b 74 24 08 mov 0x8(%rsp),%rsi <-- trapping instruction
2d: 48 89 fb mov %rdi,%rbx
30: 48 8d 7f 18 lea 0x18(%rdi),%rdi
34: e8 fa 0e 54 f6 call 0xf6540f33
39: 48 89 df mov %rbx,%rdi
3c: e8 .byte 0xe8
3d: 12 .byte 0x12