------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2749! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 1082 Comm: kworker/u4:4 Not tainted 6.1.78-syzkaller-00009-g25216be1ac5e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Workqueue: writeback wb_workfn (flush-7:2) RIP: 0010:ext4_writepages+0x3fab/0x3fd0 fs/ext4/inode.c:2748 Code: ce 80 ff 31 ff 89 de e8 b3 ce 80 ff 45 84 f6 75 2a e8 19 cc 80 ff 49 bc 00 00 00 00 00 fc ff df e9 6e f6 ff ff e8 05 cc 80 ff <0f> 0b e8 fe cb 80 ff e8 05 d8 0b ff e9 46 c3 ff ff e8 ef cb 80 ff RSP: 0000:ffffc90000787000 EFLAGS: 00010293 RAX: ffffffff81f4a7fb RBX: 0000008000000000 RCX: ffff888116e7a880 RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 RBP: ffffc90000787410 R08: ffffffff81f46f5b R09: ffffed10200df0c2 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88812af78000 R13: ffff8881006f8748 R14: 000000c410000000 R15: ffffc900007872e0 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30847000 CR3: 000000012ef79000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_writepages+0x385/0x620 mm/page-writeback.c:2472 __writeback_single_inode+0xdc/0xb80 fs/fs-writeback.c:1612 writeback_sb_inodes+0xb32/0x1910 fs/fs-writeback.c:1903 wb_writeback+0x3b9/0x9f0 fs/fs-writeback.c:2077 wb_do_writeback fs/fs-writeback.c:2220 [inline] wb_workfn+0x399/0x1030 fs/fs-writeback.c:2260 process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299 worker_thread+0xa60/0x1260 kernel/workqueue.c:2446 kthread+0x26d/0x300 kernel/kthread.c:386 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_writepages+0x3fab/0x3fd0 fs/ext4/inode.c:2748 Code: ce 80 ff 31 ff 89 de e8 b3 ce 80 ff 45 84 f6 75 2a e8 19 cc 80 ff 49 bc 00 00 00 00 00 fc ff df e9 6e f6 ff ff e8 05 cc 80 ff <0f> 0b e8 fe cb 80 ff e8 05 d8 0b ff e9 46 c3 ff ff e8 ef cb 80 ff RSP: 0000:ffffc90000787000 EFLAGS: 00010293 RAX: ffffffff81f4a7fb RBX: 0000008000000000 RCX: ffff888116e7a880 RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 RBP: ffffc90000787410 R08: ffffffff81f46f5b R09: ffffed10200df0c2 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88812af78000 R13: ffff8881006f8748 R14: 000000c410000000 R15: ffffc900007872e0 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556635858 CR3: 0000000137d21000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400