------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2851! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 352 Comm: kworker/u4:3 Not tainted 5.4.225-syzkaller-00007-g250ac66f1853 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Workqueue: writeback wb_workfn (flush-7:3) RIP: 0010:ext4_writepages+0x3a16/0x3a40 fs/ext4/inode.c:2850 Code: 7a a2 ff 31 ff 89 de e8 f8 79 a2 ff 45 84 f6 75 2e e8 de 77 a2 ff 49 bd 00 00 00 00 00 fc ff df e9 6e f9 ff ff e8 ca 77 a2 ff <0f> 0b e8 c3 77 a2 ff 0f 0b e8 bc 77 a2 ff e8 77 87 3f ff eb 8f e8 RSP: 0018:ffff8881b03bf100 EFLAGS: 00010293 RAX: ffffffff81c0bf36 RBX: 0000010000000000 RCX: ffff8881f0a14ec0 RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000 RBP: ffff8881b03bf4f0 R08: ffffffff81c08d1f R09: ffffed103cce9523 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881e674a9c0 R13: dffffc0000000000 R14: 0000018410000000 R15: ffff8881b03bf3c0 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffed26f6ff8 CR3: 00000001ed52d000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_writepages+0x12b/0x270 mm/page-writeback.c:2344 __writeback_single_inode+0xd9/0xcc0 fs/fs-writeback.c:1467 writeback_sb_inodes+0xa2c/0x1990 fs/fs-writeback.c:1730 wb_writeback+0x403/0xd70 fs/fs-writeback.c:1905 wb_do_writeback fs/fs-writeback.c:2050 [inline] wb_workfn+0x3a9/0x10c0 fs/fs-writeback.c:2091 process_one_work+0x765/0xd20 kernel/workqueue.c:2287 worker_thread+0xaef/0x1470 kernel/workqueue.c:2433 kthread+0x2da/0x360 kernel/kthread.c:288 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354 Modules linked in: ---[ end trace 49af8a11c9fd95de ]--- RIP: 0010:ext4_writepages+0x3a16/0x3a40 fs/ext4/inode.c:2850 Code: 7a a2 ff 31 ff 89 de e8 f8 79 a2 ff 45 84 f6 75 2e e8 de 77 a2 ff 49 bd 00 00 00 00 00 fc ff df e9 6e f9 ff ff e8 ca 77 a2 ff <0f> 0b e8 c3 77 a2 ff 0f 0b e8 bc 77 a2 ff e8 77 87 3f ff eb 8f e8 RSP: 0018:ffff8881b03bf100 EFLAGS: 00010293 RAX: ffffffff81c0bf36 RBX: 0000010000000000 RCX: ffff8881f0a14ec0 RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000 RBP: ffff8881b03bf4f0 R08: ffffffff81c08d1f R09: ffffed103cce9523 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881e674a9c0 R13: dffffc0000000000 R14: 0000018410000000 R15: ffff8881b03bf3c0 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffed26f6ff8 CR3: 00000001b5b6f000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400