You have been subscribed to a public bug by Eric Desrochers (slashd): [Impact]
* Under certain conditions (such as when selinux is enabled and probably other ways) xfsprogs on Trusty may report a error "illegal inode type" and SIGABRT, generating a coredump as follow : sing host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `xfs_logprint -c /dev/mapper/image-glance'. Program terminated with signal SIGABRT, Aborted. when more than one flag is set on f->ilf_fields. [Explanation] As we speak, the switch() statement is doing a Binary AND between ifl_fields & XFS_ILOG_NONCORE. switch (f->ilf_fields & XFS_ILOG_NONCORE) { XFS_ILOG_NONCORE being the sum of a Binary OR for all the Inode changes to log: #define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \ XFS_ILOG_DBROOT | XFS_ILOG_DEV | \ XFS_ILOG_UUID | XFS_ILOG_ADATA | \ XFS_ILOG_AEXT | XFS_ILOG_ABROOT) When more than 1 flag is set in "ifl_fields" (Example took from the coredump in gdb "ilf_fields = 133") ---------------------------------- #define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */ #define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */ #define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */ #define XFS_ILOG_DEV 0x010 /* log the dev field */ #define XFS_ILOG_UUID 0x020 /* log the uuid field */ #define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */ #define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */ #define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */ ifl_field = 133 & XFS_ILOG_NONCORE= 510 = 132 ---------------------------------- and cannot match any case statement based on the inode flags value above and has no choice but to use default: statement because none of them are true and call xlog_panic(). [Test Case] 1) Create a XFS device (dev/vdb1) 2) apt-get dist-upgrade 3) Remove apparmor # To avoid potential conflict with selinux. 4) Reboot 5) Installed selinux # so that data+attr is set, and logprinting. 6) Reboot 7) Run xfs_logprint against /dev/vdb1 - sudo xfs_logprint -c /dev/vdb1 There is probably other ways but that is the one I used based on the git commit log: "I've tested this by a simple test such as creating one file on an selinux box, so that data+attr is set, and logprinting" [Regression Potential] * This is a rework of "xlog_print_trans_inode()" to handle more than one flag on f->ilf_fields if set in order to stop going in error and abort when facing the situation. The change has been there for a while now (Jan 2013). The rework offer a better detection instead of a one size fits all, and provide various switch() statement context and appropriate actions. It is also capable to handle multiply-logged inode fields which current Trusty version can't handle. [Other Info] * The patch never land in Trusty because the package was a copy from it's predecessor release, saucy, and never been SRU since then. * Upstream commit: https://git.kernel.org/pub/scm/fs/xfs/xfsprogs-dev.git/commit/?id=dda4129 * Trusty AFFECTED ONLY. $ git describe --contains dda4129 v3.1.11~29 $ rmadison xfsprogs ==> xfsprogs | 3.1.9ubuntu2 | trusty <== xfsprogs | 4.3.0+nmu1ubuntu1 | xenial xfsprogs | 4.3.0+nmu1ubuntu1.1 | xenial-updates xfsprogs | 4.9.0+nmu1ubuntu1 | artful xfsprogs | 4.9.0+nmu1ubuntu1 | bionic [Orig Description] It has been brought to my attention that the following : " The command 'xfs_logprint -c <DEVICE>' coredump on Trusty and display the error : xlog_print_trans_inode: illegal inode type " ** Affects: xfsprogs (Ubuntu) Importance: Undecided Status: Fix Released ** Affects: xfsprogs (Ubuntu Trusty) Importance: Medium Assignee: Eric Desrochers (slashd) Status: In Progress ** Tags: sts -- xfs_logprint can't handle multiply-logged inode fields https://bugs.launchpad.net/bugs/1763086 You received this bug notification because you are a member of STS Sponsors, which is subscribed to the bug report. -- Mailing list: https://launchpad.net/~sts-sponsors Post to : sts-sponsors@lists.launchpad.net Unsubscribe : https://launchpad.net/~sts-sponsors More help : https://help.launchpad.net/ListHelp