net.agent (13700) used greatest stack depth: 8552 bytes left
cat (13727) used greatest stack depth: 8528 bytes left
Kernel panic - not syncing: corrupted stack end detected inside scheduler
CPU: 1 PID: 22884 Comm: kworker/u4:5 Not tainted 4.20.0-rc7-next-20181224 #188
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/0x632 kernel/panic.c:214
 schedule_debug kernel/sched/core.c:3285 [inline]
 __schedule+0x1ecf/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+0x8a6/0x27f0 mm/page_vma_mapped.c:172
Code: fd ff ff 4d 89 fd 49 c1 ed 24 41 81 e5 f8 0f 00 00 4c 03 68 50 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 <0f> 85 60 19 00 00 4d 8b 6d 00 31 ff 45 89 ee 41 83 e6 01 44 89 f6
RSP: 0018:ffff88817e479160 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: ffff88817e479580 RCX: ffffffff81ba4085
RDX: 1ffff11030659e00 RSI: ffffffff81ba40c2 RDI: ffff8881d2e08d90
RBP: ffff88817e479448 R08: ffff88817f0e0340 R09: fffff94000da207e
R10: fffff94000da207e R11: ffffea0006d103f3 R12: 0000000000000000
R13: ffff8881832cf000 R14: ffff8881d2e08d40 R15: 000000000047c000
 try_to_unmap_one+0x72d/0x3b20 mm/rmap.c:1392
 rmap_walk_file+0x80a/0x1190 mm/rmap.c:1890
 rmap_walk+0x22c/0x350 mm/rmap.c:1908
 try_to_unmap+0x1f3/0xa40 mm/rmap.c:1727
 shrink_page_list+0x4fe8/0xc350 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+0x3df/0x12a0 mm/vmscan.c:3068
 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3284
 __perform_reclaim mm/page_alloc.c:4037 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:4059 [inline]
 __alloc_pages_slowpath+0xa5a/0x2d90 mm/page_alloc.c:4452
 __alloc_pages_nodemask+0xa89/0xde0 mm/page_alloc.c:4666
 __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+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+0x1413/0x4190 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..