ksys_mmap_pgoff+0x7d/0x5c0 mm/mmap.c:607
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline]
 __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 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: 2 UID: 0 PID: 6496 Comm: syz.1.166 Not tainted 6.14.0-rc2-syzkaller-00185-g128c8f96eb86 #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 80 8c 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:ffffc900055775d0 EFLAGS: 00010093
RAX: 0000000000000000 RBX: ffffea0000cdc280 RCX: ffffc90005577478
RDX: ffff88801ffb4880 RSI: ffffffff81ef9e0e RDI: ffff88801ffb4cc4
RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff20c4862
R10: ffffffff90624317 R11: 0000000000000003 R12: ffff888012bc83a0
R13: ffffea0000cdc2b0 R14: 0000000000000000 R15: ffffc90005577838
FS:  0000000000000000(0000) GS:ffff88806a800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000000030 CR3: 000000000df80000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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
 __do_sys_exit_group kernel/exit.c:1098 [inline]
 __se_sys_exit_group kernel/exit.c:1096 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1096
 x64_sys_call+0x151f/0x1720 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f573658cde9
Code: Unable to access opcode bytes at 0x7f573658cdbf.
RSP: 002b:00007ffef2d57618 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f573658cde9
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffef2d5767c R08: 0000001ef2d5770f R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000000ee91 R15: 00007ffef2d576d0
 </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 80 8c 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:ffffc900055775d0 EFLAGS: 00010093
RAX: 0000000000000000 RBX: ffffea0000cdc280 RCX: ffffc90005577478
RDX: ffff88801ffb4880 RSI: ffffffff81ef9e0e RDI: ffff88801ffb4cc4
RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff20c4862
R10: ffffffff90624317 R11: 0000000000000003 R12: ffff888012bc83a0
R13: ffffea0000cdc2b0 R14: 0000000000000000 R15: ffffc90005577838
FS:  0000000000000000(0000) GS:ffff88806a800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000000030 CR3: 000000000df80000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400