------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2749!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 511 Comm: syz-executor261 Not tainted 6.1.75-syzkaller-00037-gdcb09569bbff #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:ext4_writepages+0x3fab/0x3fd0 fs/ext4/inode.c:2748
Code: 43 81 ff 31 ff 89 de e8 23 43 81 ff 45 84 f6 75 2a e8 89 40 81 ff 49 bc 00 00 00 00 00 fc ff df e9 6e f6 ff ff e8 75 40 81 ff <0f> 0b e8 6e 40 81 ff e8 55 62 0c ff e9 46 c3 ff ff e8 5f 40 81 ff
RSP: 0018:ffffc90001437000 EFLAGS: 00010293
RAX: ffffffff81f41dab RBX: 0000008000000000 RCX: ffff8881184dbcc0
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc90001437410 R08: ffffffff81f3e50b R09: ffffed10200b439e
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888119420000
R13: ffff8881005a1e28 R14: 0000009410000000 R15: ffffc900014372e0
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000280 CR3: 000000010fc6e000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x385/0x620 mm/page-writeback.c:2472
 filemap_fdatawrite_wbc+0x153/0x1b0 mm/filemap.c:402
 __filemap_fdatawrite_range mm/filemap.c:435 [inline]
 __filemap_fdatawrite mm/filemap.c:441 [inline]
 filemap_flush+0x11a/0x170 mm/filemap.c:468
 ext4_alloc_da_blocks+0x77/0x1a0 fs/ext4/inode.c:3153
 ext4_release_file+0x84/0x310 fs/ext4/file.c:158
 __fput+0x3ab/0x870 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x24d/0x2e0 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xbd5/0x2b80 kernel/exit.c:875
 do_group_exit+0x21a/0x2d0 kernel/exit.c:1025
 get_signal+0x169d/0x1820 kernel/signal.c:2880
 arch_do_signal_or_restart+0xb0/0x16f0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x74/0xa0 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:204
 irqentry_exit_to_user_mode+0x9/0x20 kernel/entry/common.c:310
 irqentry_exit+0x12/0x40 kernel/entry/common.c:413
 exc_page_fault+0x4f3/0x700 arch/x86/mm/fault.c:1565
 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f5123ad4ba8
Code: Unable to access opcode bytes at 0x7f5123ad4b7e.
RSP: 002b:00007f5123ac9220 EFLAGS: 00010213
RAX: 00007f5123ad4ba8 RBX: 00007f5123b95708 RCX: 00007f5123b0ce09
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f5123b9570c
RBP: 00007f5123b95700 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5123b6182c
R13: 00007f5123b610c0 R14: 0000000020000fc0 R15: 0030656c69662f2e
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_writepages+0x3fab/0x3fd0 fs/ext4/inode.c:2748
Code: 43 81 ff 31 ff 89 de e8 23 43 81 ff 45 84 f6 75 2a e8 89 40 81 ff 49 bc 00 00 00 00 00 fc ff df e9 6e f6 ff ff e8 75 40 81 ff <0f> 0b e8 6e 40 81 ff e8 55 62 0c ff e9 46 c3 ff ff e8 5f 40 81 ff
RSP: 0018:ffffc90001437000 EFLAGS: 00010293
RAX: ffffffff81f41dab RBX: 0000008000000000 RCX: ffff8881184dbcc0
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc90001437410 R08: ffffffff81f3e50b R09: ffffed10200b439e
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888119420000
R13: ffff8881005a1e28 R14: 0000009410000000 R15: ffffc900014372e0
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5123aca000 CR3: 0000000121030000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400