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kernel BUG at fs/ext4/inode.c:2748!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 12 Comm: kworker/u4:0 Not tainted 6.15.0-syzkaller-08297-ge0797d3b91de #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:ext4_do_writepages+0x3f2b/0x3f30 fs/ext4/inode.c:2747
Code: c1 0f 8c 2a fd ff ff 4c 89 e7 e8 a0 4e b0 ff e9 1d fd ff ff e8 26 31 4d ff 90 0f 0b e8 1e 31 4d ff 90 0f 0b e8 16 31 4d ff 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66
RSP: 0018:ffffc900001e6ce0 EFLAGS: 00010293
RAX: ffffffff8272f9da RBX: 0000006210000000 RCX: ffff88801c2fc880
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc900001e70f0 R08: ffff88804222e987 R09: 1ffff11008445d30
R10: dffffc0000000000 R11: ffffed1008445d31 R12: 0000000000000001
R13: 0000000004208060 R14: 0000004000000000 R15: ffffc900001e7140
FS:  0000000000000000(0000) GS:ffff88808d264000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555594c4f5c8 CR3: 0000000011763000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_writepages+0x205/0x350 fs/ext4/inode.c:2953
 do_writepages+0x32e/0x550 mm/page-writeback.c:2635
 __writeback_single_inode+0x145/0xff0 fs/fs-writeback.c:1680
 writeback_sb_inodes+0x6b5/0x1000 fs/fs-writeback.c:1976
 wb_writeback+0x43b/0xaf0 fs/fs-writeback.c:2156
 wb_do_writeback fs/fs-writeback.c:2303 [inline]
 wb_workfn+0x409/0xef0 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x3f2b/0x3f30 fs/ext4/inode.c:2747
Code: c1 0f 8c 2a fd ff ff 4c 89 e7 e8 a0 4e b0 ff e9 1d fd ff ff e8 26 31 4d ff 90 0f 0b e8 1e 31 4d ff 90 0f 0b e8 16 31 4d ff 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66
RSP: 0018:ffffc900001e6ce0 EFLAGS: 00010293
RAX: ffffffff8272f9da RBX: 0000006210000000 RCX: ffff88801c2fc880
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc900001e70f0 R08: ffff88804222e987 R09: 1ffff11008445d30
R10: dffffc0000000000 R11: ffffed1008445d31 R12: 0000000000000001
R13: 0000000004208060 R14: 0000004000000000 R15: ffffc900001e7140
FS:  0000000000000000(0000) GS:ffff88808d264000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c008039000 CR3: 0000000011763000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400