INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 9955 Comm: syz-executor.5 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
Zero length message leads to an empty skb
 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: 0033:0x7f82f71f2fab
RSP: 002b:00007ffdc637cc10 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 00007f82f71f2fab
RDX: 0000000000000000 RSI: 0000001b2de2586c RDI: 0000000000000005
RBP: 00007f82f7362980 R08: 0000000000000000 R09: 000000009b668c7f
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000004258e
R13: 00007ffdc637cd10 R14: 00007ffdc637cd30 R15: 0000000000000032
netlink: 64 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 28 bytes leftover after parsing attributes in process `syz-executor.5'.
Cannot find set identified by id 0 to match
print_req_error: I/O error, dev loop5, sector 0
netlink: 28 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 28 bytes leftover after parsing attributes in process `syz-executor.5'.
print_req_error: I/O error, dev loop5, sector 0
BTRFS: device fsid d552757d-9c39-40e3-95f0-16d819589928 devid 1 transid 8 /dev/loop0
BTRFS error (device loop0): unsupported checksum algorithm 2
BTRFS error (device loop0): superblock checksum mismatch
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
BTRFS error (device loop0): open_ctree failed
netlink: 28 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
x_tables: ip6_tables: rpfilter match: used from hooks PREROUTING/OUTPUT, but only valid from PREROUTING
ip6_tables: ip6tables: counters copy to user failed while replacing table
audit: type=1804 audit(1677635672.585:2): pid=10749 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.3" name="/root/syzkaller-testdir2581491726/syzkaller.LKDLV7/67/cgroup.controllers" dev="sda1" ino=14060 res=1
audit: type=1804 audit(1677635672.675:3): pid=10749 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.3" name="/root/syzkaller-testdir2581491726/syzkaller.LKDLV7/67/memory.events" dev="sda1" ino=14010 res=1