------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2762!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4487 Comm: kworker/u4:14 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: writeback wb_workfn (flush-7:7)
RIP: 0010:ext4_writepages+0x2e5f/0x2e70 fs/ext4/inode.c:2761
Code: c1 03 38 c1 0f 8c b2 fd ff ff 4c 89 e7 e8 49 92 ac ff e9 a5 fd ff ff e8 8f 65 5b ff 0f 0b e8 88 65 5b ff 0f 0b e8 81 65 5b ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 41 57 41 56 41
RSP: 0018:ffffc90004d5f040 EFLAGS: 00010293
RAX: ffffffff8226c89f RBX: 000000c41000c000 RCX: ffff88802bb3da00
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc90004d5f3b0 R08: ffff8880726d0a5f R09: 1ffff1100e4da14b
R10: dffffc0000000000 R11: ffffed100e4da14c R12: dffffc0000000000
R13: 0000000000000001 R14: 0000008000000000 R15: 1ffff920009abe34
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffce0768c50 CR3: 00000000663ab000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x3c6/0x640 mm/page-writeback.c:2491
 __writeback_single_inode+0x153/0x1170 fs/fs-writeback.c:1673
 writeback_sb_inodes+0xad5/0x17f0 fs/fs-writeback.c:1964
 wb_writeback+0x470/0xd40 fs/fs-writeback.c:2138
 wb_do_writeback fs/fs-writeback.c:2281 [inline]
 wb_workfn+0x423/0xee0 fs/fs-writeback.c:2321
 process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_writepages+0x2e5f/0x2e70 fs/ext4/inode.c:2761
Code: c1 03 38 c1 0f 8c b2 fd ff ff 4c 89 e7 e8 49 92 ac ff e9 a5 fd ff ff e8 8f 65 5b ff 0f 0b e8 88 65 5b ff 0f 0b e8 81 65 5b ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 41 57 41 56 41
RSP: 0018:ffffc90004d5f040 EFLAGS: 00010293
RAX: ffffffff8226c89f RBX: 000000c41000c000 RCX: ffff88802bb3da00
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc90004d5f3b0 R08: ffff8880726d0a5f R09: 1ffff1100e4da14b
R10: dffffc0000000000 R11: ffffed100e4da14c R12: dffffc0000000000
R13: 0000000000000001 R14: 0000008000000000 R15: 1ffff920009abe34
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fab83c00ff8 CR3: 000000005b322000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400