diff options
| author | Eric Dumazet <edumazet@google.com> | 2024-12-16 08:37:03 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-27 14:02:04 +0100 |
| commit | 5c553262f063b3bf85df3b22a9818a8d92510f4d (patch) | |
| tree | b169543da4f1ad2b848eb09c2f86741f664f0c66 | |
| parent | b3b49641a99bec13206670683ad8e89c8e3055df (diff) | |
net: netdevsim: fix nsim_pp_hold_write()
[ Upstream commit b9b8301d369b4c876de5255dbf067b19ba88ac71 ]
nsim_pp_hold_write() has two problems:
1) It may return with rtnl held, as found by syzbot.
2) Its return value does not propagate an error if any.
Fixes: 1580cbcbfe77 ("net: netdevsim: add some fake page pool use")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20241216083703.1859921-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/netdevsim/netdev.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/netdevsim/netdev.c b/drivers/net/netdevsim/netdev.c index 017a6102be0a..1b29d1d794a2 100644 --- a/drivers/net/netdevsim/netdev.c +++ b/drivers/net/netdevsim/netdev.c @@ -596,10 +596,10 @@ nsim_pp_hold_write(struct file *file, const char __user *data, page_pool_put_full_page(ns->page->pp, ns->page, false); ns->page = NULL; } - rtnl_unlock(); exit: - return count; + rtnl_unlock(); + return ret; } static const struct file_operations nsim_pp_hold_fops = { |