diff options
Diffstat (limited to 'debian/patches-rt/0312-aio-Fix-incorrect-usage-of-eventfd_signal_allowed.patch')
| -rw-r--r-- | debian/patches-rt/0312-aio-Fix-incorrect-usage-of-eventfd_signal_allowed.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/debian/patches-rt/0312-aio-Fix-incorrect-usage-of-eventfd_signal_allowed.patch b/debian/patches-rt/0312-aio-Fix-incorrect-usage-of-eventfd_signal_allowed.patch new file mode 100644 index 000000000..978a2de7d --- /dev/null +++ b/debian/patches-rt/0312-aio-Fix-incorrect-usage-of-eventfd_signal_allowed.patch @@ -0,0 +1,38 @@ +From fd840c98e310adf2a03ee242969a9597a909a672 Mon Sep 17 00:00:00 2001 +From: Xie Yongji <xieyongji@bytedance.com> +Date: Mon, 13 Sep 2021 19:19:28 +0800 +Subject: [PATCH 312/323] aio: Fix incorrect usage of eventfd_signal_allowed() +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz + +commit 4b3749865374899e115aa8c48681709b086fe6d3 upstream. + +We should defer eventfd_signal() to the workqueue when +eventfd_signal_allowed() return false rather than return +true. + +Fixes: b542e383d8c0 ("eventfd: Make signal recursion protection a task bit") +Signed-off-by: Xie Yongji <xieyongji@bytedance.com> +Link: https://lore.kernel.org/r/20210913111928.98-1-xieyongji@bytedance.com +Reviewed-by: Eric Biggers <ebiggers@google.com> +Signed-off-by: Eric Biggers <ebiggers@google.com> +Signed-off-by: Luis Claudio R. Goncalves <lgoncalv@redhat.com> +--- + fs/aio.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/fs/aio.c b/fs/aio.c +index e1181dc37be1..e88fd9b58f3f 100644 +--- a/fs/aio.c ++++ b/fs/aio.c +@@ -1765,7 +1765,7 @@ static int aio_poll_wake(struct wait_queue_entry *wait, unsigned mode, int sync, + list_del_init(&req->wait.entry); + list_del(&iocb->ki_list); + iocb->ki_res.res = mangle_poll(mask); +- if (iocb->ki_eventfd && eventfd_signal_allowed()) { ++ if (iocb->ki_eventfd && !eventfd_signal_allowed()) { + iocb = NULL; + INIT_WORK(&req->work, aio_poll_put_work); + schedule_work(&req->work); +-- +2.43.0 + |