__sys_bpf+0x4a3f/0x4de0 kernel/bpf/syscall.c:6029
 __do_sys_bpf kernel/bpf/syscall.c:6139 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6137 [inline]
 __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:6137
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:867!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 6754 Comm: syz.0.150 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__filemap_add_folio+0xf5b/0x11e0 mm/filemap.c:867
Code: 78 c8 ff 48 c7 c6 60 24 b9 8b 4c 89 ef e8 9d 28 11 00 90 0f 0b e8 15 78 c8 ff 48 c7 c6 c0 24 b9 8b 4c 89 ef e8 86 28 11 00 90 <0f> 0b e8 fe 77 c8 ff 90 0f 0b 90 e9 f2 fb ff ff e8 f0 77 c8 ff 48
RSP: 0018:ffffc900037f6cd0 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000000000 RCX: ffffc9000d834000
RDX: 0000000000080000 RSI: ffffffff81f3165a RDI: ffff888055d9a884
RBP: 0000000000112cc0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90ab5c97 R11: 0000000000000000 R12: 0000000000000002
R13: ffffea0001993880 R14: 0000000000000000 R15: 0000000000000220
FS:  00007f3826bdc6c0(0000) GS:ffff8881247b8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc443bc9f98 CR3: 000000007d895000 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+0x10a/0x490 mm/memory.c:5152
 do_read_fault mm/memory.c:5573 [inline]
 do_fault mm/memory.c:5707 [inline]
 do_pte_missing+0xf50/0x3ba0 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
 faultin_page mm/gup.c:1144 [inline]
 __get_user_pages+0x551/0x34a0 mm/gup.c:1446
 __get_user_pages_locked mm/gup.c:1712 [inline]
 __gup_longterm_locked+0xa92/0x17e0 mm/gup.c:2488
 gup_fast_fallback+0xf78/0x23f0 mm/gup.c:3232
 pin_user_pages_fast+0xa7/0xf0 mm/gup.c:3338
 iov_iter_extract_user_pages lib/iov_iter.c:1846 [inline]
 iov_iter_extract_pages+0x3a2/0x1ed0 lib/iov_iter.c:1909
 __bio_iov_iter_get_pages block/bio.c:1237 [inline]
 bio_iov_iter_get_pages+0x384/0x10d0 block/bio.c:1336
 __blkdev_direct_IO block/fops.c:215 [inline]
 blkdev_direct_IO+0x1401/0x1fe0 block/fops.c:433
 blkdev_direct_write block/fops.c:716 [inline]
 blkdev_write_iter+0x703/0xe00 block/fops.c:784
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x7d3/0x11d0 fs/read_write.c:686
 ksys_write+0x12a/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3825d8ebe9
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:00007f3826bdc038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3825fc6090 RCX: 00007f3825d8ebe9
RDX: 00000000fffffd2c RSI: 0000200000000000 RDI: 0000000000000007
RBP: 00007f3825e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3825fc6128 R14: 00007f3825fc6090 R15: 00007ffc402486f8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0xf5b/0x11e0 mm/filemap.c:867
Code: 78 c8 ff 48 c7 c6 60 24 b9 8b 4c 89 ef e8 9d 28 11 00 90 0f 0b e8 15 78 c8 ff 48 c7 c6 c0 24 b9 8b 4c 89 ef e8 86 28 11 00 90 <0f> 0b e8 fe 77 c8 ff 90 0f 0b 90 e9 f2 fb ff ff e8 f0 77 c8 ff 48
RSP: 0018:ffffc900037f6cd0 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000000000 RCX: ffffc9000d834000
RDX: 0000000000080000 RSI: ffffffff81f3165a RDI: ffff888055d9a884
RBP: 0000000000112cc0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90ab5c97 R11: 0000000000000000 R12: 0000000000000002
R13: ffffea0001993880 R14: 0000000000000000 R15: 0000000000000220
FS:  00007f3826bdc6c0(0000) GS:ffff8881246b8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b322faff8 CR3: 000000007d895000 CR4: 00000000003526f0