page:00000000dcd63a2e refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x770
flags: 0x7ffe0000000000()
raw: 007ffe0000000000 ffffea000001dc08 ffffea000001dc08 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: VM_BUG_ON_PAGE(((unsigned int) page_ref_count(page) + 127u <= 127u))
------------[ cut here ]------------
kernel BUG at include/linux/mm.h:1153!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 13921 Comm: syz-executor.5 Not tainted 5.9.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_page include/linux/mm.h:1153 [inline]
RIP: 0010:copy_one_pte mm/memory.c:805 [inline]
RIP: 0010:copy_pte_range mm/memory.c:854 [inline]
RIP: 0010:copy_pmd_range mm/memory.c:905 [inline]
RIP: 0010:copy_pud_range mm/memory.c:939 [inline]
RIP: 0010:copy_p4d_range mm/memory.c:961 [inline]
RIP: 0010:copy_page_range+0x1b65/0x2810 mm/memory.c:1023
Code: ff e8 ef eb ce ff 0f 0b e8 e8 eb ce ff 0f 0b e8 e1 eb ce ff 0f 0b e8 da eb ce ff 48 c7 c6 20 1c 55 88 4c 89 f7 e8 6b 49 fd ff <0f> 0b e8 c4 eb ce ff 4c 8b b4 24 d8 00 00 00 49 83 ee 01 e9 ee f3
RSP: 0018:ffffc9000d4f7880 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffffea000001dc00 RCX: ffffffff81a2bb35
RDX: ffff888079452340 RSI: ffffffff81a2bb84 RDI: ffffea000001dc38
RBP: ffffea000001dc34 R08: 0000000000000059 R09: ffff8880ae720f8b
R10: ffffffffffffffff R11: 0000000000000001 R12: 0000000000770055
R13: dffffc0000000000 R14: ffffea000001dc00 R15: 0000000000000015
FS:  00007f039c88f700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f039c88edb8 CR3: 00000000531c2000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 dup_mmap kernel/fork.c:592 [inline]
 dup_mm+0x98f/0x1300 kernel/fork.c:1354
 copy_mm kernel/fork.c:1410 [inline]
 copy_process+0x28e4/0x6920 kernel/fork.c:2069
 _do_fork+0xe8/0xb10 kernel/fork.c:2428
 __do_sys_clone+0xc8/0x110 kernel/fork.c:2545
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45d5b9
Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f039c88ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000001f40 RCX: 000000000045d5b9
RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000000118d0d0 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118d08c
R13: 00007ffec024adbf R14: 00007f039c88f9c0 R15: 000000000118d08c
Modules linked in:
---[ end trace 66ee6cc1fdef66b5 ]---
RIP: 0010:get_page include/linux/mm.h:1153 [inline]
RIP: 0010:copy_one_pte mm/memory.c:805 [inline]
RIP: 0010:copy_pte_range mm/memory.c:854 [inline]
RIP: 0010:copy_pmd_range mm/memory.c:905 [inline]
RIP: 0010:copy_pud_range mm/memory.c:939 [inline]
RIP: 0010:copy_p4d_range mm/memory.c:961 [inline]
RIP: 0010:copy_page_range+0x1b65/0x2810 mm/memory.c:1023
Code: ff e8 ef eb ce ff 0f 0b e8 e8 eb ce ff 0f 0b e8 e1 eb ce ff 0f 0b e8 da eb ce ff 48 c7 c6 20 1c 55 88 4c 89 f7 e8 6b 49 fd ff <0f> 0b e8 c4 eb ce ff 4c 8b b4 24 d8 00 00 00 49 83 ee 01 e9 ee f3
RSP: 0018:ffffc9000d4f7880 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffffea000001dc00 RCX: ffffffff81a2bb35
RDX: ffff888079452340 RSI: ffffffff81a2bb84 RDI: ffffea000001dc38
RBP: ffffea000001dc34 R08: 0000000000000059 R09: ffff8880ae720f8b
R10: ffffffffffffffff R11: 0000000000000001 R12: 0000000000770055
R13: dffffc0000000000 R14: ffffea000001dc00 R15: 0000000000000015
FS:  00007f039c88f700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f039c88edb8 CR3: 00000000531c2000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400