============================================
WARNING: possible recursive locking detected
6.9.0-syzkaller-08570-g95348e463eab #0 Not tainted
--------------------------------------------
syz-executor.1/5908 is trying to acquire lock:
ffff8880449c4a20 (&stab->lock){+.-.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]
ffff8880449c4a20 (&stab->lock){+.-.}-{2:2}, at: __sock_map_delete net/core/sock_map.c:429 [inline]
ffff8880449c4a20 (&stab->lock){+.-.}-{2:2}, at: sock_map_delete_elem+0x175/0x250 net/core/sock_map.c:461

but task is already holding lock:
ffff888045ed2220 (&stab->lock){+.-.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]
ffff888045ed2220 (&stab->lock){+.-.}-{2:2}, at: __sock_map_delete net/core/sock_map.c:429 [inline]
ffff888045ed2220 (&stab->lock){+.-.}-{2:2}, at: sock_map_delete_elem+0x175/0x250 net/core/sock_map.c:461

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&stab->lock);
  lock(&stab->lock);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

9 locks held by syz-executor.1/5908:
 #0: ffff88802f7ee420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
 #1: ffff888074b36800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
 #1: ffff888074b36800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: do_truncate+0x20c/0x310 fs/open.c:63
 #2: ffff888074b369a0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:836 [inline]
 #2: ffff888074b369a0 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_setattr+0xf35/0x1bb0 fs/ext4/inode.c:5378
 #3: ffff88802f36a950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x203f/0x22a0 fs/jbd2/transaction.c:463
 #4: ffff888074b36688 (&ei->i_data_sem){++++}-{3:3}, at: ext4_truncate+0x991/0x1180 fs/ext4/inode.c:4141
 #5: ffffffff8e333d20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 #5: ffffffff8e333d20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
 #5: ffffffff8e333d20 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2402 [inline]
 #5: ffffffff8e333d20 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run6+0x2a5/0x600 kernel/trace/bpf_trace.c:2448
 #6: ffff888045ed2220 (&stab->lock){+.-.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]
 #6: ffff888045ed2220 (&stab->lock){+.-.}-{2:2}, at: __sock_map_delete net/core/sock_map.c:429 [inline]
 #6: ffff888045ed2220 (&stab->lock){+.-.}-{2:2}, at: sock_map_delete_elem+0x175/0x250 net/core/sock_map.c:461
 #7: ffff88806167e2b0 (&psock->link_lock){+...}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]
 #7: ffff88806167e2b0 (&psock->link_lock){+...}-{2:2}, at: sock_map_del_link net/core/sock_map.c:157 [inline]
 #7: ffff88806167e2b0 (&psock->link_lock){+...}-{2:2}, at: sock_map_unref+0xcc/0x5e0 net/core/sock_map.c:192
 #8: ffffffff8e333d20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 #8: ffffffff8e333d20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
 #8: ffffffff8e333d20 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2402 [inline]
 #8: ffffffff8e333d20 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x1fc/0x540 kernel/trace/bpf_trace.c:2444

stack backtrace:
CPU: 1 PID: 5908 Comm: syz-executor.1 Not tainted 6.9.0-syzkaller-08570-g95348e463eab #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 check_deadlock kernel/locking/lockdep.c:3062 [inline]
 validate_chain+0x15c1/0x58e0 kernel/locking/lockdep.c:3856
 __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178