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truncate spotted in mem i_size < btree i_size: 10 < 1048576
WARNING: CPU: 1 PID: 7170 at fs/bcachefs/fs-io.c:428 bchfs_truncate+0xbca/0xc90 fs/bcachefs/fs-io.c:425
Modules linked in:
CPU: 1 UID: 0 PID: 7170 Comm: syz.6.366 Not tainted 6.12.0-syzkaller-10296-gaaf20f870da0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:bchfs_truncate+0xbca/0xc90 fs/bcachefs/fs-io.c:425
Code: fc ff df 41 80 3c 06 00 74 08 48 89 df e8 be 45 cb fd 48 8b 94 24 20 01 00 00 48 c7 c7 c0 ec 53 8c 4c 89 fe e8 97 07 21 fd 90 <0f> 0b 90 90 e9 cf f9 ff ff e8 88 5e 60 fd 48 8b 5c 24 60 48 89 df
RSP: 0018:ffffc900048ef9c0 EFLAGS: 00010246
RAX: 0efca42961804900 RBX: ffffc900048efae0 RCX: 0000000000080000
RDX: ffffc9000cf7a000 RSI: 0000000000006a89 RDI: 0000000000006a8a
RBP: ffffc900048efc38 R08: ffffffff815688b2 R09: fffffbfff1cfa8a0
R10: dffffc0000000000 R11: fffffbfff1cfa8a0 R12: 1ffff1100b191363
R13: ffff888058c896d0 R14: 1ffff9200091df5c R15: 000000000000000a
FS:  00007f48a1c0c6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbf189c3fb8 CR3: 00000000212e6000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 notify_change+0xbcc/0xe90 fs/attr.c:552
 do_truncate+0x220/0x310 fs/open.c:65
 vfs_truncate+0x2e1/0x3b0 fs/open.c:111
 do_sys_truncate+0xdb/0x190 fs/open.c:134
 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: 0033:0x7f48a0d80809
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:00007f48a1c0c058 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007f48a0f46080 RCX: 00007f48a0d80809
RDX: 0000000000000000 RSI: 0000000000007fff RDI: 0000000020000040
RBP: 00007f48a0df393e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f48a0f46080 R15: 00007fffa1fbe598
 </TASK>