get_signal+0x16a1/0x1740 kernel/signal.c:2911
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
 __do_fast_syscall_32+0xc8/0x120 arch/x86/entry/common.c:389
 do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411
------------[ cut here ]------------
kernel BUG at mm/filemap.c:162!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 PID: 5488 Comm: syz-executor.1 Not tainted 6.9.0-rc6-syzkaller-00046-g18daea77cca6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:filemap_unaccount_folio+0x70d/0xc60 mm/filemap.c:162
Code: 25 ff 0f 00 00 0f 84 f0 00 00 00 e8 ad fc ca ff e9 6c f9 ff ff e8 a3 fc ca ff 4c 89 ef 48 c7 c6 e0 84 d3 8b e8 c4 35 14 00 90 <0f> 0b e8 8c fc ca ff 4c 89 ef 48 c7 c6 80 85 d3 8b e8 ad 35 14 00
RSP: 0018:ffffc9000356f618 EFLAGS: 00010046
RAX: 54dbd74a8925c500 RBX: 0000000000000000 RCX: ffffc9000356f203
RDX: 0000000000000002 RSI: ffffffff8bcaca20 RDI: ffffffff8c1f7ee0
RBP: 0000000000000000 R08: ffffffff8fa8f96f R09: 1ffffffff1f51f2d
R10: dffffc0000000000 R11: fffffbfff1f51f2e R12: 1ffffd40002ffe18
R13: ffffea00017ff0c0 R14: 1ffffd40002ffe19 R15: ffffea00017ff0c8
FS:  0000000000000000(0000) GS:ffff8880b9500000(0063) knlGS:0000000057594400
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000031e22000 CR3: 000000002dfc2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __filemap_remove_folio+0xc4/0x9e0 mm/filemap.c:231
 filemap_remove_folio+0x109/0x2e0 mm/filemap.c:264
 truncate_inode_folio+0x5d/0x70 mm/truncate.c:195
 shmem_undo_range+0x45d/0x1df0 mm/shmem.c:1001
 shmem_truncate_range mm/shmem.c:1114 [inline]
 shmem_evict_inode+0x29b/0xa60 mm/shmem.c:1242
 evict+0x2a8/0x630 fs/inode.c:667
 __dentry_kill+0x20d/0x630 fs/dcache.c:603
 dput+0x19f/0x2b0 fs/dcache.c:845
 __fput+0x678/0x8a0 fs/file_table.c:430
 __do_sys_close fs/open.c:1556 [inline]
 __se_sys_close fs/open.c:1541 [inline]
 __ia32_sys_close+0x7f/0x110 fs/open.c:1541
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb8/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7292579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f7533af0 EFLAGS: 00000206 ORIG_RAX: 0000000000000006
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000057594400
RDX: 0000000000000000 RSI: 00000000f73e9ff4 RDI: 00000000ffffffff
RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:filemap_unaccount_folio+0x70d/0xc60 mm/filemap.c:162
Code: 25 ff 0f 00 00 0f 84 f0 00 00 00 e8 ad fc ca ff e9 6c f9 ff ff e8 a3 fc ca ff 4c 89 ef 48 c7 c6 e0 84 d3 8b e8 c4 35 14 00 90 <0f> 0b e8 8c fc ca ff 4c 89 ef 48 c7 c6 80 85 d3 8b e8 ad 35 14 00
RSP: 0018:ffffc9000356f618 EFLAGS: 00010046
RAX: 54dbd74a8925c500 RBX: 0000000000000000 RCX: ffffc9000356f203
RDX: 0000000000000002 RSI: ffffffff8bcaca20 RDI: ffffffff8c1f7ee0
RBP: 0000000000000000 R08: ffffffff8fa8f96f R09: 1ffffffff1f51f2d
R10: dffffc0000000000 R11: fffffbfff1f51f2e R12: 1ffffd40002ffe18
R13: ffffea00017ff0c0 R14: 1ffffd40002ffe19 R15: ffffea00017ff0c8
FS:  0000000000000000(0000) GS:ffff8880b9500000(0063) knlGS:0000000057594400
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000031e22000 CR3: 000000002dfc2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	90                   	nop
  31:	90                   	nop
  32:	90                   	nop
  33:	90                   	nop
  34:	90                   	nop
  35:	90                   	nop
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop