------------[ cut here ]------------
CPU 1 old state 2 new state 1
WARNING: CPU: 1 PID: 17075 at kernel/rcu/srcutree.c:702 srcu_check_nmi_safety+0x10e/0x130 kernel/rcu/srcutree.c:702
Modules linked in:
CPU: 1 PID: 17075 Comm: bch-copygc/loop Not tainted 6.9.0-rc6-syzkaller-00227-g3d25a941ea50 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:srcu_check_nmi_safety+0x10e/0x130 kernel/rcu/srcutree.c:702
Code: c0 74 11 3c 03 7f 0d 89 54 24 04 e8 8c 9e 76 00 8b 54 24 04 8b b3 c8 01 00 00 44 89 e1 48 c7 c7 e0 40 0e 8b e8 23 c4 dc ff 90 <0f> 0b 90 90 e9 7b ff ff ff e8 64 9e 76 00 e9 65 ff ff ff e8 8a 9e
RSP: 0018:ffffc90002ac7ab0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffffe8ffad3bfb40 RCX: ffffffff815139f9
RDX: ffff8880187d2440 RSI: ffffffff81513a06 RDI: 0000000000000001
RBP: ffff888051584240 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: ffff888051580000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88802c300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000030128000 CR3: 0000000026e22000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 srcu_read_lock include/linux/srcu.h:213 [inline]
 __bch2_trans_get+0x901/0xeb0 fs/bcachefs/btree_iter.c:3069
 bch2_moving_ctxt_init+0x5f/0x460 fs/bcachefs/move.c:242
 bch2_copygc_thread+0x169/0xb70 fs/bcachefs/movinggc.c:329
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>