linux-kernel - Re: kernel BUG at drivers/ide/ide-disk.c:187 (2.6.31)

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Message-Id: <20091001.115310.100974682.davem@davemloft.net>
Date:	Thu, 01 Oct 2009 11:53:10 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	manty@...ty.net
Cc:	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: kernel BUG at drivers/ide/ide-disk.c:187 (2.6.31)

From: David Miller <davem@...emloft.net>
Date: Thu, 01 Oct 2009 11:47:55 -0700 (PDT)

> Please add this test patch and let us know what messages
> you end up with in the logs.  It won't BUG() any more,
> so you have to watch for the messages.

Sorry, there's a small bug in the test patch, please use this one
instead.

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 7f87801..6e0dfa9 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -184,7 +184,12 @@ static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 	ide_hwif_t *hwif = drive->hwif;
 
 	BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED);
-	BUG_ON(!blk_fs_request(rq));
+	if (!blk_fs_request(rq)) {
+		pr_alert("IDE: Non-FS req in ide_do_rw_disk(), cmd_type %d\n",
+			 rq->cmd_type);
+		ide_kill_rq(drive, rq);
+		return ide_stopped;
+	}
 
 	ledtrig_ide_activity();
 
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