------------[ cut here ]------------
btree trans held srcu lock (delaying memory reclaim) for 34 seconds
WARNING: CPU: 0 PID: 21395 at fs/bcachefs/btree_iter.c:3276 bch2_trans_srcu_unlock+0x50d/0x620
Modules linked in:
CPU: 0 UID: 0 PID: 21395 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:bch2_trans_srcu_unlock+0x50d/0x620
Code: 7d 00 49 c1 ef 02 48 b9 c3 f5 28 5c 8f c2 f5 28 4c 89 f8 48 f7 e1 48 c1 ea 02 48 c7 c7 20 b9 d3 8b 48 89 d6 e8 c4 e5 59 fd 90 <0f> 0b 90 90 e9 a6 fe ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 1c fb ff
RSP: 0018:ffffc9000380f218 EFLAGS: 00010246
RAX: 43cc405c5bbbdb00 RBX: 1ffff11025af2809 RCX: ffff88801f809cc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 1ffff11025af2811 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa1f4 R12: ffff88812d794046
R13: ffff88812d794088 R14: 1ffff11025af2808 R15: 0000000000000357
FS:  000055558e203500(0000) GS:ffff8880b8615000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000f000 CR3: 0000000122a58000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 bch2_trans_begin+0x1b3b/0x2310
 bch2_btree_write_buffer_flush_locked+0x26ad/0x4dd0
 btree_write_buffer_flush_seq+0x18c7/0x1a40
 bch2_btree_write_buffer_flush_going_ro+0xdb/0x130
 __bch2_fs_read_only+0x127/0x5b0
 bch2_fs_read_only+0x42a/0xb00
 __bch2_fs_stop+0x100/0x900
 generic_shutdown_super+0x135/0x2c0
 bch2_kill_sb+0x41/0x50
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x425/0x4c0
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff9ba98ff17
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc175a2f88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007ff9baa11c05 RCX: 00007ff9ba98ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc175a3040
RBP: 00007ffc175a3040 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc175a40d0
R13: 00007ff9baa11c05 R14: 00000000000cd2a8 R15: 00007ffc175a4110
 </TASK>
