From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Remi Pommarel <repk@triplefau.lt>,
Johannes Berg <johannes.berg@intel.com>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.14 37/51] mac80211: mesh: Free ie data when leaving mesh
Date: Mon, 3 Aug 2020 14:20:22 +0200 [thread overview]
Message-ID: <20200803121851.349988326@linuxfoundation.org> (raw)
In-Reply-To: <20200803121849.488233135@linuxfoundation.org>
From: Remi Pommarel <repk@triplefau.lt>
[ Upstream commit 6a01afcf8468d3ca2bd8bbb27503f60dcf643b20 ]
At ieee80211_join_mesh() some ie data could have been allocated (see
copy_mesh_setup()) and need to be cleaned up when leaving the mesh.
This fixes the following kmemleak report:
unreferenced object 0xffff0000116bc600 (size 128):
comm "wpa_supplicant", pid 608, jiffies 4294898983 (age 293.484s)
hex dump (first 32 bytes):
30 14 01 00 00 0f ac 04 01 00 00 0f ac 04 01 00 0...............
00 0f ac 08 00 00 00 00 c4 65 40 00 00 00 00 00 .........e@.....
backtrace:
[<00000000bebe439d>] __kmalloc_track_caller+0x1c0/0x330
[<00000000a349dbe1>] kmemdup+0x28/0x50
[<0000000075d69baa>] ieee80211_join_mesh+0x6c/0x3b8 [mac80211]
[<00000000683bb98b>] __cfg80211_join_mesh+0x1e8/0x4f0 [cfg80211]
[<0000000072cb507f>] nl80211_join_mesh+0x520/0x6b8 [cfg80211]
[<0000000077e9bcf9>] genl_family_rcv_msg+0x374/0x680
[<00000000b1bd936d>] genl_rcv_msg+0x78/0x108
[<0000000022c53788>] netlink_rcv_skb+0xb0/0x1c0
[<0000000011af8ec9>] genl_rcv+0x34/0x48
[<0000000069e41f53>] netlink_unicast+0x268/0x2e8
[<00000000a7517316>] netlink_sendmsg+0x320/0x4c0
[<0000000069cba205>] ____sys_sendmsg+0x354/0x3a0
[<00000000e06bab0f>] ___sys_sendmsg+0xd8/0x120
[<0000000037340728>] __sys_sendmsg+0xa4/0xf8
[<000000004fed9776>] __arm64_sys_sendmsg+0x44/0x58
[<000000001c1e5647>] el0_svc_handler+0xd0/0x1a0
Fixes: c80d545da3f7 (mac80211: Let userspace enable and configure vendor specific path selection.)
Signed-off-by: Remi Pommarel <repk@triplefau.lt>
Link: https://lore.kernel.org/r/20200704135007.27292-1-repk@triplefau.lt
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/cfg.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index b1484b8316e87..c883cb67b7311 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1997,6 +1997,7 @@ static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
ieee80211_stop_mesh(sdata);
mutex_lock(&sdata->local->mtx);
ieee80211_vif_release_channel(sdata);
+ kfree(sdata->u.mesh.ie);
mutex_unlock(&sdata->local->mtx);
return 0;
--
2.25.1
next prev parent reply other threads:[~2020-08-03 12:35 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-03 12:19 [PATCH 4.14 00/51] 4.14.192-rc1 review Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.14 01/51] scsi: libsas: direct call probe and destruct Greg Kroah-Hartman
2020-08-03 12:57 ` John Garry
2020-08-05 9:52 ` Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.14 02/51] net: phy: mdio-bcm-unimac: fix potential NULL dereference in unimac_mdio_probe() Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.14 03/51] crypto: ccp - Release all allocated memory if sha type is invalid Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.14 04/51] media: rc: prevent memory leak in cx23888_ir_probe Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.14 05/51] iio: imu: adis16400: fix memory leak Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.14 06/51] ath9k_htc: release allocated buffer if timed out Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.14 07/51] ath9k: " Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.14 08/51] x86/kvm: Be careful not to clear KVM_VCPU_FLUSH_TLB bit Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.14 09/51] PCI/ASPM: Disable ASPM on ASMedia ASM1083/1085 PCIe-to-PCI bridge Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.14 10/51] wireless: Use offsetof instead of custom macro Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.14 11/51] ARM: 8986/1: hw_breakpoint: Dont invoke overflow handler on uaccess watchpoints Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.14 12/51] random32: update the net random state on interrupt and activity Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.14 13/51] ARM: percpu.h: fix build error Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.14 14/51] drm/amdgpu: Prevent kernel-infoleak in amdgpu_info_ioctl() Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 15/51] drm: hold gem reference until object is no longer accessed Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 16/51] f2fs: check memory boundary by insane namelen Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 17/51] f2fs: check if file namelen exceeds max value Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 18/51] random: fix circular include dependency on arm64 after addition of percpu.h Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 19/51] random32: remove net_rand_state from the latent entropy gcc plugin Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 20/51] 9p/trans_fd: abort p9_read_work if req status changed Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 21/51] 9p/trans_fd: Fix concurrency del of req_list in p9_fd_cancelled/p9_read_work Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 22/51] x86/build/lto: Fix truncated .bss with -fdata-sections Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 23/51] x86, vmlinux.lds: Page-align end of ..page_aligned sections Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 24/51] rds: Prevent kernel-infoleak in rds_notify_queue_get() Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 25/51] xfs: fix missed wakeup on l_flush_wait Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 26/51] net/x25: Fix x25_neigh refcnt leak when x25 disconnect Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 27/51] net/x25: Fix null-ptr-deref in x25_disconnect Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 28/51] selftests/net: rxtimestamp: fix clang issues for target arch PowerPC Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 29/51] sh: Fix validation of system call number Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 30/51] net: lan78xx: add missing endpoint sanity check Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 31/51] net: lan78xx: fix transfer-buffer memory leak Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 32/51] mlx4: disable device on shutdown Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 33/51] mlxsw: core: Increase scope of RCU read-side critical section Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 34/51] mlxsw: core: Free EMAD transactions using kfree_rcu() Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 35/51] ibmvnic: Fix IRQ mapping disposal in error path Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 36/51] bpf: Fix map leak in HASH_OF_MAPS map Greg Kroah-Hartman
2020-08-03 12:20 ` Greg Kroah-Hartman [this message]
2020-08-03 12:20 ` [PATCH 4.14 38/51] mac80211: mesh: Free pending skb when destroying a mpath Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 39/51] arm64/alternatives: move length validation inside the subsection Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 40/51] arm64: csum: Fix handling of bad packets Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 41/51] usb: hso: Fix debug compile warning on sparc32 Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 42/51] qed: Disable "MFW indication via attention" SPAM every 5 minutes Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 43/51] nfc: s3fwrn5: add missing release on skb in s3fwrn5_recv_frame Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 44/51] parisc: add support for cmpxchg on u8 pointers Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 45/51] net: ethernet: ravb: exit if re-initialization fails in tx timeout Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 46/51] Revert "i2c: cadence: Fix the hold bit setting" Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 47/51] x86/unwind/orc: Fix ORC for newly forked tasks Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 48/51] cxgb4: add missing release on skb in uld_send() Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 49/51] xen-netfront: fix potential deadlock in xennet_remove() Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 50/51] KVM: LAPIC: Prevent setting the tscdeadline timer if the lapic is hw disabled Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.14 51/51] x86/i8259: Use printk_deferred() to prevent deadlock Greg Kroah-Hartman
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