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authorJoakim Tjernlund <Joakim.Tjernlund@transmode.se>2007-06-24 19:22:29 +0200
committerDavid Woodhouse <dwmw2@infradead.org>2007-08-02 21:36:35 +0100
commit5bd5c03c317085339deb044ba52fce131a6a0b67 (patch)
tree2d4b7691136f6069ef074c5f7b2b872f2ecd9f2d
parent370504cf7c68b953de55c41d5e0be97d30f3cf00 (diff)
[JFFS2] Prevent oops after 'node added in wrong place' debug check
jffs2_add_physical_node_ref() should never really return error -- it's an internal debugging check which triggered. We really need to work out why and stop it happening. But in the meantime, let's make the failure mode a little less nasty. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
-rw-r--r--fs/jffs2/write.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/jffs2/write.c b/fs/jffs2/write.c
index c9fe0ab3a329..1406f2ce20a7 100644
--- a/fs/jffs2/write.c
+++ b/fs/jffs2/write.c
@@ -173,6 +173,12 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
flash_ofs |= REF_NORMAL;
}
fn->raw = jffs2_add_physical_node_ref(c, flash_ofs, PAD(sizeof(*ri)+datalen), f->inocache);
+ if (IS_ERR(fn->raw)) {
+ void *hold_err = fn->raw;
+ /* Release the full_dnode which is now useless, and return */
+ jffs2_free_full_dnode(fn);
+ return ERR_PTR(PTR_ERR(hold_err));
+ }
fn->ofs = je32_to_cpu(ri->offset);
fn->size = je32_to_cpu(ri->dsize);
fn->frags = 0;
@@ -291,6 +297,12 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
}
/* Mark the space used */
fd->raw = jffs2_add_physical_node_ref(c, flash_ofs | REF_PRISTINE, PAD(sizeof(*rd)+namelen), f->inocache);
+ if (IS_ERR(fd->raw)) {
+ void *hold_err = fd->raw;
+ /* Release the full_dirent which is now useless, and return */
+ jffs2_free_full_dirent(fd);
+ return ERR_PTR(PTR_ERR(hold_err));
+ }
if (retried) {
jffs2_dbg_acct_sanity_check(c,NULL);