raw: 05ffc80000080015 ffff0000cea52118 fffffc0003e42a88 ffff0000d13dc8d8
raw: 0000000000000000 0000000000000000 0000000400000000 ffff0000cea54000
page dumped because: VM_BUG_ON_FOLIO(folio_mapped(folio))
------------[ cut here ]------------
kernel BUG at mm/filemap.c:153!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 5256 Comm: syz.2.206 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
pstate: 824000c5 (Nzcv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : filemap_unaccount_folio+0x44c/0x4f0 mm/filemap.c:153
lr : filemap_unaccount_folio+0x44c/0x4f0 mm/filemap.c:153
sp : ffff8000227b71f0
x29: ffff8000227b71f0 x28: ffff8000227b7520 x27: 0000000000000000
x26: dfff800000000000 x25: ffff7000044f6e4c x24: 1fffff80007c8549
x23: ffff8000227b7280 x22: ffff0000d13dc8d8 x21: fffffc0003e42a58
x20: ffff0000d13dc8d8 x19: fffffc0003e42a40 x18: 0000000000000000
x17: 3030303066666666 x16: ffff8000082f4984 x15: 0000000000000000
x14: 0000000000000001 x13: 1ffff00002cbda24 x12: 0000000000000000
x11: ff008000087cdecc x10: 0000000000000000 x9 : ffff8000087cdecc
x8 : ffff0000ecc38000 x7 : ffff80000831424c x6 : 0000000000000000
x5 : 0000000000000080
 x4 : 0000000000000001
 x3 : ffff8000082f4a98
x2 : 0000000000000001 x1 : 0000000100000002 x0 : 0000000000000039
dump_backtrace(regs = 000000000f0516c3 tsk = 0000000000000000)
Call trace:
 filemap_unaccount_folio+0x44c/0x4f0 mm/filemap.c:153
 __filemap_remove_folio+0xc4/0x4fc mm/filemap.c:222
 filemap_remove_folio+0xd0/0x1c0 mm/filemap.c:255
 truncate_inode_folio+0x6c/0x84 mm/truncate.c:195
 shmem_undo_range+0x3c8/0x14a8 mm/shmem.c:942
 shmem_truncate_range mm/shmem.c:1062 [inline]
 shmem_evict_inode+0x200/0x8b0 mm/shmem.c:1171
 evict+0x3d8/0x824 fs/inode.c:705
 iput_final fs/inode.c:1834 [inline]
 iput+0x728/0x7e8 fs/inode.c:1860
 dentry_unlink_inode+0x360/0x438 fs/dcache.c:405
 __dentry_kill+0x318/0x590 fs/dcache.c:611
 dentry_kill+0xcc/0x24c fs/dcache.c:-1
 dput+0x228/0x444 fs/dcache.c:918
 __fput+0x480/0x7b0 fs/file_table.c:328
 ____fput+0x20/0x30 fs/file_table.c:348
 task_work_run+0x1f4/0x280 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x20f8/0x2c84 arch/arm64/kernel/signal.c:1151
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x12c arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: d004b5c1 91168021 aa1303e0 9403830c (d4210000) 
---[ end trace 0000000000000000 ]---