Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f09b9ba6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f09bbbc5fa0 RCX: 00007f09bb94acb9
RDX: 0000200000000040 RSI: 00000000c028660f RDI: 0000000000000006
RBP: 00007f09b9ba6090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007f09bbbc6038 R14: 00007f09bbbc5fa0 R15: 00007fff9ca272b8
 </TASK>
------------[ cut here ]------------
kernel BUG at fs/ext4/extents.c:5683!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 6612 Comm: syz.0.114 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ext4_swap_extents+0x19d8/0x1a10 fs/ext4/extents.c:5683
Code: fe c1 38 c1 0f 8c 0a fe ff ff e8 23 9e b6 ff e9 00 fe ff ff e8 49 8c 53 ff 90 0f 0b e8 41 8c 53 ff 90 0f 0b e8 39 8c 53 ff 90 <0f> 0b e8 31 8c 53 ff 90 0f 0b e8 29 8c 53 ff 90 0f 0b e8 21 8c 53
RSP: 0018:ffffc9000ddbf2e0 EFLAGS: 00010293
RAX: ffffffff826dbcb7 RBX: 0000000080000000 RCX: ffff8880265a3c80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100b85c4ce R12: 0000000000000002
R13: 0000000000000000 R14: 000000000000001a R15: 0000000000000002
FS:  00007f09b9ba66c0(0000) GS:ffff8881269d9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f09bb998400 CR3: 000000002b4b0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 mext_move_extent fs/ext4/move_extent.c:396 [inline]
 ext4_move_extents+0x2d31/0x3900 fs/ext4/move_extent.c:616
 __ext4_ioctl fs/ext4/ioctl.c:1652 [inline]
 ext4_ioctl+0x3040/0x4af0 fs/ext4/ioctl.c:1917
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xff/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f09bb94acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f09b9ba6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f09bbbc5fa0 RCX: 00007f09bb94acb9
RDX: 0000200000000040 RSI: 00000000c028660f RDI: 0000000000000006
RBP: 00007f09b9ba6090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007f09bbbc6038 R14: 00007f09bbbc5fa0 R15: 00007fff9ca272b8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_swap_extents+0x19d8/0x1a10 fs/ext4/extents.c:5683
Code: fe c1 38 c1 0f 8c 0a fe ff ff e8 23 9e b6 ff e9 00 fe ff ff e8 49 8c 53 ff 90 0f 0b e8 41 8c 53 ff 90 0f 0b e8 39 8c 53 ff 90 <0f> 0b e8 31 8c 53 ff 90 0f 0b e8 29 8c 53 ff 90 0f 0b e8 21 8c 53
RSP: 0018:ffffc9000ddbf2e0 EFLAGS: 00010293
RAX: ffffffff826dbcb7 RBX: 0000000080000000 RCX: ffff8880265a3c80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100b85c4ce R12: 0000000000000002
R13: 0000000000000000 R14: 000000000000001a R15: 0000000000000002
FS:  00007f09b9ba66c0(0000) GS:ffff8881269d9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f79f31b8000 CR3: 000000002b4b0000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00
   c:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
* 2a:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax <-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 c7 c1 e8 ff ff ff 	mov    $0xffffffffffffffe8,%rcx
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W