------------[ cut here ]------------
WARNING: CPU: 0 PID: 6264 at kernel/kcov.c:871 kcov_remote_start+0x274/0x6e0 kernel/kcov.c:871
Modules linked in:
CPU: 0 UID: 0 PID: 6264 Comm: syz.1.220 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 05 a7 78 7e 49 c7 c0 f3 ff 64 8d
RSP: 0000:ffffc90000007170 EFLAGS: 00010002
RAX: 0000000080010102 RBX: 000000000002d648 RCX: 0000000000000001
RDX: 0000000000000002 RSI: ffffffff8b4cd360 RDI: ffffffff8bb04620
RBP: ffff888020a8a440 R08: 0000000000000000 R09: fffffbfff28b6ae7
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88802c02d648
R13: 0000000000000000 R14: 0100000000000005 R15: ffff888020a8a440
FS: 0000000000000000(0000) GS:ffff88802c000000(0063) knlGS:00000000f5695b40
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7365788 CR3: 000000005f1b4000 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+0x13c2/0x3500 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:write_comp_data+0x7d/0x90 kernel/kcov.c:262
Code: 00 00 4a 8d 34 dd 28 00 00 00 48 39 f2 72 1b 48 83 c7 01 48 89 38 4c 89 44 30 e0 4c 89 4c 30 e8 4c 89 54 30 f0 4a 89 4c d8 20 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90
RSP: 0000:ffffc900000076d8 EFLAGS: 00000297
RAX: 0000000000000002 RBX: 0000000000000002 RCX: ffffffff813c9599
RDX: ffff888020a8a440 RSI: 0000000000000003 RDI: 0000000000000001
RBP: ffffffff8b49d0c0 R08: 0000000000000001 R09: 0000000000000003
R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000001 R14: 0000000000000003 R15: 0000000000000002
__sanitizer_cov_trace_switch+0x54/0x90 kernel/kcov.c:341
unwind_next_frame+0x789/0x23a0 arch/x86/kernel/unwind_orc.c:581
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4548
skb_kfree_head net/core/skbuff.c:1082 [inline]
skb_kfree_head net/core/skbuff.c:1079 [inline]
skb_free_head+0x18a/0x1d0 net/core/skbuff.c:1096
skb_release_data+0x75c/0x980 net/core/skbuff.c:1123
skb_release_all net/core/skbuff.c:1188 [inline]
__kfree_skb net/core/skbuff.c:1202 [inline]
consume_skb net/core/skbuff.c:1426 [inline]
consume_skb+0xd0/0x170 net/core/skbuff.c:1420
__ieee80211_rx_handle_packet net/mac80211/rx.c:5332 [inline]
ieee80211_rx_list+0x10bf/0x2ec0 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+0xb8b/0x2140 net/bpf/test_run.c:1094
bpf_prog_test_run kernel/bpf/syscall.c:4313 [inline]
__sys_bpf+0x141f/0x5600 kernel/bpf/syscall.c:5728
__do_sys_bpf kernel/bpf/syscall.c:5817 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5815 [inline]
__ia32_sys_bpf+0x76/0xe0 kernel/bpf/syscall.c:5815
do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
__do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386
do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f03579
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 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f569556c EFLAGS: 00000296 ORIG_RAX: 0000000000000165
RAX: ffffffffffffffda RBX: 000000000000000a RCX: 0000000020000080
RDX: 0000000000000050 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 4a 8d 34 dd 28 00 00 lea 0x28(,%r11,8),%rsi
9: 00
a: 48 39 f2 cmp %rsi,%rdx
d: 72 1b jb 0x2a
f: 48 83 c7 01 add $0x1,%rdi
13: 48 89 38 mov %rdi,(%rax)
16: 4c 89 44 30 e0 mov %r8,-0x20(%rax,%rsi,1)
1b: 4c 89 4c 30 e8 mov %r9,-0x18(%rax,%rsi,1)
20: 4c 89 54 30 f0 mov %r10,-0x10(%rax,%rsi,1)
25: 4a 89 4c d8 20 mov %rcx,0x20(%rax,%r11,8)
* 2a: c3 ret <-- trapping instruction
2b: cc int3
2c: cc int3
2d: cc int3
2e: cc int3
2f: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1)
36: 00 00 00 00
3a: 0f 1f 00 nopl (%rax)
3d: 90 nop
3e: 90 nop
3f: 90 nop