------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2826!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 14893 Comm: syz.9.2316 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:ext4_do_writepages+0x465f/0x4670 fs/ext4/inode.c:2825
Code: c6 e0 4d e4 8b e8 31 e8 a0 fe 90 0f 0b e8 e9 9b 3e ff 4c 89 f7 48 c7 c6 c0 52 e4 8b e8 1a e8 a0 fe 90 0f 0b e8 d2 9b 3e ff 90 <0f> 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
RSP: 0018:ffffc90004c66e40 EFLAGS: 00010287
RAX: ffffffff828725fe RBX: 0000004210000000 RCX: 0000000000080000
RDX: ffffc90005d79000 RSI: 0000000000000420 RDI: 0000000000000421
RBP: ffffc90004c67250 R08: ffff8880345909b7 R09: 1ffff110068b2136
R10: dffffc0000000000 R11: ffffed10068b2137 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000004000000000 R15: 1ffff110083850c5
FS:  00007f89b24336c0(0000) GS:ffff88812528d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f98532177e8 CR3: 000000008b6ed000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ext4_writepages+0x241/0x3b0 fs/ext4/inode.c:3042
 do_writepages+0x32e/0x550 mm/page-writeback.c:2571
 filemap_writeback mm/filemap.c:388 [inline]
 filemap_flush_range mm/filemap.c:437 [inline]
 filemap_flush+0x1e1/0x2e0 mm/filemap.c:452
 __ext4_ioctl fs/ext4/ioctl.c:1708 [inline]
 ext4_ioctl+0x239e/0x4b30 fs/ext4/ioctl.c:1922
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f89b159ce59
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:00007f89b2433028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f89b1816090 RCX: 00007f89b159ce59
RDX: 0000000000000000 RSI: 000000000000660c RDI: 0000000000000005
RBP: 00007f89b1632d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f89b1816128 R14: 00007f89b1816090 R15: 00007ffd1f5f8438
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x465f/0x4670 fs/ext4/inode.c:2825
Code: c6 e0 4d e4 8b e8 31 e8 a0 fe 90 0f 0b e8 e9 9b 3e ff 4c 89 f7 48 c7 c6 c0 52 e4 8b e8 1a e8 a0 fe 90 0f 0b e8 d2 9b 3e ff 90 <0f> 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
RSP: 0018:ffffc90004c66e40 EFLAGS: 00010287
RAX: ffffffff828725fe RBX: 0000004210000000 RCX: 0000000000080000
RDX: ffffc90005d79000 RSI: 0000000000000420 RDI: 0000000000000421
RBP: ffffc90004c67250 R08: ffff8880345909b7 R09: 1ffff110068b2136
R10: dffffc0000000000 R11: ffffed10068b2137 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000004000000000 R15: 1ffff110083850c5
FS:  00007f89b24336c0(0000) GS:ffff88812538d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fae20147e9c CR3: 000000008b6ed000 CR4: 0000000000350ef0