arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:154!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 12271 Comm: syz.4.1654 Not tainted 6.14.0-rc2-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:filemap_unaccount_folio+0xef/0x860 mm/filemap.c:154
Code: f7 35 ca ff 4c 8d 6b 30 31 ff 89 ee e8 ea 30 ca ff 85 ed 7e 17 e8 e1 35 ca ff 48 c7 c6 c0 8b 78 8b 48 89 df e8 42 94 11 00 90 <0f> 0b e8 ca 35 ca ff 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1
RSP: 0018:ffffc900035df3b0 EFLAGS: 00010093
RAX: 0000000000000000 RBX: ffffea0001969640 RCX: ffffc900035df258
RDX: ffff888056be8000 RSI: ffffffff81ef9e0e RDI: ffff888056be8444
RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff20c46c2
R10: ffffffff90623617 R11: 0000000000000003 R12: ffff888029d12ad0
R13: ffffea0001969670 R14: 0000000000000000 R15: ffffc900035df618
FS:  0000000000000000(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556e6635c8 CR3: 000000003bd4e000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __filemap_remove_folio mm/filemap.c:223 [inline]
 filemap_remove_folio+0xf1/0x250 mm/filemap.c:256
 truncate_inode_folio+0x49/0x70 mm/truncate.c:162
 shmem_undo_range+0x36e/0x1170 mm/shmem.c:1108
 shmem_truncate_range mm/shmem.c:1224 [inline]
 shmem_evict_inode+0x3a3/0xba0 mm/shmem.c:1352
 evict+0x409/0x960 fs/inode.c:796
 iput_final fs/inode.c:1946 [inline]
 iput fs/inode.c:1972 [inline]
 iput+0x52a/0x890 fs/inode.c:1958
 dentry_unlink_inode+0x29c/0x480 fs/dcache.c:440
 __dentry_kill+0x1d0/0x600 fs/dcache.c:643
 dput.part.0+0x4b1/0x9b0 fs/dcache.c:885
 dput+0x1f/0x30 fs/dcache.c:875
 __fput+0x51c/0xb70 fs/file_table.c:472
 task_work_run+0x14e/0x250 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0xad8/0x2d70 kernel/exit.c:938
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
 get_signal+0x24ed/0x26c0 kernel/signal.c:3036
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3ec998cde9
Code: Unable to access opcode bytes at 0x7f3ec998cdbf.
RSP: 002b:00007f3eca80f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f3ec9ba6248 RCX: 00007f3ec998cde9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f3ec9ba6248
RBP: 00007f3ec9ba6240 R08: 00007ffc1ca8c8c7 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3ec9ba624c
R13: 0000000000000001 R14: 00007ffc1ca8c7e0 R15: 00007ffc1ca8c8c8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:filemap_unaccount_folio+0xef/0x860 mm/filemap.c:154
Code: f7 35 ca ff 4c 8d 6b 30 31 ff 89 ee e8 ea 30 ca ff 85 ed 7e 17 e8 e1 35 ca ff 48 c7 c6 c0 8b 78 8b 48 89 df e8 42 94 11 00 90 <0f> 0b e8 ca 35 ca ff 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1
RSP: 0018:ffffc900035df3b0 EFLAGS: 00010093
RAX: 0000000000000000 RBX: ffffea0001969640 RCX: ffffc900035df258
RDX: ffff888056be8000 RSI: ffffffff81ef9e0e RDI: ffff888056be8444
RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff20c46c2
R10: ffffffff90623617 R11: 0000000000000003 R12: ffff888029d12ad0
R13: ffffea0001969670 R14: 0000000000000000 R15: ffffc900035df618
FS:  0000000000000000(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556e6635c8 CR3: 000000003bd4e000 CR4: 0000000000352ef0