raw: 0000000000000000 000000000000000a 00000000ffffff7f 0000000000000000
page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0)
------------[ cut here ]------------
kernel BUG at include/linux/mm.h:699!
invalid opcode: 0000 [#2] PREEMPT SMP KASAN
CPU: 0 PID: 5408 Comm: kworker/0:46 Tainted: G      D           5.7.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events free_work
RIP: 0010:put_page_testzero include/linux/mm.h:699 [inline]
RIP: 0010:put_page_testzero include/linux/mm.h:697 [inline]
RIP: 0010:__free_pages+0x93/0xa0 mm/page_alloc.c:4878
Code: e9 12 fe ff ff 5d 41 5c 41 5d c3 44 89 ee 48 89 ef 5d 41 5c 41 5d e9 9c af ff ff 48 c7 c6 40 df 34 88 48 89 ef e8 7d 30 f7 ff <0f> 0b 4c 89 e7 e8 43 f6 08 00 eb a3 90 41 57 89 f1 41 56 41 be 01
RSP: 0018:ffffc90008017c78 EFLAGS: 00010293
RAX: ffff8881e66ac3c0 RBX: 0000000000000007 RCX: ffffffff819f4e08
RDX: 0000000000000000 RSI: ffffffff81a80dd3 RDI: ffffea0007000038
RBP: ffffea0007000000 R08: ffff8881e66ac3c0 R09: ffffed1015cc66a9
R10: ffff8880ae633547 R11: ffffed1015cc66a8 R12: ffffea0007000034
R13: 0000000000000000 R14: ffffea0007000000 R15: ffff8880a7fa6f80
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000a000 CR3: 0000000203f3f000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __vunmap+0x614/0x960 mm/vmalloc.c:2316
 free_work+0x58/0x70 mm/vmalloc.c:67
 process_one_work+0x965/0x16a0 kernel/workqueue.c:2268
 worker_thread+0x96/0xe20 kernel/workqueue.c:2414
 kthread+0x388/0x470 kernel/kthread.c:268
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351
Modules linked in: