netlink: 48 bytes leftover after parsing attributes in process `syz-executor.3'.
INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 0 PID: 11200 Comm: syz-executor.4 Not tainted 4.19.190-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:728 [inline]
 register_lock_class+0xe82/0x11c0 kernel/locking/lockdep.c:754
 __lock_acquire+0x17d/0x3ff0 kernel/locking/lockdep.c:3304
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
 __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
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167
 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: 0033:0x41940b
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007ffdb943c140 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 000000000041940b
RDX: ffffffffffffffbc RSI: 0000000008c9f4bf RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2f522140
R10: 00007ffdb943c230 R11: 0000000000000293 R12: 000000000003aed2
R13: 00000000000003e8 R14: 000000000056bf60 R15: 000000000003aebc
FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.0'.
FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.0'.
FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
kvm [11326]: vcpu0, guest rIP: 0xfff0 disabled perfctr wrmsr: 0xc2 data 0x3ad6e37883b8e6ec
kvm [11326]: vcpu0, guest rIP: 0xfff0 disabled perfctr wrmsr: 0xc2 data 0x3ad6e37883b8e6ec
overlayfs: conflicting lowerdir path
netlink: 'syz-executor.2': attribute type 1 has an invalid length.
bond1: Enslaving gretap1 as a backup interface with an up link
overlayfs: conflicting lowerdir path
bond1 (unregistering): Releasing backup interface gretap1
audit: type=1804 audit(1620388942.497:7): pid=11412 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir260451375/syzkaller.phYYvN/45/bus" dev="sda1" ino=14121 res=1
audit: type=1804 audit(1620388942.497:8): pid=11412 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir260451375/syzkaller.phYYvN/45/bus" dev="sda1" ino=14121 res=1
overlayfs: conflicting lowerdir path
overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
bond1 (unregistering): Released all slaves
netlink: 'syz-executor.2': attribute type 1 has an invalid length.
bond1 (unregistering): Released all slaves
overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
overlayfs: conflicting lowerdir path
overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
overlayfs: conflicting lowerdir path
overlayfs: conflicting lowerdir path
kvm: vcpu 0: requested 128 ns lapic timer period limited to 200000 ns
kvm: vcpu 0: requested 128 ns lapic timer period limited to 200000 ns
kvm: vcpu 0: requested 128 ns lapic timer period limited to 200000 ns