From: Dan Carpenter <dan.carpenter@oracle.com>
To: Joerg Roedel <joerg.roedel@amd.com>
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: [patch 2/2 -resend] iommu/amd: fix type bug in flush code
Date: Wed, 27 Jun 2012 12:09:18 +0300 [thread overview]
Message-ID: <20120627090918.GT31212@elgon.mountain> (raw)
In-Reply-To: <20120627085800.GA3007@mwanda>
write_file_bool() modifies 32 bits of data, so "amd_iommu_unmap_flush"
needs to be 32 bits as well or we'll corrupt memory. Fortunately it
looks like the data is aligned with a gap after the declaration so this
is harmless in production.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
Originally sent on Fri, 2 Mar 2012. This is the other patch where I
guess I was supposed to modify debugfs_create_bool() to take bool
pointers.
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h
index 2435555..c1b1d48 100644
--- a/drivers/iommu/amd_iommu_types.h
+++ b/drivers/iommu/amd_iommu_types.h
@@ -652,7 +652,7 @@ extern unsigned long *amd_iommu_pd_alloc_bitmap;
* If true, the addresses will be flushed on unmap time, not when
* they are reused
*/
-extern bool amd_iommu_unmap_flush;
+extern u32 amd_iommu_unmap_flush;
/* Smallest number of PASIDs supported by any IOMMU in the system */
extern u32 amd_iommu_max_pasids;
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 4127b56..92b9267 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -451,7 +451,7 @@ static void amd_iommu_stats_init(void)
return;
de_fflush = debugfs_create_bool("fullflush", 0444, stats_dir,
- (u32 *)&amd_iommu_unmap_flush);
+ &amd_iommu_unmap_flush);
amd_iommu_stats_add(&compl_wait);
amd_iommu_stats_add(&cnt_map_single);
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index c04ddca..a33612f 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -129,7 +129,7 @@ u16 amd_iommu_last_bdf; /* largest PCI device id we have
to handle */
LIST_HEAD(amd_iommu_unity_map); /* a list of required unity mappings
we find in ACPI */
-bool amd_iommu_unmap_flush; /* if true, flush on every unmap */
+u32 amd_iommu_unmap_flush; /* if true, flush on every unmap */
LIST_HEAD(amd_iommu_list); /* list of all AMD IOMMUs in the
system */
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Joerg Roedel <joerg.roedel-5C7GfCeVMHo@public.gmane.org>
Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [patch 2/2 -resend] iommu/amd: fix type bug in flush code
Date: Wed, 27 Jun 2012 09:09:18 +0000 [thread overview]
Message-ID: <20120627090918.GT31212@elgon.mountain> (raw)
In-Reply-To: <20120627085800.GA3007@mwanda>
write_file_bool() modifies 32 bits of data, so "amd_iommu_unmap_flush"
needs to be 32 bits as well or we'll corrupt memory. Fortunately it
looks like the data is aligned with a gap after the declaration so this
is harmless in production.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
Originally sent on Fri, 2 Mar 2012. This is the other patch where I
guess I was supposed to modify debugfs_create_bool() to take bool
pointers.
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h
index 2435555..c1b1d48 100644
--- a/drivers/iommu/amd_iommu_types.h
+++ b/drivers/iommu/amd_iommu_types.h
@@ -652,7 +652,7 @@ extern unsigned long *amd_iommu_pd_alloc_bitmap;
* If true, the addresses will be flushed on unmap time, not when
* they are reused
*/
-extern bool amd_iommu_unmap_flush;
+extern u32 amd_iommu_unmap_flush;
/* Smallest number of PASIDs supported by any IOMMU in the system */
extern u32 amd_iommu_max_pasids;
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 4127b56..92b9267 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -451,7 +451,7 @@ static void amd_iommu_stats_init(void)
return;
de_fflush = debugfs_create_bool("fullflush", 0444, stats_dir,
- (u32 *)&amd_iommu_unmap_flush);
+ &amd_iommu_unmap_flush);
amd_iommu_stats_add(&compl_wait);
amd_iommu_stats_add(&cnt_map_single);
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index c04ddca..a33612f 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -129,7 +129,7 @@ u16 amd_iommu_last_bdf; /* largest PCI device id we have
to handle */
LIST_HEAD(amd_iommu_unity_map); /* a list of required unity mappings
we find in ACPI */
-bool amd_iommu_unmap_flush; /* if true, flush on every unmap */
+u32 amd_iommu_unmap_flush; /* if true, flush on every unmap */
LIST_HEAD(amd_iommu_list); /* list of all AMD IOMMUs in the
system */
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
To: Joerg Roedel <joerg.roedel-5C7GfCeVMHo@public.gmane.org>
Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [patch 2/2 -resend] iommu/amd: fix type bug in flush code
Date: Wed, 27 Jun 2012 12:09:18 +0300 [thread overview]
Message-ID: <20120627090918.GT31212@elgon.mountain> (raw)
In-Reply-To: <20120627085800.GA3007@mwanda>
write_file_bool() modifies 32 bits of data, so "amd_iommu_unmap_flush"
needs to be 32 bits as well or we'll corrupt memory. Fortunately it
looks like the data is aligned with a gap after the declaration so this
is harmless in production.
Signed-off-by: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
---
Originally sent on Fri, 2 Mar 2012. This is the other patch where I
guess I was supposed to modify debugfs_create_bool() to take bool
pointers.
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h
index 2435555..c1b1d48 100644
--- a/drivers/iommu/amd_iommu_types.h
+++ b/drivers/iommu/amd_iommu_types.h
@@ -652,7 +652,7 @@ extern unsigned long *amd_iommu_pd_alloc_bitmap;
* If true, the addresses will be flushed on unmap time, not when
* they are reused
*/
-extern bool amd_iommu_unmap_flush;
+extern u32 amd_iommu_unmap_flush;
/* Smallest number of PASIDs supported by any IOMMU in the system */
extern u32 amd_iommu_max_pasids;
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 4127b56..92b9267 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -451,7 +451,7 @@ static void amd_iommu_stats_init(void)
return;
de_fflush = debugfs_create_bool("fullflush", 0444, stats_dir,
- (u32 *)&amd_iommu_unmap_flush);
+ &amd_iommu_unmap_flush);
amd_iommu_stats_add(&compl_wait);
amd_iommu_stats_add(&cnt_map_single);
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index c04ddca..a33612f 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -129,7 +129,7 @@ u16 amd_iommu_last_bdf; /* largest PCI device id we have
to handle */
LIST_HEAD(amd_iommu_unity_map); /* a list of required unity mappings
we find in ACPI */
-bool amd_iommu_unmap_flush; /* if true, flush on every unmap */
+u32 amd_iommu_unmap_flush; /* if true, flush on every unmap */
LIST_HEAD(amd_iommu_list); /* list of all AMD IOMMUs in the
system */
next prev parent reply other threads:[~2012-06-27 9:09 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAA9_cmeNagC1sF54BAHa1sTzL3sMD3eKoftHQHCM5q9vKq5Dyg@mail.gmail.com>
2012-06-27 8:58 ` [Ksummit-2012-discuss] [ATTEND] Your upstream maintainer just isn't that into you Dan Carpenter
2012-06-27 8:59 ` [patch -resend] [SCSI] bfa: off by one in bfa_ioc_mbox_isr() Dan Carpenter
2012-06-27 8:59 ` Dan Carpenter
2012-06-27 17:44 ` Krishna Gudipati
2012-06-27 17:44 ` Krishna Gudipati
2012-06-27 8:59 ` [patch -resend] [SCSI] bfa: dereferencing freed memory in bfad_im_probe() Dan Carpenter
2012-06-27 8:59 ` Dan Carpenter
2012-06-27 17:45 ` Krishna Gudipati
2012-06-27 17:45 ` Krishna Gudipati
2012-06-27 9:00 ` [patch -resend] [SCSI] megaraid: remove a spurious IRQ enable Dan Carpenter
2012-06-27 9:00 ` Dan Carpenter
2012-06-27 22:36 ` adam radford
2012-06-27 22:36 ` adam radford
2012-06-27 9:00 ` [patch 1/2 -resend] SCSI: advansys: handle errors from scsi_dma_map() Dan Carpenter
2012-06-27 9:00 ` Dan Carpenter
2012-06-27 10:01 ` walter harms
2012-06-27 10:01 ` walter harms
2012-06-27 10:15 ` Dan Carpenter
2012-06-27 10:15 ` Dan Carpenter
2012-06-27 9:01 ` [patch 2/2 -resend] SCSI: advansys: use a subsystem error code Dan Carpenter
2012-06-27 9:01 ` Dan Carpenter
2012-06-27 9:01 ` [patch -resend] 9p: fix min_t() casting in p9pdu_vwritef() Dan Carpenter
2012-06-27 9:01 ` Dan Carpenter
2012-06-27 10:19 ` walter harms
2012-06-27 10:19 ` walter harms
2012-06-27 10:36 ` Dan Carpenter
2012-06-27 10:36 ` Dan Carpenter
2012-06-27 10:56 ` walter harms
2012-06-27 22:26 ` David Miller
2012-06-27 22:26 ` David Miller
2012-06-27 9:02 ` [patch -resend] spi/spidev: handle integer wrap in spidev_message() Dan Carpenter
2012-06-27 9:02 ` Dan Carpenter
2012-06-27 9:02 ` [patch -resend] mmc: ushc: fix an endianness conversion in ushc_request() Dan Carpenter
2012-06-27 9:02 ` Dan Carpenter
2012-06-27 9:03 ` [patch -resend] sgi-xp: nested calls to spin_lock_irqsave() Dan Carpenter
2012-06-27 9:03 ` Dan Carpenter
2012-06-27 9:04 ` [patch 1/3 -resend] [SCSI] pmcraid: remove unneeded check Dan Carpenter
2012-06-27 9:04 ` Dan Carpenter
2012-06-27 9:04 ` [patch 2/3 -resend] [SCSI] pmcraid: cpu_to_le32() => cpu_to_le64() Dan Carpenter
2012-06-27 9:04 ` Dan Carpenter
2012-06-27 9:04 ` [patch 3/3 -resend] [SCSI] pmcraid: find_first_zero_bit() takes bits not bytes Dan Carpenter
2012-06-27 9:04 ` Dan Carpenter
2012-06-27 9:05 ` [patch -resend] [SCSI] isci: add a couple __iomem annotations Dan Carpenter
2012-06-27 9:05 ` Dan Carpenter
2012-06-27 20:58 ` Dan Williams
2012-06-27 20:58 ` Dan Williams
2012-06-27 9:05 ` [SCSI] bfa: Implement LUN Masking feature using the SCSI Slave Callouts Dan Carpenter
2012-06-27 9:06 ` [patch -resend] NVMe: handle allocation failure in nvme_map_user_pages() Dan Carpenter
2012-06-27 9:06 ` Dan Carpenter
2012-06-27 9:06 ` [patch -resend] [media] az6007: precedence bug in az6007_i2c_xfer() Dan Carpenter
2012-06-27 9:06 ` Dan Carpenter
2012-06-27 13:11 ` Mauro Carvalho Chehab
2012-06-27 13:11 ` Mauro Carvalho Chehab
2012-06-28 19:33 ` Dan Carpenter
2012-06-28 19:33 ` Dan Carpenter
2012-06-27 9:07 ` [patch v3 -resend] edac i5000, i5400: fix pointer math in i5000_get_mc_regs() Dan Carpenter
2012-06-27 9:07 ` Dan Carpenter
2012-06-27 12:15 ` Mauro Carvalho Chehab
2012-06-27 12:15 ` Mauro Carvalho Chehab
2012-06-27 9:08 ` [patch -resend] [SCSI] megaraid: cleanup type issue in mega_build_cmd() Dan Carpenter
2012-06-27 9:08 ` Dan Carpenter
2012-06-27 22:36 ` adam radford
2012-06-27 22:36 ` adam radford
2012-06-27 9:08 ` [patch 1/2 -resend] dma-debug: debugfs_create_bool() takes a u32 pointer Dan Carpenter
2012-06-27 9:08 ` Dan Carpenter
2012-06-27 11:09 ` Neil Horman
2012-06-27 11:09 ` Neil Horman
2012-07-02 10:15 ` Joerg Roedel
2012-07-02 10:15 ` Joerg Roedel
2012-06-27 9:09 ` Dan Carpenter [this message]
2012-06-27 9:09 ` [patch 2/2 -resend] iommu/amd: fix type bug in flush code Dan Carpenter
2012-06-27 9:09 ` Dan Carpenter
2012-06-27 9:10 ` [patch -resend] isci: make function declaration match implementation Dan Carpenter
2012-06-27 9:10 ` Dan Carpenter
2012-06-27 9:10 ` [patch -resend] drm/i915/bios: cleanup return type of intel_parse_bios() Dan Carpenter
2012-06-27 9:10 ` Dan Carpenter
2012-06-27 9:10 ` [patch -resend] leds-lp5523: BUG() in error handling in probe() Dan Carpenter
2012-06-27 9:10 ` Dan Carpenter
2012-06-27 10:49 ` Bryan Wu
2012-06-27 10:49 ` Bryan Wu
2012-06-27 10:55 ` Dan Carpenter
2012-06-27 10:55 ` Dan Carpenter
2012-06-28 19:39 ` Matt Renzelmann
2012-06-28 19:39 ` Matt Renzelmann
2012-06-27 9:11 ` [patch -resend] Input: ff-memless - fix a couple min_t() casts Dan Carpenter
2012-06-27 9:11 ` Dan Carpenter
2012-07-08 1:18 ` Dmitry Torokhov
2012-07-08 1:18 ` Dmitry Torokhov
2012-06-27 9:11 ` [patch -resend] [patch] tlb_uv: remove some dead code in parse_tunables_write() Dan Carpenter
2012-06-27 9:11 ` Dan Carpenter
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