io_uring: do sqo disable on install_fd error
stable inclusion from stable-5.10.12 commit 8cb6f4da831bc51145aee3a923f03114121dea6b bugzilla: 47876 -------------------------------- [ Upstream commit 06585c49 ] WARNING: CPU: 0 PID: 8494 at fs/io_uring.c:8717 io_ring_ctx_wait_and_kill+0x4f2/0x600 fs/io_uring.c:8717 Call Trace: io_uring_release+0x3e/0x50 fs/io_uring.c:8759 __fput+0x283/0x920 fs/file_table.c:280 task_work_run+0xdd/0x190 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x249/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:302 entry_SYSCALL_64_after_hwframe+0x44/0xa9 failed io_uring_install_fd() is a special case, we don't do io_ring_ctx_wait_and_kill() directly but defer it to fput, though still need to io_disable_sqo_submit() before. note: it doesn't fix any real problem, just a warning. That's because sqring won't be available to the userspace in this case and so SQPOLL won't submit anything. Cc: stable@vger.kernel.org # 5.5+ Reported-by: syzbot+9c9c35374c0ecac06516@syzkaller.appspotmail.com Fixes: d9d05217 ("io_uring: stop SQPOLL submit on creator's death") Signed-off-by: NPavel Begunkov <asml.silence@gmail.com> Signed-off-by: NJens Axboe <axboe@kernel.dk> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NChen Jun <chenjun102@huawei.com> Acked-by: NXie XiuQi <xiexiuqi@huawei.com> Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
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