From: Sasha Levin <sashal@kernel•org>
To: stable@vger•kernel.org, linux-kernel@vger•kernel.org
Cc: Daniel Borkmann <daniel@iogearbox•net>,
Sandipan Das <sandipan@linux•vnet.ibm.com>,
Song Liu <songliubraving@fb•com>,
Alexei Starovoitov <ast@kernel•org>,
Sasha Levin <sashal@kernel•org>,
netdev@vger•kernel.org
Subject: [PATCH AUTOSEL 4.18 10/59] bpf: fix bpf_prog_get_info_by_fd to return 0 func_lens for unpriv
Date: Wed, 14 Nov 2018 17:22:42 -0500 [thread overview]
Message-ID: <20181114222335.99339-10-sashal@kernel.org> (raw)
In-Reply-To: <20181114222335.99339-1-sashal@kernel.org>
From: Daniel Borkmann <daniel@iogearbox•net>
[ Upstream commit 28c2fae726bf5003cd209b0d5910a642af98316f ]
While dbecd7388476 ("bpf: get kernel symbol addresses via syscall")
zeroed info.nr_jited_ksyms in bpf_prog_get_info_by_fd() for queries
from unprivileged users, commit 815581c11cc2 ("bpf: get JITed image
lengths of functions via syscall") forgot about doing so and therefore
returns the #elems of the user set up buffer which is incorrect. It
also needs to indicate a info.nr_jited_func_lens of zero.
Fixes: 815581c11cc2 ("bpf: get JITed image lengths of functions via syscall")
Signed-off-by: Daniel Borkmann <daniel@iogearbox•net>
Cc: Sandipan Das <sandipan@linux•vnet.ibm.com>
Cc: Song Liu <songliubraving@fb•com>
Signed-off-by: Alexei Starovoitov <ast@kernel•org>
Signed-off-by: Sasha Levin <sashal@kernel•org>
---
kernel/bpf/syscall.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index a31a1ba0f8ea..482215292b0f 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -1896,6 +1896,7 @@ static int bpf_prog_get_info_by_fd(struct bpf_prog *prog,
info.jited_prog_len = 0;
info.xlated_prog_len = 0;
info.nr_jited_ksyms = 0;
+ info.nr_jited_func_lens = 0;
goto done;
}
--
2.17.1
next prev parent reply other threads:[~2018-11-15 8:29 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20181114222335.99339-1-sashal@kernel.org>
2018-11-14 22:22 ` [PATCH AUTOSEL 4.18 05/59] netfilter: ipset: list:set: Decrease refcount synchronously on deletion and replace Sasha Levin
2018-11-14 22:22 ` [PATCH AUTOSEL 4.18 06/59] netfilter: ipset: actually allow allowable CIDR 0 in hash:net,port,net Sasha Levin
2018-11-14 22:22 ` [PATCH AUTOSEL 4.18 07/59] netfilter: ipset: fix ip_set_list allocation failure Sasha Levin
2018-11-14 22:22 ` Sasha Levin [this message]
2018-11-14 22:22 ` [PATCH AUTOSEL 4.18 11/59] usbnet: smsc95xx: disable carrier check while suspending Sasha Levin
2018-11-14 22:22 ` [PATCH AUTOSEL 4.18 12/59] net: dsa: microchip: initialize mutex before use Sasha Levin
2018-11-14 22:22 ` [PATCH AUTOSEL 4.18 13/59] net: bcmgenet: protect stop from timeout Sasha Levin
2018-11-14 22:22 ` [PATCH AUTOSEL 4.18 14/59] net: systemport: Protect " Sasha Levin
2018-11-14 22:22 ` [PATCH AUTOSEL 4.18 16/59] netfilter: xt_IDLETIMER: add sysfs filename checking routine Sasha Levin
2018-11-14 22:22 ` [PATCH AUTOSEL 4.18 17/59] netfilter: ipset: Fix calling ip_set() macro at dumping Sasha Levin
2018-11-14 22:22 ` [PATCH AUTOSEL 4.18 18/59] netfilter: nft_compat: ebtables 'nat' table is normal chain type Sasha Levin
2018-11-14 22:22 ` [PATCH AUTOSEL 4.18 20/59] net: hns3: Fix for out-of-bounds access when setting pfc back pressure Sasha Levin
2018-11-14 22:22 ` [PATCH AUTOSEL 4.18 21/59] mlxsw: spectrum: Fix IP2ME CPU policer configuration Sasha Levin
2018-11-14 22:22 ` [PATCH AUTOSEL 4.18 23/59] net: phy: realtek: fix RTL8201F sysfs name Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 43/59] ice: Fix dead device link issue with flow control Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 44/59] ice: Fix the bytecount sent to netdev_tx_sent_queue Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 45/59] i40e: restore NETIF_F_GSO_IPXIP[46] to netdev features Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 46/59] ibmvnic: fix accelerated VLAN handling Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 47/59] qed: Fix memory/entry leak in qed_init_sp_request() Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 48/59] qed: Fix blocking/unlimited SPQ entries leak Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 49/59] qed: Fix SPQ entries not returned to pool in error flows Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 50/59] qed: Fix potential memory corruption Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 51/59] net: stmmac: Fix RX packet size > 8191 Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 52/59] net: smsc95xx: Fix MTU range Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 54/59] net: aquantia: fix potential IOMMU fault after driver unbind Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 55/59] net: aquantia: fixed enable unicast on 32 macvlan Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 56/59] net: aquantia: invalid checksumm offload implementation Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 57/59] net: qualcomm: rmnet: Fix incorrect assignment of real_dev Sasha Levin
2018-11-14 22:23 ` [PATCH AUTOSEL 4.18 59/59] net: dsa: mv88e6xxx: Fix clearing of stats counters Sasha Levin
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