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truncate spotted in mem i_size < btree i_size: 10 < 1048576
WARNING: CPU: 0 PID: 5339 at fs/bcachefs/fs-io.c:457 bchfs_truncate+0xbb5/0xc80 fs/bcachefs/fs-io.c:454
Modules linked in:
CPU: 0 UID: 0 PID: 5339 Comm: syz.0.0 Not tainted 6.14.0-rc6-syzkaller-00007-g0b46b049d6ec #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:bchfs_truncate+0xbb5/0xc80 fs/bcachefs/fs-io.c:454
Code: 8b 4c 24 68 80 3c 01 00 74 08 4c 89 e7 e8 23 9c c1 fd 48 8b 94 24 20 01 00 00 48 c7 c7 80 94 73 8c 48 89 de e8 fc 12 1a fd 90 <0f> 0b 90 90 49 be 00 00 00 00 00 fc ff df e9 d5 f9 ff ff e8 33 56
RSP: 0018:ffffc9000d497940 EFLAGS: 00010246
RAX: 3e43713eac1a5200 RBX: 000000000000000a RCX: ffff88801af4c880
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000d497bb8 R08: ffffffff81819e52 R09: 1ffff11003f8519a
R10: dffffc0000000000 R11: ffffed1003f8519b R12: ffffc9000d497a60
R13: 1ffff1100a5d7b6e R14: dffffc0000000000 R15: 0000000000100000
FS:  00007fcbf5ff56c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562bb126c108 CR3: 0000000043126000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 notify_change+0xbca/0xe90 fs/attr.c:552
 do_truncate+0x220/0x310 fs/open.c:65
 vfs_truncate+0x492/0x530 fs/open.c:115
 do_sys_truncate+0xdb/0x190 fs/open.c:138
 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: 0033:0x7fcbf9b8d169
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:00007fcbf5ff5038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007fcbf9da6160 RCX: 00007fcbf9b8d169
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000400000000280
RBP: 00007fcbf9c0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fcbf9da6160 R15: 00007ffd9cee88d8
 </TASK>