INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 0 PID: 13088 Comm: syz-executor.3 Not tainted 4.14.232-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: 0033:0x41940b RSP: 002b:00007ffd6b5a5cd0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 000000000041940b RDX: 00000000005713f8 RSI: 0000000000000081 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00000000005713f8 R13: 00007ffd6b5a5df0 R14: 000000000056bf60 R15: 00000000000375e8 MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 48 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. MINIX-fs: mounting unchecked file system, running fsck is recommended netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 48 bytes leftover after parsing attributes in process `syz-executor.1'. EXT4-fs warning: 9 callbacks suppressed EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 48 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 48 bytes leftover after parsing attributes in process `syz-executor.0'. EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended netlink: 24 bytes leftover after parsing attributes in process `syz-executor.0'. MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. print_req_error: I/O error, dev loop5, sector 0 MINIX-fs: mounting unchecked file system, running fsck is recommended print_req_error: I/O error, dev loop5, sector 0 EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. Bluetooth: hci5 command 0x0405 tx timeout EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. print_req_error: I/O error, dev loop5, sector 0 EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. print_req_error: I/O error, dev loop4, sector 0 Unable to read inode block EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. print_req_error: I/O error, dev loop4, sector 0 MINIX-fs: get root inode failed Unable to read inode block MINIX-fs: get root inode failed EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. Unable to read inode block MINIX-fs: get root inode failed Unable to read inode block MINIX-fs: get root inode failed Unable to read inode block MINIX-fs: get root inode failed print_req_error: I/O error, dev loop4, sector 0 Buffer I/O error on dev loop4, logical block 0, async page read Unable to read inode block MINIX-fs: get root inode failed Unable to read inode block MINIX-fs: get root inode failed Unable to read inode block MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed Unable to read inode block MINIX-fs: get root inode failed print_req_error: I/O error, dev loop4, sector 0 Buffer I/O error on dev loop4, logical block 0, async page read Unable to read inode block MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed MINIX-fs: get root inode failed nla_parse: 43 callbacks suppressed netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. MINIX-fs: deleted inode referenced: 1 Unable to read inode block MINIX-fs: get root inode failed MINIX-fs: get root inode failed netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. EXT4-fs warning: 5 callbacks suppressed EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. Unable to read inode block EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. MINIX-fs: get root inode failed print_req_error: I/O error, dev loop5, sector 0 Buffer I/O error on dev loop5, logical block 0, async page read print_req_error: I/O error, dev loop4, sector 0 Buffer I/O error on dev loop4, logical block 0, async page read MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. MINIX-fs: deleted inode referenced: 1 EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. print_req_error: I/O error, dev loop5, sector 0 Buffer I/O error on dev loop5, logical block 0, async page read EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed EXT4-fs warning (device sda1): ext4_ioctl:716: Setting inode version is not supported with metadata_csum enabled. print_req_error: I/O error, dev loop5, sector 0 Buffer I/O error on dev loop5, logical block 0, async page read MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed Bluetooth: hci5 command 0x0405 tx timeout MINIX-fs: deleted inode referenced: 1 MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed MINIX-fs: deleted inode referenced: 1 MINIX-fs: get root inode failed