When I tried to do online resize of ext4 I got: [ 745.863764] PAX: size overflow detected in function set_flexbg_block_bitmap fs/ext4/resize.c:387 cicus.710_125 min, count: 22 [ 745.863769] CPU: 0 PID: 2823 Comm: resize2fs Tainted: GF O 3.12.8-hardened #1 [ 745.863771] Hardware name: Xen HVM domU, BIOS 3.4.4 06/25/2012 [ 745.863773] 0000000000000002 ffff88002b1658c8 ffffffff81381a6c ffff88002fc0c578 [ 745.863776] ffffffffffffffff ffff88002b1658d8 ffffffff811023a4 ffff88002b165978 [ 745.863778] ffffffff811937cc ffff88002e35f000 0000000000000000 ffffffff813c8020 [ 745.863781] Call Trace: [ 745.863788] [<ffffffff81381a6c>] dump_stack+0x46/0x5e [ 745.863794] [<ffffffff811023a4>] report_size_overflow+0x24/0x30 [ 745.863797] [<ffffffff811937cc>] set_flexbg_block_bitmap+0x34c/0x3b0 [ 745.863801] [<ffffffff8119ead7>] ? __ext4_handle_dirty_metadata+0x97/0x1d0 [ 745.863804] [<ffffffff811946f1>] setup_new_flex_group_blocks+0x771/0x850 [ 745.863807] [<ffffffff8119487c>] ext4_flex_group_add+0xac/0x12b0 [ 745.863809] [<ffffffff81193b84>] ? update_backups+0x2b4/0x470 [ 745.863812] [<ffffffff810f777d>] ? __kmalloc+0x2d/0x100 [ 745.863815] [<ffffffff8117529b>] ? ext4_bg_num_gdb+0x7b/0x90 [ 745.863817] [<ffffffff81196e12>] ext4_resize_fs+0x962/0x1170 [ 745.863821] [<ffffffff81120a12>] ? __mnt_want_write+0x42/0x60 [ 745.863824] [<ffffffff81185073>] ext4_ioctl+0xf73/0x14d0 [ 745.863826] [<ffffffff811101ce>] ? do_filp_open+0x3e/0xa0 [ 745.863829] [<ffffffff811123d5>] do_vfs_ioctl+0xa5/0x8a0 [ 745.863831] [<ffffffff8111e6a6>] ? __fd_install+0x26/0x60 [ 745.863833] [<ffffffff8110af81>] ? final_putname+0x21/0x50 [ 745.863835] [<ffffffff810faebc>] ? do_sys_open+0x1ac/0x230 [ 745.863837] [<ffffffff81112c61>] SyS_ioctl+0x91/0xb0 [ 745.863840] [<ffffffff813874ff>] ? sysret_check+0x1e/0x60 [ 745.863842] [<ffffffff813874d7>] system_call_fastpath+0x1a/0x1f After this all writes on this fs are suspended. # emerge --info !!! Repository 'x-portage' is missing masters attribute in '/usr/portage/metadata/layout.conf' !!! Set 'masters = gentoo' in this file for future compatibility FEATURES variable contains unknown value(s): Xfail-clean, Xkeepwork, Xprofile, Xsplitdebug, Xtest, Yunknown-features-filter, profile-use Portage 2.2.7 (unavailable, gcc-4.7.3, glibc-2.17, 3.12.8-hardened x86_64) ================================================================= System uname: Linux-3.12.8-hardened-x86_64-Intel-R-_Core-TM-_i7_CPU_930_@_2.80GHz-with-gentoo-2.2 KiB Mem: 762088 total, 608812 free KiB Swap: 1172708 total, 1172708 free Timestamp of tree: Unknown ld GNU gold (GNU Binutils 2.23.2) 1.11 distcc 3.1 x86_64-pc-linux-gnu [disabled] ccache version 3.1.9 [enabled] dev-lang/python: 2.7.5-r3::gentoo, 3.2.5-r3::gentoo, 3.3.3::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69::gentoo sys-devel/automake: 1.11.6::gentoo, 1.12.6::gentoo, 1.13.4::gentoo sys-devel/binutils: 2.23.2::gentoo sys-devel/libtool: 2.4.2::gentoo sys-kernel/linux-headers: 3.9::gentoo (virtual/os-headers) Repositories: gentoo ACCEPT_LICENSE="* -@EULA" CFLAGS="-march=native -O2 -fexpensive-optimizations -fgraphite-identity -floop-interchange -ftree-loop-linear -floop-block -floop-strip-mine -fira-loop-pressure -fpredictive-commoning -freorder-blocks-and-partition -ftracer -ftree-vectorize -frecord-gcc-switches -fno-unwind-tables -fno-asynchronous-unwind-tables --param l2-cache-size=128 --param l1-cache-size=16 --param l1-cache-line-size=32 -pipe -Wdisabled-optimization -Wstack-protector" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/easy-rsa /usr/share/gnupg/qualified.txt /var/bind" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gentoo-release /etc/php/apache2-php5.3/ext-active/ /etc/php/cgi-php5.3/ext-active/ /etc/php/cli-php5.3/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=native -O2 -fexpensive-optimizations -fgraphite-identity -floop-interchange -ftree-loop-linear -floop-block -floop-strip-mine -fira-loop-pressure -fpredictive-commoning -freorder-blocks-and-partition -ftracer -ftree-vectorize -frecord-gcc-switches -fno-unwind-tables -fno-asynchronous-unwind-tables --param l2-cache-size=128 --param l1-cache-size=16 --param l1-cache-line-size=32 -pipe -Wdisabled-optimization -Wstack-protector" DISTDIR="/usr/portage/distfiles" FEATURES="Xfail-clean Xkeepwork Xprofile Xsplitdebug Xtest Yunknown-features-filter assume-digests binpkg-logs ccache collision-protect config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs profile-use protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch usersandbox usersync xattr" GENTOO_MIRRORS="http://gentoo.mneisen.org/" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="" USE="acpi apache2 bash-completion caps hardened idn iproute2 ipv6 mmap mmx mmxext modules nls openmp openssl smp sse sse2 sse3 sse4 sse4a ssse3 syslog threads threadsafe unicode urandom vhosts vim-syntax xtpax" Unset: ACCEPT_KEYWORDS, EMERGE_DEFAULT_OPTS, PORTAGE_BUNZIP2_COMMAND
The same with sys-fs/e2fsprogs-1.42.9
I did e2image of that filesystem, next I succesfully did offline resize.
Do you know if this is still an issue in recent kernels?
There have been a lot of changes since 3.12.8. Please reopen if you are hitting this with any of the more recent hardened-sources.
I couldn't find sys-kernel/hardened-sources-3.12.8 to reproduce problem and then check new kernel.
