------------[ cut here ]------------
kernel BUG at fs/bcachefs/quota.c:232!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5313 Comm: syz.0.0 Not tainted 6.15.0-rc5-syzkaller-00032-g0d8d44db295c #0 PREEMPT(full) 
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_quota_check_limit+0xd64/0xd90 fs/bcachefs/quota.c:232
Code: de fd e9 19 fb ff ff 48 8b 0c 24 80 e1 07 38 c1 0f 8c 1a fb ff ff 48 8b 3c 24 e8 c7 00 de fd e9 0c fb ff ff e8 bd 0c 7c fd 90 <0f> 0b e8 b5 0c 7c fd 90 0f 0b e8 ad 0c 7c fd 90 0f 0b e8 a5 0c 7c
RSP: 0018:ffffc9000d69f5f8 EFLAGS: 00010283
RAX: ffffffff8443c393 RBX: ffffc9000d69f720 RCX: 0000000000100000
RDX: ffffc9000f121000 RSI: 000000000001eee5 RDI: 000000000001eee6
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffffffffffe8
R10: dffffc0000000000 R11: fffffbfff1efdb2f R12: ffffffffffffffe8
R13: ffffffffffffffe8 R14: 0000000000000000 R15: ffff88801e055c00
FS:  00007fcd79c3c6c0(0000) GS:ffff88808d6cb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcd79c3bfc8 CR3: 00000000341c4000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_quota_acct+0x3ed/0x750 fs/bcachefs/quota.c:299
 __bch2_i_sectors_acct+0x2b9/0x4d0 fs/bcachefs/fs-io.c:178
 bch2_i_sectors_acct fs/bcachefs/fs-io.h:138 [inline]
 bchfs_truncate+0x7ff/0xcc0 fs/bcachefs/fs-io.c:510
 notify_change+0xb33/0xe40 fs/attr.c:552
 do_truncate+0x19a/0x220 fs/open.c:65
 vfs_truncate+0x493/0x520 fs/open.c:115
 do_sys_truncate+0xdb/0x190 fs/open.c:138
 __do_sys_truncate fs/open.c:150 [inline]
 __se_sys_truncate fs/open.c:148 [inline]
 __x64_sys_truncate+0x5b/0x70 fs/open.c:148
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcd78d8e969
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:00007fcd79c3c038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007fcd78fb6080 RCX: 00007fcd78d8e969
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000000
RBP: 00007fcd78e10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fcd78fb6080 R15: 00007ffd28589508
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bch2_quota_check_limit+0xd64/0xd90 fs/bcachefs/quota.c:232
Code: de fd e9 19 fb ff ff 48 8b 0c 24 80 e1 07 38 c1 0f 8c 1a fb ff ff 48 8b 3c 24 e8 c7 00 de fd e9 0c fb ff ff e8 bd 0c 7c fd 90 <0f> 0b e8 b5 0c 7c fd 90 0f 0b e8 ad 0c 7c fd 90 0f 0b e8 a5 0c 7c
RSP: 0018:ffffc9000d69f5f8 EFLAGS: 00010283
RAX: ffffffff8443c393 RBX: ffffc9000d69f720 RCX: 0000000000100000
RDX: ffffc9000f121000 RSI: 000000000001eee5 RDI: 000000000001eee6
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffffffffffe8
R10: dffffc0000000000 R11: fffffbfff1efdb2f R12: ffffffffffffffe8
R13: ffffffffffffffe8 R14: 0000000000000000 R15: ffff88801e055c00
FS:  00007fcd79c3c6c0(0000) GS:ffff88808d6cb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcd79c3bfc8 CR3: 00000000341c4000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400