Bug 48301 - Kernel panic when try delete really big file (3,3TB)
Summary: Kernel panic when try delete really big file (3,3TB)
Status: RESOLVED PATCH_ALREADY_AVAILABLE
Alias: None
Product: File System
Classification: Unclassified
Component: ext4 (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: fs_ext4@kernel-bugs.osdl.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-10-04 05:43 UTC by Zdenek Zdvorak
Modified: 2012-10-04 17:49 UTC (History)
3 users (show)

See Also:
Kernel Version: 3.4.9
Subsystem:
Regression: No
Bisected commit-id:

Attachments
DMESG, system info (8.24 KB, text/plain)
2012-10-04 05:44 UTC, Zdenek Zdvorak 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Zdenek Zdvorak 2012-10-04 05:43:45 UTC 
I try test filesystem ext4 mounted as / on RAID5 (4*2TB).
Create about 3,3TB file by "ddrescue /dev/zero /mnt/zero-file
after that try delete this file "rm /mnt/zero-file"....

system print bugtrace and after that not respond, unable to reboot. 
After manual restart, unable to boot (kernel panic when try mount / ).

Solved by boot actual systemrescueCD and after 1 minutes filesystem successfully mounted, after next manual restart, standard os boot ok.

Sorry for english.

Thanks
Zdvori
Comment 1 Zdenek Zdvorak 2012-10-04 05:44:24 UTC 
Created attachment 82021 [details]
DMESG, system info
Comment 2 Alan 2012-10-04 11:02:45 UTC 
"Sorry for english"

All fine - your description is perfectly understandable
Comment 3 Lukas Czerner 2012-10-04 11:41:29 UTC 
This has been fixed with v3.6-rc1-5-g89a4e48

89a4e48f8479f8145eca9698f39fe188c982212f ext4: fix kernel BUG on large-scale rm -rf commands

-Lukas
Comment 4 Theodore Tso 2012-10-04 17:49:02 UTC 
This bug is also fixed in v3.4.10 (although you should probably consider going to the latest 3.4.x kernel, which is 3.4.11).
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