------------[ cut here ]------------
WARNING: CPU: 0 PID: 6079 at fs/bcachefs/fs-io.c:344 __bch2_truncate_folio+0x2299/0x26a0 fs/bcachefs/fs-io.c:344
Modules linked in:
CPU: 0 UID: 0 PID: 6079 Comm: syz.0.24 Not tainted 6.14.0-rc4-syzkaller-00248-g03d38806a902 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__bch2_truncate_folio+0x2299/0x26a0 fs/bcachefs/fs-io.c:344
Code: 41 5f 5d c3 cc cc cc cc e8 b4 6f 5c fd 48 c7 c7 18 43 36 8e e8 38 00 e7 ff 89 05 42 9e 16 16 e9 3d e0 ff ff e8 98 6f 5c fd 90 <0f> 0b 90 e9 88 f8 ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c ff
RSP: 0018:ffffc9000b6c78a0 EFLAGS: 00010287
RAX: ffffffff84654f28 RBX: 0000000000002000 RCX: 0000000000080000
RDX: ffffc9000d78d000 RSI: 0000000000001777 RDI: 0000000000001778
RBP: ffffc9000b6c7b90 R08: ffffffff846547ab R09: 1ffffd40003eeaf0
R10: dffffc0000000000 R11: fffff940003eeaf1 R12: 1ffff1100b2a11f0
R13: ffffc9000b6c7b20 R14: ffff888059508f80 R15: 0000000000000a00
FS:  00007fcaaedff6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1486d705a0 CR3: 0000000034fc0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_truncate_folios fs/bcachefs/fs-io.c:388 [inline]
 bchfs_fpunch+0x15e/0x780 fs/bcachefs/fs-io.c:538
 bch2_fallocate_dispatch+0x3e4/0x540 fs/bcachefs/fs-io.c:812
 vfs_fallocate+0x623/0x7a0 fs/open.c:338
 ksys_fallocate fs/open.c:362 [inline]
 __do_sys_fallocate fs/open.c:367 [inline]
 __se_sys_fallocate fs/open.c:365 [inline]
 __x64_sys_fallocate+0xbc/0x110 fs/open.c:365
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcaadf8d169
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:00007fcaaedff038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fcaae1a6080 RCX: 00007fcaadf8d169
RDX: 0000000000000009 RSI: 0000000000000003 RDI: 0000000000000008
RBP: 00007fcaae00e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000002328 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fcaae1a6080 R15: 00007fff023b7418
 </TASK>