unix_dgram_sendmsg+0x460/0x18e0 net/unix/af_unix.c:2130
 sock_sendmsg_nosec+0x18f/0x1d0 net/socket.c:737
 __sock_sendmsg net/socket.c:752 [inline]
 __sys_sendto+0x3ff/0x590 net/socket.c:2221
 __do_sys_sendto net/socket.c:2228 [inline]
 __se_sys_sendto net/socket.c:2224 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2224
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:859!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 10680 Comm: syz.2.2200 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:__filemap_add_folio+0x11bc/0x1350 mm/filemap.c:858
Code: 5b c5 ff 4c 89 e7 48 c7 c6 20 a6 d7 8b e8 6c 8a 27 ff 90 0f 0b e8 c4 5b c5 ff 4c 89 e7 48 c7 c6 c0 9a d7 8b e8 55 8a 27 ff 90 <0f> 0b e8 ad 5b c5 ff 4c 89 e7 48 c7 c6 20 a6 d7 8b e8 3e 8a 27 ff
RSP: 0018:ffffc9001b09f1e0 EFLAGS: 00010246
RAX: 2891db6073629300 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8e0094b3 RDI: 00000000ffffffff
RBP: ffffc9001b09f360 R08: ffffffff903352b7 R09: 1ffffffff2066a56
R10: dffffc0000000000 R11: fffffbfff2066a57 R12: ffffea00012db580
R13: dffffc0000000000 R14: ffffea00012db588 R15: 0000000000000004
FS:  00007f3e9c8ae6c0(0000) GS:ffff888125116000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30d1fff8 CR3: 0000000058fdc000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 filemap_add_folio+0x264/0x530 mm/filemap.c:966
 ra_alloc_folio mm/readahead.c:456 [inline]
 page_cache_ra_order+0x6b5/0xeb0 mm/readahead.c:515
 do_sync_mmap_readahead+0x6ad/0x8e0 mm/filemap.c:3400
 filemap_fault+0x6e2/0x1320 mm/filemap.c:3549
 __do_fault+0x138/0x390 mm/memory.c:5365
 do_cow_fault mm/memory.c:5830 [inline]
 do_fault mm/memory.c:5936 [inline]
 do_pte_missing+0x1006/0x3750 mm/memory.c:4479
 handle_pte_fault mm/memory.c:6318 [inline]
 __handle_mm_fault mm/memory.c:6456 [inline]
 handle_mm_fault+0x1bec/0x3310 mm/memory.c:6625
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0x165b/0x29d0 mm/gup.c:1428
 populate_vma_page_range+0x2be/0x3c0 mm/gup.c:1860
 __mm_populate+0x25f/0x390 mm/gup.c:1963
 mm_populate include/linux/mm.h:3899 [inline]
 vm_mmap_pgoff+0x3aa/0x4f0 mm/util.c:586
 ksys_mmap_pgoff+0x51e/0x760 mm/mmap.c:605
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3e9b99af79
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:00007f3e9c8ae028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f3e9bc16090 RCX: 00007f3e9b99af79
RDX: 0000000002000007 RSI: 0000000000003000 RDI: 0000200000888000
RBP: 00007f3e9ba316e0 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000004002012 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3e9bc16128 R14: 00007f3e9bc16090 R15: 00007ffe371520f8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x11bc/0x1350 mm/filemap.c:858
Code: 5b c5 ff 4c 89 e7 48 c7 c6 20 a6 d7 8b e8 6c 8a 27 ff 90 0f 0b e8 c4 5b c5 ff 4c 89 e7 48 c7 c6 c0 9a d7 8b e8 55 8a 27 ff 90 <0f> 0b e8 ad 5b c5 ff 4c 89 e7 48 c7 c6 20 a6 d7 8b e8 3e 8a 27 ff
RSP: 0018:ffffc9001b09f1e0 EFLAGS: 00010246
RAX: 2891db6073629300 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8e0094b3 RDI: 00000000ffffffff
RBP: ffffc9001b09f360 R08: ffffffff903352b7 R09: 1ffffffff2066a56
R10: dffffc0000000000 R11: fffffbfff2066a57 R12: ffffea00012db580
R13: dffffc0000000000 R14: ffffea00012db588 R15: 0000000000000004
FS:  00007f3e9c8ae6c0(0000) GS:ffff888125016000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f48a89e3ad8 CR3: 0000000058fdc000 CR4: 00000000003526f0