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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 5.7 079/120] mac80211: mesh: Free pending skb when destroying a mpath
Date: Mon,  3 Aug 2020 14:18:57 +0200	[thread overview]
Message-ID: <20200803121906.683861064@linuxfoundation.org> (raw)
In-Reply-To: <20200803121902.860751811@linuxfoundation.org>

From: Remi Pommarel <repk@triplefau.lt>

[ Upstream commit 5e43540c2af0a0c0a18e39579b1ad49541f87506 ]

A mpath object can hold reference on a list of skb that are waiting for
mpath resolution to be sent. When destroying a mpath this skb list
should be cleaned up in order to not leak memory.

Fixing that kind of leak:

unreferenced object 0xffff0000181c9300 (size 1088):
  comm "openvpn", pid 1782, jiffies 4295071698 (age 80.416s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 f9 80 36 00 00 00 00 00  ..........6.....
    02 00 07 40 00 00 00 00 00 00 00 00 00 00 00 00  ...@............
  backtrace:
    [<000000004bc6a443>] kmem_cache_alloc+0x1a4/0x2f0
    [<000000002caaef13>] sk_prot_alloc.isra.39+0x34/0x178
    [<00000000ceeaa916>] sk_alloc+0x34/0x228
    [<00000000ca1f1d04>] inet_create+0x198/0x518
    [<0000000035626b1c>] __sock_create+0x134/0x328
    [<00000000a12b3a87>] __sys_socket+0xb0/0x158
    [<00000000ff859f23>] __arm64_sys_socket+0x40/0x58
    [<00000000263486ec>] el0_svc_handler+0xd0/0x1a0
    [<0000000005b5157d>] el0_svc+0x8/0xc
unreferenced object 0xffff000012973a40 (size 216):
  comm "openvpn", pid 1782, jiffies 4295082137 (age 38.660s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 c0 06 16 00 00 ff ff 00 93 1c 18 00 00 ff ff  ................
  backtrace:
    [<000000004bc6a443>] kmem_cache_alloc+0x1a4/0x2f0
    [<0000000023c8c8f9>] __alloc_skb+0xc0/0x2b8
    [<000000007ad950bb>] alloc_skb_with_frags+0x60/0x320
    [<00000000ef90023a>] sock_alloc_send_pskb+0x388/0x3c0
    [<00000000104fb1a3>] sock_alloc_send_skb+0x1c/0x28
    [<000000006919d2dd>] __ip_append_data+0xba4/0x11f0
    [<0000000083477587>] ip_make_skb+0x14c/0x1a8
    [<0000000024f3d592>] udp_sendmsg+0xaf0/0xcf0
    [<000000005aabe255>] inet_sendmsg+0x5c/0x80
    [<000000008651ea08>] __sys_sendto+0x15c/0x218
    [<000000003505c99b>] __arm64_sys_sendto+0x74/0x90
    [<00000000263486ec>] el0_svc_handler+0xd0/0x1a0
    [<0000000005b5157d>] el0_svc+0x8/0xc

Fixes: 2bdaf386f99c (mac80211: mesh: move path tables into if_mesh)
Signed-off-by: Remi Pommarel <repk@triplefau.lt>
Link: https://lore.kernel.org/r/20200704135419.27703-1-repk@triplefau.lt
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/mac80211/mesh_pathtbl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index 117519bf33d65..aca608ae313fe 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -521,6 +521,7 @@ static void mesh_path_free_rcu(struct mesh_table *tbl,
 	del_timer_sync(&mpath->timer);
 	atomic_dec(&sdata->u.mesh.mpaths);
 	atomic_dec(&tbl->entries);
+	mesh_path_flush_pending(mpath);
 	kfree_rcu(mpath, rcu);
 }
 
-- 
2.25.1




  parent reply	other threads:[~2020-08-03 12:24 UTC|newest]

Thread overview: 134+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-03 12:17 [PATCH 5.7 000/120] 5.7.13-rc1 review Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 001/120] sunrpc: check that domain table is empty at module unload Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 002/120] PCI/ASPM: Disable ASPM on ASMedia ASM1083/1085 PCIe-to-PCI bridge Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 003/120] ALSA: usb-audio: Add implicit feedback quirk for SSL2 Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 004/120] ALSA: hda/realtek: enable headset mic of ASUS ROG Zephyrus G15(GA502) series with ALC289 Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 005/120] ALSA: hda/realtek: typo_fix: enable headset mic of ASUS ROG Zephyrus G14(GA401) " Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 006/120] ALSA: hda/realtek: Fix add a "ultra_low_power" function for intel reference board (alc256) Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 007/120] ALSA: hda/realtek - Fixed HP right speaker no sound Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 008/120] ALSA: hda: Workaround for spurious wakeups on some Intel platforms Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 009/120] ALSA: hda/hdmi: Fix keep_power assignment for non-component devices Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 010/120] RDMA/mlx5: Fix prefetch memory leak if get_prefetchable_mr fails Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 011/120] IB/rdmavt: Fix RQ counting issues causing use of an invalid RWQE Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 012/120] vhost/scsi: fix up req type endian-ness Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 013/120] 9p/trans_fd: Fix concurrency del of req_list in p9_fd_cancelled/p9_read_work Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 014/120] revert: 1320a4052ea1 ("audit: trigger accompanying records when no rules present") Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 015/120] ARM: 8986/1: hw_breakpoint: Dont invoke overflow handler on uaccess watchpoints Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 016/120] ARM: 8987/1: VDSO: Fix incorrect clock_gettime64 Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 017/120] ARM: dts: imx6sx-sabreauto: Fix the phy-mode on fec2 Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 018/120] ARM: dts: imx6sx-sdb: " Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 019/120] ARM: dts: imx6qdl-icore: Fix OTG_ID pin and sdcard detect Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 020/120] virtio_balloon: fix up endian-ness for free cmd id Greg Kroah-Hartman
2020-08-03 12:17 ` [PATCH 5.7 021/120] random32: update the net random state on interrupt and activity Greg Kroah-Hartman
2020-08-04  3:06   ` Willy Tarreau
2020-08-03 12:18 ` [PATCH 5.7 022/120] ARM: percpu.h: fix build error Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 023/120] Revert "drm/amdgpu: Fix NULL dereference in dpm sysfs handlers" Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 024/120] drm/amd/display: Clear dm_state for fast updates Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 025/120] drm/amdgpu: Prevent kernel-infoleak in amdgpu_info_ioctl() Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 026/120] drm/dbi: Fix SPI Type 1 (9-bit) transfer Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 027/120] drm/mcde: Fix stability issue Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 028/120] drm: hold gem reference until object is no longer accessed Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 029/120] drm: of: Fix double-free bug Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 030/120] random: fix circular include dependency on arm64 after addition of percpu.h Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 031/120] random32: remove net_rand_state from the latent entropy gcc plugin Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 032/120] rds: Prevent kernel-infoleak in rds_notify_queue_get() Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 033/120] libtraceevent: Fix build with binutils 2.35 Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 034/120] net/x25: Fix x25_neigh refcnt leak when x25 disconnect Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 035/120] net/x25: Fix null-ptr-deref in x25_disconnect Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 036/120] xfrm: policy: match with both mark and mask on user interfaces Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 037/120] ARM: dts sunxi: Relax a bit the CMA pool allocation range Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 038/120] pinctrl: qcom: Handle broken/missing PDC dual edge IRQs on sc7180 Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 039/120] espintcp: recv() should return 0 when the peer socket is closed Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 040/120] xfrm: Fix crash when the hold queue is used Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 041/120] ARM: dts: armada-38x: fix NETA lockup when repeatedly switching speeds Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 042/120] nvme-tcp: fix possible hang waiting for icresp response Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 043/120] selftests/net: rxtimestamp: fix clang issues for target arch PowerPC Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 044/120] selftests/net: psock_fanout: " Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 045/120] selftests/net: so_txtime: " Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 046/120] selftests/net: tcp_mmap: fix clang warning " Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 047/120] sh/tlb: Fix PGTABLE_LEVELS > 2 Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 048/120] sh: Fix validation of system call number Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 049/120] net: hns3: fix desc filling bug when skb is expanded or lineared Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 050/120] net: hns3: fix a TX timeout issue Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 051/120] net: hns3: add reset check for VF updating port based VLAN Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 052/120] net: hns3: fix aRFS FD rules leftover after add a user FD rule Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 053/120] net: hns3: fix for VLAN config when reset failed Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 054/120] net/mlx5: E-switch, Destroy TSAR when fail to enable the mode Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 055/120] net/mlx5: E-switch, Destroy TSAR after reload interface Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 056/120] net/mlx5e: Fix error path of device attach Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 057/120] net/mlx5: Fix a bug of using ptp channel index as pin index Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 058/120] net/mlx5: Verify Hardware supports requested ptp function on a given pin Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 059/120] net/mlx5: Query PPS pin operational status before registering it Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 060/120] net/mlx5e: Modify uplink state on interface up/down Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 061/120] net/mlx5e: Fix kernel crash when setting vf VLANID on a VF dev Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 062/120] net: lan78xx: add missing endpoint sanity check Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 063/120] net: lan78xx: fix transfer-buffer memory leak Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 064/120] rhashtable: Fix unprotected RCU dereference in __rht_ptr Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 065/120] mlx4: disable device on shutdown Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 066/120] octeontx2-pf: Fix reset_task bugs Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 067/120] octeontx2-pf: cancel reset_task work Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 068/120] octeontx2-pf: Unregister netdev at driver remove Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 069/120] bareudp: forbid mixing IP and MPLS in multiproto mode Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 070/120] nvme: add a Identify Namespace Identification Descriptor list quirk Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 071/120] mlxsw: core: Increase scope of RCU read-side critical section Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 072/120] mlxsw: core: Free EMAD transactions using kfree_rcu() Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 073/120] mlxsw: spectrum_router: Fix use-after-free in router init / de-init Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 074/120] selftests: ethtool: Fix test when only two speeds are supported Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 075/120] ibmvnic: Fix IRQ mapping disposal in error path Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 076/120] bpf: Fix map leak in HASH_OF_MAPS map Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 077/120] espintcp: handle short messages instead of breaking the encap socket Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 078/120] mac80211: mesh: Free ie data when leaving mesh Greg Kroah-Hartman
2020-08-03 12:18 ` Greg Kroah-Hartman [this message]
2020-08-03 12:18 ` [PATCH 5.7 080/120] RDMA/core: Stop DIM before destroying CQ Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.7 081/120] RDMA/core: Free DIM memory in error unwind Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 082/120] arm64/alternatives: move length validation inside the subsection Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 083/120] arm64: csum: Fix handling of bad packets Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 084/120] Bluetooth: fix kernel oops in store_pending_adv_report Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 085/120] selftests/bpf: fix netdevsim trap_flow_action_cookie read Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 086/120] net: nixge: fix potential memory leak in nixge_probe() Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 087/120] net: ethernet: mtk_eth_soc: fix MTU warnings Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 088/120] ionic: unlock queue mutex in error path Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 089/120] net: gemini: Fix missing clk_disable_unprepare() in error path of gemini_ethernet_port_probe() Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 090/120] net/mlx5e: E-Switch, Add misc bit when misc fields changed for mirroring Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 091/120] net/mlx5e: fix bpf_prog reference count leaks in mlx5e_alloc_rq Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 092/120] perf tools: Fix record failure when mixed with ARM SPE event Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 093/120] vxlan: fix memleak of fdb Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 094/120] mt76: mt7615: fix lmac queue debugsfs entry Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 095/120] iwlwifi: fix crash in iwl_dbg_tlv_alloc_trigger Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 096/120] usb: hso: Fix debug compile warning on sparc32 Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 097/120] selftests: fib_nexthop_multiprefix: fix cleanup() netns deletion Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 098/120] qed: Disable "MFW indication via attention" SPAM every 5 minutes Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 099/120] selftests: net: ip_defrag: modprobe missing nf_defrag_ipv6 support Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 100/120] io_uring: always allow drain/link/hardlink/async sqe flags Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 101/120] habanalabs: prevent possible out-of-bounds array access Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 102/120] nfc: s3fwrn5: add missing release on skb in s3fwrn5_recv_frame Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 103/120] scsi: core: Run queue in case of I/O resource contention failure Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 104/120] riscv: kasan: use local_tlb_flush_all() to avoid uninitialized __sbi_rfence Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 105/120] parisc: add support for cmpxchg on u8 pointers Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 106/120] net: ethernet: ravb: exit if re-initialization fails in tx timeout Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 107/120] selftest: txtimestamp: fix net ns entry logic Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 108/120] Revert "i2c: cadence: Fix the hold bit setting" Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 109/120] i2c: cadence: Clear HOLD bit at correct time in Rx path Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 110/120] x86/unwind/orc: Fix ORC for newly forked tasks Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 111/120] x86/stacktrace: Fix reliable check for empty user task stacks Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 112/120] cxgb4: add missing release on skb in uld_send() Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 113/120] xen-netfront: fix potential deadlock in xennet_remove() Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 114/120] RISC-V: Set maximum number of mapped pages correctly Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 115/120] drivers/net/wan: lapb: Corrected the usage of skb_cow Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 116/120] riscv: Parse all memory blocks to remove unusable memory Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 117/120] KVM: arm64: Dont inherit exec permission across page-table levels Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 118/120] KVM: LAPIC: Prevent setting the tscdeadline timer if the lapic is hw disabled Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 119/120] KVM: SVM: Fix disable pause loop exit/pause filtering capability on SVM Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.7 120/120] x86/i8259: Use printk_deferred() to prevent deadlock Greg Kroah-Hartman
2020-08-03 15:58 ` [PATCH 5.7 000/120] 5.7.13-rc1 review Guenter Roeck
2020-08-03 17:33   ` Greg Kroah-Hartman
2020-08-03 20:33     ` Geert Uytterhoeven
2020-08-04  3:01       ` Guenter Roeck
2020-08-04  3:09         ` Willy Tarreau
2020-08-04  3:12         ` Linus Torvalds
2020-08-04  4:14           ` Guenter Roeck
2020-08-04  5:58           ` Guenter Roeck
2020-08-04  6:11             ` Greg Kroah-Hartman
2020-08-04  6:33             ` Linus Torvalds
2020-08-04  6:52               ` Greg Kroah-Hartman
2020-08-04  0:26     ` Guenter Roeck

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