------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2809!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 8503 Comm: syz.8.240 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:ext4_do_writepages+0x45f0/0x4600 fs/ext4/inode.c:2808
Code: c6 a0 30 fe 8a e8 50 a1 ba fe 90 0f 0b e8 78 14 52 ff 4c 89 f7 48 c7 c6 80 34 fe 8a e8 39 a1 ba fe 90 0f 0b e8 61 14 52 ff 90 <0f> 0b 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
RSP: 0018:ffffc9000dc1ee20 EFLAGS: 00010293
RAX: ffffffff826cf8af RBX: 0000004210000000 RCX: ffff88802ee01e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000dc1f250 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1007a4fa68 R12: 0000000000000001
R13: ffffc9000dc1f2a0 R14: 0000004000000000 R15: dffffc0000000000
FS:  00007fd5948e56c0(0000) GS:ffff888126bc2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd5948e4f98 CR3: 0000000054172000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ext4_writepages+0x205/0x350 fs/ext4/inode.c:3025
 do_writepages+0x32e/0x550 mm/page-writeback.c:2604
 filemap_fdatawrite_wbc mm/filemap.c:389 [inline]
 __filemap_fdatawrite_range mm/filemap.c:422 [inline]
 __filemap_fdatawrite mm/filemap.c:428 [inline]
 filemap_flush+0x194/0x230 mm/filemap.c:473
 __ext4_ioctl fs/ext4/ioctl.c:1709 [inline]
 ext4_ioctl+0x20a3/0x48f0 fs/ext4/ioctl.c:1923
 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+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd59669efc9
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:00007fd5948e5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd5968f6090 RCX: 00007fd59669efc9
RDX: 0000000000000000 RSI: 000000000000660c RDI: 0000000000000004
RBP: 00007fd5948e5090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fd5968f6128 R14: 00007fd5968f6090 R15: 00007ffcd8980bc8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x45f0/0x4600 fs/ext4/inode.c:2808
Code: c6 a0 30 fe 8a e8 50 a1 ba fe 90 0f 0b e8 78 14 52 ff 4c 89 f7 48 c7 c6 80 34 fe 8a e8 39 a1 ba fe 90 0f 0b e8 61 14 52 ff 90 <0f> 0b 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
RSP: 0018:ffffc9000dc1ee20 EFLAGS: 00010293
RAX: ffffffff826cf8af RBX: 0000004210000000 RCX: ffff88802ee01e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000dc1f250 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1007a4fa68 R12: 0000000000000001
R13: ffffc9000dc1f2a0 R14: 0000004000000000 R15: dffffc0000000000
FS:  00007fd5948e56c0(0000) GS:ffff888126bc2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd5948e4f98 CR3: 0000000054172000 CR4: 00000000003526f0