[Cluster-devel] gfs2-utils: mkfs segfault with 4.16 kernel

[Valentin Vidic <Valentin.Vidic@CARNet.hr>]

On Fri, May 04, 2018 at 11:42:31AM +0200, Valentin Vidic wrote:
> We are starting to see mkfs segfaults after updating
> linux-libc-dev from 4.15.17-1 to 4.16.5-1 due to a
> change in gfs2_ondisk.h.  Hope there is enough info
> below for a fix? :)

Here goes another trace:

(gdb) run -p lock_nolock -b 512 test
Starting program: /build/gfs2-utils-7xEZHP/gfs2-utils-3.1.10/gfs2/mkfs/mkfs.gfs2 -p lock_nolock -b 512 test
This will destroy any data on test
Are you sure you want to proceed? [y/n] y
Adding journals: Done 
Building resource groups: Done 

Program received signal SIGSEGV, Segmentation fault.
0x000055555555bdc0 in brelse (bh=0x555555773730) at buf.c:108
108     buf.c: No such file or directory.
(gdb) bt
#0  0x000055555555bdc0 in brelse (bh=0x555555773730) at buf.c:108
#1  0x00005555555599f5 in gfs2_rgrp_relse (rgd=rgd at entry=0x5555557723c0) at rgrp.c:206
#2  0x000055555555d936 in block_alloc (sdp=sdp at entry=0x7fffffffe560, blksreq=blksreq at entry=1, state=state at entry=3, blkno=blkno at entry=0x7fffffffe160, dinode=dinode at entry=1) at fs_ops.c:197
#3  0x000055555555df77 in lgfs2_dinode_alloc (sdp=sdp at entry=0x7fffffffe560, blksreq=blksreq at entry=1, blkno=blkno at entry=0x7fffffffe160) at fs_ops.c:204
#4  0x000055555556128f in build_master (sdp=0x7fffffffe560) at structures.c:28
#5  0x00005555555574fc in main (argc=<optimized out>, argv=<optimized out>) at main_mkfs.c:996

-- 
Valentin