From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
"Alexandru Herghelegiu" <aherghelegiu@bitdefender.com>,
"Adalbert Lazăr" <alazar@bitdefender.com>,
"Stefan Hajnoczi" <stefanha@redhat.com>,
"Stefano Garzarella" <sgarzare@redhat.com>,
"David S. Miller" <davem@davemloft.net>
Subject: [PATCH 5.0 29/43] vsock/virtio: fix kernel panic from virtio_transport_reset_no_sock
Date: Mon, 18 Mar 2019 10:24:21 +0100 [thread overview]
Message-ID: <20190318083716.728432293@linuxfoundation.org> (raw)
In-Reply-To: <20190318083715.877441740@linuxfoundation.org>
5.0-stable review patch. If anyone has any objections, please let me know.
------------------
From: "Adalbert Lazăr" <alazar@bitdefender.com>
[ Upstream commit 4c404ce23358d5d8fbdeb7a6021a9b33d3c3c167 ]
Previous to commit 22b5c0b63f32 ("vsock/virtio: fix kernel panic
after device hot-unplug"), vsock_core_init() was called from
virtio_vsock_probe(). Now, virtio_transport_reset_no_sock() can be called
before vsock_core_init() has the chance to run.
[Wed Feb 27 14:17:09 2019] BUG: unable to handle kernel NULL pointer dereference at 0000000000000110
[Wed Feb 27 14:17:09 2019] #PF error: [normal kernel read fault]
[Wed Feb 27 14:17:09 2019] PGD 0 P4D 0
[Wed Feb 27 14:17:09 2019] Oops: 0000 [#1] SMP PTI
[Wed Feb 27 14:17:09 2019] CPU: 3 PID: 59 Comm: kworker/3:1 Not tainted 5.0.0-rc7-390-generic-hvi #390
[Wed Feb 27 14:17:09 2019] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[Wed Feb 27 14:17:09 2019] Workqueue: virtio_vsock virtio_transport_rx_work [vmw_vsock_virtio_transport]
[Wed Feb 27 14:17:09 2019] RIP: 0010:virtio_transport_reset_no_sock+0x8c/0xc0 [vmw_vsock_virtio_transport_common]
[Wed Feb 27 14:17:09 2019] Code: 35 8b 4f 14 48 8b 57 08 31 f6 44 8b 4f 10 44 8b 07 48 8d 7d c8 e8 84 f8 ff ff 48 85 c0 48 89 c3 74 2a e8 f7 31 03 00 48 89 df <48> 8b 80 10 01 00 00 e8 68 fb 69 ed 48 8b 75 f0 65 48 33 34 25 28
[Wed Feb 27 14:17:09 2019] RSP: 0018:ffffb42701ab7d40 EFLAGS: 00010282
[Wed Feb 27 14:17:09 2019] RAX: 0000000000000000 RBX: ffff9d79637ee080 RCX: 0000000000000003
[Wed Feb 27 14:17:09 2019] RDX: 0000000000000001 RSI: 0000000000000002 RDI: ffff9d79637ee080
[Wed Feb 27 14:17:09 2019] RBP: ffffb42701ab7d78 R08: ffff9d796fae70e0 R09: ffff9d796f403500
[Wed Feb 27 14:17:09 2019] R10: ffffb42701ab7d90 R11: 0000000000000000 R12: ffff9d7969d09240
[Wed Feb 27 14:17:09 2019] R13: ffff9d79624e6840 R14: ffff9d7969d09318 R15: ffff9d796d48ff80
[Wed Feb 27 14:17:09 2019] FS: 0000000000000000(0000) GS:ffff9d796fac0000(0000) knlGS:0000000000000000
[Wed Feb 27 14:17:09 2019] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[Wed Feb 27 14:17:09 2019] CR2: 0000000000000110 CR3: 0000000427f22000 CR4: 00000000000006e0
[Wed Feb 27 14:17:09 2019] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[Wed Feb 27 14:17:09 2019] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[Wed Feb 27 14:17:09 2019] Call Trace:
[Wed Feb 27 14:17:09 2019] virtio_transport_recv_pkt+0x63/0x820 [vmw_vsock_virtio_transport_common]
[Wed Feb 27 14:17:09 2019] ? kfree+0x17e/0x190
[Wed Feb 27 14:17:09 2019] ? detach_buf_split+0x145/0x160
[Wed Feb 27 14:17:09 2019] ? __switch_to_asm+0x40/0x70
[Wed Feb 27 14:17:09 2019] virtio_transport_rx_work+0xa0/0x106 [vmw_vsock_virtio_transport]
[Wed Feb 27 14:17:09 2019] NET: Registered protocol family 40
[Wed Feb 27 14:17:09 2019] process_one_work+0x167/0x410
[Wed Feb 27 14:17:09 2019] worker_thread+0x4d/0x460
[Wed Feb 27 14:17:09 2019] kthread+0x105/0x140
[Wed Feb 27 14:17:09 2019] ? rescuer_thread+0x360/0x360
[Wed Feb 27 14:17:09 2019] ? kthread_destroy_worker+0x50/0x50
[Wed Feb 27 14:17:09 2019] ret_from_fork+0x35/0x40
[Wed Feb 27 14:17:09 2019] Modules linked in: vmw_vsock_virtio_transport vmw_vsock_virtio_transport_common input_leds vsock serio_raw i2c_piix4 mac_hid qemu_fw_cfg autofs4 cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops virtio_net psmouse drm net_failover pata_acpi virtio_blk failover floppy
Fixes: 22b5c0b63f32 ("vsock/virtio: fix kernel panic after device hot-unplug")
Reported-by: Alexandru Herghelegiu <aherghelegiu@bitdefender.com>
Signed-off-by: Adalbert Lazăr <alazar@bitdefender.com>
Co-developed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/vmw_vsock/virtio_transport_common.c | 22 +++++++++++++++-------
1 file changed, 15 insertions(+), 7 deletions(-)
--- a/net/vmw_vsock/virtio_transport_common.c
+++ b/net/vmw_vsock/virtio_transport_common.c
@@ -662,6 +662,8 @@ static int virtio_transport_reset(struct
*/
static int virtio_transport_reset_no_sock(struct virtio_vsock_pkt *pkt)
{
+ const struct virtio_transport *t;
+ struct virtio_vsock_pkt *reply;
struct virtio_vsock_pkt_info info = {
.op = VIRTIO_VSOCK_OP_RST,
.type = le16_to_cpu(pkt->hdr.type),
@@ -672,15 +674,21 @@ static int virtio_transport_reset_no_soc
if (le16_to_cpu(pkt->hdr.op) == VIRTIO_VSOCK_OP_RST)
return 0;
- pkt = virtio_transport_alloc_pkt(&info, 0,
- le64_to_cpu(pkt->hdr.dst_cid),
- le32_to_cpu(pkt->hdr.dst_port),
- le64_to_cpu(pkt->hdr.src_cid),
- le32_to_cpu(pkt->hdr.src_port));
- if (!pkt)
+ reply = virtio_transport_alloc_pkt(&info, 0,
+ le64_to_cpu(pkt->hdr.dst_cid),
+ le32_to_cpu(pkt->hdr.dst_port),
+ le64_to_cpu(pkt->hdr.src_cid),
+ le32_to_cpu(pkt->hdr.src_port));
+ if (!reply)
return -ENOMEM;
- return virtio_transport_get_ops()->send_pkt(pkt);
+ t = virtio_transport_get_ops();
+ if (!t) {
+ virtio_transport_free_pkt(reply);
+ return -ENOTCONN;
+ }
+
+ return t->send_pkt(reply);
}
static void virtio_transport_wait_close(struct sock *sk, long timeout)
next prev parent reply other threads:[~2019-03-18 9:27 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-18 9:23 [PATCH 5.0 00/43] 5.0.3-stable review Greg Kroah-Hartman
2019-03-18 9:23 ` [PATCH 5.0 01/43] connector: fix unsafe usage of ->real_parent Greg Kroah-Hartman
2019-03-18 9:23 ` [PATCH 5.0 02/43] fou, fou6: avoid uninit-value in gue_err() and gue6_err() Greg Kroah-Hartman
2019-03-18 9:23 ` [PATCH 5.0 03/43] gro_cells: make sure device is up in gro_cells_receive() Greg Kroah-Hartman
2019-03-18 9:23 ` [PATCH 5.0 04/43] ipv4/route: fail early when inet dev is missing Greg Kroah-Hartman
2019-03-18 9:23 ` [PATCH 5.0 05/43] l2tp: fix infoleak in l2tp_ip6_recvmsg() Greg Kroah-Hartman
2019-03-18 9:23 ` [PATCH 5.0 06/43] lan743x: Fix RX Kernel Panic Greg Kroah-Hartman
2019-03-18 9:23 ` [PATCH 5.0 07/43] lan743x: Fix TX Stall Issue Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 08/43] net: hns3: add dma_rmb() for rx description Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 09/43] net: hsr: fix memory leak in hsr_dev_finalize() Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 10/43] net/hsr: fix possible crash in add_timer() Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 11/43] net: sit: fix UBSAN Undefined behaviour in check_6rd Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 12/43] net/x25: fix use-after-free in x25_device_event() Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 13/43] net/x25: reset state in x25_connect() Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 14/43] pptp: dst_release sk_dst_cache in pptp_sock_destruct Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 15/43] ravb: Decrease TxFIFO depth of Q3 and Q2 to one Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 16/43] route: set the deleted fnhe fnhe_daddr to 0 in ip_del_fnhe to fix a race Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 17/43] rxrpc: Fix client call queueing, waiting for channel Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 18/43] sctp: remove sched init from sctp_stream_init Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 19/43] tcp: do not report TCP_CM_INQ of 0 for closed connections Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 20/43] tcp: Dont access TCP_SKB_CB before initializing it Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 21/43] tcp: handle inet_csk_reqsk_queue_add() failures Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 22/43] vxlan: Fix GRO cells race condition between receive and link delete Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 23/43] vxlan: test dev->flags & IFF_UP before calling gro_cells_receive() Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 24/43] net/mlx4_core: Fix reset flow when in command polling mode Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 25/43] net/mlx4_core: Fix locking in SRIOV mode when switching between events and polling Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 26/43] net/mlx4_core: Fix qp mtt size calculation Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 27/43] net: dsa: mv88e6xxx: Set correct interface mode for CPU/DSA ports Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 28/43] net: hns3: fix to stop multiple HNS reset due to the AER changes Greg Kroah-Hartman
2019-03-18 9:24 ` Greg Kroah-Hartman [this message]
2019-03-18 9:24 ` [PATCH 5.0 30/43] net: sched: flower: insert new filter to idr after setting its mask Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 31/43] f2fs: wait on atomic writes to count F2FS_CP_WB_DATA Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 32/43] perf/x86: Fixup typo in stub functions Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 33/43] ALSA: bebob: use more identical mod_alias for Saffire Pro 10 I/O against Liquid Saffire 56 Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 34/43] ALSA: firewire-motu: fix construction of PCM frame for capture direction Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 35/43] ALSA: hda: Extend i915 component bind timeout Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 36/43] ALSA: hda - add more quirks for HP Z2 G4 and HP Z240 Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 37/43] ALSA: hda/realtek: Enable audio jacks of ASUS UX362FA with ALC294 Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 38/43] ALSA: hda/realtek - Reduce click noise on Dell Precision 5820 headphone Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 39/43] ALSA: hda/realtek: Enable headset MIC of Acer TravelMate X514-51T with ALC255 Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 40/43] perf/x86/intel: Fix memory corruption Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 41/43] perf/x86/intel: Make dev_attr_allow_tsx_force_abort static Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 42/43] Its wrong to add len to sector_nr in raid10 reshape twice Greg Kroah-Hartman
2019-03-18 9:24 ` [PATCH 5.0 43/43] drm: Block fb changes for async plane updates Greg Kroah-Hartman
2019-03-19 2:26 ` [PATCH 5.0 00/43] 5.0.3-stable review Guenter Roeck
2019-03-19 12:19 ` Greg Kroah-Hartman
2019-03-19 2:54 ` Naresh Kamboju
2019-03-19 12:20 ` Greg Kroah-Hartman
2019-03-19 10:34 ` Jon Hunter
2019-03-19 10:34 ` Jon Hunter
2019-03-19 12:17 ` Greg Kroah-Hartman
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