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
2c1f6951a8a82e6de0d82b1158b5e493fc6c54ab.
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Cc: stable@vger.kernel.org
Fixes:
2c1f6951a8a8 ("[media] videobuf2-v4l2: Verify planes array in buffer dequeueing")
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>