diff options
| author | Shaurya Rane <ssrane_b23@ee.vjti.ac.in> | 2025-12-04 23:42:59 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-18 13:55:19 +0100 |
| commit | 453e4b0c84d0db1454ff0adf655d91179e6fca3a (patch) | |
| tree | d4ce85b368d8981832427987dacce192c0991ac9 /include/net/aligned_data.h | |
| parent | b8da217fc928089370d8250cf049ed60455267ad (diff) | |
block: fix memory leak in __blkdev_issue_zero_pages
[ Upstream commit f7e3f852a42d7cd8f1af2c330d9d153e30c8adcf ]
Move the fatal signal check before bio_alloc() to prevent a memory
leak when BLKDEV_ZERO_KILLABLE is set and a fatal signal is pending.
Previously, the bio was allocated before checking for a fatal signal.
If a signal was pending, the code would break out of the loop without
freeing or chaining the just-allocated bio, causing a memory leak.
This matches the pattern already used in __blkdev_issue_write_zeroes()
where the signal check precedes the allocation.
Fixes: bf86bcdb4012 ("blk-lib: check for kill signal in ioctl BLKZEROOUT")
Reported-by: syzbot+527a7e48a3d3d315d862@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=527a7e48a3d3d315d862
Signed-off-by: Shaurya Rane <ssrane_b23@ee.vjti.ac.in>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Tested-by: syzbot+527a7e48a3d3d315d862@syzkaller.appspotmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/net/aligned_data.h')
0 files changed, 0 insertions, 0 deletions