------------[ cut here ]------------
WARNING: CPU: 0 PID: 5321 at fs/bcachefs/fs-io.c:315 __bch2_truncate_folio+0x22aa/0x26b0 fs/bcachefs/fs-io.c:315
Modules linked in:
CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted 6.13.0-rc6-syzkaller-00262-gb62cef9a5c67 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__bch2_truncate_folio+0x22aa/0x26b0 fs/bcachefs/fs-io.c:315
Code: 41 5f 5d c3 cc cc cc cc e8 63 b2 67 fd 48 c7 c7 b2 60 11 8e e8 17 8b e8 ff 89 05 e1 44 1d 16 e9 2c e0 ff ff e8 47 b2 67 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:ffffc9000d4b7900 EFLAGS: 00010283
RAX: ffffffff8437cfe9 RBX: 0000000000002000 RCX: 0000000000100000
RDX: ffffc9000ee83000 RSI: 00000000000012e4 RDI: 00000000000012e5
RBP: ffffc9000d4b7bf0 R08: ffffffff8437c86c R09: 1ffffd40001fe4c8
R10: dffffc0000000000 R11: fffff940001fe4c9 R12: 1ffff1100887e2da
R13: ffffc9000d4b7b80 R14: ffff8880443f16d0 R15: 00000000000000f5
FS:  00007fdfcb9da6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055642457d318 CR3: 0000000043e58000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_truncate_folios fs/bcachefs/fs-io.c:359 [inline]
 bchfs_fpunch+0x15e/0x780 fs/bcachefs/fs-io.c:508
 bch2_fallocate_dispatch+0x3e4/0x540 fs/bcachefs/fs-io.c:782
 vfs_fallocate+0x569/0x6e0 fs/open.c:327
 ksys_fallocate fs/open.c:351 [inline]
 __do_sys_fallocate fs/open.c:356 [inline]
 __se_sys_fallocate fs/open.c:354 [inline]
 __x64_sys_fallocate+0xbc/0x110 fs/open.c:354
 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: 0033:0x7fdfcab85d29
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:00007fdfcb9da038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fdfcad76080 RCX: 00007fdfcab85d29
RDX: 0000000000000011 RSI: 0000000000000003 RDI: 0000000000000006
RBP: 00007fdfcac01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000002328 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fdfcad76080 R15: 00007ffee8a331b8
 </TASK>