rw journal devs:
bcachefs (loop7): Fixed errors, running fsck a second time to verify fs is clean
bcachefs (loop7): done starting filesystem
------------[ cut here ]------------
WARNING: CPU: 1 PID: 7980 at fs/bcachefs/fs-io.c:361 __bch2_truncate_folio+0x179c/0x1a30
Modules linked in:
CPU: 1 UID: 0 PID: 7980 Comm: syz.7.248 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__bch2_truncate_folio+0x179c/0x1a30
Code: 5f 5d e9 d7 b3 3c 07 cc e8 41 d4 7f fd 48 c7 c7 2e 8e a3 8d e8 85 61 e9 ff 89 05 df 06 86 15 e9 49 ea ff ff e8 25 d4 7f fd 90 <0f> 0b 90 e9 26 f9 ff ff e8 77 cf 39 07 e8 12 d4 7f fd be 00 10 00
RSP: 0018:ffffc900031af9e0 EFLAGS: 00010293
RAX: ffffffff843fd76b RBX: 0000000000000000 RCX: ffff88802388b980
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900031afbb0 R08: ffffea0004ac17c7 R09: 1ffffd40009582f8
R10: dffffc0000000000 R11: fffff940009582f9 R12: 1ffff11020bd7a7b
R13: dffffc0000000000 R14: ffff888105ebd3d8 R15: 0000000000000000
FS:  00007f85e99c56c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000f000 CR3: 000000003a2d0000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 bchfs_fallocate+0x233/0x680
 bch2_fallocate_dispatch+0x28a/0x410
 vfs_fallocate+0x669/0x7e0
 __x64_sys_fallocate+0xc0/0x110
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f85e8b8ebe9
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:00007f85e99c5038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f85e8db5fa0 RCX: 00007f85e8b8ebe9
RDX: 0000000000000002 RSI: 0000000000000010 RDI: 0000000000000005
RBP: 00007f85e8c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000007fff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f85e8db6038 R14: 00007f85e8db5fa0 R15: 00007ffca7eea3b8
 </TASK>
