tlb_batch_pages_flush mm/mmu_gather.c:49 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:242 [inline]
 tlb_flush_mmu mm/mmu_gather.c:249 [inline]
 tlb_finish_mmu+0x165/0x8c0 mm/mmu_gather.c:340
 unmap_region+0x27f/0x350 mm/mmap.c:2653
 __do_munmap+0x627/0x11c0 mm/mmap.c:2884
 do_munmap mm/mmap.c:2895 [inline]
 munmap_vma_range mm/mmap.c:603 [inline]
 mmap_region+0x2fd/0x1650 mm/mmap.c:1742
 do_mmap+0x869/0xfb0 mm/mmap.c:1575
 vm_mmap_pgoff+0x1b7/0x290 mm/util.c:519
 ksys_mmap_pgoff+0x49f/0x620 mm/mmap.c:1624
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
------------[ cut here ]------------
kernel BUG at mm/filemap.c:2096!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 28017 Comm: syz-executor.1 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:find_lock_entries+0xcd9/0x13d0 mm/filemap.c:2096
Code: f6 ff ff e8 49 f9 d9 ff 4c 8b 7c 24 30 49 83 ef 01 e9 07 f7 ff ff e8 36 f9 d9 ff 48 c7 c6 20 ec 94 89 48 89 ef e8 67 8f 0d 00 <0f> 0b e8 20 f9 d9 ff 48 c7 c6 20 e2 94 89 48 89 ef e8 51 8f 0d 00
RSP: 0018:ffffc900045c79a0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: dffffc0000000000 RCX: ffffc9000b21b000
RDX: 0000000000040000 RSI: ffffffff819b4b09 RDI: 0000000000000003
RBP: ffffea0002960000 R08: 0000000000000029 R09: 00000000ffffffff
R10: ffffffff88f46833 R11: 00000000ffffffff R12: ffffea0002960008
R13: 0000000000000200 R14: ffffea0002960020 R15: 0000000000000240
FS:  00007fb3d9448700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f151cd88000 CR3: 0000000075c52000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 shmem_undo_range+0x1dd/0x1730 mm/shmem.c:938
 shmem_truncate_range mm/shmem.c:1058 [inline]
 shmem_setattr+0x59f/0x8f0 mm/shmem.c:1117
 notify_change+0xaef/0x10c0 fs/attr.c:410
 do_truncate+0x13c/0x200 fs/open.c:64
 do_sys_ftruncate+0x544/0x740 fs/open.c:192
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb3d9448188 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000006
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffedd1eeaff R14: 00007fb3d9448300 R15: 0000000000022000
Modules linked in:
---[ end trace 46d78e4afa455daf ]---
RIP: 0010:find_lock_entries+0xcd9/0x13d0 mm/filemap.c:2096
Code: f6 ff ff e8 49 f9 d9 ff 4c 8b 7c 24 30 49 83 ef 01 e9 07 f7 ff ff e8 36 f9 d9 ff 48 c7 c6 20 ec 94 89 48 89 ef e8 67 8f 0d 00 <0f> 0b e8 20 f9 d9 ff 48 c7 c6 20 e2 94 89 48 89 ef e8 51 8f 0d 00
RSP: 0018:ffffc900045c79a0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: dffffc0000000000 RCX: ffffc9000b21b000
RDX: 0000000000040000 RSI: ffffffff819b4b09 RDI: 0000000000000003
RBP: ffffea0002960000 R08: 0000000000000029 R09: 00000000ffffffff
R10: ffffffff88f46833 R11: 00000000ffffffff R12: ffffea0002960008
R13: 0000000000000200 R14: ffffea0002960020 R15: 0000000000000240
FS:  00007fb3d9448700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f92e319e718 CR3: 0000000075c52000 CR4: 00000000001526f0