------------[ cut here ]------------
WARNING: CPU: 2 PID: 12910 at kernel/kcov.c:871 kcov_remote_start+0x274/0x6e0 kernel/kcov.c:871
Modules linked in:
CPU: 2 UID: 0 PID: 12910 Comm: syz.2.2681 Not tainted 6.11.0-rc2-syzkaller-00027-g6a0e38264012 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
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 85 4d 79 7e 49 c7 c0 75 b7 68 8d
RSP: 0018:ffffc900008581d0 EFLAGS: 00010002
RAX: 0000000000010103 RBX: 000000000002d648 RCX: 0000000000000001
RDX: 0000000000000002 RSI: ffffffff8b4cc800 RDI: ffffffff8bb08880
RBP: ffff88805964a440 R08: 0000000000000000 R09: fffffbfff28c5ae7
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88806b22d648
R13: 0000000000000000 R14: 0100000000000005 R15: ffff88805964a440
FS: 00007fd6dafff6c0(0000) GS:ffff88806b200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 00000000596a4000 CR4: 0000000000350ef0
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+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+0x20c/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+0x10f/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:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:write_comp_data+0x11/0x90 kernel/kcov.c:236
Code: cc cc 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 49 89 d2 49 89 f8 49 89 f1 65 48 8b 15 4f 64 79 7e <65> 8b 05 50 64 79 7e a9 00 01 ff 00 74 0f f6 c4 01 74 59 8b 82 1c
RSP: 0018:ffffc90000858748 EFLAGS: 00000283
RAX: 0000000000000862 RBX: 0000000000000004 RCX: ffffffff81a5a714
RDX: ffff88805964a440 RSI: 0000000000000003 RDI: 0000000000000004
RBP: 000000000000006c R08: 0000000000000004 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000000 R12: ffffc900008589e8
R13: 0000000000000003 R14: dffffc0000000000 R15: 0000280100000000
bpf_bprintf_prepare+0x744/0x1490 kernel/bpf/helpers.c:847
____bpf_trace_printk kernel/trace/bpf_trace.c:385 [inline]
bpf_trace_printk+0xdb/0x190 kernel/trace/bpf_trace.c:375
___bpf_prog_run+0x3e51/0xabd0 kernel/bpf/core.c:2010
__bpf_prog_run32+0xc1/0x100 kernel/bpf/core.c:2251
bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline]
__bpf_prog_run include/linux/filter.h:691 [inline]
bpf_prog_run include/linux/filter.h:698 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2406 [inline]
bpf_trace_run3+0x240/0x5a0 kernel/trace/bpf_trace.c:2448
trace_kmem_cache_free include/trace/events/kmem.h:114 [inline]
kmem_cache_free+0x1dd/0x3a0 mm/slub.c:4547
kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1146
__kfree_skb net/core/skbuff.c:1203 [inline]
consume_skb net/core/skbuff.c:1426 [inline]
consume_skb+0xdd/0x170 net/core/skbuff.c:1420
__ieee80211_rx_handle_packet net/mac80211/rx.c:5332 [inline]
ieee80211_rx_list+0x1105/0x2e90 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+0x24c/0x3e0 kernel/softirq.c:785
handle_softirqs+0x216/0x8f0 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]
bpf_test_run+0x3a9/0xa90 net/bpf/test_run.c:436
bpf_prog_test_run_skb+0xb6e/0x20f0 net/bpf/test_run.c:1094
bpf_prog_test_run kernel/bpf/syscall.c:4313 [inline]
__sys_bpf+0x10d2/0x4a20 kernel/bpf/syscall.c:5728
__do_sys_bpf kernel/bpf/syscall.c:5817 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5815 [inline]
__x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5815
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: 0033:0x7fd6db5779f9
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:00007fd6dafff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fd6db705f80 RCX: 00007fd6db5779f9
RDX: 0000000000000050 RSI: 0000000020000080 RDI: 000000000000000a
RBP: 00007fd6db5e58ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd6db705f80 R15: 00007ffca1e165d8
----------------
Code disassembly (best guess):
0: cc int3
1: cc int3
2: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
9: 90 nop
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 90 nop
19: 49 89 d2 mov %rdx,%r10
1c: 49 89 f8 mov %rdi,%r8
1f: 49 89 f1 mov %rsi,%r9
22: 65 48 8b 15 4f 64 79 mov %gs:0x7e79644f(%rip),%rdx # 0x7e796479
29: 7e
* 2a: 65 8b 05 50 64 79 7e mov %gs:0x7e796450(%rip),%eax # 0x7e796481 <-- trapping instruction
31: a9 00 01 ff 00 test $0xff0100,%eax
36: 74 0f je 0x47
38: f6 c4 01 test $0x1,%ah
3b: 74 59 je 0x96
3d: 8b .byte 0x8b
3e: 82 .byte 0x82
3f: 1c .byte 0x1c