BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
PGD 8000000136b64067 P4D 8000000136b64067 PUD 19b387067 PMD 0
Oops: 0000 [#1] SMP PTI
Dumping ftrace buffer:
(ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 8840 Comm: vhost-8839 Not tainted 4.17.0+ #22
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_add_valid+0xad/0x450 lib/list_debug.c:26
RSP: 0018:ffff880137c8f928 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000100000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff880137c8f990 R08: ffffffff7fffff00 R09: ffff8801a2521100
R10: 0000000000000000 R11: ffffffff87a30930 R12: ffff880100000210
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88014cdf2620
FS: 0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000137b3e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__list_add include/linux/list.h:60 [inline]
list_add_tail include/linux/list.h:93 [inline]
find_css_set+0x2958/0x3340 kernel/cgroup/cgroup.c:1171
cgroup_migrate_prepare_dst+0x141/0x1b90 kernel/cgroup/cgroup.c:2503
cgroup_attach_task+0x42d/0xee0 kernel/cgroup/cgroup.c:2616
cgroup_attach_task_all+0x1c1/0x320 kernel/cgroup/cgroup-v1.c:69
vhost_attach_cgroups_work+0x79/0xf0 drivers/vhost/vhost.c:466
vhost_worker+0x30c/0x570 drivers/vhost/vhost.c:360
kthread+0x4db/0x6c0 kernel/kthread.c:241
ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:415
Code: df 48 89 5d b0 74 12 4c 89 e9 48 31 d1 48 f7 d0 48 21 c8 0f 84 0c 01 00 00 49 39 d5 0f 85 28 01 00 00 48 85 ff 0f 85 d5 01 00 00 <4c> 8b 2a 48 89 d7 e8 58 eb bd fd 4c 8b 30 8b 1a 4c 89 f0 48 0b
RIP: __list_add_valid+0xad/0x450 lib/list_debug.c:26 RSP: ffff880137c8f928
CR2: 0000000000000000
---[ end trace adb1bd2d85cb9d07 ]---