bcachefs (loop4): done starting filesystem
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9318 at fs/bcachefs/fs-io.c:361 __bch2_truncate_folio+0x179c/0x1a30 fs/bcachefs/fs-io.c:361
Modules linked in:
CPU: 0 UID: 0 PID: 9318 Comm: syz.4.744 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__bch2_truncate_folio+0x179c/0x1a30 fs/bcachefs/fs-io.c:361
Code: 5f 5d e9 92 79 d0 fc cc e8 b1 e3 7f fd 48 c7 c7 e5 81 a3 8d e8 85 61 e9 ff 89 05 6f 16 86 15 e9 49 ea ff ff e8 95 e3 7f fd 90 <0f> 0b 90 e9 26 f9 ff ff e8 47 af 39 07 e8 82 e3 7f fd be 00 10 00
RSP: 0018:ffffc900030179e0 EFLAGS: 00010283
RAX: ffffffff843fc79b RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000d18e000 RSI: 000000000000107f RDI: 0000000000001080
RBP: ffffc90003017bb0 R08: ffffea0000b41f87 R09: 1ffffd40001683f0
R10: dffffc0000000000 R11: fffff940001683f1 R12: 1ffff1100a351b6e
R13: dffffc0000000000 R14: ffff888051a8db70 R15: 0000000000000000
FS:  00007fe4954406c0(0000) GS:ffff888125c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000046dda000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 bch2_truncate_folios fs/bcachefs/fs-io.c:400 [inline]
 bchfs_fpunch+0x10f/0x520 fs/bcachefs/fs-io.c:564
 bch2_fallocate_dispatch+0x2bc/0x410 fs/bcachefs/fs-io.c:838
 vfs_fallocate+0x669/0x7e0 fs/open.c:342
 ksys_fallocate fs/open.c:366 [inline]
 __do_sys_fallocate fs/open.c:371 [inline]
 __se_sys_fallocate fs/open.c:369 [inline]
 __x64_sys_fallocate+0xc0/0x110 fs/open.c:369
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe49458ebe9
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:00007fe495440038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fe4947b5fa0 RCX: 00007fe49458ebe9
RDX: 0000000000000004 RSI: 0000000000000003 RDI: 0000000000000004
RBP: 00007fe494611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000002328 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe4947b6038 R14: 00007fe4947b5fa0 R15: 00007ffcbf585ea8
 </TASK>