------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2736! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4754 Comm: kworker/u4:16 Not tainted 6.1.42-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 Workqueue: writeback wb_workfn (flush-7:1) RIP: 0010:ext4_writepages+0x3dd9/0x3de0 fs/ext4/inode.c:2735 Code: c7 b0 e4 2b 8d 4c 89 f2 e8 54 e7 26 02 e9 b9 fb ff ff e8 8a d5 50 ff 0f 0b e8 83 d5 50 ff 0f 0b e8 ec 6f 4b 08 e8 77 d5 50 ff <0f> 0b 0f 1f 44 00 00 41 57 41 56 41 55 41 54 53 49 89 f7 49 89 fe RSP: 0018:ffffc9000a12ef60 EFLAGS: 00010293 RAX: ffffffff82391539 RBX: 0000008000000000 RCX: ffff88807b6f8000 RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 RBP: ffffc9000a12f350 R08: ffffffff8238ddf0 R09: ffffed1010260c95 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffffc9000a12f710 R14: 000000c410000000 R15: ffffc9000a12f220 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33328000 CR3: 0000000018e7f000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000093 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: do_writepages+0x3a2/0x670 mm/page-writeback.c:2469 __writeback_single_inode+0x15d/0x11e0 fs/fs-writeback.c:1590 writeback_sb_inodes+0xc21/0x1ac0 fs/fs-writeback.c:1881 wb_writeback+0x49d/0xe10 fs/fs-writeback.c:2055 wb_do_writeback fs/fs-writeback.c:2198 [inline] wb_workfn+0x427/0x1020 fs/fs-writeback.c:2238 process_one_work+0x8aa/0x11f0 kernel/workqueue.c:2292 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2439 kthread+0x26e/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_writepages+0x3dd9/0x3de0 fs/ext4/inode.c:2735 Code: c7 b0 e4 2b 8d 4c 89 f2 e8 54 e7 26 02 e9 b9 fb ff ff e8 8a d5 50 ff 0f 0b e8 83 d5 50 ff 0f 0b e8 ec 6f 4b 08 e8 77 d5 50 ff <0f> 0b 0f 1f 44 00 00 41 57 41 56 41 55 41 54 53 49 89 f7 49 89 fe RSP: 0018:ffffc9000a12ef60 EFLAGS: 00010293 RAX: ffffffff82391539 RBX: 0000008000000000 RCX: ffff88807b6f8000 RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 RBP: ffffc9000a12f350 R08: ffffffff8238ddf0 R09: ffffed1010260c95 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffffc9000a12f710 R14: 000000c410000000 R15: ffffc9000a12f220 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33122000 CR3: 000000009a111000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000093 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400