Hi, This patch set fixes two bugs of splice_write in the virtio-console driver. [BUG1] Although pipe->nrbufs is empty, the driver tries to do splice_write. => This induces oops in sg_init_table(). [BUG2] No lock for competition of splice_write. => This induces oops in splice_from_pipe_feed() by bug of any user application. These reports are written in each patch. Changes in V2: - Fix a locking problem for error Changes in V3: - Add Reviewed-by lines and stable@ line in sign-off area Thanks! --- Yoshihiro YUNOMAE (2): [BUGFIX] virtio/console: Quit from splice_write if pipe->nrbufs is 0 [BUGFIX] virtio/console: Add pipe_lock/unlock for splice_write drivers/char/virtio_console.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) -- Yoshihiro YUNOMAE Software Platform Research Dept. Linux Technology Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: yoshihiro.yunomae.ez@xxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html