lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-ID: <bug-193431-13602-cJhNfVyoEp@https.bugzilla.kernel.org/> Date: Mon, 30 Jan 2017 11:11:25 +0000 From: bugzilla-daemon@...zilla.kernel.org To: linux-ext4@...r.kernel.org Subject: [Bug 193431] 512 byte inodes + inline_data + journal_data == segfaults/buserrors in userspace mmap https://bugzilla.kernel.org/show_bug.cgi?id=193431 Peter Rabbitson <rabbit@...bit.us> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |REOPENED Resolution|INVALID |--- --- Comment #3 from Peter Rabbitson <rabbit@...bit.us> --- I assure you the problem is real. In my frustration/excitement I did not properly trim down the testcase, and ignored the obvious change in behavior ( SIGUS -> SIGSEGV ). Unfortunately I won't have time in the next couple days to properly trim this down. All I currently have is the tarball of a minimalistic chroot left over from a failed debian install ( 35MiB SHA1:18917303621bd99ef8c319107ed0dcd2eb44abe0 ): https://ipfs.io/ipfs/QmVbjsxH93Wy4Lnx1pThdd1iQ33TpeysoHuwzFb7awef5U/chroot_with_failing_locales_reconfig.tar.xz The failure is as follows, showcasing a successful run and a failing run right after ( the 512 inode size was a red herring: 256 fails as well ): root@...sver:~# dd if=/dev/zero of=zeros.img bs=512M count=1 1+0 records in 1+0 records out 536870912 bytes (537 MB) copied, 11.8806 s, 45.2 MB/s root@...sver:~# losetup -f zeros.img root@...sver:~# mke2fs -t ext4 -j -O inline_data /dev/loop0 mke2fs 1.43.3 (04-Sep-2016) Discarding device blocks: done Creating filesystem with 131072 4k blocks and 32768 inodes Filesystem UUID: 027504fd-e49d-42a3-bcd5-4ea3a05af5ed Superblock backups stored on blocks: 32768, 98304 Allocating group tables: done Writing inode tables: done Creating journal (4096 blocks): done Writing superblocks and filesystem accounting information: done root@...sver:~# mount /dev/loop0 /mnt root@...sver:~# cd /mnt root@...sver:/mnt# tar -Jxf ~/chroot_with_failing_locales_reconfig.tar.xz root@...sver:/mnt# cd chroot_with_failing_locales_reconfig/ root@...sver:/mnt/chroot_with_failing_locales_reconfig# ./chroot.bash root@...sver:/# dpkg-reconfigure -u locales Generating locales (this might take a while)... en_US.ISO-8859-1... done en_US.UTF-8... done Generation complete. root@...sver:/# exit root@...sver:/mnt/chroot_with_failing_locales_reconfig# cd root@...sver:~# umount /mnt root@...sver:~# mount -o data=journal /dev/loop0 /mnt root@...sver:~# cd /mnt/chroot_with_failing_locales_reconfig/ root@...sver:/mnt/chroot_with_failing_locales_reconfig# ./chroot.bash root@...sver:/# dpkg-reconfigure -u locales Generating locales (this might take a while)... en_US.ISO-8859-1...Bus error done en_US.UTF-8...Bus error done Generation complete. -- You are receiving this mail because: You are watching the assignee of the bug.
Powered by blists - more mailing lists