------------[ cut here ]------------
WARNING: CPU: 1 PID: 11256 at kernel/kcov.c:871 kcov_remote_start+0x5a2/0x7e0 kernel/kcov.c:871
Modules linked in:
CPU: 1 UID: 0 PID: 11256 Comm: syz.3.1167 Not tainted 6.10.0-rc6-next-20240703-syzkaller #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 c6 a8 fd 09 89 c0 48 c7 c7 c8 d4 02 00 48 03 3c c5 40
RSP: 0018:ffffc90000a18030 EFLAGS: 00010002
RAX: 0000000000010102 RBX: ffff888023480000 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: ffffffff8bcada80 RDI: ffffffff8c207f20
RBP: 0100000000000005 R08: ffffffff930107f7 R09: 1ffffffff26020fe
R10: dffffc0000000000 R11: fffffbfff26020ff R12: ffffffff81938d8e
R13: ffff88806ae93e00 R14: 0000000000000006 R15: ffff8880b952d4c8
FS: 00007fd3ef7816c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0eecc733b0 CR3: 000000001bb3a000 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:rcu_rnp_online_cpus kernel/rcu/tree.c:4623 [inline]
RIP: 0010:rcu_rdp_cpu_online kernel/rcu/tree.c:4633 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0xbf/0x120 kernel/rcu/tree.c:4674
Code: 18 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 44 57 80 00 48 8b 1b 48 83 c3 70 48 89 d8 48 c1 e8 03 42 80 3c 30 00 <74> 08 48 89 df e8 27 57 80 00 4c 23 3b 75 1a 48 c7 c7 c0 ad 33 8e
RSP: 0018:ffffc90000a187d0 EFLAGS: 00000246
RAX: 1ffffffff1c674a6 RBX: ffffffff8e33a530 RCX: 0000000000000101
RDX: ffff888023480000 RSI: ffffffff8c207f00 RDI: ffff8880b953f960
RBP: ffffc90000a18a30 R08: ffffffff8b08791b R09: ffffffff84af32e5
R10: 000000000000000c R11: 0000000000000000 R12: ffffc90000a18b28
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000002
rcu_read_lock_held_common kernel/rcu/update.c:113 [inline]
rcu_read_lock_held+0x1e/0x50 kernel/rcu/update.c:349
ieee80211_prepare_and_rx_handle+0x219/0x6360 net/mac80211/rx.c:5034
__ieee80211_rx_handle_packet net/mac80211/rx.c:5289 [inline]
ieee80211_rx_list+0x296a/0x3780 net/mac80211/rx.c:5460
ieee80211_rx_napi+0x18a/0x3c0 net/mac80211/rx.c:5483
ieee80211_rx include/net/mac80211.h:5122 [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:915 [inline]
__dev_queue_xmit+0x1763/0x3e90 net/core/dev.c:4450
dev_queue_xmit include/linux/netdevice.h:3104 [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: 0033:0x7fd3ee975bd9
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:00007fd3ef781048 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fd3eeb04038 RCX: 00007fd3ee975bd9
RDX: 00000000040000cf RSI: 0000000020000900 RDI: 0000000000000007
RBP: 00007fd3ee9e4e60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fd3eeb04038 R15: 00007ffe38766c28
----------------
Code disassembly (best guess):
0: 18 48 89 sbb %cl,-0x77(%rax)
3: d8 48 c1 fmuls -0x3f(%rax)
6: e8 03 42 80 3c call 0x3c80420e
b: 30 00 xor %al,(%rax)
d: 74 08 je 0x17
f: 48 89 df mov %rbx,%rdi
12: e8 44 57 80 00 call 0x80575b
17: 48 8b 1b mov (%rbx),%rbx
1a: 48 83 c3 70 add $0x70,%rbx
1e: 48 89 d8 mov %rbx,%rax
21: 48 c1 e8 03 shr $0x3,%rax
25: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1)
* 2a: 74 08 je 0x34 <-- trapping instruction
2c: 48 89 df mov %rbx,%rdi
2f: e8 27 57 80 00 call 0x80575b
34: 4c 23 3b and (%rbx),%r15
37: 75 1a jne 0x53
39: 48 c7 c7 c0 ad 33 8e mov $0xffffffff8e33adc0,%rdi