6a91557e4c
Do a couple things here: - Split the mega-patches into individual patches. Should help with rebasing. - Make all patches 'git am' acceptable. There should be no functional or actual code differences from before
39 lines
1.1 KiB
Diff
39 lines
1.1 KiB
Diff
From 26fcec7a2c92ad6d31d858d2bd357511ab79ea7c Mon Sep 17 00:00:00 2001
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From: "kernel-team@fedoraproject.org" <kernel-team@fedoraproject.org>
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Date: Fri, 10 Feb 2012 14:56:13 -0500
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Subject: [PATCH] scsi: sd_revalidate_disk prevent NULL ptr deref
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Bugzilla: 754518
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Upstream-status: Fedora mustard (might be worth dropping...)
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---
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drivers/scsi/sd.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
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index 2c2041ca4b70..e10812d985af 100644
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--- a/drivers/scsi/sd.c
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+++ b/drivers/scsi/sd.c
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@@ -2749,13 +2749,18 @@ static int sd_try_extended_inquiry(struct scsi_device *sdp)
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static int sd_revalidate_disk(struct gendisk *disk)
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{
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struct scsi_disk *sdkp = scsi_disk(disk);
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- struct scsi_device *sdp = sdkp->device;
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+ struct scsi_device *sdp;
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unsigned char *buffer;
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unsigned int max_xfer;
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SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp,
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"sd_revalidate_disk\n"));
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+ if (WARN_ONCE((!sdkp), "Invalid scsi_disk from %p\n", disk))
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+ goto out;
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+
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+ sdp = sdkp->device;
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+
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/*
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* If the device is offline, don't try and read capacity or any
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* of the other niceties.
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--
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1.9.3
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