Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
Kernel panic - not syncing: corrupted stack end detected inside scheduler
CPU: 1 PID: 31381 Comm: kworker/u4:2 Not tainted 4.20.0-rc6+ #151
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
lowmem_reserve[]: 0 2818 6321 6321
Workqueue: writeback wb_workfn (flush-8:0)
Node 0 DMA32 free:43892kB min:30052kB low:37564kB high:45076kB active_anon:2807688kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888780kB mlocked:0kB kernel_stack:1312kB pagetables:10968kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
Call Trace:
lowmem_reserve[]: 0 0 3503 3503
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
Node 0 Normal free:37036kB min:37364kB low:46704kB high:56044kB active_anon:2610320kB inactive_anon:2152kB active_file:60kB inactive_file:316kB unevictable:0kB writepending:4kB present:4718592kB managed:3587816kB mlocked:0kB kernel_stack:21568kB pagetables:29008kB bounce:0kB free_pcp:256kB local_pcp:184kB free_cma:0kB
 panic+0x2ad/0x55c kernel/panic.c:188
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB
Node 0 DMA32: 61*4kB (UME) 114*8kB (UME) 97*16kB (UE) 345*32kB (UME) 177*64kB (UME) 87*128kB (UME) 30*256kB (UM) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 43892kB
 schedule_debug kernel/sched/core.c:3285 [inline]
 __schedule+0x21c6/0x21d0 kernel/sched/core.c:3394
Node 0 Normal: 575*4kB (UMEH) 3147*8kB (UMEH) 491*16kB (UME) 65*32kB (UME) 1*64kB (M) 1*128kB (M) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 37604kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
845 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
 preempt_schedule_irq+0xb9/0x140 kernel/sched/core.c:3699
 retint_kernel+0x1b/0x2d
RIP: 0010:map_pte mm/page_vma_mapped.c:20 [inline]
RIP: 0010:page_vma_mapped_walk+0x1160/0x27c0 mm/page_vma_mapped.c:213
342853 pages reserved
Code: 00 00 e8 d3 78 c8 ff 4c 89 e2 41 83 e6 02 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 3b 14 00 00 4d 8b 24 24 <31> ff 44 89 f6 e8 b6 79 c8 ff 4d 89 e7 49 83 e7 9f 45 85 f6 0f 84
RSP: 0000:ffff8881582b0e50 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: ffff8881582b11b0 RCX: ffffffff81b70b8f
0 pages cma reserved
RDX: 1ffff11016c7a611 RSI: ffffffff81b70b9d RDI: 0000000000000005
RBP: ffff8881582b1138 R08: ffff8881c57f0480 R09: 0000000000000008
R10: 0000000000002dec R11: ffff8881c57f0480 R12: 0000000000000000
R13: ffffffff89520218 R14: 0000000000000000 R15: 0000000000000000
Out of memory: Kill process 22049 (syz-executor1) score 1005 or sacrifice child
Killed process 22049 (syz-executor1) total-vm:70736kB, anon-rss:160kB, file-rss:32768kB, shmem-rss:252kB
oom_reaper: reaped process 22049 (syz-executor1), now anon-rss:0kB, file-rss:32768kB, shmem-rss:252kB
 page_referenced_one+0x2cb/0x840 mm/rmap.c:764
 rmap_walk_file+0x80a/0x1190 mm/rmap.c:1879
 rmap_walk+0x22c/0x350 mm/rmap.c:1897
 page_referenced+0x7d1/0xaa0 mm/rmap.c:874
 page_check_references mm/vmscan.c:1024 [inline]
 shrink_page_list+0x4aab/0xccd0 mm/vmscan.c:1264
 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+0x3e7/0x1290 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+0xa48/0x2de0 mm/page_alloc.c:4185
 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393
 alloc_pages_current+0x173/0x350 mm/mempolicy.c:2106
 alloc_pages include/linux/gfp.h:509 [inline]
 __page_cache_alloc+0x38c/0x5c0 mm/filemap.c:924
 pagecache_get_page+0x396/0xf00 mm/filemap.c:1554
 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+0x2724/0x48f0 fs/ext4/extents.c:4404
 ext4_map_blocks+0x8f7/0x1b50 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+0x253a/0x41a0 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..