Kernel panic - not syncing: corrupted stack end detected inside scheduler CPU: 0 PID: 3065 Comm: kworker/u4:4 Not tainted 4.20.0-rc6-next-20181214+ #171 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/0x632 kernel/panic.c:214 schedule_debug kernel/sched/core.c:3285 [inline] __schedule+0x21d7/0x21e0 kernel/sched/core.c:3394 schedule+0xef/0x370 kernel/sched/core.c:3516 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x371/0x710 kernel/locking/rwsem-xadd.c:297 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x9b/0x120 kernel/locking/rwsem.c:26 i_mmap_lock_read include/linux/fs.h:521 [inline] rmap_walk_file+0xa7e/0x1190 mm/rmap.c:1880 rmap_walk+0x22c/0x350 mm/rmap.c:1908 try_to_unmap+0x1f3/0xa40 mm/rmap.c:1727 shrink_page_list+0x52e5/0xcb50 mm/vmscan.c:1347 shrink_inactive_list+0x77b/0x1c60 mm/vmscan.c:1970 shrink_list mm/vmscan.c:2292 [inline] shrink_node_memcg+0x7a8/0x19a0 mm/vmscan.c:2557 shrink_node+0x3e1/0x17f0 mm/vmscan.c:2772 shrink_zones mm/vmscan.c:3006 [inline] do_try_to_free_pages+0x3e7/0x12a0 mm/vmscan.c:3068 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3284 __perform_reclaim mm/page_alloc.c:3999 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:4021 [inline] __alloc_pages_slowpath+0xa5a/0x2dc0 mm/page_alloc.c:4414 __alloc_pages_nodemask+0xaed/0xec0 mm/page_alloc.c:4628 __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+0xa5/0x8c0 mm/slab.c:2664 fallback_alloc+0x204/0x2e0 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+0x1316/0x1c4d fs/ext4/page-io.c:505 mpage_submit_page+0x15e/0x270 fs/ext4/inode.c:2236 mpage_process_page_bufs+0x50a/0x600 fs/ext4/inode.c:2347 mpage_prepare_extent_to_map+0xea5/0x19c0 fs/ext4/inode.c:2709 ext4_writepages+0x1413/0x41b0 fs/ext4/inode.c:2836 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..