blkdev_bszset+0x1ac/0x220 block/ioctl.c:554
 blkdev_ioctl+0x430/0x6d0 block/ioctl.c:688
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:584
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:868!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 16001 Comm: syz.8.1983 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+0x11ad/0x12f0 mm/filemap.c:867
Code: 4d c9 ff 4c 89 e7 48 c7 c6 60 3b 94 8b e8 2b 9e 31 ff 90 0f 0b e8 a3 4d c9 ff 4c 89 e7 48 c7 c6 40 32 94 8b e8 14 9e 31 ff 90 <0f> 0b e8 8c 4d c9 ff 4c 89 e7 48 c7 c6 60 3b 94 8b e8 fd 9d 31 ff
RSP: 0018:ffffc900050971e0 EFLAGS: 00010246
RAX: 6c4bebf308e5e900 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8d9b7d7a RDI: 00000000ffffffff
RBP: ffffc90005097350 R08: ffffffff8fa38c37 R09: 1ffffffff1f47186
R10: dffffc0000000000 R11: fffffbfff1f47187 R12: ffffea0001a39ec0
R13: dffffc0000000000 R14: ffffea0001a39ec8 R15: 0000000000000002
FS:  00007feeef2676c0(0000) GS:ffff888125d1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f34a1df0340 CR3: 000000006647b000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 filemap_add_folio+0xd5/0x270 mm/filemap.c:969
 ra_alloc_folio mm/readahead.c:448 [inline]
 page_cache_ra_order+0x643/0xd40 mm/readahead.c:506
 do_sync_mmap_readahead+0x25e/0x7a0 mm/filemap.c:-1
 filemap_fault+0x62c/0x1200 mm/filemap.c:3445
 __do_fault+0x138/0x390 mm/memory.c:5152
 do_cow_fault mm/memory.c:5603 [inline]
 do_fault mm/memory.c:5709 [inline]
 do_pte_missing mm/memory.c:4234 [inline]
 handle_pte_fault mm/memory.c:6052 [inline]
 __handle_mm_fault+0x1719/0x5440 mm/memory.c:6195
 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6364
 faultin_page mm/gup.c:1144 [inline]
 __get_user_pages+0x1699/0x2ce0 mm/gup.c:1446
 __get_user_pages_locked mm/gup.c:1712 [inline]
 faultin_page_range+0x240/0x8d0 mm/gup.c:1932
 madvise_populate mm/madvise.c:979 [inline]
 madvise_do_behavior+0x2e7/0x550 mm/madvise.c:1883
 do_madvise+0x1bc/0x270 mm/madvise.c:1978
 __do_sys_madvise mm/madvise.c:1987 [inline]
 __se_sys_madvise mm/madvise.c:1985 [inline]
 __x64_sys_madvise+0xa7/0xc0 mm/madvise.c:1985
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feeee38ebe9
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:00007feeef267038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007feeee5b5fa0 RCX: 00007feeee38ebe9
RDX: 0000000000000017 RSI: 0000000000c00000 RDI: 0000200000000000
RBP: 00007feeee411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007feeee5b6038 R14: 00007feeee5b5fa0 R15: 00007ffcc94e14b8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x11ad/0x12f0 mm/filemap.c:867
Code: 4d c9 ff 4c 89 e7 48 c7 c6 60 3b 94 8b e8 2b 9e 31 ff 90 0f 0b e8 a3 4d c9 ff 4c 89 e7 48 c7 c6 40 32 94 8b e8 14 9e 31 ff 90 <0f> 0b e8 8c 4d c9 ff 4c 89 e7 48 c7 c6 60 3b 94 8b e8 fd 9d 31 ff
RSP: 0018:ffffc900050971e0 EFLAGS: 00010246
RAX: 6c4bebf308e5e900 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8d9b7d7a RDI: 00000000ffffffff
RBP: ffffc90005097350 R08: ffffffff8fa38c37 R09: 1ffffffff1f47186
R10: dffffc0000000000 R11: fffffbfff1f47187 R12: ffffea0001a39ec0
R13: dffffc0000000000 R14: ffffea0001a39ec8 R15: 0000000000000002
FS:  00007feeef2676c0(0000) GS:ffff888125c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555949c35c8 CR3: 000000006647b000 CR4: 0000000000350ef0