syzbot

    bucket size            256
    available              6:248
    discard_idx            0
    dirty_ondisk           0 (seq 14)
    dirty_idx              0 (seq 14)
    cur_idx                0 (seq 14)
  replicas want 1 need 1
------------[ cut here ]------------
btree trans held srcu lock (delaying memory reclaim) for 31 seconds
WARNING: CPU: 0 PID: 5831 at fs/bcachefs/btree_iter.c:3176 check_srcu_held_too_long fs/bcachefs/btree_iter.c:3174 [inline]
WARNING: CPU: 0 PID: 5831 at fs/bcachefs/btree_iter.c:3176 bch2_trans_srcu_unlock+0x522/0x5c0 fs/bcachefs/btree_iter.c:3190
Modules linked in:
CPU: 0 UID: 0 PID: 5831 Comm: syz-executor715 Not tainted 6.15.0-rc3-syzkaller-00001-g9d7a0577c9db #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:check_srcu_held_too_long fs/bcachefs/btree_iter.c:3174 [inline]
RIP: 0010:bch2_trans_srcu_unlock+0x522/0x5c0 fs/bcachefs/btree_iter.c:3190
Code: 2b 3e 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 c5 92 8c 48 89 d6 e8 ff 00 2b fd 90 <0f> 0b 90 90 49 89 df e9 ae fe ff ff 44 89 e9 80 e1 07 fe c1 38 c1
RSP: 0018:ffffc90003def640 EFLAGS: 00010246
RAX: 7b52d2a6cb069a00 RBX: 1ffff1100ff52808 RCX: ffff888030220000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000ffffafb8 R08: ffffffff81821792 R09: 1ffff110170c47d2
R10: dffffc0000000000 R11: ffffed10170c47d3 R12: 1ffff1100ff52811
R13: ffff88807fa94042 R14: ffff88807fa94088 R15: 0000000000000319
FS:  0000555569b70380(0000) GS:ffff888124fcf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056148f19b0b8 CR3: 000000007f4ca000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_trans_begin+0x1860/0x1d30 fs/bcachefs/btree_iter.c:3267
 __bch2_create+0x426/0xf40 fs/bcachefs/fs.c:554
 bch2_symlink+0x13d/0x320 fs/bcachefs/fs.c:853
 vfs_symlink+0x137/0x2e0 fs/namei.c:4723
 do_symlinkat+0x228/0x3d0 fs/namei.c:4749
 __do_sys_symlink fs/namei.c:4770 [inline]
 __se_sys_symlink fs/namei.c:4768 [inline]
 __x64_sys_symlink+0x7a/0x90 fs/namei.c:4768
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1f10a02b99
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd49fb6198 EFLAGS: 00000246 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1f10a02b99
RDX: 00007f1f10a02b99 RSI: 00002000000002c0 RDI: 0000200000000580
RBP: 00007f1f10a855f0 R08: 0000555569b714c0 R09: 0000555569b714c0
R10: 000000000000f624 R11: 0000000000000246 R12: 00007ffd49fb61c0
R13: 00007ffd49fb63e8 R14: 431bde82d7b634db R15: 00007f1f10a4b03b
 </TASK>