__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4953 [inline]
 slab_alloc_node mm/slub.c:5267 [inline]
 __do_kmalloc_node mm/slub.c:5660 [inline]
 __kmalloc_node_track_caller_noprof+0x526/0x820 mm/slub.c:5768
 kmalloc_reserve+0x136/0x290 net/core/skbuff.c:608
 __alloc_skb+0x27e/0x430 net/core/skbuff.c:690
 alloc_skb include/linux/skbuff.h:1383 [inline]
 alloc_skb_with_frags+0xca/0x890 net/core/skbuff.c:6712
 sock_alloc_send_pskb+0x84d/0x980 net/core/sock.c:2995
 unix_dgram_sendmsg+0x454/0x1840 net/unix/af_unix.c:2130
 sock_sendmsg_nosec+0x18f/0x1d0 net/socket.c:737
 __sock_sendmsg net/socket.c:752 [inline]
 sock_write_iter+0x2d9/0x3d0 net/socket.c:1210
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
------------[ cut here ]------------
kernel BUG at mm/filemap.c:859!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 24101 Comm: syz.2.2244 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__filemap_add_folio+0x118b/0x12d0 mm/filemap.c:858
Code: 89 c7 ff 4c 89 e7 48 c7 c6 40 b4 94 8b e8 bd 9c 2d ff 90 0f 0b e8 b5 89 c7 ff 4c 89 e7 48 c7 c6 20 ab 94 8b e8 a6 9c 2d ff 90 <0f> 0b e8 9e 89 c7 ff 4c 89 e7 48 c7 c6 40 b4 94 8b e8 8f 9c 2d ff
RSP: 0018:ffffc9000ef571e0 EFLAGS: 00010246
RAX: 30d2db33149be300 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8daa9dc3 RDI: 00000000ffffffff
RBP: ffffc9000ef57360 R08: ffffffff8fc3d077 R09: 1ffffffff1f87a0e
R10: dffffc0000000000 R11: fffffbfff1f87a0f R12: ffffea0000f9d440
R13: dffffc0000000000 R14: ffffea0000f9d448 R15: 0000000000000004
FS:  00007f9ab2ff66c0(0000) GS:ffff888125adc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7d3e772a60 CR3: 0000000060312000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 filemap_add_folio+0x26d/0x540 mm/filemap.c:966
 ra_alloc_folio mm/readahead.c:453 [inline]
 page_cache_ra_order+0x6a7/0xe50 mm/readahead.c:512
 do_sync_mmap_readahead+0x66a/0x870 mm/filemap.c:3400
 filemap_fault+0x6ac/0x1290 mm/filemap.c:3549
 __do_fault+0x138/0x390 mm/memory.c:5320
 do_read_fault mm/memory.c:5755 [inline]
 do_fault mm/memory.c:5889 [inline]
 do_pte_missing+0x2208/0x3330 mm/memory.c:4401
 handle_pte_fault mm/memory.c:6273 [inline]
 __handle_mm_fault mm/memory.c:6411 [inline]
 handle_mm_fault+0x1b26/0x32b0 mm/memory.c:6580
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0x1650/0x29f0 mm/gup.c:1428
 populate_vma_page_range+0x29f/0x3a0 mm/gup.c:1860
 __mm_populate+0x24c/0x380 mm/gup.c:1963
 mm_populate include/linux/mm.h:3748 [inline]
 vm_mmap_pgoff+0x387/0x4d0 mm/util.c:586
 ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:604
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9ab4d8f749
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:00007f9ab2ff6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f9ab4fe6090 RCX: 00007f9ab4d8f749
RDX: 0000000001000002 RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f9ab4e13f91 R08: 000000000000000e R09: 000000002c93a000
R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9ab4fe6128 R14: 00007f9ab4fe6090 R15: 00007ffe912ac158
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x118b/0x12d0 mm/filemap.c:858
Code: 89 c7 ff 4c 89 e7 48 c7 c6 40 b4 94 8b e8 bd 9c 2d ff 90 0f 0b e8 b5 89 c7 ff 4c 89 e7 48 c7 c6 20 ab 94 8b e8 a6 9c 2d ff 90 <0f> 0b e8 9e 89 c7 ff 4c 89 e7 48 c7 c6 40 b4 94 8b e8 8f 9c 2d ff
RSP: 0018:ffffc9000ef571e0 EFLAGS: 00010246
RAX: 30d2db33149be300 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8daa9dc3 RDI: 00000000ffffffff
RBP: ffffc9000ef57360 R08: ffffffff8fc3d077 R09: 1ffffffff1f87a0e
R10: dffffc0000000000 R11: fffffbfff1f87a0f R12: ffffea0000f9d440
R13: dffffc0000000000 R14: ffffea0000f9d448 R15: 0000000000000004
FS:  00007f9ab2ff66c0(0000) GS:ffff888125adc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055cadcf43950 CR3: 0000000060312000 CR4: 00000000003526f0