The patch titled
direct-io: fix error-path crashes
has been removed from the -mm tree. Its filename was
direct-io-fix-error-path-crashes.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: direct-io: fix error-path crashes
From: Badari Pulavarty <pbadari@xxxxxxxxxx>
Need to initialize map_bh.b_state to zero. Otherwise, in case of a faulty
user-buffer its possible to go into dio_zero_block() and submit a page by
mistake - since it checks for buffer_new().
http://marc.info/?l=linux-kernel&m=118551339032528&w=2
akpm: Linus had a (better) patch to just do a kzalloc() in there, but it got
lost. Probably this version is better for -stable anwyay.
Signed-off-by: Badari Pulavarty <pbadari@xxxxxxxxxx>
Acked-by: Joe Jin <joe.jin@xxxxxxxxxx>
Acked-by: Zach Brown <zach.brown@xxxxxxxxxx>
Cc: gurudas pai <gurudas.pai@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/direct-io.c | 1 +
1 files changed, 1 insertion(+)
diff -puN fs/direct-io.c~direct-io-fix-error-path-crashes fs/direct-io.c
--- a/fs/direct-io.c~direct-io-fix-error-path-crashes
+++ a/fs/direct-io.c
@@ -974,6 +974,7 @@ direct_io_worker(int rw, struct kiocb *i
dio->get_block = get_block;
dio->end_io = end_io;
dio->map_bh.b_private = NULL;
+ dio->map_bh.b_state = 0;
dio->final_block_in_bio = -1;
dio->next_block_for_io = -1;
_
Patches currently in -mm which might be from pbadari@xxxxxxxxxx are
ext3-convert-to-new-aops.patch
ext4-convert-to-new-aops.patch
hugetlbfs-read-support.patch
hugetlbfs-read-support-fix.patch
ext2-statfs-improvement-for-block-and-inode-free-count.patch
fix-for-ext2-reservation.patch
sysctl-remove-the-binary-interface-for-aio-nr-aio-max-nr-acpi_video_flags.patch
-
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