syzbot

 hwsim_new_radio_nl+0xb51/0x12c0 drivers/net/wireless/virtual/mac80211_hwsim.c:6252
 genl_family_rcv_msg_doit+0x206/0x2f0 net/netlink/genetlink.c:1115
 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
 genl_rcv_msg+0x55c/0x800 net/netlink/genetlink.c:1210
 netlink_rcv_skb+0x155/0x420 net/netlink/af_netlink.c:2552
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1346
------------[ cut here ]------------
kernel BUG at mm/filemap.c:867!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 6168 Comm: syz.2.53 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__filemap_add_folio+0xf5b/0x11e0 mm/filemap.c:867
Code: 77 c8 ff 48 c7 c6 60 24 b9 8b 4c 89 ef e8 9d 28 11 00 90 0f 0b e8 a5 77 c8 ff 48 c7 c6 c0 24 b9 8b 4c 89 ef e8 86 28 11 00 90 <0f> 0b e8 8e 77 c8 ff 90 0f 0b 90 e9 f2 fb ff ff e8 80 77 c8 ff 48
RSP: 0018:ffffc900030b7810 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88802e184880 RSI: ffffffff81f3173a RDI: ffff88802e184cc4
RBP: 0000000000112cc0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90ab6b97 R11: 0000000000000001 R12: 0000000000000002
R13: ffffea000165fd40 R14: 0000000000000000 R15: 0000000000000000
FS:  000055557af78500(0000) GS:ffff8881246b5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbdd1d056c0 CR3: 000000003352d000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 filemap_add_folio+0x10e/0x220 mm/filemap.c:969
 ra_alloc_folio mm/readahead.c:448 [inline]
 page_cache_ra_order+0x5a7/0xd70 mm/readahead.c:506
 do_sync_mmap_readahead mm/filemap.c:3304 [inline]
 filemap_fault+0x152e/0x2930 mm/filemap.c:3445
 __do_fault+0x10d/0x490 mm/memory.c:5152
 do_shared_fault mm/memory.c:5637 [inline]
 do_fault mm/memory.c:5711 [inline]
 do_pte_missing+0x1a6/0x3ba0 mm/memory.c:4234
 handle_pte_fault mm/memory.c:6052 [inline]
 __handle_mm_fault+0x152a/0x2a50 mm/memory.c:6195
 handle_mm_fault+0x589/0xd10 mm/memory.c:6364
 do_user_addr_fault+0x60c/0x1370 arch/x86/mm/fault.c:1336
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x5c/0xb0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f9aa8d58088
Code: 66 89 74 17 02 88 0f c3 c5 fa 6f 06 c5 fa 6f 4c 16 f0 c5 fa 7f 07 c5 fa 7f 4c 17 f0 c3 0f 1f 44 00 00 48 8b 4c 16 f8 48 8b 36 <48> 89 37 48 89 4c 17 f8 c3 62 e1 fe 28 6f 54 16 ff 62 e1 fe 28 6f
RSP: 002b:00007ffc1919e138 EFLAGS: 00010202
RAX: 0000200000000080 RBX: 0000000000000004 RCX: 0030626c6c756e2f
RDX: 000000000000000c RSI: 6c756e2f7665642f RDI: 0000200000000080
RBP: 0000000000000000 R08: 0000001b30720000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000009 R12: 00007f9aa8fd5fac
R13: 00007f9aa8fd5fa0 R14: fffffffffffffffe R15: 0000000000000006
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0xf5b/0x11e0 mm/filemap.c:867
Code: 77 c8 ff 48 c7 c6 60 24 b9 8b 4c 89 ef e8 9d 28 11 00 90 0f 0b e8 a5 77 c8 ff 48 c7 c6 c0 24 b9 8b 4c 89 ef e8 86 28 11 00 90 <0f> 0b e8 8e 77 c8 ff 90 0f 0b 90 e9 f2 fb ff ff e8 80 77 c8 ff 48
RSP: 0018:ffffc900030b7810 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88802e184880 RSI: ffffffff81f3173a RDI: ffff88802e184cc4
RBP: 0000000000112cc0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90ab6b97 R11: 0000000000000001 R12: 0000000000000002
R13: ffffea000165fd40 R14: 0000000000000000 R15: 0000000000000000
FS:  000055557af78500(0000) GS:ffff8881246b5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555798ef808 CR3: 000000003352d000 CR4: 00000000003526f0