INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 10576 Comm: syz-executor.4 Not tainted 4.14.307-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 register_lock_class+0x389/0x1180 kernel/locking/lockdep.c:768
 __lock_acquire+0x167/0x3f20 kernel/locking/lockdep.c:3378
 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
 flush_work+0xad/0x770 kernel/workqueue.c:2890
 __cancel_work_timer+0x321/0x460 kernel/workqueue.c:2965
 smc_close_active+0x7e2/0xbb0 net/smc/smc_close.c:207
 smc_release+0x3e1/0x5d0 net/smc/af_smc.c:131
 __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+0x5e/0xd3
RIP: 0033:0x7f0197ad9fab
RSP: 002b:00007ffe3181f030 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f0197ad9fab
RDX: 00007f019769c5f8 RSI: ffffffffffffffff RDI: 0000000000000004
RBP: 00007f0197c49980 R08: 0000000000000000 R09: 00007f019769c000
R10: 00007f019769c600 R11: 0000000000000293 R12: 0000000000053c1a
R13: 00007ffe3181f130 R14: 00007f0197c47f80 R15: 0000000000000032
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
TCP: request_sock_TCP: Possible SYN flooding on port 2. Sending cookies.  Check SNMP counters.
TCP: request_sock_TCP: Possible SYN flooding on port 2. Sending cookies.  Check SNMP counters.
TCP: request_sock_TCP: Possible SYN flooding on port 2. Sending cookies.  Check SNMP counters.
TCP: request_sock_TCP: Possible SYN flooding on port 2. Sending cookies.  Check SNMP counters.
audit: type=1326 audit(1677788749.074:4): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10780 comm="syz-executor.4" exe="/root/syz-executor.4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f0197b280f9 code=0xffff0000
audit: type=1326 audit(1677788749.144:5): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10807 comm="syz-executor.4" exe="/root/syz-executor.4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f0197b280f9 code=0xffff0000
audit: type=1326 audit(1677788750.024:6): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10854 comm="syz-executor.4" exe="/root/syz-executor.4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f0197b280f9 code=0xffff0000
audit: type=1326 audit(1677788750.884:7): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10891 comm="syz-executor.4" exe="/root/syz-executor.4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f0197b280f9 code=0xffff0000
======================================================
WARNING: the mand mount option is being deprecated and
         will be removed in v5.15!
======================================================
EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue
hfsplus: request for non-existent node 33423360 in B*Tree
hfsplus: request for non-existent node 33423360 in B*Tree
hfsplus: request for non-existent node 33423360 in B*Tree
hfsplus: request for non-existent node 33423360 in B*Tree
hfsplus: request for non-existent node 33423360 in B*Tree
hfsplus: request for non-existent node 33423360 in B*Tree
netlink: 36 bytes leftover after parsing attributes in process `syz-executor.0'.
Zero length message leads to an empty skb
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 44 bytes leftover after parsing attributes in process `syz-executor.2'.