INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 12571 Comm: syz-executor.4 Not tainted 4.14.228-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 register_lock_class+0x32b/0x1320 kernel/locking/lockdep.c:768
 __lock_acquire+0x167/0x3f20 kernel/locking/lockdep.c:3378
 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:160
 skb_dequeue+0x1c/0x180 net/core/skbuff.c:2831
 skb_queue_purge+0x21/0x30 net/core/skbuff.c:2869
 l2cap_chan_del+0x56d/0x950 net/bluetooth/l2cap_core.c:637
 l2cap_chan_close+0x103/0x870 net/bluetooth/l2cap_core.c:757
 l2cap_sock_shutdown+0x2e7/0xc20 net/bluetooth/l2cap_sock.c:1160
 l2cap_sock_release+0x77/0x280 net/bluetooth/l2cap_sock.c:1203
 __sock_release+0xcd/0x2b0 net/socket.c:602
 sock_close+0x15/0x20 net/socket.c:1139
 __fput+0x25f/0x7a0 fs/file_table.c:210
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x41926b
RSP: 002b:00007ffe63d3bc30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 000000000041926b
RDX: ffffffffffffffbc RSI: 00000000089075c3 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2d921ed4
R10: 00007ffe63d3bd20 R11: 0000000000000293 R12: 0000000000031093
R13: 00000000000003e8 R14: 000000000056bf60 R15: 0000000000031070
L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details.
vxfs: WRONG superblock magic 00000000 at 1
vxfs: WRONG superblock magic 00000000 at 8
vxfs: can't find superblock.
vxfs: WRONG superblock magic 00000000 at 1
vxfs: WRONG superblock magic 00000000 at 8
vxfs: can't find superblock.
vxfs: WRONG superblock magic 00000000 at 1
vxfs: WRONG superblock magic 00000000 at 8
vxfs: can't find superblock.
VFS: unable to find oldfs superblock on device loop3
vxfs: WRONG superblock magic 00000000 at 1
vxfs: WRONG superblock magic 00000000 at 8
vxfs: can't find superblock.
REISERFS warning (device loop2): super-6502 reiserfs_getopt: unknown mount option ""
REISERFS warning (device loop2): super-6502 reiserfs_getopt: unknown mount option ""
print_req_error: I/O error, dev loop1, sector 36028797018963960
NILFS (loop1): unable to read secondary superblock (blocksize = 1024)
NILFS (loop1): couldn't find nilfs on the device
vxfs: WRONG superblock magic 00000000 at 1
REISERFS warning (device loop0): super-6502 reiserfs_getopt: unknown mount option ""
vxfs: WRONG superblock magic 00000000 at 8
vxfs: can't find superblock.
print_req_error: I/O error, dev loop1, sector 36028797018963960
NILFS (loop1): unable to read secondary superblock (blocksize = 1024)
NILFS (loop1): couldn't find nilfs on the device
vxfs: WRONG superblock magic 00000000 at 1
vxfs: WRONG superblock magic 00000000 at 8
vxfs: can't find superblock.
REISERFS warning (device loop0): super-6502 reiserfs_getopt: unknown mount option ""
Bluetooth: hci5 command 0x0405 tx timeout
vxfs: WRONG superblock magic 00000000 at 1
vxfs: WRONG superblock magic 00000000 at 8
vxfs: can't find superblock.
vxfs: WRONG superblock magic 00000000 at 1
vxfs: WRONG superblock magic 00000000 at 8
vxfs: can't find superblock.
REISERFS warning (device loop4): sh-2021 reiserfs_fill_super: can not find reiserfs on loop4
NILFS (loop1): unable to read superblock
VFS: unable to find oldfs superblock on device loop0
VFS: unable to find oldfs superblock on device loop5
REISERFS warning (device loop4): sh-2021 reiserfs_fill_super: can not find reiserfs on loop4
VFS: unable to find oldfs superblock on device loop0
NILFS (loop1): unable to read superblock
VFS: unable to find oldfs superblock on device loop5
print_req_error: I/O error, dev loop3, sector 0
hfs: unable to parse mount options
hfs: unable to parse mount options
vxfs: WRONG superblock magic 00000000 at 1
vxfs: WRONG superblock magic 00000000 at 8
vxfs: can't find superblock.
hfs: can't find a HFS filesystem on dev loop1
vxfs: WRONG superblock magic 00000000 at 1
vxfs: WRONG superblock magic 00000000 at 8
vxfs: can't find superblock.
hfs: can't find a HFS filesystem on dev loop1