INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 1 PID: 11732 Comm: syz-executor.0 Not tainted 4.19.163-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2fe lib/dump_stack.c:118
 assign_lock_key kernel/locking/lockdep.c:727 [inline]
 register_lock_class+0xe76/0x11c0 kernel/locking/lockdep.c:753
 __lock_acquire+0x17d/0x3ff0 kernel/locking/lockdep.c:3303
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3907
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:152
 skb_dequeue+0x1c/0x180 net/core/skbuff.c:2819
 skb_queue_purge+0x21/0x30 net/core/skbuff.c:2857
 l2cap_chan_del+0x690/0xa50 net/bluetooth/l2cap_core.c:637
 l2cap_chan_close+0x1b5/0x950 net/bluetooth/l2cap_core.c:757
 l2cap_sock_shutdown+0x339/0xe10 net/bluetooth/l2cap_sock.c:1159
 l2cap_sock_release+0x77/0x290 net/bluetooth/l2cap_sock.c:1202
 __sock_release+0xcd/0x2a0 net/socket.c:579
 sock_close+0x15/0x20 net/socket.c:1140
 __fput+0x2ce/0x890 fs/file_table.c:278
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 get_signal+0x1b64/0x1f70 kernel/signal.c:2400
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:821
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45e299
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffaca319c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 000000000045e299
RDX: 000000000000000e RSI: 0000000020000040 RDI: 0000000000000004
RBP: 000000000119c068 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034
R13: 00007fff6e66537f R14: 00007ffaca31a9c0 R15: 000000000119c034
nla_parse: 5 callbacks suppressed
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
Bluetooth: hci5: command 0x0405 tx timeout
EXT4-fs: Warning: mounting with data=journal disables delayed allocation and O_DIRECT support!
[EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=e002c01c, mo2=0006]
System zones: 1-2, 19-19, 35-38, 46-46
EXT4-fs (loop4): mounting with "discard" option, but the device does not support discard
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
[EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=e002c01c, mo2=0006]
System zones: 1-2, 19-19, 35-38, 46-46
EXT4-fs (loop4): mounting with "discard" option, but the device does not support discard
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
[EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=e002c01c, mo2=0006]
System zones: 1-2, 19-19, 35-38, 46-46
EXT4-fs (loop5): mounting with "discard" option, but the device does not support discard
EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue
[EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=e002c01c, mo2=0006]
System zones: 1-2, 19-19, 35-38, 46-46
[EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=e002c01c, mo2=0006]
EXT4-fs (loop4): mounting with "discard" option, but the device does not support discard
System zones: 1-2, 19-19, 35-38, 46-46
EXT4-fs (loop1): mounting with "discard" option, but the device does not support discard
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue
[EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=e002c01c, mo2=0006]
System zones: 1-2, 19-19, 35-38, 46-46
[EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=e002c01c, mo2=0006]
EXT4-fs (loop2): mounting with "discard" option, but the device does not support discard
System zones: 1-2, 19-19, 35-38, 46-46
EXT4-fs (loop5): mounting with "discard" option, but the device does not support discard
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
[EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=e002c01c, mo2=0006]
EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue
System zones: 1-2, 19-19, 35-38, 46-46
EXT4-fs (loop1): mounting with "discard" option, but the device does not support discard
[EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=e002c01c, mo2=0006]
EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue
System zones: 1-2, 19-19, 35-38, 46-46
EXT4-fs (loop4): mounting with "discard" option, but the device does not support discard
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
[EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=e002c01c, mo2=0006]
System zones: 1-2, 19-19, 35-38, 46-46
EXT4-fs (loop5): mounting with "discard" option, but the device does not support discard
EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue
[EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=e002c01c, mo2=0006]
System zones: 1-2, 19-19, 35-38, 46-46
EXT4-fs (loop2): mounting with "discard" option, but the device does not support discard
[EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=e002c01c, mo2=0006]
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
System zones: 1-2, 19-19, 35-38, 46-46
EXT4-fs (loop1): mounting with "discard" option, but the device does not support discard
EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue
[EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=e002c01c, mo2=0006]
System zones: 1-2, 19-19, 35-38, 46-46
EXT4-fs (loop2): mounting with "discard" option, but the device does not support discard
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
nla_parse: 16 callbacks suppressed
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.2'.
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.2'.
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.2'.