------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(1)
WARNING: CPU: 1 PID: 7591 at kernel/locking/lockdep.c:238 hlock_class kernel/locking/lockdep.c:238 [inline]
WARNING: CPU: 1 PID: 7591 at kernel/locking/lockdep.c:238 check_wait_context kernel/locking/lockdep.c:4854 [inline]
WARNING: CPU: 1 PID: 7591 at kernel/locking/lockdep.c:238 __lock_acquire+0x379/0xd20 kernel/locking/lockdep.c:5187
Modules linked in:
CPU: 1 UID: 0 PID: 7591 Comm: syz.4.62 Tainted: G        W           6.16.0-syzkaller-11699-g7e161a991ea7 #0 PREEMPT_{RT,(full)} 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:hlock_class kernel/locking/lockdep.c:238 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4854 [inline]
RIP: 0010:__lock_acquire+0x379/0xd20 kernel/locking/lockdep.c:5187
Code: eb 33 90 e8 c9 4f 17 03 85 c0 74 22 83 3d d2 12 81 0d 00 75 19 90 48 c7 c7 b3 34 21 8d 48 c7 c6 9b 29 11 8d e8 58 38 e7 ff 90 <0f> 0b 90 90 90 31 c0 48 8b 3c 24 0f b6 98 c4 00 00 00 41 8b 46 20
RSP: 0018:ffffc90004b274d0 EFLAGS: 00010046
RAX: fdc8d5cb1fe61200 RBX: ffffe8ffffc7cc98 RCX: ffff888024265940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000001ef2 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1017124863 R12: 0000000000008000
R13: 0000000000000000 R14: ffff888024266460 R15: ffff888024266460
FS:  00007f656e37e6c0(0000) GS:ffff8881269cd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f86443d9368 CR3: 0000000042ce2000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
 __rt_spin_trylock kernel/locking/spinlock_rt.c:109 [inline]
 rt_spin_trylock+0xea/0x180 kernel/locking/spinlock_rt.c:118
 spin_lock_irqsave_sdp_contention kernel/rcu/srcutree.c:375 [inline]
 srcu_gp_start_if_needed+0x24a/0x10b0 kernel/rcu/srcutree.c:1277
 __call_srcu kernel/rcu/srcutree.c:1391 [inline]
 __synchronize_srcu+0x2fa/0x390 kernel/rcu/srcutree.c:1443
 bch2_fs_btree_iter_exit+0x3f9/0x490 fs/bcachefs/btree_iter.c:3750
 __bch2_fs_free fs/bcachefs/super.c:617 [inline]
 bch2_fs_release+0x2ab/0x830 fs/bcachefs/super.c:667
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x22b/0x480 lib/kobject.c:737
 bch2_fs_get_tree+0xb6e/0x1520 fs/bcachefs/fs.c:2604
 vfs_get_tree+0x92/0x2b0 fs/super.c:1815
 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3805
 do_mount fs/namespace.c:4133 [inline]
 __do_sys_mount fs/namespace.c:4344 [inline]
 __se_sys_mount+0x317/0x410 fs/namespace.c:4321
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f656f101fea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f656e37de88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f656e37df10 RCX: 00007f656f101fea
RDX: 00000000200058c0 RSI: 0000000020005900 RDI: 00007f656e37ded0
RBP: 00000000200058c0 R08: 00007f656e37df10 R09: 0000000000010000
R10: 0000000000010000 R11: 0000000000000246 R12: 0000000020005900
R13: 00007f656e37ded0 R14: 00000000000058b4 R15: 0000000020000480
 </TASK>