[Bug 1509009] [NEW] extent_io.c:582: free_extent_buffer: Assertion `eb->refs < 0` failed.

Carroarmato0 1509009 at bugs.launchpad.net
Thu Oct 22 16:28:48 UTC 2015


Public bug reported:

btrfs as main / partition

root at ubuntu15:~# btrfs-calc-size /dev/sda1
Calculating size of root tree
	Total size: 16.00KiB
		Inline data: 0.00B
	Total seeks: 0
		Forward seeks: 0
		Backward seeks: 0
		Avg seek len: 0.00B
	Total clusters: 1
		Avg cluster size: 0.00B
		Min cluster size: 0.00B
		Max cluster size: 16.00KiB
	Total disk spread: 0.00B
	Total read time: 0 s 0 us
	Levels: 1
Calculating size of extent tree
	Total size: 4.42MiB
		Inline data: 0.00B
	Total seeks: 203
		Forward seeks: 103
		Backward seeks: 100
		Avg seek len: 208.27MiB
	Seek histogram
		     16384 -      49152:         35 ###
		     81920 -    6127616:         30 ###
		   6832128 -   21413888:         30 ###
		  22151168 -   55820288:         30 ###
		  56918016 -  124698624:         30 ###
		 142213120 - 3406839808:         30 ###
		3442475008 - 3576692736:          6 |
	Total clusters: 30
		Avg cluster size: 58.13KiB
		Min cluster size: 32.00KiB
		Max cluster size: 224.00KiB
	Total disk spread: 3.48GiB
	Total read time: 0 s 47 us
	Levels: 2
Calculating size of csum tree
	Total size: 4.00MiB
		Inline data: 0.00B
	Total seeks: 213
		Forward seeks: 139
		Backward seeks: 74
		Avg seek len: 932.72MiB
	Seek histogram
		     16384 -      49152:         33 ###
		     98304 -     819200:         31 ###
		    901120 -    5554176:         30 ###
		   6307840 -   37978112:         30 ###
		  39190528 - 3504570368:         30 ###
		3509813248 - 3695869952:         30 ###
		3707518976 - 3767025664:         19 #
	Total clusters: 21
		Avg cluster size: 47.24KiB
		Min cluster size: 32.00KiB
		Max cluster size: 96.00KiB
	Total disk spread: 3.55GiB
	Total read time: 0 s 44 us
	Levels: 2
Calculatin' size of fs tree
	Total size: 16.00KiB
		Inline data: 0.00B
	Total seeks: 0
		Forward seeks: 0
		Backward seeks: 0
		Avg seek len: 0.00B
	Total clusters: 1
		Avg cluster size: 0.00B
		Min cluster size: 0.00B
		Max cluster size: 16.00KiB
	Total disk spread: 0.00B
	Total read time: 0 s 0 us
	Levels: 1
extent_io.c:582: free_extent_buffer: Assertion `eb->refs < 0` failed.
btrfs-calc-size[0x4186ca]
btrfs-calc-size[0x4186ed]
btrfs-calc-size(free_extent_buffer+0x44)[0x418ee7]
btrfs-calc-size(btrfs_free_fs_root+0x11)[0x40c76f]
btrfs-calc-size(rb_free_nodes+0x2b)[0x429dd0]
btrfs-calc-size(close_ctree+0xda)[0x40d685]
btrfs-calc-size(main+0x1ba)[0x40701b]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7f1795618a40]
btrfs-calc-size(_start+0x29)[0x407079]

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: btrfs-tools 4.0-2
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
ApportVersion: 2.19.1-0ubuntu3
Architecture: amd64
Date: Thu Oct 22 18:24:09 2015
InstallationDate: Installed on 2015-10-22 (0 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: btrfs-tools
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: btrfs-tools (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug wily

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https://bugs.launchpad.net/bugs/1509009

Title:
  extent_io.c:582: free_extent_buffer: Assertion `eb->refs < 0` failed.

Status in btrfs-tools package in Ubuntu:
  New

Bug description:
  btrfs as main / partition

  root at ubuntu15:~# btrfs-calc-size /dev/sda1
  Calculating size of root tree
  	Total size: 16.00KiB
  		Inline data: 0.00B
  	Total seeks: 0
  		Forward seeks: 0
  		Backward seeks: 0
  		Avg seek len: 0.00B
  	Total clusters: 1
  		Avg cluster size: 0.00B
  		Min cluster size: 0.00B
  		Max cluster size: 16.00KiB
  	Total disk spread: 0.00B
  	Total read time: 0 s 0 us
  	Levels: 1
  Calculating size of extent tree
  	Total size: 4.42MiB
  		Inline data: 0.00B
  	Total seeks: 203
  		Forward seeks: 103
  		Backward seeks: 100
  		Avg seek len: 208.27MiB
  	Seek histogram
  		     16384 -      49152:         35 ###
  		     81920 -    6127616:         30 ###
  		   6832128 -   21413888:         30 ###
  		  22151168 -   55820288:         30 ###
  		  56918016 -  124698624:         30 ###
  		 142213120 - 3406839808:         30 ###
  		3442475008 - 3576692736:          6 |
  	Total clusters: 30
  		Avg cluster size: 58.13KiB
  		Min cluster size: 32.00KiB
  		Max cluster size: 224.00KiB
  	Total disk spread: 3.48GiB
  	Total read time: 0 s 47 us
  	Levels: 2
  Calculating size of csum tree
  	Total size: 4.00MiB
  		Inline data: 0.00B
  	Total seeks: 213
  		Forward seeks: 139
  		Backward seeks: 74
  		Avg seek len: 932.72MiB
  	Seek histogram
  		     16384 -      49152:         33 ###
  		     98304 -     819200:         31 ###
  		    901120 -    5554176:         30 ###
  		   6307840 -   37978112:         30 ###
  		  39190528 - 3504570368:         30 ###
  		3509813248 - 3695869952:         30 ###
  		3707518976 - 3767025664:         19 #
  	Total clusters: 21
  		Avg cluster size: 47.24KiB
  		Min cluster size: 32.00KiB
  		Max cluster size: 96.00KiB
  	Total disk spread: 3.55GiB
  	Total read time: 0 s 44 us
  	Levels: 2
  Calculatin' size of fs tree
  	Total size: 16.00KiB
  		Inline data: 0.00B
  	Total seeks: 0
  		Forward seeks: 0
  		Backward seeks: 0
  		Avg seek len: 0.00B
  	Total clusters: 1
  		Avg cluster size: 0.00B
  		Min cluster size: 0.00B
  		Max cluster size: 16.00KiB
  	Total disk spread: 0.00B
  	Total read time: 0 s 0 us
  	Levels: 1
  extent_io.c:582: free_extent_buffer: Assertion `eb->refs < 0` failed.
  btrfs-calc-size[0x4186ca]
  btrfs-calc-size[0x4186ed]
  btrfs-calc-size(free_extent_buffer+0x44)[0x418ee7]
  btrfs-calc-size(btrfs_free_fs_root+0x11)[0x40c76f]
  btrfs-calc-size(rb_free_nodes+0x2b)[0x429dd0]
  btrfs-calc-size(close_ctree+0xda)[0x40d685]
  btrfs-calc-size(main+0x1ba)[0x40701b]
  /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7f1795618a40]
  btrfs-calc-size(_start+0x29)[0x407079]

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: btrfs-tools 4.0-2
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  ApportVersion: 2.19.1-0ubuntu3
  Architecture: amd64
  Date: Thu Oct 22 18:24:09 2015
  InstallationDate: Installed on 2015-10-22 (0 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  SourcePackage: btrfs-tools
  UpgradeStatus: No upgrade log present (probably fresh install)

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