0 pages HighMem/MovableOnly
342859 pages reserved
0 pages cma reserved
Out of memory: Kill process 6235 (syz-executor217) score 0 or sacrifice child
Killed process 6235 (syz-executor217) total-vm:17720kB, anon-rss:2104kB, file-rss:0kB, shmem-rss:0kB
Kernel panic - not syncing: corrupted stack end detected inside scheduler
CPU: 1 PID: 29 Comm: kworker/u4:2 Not tainted 4.20.0-rc7+ #162
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
 preempt_schedule_irq+0x87/0x110 kernel/sched/core.c:3699
 retint_kernel+0x1b/0x2d
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:mod_delayed_work_on+0x189/0x260 kernel/workqueue.c:1597
Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 de 00 00 00 48 83 3d 57 74 00 08 00 0f 84 9c 00 00 00 e8 bc 2a 2d 00 4c 89 ef 57 9d <0f> 1f 44 00 00 e8 ad 2a 2d 00 31 ff 89 de e8 b4 2b 2d 00 85 db 48
RSP: 0018:ffff8881d95512b8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8881d9542080 RBX: 0000000000000000 RCX: 1ffff1103b2a8538
RDX: 0000000000000000 RSI: ffffffff81518d24 RDI: 0000000000000293
RBP: ffff8881d9551358 R08: ffff8881d95429c0 R09: 0000000000000007
R10: 0000000000000000 R11: ffff8881d9542080 R12: 1ffff1103b2aa25a
R13: 0000000000000293 R14: 0000000000000200 R15: ffff8881d9551330
 kblockd_mod_delayed_work_on+0x2a/0x40 block/blk-core.c:3547
 __blk_mq_delay_run_hw_queue+0x32a/0x5b0 block/blk-mq.c:1390
 blk_mq_run_hw_queue+0x1cd/0x390 block/blk-mq.c:1419
 blk_mq_sched_insert_requests+0x31e/0x460 block/blk-mq-sched.c:422
 blk_mq_flush_plug_list+0xb38/0x1230 block/blk-mq.c:1669
 blk_flush_plug_list+0x1c7/0x990 block/blk-core.c:3668
 blk_schedule_flush_plug include/linux/blkdev.h:1353 [inline]
 sched_submit_work kernel/sched/core.c:3506 [inline]
 schedule+0x235/0x460 kernel/sched/core.c:3513
 __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
 try_to_unmap+0x1f3/0xa40 mm/rmap.c:1716
 shrink_page_list+0x72b8/0xc620 mm/vmscan.c:1334
 shrink_inactive_list+0x77b/0x1c60 mm/vmscan.c:1963
 shrink_list mm/vmscan.c:2275 [inline]
 shrink_node_memcg+0x78b/0x18f0 mm/vmscan.c:2540
 shrink_node+0x3bc/0x16b0 mm/vmscan.c:2755
 shrink_zones mm/vmscan.c:2987 [inline]
 do_try_to_free_pages+0x3df/0x1290 mm/vmscan.c:3049
 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264
 __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
 bvec_alloc+0x12a/0x2d0 block/bio.c:218
 bio_alloc_bioset+0x47a/0x700 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+0x1304/0x1bd1 fs/ext4/page-io.c:506
 mpage_submit_page+0x15e/0x270 fs/ext4/inode.c:2237
 mpage_map_and_submit_buffers+0x55e/0xa40 fs/ext4/inode.c:2434
 mpage_map_and_submit_extent fs/ext4/inode.c:2572 [inline]
 ext4_writepages+0x2720/0x4180 fs/ext4/inode.c:2884
 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..