syz-executor619 (16560) used greatest stack depth: 14200 bytes left
syz-executor619 (16556) used greatest stack depth: 13576 bytes left
syz-executor619 (16557) used greatest stack depth: 6792 bytes left
Kernel panic - not syncing: corrupted stack end detected inside scheduler
CPU: 1 PID: 7 Comm: kworker/u4:0 Not tainted 4.20.0+ #389
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/0x55c kernel/panic.c:188
 schedule_debug kernel/sched/core.c:3285 [inline]
 __schedule+0x1ec6/0x1ed0 kernel/sched/core.c:3394
 schedule+0xfe/0x460 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:511 [inline]
 rmap_walk_file+0xa7e/0x1190 mm/rmap.c:1869
 rmap_walk+0x22c/0x350 mm/rmap.c:1897
 page_referenced+0x7d1/0xaa0 mm/rmap.c:874
 page_check_references mm/vmscan.c:1025 [inline]
 shrink_page_list+0x4a05/0xc620 mm/vmscan.c:1265
 shrink_inactive_list+0x77b/0x1c60 mm/vmscan.c:1964
 shrink_list mm/vmscan.c:2276 [inline]
 shrink_node_memcg+0x78b/0x18f0 mm/vmscan.c:2541
 shrink_node+0x3bc/0x16b0 mm/vmscan.c:2756
 shrink_zones mm/vmscan.c:2988 [inline]
 do_try_to_free_pages+0x3df/0x1290 mm/vmscan.c:3050
 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3265
 __perform_reclaim mm/page_alloc.c:3773 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:3795 [inline]
 __alloc_pages_slowpath+0xa48/0x2df0 mm/page_alloc.c:4185
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:473 [inline]
 __alloc_pages_node include/linux/gfp.h:486 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0x91/0x8c0 mm/slab.c:2677
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 __do_cache_alloc mm/slab.c:3356 [inline]
 slab_alloc mm/slab.c:3384 [inline]
 kmem_cache_alloc+0x1f8/0x730 mm/slab.c:3552
 mempool_alloc_slab+0x44/0x60 mm/mempool.c:505
 mempool_alloc+0x193/0x4a0 mm/mempool.c:385
 bio_alloc_bioset+0x3a8/0x700 block/bio.c:489
 bio_alloc include/linux/bio.h:393 [inline]
 submit_bh_wbc+0x14b/0x790 fs/buffer.c:3061
 __block_write_full_page+0x931/0x1490 fs/buffer.c:1765
 block_write_full_page+0x221/0x270 fs/buffer.c:2955
 blkdev_writepage+0x24/0x30 fs/block_dev.c:567
 __writepage+0x69/0xe0 mm/page-writeback.c:2289
 write_cache_pages+0xc91/0x1e20 mm/page-writeback.c:2230
 generic_writepages+0xda/0x150 mm/page-writeback.c:2313
 blkdev_writepages+0x1d/0x30 fs/block_dev.c:1957
 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..