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authorPavel Begunkov <asml.silence@gmail.com>2020-12-31 00:34:16 +0300
committerJens Axboe <axboe@kernel.dk>2020-12-31 05:36:54 +0300
commitb1b6b5a30dce872f500dc43f067cba8e7f86fc7d (patch)
tree0deae7b9298a78c4f63a4fdd9924eb3ee4f5876d /kernel
parent1ffc54220c444774b7f09e6d2121e732f8e19b94 (diff)
downloadlinux-b1b6b5a30dce872f500dc43f067cba8e7f86fc7d.tar.xz
kernel/io_uring: cancel io_uring before task works
For cancelling io_uring requests it needs either to be able to run currently enqueued task_works or having it shut down by that moment. Otherwise io_uring_cancel_files() may be waiting for requests that won't ever complete. Go with the first way and do cancellations before setting PF_EXITING and so before putting the task_work infrastructure into a transition state where task_work_run() would better not be called. Cc: stable@vger.kernel.org # 5.5+ Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/exit.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/exit.c b/kernel/exit.c
index 3594291a8542..04029e35e69a 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -63,6 +63,7 @@
#include <linux/random.h>
#include <linux/rcuwait.h>
#include <linux/compat.h>
+#include <linux/io_uring.h>
#include <linux/uaccess.h>
#include <asm/unistd.h>
@@ -776,6 +777,7 @@ void __noreturn do_exit(long code)
schedule();
}
+ io_uring_files_cancel(tsk->files);
exit_signals(tsk); /* sets PF_EXITING */
/* sync mm's RSS info before statistics gathering */