Bluetooth: hci2: Opcode 0x0c1a failed: -4
Bluetooth: hci2: Error when powering off device on rfkill (-4)
Bluetooth: hci6: Opcode 0x0c1a failed: -4
Bluetooth: hci6: Error when powering off device on rfkill (-4)
------------[ cut here ]------------
in_task() && kcov_mode_enabled(mode)
WARNING: kernel/kcov.c:884 at kcov_remote_start+0x527/0x7a0 kernel/kcov.c:884, CPU#1: syz.2.1370/12853
Modules linked in:
CPU: 1 UID: 0 PID: 12853 Comm: syz.2.1370 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:kcov_remote_start+0x527/0x7a0 kernel/kcov.c:884
Code: 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d e9 70 a0 e9 02 e8 9b af e9 09 f7 c3 00 02 00 00 0f 84 0c fb ff ff e9 72 fc ff ff 90 <0f> 0b 90 e8 91 c9 e9 09 89 c0 48 c7 c7 50 1f 1d 93 48 03 3c c5 90
RSP: 0018:ffffc900030c7238 EFLAGS: 00010002
RAX: 0000000080000200 RBX: 0000000000000246 RCX: 0000000000000002
RDX: 0000000000000003 RSI: ffffffff8e16b62d RDI: ffffffff8c27d100
RBP: ffffc900030c74d0 R08: ffffc900030c7040 R09: 0000000000000020
R10: dffffc0000000000 R11: ffffffff81a1fa10 R12: ffff8880b8728f50
R13: ffffffff81c5be68 R14: ffff888036728000 R15: 0000000000000000
FS:  00007fbdcf2d16c0(0000) GS:ffff888125557000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3251be CR3: 0000000054422000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 kcov_remote_start_common include/linux/kcov.h:50 [inline]
 ieee80211_rx_list+0xae6/0x3710 net/mac80211/rx.c:5570
 ieee80211_rx_napi+0x1b1/0x3e0 net/mac80211/rx.c:5611
 ieee80211_rx include/net/mac80211.h:5267 [inline]
 ieee80211_handle_queued_frames+0xe8/0x1e0 net/mac80211/main.c:452
 ieee80211_stop_device+0x3e/0xf0 net/mac80211/util.c:1622
 ieee80211_do_stop+0x17fc/0x2010 net/mac80211/iface.c:738
 ieee80211_stop+0x1b1/0x240 net/mac80211/iface.c:832
 __dev_close_many+0x368/0x6d0 net/core/dev.c:1775
 netif_close_many+0x225/0x420 net/core/dev.c:1800
 netif_close+0x160/0x220 net/core/dev.c:1817
 dev_close+0x10a/0x220 net/core/dev_api.c:220
 cfg80211_shutdown_all_interfaces+0xc4/0x200 net/wireless/core.c:282
 cfg80211_rfkill_set_block+0x2d/0x50 net/wireless/core.c:312
 rfkill_set_block+0x1d2/0x440 net/rfkill/core.c:346
 rfkill_fop_write+0x461/0x5a0 net/rfkill/core.c:1301
 vfs_write+0x29a/0xb90 fs/read_write.c:686
 ksys_write+0x150/0x270 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbdce39c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbdcf2d1028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fbdce615fa0 RCX: 00007fbdce39c819
RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000009
RBP: 00007fbdce432c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbdce616038 R14: 00007fbdce615fa0 R15: 00007fff7e8f5558
 </TASK>