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| author |   Adrian Hunter <ext-adrian.hunter@nokia.com> | 2007-03-29 11:00:47 +0300 |
|---|---|---|
| committer |   David Woodhouse <dwmw2@infradead.org> | 2007-04-17 13:56:23 -0400 |
| commit | 99c2594f0e13de1ca84f97efc3f9e7bc49f91e11 (patch) | |
| tree | 1443d71d19473758d21bbdcb3a3f080b9449c4f2 | |
| parent | [MTD] nandsim: enhance nandsim to allow arbitrary NAND size (diff) | |
| download | linux-dev-99c2594f0e13de1ca84f97efc3f9e7bc49f91e11.tar.xz linux-dev-99c2594f0e13de1ca84f97efc3f9e7bc49f91e11.zip | |
[JFFS2] Prevent list corruption when handling write errors
If a write error occurs, the affected block is placed on the
bad_used_list. In the case that the write error occured
when writing summary data the block was also being placed on
the dirty_list, which caused list corruption and ultimately
a soft lockup in jffs2_mark_node_obsolete. This fixes that.
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| -rw-r--r-- | fs/jffs2/nodemgmt.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c index d88376992ed9..c8b50dea9e14 100644 --- a/fs/jffs2/nodemgmt.c +++ b/fs/jffs2/nodemgmt.c @@ -172,6 +172,11 @@ int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize, static void jffs2_close_nextblock(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb) { + if (c->nextblock == NULL) { + D1(printk(KERN_DEBUG "jffs2_close_nextblock: Erase block at 0x%08x has already been placed in a list\n", + jeb->offset)); + return; + } /* Check, if we have a dirty block now, or if it was dirty already */ if (ISDIRTY (jeb->wasted_size + jeb->dirty_size)) { c->dirty_size += jeb->wasted_size; |