After much stuffing around I managed to get a stack trace related to
the change near the problem:
Aug 4 06:20:13 azza kernel: [ 12.680555] end_request: I/O error,
dev sr1, sector 0
Aug 4 06:20:13 azza kernel: [ 12.685541] sr 6:0:0:0: [sr1]
Unhandled sense code
Aug 4 06:20:13 azza kernel: [ 12.686984] sr 6:0:0:0: [sr1] Result:
hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 4 06:20:13 azza kernel: [ 12.688417] sr 6:0:0:0: [sr1] Sense
Key : Blank Check [current]
Aug 4 06:20:13 azza kernel: [ 12.689842] sr 6:0:0:0: [sr1] Add.
Sense: No additional sense information
Aug 4 06:20:13 azza kernel: [ 12.691269] sr 6:0:0:0: [sr1] CDB:
Read(10): 28 00 00 00 00 00 00 00 01 00
Aug 4 06:20:13 azza kernel: [ 12.692729] end_request: I/O error,
dev sr1, sector 0
Aug 4 06:20:13 azza kernel: [ 13.014699] EXT3-fs (md10): using
internal journal
Aug 4 06:20:13 azza kernel: [ 13.140807] dump_bug_752881() -
disk_max_parts(disk)=256, (disk->flags & GENHD_FL_NO_PART_SCAN)=0x200
Aug 4 06:20:13 azza kernel: [ 13.142307] Pid: 1123, comm: modprobe
Not tainted 3.2.0-amw-fix3+ #1
Aug 4 06:20:13 azza kernel: [ 13.143797] Call Trace:
Aug 4 06:20:13 azza kernel: [ 13.145303] [<ffffffff8119abce>] ?
dump_bug_752881+0x4e/0x6a
Aug 4 06:20:13 azza kernel: [ 13.146771] [<ffffffff8119ac85>] ?
register_disk+0x9b/0x133
Aug 4 06:20:13 azza kernel: [ 13.148239] [<ffffffff8119995b>] ?
blk_register_region+0x22/0x27
Aug 4 06:20:13 azza kernel: [ 13.149700] [<ffffffff8119add2>] ?
add_disk+0xb5/0x27f
Aug 4 06:20:13 azza kernel: [ 13.151148] [<ffffffffa03af843>] ?
loop_add+0x1c9/0x1f5 [loop]
Aug 4 06:20:13 azza kernel: [ 13.152593] [<ffffffff81039613>] ?
should_resched+0x5/0x23
Aug 4 06:20:13 azza kernel: [ 13.154028] [<ffffffffa03b6101>] ?
loop_init+0x101/0x1000 [loop]
Aug 4 06:20:13 azza kernel: [ 13.155472] [<ffffffffa03b6000>] ?
0xffffffffa03b5fff
Aug 4 06:20:13 azza kernel: [ 13.156907] [<ffffffff81002085>] ?
do_one_initcall+0x75/0x12c
Aug 4 06:20:13 azza kernel: [ 13.158350] [<ffffffffa03b6000>] ?
0xffffffffa03b5fff
Aug 4 06:20:13 azza kernel: [ 13.159769] [<ffffffff81073b04>] ?
sys_init_module+0x109/0x25b
Aug 4 06:20:13 azza kernel: [ 13.161185] [<ffffffff813464d2>] ?
system_call_fastpath+0x16/0x1b
Aug 4 06:20:13 azza kernel: [ 13.162810] dump_bug_752881() -
disk_max_parts(disk)=256, (disk->flags & GENHD_FL_NO_PART_SCAN)=0x200
Aug 4 06:20:13 azza kernel: [ 13.164301] Pid: 1123, comm: modprobe
Not tainted 3.2.0-amw-fix3+ #1
Aug
This is the patch and it was run with the fix disabled and stack
tracing enabled (
diff --git a/block/genhd.c b/block/genhd.c
index 02e9fca..43d783a 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1798,3 +1798,29 @@ static void disk_release_events(struct gendisk *disk)
WARN_ON_ONCE(disk->ev && disk->ev->block != 1);
kfree(disk->ev);
}
+
+
+int bug_752881_dbg;
+static int __init set_bug_752881_dbg(char *s)
+{
+ set_bug_752881_dbg = simple_strtoul(s, NULL, 0);
+
+ return 1;
+}
+__setup("bug_752881_dbg=", set_bug_752881_dbg);
+
+#define BUG_DUMP_STK 1
+#define BUG_GOOD_CODE 2
+
+int dump_bug_752881(struct gendisk *disk)
+{
+ if (disk_max_parts(disk) <= 1)
+ return 0;
+ if (bug_752881_dbg & BUG_DUMP_STK) {
+ printk("%s() - disk_max_parts(disk)=%d, (disk->flags &
GENHD_FL_NO_PART_SCAN)=%#x\n",
+ __func__, disk_max_parts(disk), (disk->flags &
GENHD_FL_NO_PART_SCAN));
+ }
+ if (bug_752881_dbg & BUG_GOOD_CODE)
+ return 1;
+ return !(disk->flags & GENHD_FL_NO_PART_SCAN);
+}
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 6d18f35..be3ad96 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -237,8 +237,13 @@ static inline int disk_max_parts(struct gendisk *disk)
static inline bool disk_part_scan_enabled(struct gendisk *disk)
{
+#if 0
return disk_max_parts(disk) > 1 &&
!(disk->flags & GENHD_FL_NO_PART_SCAN);
+#else
+ extern int dump_bug_752881(struct gendisk *disk);
+ return dump_bug_752881(disk);
+#endif
}
static inline dev_t disk_devt(struct gendisk *disk)
I also suspect that having a blank bluRay in the tray which gives
media errors is important?
Aug 4 06:15:51 azza kernel: [ 3.793076] generic-usb
0003:1267:0201.0001: input,hidraw0: USB HID v1.00 Mouse [USB Mouse] on
usb-0000:00:1a.1-1/input0
Aug 4 06:15:51 azza kernel: [ 3.795362] sdb: sdb1 sdb2 sdb3 sdb4
Aug 4 06:15:51 azza kernel: [ 3.795721] sd 4:0:0:0: [sdb] Attached SCSI disk
Aug 4 06:15:51 azza kernel: [ 3.797081] input: Dell Dell Smart
Card Reader Keyboard as
/devices/pci0000:00/0000:00:1a.2/usb8/8-1/8-1:1.0/input/input1
Aug 4 06:15:51 azza kernel: [ 3.797196] generic-usb
0003:413C:2101.0002: input,hidraw1: USB HID v1.11 Keyboard [Dell Dell
Smart Card Reader Keyboard] on usb-0000:00:1a.2-1/input0
Aug 4 06:15:51 azza kernel: [ 3.797286] usbcore: registered new
interface driver usbhid
Aug 4 06:15:51 azza kernel: [ 3.797331] usbhid: USB HID core driver
Aug 4 06:15:51 azza kernel: [ 3.798294] sd 2:0:0:0: Attached scsi
generic sg0 type 0
Aug 4 06:15:51 azza kernel: [ 3.798375] sr 3:0:0:0: Attached scsi
generic sg1 type 5
Aug 4 06:15:51 azza kernel: [ 3.798453] sd 4:0:0:0: Attached scsi
generic sg2 type 0
Aug 4 06:15:51 azza kernel: [ 3.798530] sd 5:0:0:0: Attached scsi
generic sg3 type 0
Aug 4 06:15:51 azza kernel: [ 3.798657] scsi 6:0:0:0: Attached
scsi generic sg4 type 5
Aug 4 06:15:51 azza kernel: [ 3.801325] sr0: scsi3-mmc drive:
12x/12x writer dvd-ram cd/rw xa/form2 cdda tray
Aug 4 06:15:51 azza kernel: [ 3.801389] cdrom: Uniform CD-ROM
driver Revision: 3.20
Aug 4 06:15:51 azza kernel: [ 3.801572] sr 3:0:0:0: Attached scsi CD-ROM sr0
Aug 4 06:15:51 azza kernel: [ 3.811188] sr1: scsi3-mmc drive:
255x/255x writer dvd-ram cd/rw xa/form2 cdda tray
Aug 4 06:15:51 azza kernel: [ 3.811362] sr 6:0:0:0: Attached scsi CD-ROM sr1
Aug 4 06:15:51 azza kernel: [ 3.824191] sr1: CDROM (ioctl) error,
command: Read TOC/PMA/ATIP 43 00 00 00 00 00 00 00 0c 40
Aug 4 06:15:51 azza kernel: [ 3.824470] sr: Sense Key : Medium
Error [current]
Aug 4 06:15:51 azza kernel: [ 3.824560] sr: Add. Sense: Unable to
recover table-of-contents
Aug 4 06:15:51 azza kernel: [ 3.832212] sr1: CDROM (ioctl) error,
command: Read TOC/PMA/ATIP 43 00 00 00 00 00 00 00 0c 00
Aug 4 06:15:51 azza kernel: [ 3.832488] sr: Sense Key : Medium
Error [current]
Aug 4 06:15:51 azza kernel: [ 3.832578] sr: Add. Sense: Unable to
recover table-of-contents
Aug 4 06:15:51 azza kernel: [ 3.793076] generic-usb 0003:1267:0201.0001:
input,hidraw0: USB HID v1.00 Mouse [USB Mouse] on usb-0000:00:1a.1-1/input0
Aug 4 06:15:51 azza kernel: [ 3.795362] sdb: sdb1 sdb2 sdb3 sdb4
Aug 4 06:15:51 azza kernel: [ 3.795721] sd 4:0:0:0: [sdb] Attached SCSI disk
Aug 4 06:15:51 azza kernel: [ 3.797081] input: Dell Dell Smart Card Reader
Keyboard as /devices/pci0000:00/0000:00:1a.2/usb8/8-1/8-1:1.0/input/input1
Aug 4 06:15:51 azza kernel: [ 3.797196] generic-usb 0003:413C:2101.0002:
input,hidraw1: USB HID v1.11 Keyboard [Dell Dell Smart Card Reader Keyboard] on
usb-0000:00:1a.2-1/input0
Aug 4 06:15:51 azza kernel: [ 3.797286] usbcore: registered new interface
driver usbhid
Aug 4 06:15:51 azza kernel: [ 3.797331] usbhid: USB HID core driver
Aug 4 06:15:51 azza kernel: [ 3.798294] sd 2:0:0:0: Attached scsi generic
sg0 type 0
Aug 4 06:15:51 azza kernel: [ 3.798375] sr 3:0:0:0: Attached scsi generic
sg1 type 5
Aug 4 06:15:51 azza kernel: [ 3.798453] sd 4:0:0:0: Attached scsi generic
sg2 type 0
Aug 4 06:15:51 azza kernel: [ 3.798530] sd 5:0:0:0: Attached scsi generic
sg3 type 0
Aug 4 06:15:51 azza kernel: [ 3.798657] scsi 6:0:0:0: Attached scsi generic
sg4 type 5
Aug 4 06:15:51 azza kernel: [ 3.801325] sr0: scsi3-mmc drive: 12x/12x
writer dvd-ram cd/rw xa/form2 cdda tray
Aug 4 06:15:51 azza kernel: [ 3.801389] cdrom: Uniform CD-ROM driver
Revision: 3.20
Aug 4 06:15:51 azza kernel: [ 3.801572] sr 3:0:0:0: Attached scsi CD-ROM sr0
Aug 4 06:15:51 azza kernel: [ 3.811188] sr1: scsi3-mmc drive: 255x/255x
writer dvd-ram cd/rw xa/form2 cdda tray
Aug 4 06:15:51 azza kernel: [ 3.811362] sr 6:0:0:0: Attached scsi CD-ROM sr1
Aug 4 06:15:51 azza kernel: [ 3.824191] sr1: CDROM (ioctl) error, command:
Read TOC/PMA/ATIP 43 00 00 00 00 00 00 00 0c 40
Aug 4 06:15:51 azza kernel: [ 3.824470] sr: Sense Key : Medium Error
[current]
Aug 4 06:15:51 azza kernel: [ 3.824560] sr: Add. Sense: Unable to recover
table-of-contents
Aug 4 06:15:51 azza kernel: [ 3.832212] sr1: CDROM (ioctl) error, command:
Read TOC/PMA/ATIP 43 00 00 00 00 00 00 00 0c 00
Aug 4 06:15:51 azza kernel: [ 3.832488] sr: Sense Key : Medium Error
[current]
Aug 4 06:15:51 azza kernel: [ 3.832578] sr: Add. Sense: Unable to recover
table-of-contents
...
Aug 4 06:20:13 azza kernel: imklog 5.8.11, log source = /proc/kmsg started.
Aug 4 06:20:13 azza kernel: current]
Aug 4 06:20:13 azza kernel: [ 12.533651] sr 6:0:0:0: [sr1] Add. Sense: No
additional sense information
Aug 4 06:20:13 azza kernel: [ 12.535087] sr 6:0:0:0: [sr1] CDB: Read(10): 28
00 00 00 00 00 00 00 01 00
Aug 4 06:20:13 azza kernel: [ 12.536550] end_request: I/O error, dev sr1,
sector 0
Aug 4 06:20:13 azza kernel: [ 12.541537] sr 6:0:0:0: [sr1] Unhandled sense
code
Aug 4 06:20:13 azza kernel: [ 12.542978] sr 6:0:0:0: [sr1] Result:
hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 4 06:20:13 azza kernel: [ 12.544417] sr 6:0:0:0: [sr1] Sense Key :
Blank Check [current]
Aug 4 06:20:13 azza kernel: [ 12.545843] sr 6:0:0:0: [sr1] Add. Sense: No
additional sense information
Aug 4 06:20:13 azza kernel: [ 12.547268] sr 6:0:0:0: [sr1] CDB: Read(10): 28
00 00 00 00 00 00 00 01 00
Aug 4 06:20:13 azza kernel: [ 12.548728] end_request: I/O error, dev sr1,
sector 0
Aug 4 06:20:13 azza kernel: [ 12.553697] sr 6:0:0:0: [sr1] Unhandled sense
code
Aug 4 06:20:13 azza kernel: [ 12.555140] sr 6:0:0:0: [sr1] Result:
hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 4 06:20:13 azza kernel: [ 12.556573] sr 6:0:0:0: [sr1] Sense Key :
Blank Check [current]
Aug 4 06:20:13 azza kernel: [ 12.557997] sr 6:0:0:0: [sr1] Add. Sense: No
additional sense information
Aug 4 06:20:13 azza kernel: [ 12.559424] sr 6:0:0:0: [sr1] CDB: Read(10): 28
00 00 00 00 00 00 00 01 00
....
Aug 4 06:20:13 azza kernel: [ 12.668593] end_request: I/O error, dev sr1,
sector 0
Aug 4 06:20:13 azza kernel: [ 12.673359] sr 6:0:0:0: [sr1] Unhandled sense
code
Aug 4 06:20:13 azza kernel: [ 12.674802] sr 6:0:0:0: [sr1] Result:
hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 4 06:20:13 azza kernel: [ 12.676237] sr 6:0:0:0: [sr1] Sense Key :
Blank Check [current]
Aug 4 06:20:13 azza kernel: [ 12.677661] sr 6:0:0:0: [sr1] Add. Sense: No
additional sense information
Aug 4 06:20:13 azza kernel: [ 12.679095] sr 6:0:0:0: [sr1] CDB: Read(10): 28
00 00 00 00 00 00 00 01 00
Aug 4 06:20:13 azza kernel: [ 12.680555] end_request: I/O error, dev sr1,
sector 0
Aug 4 06:20:13 azza kernel: [ 12.685541] sr 6:0:0:0: [sr1] Unhandled sense
code
Aug 4 06:20:13 azza kernel: [ 12.686984] sr 6:0:0:0: [sr1] Result:
hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 4 06:20:13 azza kernel: [ 12.688417] sr 6:0:0:0: [sr1] Sense Key :
Blank Check [current]
Aug 4 06:20:13 azza kernel: [ 12.689842] sr 6:0:0:0: [sr1] Add. Sense: No
additional sense information
Aug 4 06:20:13 azza kernel: [ 12.691269] sr 6:0:0:0: [sr1] CDB: Read(10): 28
00 00 00 00 00 00 00 01 00
Aug 4 06:20:13 azza kernel: [ 12.692729] end_request: I/O error, dev sr1,
sector 0
Aug 4 06:20:13 azza kernel: [ 13.014699] EXT3-fs (md10): using internal
journal
Aug 4 06:20:13 azza kernel: [ 13.140807] dump_bug_752881() -
disk_max_parts(disk)=256, (disk->flags & GENHD_FL_NO_PART_SCAN)=0x200
Aug 4 06:20:13 azza kernel: [ 13.142307] Pid: 1123, comm: modprobe Not
tainted 3.2.0-amw-fix3+ #1
Aug 4 06:20:13 azza kernel: [ 13.143797] Call Trace:
Aug 4 06:20:13 azza kernel: [ 13.145303] [<ffffffff8119abce>] ?
dump_bug_752881+0x4e/0x6a
Aug 4 06:20:13 azza kernel: [ 13.146771] [<ffffffff8119ac85>] ?
register_disk+0x9b/0x133
Aug 4 06:20:13 azza kernel: [ 13.148239] [<ffffffff8119995b>] ?
blk_register_region+0x22/0x27
Aug 4 06:20:13 azza kernel: [ 13.149700] [<ffffffff8119add2>] ?
add_disk+0xb5/0x27f
Aug 4 06:20:13 azza kernel: [ 13.151148] [<ffffffffa03af843>] ?
loop_add+0x1c9/0x1f5 [loop]
Aug 4 06:20:13 azza kernel: [ 13.152593] [<ffffffff81039613>] ?
should_resched+0x5/0x23
Aug 4 06:20:13 azza kernel: [ 13.154028] [<ffffffffa03b6101>] ?
loop_init+0x101/0x1000 [loop]
Aug 4 06:20:13 azza kernel: [ 13.155472] [<ffffffffa03b6000>] ?
0xffffffffa03b5fff
Aug 4 06:20:13 azza kernel: [ 13.156907] [<ffffffff81002085>] ?
do_one_initcall+0x75/0x12c
Aug 4 06:20:13 azza kernel: [ 13.158350] [<ffffffffa03b6000>] ?
0xffffffffa03b5fff
Aug 4 06:20:13 azza kernel: [ 13.159769] [<ffffffff81073b04>] ?
sys_init_module+0x109/0x25b
Aug 4 06:20:13 azza kernel: [ 13.161185] [<ffffffff813464d2>] ?
system_call_fastpath+0x16/0x1b
Aug 4 06:20:13 azza kernel: [ 13.162810] dump_bug_752881() -
disk_max_parts(disk)=256, (disk->flags & GENHD_FL_NO_PART_SCAN)=0x200
Aug 4 06:20:13 azza kernel: [ 13.164301] Pid: 1123, comm: modprobe Not
tainted 3.2.0-amw-fix3+ #1
Aug 4 06:20:13 azza kernel: [ 13.165738] Call Trace:
Aug 4 06:20:13 azza kernel: [ 13.167167] [<ffffffff8119abce>] ?
dump_bug_752881+0x4e/0x6a
Aug 4 06:20:13 azza kernel: [ 13.168628] [<ffffffff8119ac85>] ?
register_disk+0x9b/0x133
Aug 4 06:20:13 azza kernel: [ 13.170076] [<ffffffff8119995b>] ?
blk_register_region+0x22/0x27
Aug 4 06:20:13 azza kernel: [ 13.171516] [<ffffffff8119add2>] ?
add_disk+0xb5/0x27f
Aug 4 06:20:13 azza kernel: [ 13.172953] [<ffffffffa03af843>] ?
loop_add+0x1c9/0x1f5 [loop]
Aug 4 06:20:13 azza kernel: [ 13.174393] [<ffffffff81039613>] ?
should_resched+0x5/0x23
Aug 4 06:20:13 azza kernel: [ 13.175827] [<ffffffffa03b6101>] ?
loop_init+0x101/0x1000 [loop]
Aug 4 06:20:13 azza kernel: [ 13.177272] [<ffffffffa03b6000>] ?
0xffffffffa03b5fff
Aug 4 06:20:13 azza kernel: [ 13.178672] [<ffffffff81002085>] ?
do_one_initcall+0x75/0x12c
Aug 4 06:20:13 azza kernel: [ 13.180099] [<ffffffffa03b6000>] ?
0xffffffffa03b5fff
Aug 4 06:20:13 azza kernel: [ 13.181495] [<ffffffff81073b04>] ?
sys_init_module+0x109/0x25b
Aug 4 06:20:13 azza kernel: [ 13.182894] [<ffffffff813464d2>] ?
system_call_fastpath+0x16/0x1b
Aug 4 06:20:13 azza kernel: [ 13.184393] dump_bug_752881() -
disk_max_parts(disk)=256, (disk->flags & GENHD_FL_NO_PART_SCAN)=0x200
Aug 4 06:20:13 azza kernel: [ 13.185852] Pid: 1123, comm: modprobe Not
tainted 3.2.0-amw-fix3+ #1
Aug 4 06:20:13 azza kernel: [ 13.187267] Call Trace:
...
Aug 4 06:20:13 azza kernel: [ 13.200581] Pid: 1123, comm: modprobe Not
tainted 3.2.0-amw-fix3+ #1
Aug 4 06:20:13 azza kernel: [ 13.200583] Call Trace:
Aug 4 06:20:13 azza kernel: [ 13.200585] [<ffffffff8119abce>] ?
dump_bug_752881+0x4e/0x6a
Aug 4 06:20:13 azza kernel: [ 13.200587] [<ffffffff8119ac85>] ?
register_disk+0x9b/0x133
Aug 4 06:20:13 azza kernel: [ 13.200589] [<ffffffff8119995b>] ?
blk_register_region+0x22/0x27
Aug 4 06:20:13 azza kernel: [ 13.200591] [<ffffffff8119add2>] ?
add_disk+0xb5/0x27f
Aug 4 06:20:13 azza kernel: [ 13.200595] [<ffffffffa03af843>] ?
loop_add+0x1c9/0x1f5 [loop]
Aug 4 06:20:13 azza kernel: [ 13.200597] [<ffffffff81039613>] ?
should_resched+0x5/0x23
Aug 4 06:20:13 azza kernel: [ 13.200600] [<ffffffffa03b6101>] ?
loop_init+0x101/0x1000 [loop]
Aug 4 06:20:13 azza kernel: [ 13.200603] [<ffffffffa03b6000>] ?
0xffffffffa03b5fff
Aug 4 06:20:13 azza kernel: [ 13.200605] [<ffffffff81002085>] ?
do_one_initcall+0x75/0x12c
Aug 4 06:20:13 azza kernel: [ 13.200608] [<ffffffffa03b6000>] ?
0xffffffffa03b5fff
Aug 4 06:20:13 azza kernel: [ 13.200610] [<ffffffff81073b04>] ?
sys_init_module+0x109/0x25b
Aug 4 06:20:13 azza kernel: [ 13.200613] [<ffffffff813464d2>] ?
system_call_fastpath+0x16/0x1b
Aug 4 06:20:13 azza kernel: [ 13.200637] loop: module loaded
Aug 4 06:20:13 azza kernel: [ 14.717578] sr 6:0:0:0: [sr1] Unhandled sense
code
Aug 4 06:20:13 azza kernel: [ 14.718845] sr 6:0:0:0: [sr1] Result:
hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 4 06:20:13 azza kernel: [ 14.720103] sr 6:0:0:0: [sr1] Sense Key :
Blank Check [current]
Aug 4 06:20:13 azza kernel: [ 14.721353] sr 6:0:0:0: [sr1] Add. Sense: No
additional sense information
Aug 4 06:20:13 azza kernel: [ 14.722606] sr 6:0:0:0: [sr1] CDB: Read(10): 28
00 00 00 00 00 00 00 01 00
Aug 4 06:20:13 azza kernel: [ 14.723891] end_request: I/O error, dev sr1,
sector 0
Aug 4 06:20:13 azza kernel: [ 14.728758] sr 6:0:0:0: [sr1] Unhandled sense
code
Aug 4 06:20:13 azza kernel: [ 14.730048] sr 6:0:0:0: [sr1] Result:
hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 4 06:20:13 azza kernel: [ 14.731325] sr 6:0:0:0: [sr1] Sense Key :
Blank Check [current]
Aug 4 06:20:13 azza kernel: [ 14.732621] sr 6:0:0:0: [sr1] Add. Sense: No
additional sense information
Aug 4 06:20:13 azza kernel: [ 14.733911] sr 6:0:0:0: [sr1] CDB: Read(10): 28
00 00 00 00 00 00 00 01 00
Aug 4 06:20:13 azza kernel: [ 14.735232] end_request: I/O error, dev sr1,
sector 0
...
OBOBOBAug 4 06:20:13 azza kernel: [ 28.845709] sr 6:0:0:0: [sr1] Sense
Key : Blank Check [current]
Aug 4 06:20:13 azza kernel: [ 28.847284] sr 6:0:0:0: [sr1] Add. Sense: No
additional sense information
Aug 4 06:20:13 azza kernel: [ 28.848864] sr 6:0:0:0: [sr1] CDB: Read(10): 28
00 00 00 00 00 00 00 01 00
Aug 4 06:20:13 azza kernel: [ 28.850467] end_request: I/O error, dev sr1,
sector 0
Aug 4 06:20:13 azza kernel: [ 28.852040] quiet_error: 113 callbacks
suppressed
Aug 4 06:20:13 azza kernel: [ 28.853605] Buffer I/O error on device sr1,
logical block 0
Aug 4 06:20:13 azza kernel: [ 28.858548] sr 6:0:0:0: [sr1] Unhandled sense
code
Aug 4 06:20:13 azza kernel: [ 28.860151] sr 6:0:0:0: [sr1] Result:
hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 4 06:20:13 azza kernel: [ 28.861730] sr 6:0:0:0: [sr1] Sense Key :
Blank Check [current]
Aug 4 06:20:13 azza kernel: [ 28.863306] sr 6:0:0:0: [sr1] Add. Sense: No
additional sense information
Aug 4 06:20:13 azza kernel: [ 28.864889] sr 6:0:0:0: [sr1] CDB: Read(10): 28
00 00 00 00 00 00 00 01 00
Aug 4 06:20:13 azza kernel: [ 28.866495] end_request: I/O error, dev sr1,
sector 0
Aug 4 06:20:13 azza kernel: [ 28.868065] Buffer I/O error on device sr1,
logical block 0
Aug 4 06:20:13 azza kernel: [ 28.872980] sr 6:0:0:0: [sr1] Unhandled sense
code
Aug 4 06:20:13 azza kernel: [ 28.874576] sr 6:0:0:0: [sr1] Result:
hostbyte=DID_OK driverbyte=DRIVER_SENSE
