ebb3b84596
commit 428f651cb80b227af47fc302e4931791f2fb4741 upstream. Before this patch, function read_rindex_entry called compute_bitstructs before it allocated a glock for the rgrp. But if compute_bitstructs found a problem with the rgrp, it called gfs2_consist_rgrpd, and that called gfs2_dump_glock for rgd->rd_gl which had not yet been assigned. read_rindex_entry compute_bitstructs gfs2_consist_rgrpd gfs2_dump_glock <---------rgd->rd_gl was not set. This patch changes read_rindex_entry so it assigns an rgrp glock before calling compute_bitstructs so gfs2_dump_glock does not reference an unassigned pointer. If an error is discovered, the glock must also be put, so a new goto and label were added. Reported-by: syzbot+c6fd14145e2f62ca0784@syzkaller.appspotmail.com Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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.. | ||
acl.c | ||
acl.h | ||
aops.c | ||
aops.h | ||
bmap.c | ||
bmap.h | ||
dentry.c | ||
dir.c | ||
dir.h | ||
export.c | ||
file.c | ||
gfs2.h | ||
glock.c | ||
glock.h | ||
glops.c | ||
glops.h | ||
incore.h | ||
inode.c | ||
inode.h | ||
Kconfig | ||
lock_dlm.c | ||
log.c | ||
log.h | ||
lops.c | ||
lops.h | ||
main.c | ||
Makefile | ||
meta_io.c | ||
meta_io.h | ||
ops_fstype.c | ||
quota.c | ||
quota.h | ||
recovery.c | ||
recovery.h | ||
rgrp.c | ||
rgrp.h | ||
super.c | ||
super.h | ||
sys.c | ||
sys.h | ||
trace_gfs2.h | ||
trans.c | ||
trans.h | ||
util.c | ||
util.h | ||
xattr.c | ||
xattr.h |