VMExit: intr_info=00000000 errcode=00000000 ilen=00000003
        reason=80000021 qualification=0000000000000002
IDTVectoring: info=00000000 errcode=00000000
TSC Offset = 0xfffffed7d9a80202
EPT pointer = 0x000000018287501e
Kernel panic - not syncing: corrupted stack end detected inside scheduler
CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 4.20.0-rc6+ #151
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 panic+0x2ad/0x55c kernel/panic.c:188
 schedule_debug kernel/sched/core.c:3285 [inline]
 __schedule+0x21c6/0x21d0 kernel/sched/core.c:3394
 preempt_schedule_notrace+0x70/0x140 kernel/sched/core.c:3670
 ___preempt_schedule_notrace+0x16/0x31
 rcu_is_watching+0x23/0x30 kernel/rcu/tree.c:907
 rcu_read_lock+0x43/0x70 include/linux/rcupdate.h:608
 mem_cgroup_iter+0x208/0x1160 mm/memcontrol.c:934
 shrink_node+0x340/0x16b0 mm/vmscan.c:2723
 shrink_zones mm/vmscan.c:2987 [inline]
 do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3049
 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264
 __perform_reclaim mm/page_alloc.c:3773 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:3795 [inline]
 __alloc_pages_slowpath+0xa48/0x2de0 mm/page_alloc.c:4185
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2106
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924
 pagecache_get_page+0x396/0xf00 mm/filemap.c:1554
 find_or_create_page include/linux/pagemap.h:322 [inline]
 ext4_mb_load_buddy_gfp+0xa80/0x1e70 fs/ext4/mballoc.c:1194
 ext4_mb_load_buddy fs/ext4/mballoc.c:1241 [inline]
 ext4_mb_regular_allocator+0x634/0x1590 fs/ext4/mballoc.c:2190
 ext4_mb_new_blocks+0x1de3/0x4840 fs/ext4/mballoc.c:4538
 ext4_new_meta_blocks+0x30a/0x520 fs/ext4/balloc.c:657
 ext4_ext_grow_indepth fs/ext4/extents.c:1282 [inline]
 ext4_ext_create_new_leaf fs/ext4/extents.c:1384 [inline]
 ext4_ext_insert_extent+0xb0f/0x45a0 fs/ext4/extents.c:2068
 ext4_ext_map_blocks+0x2b1c/0x48f0 fs/ext4/extents.c:4430
 ext4_map_blocks+0x8f7/0x1b50 fs/ext4/inode.c:636
 mpage_map_one_extent fs/ext4/inode.c:2480 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2533 [inline]
 ext4_writepages+0x253a/0x41a0 fs/ext4/inode.c:2884
 do_writepages+0x9a/0x1a0 mm/page-writeback.c:2328
 __writeback_single_inode+0x20a/0x1660 fs/fs-writeback.c:1316
 writeback_sb_inodes+0x71f/0x1210 fs/fs-writeback.c:1580
 __writeback_inodes_wb+0x1b9/0x340 fs/fs-writeback.c:1649
 wb_writeback+0xa73/0xfc0 fs/fs-writeback.c:1758
 wb_check_start_all fs/fs-writeback.c:1882 [inline]
 wb_do_writeback fs/fs-writeback.c:1908 [inline]
 wb_workfn+0xee9/0x1790 fs/fs-writeback.c:1942
 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153
 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..