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93f0750dcd
linux/drivers/media
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Mauro Carvalho Chehab 93f0750dcd Revert "[media] videobuf2-v4l2: Verify planes array in buffer dequeueing" 
This patch causes a Kernel panic when called on a DVB driver.

This was also reported by David R <david@unsolicited.net>:

May  7 14:47:35 server kernel: [  501.247123] BUG: unable to handle kernel NULL pointer dereference at 0000000000000004
May  7 14:47:35 server kernel: [  501.247239] IP: [<ffffffffa0222c71>] __verify_planes_array.isra.3+0x1/0x80 [videobuf2_v4l2]
May  7 14:47:35 server kernel: [  501.247354] PGD cae6f067 PUD ca99c067 PMD 0
May  7 14:47:35 server kernel: [  501.247426] Oops: 0000 [#1] SMP
May  7 14:47:35 server kernel: [  501.247482] Modules linked in: xfs tun xt_connmark xt_TCPMSS xt_tcpmss xt_owner xt_REDIRECT nf_nat_redirect xt_nat ipt_MASQUERADE nf_nat_masquerade_ipv4 ts_kmp ts_bm xt_string ipt_REJECT nf_reject_ipv4 xt_recent xt_conntrack xt_multiport xt_pkttype xt_tcpudp xt_mark nf_log_ipv4 nf_log_common xt_LOG xt_limit iptable_mangle iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter ip_tables ip6table_filter ip6_tables x_tables pppoe pppox dm_crypt ts2020 regmap_i2c ds3000 cx88_dvb dvb_pll cx88_vp3054_i2c mt352 videobuf2_dvb cx8800 cx8802 cx88xx pl2303 tveeprom videobuf2_dma_sg ppdev videobuf2_memops videobuf2_v4l2 videobuf2_core dvb_usb_digitv snd_hda_codec_via snd_hda_codec_hdmi snd_hda_codec_generic radeon dvb_usb snd_hda_intel amd64_edac_mod serio_raw snd_hda_codec edac_core fbcon k10temp bitblit softcursor snd_hda_core font snd_pcm_oss i2c_piix4 snd_mixer_oss tileblit drm_kms_helper syscopyarea snd_pcm snd_seq_dummy sysfillrect snd_seq_oss sysimgblt fb_sys_fops ttm snd_seq_midi r8169 snd_rawmidi drm snd_seq_midi_event e1000e snd_seq snd_seq_device snd_timer snd ptp pps_core i2c_algo_bit soundcore parport_pc ohci_pci shpchp tpm_tis tpm nfsd auth_rpcgss oid_registry hwmon_vid exportfs nfs_acl mii nfs bonding lockd grace lp sunrpc parport
May  7 14:47:35 server kernel: [  501.249564] CPU: 1 PID: 6889 Comm: vb2-cx88[0] Not tainted 4.5.3 #3
May  7 14:47:35 server kernel: [  501.249644] Hardware name: System manufacturer System Product Name/M4A785TD-V EVO, BIOS 0211    07/08/2009
May  7 14:47:35 server kernel: [  501.249767] task: ffff8800aebf3600 ti: ffff8801e07a0000 task.ti: ffff8801e07a0000
May  7 14:47:35 server kernel: [  501.249861] RIP: 0010:[<ffffffffa0222c71>]  [<ffffffffa0222c71>] __verify_planes_array.isra.3+0x1/0x80 [videobuf2_v4l2]
May  7 14:47:35 server kernel: [  501.250002] RSP: 0018:ffff8801e07a3de8  EFLAGS: 00010086
May  7 14:47:35 server kernel: [  501.250071] RAX: 0000000000000283 RBX: ffff880210dc5000 RCX: 0000000000000283
May  7 14:47:35 server kernel: [  501.250161] RDX: ffffffffa0222cf0 RSI: 0000000000000000 RDI: ffff880210dc5014
May  7 14:47:35 server kernel: [  501.250251] RBP: ffff8801e07a3df8 R08: ffff8801e07a0000 R09: 0000000000000000
May  7 14:47:35 server kernel: [  501.250348] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8800cda2a9d8
May  7 14:47:35 server kernel: [  501.250438] R13: ffff880210dc51b8 R14: 0000000000000000 R15: ffff8800cda2a828
May  7 14:47:35 server kernel: [  501.250528] FS:  00007f5b77fff700(0000) GS:ffff88021fc40000(0000) knlGS:00000000adaffb40
May  7 14:47:35 server kernel: [  501.250631] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
May  7 14:47:35 server kernel: [  501.250704] CR2: 0000000000000004 CR3: 00000000ca19d000 CR4: 00000000000006e0
May  7 14:47:35 server kernel: [  501.250794] Stack:
May  7 14:47:35 server kernel: [  501.250822]  ffff8801e07a3df8 ffffffffa0222cfd ffff8801e07a3e70 ffffffffa0236beb
May  7 14:47:35 server kernel: [  501.250937]  0000000000000283 ffff8801e07a3e94 0000000000000000 0000000000000000
May  7 14:47:35 server kernel: [  501.251051]  ffff8800aebf3600 ffffffff8108d8e0 ffff8801e07a3e38 ffff8801e07a3e38
May  7 14:47:35 server kernel: [  501.251165] Call Trace:
May  7 14:47:35 server kernel: [  501.251200]  [<ffffffffa0222cfd>] ? __verify_planes_array_core+0xd/0x10 [videobuf2_v4l2]
May  7 14:47:35 server kernel: [  501.251306]  [<ffffffffa0236beb>] vb2_core_dqbuf+0x2eb/0x4c0 [videobuf2_core]
May  7 14:47:35 server kernel: [  501.251398]  [<ffffffff8108d8e0>] ? prepare_to_wait_event+0x100/0x100
May  7 14:47:35 server kernel: [  501.251482]  [<ffffffffa023855b>] vb2_thread+0x1cb/0x220 [videobuf2_core]
May  7 14:47:35 server kernel: [  501.251569]  [<ffffffffa0238390>] ? vb2_core_qbuf+0x230/0x230 [videobuf2_core]
May  7 14:47:35 server kernel: [  501.251662]  [<ffffffffa0238390>] ? vb2_core_qbuf+0x230/0x230 [videobuf2_core]
May  7 14:47:35 server kernel: [  501.255982]  [<ffffffff8106f984>] kthread+0xc4/0xe0
May  7 14:47:35 server kernel: [  501.260292]  [<ffffffff8106f8c0>] ? kthread_park+0x50/0x50
May  7 14:47:35 server kernel: [  501.264615]  [<ffffffff81697a5f>] ret_from_fork+0x3f/0x70
May  7 14:47:35 server kernel: [  501.268962]  [<ffffffff8106f8c0>] ? kthread_park+0x50/0x50
May  7 14:47:35 server kernel: [  501.273216] Code: 0d 01 74 16 48 8b 46 28 48 8b 56 30 48 89 87 d0 01 00 00 48 89 97 d8 01 00 00 5d c3 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 <8b> 46 04 48 89 e5 8d 50 f7 31 c0 83 fa 01 76 02 5d c3 48 83 7e
May  7 14:47:35 server kernel: [  501.282146] RIP  [<ffffffffa0222c71>] __verify_planes_array.isra.3+0x1/0x80 [videobuf2_v4l2]
May  7 14:47:35 server kernel: [  501.286391]  RSP <ffff8801e07a3de8>
May  7 14:47:35 server kernel: [  501.290619] CR2: 0000000000000004
May  7 14:47:35 server kernel: [  501.294786] ---[ end trace b2b354153ccad110 ]---

This reverts commit 2c1f6951a8.

Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Cc: stable@vger.kernel.org
Fixes: 2c1f6951a8 ("[media] videobuf2-v4l2: Verify planes array in buffer dequeueing")
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2016-05-11 17:38:47 -03:00
..
common [media] siano: firmware buffer is too small 2016-02-16 09:29:13 -02:00
dvb-core [media] dvb-core: fix return code checking for devices with CA 2016-03-03 14:33:33 -03:00
dvb-frontends [media] cx24120: make sure tuner is locked at get_frontend 2016-03-03 14:26:55 -03:00
firewire [media] dvb: modify core to implement interfaces/entities at MC new gen 2016-01-11 12:18:52 -02:00
i2c [media] adv7604: fix SPA register location for ADV7612 2016-03-03 07:32:20 -03:00
mmc [media] siano: register media controller earlier 2015-02-26 09:10:39 -03:00
pci Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 19:08:56 -07:00
platform [media] media: s3c-camif: fix deadlock on driver probe() 2016-05-02 10:39:58 -03:00
radio [media] tea575x: convert to library 2016-02-10 09:34:28 -02:00
rc [media] mceusb: use %*ph for small buffer dumps 2016-03-10 13:37:44 -03:00
tuners [media] xc4000: shut up a bogus smatch message 2016-02-23 07:14:02 -03:00
usb [media] usbvision: revert commit 588afcc1 2016-04-20 15:58:54 -03:00
v4l2-core Revert "[media] videobuf2-v4l2: Verify planes array in buffer dequeueing" 2016-05-11 17:38:47 -03:00
Kconfig [media] Kconfig: Re-enable Media controller support for DVB 2016-01-11 12:18:40 -02:00
Makefile [media] bq/c-qcam, w9966, pms: move to staging in preparation for removal 2014-12-16 23:21:44 -02:00
media-device.c [media] media-device: fix builds when USB or PCI is compiled as module 2016-05-05 08:01:34 -03:00
media-devnode.c [media] media: Fix media_open() to clear filp->private_data in error leg 2016-02-01 13:21:33 -02:00
media-entity.c [media] media: add prefixes to interface types 2016-03-05 09:03:16 -03:00