Bug 710703

Summary: [abrt] kernel: BUG: unable to handle kernel NULL pointer dereference
Product: [Fedora] Fedora Reporter: Varuna Seneviratna <varunaseneviratna>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 15CC: gansalmon, itamar, jonathan, kernel-maint, kmcmartin, madhu.chinakonda, varunaseneviratna
Target Milestone: ---   
Target Release: ---   
Hardware: i686   
OS: Unspecified   
Whiteboard: abrt_hash:0679d8589c6056a04bcb56466b3e5589ada7a4be
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-06-13 19:15:58 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Varuna Seneviratna 2011-06-04 06:44:08 UTC 
abrt version: 2.0.1
architecture:   i686
cmdline:        ro root=/dev/mapper/vg_varuna-lv_root rd_LUKS_UUID=luks-2d1df739-de94-4348-9090-d5e5cfca83c2 rd_LVM_LV=vg_varuna/lv_root rd_LVM_LV=vg_varuna/lv_swap rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us rhgb quiet
component:      kernel
kernel:         2.6.38.6-26.rc1.fc15.i686
os_release:     Fedora release 15 (Lovelock)
package:        kernel
reason:         BUG: unable to handle kernel NULL pointer dereference
reported_to:    kerneloops: URL=http://submit.kerneloops.org/submitoops.php
time:           Sat Jun  4 11:53:15 2011

backtrace:
:BUG: unable to handle kernel NULL pointer dereference
:Buffer I/O error on device sdb1, logical block 7
:Buffer I/O error on device sdb1, logical block 7
:Buffer I/O error on device sdb1, logical block 7
:Buffer I/O error on device sdb1, logical block 7
:Buffer I/O error on device sdb1, logical block 7
:Buffer I/O error on device sdb1, logical block 15
:Buffer I/O error on device sdb1, logical block 15
:Buffer I/O error on device sdb1, logical block 15
:Buffer I/O error on device sdb1, logical block 15
:Buffer I/O error on device sdb1, logical block 7
: at 00000028
:IP: [<c05b4dd4>] elv_completed_request+0x3a/0x46
:*pde = 3d7e6067 
:Oops: 0000 [#1] SMP 
:last sysfs file: /sys/devices/pci0000:00/0000:00:1d.7/class
:Modules linked in: fuse 8021q garp stp llc cpufreq_ondemand acpi_cpufreq mperf ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables usblp snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm microcode ppdev snd_timer iTCO_wdt iTCO_vendor_support parport_pc parport r8169 mii i2c_i801 snd soundcore snd_page_alloc ipv6 xts gf128mul dm_crypt uas usb_storage i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
:Pid: 3, comm: ksoftirqd/0 Not tainted 2.6.38.6-26.rc1.fc15.i686 #1                  /D945GCNL
:EIP: 0060:[<c05b4dd4>] EFLAGS: 00010002 CPU: 0
:EIP is at elv_completed_request+0x3a/0x46
:EAX: f410e300 EBX: f415f600 ECX: 00000000 EDX: df989e80
:ESI: df989e80 EDI: 0000006c EBP: f4823e9c ESP: f4823e98
: DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
:Process ksoftirqd/0 (pid: 3, ti=f4822000 task=f4891920 task.ti=f48a8000)
:Stack:
: f410e300 f4823eb0 c05b9331 df989e80 f4250a00 0000006c f4823edc c05b9519
: 00000000 000008ba f4823ec8 f4823ed0 00000000 00000004 f410e300 df989e80
: 00000000 f4823ef8 c05b95ee 00000000 00000246 df923900 00000000 df989e80
:Call Trace:
: [<c05b9331>] __blk_put_request+0x2b/0x91
: [<c05b9519>] blk_finish_request+0x182/0x18a

comment:
:How did this problem happen
:
:    I tried to exceute the Safely Remove Drive and the computer started giving a laud hum sound then got stuck
:
:How to reproduce
:         Restart the computer by pressing the restart Button and Execute the menu Safely Remove Drive again
:

event_log:
:2011-06-04-12:06:34> Submitting oops report to http://submit.kerneloops.org/submitoops.php
:2011-06-04-12:06:41  Kernel oops report was uploaded
:2011-06-04-12:06:41> Logging into Bugzilla at https://bugzilla.redhat.com
:2011-06-04-12:06:49  Can't login. Server said: RPC failed at server.  The username or password you entered is not valid.
:2011-06-04-12:06:49* (exited with 1)
Comment 1 Varuna Seneviratna 2011-06-04 07:14:44 UTC 
This problem occures when I try to execute the Safely Remove Drive menu on the external USB connected Western Digital Hard Drive
Comment 2 Varuna Seneviratna 2011-06-04 18:35:29 UTC 
After Safely Remove Drive menu has been executed Sometimes the system does not get stuck But instead gives the bug https://bugzilla.redhat.com/show_bug.cgi?id=708819 when clicked on the Drive icon 

It is not only me having this problem But others also take a look at the thread http://forums.fedoraforum.org/showthread.php?p=1480629#post1480629 I posted at Fedora Forums.
Comment 3 Varuna Seneviratna 2011-06-05 02:42:37 UTC 
Same type of bug is filled at
https://bugzilla.redhat.com/show_bug.cgi?id=708270
Comment 4 Kyle McMartin 2011-06-13 19:15:58 UTC 

*** This bug has been marked as a duplicate of bug 708832 ***