From: Hangyu Hua hbh25y@gmail.com
stable inclusion from stable-v5.10.150 commit 7ba19a60c74fb0057d4daef2fa2cbfc9522f3ba1 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I6D0XA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit c3b69ba5114c860d730870c03ab4ee45276e5e35 ]
eventfd_ctx_put need to be called to put the refcount that gotten by eventfd_ctx_fdget when ocxl_irq_set_handler fails.
Fixes: 060146614643 ("ocxl: move event_fd handling to frontend") Acked-by: Frederic Barrat fbarrat@linux.ibm.com Signed-off-by: Hangyu Hua hbh25y@gmail.com Link: https://lore.kernel.org/r/20220824082600.36159-1-hbh25y@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Jialin Zhang zhangjialin11@huawei.com --- drivers/misc/ocxl/file.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/misc/ocxl/file.c b/drivers/misc/ocxl/file.c index c742ab02ae18..e094809b54ff 100644 --- a/drivers/misc/ocxl/file.c +++ b/drivers/misc/ocxl/file.c @@ -259,6 +259,8 @@ static long afu_ioctl(struct file *file, unsigned int cmd, if (IS_ERR(ev_ctx)) return PTR_ERR(ev_ctx); rc = ocxl_irq_set_handler(ctx, irq_id, irq_handler, irq_free, ev_ctx); + if (rc) + eventfd_ctx_put(ev_ctx); break;
case OCXL_IOCTL_GET_METADATA: