Kernel panic - not syncing: corrupted stack end detected inside scheduler
CPU: 0 PID: 267 Comm: kworker/u4:4 Not tainted 4.20.0+ #176
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+0x1d3/0x2c6 lib/dump_stack.c:113
 panic+0x2ad/0x55f kernel/panic.c:189
 schedule_debug kernel/sched/core.c:3285 [inline]
 __schedule+0x1ec6/0x1ed0 kernel/sched/core.c:3394
 preempt_schedule_common+0x1f/0xe0 kernel/sched/core.c:3596
 preempt_schedule+0x4d/0x60 kernel/sched/core.c:3622
 ___preempt_schedule+0x16/0x18
 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock+0x3f/0x50 kernel/locking/spinlock.c:176
 spin_unlock include/linux/spinlock.h:369 [inline]
 page_vma_mapped_walk_done include/linux/rmap.h:220 [inline]
 not_found mm/page_vma_mapped.c:12 [inline]
 page_vma_mapped_walk+0x2ec/0x27f0 mm/page_vma_mapped.c:228
 try_to_unmap_one+0x6ee/0x3ad0 mm/rmap.c:1391
 rmap_walk_file+0x80a/0x1190 mm/rmap.c:1889
 rmap_walk+0x22c/0x350 mm/rmap.c:1907
 try_to_unmap+0x1f3/0xa40 mm/rmap.c:1726
 shrink_page_list+0x70ef/0xc2e0 mm/vmscan.c:1338
 shrink_inactive_list+0x77b/0x1c60 mm/vmscan.c:1961
 shrink_list mm/vmscan.c:2273 [inline]
 shrink_node_memcg+0x7a8/0x19a0 mm/vmscan.c:2538
 shrink_node+0x3e1/0x17f0 mm/vmscan.c:2753
 shrink_zones mm/vmscan.c:2987 [inline]
 do_try_to_free_pages+0x3df/0x12a0 mm/vmscan.c:3049
 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3265
 __perform_reclaim mm/page_alloc.c:3920 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:3942 [inline]
 __alloc_pages_slowpath+0xa5a/0x2db0 mm/page_alloc.c:4335
 __alloc_pages_nodemask+0xa89/0xde0 mm/page_alloc.c:4549
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1396 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2664
 fallback_alloc+0x203/0x2e0 mm/slab.c:3206
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3274
 __do_cache_alloc mm/slab.c:3343 [inline]
 slab_alloc mm/slab.c:3371 [inline]
 kmem_cache_alloc+0x1f6/0x730 mm/slab.c:3539
 mempool_alloc_slab+0x44/0x60 mm/mempool.c:505
 mempool_alloc+0x193/0x4a0 mm/mempool.c:385
 bvec_alloc+0x12a/0x2d0 block/bio.c:218
 bio_alloc_bioset+0x46e/0x6f0 block/bio.c:509
 bio_alloc include/linux/bio.h:393 [inline]
 io_submit_init_bio fs/ext4/page-io.c:374 [inline]
 io_submit_add_bh fs/ext4/page-io.c:399 [inline]
 ext4_bio_write_page+0x114f/0x1a37 fs/ext4/page-io.c:506
 mpage_submit_page+0x15e/0x270 fs/ext4/inode.c:2237
 mpage_process_page_bufs+0x50a/0x600 fs/ext4/inode.c:2348
 mpage_prepare_extent_to_map+0xea5/0x19c0 fs/ext4/inode.c:2710
 ext4_writepages+0x1405/0x4170 fs/ext4/inode.c:2837
 do_writepages+0x9a/0x1a0 mm/page-writeback.c:2335
 __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..