------------[ cut here ]------------
WARNING: CPU: 1 PID: 17146 at fs/bcachefs/fs-io.c:327 __bch2_truncate_folio+0x1064/0x1220 fs/bcachefs/fs-io.c:327
Modules linked in:
CPU: 1 PID: 17146 Comm: syz-executor.2 Not tainted 6.9.0-syzkaller-10323-g8f6a15f095a6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:__bch2_truncate_folio+0x1064/0x1220 fs/bcachefs/fs-io.c:327
Code: e8 91 4b 8b fd 90 0f 0b e8 f9 31 e7 fd e9 80 f5 ff ff e8 1f 32 e7 fd e9 da f4 ff ff e8 75 4b 8b fd 90 0f 0b e8 6d 4b 8b fd 90 <0f> 0b 90 e9 33 f7 ff ff e8 5f 4b 8b fd 90 0f 0b e8 97 31 e7 fd e9
RSP: 0018:ffffc9000307fc58 EFLAGS: 00010283
RAX: 000000000000d11f RBX: ffffea0000da3980 RCX: ffffc9000f3cd000
RDX: 0000000000040000 RSI: ffffffff8402a0e3 RDI: 0000000000000006
RBP: ffffc9000307fd50 R08: 0000000000000006 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000002 R12: ffff88814965bf00
R13: ffff88805a6267b0 R14: 0000000000000000 R15: ffff88805a626800
FS:  00007f43ae4506c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2cd2a000 CR3: 000000006230c000 CR4: 00000000003506f0
DR0: 0000000000005000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_truncate_folios+0x30/0xa0 fs/bcachefs/fs-io.c:366
 bchfs_fpunch fs/bcachefs/fs-io.c:520 [inline]
 bch2_fallocate_dispatch+0xa33/0xf70 fs/bcachefs/fs-io.c:785
 vfs_fallocate+0x4b8/0xfb0 fs/open.c:330
 ksys_fallocate fs/open.c:353 [inline]
 __do_sys_fallocate fs/open.c:361 [inline]
 __se_sys_fallocate fs/open.c:359 [inline]
 __x64_sys_fallocate+0xd5/0x140 fs/open.c:359
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f43ad67cee9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f43ae4500c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f43ad7abf80 RCX: 00007f43ad67cee9
RDX: 0000000000000002 RSI: 0000000000000003 RDI: 0000000000000005
RBP: 00007f43ad6c949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f43ad7abf80 R15: 00007ffe1377a3a8
 </TASK>