Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Bob Peterson 23f98fe887 gfs2: Don't deref jdesc in evict ... commit 504a10d9e46bc37b23d0a1ae2f28973c8516e636 upstream. On corrupt gfs2 file systems the evict code can try to reference the journal descriptor structure, jdesc, after it has been freed and set to NULL. The sequence of events is: init_journal() ... fail_jindex: gfs2_jindex_free(sdp); <------frees journals, sets jdesc = NULL if (gfs2_holder_initialized(&ji_gh)) gfs2_glock_dq_uninit(&ji_gh); fail: iput(sdp->sd_jindex); <--references jdesc in evict_linked_inode evict() gfs2_evict_inode() evict_linked_inode() ret = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks); <------references the now freed/zeroed sd_jdesc pointer. The call to gfs2_trans_begin is done because the truncate_inode_pages call can cause gfs2 events that require a transaction, such as removing journaled data (jdata) blocks from the journal. This patch fixes the problem by adding a check for sdp->sd_jdesc to function gfs2_evict_inode. In theory, this should only happen to corrupt gfs2 file systems, when gfs2 detects the problem, reports it, then tries to evict all the system inodes it has read in up to that point. Reported-by: Yang Lan <lanyang0908@gmail.com> Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> [DP: adjusted context] Signed-off-by: Dragos-Marian Panait <dragos.panait@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-07-27 08:37:03 +02:00
..
acl.c
acl.h
aops.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
aops.h
bmap.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
bmap.h
dentry.c
dir.c
dir.h
export.c
file.c
gfs2.h
glock.c
glock.h
glops.c	gfs2: Fix inode height consistency check	2023-05-30 12:44:03 +01:00
glops.h
incore.h
inode.c
inode.h
Kconfig
lock_dlm.c
log.c
log.h
lops.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
lops.h
main.c
Makefile
meta_io.c
meta_io.h
ops_fstype.c	gfs2: Switch from strlcpy to strscpy	2022-11-25 17:42:22 +01:00
quota.c
quota.h
recovery.c
recovery.h
rgrp.c
rgrp.h
super.c	gfs2: Don't deref jdesc in evict	2023-07-27 08:37:03 +02:00
super.h
sys.c
sys.h
trace_gfs2.h
trans.c
trans.h
util.c
util.h
xattr.c
xattr.h