__mmput+0x112/0x3b0 kernel/fork.c:1127
 exit_mm+0x688/0x7f0 kernel/exit.c:550
 do_exit+0x626/0x2480 kernel/exit.c:861
 do_group_exit+0x144/0x310 kernel/exit.c:996
 __do_sys_exit_group kernel/exit.c:1007 [inline]
 __se_sys_exit_group kernel/exit.c:1005 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
------------[ cut here ]------------
kernel BUG at mm/filemap.c:166!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5031 Comm: syz.3.268 Not tainted 5.15.175-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:unaccount_page_cache_page+0x79d/0x8b0 mm/filemap.c:166
Code: e8 48 75 d8 ff 4c 89 f7 48 c7 c6 c0 15 b3 8a e8 69 cb 0e 00 0f 0b e8 32 75 d8 ff 4c 89 f7 48 c7 c6 00 16 b3 8a e8 53 cb 0e 00 <0f> 0b 48 85 ed 75 62 e8 17 75 d8 ff 4c 89 eb eb 60 e8 0d 75 d8 ff
RSP: 0018:ffffc900013ff610 EFLAGS: 00010046
RAX: 8e0f139ac9502d00 RBX: 0000000000000000 RCX: ffff888023ba3b80
RDX: 0000000000000000 RSI: 000000000000ffff RDI: 000000000000ffff
RBP: 0000000000000000 R08: ffffffff81d123a4 R09: ffffed10171e4f24
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffd400038d801
R13: ffffea0001c6c008 R14: ffffea0001c6c000 R15: dffffc0000000000
FS:  0000555568192500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000080 CR3: 000000002355e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __delete_from_page_cache+0xd1/0x860 mm/filemap.c:231
 delete_from_page_cache+0x126/0x190 mm/filemap.c:266
 truncate_inode_page+0x8d/0xb0 mm/truncate.c:219
 shmem_undo_range+0x535/0x1b50 mm/shmem.c:960
 shmem_truncate_range mm/shmem.c:1063 [inline]
 shmem_evict_inode+0x21b/0xa00 mm/shmem.c:1145
 evict+0x529/0x930 fs/inode.c:622
 __dentry_kill+0x436/0x650 fs/dcache.c:586
 dentry_kill+0xbb/0x290
 dput+0xd8/0x1a0 fs/dcache.c:893
 __fput+0x636/0x8e0 fs/file_table.c:288
 task_work_run+0x129/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f925928cd29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffe8f718b78 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 000000000001bcb6 RCX: 00007f925928cd29
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f925947eba0 R08: 0000000000000001 R09: 00007ffe8f718e6f
R10: 00007f9259107000 R11: 0000000000000246 R12: 000000000001bceb
R13: 00007f925947cfa0 R14: 0000000000000032 R15: ffffffffffffffff
 </TASK>
Modules linked in:
---[ end trace 92701e1fca786390 ]---
RIP: 0010:unaccount_page_cache_page+0x79d/0x8b0 mm/filemap.c:166
Code: e8 48 75 d8 ff 4c 89 f7 48 c7 c6 c0 15 b3 8a e8 69 cb 0e 00 0f 0b e8 32 75 d8 ff 4c 89 f7 48 c7 c6 00 16 b3 8a e8 53 cb 0e 00 <0f> 0b 48 85 ed 75 62 e8 17 75 d8 ff 4c 89 eb eb 60 e8 0d 75 d8 ff
RSP: 0018:ffffc900013ff610 EFLAGS: 00010046
RAX: 8e0f139ac9502d00 RBX: 0000000000000000 RCX: ffff888023ba3b80
RDX: 0000000000000000 RSI: 000000000000ffff RDI: 000000000000ffff
RBP: 0000000000000000 R08: ffffffff81d123a4 R09: ffffed10171e4f24
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffd400038d801
R13: ffffea0001c6c008 R14: ffffea0001c6c000 R15: dffffc0000000000
FS:  0000555568192500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000080 CR3: 000000002355e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400