IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
BUG: unable to handle kernel NULL pointer dereference at 000000000000002c
IP: [<ffffffff81e838f0>] atomic_dec_and_test arch/x86/include/asm/atomic.h:118 [inline]
IP: [<ffffffff81e838f0>] vb2_vmalloc_put+0x0/0x40 drivers/media/v4l2-core/videobuf2-vmalloc.c:68
PGD 73078067 PUD 7595c067 PMD 0 
Oops: 0002 [#1] PREEMPT SMP 
Modules linked in:
CPU: 1 PID: 6694 Comm: syz-executor3 Not tainted 4.1.0 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
task: ffff880075aae7d0 ti: ffff880072b80000 task.ti: ffff880072b80000
RIP: 0010:[<ffffffff81e838f0>]  [<ffffffff81e838f0>] atomic_dec_and_test arch/x86/include/asm/atomic.h:118 [inline]
RIP: 0010:[<ffffffff81e838f0>]  [<ffffffff81e838f0>] vb2_vmalloc_put+0x0/0x40 drivers/media/v4l2-core/videobuf2-vmalloc.c:68
RSP: 0018:ffff880072b83d50  EFLAGS: 00010286
RAX: ffffffff81e838f0 RBX: 0000000000000000 RCX: 0000000000000006
RDX: 0000000000000000 RSI: ffff880075aaf060 RDI: 0000000000000000
RBP: ffff880072b83d78 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff880072bb4c00 R14: 0000000000000009 R15: ffff88007a47a010
FS:  0000000001589940(0063) GS:ffff88007fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000002c CR3: 00000000731d1000 CR4: 00000000003407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff81e7da15 ffff880072b83d98 ffff880072bb4c00 ffff88007b59ddf0
 ffff88007b59dda8 ffff880072b83dc8 ffffffff81e7f8b8 ffff88007b59dda8
 000000207a47a010 ffff880072b83dc8 ffff88007b59dda8 ffff88007b59ddf0
Call Trace:
 [<ffffffff81e7f8b8>] __vb2_free_mem drivers/media/v4l2-core/videobuf2-core.c:425 [inline]
 [<ffffffff81e7f8b8>] __vb2_queue_free+0x228/0x280 drivers/media/v4l2-core/videobuf2-core.c:470
 [<ffffffff81e81f73>] vb2_queue_release+0x33/0x40 drivers/media/v4l2-core/videobuf2-core.c:2738
 [<ffffffff81e8200f>] _vb2_fop_release+0x8f/0xa0 drivers/media/v4l2-core/videobuf2-core.c:3416
 [<ffffffff81e82049>] vb2_fop_release+0x29/0x50 drivers/media/v4l2-core/videobuf2-core.c:3430
 [<ffffffff81e84362>] vivid_fop_release+0x92/0x230 drivers/media/platform/vivid/vivid-core.c:482
 [<ffffffff81e699a0>] v4l2_release+0x30/0x80 drivers/media/v4l2-core/v4l2-dev.c:443
 [<ffffffff812ffedd>] __fput+0xed/0x250 fs/file_table.c:208
 [<ffffffff81300089>] ____fput+0x9/0x10 fs/file_table.c:244
 [<ffffffff811938e4>] task_work_run+0xc4/0xf0 kernel/task_work.c:123
 [<ffffffff8107d238>] tracehook_notify_resume include/linux/tracehook.h:190 [inline]
 [<ffffffff8107d238>] do_notify_resume+0x68/0x70 arch/x86/kernel/signal.c:739
 [<ffffffff8260c8eb>] int_signal+0x12/0x17
Code: 48 c7 c7 58 a9 f3 82 e8 af a2 2e ff 48 83 c4 38 31 c0 5b 5d c3 66 0f 1f 44 00 00 31 c0 eb d2 66 90 66 2e 0f 1f 84 00 00 00 00 00 <f0> ff 4f 2c 74 0a c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 53 
RIP  [<ffffffff81e838f0>] vb2_vmalloc_put+0x0/0x40 drivers/media/v4l2-core/videobuf2-vmalloc.c:383
 RSP <ffff880072b83d50>
CR2: 000000000000002c
---[ end trace 345e83a61c616434 ]---