__lookup_slow+0x155/0x320 fs/namei.c:1919
 lookup_slow+0x50/0x70 fs/namei.c:1936
 walk_component fs/namei.c:2282 [inline]
 link_path_walk+0x1712/0x1cc0 fs/namei.c:2653
 path_parentat fs/namei.c:2860 [inline]
 __filename_parentat+0x213/0x740 fs/namei.c:2884
 filename_parentat fs/namei.c:2902 [inline]
 filename_create+0xbe/0x400 fs/namei.c:4936
 filename_mkdirat+0xb9/0x5e0 fs/namei.c:5302
 __do_sys_mkdirat fs/namei.c:5330 [inline]
 __se_sys_mkdirat fs/namei.c:5327 [inline]
 __x64_sys_mkdirat+0x89/0xc0 fs/namei.c:5327
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:858!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 20346 Comm: syz.0.6304 Tainted: G             L      syzkaller #0 PREEMPT(lazy) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:__filemap_add_folio+0x1033/0x12f0 mm/filemap.c:858
Code: 41 c1 ff 48 c7 c6 e0 a3 dd 8b 4c 89 ef e8 c5 ee 12 00 90 0f 0b e8 9d 41 c1 ff 48 c7 c6 40 a4 dd 8b 4c 89 ef e8 ae ee 12 00 90 <0f> 0b e8 86 41 c1 ff 90 0f 0b 90 e9 76 fe ff ff e8 78 41 c1 ff 90
RSP: 0018:ffffc9000409f3f8 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000112c00 RCX: ffffc9000ea5a000
RDX: 0000000000080000 RSI: ffffffff825c2128 RDI: ffff8880349884c4
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000002
R13: ffffea0001d60740 R14: 0000000000000000 R15: 1ffff92000813eaa
FS:  00007f5899ac26c0(0000) GS:ffff888123dec000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2781a0 CR3: 000000006a636000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 filemap_add_folio+0x1d3/0x630 mm/filemap.c:972
 ra_alloc_folio mm/readahead.c:470 [inline]
 page_cache_ra_order+0x602/0xed0 mm/readahead.c:535
 do_sync_mmap_readahead mm/filemap.c:3434 [inline]
 filemap_fault+0x1943/0x3130 mm/filemap.c:3588
 __do_fault+0x10b/0x440 mm/memory.c:5425
 do_read_fault mm/memory.c:5860 [inline]
 do_fault+0xa99/0x1750 mm/memory.c:5994
 do_pte_missing mm/memory.c:4566 [inline]
 handle_pte_fault mm/memory.c:6379 [inline]
 __handle_mm_fault+0x187d/0x2a00 mm/memory.c:6517
 handle_mm_fault+0x37b/0xa30 mm/memory.c:6686
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0x1178/0x32a0 mm/gup.c:1428
 populate_vma_page_range+0x267/0x3f0 mm/gup.c:1860
 __mm_populate+0x107/0x3a0 mm/gup.c:1963
 mm_populate include/linux/mm.h:4171 [inline]
 vm_mmap_pgoff+0x37f/0x470 mm/util.c:586
 ksys_mmap_pgoff+0x3cb/0x610 mm/mmap.c:606
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline]
 __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5898b9e0d9
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:00007f5899ac2028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f5898e26090 RCX: 00007f5898b9e0d9
RDX: 0000000000000007 RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f5898c35024 R08: 0000000000000004 R09: 000000002cb25000
R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5898e26128 R14: 00007f5898e26090 R15: 00007ffe92261fd8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x1033/0x12f0 mm/filemap.c:858
Code: 41 c1 ff 48 c7 c6 e0 a3 dd 8b 4c 89 ef e8 c5 ee 12 00 90 0f 0b e8 9d 41 c1 ff 48 c7 c6 40 a4 dd 8b 4c 89 ef e8 ae ee 12 00 90 <0f> 0b e8 86 41 c1 ff 90 0f 0b 90 e9 76 fe ff ff e8 78 41 c1 ff 90
RSP: 0018:ffffc9000409f3f8 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000112c00 RCX: ffffc9000ea5a000
RDX: 0000000000080000 RSI: ffffffff825c2128 RDI: ffff8880349884c4
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000002
R13: ffffea0001d60740 R14: 0000000000000000 R15: 1ffff92000813eaa
FS:  00007f5899ac26c0(0000) GS:ffff888123dec000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32712ff8 CR3: 000000006a636000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600