ksys_ioctl+0x62/0x90 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x15/0x20 fs/ioctl.c:718
 do_syscall_64+0x4f/0x150 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
------------[ cut here ]------------
kernel BUG at mm/filemap.c:169!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 2654 Comm: syz-executor.0 Not tainted 4.20.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:unaccount_page_cache_page+0x224/0x350 mm/filemap.c:169
Code: 48 89 df e8 7e 59 04 00 0f 0b 48 c7 c6 18 32 89 82 48 89 df e8 6d 59 04 00 0f 0b 48 c7 c6 d8 3b 89 82 48 89 df e8 5c 59 04 00 <0f> 0b 0f 0b 8b 05 c6 9d cc 01 4d 8b 2c 24 85 c0 0f 85 b6 00 00 00
RSP: 0018:ffffc90000dc7ab0 EFLAGS: 00010086
RAX: 0000000000000000 RBX: ffffea0004b6f380 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8288ed9a RDI: 00000000ffffffff
RBP: ffffc90000dc7ac8 R08: 0000000000000000 R09: 00000000fc0bf177
R10: ffffffff82c5ee38 R11: ffff880130ad0870 R12: ffff8801365d87a0
R13: ffff8801365d87a0 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f33e1ae0480(0000) GS:ffff88013bb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f186f164b0 CR3: 00000001340f3000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __delete_from_page_cache+0x6f/0x300 mm/filemap.c:233
 delete_from_page_cache+0x5b/0xa0 mm/filemap.c:269
 truncate_inode_page+0x28/0x50 mm/truncate.c:227
 shmem_undo_range+0x4f6/0xb40 mm/shmem.c:838
 shmem_truncate_range+0xf/0x30 mm/shmem.c:966
 shmem_evict_inode+0xbf/0x1d0 mm/shmem.c:1066
 evict+0xcc/0x1a0 fs/inode.c:558
 iput_final fs/inode.c:1547 [inline]
 iput fs/inode.c:1573 [inline]
 iput+0x18b/0x260 fs/inode.c:1559
 dentry_unlink_inode+0xa8/0xe0 fs/dcache.c:360
 __dentry_kill+0xd8/0x170 fs/dcache.c:552
 dentry_kill+0x50/0x1b0 fs/dcache.c:671
 dput.part.5+0x186/0x1d0 fs/dcache.c:832
 dput+0x9/0x10 fs/dcache.c:814
 __fput+0xe4/0x1e0 fs/file_table.c:291
 ____fput+0x9/0x10 fs/file_table.c:309
 task_work_run+0x89/0xb0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0xa2/0xb0 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x13e/0x150 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f33e00479da
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24
RSP: 002b:00007fff77fd4420 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f33e00479da
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000032 R08: 0000001b2ff60000 R09: 00007f33e0167f8c
R10: 00007fff77fd4570 R11: 0000000000000293 R12: 00007f33dfbcc4d0
R13: ffffffffffffffff R14: 00007f33dfbcc000 R15: 0000000000009a36
Modules linked in:
---[ end trace c96d6adb029d48a4 ]---
RIP: 0010:unaccount_page_cache_page+0x224/0x350 mm/filemap.c:169
Code: 48 89 df e8 7e 59 04 00 0f 0b 48 c7 c6 18 32 89 82 48 89 df e8 6d 59 04 00 0f 0b 48 c7 c6 d8 3b 89 82 48 89 df e8 5c 59 04 00 <0f> 0b 0f 0b 8b 05 c6 9d cc 01 4d 8b 2c 24 85 c0 0f 85 b6 00 00 00
RSP: 0018:ffffc90000dc7ab0 EFLAGS: 00010086
RAX: 0000000000000000 RBX: ffffea0004b6f380 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8288ed9a RDI: 00000000ffffffff
RBP: ffffc90000dc7ac8 R08: 0000000000000000 R09: 00000000fc0bf177
R10: ffffffff82c5ee38 R11: ffff880130ad0870 R12: ffff8801365d87a0
R13: ffff8801365d87a0 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f33e1ae0480(0000) GS:ffff88013bb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f186f164b0 CR3: 00000001340f3000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400