------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2447! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8 Comm: kworker/u4:0 Not tainted 6.1.138-syzkaller-00046-gdb710ea87c32 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: writeback wb_workfn (flush-7:0) RIP: 0010:mpage_map_one_extent fs/ext4/inode.c:2447 [inline] RIP: 0010:mpage_map_and_submit_extent fs/ext4/inode.c:2488 [inline] RIP: 0010:ext4_writepages+0x2f61/0x3020 fs/ext4/inode.c:2856 Code: 08 48 89 df e8 50 17 cb ff 48 8b 3b 48 8b 74 24 40 48 8b 54 24 30 48 8b 4c 24 20 45 89 f0 e8 46 c8 07 00 eb 5b e8 9f be 86 ff <0f> 0b e8 98 be 86 ff eb 2f e8 91 be 86 ff eb 69 e8 8a be 86 ff 31 RSP: 0018:ffffc90000087120 EFLAGS: 00010293 RAX: ffffffff81e93271 RBX: 0000000000000000 RCX: ffff888100395100 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000087490 R08: dffffc0000000000 R09: ffffed10200b0026 R10: ffffed10200b0026 R11: 1ffff110200b0025 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff888100580168 R15: 000000000000042b FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055992c9921f8 CR3: 0000000006e0f000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_writepages+0x3a9/0x5e0 mm/page-writeback.c:2494 __writeback_single_inode+0xc6/0xad0 fs/fs-writeback.c:1612 writeback_sb_inodes+0x9b8/0x1550 fs/fs-writeback.c:1903 wb_writeback+0x3f1/0x980 fs/fs-writeback.c:2079 wb_do_writeback fs/fs-writeback.c:2226 [inline] wb_workfn+0x350/0xda0 fs/fs-writeback.c:2266 process_one_work+0x71f/0xc40 kernel/workqueue.c:2299 worker_thread+0xa29/0x11f0 kernel/workqueue.c:2446 kthread+0x281/0x320 kernel/kthread.c:386 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:mpage_map_one_extent fs/ext4/inode.c:2447 [inline] RIP: 0010:mpage_map_and_submit_extent fs/ext4/inode.c:2488 [inline] RIP: 0010:ext4_writepages+0x2f61/0x3020 fs/ext4/inode.c:2856 Code: 08 48 89 df e8 50 17 cb ff 48 8b 3b 48 8b 74 24 40 48 8b 54 24 30 48 8b 4c 24 20 45 89 f0 e8 46 c8 07 00 eb 5b e8 9f be 86 ff <0f> 0b e8 98 be 86 ff eb 2f e8 91 be 86 ff eb 69 e8 8a be 86 ff 31 RSP: 0018:ffffc90000087120 EFLAGS: 00010293 RAX: ffffffff81e93271 RBX: 0000000000000000 RCX: ffff888100395100 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000087490 R08: dffffc0000000000 R09: ffffed10200b0026 R10: ffffed10200b0026 R11: 1ffff110200b0025 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff888100580168 R15: 000000000000042b FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055992c9921f8 CR3: 0000000110139000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400