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misc: ocxl: fix possible refcount leak in afu_ioctl()

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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: 0601466146 ("ocxl: move event_fd handling to frontend")
Acked-by: Frederic Barrat <[email protected]>
Signed-off-by: Hangyu Hua <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
This commit is contained in:
Hangyu Hua 2022-08-24 16:26:00 +08:00 • committed by Greg Kroah-Hartman
commit fc797285c4
1 changed files with 2 additions and 0 deletions
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2
drivers/misc/ocxl/file.c
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@ -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: