EXT4-fs (loop3): This should not happen!! Data will be lost
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kernel BUG at fs/ext4/inode.c:2766!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 278 Comm: kworker/u4:2 Not tainted 5.10.192-syzkaller-00409-gc8ca447a86a2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: writeback wb_workfn (flush-7:5)
RIP: 0010:ext4_writepages+0x3bdf/0x3c00 fs/ext4/inode.c:2765
Code: b3 8c ff 31 ff 89 de e8 7f b3 8c ff 45 84 f6 75 27 e8 e5 b0 8c ff 49 be 00 00 00 00 00 fc ff df e9 0e f7 ff ff e8 d1 b0 8c ff <0f> 0b e8 ca b0 8c ff e8 d1 9b 22 ff eb 9b e8 be b0 8c ff e8 c5 9b
RSP: 0018:ffffc90000be70a0 EFLAGS: 00010293
RAX: ffffffff81dde37f RBX: 0000008000000000 RCX: ffff88811e1b13c0
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc90000be7490 R08: ffffffff81ddadf3 R09: ffffed102389da61
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: ffffc90000be77d0 R14: 0000008410000000 R15: ffffc90000be7360
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdd9260e68 CR3: 0000000118551000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_writepages+0x12e/0x270 mm/page-writeback.c:2358
 __writeback_single_inode+0xd7/0xac0 fs/fs-writeback.c:1470
 writeback_sb_inodes+0x99c/0x16b0 fs/fs-writeback.c:1733
 wb_writeback+0x404/0xc60 fs/fs-writeback.c:1908
 wb_do_writeback fs/fs-writeback.c:2053 [inline]
 wb_workfn+0x3d9/0x1110 fs/fs-writeback.c:2094
 process_one_work+0x6dc/0xbd0 kernel/workqueue.c:2301
 worker_thread+0xaea/0x1510 kernel/workqueue.c:2447
 kthread+0x34b/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:299
Modules linked in:
---[ end trace 67cbe09ed61a42a5 ]---
RIP: 0010:ext4_writepages+0x3bdf/0x3c00 fs/ext4/inode.c:2765
Code: b3 8c ff 31 ff 89 de e8 7f b3 8c ff 45 84 f6 75 27 e8 e5 b0 8c ff 49 be 00 00 00 00 00 fc ff df e9 0e f7 ff ff e8 d1 b0 8c ff <0f> 0b e8 ca b0 8c ff e8 d1 9b 22 ff eb 9b e8 be b0 8c ff e8 c5 9b
RSP: 0018:ffffc90000be70a0 EFLAGS: 00010293
RAX: ffffffff81dde37f RBX: 0000008000000000 RCX: ffff88811e1b13c0
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc90000be7490 R08: ffffffff81ddadf3 R09: ffffed102389da61
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: ffffc90000be77d0 R14: 0000008410000000 R15: ffffc90000be7360
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdd9260e68 CR3: 0000000118551000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400