Kernel panic - not syncing: corrupted stack end detected inside scheduler
CPU: 0 PID: 9391 Comm: kworker/u4:6 Not tainted 4.20.0+ #396
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_irq+0x87/0x110 kernel/sched/core.c:3699
 retint_kernel+0x1b/0x2d
RIP: 0010:page_vma_mapped_walk+0x94e/0x27f0 mm/page_vma_mapped.c:175
Code: ff ff 49 bd 00 f0 ff ff ff ff 0f 00 4c 21 e8 49 01 d4 49 01 c4 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 <0f> 85 97 1b 00 00 4d 8b 2c 24 31 ff 49 bc ff ff ff 3f 00 00 f0 ff
RSP: 0000:ffff888058e3acc0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: ffff888058e3b020 RCX: ffffffff81b9d7e1
RDX: 1ffff110129b00e0 RSI: ffffffff81b9d832 RDI: 0000000094d80067
RBP: ffff888058e3afa8 R08: ffff88809ba8c640 R09: ffffed100b47e437
R10: ffffed100b47e437 R11: ffff88805a3f21bb R12: ffff888094d80700
R13: 000ffffffffff000 R14: 0000000000000001 R15: 00000000000fe704
 page_referenced_one+0x2cb/0x840 mm/rmap.c:765
 rmap_walk_file+0x80a/0x1190 mm/rmap.c:1889
 rmap_walk+0x22c/0x350 mm/rmap.c:1907
 page_referenced+0x864/0xaa0 mm/rmap.c:875
 shrink_active_list+0x904/0x1f00 mm/vmscan.c:2137
 shrink_list mm/vmscan.c:2269 [inline]
 shrink_node_memcg+0x820/0x19a0 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_current+0x10c/0x210 mm/mempolicy.c:2106
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5b0 mm/filemap.c:924
 pagecache_get_page+0x396/0xf00 mm/filemap.c:1615
 find_or_create_page include/linux/pagemap.h:322 [inline]
 grow_dev_page fs/buffer.c:947 [inline]
 grow_buffers fs/buffer.c:1016 [inline]
 __getblk_slow fs/buffer.c:1043 [inline]
 __getblk_gfp+0x3aa/0xd50 fs/buffer.c:1320
 sb_getblk include/linux/buffer_head.h:325 [inline]
 ext4_read_block_bitmap_nowait+0x314/0x1f50 fs/ext4/balloc.c:427
 ext4_read_block_bitmap+0x1f/0x90 fs/ext4/balloc.c:527
 ext4_mb_mark_diskspace_used+0x19e/0x10d0 fs/ext4/mballoc.c:2938
 ext4_mb_new_blocks+0xea5/0x4840 fs/ext4/mballoc.c:4555
 ext4_ext_map_blocks+0x2eef/0x6180 fs/ext4/extents.c:4404
 ext4_map_blocks+0x8f7/0x1b60 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+0x2564/0x4170 fs/ext4/inode.c:2884
 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_background_flush fs/fs-writeback.c:1826 [inline]
 wb_do_writeback fs/fs-writeback.c:1914 [inline]
 wb_workfn+0xd65/0x1790 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..