handle_softirqs+0x27d/0x880 kernel/softirq.c:626
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1067
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
------------[ cut here ]------------
kernel BUG at mm/filemap.c:1531!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 15857 Comm: syz.3.3128 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:folio_end_read+0x22e/0x230 mm/filemap.c:1531
Code: 54 c7 ff 48 89 df 48 c7 c6 80 84 74 8b e8 8a 89 2d ff 90 0f 0b e8 92 54 c7 ff 48 89 df 48 c7 c6 e0 7c 74 8b e8 73 89 2d ff 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa
RSP: 0018:ffffc9000d4d75e8 EFLAGS: 00010246
RAX: 3aa087cf534de400 RBX: ffffea0001a92d40 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8d78e538 RDI: 00000000ffffffff
RBP: 0000000000000001 R08: ffffffff8f7de477 R09: 1ffffffff1efbc8e
R10: dffffc0000000000 R11: fffffbfff1efbc8f R12: 1ffffd40003525a9
R13: 1ffffd40003525a8 R14: ffffea0001a92d48 R15: 0000000000000008
FS:  00007f211d2166c0(0000) GS:ffff888125ebc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbad4804000 CR3: 000000003323c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 iomap_read_folio+0x373/0x580 fs/iomap/buffered-io.c:578
 iomap_bio_read_folio include/linux/iomap.h:598 [inline]
 erofs_read_folio+0x12c/0x2e0 fs/erofs/data.c:374
 filemap_read_folio+0x117/0x380 mm/filemap.c:2496
 do_read_cache_folio+0x358/0x590 mm/filemap.c:4095
 read_mapping_folio include/linux/pagemap.h:1017 [inline]
 erofs_bread+0x46f/0x7f0 fs/erofs/data.c:40
 erofs_find_target_block fs/erofs/namei.c:103 [inline]
 erofs_namei+0x36b/0x1030 fs/erofs/namei.c:177
 erofs_lookup+0x138/0x340 fs/erofs/namei.c:206
 lookup_one_qstr_excl+0x131/0x360 fs/namei.c:1744
 __start_dirop fs/namei.c:2835 [inline]
 start_dirop fs/namei.c:2844 [inline]
 filename_create+0x209/0x360 fs/namei.c:4848
 do_mkdirat+0xca/0x4b0 fs/namei.c:5125
 __do_sys_mkdirat fs/namei.c:5155 [inline]
 __se_sys_mkdirat fs/namei.c:5153 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:5153
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f211c38de97
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 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:00007f211d215e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f211d215ef0 RCX: 00007f211c38de97
RDX: 00000000000001ff RSI: 0000200000002080 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000002080
R13: 00007f211d215eb0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_end_read+0x22e/0x230 mm/filemap.c:1531
Code: 54 c7 ff 48 89 df 48 c7 c6 80 84 74 8b e8 8a 89 2d ff 90 0f 0b e8 92 54 c7 ff 48 89 df 48 c7 c6 e0 7c 74 8b e8 73 89 2d ff 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa
RSP: 0018:ffffc9000d4d75e8 EFLAGS: 00010246
RAX: 3aa087cf534de400 RBX: ffffea0001a92d40 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8d78e538 RDI: 00000000ffffffff
RBP: 0000000000000001 R08: ffffffff8f7de477 R09: 1ffffffff1efbc8e
R10: dffffc0000000000 R11: fffffbfff1efbc8f R12: 1ffffd40003525a9
R13: 1ffffd40003525a8 R14: ffffea0001a92d48 R15: 0000000000000008
FS:  00007f211d2166c0(0000) GS:ffff888125ebc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe519a35000 CR3: 000000003323c000 CR4: 00000000003526f0