------------[ cut here ]------------
WARNING: CPU: 1 PID: 9626 at kernel/kcov.c:871 kcov_remote_start+0x5a2/0x7e0 kernel/kcov.c:871
Modules linked in:
CPU: 1 UID: 0 PID: 9626 Comm: syz.4.1247 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 96 d2 19 0a 89 c0 48 c7 c7 c8 d4 02 00 48 03 3c c5 40
RSP: 0018:ffffc90000a17710 EFLAGS: 00010002
RAX: 0000000000010303 RBX: ffff888062381e00 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: ffffffff8beae6e0 RDI: ffffffff8c3f8b40
RBP: 0100000000000001 R08: ffffffff934ee877 R09: 1ffffffff269dd0e
R10: dffffc0000000000 R11: fffffbfff269dd0f R12: ffffffff81937ffe
R13: ffff8880617e5500 R14: 0000000000000006 R15: ffff8880b932d4c8
FS: 00007fef351ff6c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9e851ea40c CR3: 000000002f802000 CR4: 00000000003506f0
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+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:unwind_next_frame+0xc8/0x2a00 arch/x86/kernel/unwind_orc.c:482
Code: 62 52 00 44 89 b4 24 8c 00 00 00 45 85 f6 0f 84 8a 00 00 00 48 89 5c 24 50 bf 01 00 00 00 e8 df d5 21 00 4c 89 e9 4c 8d 6d 50 <4c> 89 e8 48 c1 e8 03 48 89 44 24 40 80 3c 08 00 74 08 4c 89 ef e8
RSP: 0018:ffffc90000a17ea8 EFLAGS: 00000202
RAX: 0000000000000303 RBX: ffffc90000a17fb8 RCX: dffffc0000000000
RDX: ffff888062381e00 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffffc90000a17f80 R08: ffffffff814117f1 R09: ffffc90000a18070
R10: 0000000000000003 R11: ffffffff817f1c90 R12: ffff888062381e00
R13: ffffc90000a17fd0 R14: 0000000000000002 R15: ffffffff8b14cea7
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 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+0x145/0x350 mm/slub.c:4548
skb_kfree_head net/core/skbuff.c:1082 [inline]
skb_free_head net/core/skbuff.c:1096 [inline]
skb_release_data+0x64d/0x880 net/core/skbuff.c:1123
skb_release_all net/core/skbuff.c:1188 [inline]
__kfree_skb net/core/skbuff.c:1202 [inline]
sk_skb_reason_drop+0x1a5/0x3d0 net/core/skbuff.c:1240
ieee80211_rx_handlers+0x3f3d/0xb830 net/mac80211/rx.c:4211
ieee80211_invoke_rx_handlers net/mac80211/rx.c:4238 [inline]
ieee80211_prepare_and_rx_handle+0x31ab/0x6360 net/mac80211/rx.c:5086
__ieee80211_rx_handle_packet net/mac80211/rx.c:5327 [inline]
ieee80211_rx_list+0x2ce0/0x3780 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+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
ieee80211_tx_skb_tid+0x264/0x420 net/mac80211/tx.c:6130
ieee80211_mgmt_tx+0x1b46/0x2180 net/mac80211/offchannel.c:1022
rdev_mgmt_tx net/wireless/rdev-ops.h:760 [inline]
cfg80211_mlme_mgmt_tx+0x950/0x16a0 net/wireless/mlme.c:937
nl80211_tx_mgmt+0xb0d/0x1190 net/wireless/nl80211.c:12808
genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline]
genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1210
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2597
___sys_sendmsg net/socket.c:2651 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680
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: 0033:0x7fef357779f9
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:00007fef351ff038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fef35906208 RCX: 00007fef357779f9
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 000000000000000b
RBP: 00007fef357e58ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fef35906208 R15: 00007ffff29dee48
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 52 push %rdx
1: 00 44 89 b4 add %al,-0x4c(%rcx,%rcx,4)
5: 24 8c and $0x8c,%al
7: 00 00 add %al,(%rax)
9: 00 45 85 add %al,-0x7b(%rbp)
c: f6 0f 84 testb $0x84,(%rdi)
f: 8a 00 mov (%rax),%al
11: 00 00 add %al,(%rax)
13: 48 89 5c 24 50 mov %rbx,0x50(%rsp)
18: bf 01 00 00 00 mov $0x1,%edi
1d: e8 df d5 21 00 call 0x21d601
22: 4c 89 e9 mov %r13,%rcx
25: 4c 8d 6d 50 lea 0x50(%rbp),%r13
* 29: 4c 89 e8 mov %r13,%rax <-- trapping instruction
2c: 48 c1 e8 03 shr $0x3,%rax
30: 48 89 44 24 40 mov %rax,0x40(%rsp)
35: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1)
39: 74 08 je 0x43
3b: 4c 89 ef mov %r13,%rdi
3e: e8 .byte 0xe8