populate_vma_page_range+0x26b/0x340 mm/gup.c:1926
 __mm_populate+0x24c/0x380 mm/gup.c:2029
 mm_populate include/linux/mm.h:3353 [inline]
 vm_mmap_pgoff+0x3f0/0x4c0 mm/util.c:584
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:868!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 12181 Comm: syz.5.1395 Not tainted 6.16.0-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__filemap_add_folio+0x11ad/0x12f0 mm/filemap.c:867
Code: 6c ca ff 4c 89 e7 48 c7 c6 00 2e 94 8b e8 0b 99 0e 00 90 0f 0b e8 53 6c ca ff 4c 89 e7 48 c7 c6 e0 24 94 8b e8 f4 98 0e 00 90 <0f> 0b e8 3c 6c ca ff 4c 89 e7 48 c7 c6 00 2e 94 8b e8 dd 98 0e 00
RSP: 0018:ffffc9000212eee0 EFLAGS: 00010246
RAX: fca284066dc5d100 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8d982fba RDI: 00000000ffffffff
RBP: ffffc9000212f048 R08: ffffffff8fa0b3f7 R09: 1ffffffff1f4167e
R10: dffffc0000000000 R11: fffffbfff1f4167f R12: ffffea0000be2e00
R13: dffffc0000000000 R14: ffffea0000be2e08 R15: 0000000000000004
FS:  00007f65834756c0(0000) GS:ffff888125c57000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8595b812f8 CR3: 000000002f046000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 filemap_add_folio+0xd5/0x270 mm/filemap.c:969
 ra_alloc_folio mm/readahead.c:448 [inline]
 page_cache_ra_order+0x74c/0xc70 mm/readahead.c:509
 do_async_mmap_readahead mm/filemap.c:3299 [inline]
 filemap_fault+0x59e/0x1200 mm/filemap.c:3398
 __do_fault+0x138/0x390 mm/memory.c:5169
 do_read_fault mm/memory.c:5590 [inline]
 do_fault mm/memory.c:5724 [inline]
 do_pte_missing mm/memory.c:4251 [inline]
 handle_pte_fault mm/memory.c:6069 [inline]
 __handle_mm_fault+0x37ed/0x5620 mm/memory.c:6212
 handle_mm_fault+0x2d5/0x7f0 mm/memory.c:6381
 faultin_page mm/gup.c:1186 [inline]
 __get_user_pages+0x1af4/0x30b0 mm/gup.c:1488
 __get_user_pages_locked mm/gup.c:1754 [inline]
 __gup_longterm_locked+0xd66/0x15b0 mm/gup.c:2512
 gup_fast_fallback+0x1cd4/0x2260 mm/gup.c:3363
 iommufd_test_md_check_refs drivers/iommu/iommufd/selftest.c:1199 [inline]
 iommufd_test+0x1dcc/0x5170 drivers/iommu/iommufd/selftest.c:1913
 iommufd_fops_ioctl+0x446/0x520 drivers/iommu/iommufd/main.c:419
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f658258ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6583475038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f65827b6090 RCX: 00007f658258ebe9
RDX: 00002000000001c0 RSI: 0000000000003ba0 RDI: 000000000000000c
RBP: 00007f6582611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f65827b6128 R14: 00007f65827b6090 R15: 00007ffca9dee868
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x11ad/0x12f0 mm/filemap.c:867
Code: 6c ca ff 4c 89 e7 48 c7 c6 00 2e 94 8b e8 0b 99 0e 00 90 0f 0b e8 53 6c ca ff 4c 89 e7 48 c7 c6 e0 24 94 8b e8 f4 98 0e 00 90 <0f> 0b e8 3c 6c ca ff 4c 89 e7 48 c7 c6 00 2e 94 8b e8 dd 98 0e 00
RSP: 0018:ffffc9000212eee0 EFLAGS: 00010246
RAX: fca284066dc5d100 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8d982fba RDI: 00000000ffffffff
RBP: ffffc9000212f048 R08: ffffffff8fa0b3f7 R09: 1ffffffff1f4167e
R10: dffffc0000000000 R11: fffffbfff1f4167f R12: ffffea0000be2e00
R13: dffffc0000000000 R14: ffffea0000be2e08 R15: 0000000000000004
FS:  00007f65834756c0(0000) GS:ffff888125d57000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5e5a784fe8 CR3: 000000002f046000 CR4: 00000000003526f0