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kernel BUG at fs/bcachefs/fs.c:1327!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5342 Comm: syz.0.0 Not tainted 6.15.0-rc6-syzkaller-00300-g205b2bd7939c #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_fill_extent+0x96e/0x970 fs/bcachefs/fs.c:1327
Code: 0f 0b e8 25 57 8d fd 90 0f 0b e8 1d 57 8d fd e9 f7 fe ff ff e8 13 57 8d fd 90 0f 0b e8 0b 57 8d fd 90 0f 0b e8 03 57 8d fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa
RSP: 0018:ffffc9000d2f7420 EFLAGS: 00010293
RAX: ffffffff84329aed RBX: 0000000000000007 RCX: ffff88801c24c880
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000007
RBP: 0000000000000001 R08: ffff88801c24c880 R09: 0000000000000004
R10: 0000000000000012 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc9000d2f78a8 R14: 0000000000000002 R15: 0000000000000002
FS:  00007f1d2b3b16c0(0000) GS:ffff88808d6c2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000008580 CR3: 0000000040660000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_fiemap+0x288e/0x2ab0 fs/bcachefs/fs.c:1542
 ioctl_fiemap fs/ioctl.c:220 [inline]
 do_vfs_ioctl+0x163b/0x1eb0 fs/ioctl.c:840
 __do_sys_ioctl fs/ioctl.c:904 [inline]
 __se_sys_ioctl+0x82/0x170 fs/ioctl.c:892
 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: 0033:0x7f1d2a58e969
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:00007f1d2b3b1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1d2a7b6080 RCX: 00007f1d2a58e969
RDX: 0000200000000340 RSI: 00000000c020660b RDI: 0000000000000007
RBP: 00007f1d2a610ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1d2a7b6080 R15: 00007ffd4b08e9f8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bch2_fill_extent+0x96e/0x970 fs/bcachefs/fs.c:1327
Code: 0f 0b e8 25 57 8d fd 90 0f 0b e8 1d 57 8d fd e9 f7 fe ff ff e8 13 57 8d fd 90 0f 0b e8 0b 57 8d fd 90 0f 0b e8 03 57 8d fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa
RSP: 0018:ffffc9000d2f7420 EFLAGS: 00010293
RAX: ffffffff84329aed RBX: 0000000000000007 RCX: ffff88801c24c880
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000007
RBP: 0000000000000001 R08: ffff88801c24c880 R09: 0000000000000004
R10: 0000000000000012 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc9000d2f78a8 R14: 0000000000000002 R15: 0000000000000002
FS:  00007f1d2b3b16c0(0000) GS:ffff88808d6c2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd4b08de80 CR3: 0000000040660000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400