linux-kernel - Re: [syzbot] [PATCH] bcachefs: WARNING in bch2_trans_srcu

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Message-ID: <000000000000b85b3a061df2cbd0@google.com>
Date: Tue, 23 Jul 2024 16:48:17 -0700
From: syzbot <syzbot+1e515cab343dbe5aa38a@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [PATCH] bcachefs: WARNING in bch2_trans_srcu_unlock

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linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com.

***

Subject: [PATCH] bcachefs: WARNING in bch2_trans_srcu_unlock
Author: cam.alvarez.i@...il.com

#syz test

bch2_extent_fallocate should not return -BCH_ERR_transaction_restart_nested when there are no buckets available.
Returning -BCH_ERR_transaction_restart_nested causes the sector allocation to retry even if there's no space available.

Signed-off-by: Camila Alvarez <cam.alvarez.i@...il.com>
---
 fs/bcachefs/io_misc.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/fs/bcachefs/io_misc.c b/fs/bcachefs/io_misc.c
index 82f9170dab3f..b5b92ef030df 100644
--- a/fs/bcachefs/io_misc.c
+++ b/fs/bcachefs/io_misc.c
@@ -90,8 +90,6 @@ int bch2_extent_fallocate(struct btree_trans *trans,
 				opts.data_replicas,
 				opts.data_replicas,
 				BCH_WATERMARK_normal, 0, &cl, &wp);
-		if (bch2_err_matches(ret, BCH_ERR_operation_blocked))
-			ret = -BCH_ERR_transaction_restart_nested;
 		if (ret)
 			goto err;
 
-- 
2.34.1