RBP: 00007f8e7d29b1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffe74f1ad4f R14: 00007f8e7d29b300 R15: 0000000000022000
 </TASK>
------------[ cut here ]------------
kernel BUG at fs/ext4/extents.c:5683!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 13003 Comm: syz-executor.4 Not tainted 6.18.0-rc7-next-20251128 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:ext4_swap_extents+0x9ce/0x1550
Code: 00 00 00 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 15 0a 00 00 48 8b 84 24 c8 00 00 00 89 18 e9 ff fc ff ff e8 93 71 8c ff 90 <0f> 0b e8 8b 71 8c ff 90 0f 0b e8 83 71 8c ff 48 8b 44 24 58 48 c1
RSP: 0018:ffff888052c478f8 EFLAGS: 00010212
RAX: 00000000000297e1 RBX: 0000000000000000 RCX: ffffc90001825000
RDX: 0000000000040000 RSI: ffffffff81e900bd RDI: 0000000000000007
RBP: ffff88801fa70b88 R08: 0000000000000000 R09: ffffed1003f4e171
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000009
R13: 00000000fffffff4 R14: ffffea00012a4bc0 R15: 0000000000000002
FS:  00007f8e7d29b700(0000) GS:ffff8880e5468000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f205db7a3a4 CR3: 00000000506ed000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ext4_move_extents+0x3197/0x3790
 __ext4_ioctl+0x118f/0x38e0
 __x64_sys_ioctl+0x18f/0x210
 do_syscall_64+0xbf/0x420
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8e7fd25b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8e7d29b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8e7fe38f60 RCX: 00007f8e7fd25b19
RDX: 00000000200000c0 RSI: 00000000c028660f RDI: 0000000000000003
RBP: 00007f8e7d29b1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffe74f1ad4f R14: 00007f8e7d29b300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_swap_extents+0x9ce/0x1550
Code: 00 00 00 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 15 0a 00 00 48 8b 84 24 c8 00 00 00 89 18 e9 ff fc ff ff e8 93 71 8c ff 90 <0f> 0b e8 8b 71 8c ff 90 0f 0b e8 83 71 8c ff 48 8b 44 24 58 48 c1
RSP: 0018:ffff888052c478f8 EFLAGS: 00010212
RAX: 00000000000297e1 RBX: 0000000000000000 RCX: ffffc90001825000
RDX: 0000000000040000 RSI: ffffffff81e900bd RDI: 0000000000000007
RBP: ffff88801fa70b88 R08: 0000000000000000 R09: ffffed1003f4e171
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000009
R13: 00000000fffffff4 R14: ffffea00012a4bc0 R15: 0000000000000002
FS:  00007f8e7d29b700(0000) GS:ffff8880e5468000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f205db7a3a4 CR3: 00000000506ed000 CR4: 0000000000350ef0