------------[ cut here ]------------
nr_pages <= 0
WARNING: ./include/linux/rmap.h:349 at __folio_rmap_sanity_checks include/linux/rmap.h:349 [inline], CPU#0: syz.0.17/5977
WARNING: ./include/linux/rmap.h:349 at __folio_add_rmap mm/rmap.c:1350 [inline], CPU#0: syz.0.17/5977
WARNING: ./include/linux/rmap.h:349 at __folio_add_file_rmap mm/rmap.c:1696 [inline], CPU#0: syz.0.17/5977
WARNING: ./include/linux/rmap.h:349 at folio_add_file_rmap_ptes+0x98a/0xe60 mm/rmap.c:1722, CPU#0: syz.0.17/5977
Modules linked in:
CPU: 0 UID: 0 PID: 5977 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__folio_rmap_sanity_checks include/linux/rmap.h:349 [inline]
RIP: 0010:__folio_add_rmap mm/rmap.c:1350 [inline]
RIP: 0010:__folio_add_file_rmap mm/rmap.c:1696 [inline]
RIP: 0010:folio_add_file_rmap_ptes+0x98a/0xe60 mm/rmap.c:1722
Code: 0b 90 e9 4c f7 ff ff e8 84 d1 ab ff 48 89 df 48 c7 c6 e0 44 9a 8b e8 d5 3e 11 ff 90 0f 0b 90 e9 9d f7 ff ff e8 67 d1 ab ff 90 <0f> 0b 90 e9 b2 f7 ff ff e8 59 d1 ab ff 49 ff cf e9 ea f7 ff ff e8
RSP: 0018:ffffc90003f675f0 EFLAGS: 00010293
RAX: ffffffff8216c889 RBX: ffffea000412fa00 RCX: ffff8881170c3a80
RDX: 0000000000000000 RSI: 00000000fb412000 RDI: 0000000000000001
RBP: 00000000fb412000 R08: f888304bee000000 R09: 1ffffd4000825f46
R10: dffffc0000000000 R11: fffff94000825f47 R12: dffffc0000000000
R13: ffffea000412fa30 R14: ffffea000412fa00 R15: 0000000000104be8
FS:  0000555589649500(0000) GS:ffff88818e324000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000040 CR3: 0000000114846000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 set_pte_range+0x538/0x8a0 mm/memory.c:5526
 finish_fault+0xec7/0x1290 mm/memory.c:5668
 do_read_fault mm/memory.c:5808 [inline]
 do_fault mm/memory.c:5938 [inline]
 do_pte_missing+0x216f/0x3210 mm/memory.c:4479
 handle_pte_fault mm/memory.c:6322 [inline]
 __handle_mm_fault mm/memory.c:6460 [inline]
 handle_mm_fault+0x1b8c/0x32b0 mm/memory.c:6629
 do_user_addr_fault+0x75b/0x1340 arch/x86/mm/fault.c:1387
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0010:rep_movs_alternative+0x51/0x90 arch/x86/lib/copy_user_64.S:81
Code: 84 00 00 00 00 00 0f 1f 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 db 83 f9 08 73 e8 eb c5 eb 05 c3 cc cc cc cc <48> 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 29 f8 48 01 c7 48 01
RSP: 0018:ffffc90003f67cf8 EFLAGS: 00010202
RAX: 00007ffffffff001 RBX: 0000000000000050 RCX: 0000000000000050
RDX: 0000000000000001 RSI: 0000200000000040 RDI: ffffc90003f67d60
RBP: ffffc90003f67eb8 R08: ffffc90003f67daf R09: 1ffff920007ecfb5
R10: dffffc0000000000 R11: fffff520007ecfb6 R12: dffffc0000000000
R13: 0000000000000050 R14: ffffc90003f67d60 R15: 0000200000000040
 copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline]
 raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline]
 _inline_copy_from_user include/linux/uaccess.h:185 [inline]
 _copy_from_user+0x7a/0xb0 lib/usercopy.c:18
 copy_from_user include/linux/uaccess.h:223 [inline]
 copy_from_bpfptr_offset include/linux/bpfptr.h:53 [inline]
 copy_from_bpfptr include/linux/bpfptr.h:59 [inline]
 __sys_bpf+0x229/0x920 kernel/bpf/syscall.c:6137
 __do_sys_bpf kernel/bpf/syscall.c:6274 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6272 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6272
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4fb5d9acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe24ca9848 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f4fb6015fa0 RCX: 00007f4fb5d9acb9
RDX: 0000000000000050 RSI: 0000200000000040 RDI: 0000000000000000
RBP: 00007f4fb5e08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4fb6015fac R14: 00007f4fb6015fa0 R15: 00007f4fb6015fa0
 </TASK>
----------------
Code disassembly (best guess):
   0:	84 00                	test   %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	0f 1f 00             	nopl   (%rax)
   9:	48 8b 06             	mov    (%rsi),%rax
   c:	48 89 07             	mov    %rax,(%rdi)
   f:	48 83 c6 08          	add    $0x8,%rsi
  13:	48 83 c7 08          	add    $0x8,%rdi
  17:	83 e9 08             	sub    $0x8,%ecx
  1a:	74 db                	je     0xfffffff7
  1c:	83 f9 08             	cmp    $0x8,%ecx
  1f:	73 e8                	jae    0x9
  21:	eb c5                	jmp    0xffffffe8
  23:	eb 05                	jmp    0x2a
  25:	c3                   	ret
  26:	cc                   	int3
  27:	cc                   	int3
  28:	cc                   	int3
  29:	cc                   	int3
* 2a:	48 8b 06             	mov    (%rsi),%rax <-- trapping instruction
  2d:	48 89 07             	mov    %rax,(%rdi)
  30:	48 8d 47 08          	lea    0x8(%rdi),%rax
  34:	48 83 e0 f8          	and    $0xfffffffffffffff8,%rax
  38:	48 29 f8             	sub    %rdi,%rax
  3b:	48 01 c7             	add    %rax,%rdi
  3e:	48                   	rex.W
  3f:	01                   	.byte 0x1