syz-executor.3 (9690) used greatest stack depth: 23792 bytes left
IPVS: ftp: loaded support on port[0] = 21
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 9765 Comm: syz-executor.4 Not tainted 4.19.172-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/0x2ef 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:2834
 skb_queue_purge+0x21/0x30 net/core/skbuff.c:2872
 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: 0033:0x465b09
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb8f728b188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffffc RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 000000000000000e RSI: 0000000020000040 RDI: 0000000000000005
RBP: 00000000004b069f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffcce4af53f R14: 00007fb8f728b300 R15: 0000000000022000
IPVS: ftp: loaded support on port[0] = 21
EXT4-fs (loop0): Unrecognized mount option "i_versizytime" or missing value
EXT4-fs (loop0): Unrecognized mount option "i_versizytime" or missing value
Bluetooth: hci5: command 0x0405 tx timeout
netlink: 14 bytes leftover after parsing attributes in process `syz-executor.3'.
XFS (loop0): Invalid superblock magic number
bridge0: port 2(bridge_slave_1) entered disabled state
bridge0: port 1(bridge_slave_0) entered disabled state
device bridge0 entered promiscuous mode
netlink: 14 bytes leftover after parsing attributes in process `syz-executor.3'.
bridge0: port 2(bridge_slave_1) entered blocking state
bridge0: port 2(bridge_slave_1) entered forwarding state
bridge0: port 1(bridge_slave_0) entered blocking state
bridge0: port 1(bridge_slave_0) entered forwarding state
device bridge0 left promiscuous mode
XFS (loop0): Invalid superblock magic number
IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready
bridge0: port 2(bridge_slave_1) entered disabled state
bridge0: port 1(bridge_slave_0) entered disabled state
device bridge0 entered promiscuous mode
syz-executor.3 (9996) used greatest stack depth: 23640 bytes left
XFS (loop0): Invalid superblock magic number
netlink: 14 bytes leftover after parsing attributes in process `syz-executor.3'.
IPVS: ftp: loaded support on port[0] = 21
bridge0: port 2(bridge_slave_1) entered blocking state
bridge0: port 2(bridge_slave_1) entered forwarding state
bridge0: port 1(bridge_slave_0) entered blocking state
bridge0: port 1(bridge_slave_0) entered forwarding state
device bridge0 left promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready
XFS (loop0): Invalid superblock magic number
syz-executor.1 (10075) used greatest stack depth: 23568 bytes left
IPVS: ftp: loaded support on port[0] = 21
netlink: 14 bytes leftover after parsing attributes in process `syz-executor.3'.
bridge0: port 2(bridge_slave_1) entered disabled state
bridge0: port 1(bridge_slave_0) entered disabled state
XFS (loop0): Invalid superblock magic number
device bridge0 entered promiscuous mode
netlink: 14 bytes leftover after parsing attributes in process `syz-executor.3'.
IPVS: ftp: loaded support on port[0] = 21
bridge0: port 2(bridge_slave_1) entered blocking state
bridge0: port 2(bridge_slave_1) entered forwarding state
bridge0: port 1(bridge_slave_0) entered blocking state
bridge0: port 1(bridge_slave_0) entered forwarding state
device bridge0 left promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready
bridge0: port 2(bridge_slave_1) entered disabled state
bridge0: port 1(bridge_slave_0) entered disabled state
device bridge0 entered promiscuous mode
XFS (loop0): Invalid superblock magic number
XFS (loop0): Invalid superblock magic number