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kernel BUG at fs/ext4/inode.c:2638!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 1083 Comm: kworker/u4:10 Not tainted 6.11.0-rc6-syzkaller-00026-g88fac17500f4 #0
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+0x3d38/0x3d40 fs/ext4/inode.c:2637
Code: af 8e 4c 89 f2 e8 e8 30 91 02 e9 ab fb ff ff e8 9e 76 38 ff 90 0f 0b e8 96 76 38 ff 90 0f 0b e8 7e 83 5e 09 e8 89 76 38 ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000283ebc0 EFLAGS: 00010293
RAX: ffffffff825b1627 RBX: 0000004000000000 RCX: ffff888033560000
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc9000283efd0 R08: ffffffff825ade03 R09: 1ffff11003ffa784
R10: dffffc0000000000 R11: ffffed1003ffa785 R12: 0000000000000001
R13: 0000000004208060 R14: 0000004210000000 R15: ffff88801ffd3e80
FS:  0000000000000000(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555583da8738 CR3: 0000000011d78000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_writepages+0x213/0x3c0 fs/ext4/inode.c:2842
 do_writepages+0x35d/0x870 mm/page-writeback.c:2683
 __writeback_single_inode+0x165/0x10b0 fs/fs-writeback.c:1651
 writeback_sb_inodes+0x99c/0x1380 fs/fs-writeback.c:1947
 wb_writeback+0x481/0xd40 fs/fs-writeback.c:2127
 wb_do_writeback fs/fs-writeback.c:2274 [inline]
 wb_workfn+0x410/0x1090 fs/fs-writeback.c:2314
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x3d38/0x3d40 fs/ext4/inode.c:2637
Code: af 8e 4c 89 f2 e8 e8 30 91 02 e9 ab fb ff ff e8 9e 76 38 ff 90 0f 0b e8 96 76 38 ff 90 0f 0b e8 7e 83 5e 09 e8 89 76 38 ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000283ebc0 EFLAGS: 00010293
RAX: ffffffff825b1627 RBX: 0000004000000000 RCX: ffff888033560000
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc9000283efd0 R08: ffffffff825ade03 R09: 1ffff11003ffa784
R10: dffffc0000000000 R11: ffffed1003ffa785 R12: 0000000000000001
R13: 0000000004208060 R14: 0000004210000000 R15: ffff88801ffd3e80
FS:  0000000000000000(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fad1f168d58 CR3: 000000003f96a000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400