------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2623! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 3019 Comm: kworker/u8:10 Not tainted 6.14.0-syzkaller-12456-gacc4d5ff0b61 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: writeback wb_workfn (flush-7:1) RIP: 0010:ext4_do_writepages+0x3e44/0x3e50 fs/ext4/inode.c:2622 Code: f0 8e 4c 89 f2 e8 cc 13 b7 02 e9 83 fb ff ff e8 f2 df 41 ff 90 0f 0b e8 ea df 41 ff 90 0f 0b e8 b2 6a a6 09 e8 dd df 41 ff 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000be56c00 EFLAGS: 00010293 RAX: ffffffff82816603 RBX: 0000004000000000 RCX: ffff888031018000 RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000 RBP: ffffc9000be57010 R08: ffffffff82812d33 R09: 1ffff1100a497147 R10: dffffc0000000000 R11: ffffed100a497148 R12: 0000000000000001 R13: ffffc9000be57520 R14: 0000004210000000 R15: ffffc9000be57080 FS: 0000000000000000(0000) GS:ffff888124fcf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555901af808 CR3: 0000000069f72000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_writepages+0x26f/0x450 fs/ext4/inode.c:2828 do_writepages+0x364/0x890 mm/page-writeback.c:2656 __writeback_single_inode+0x14f/0x10d0 fs/fs-writeback.c:1680 writeback_sb_inodes+0x822/0x1360 fs/fs-writeback.c:1976 wb_writeback+0x415/0xb90 fs/fs-writeback.c:2156 wb_do_writeback fs/fs-writeback.c:2303 [inline] wb_workfn+0x412/0x10b0 fs/fs-writeback.c:2343 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319 worker_thread+0x870/0xd50 kernel/workqueue.c:3400 kthread+0x7b7/0x940 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_do_writepages+0x3e44/0x3e50 fs/ext4/inode.c:2622 Code: f0 8e 4c 89 f2 e8 cc 13 b7 02 e9 83 fb ff ff e8 f2 df 41 ff 90 0f 0b e8 ea df 41 ff 90 0f 0b e8 b2 6a a6 09 e8 dd df 41 ff 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000be56c00 EFLAGS: 00010293 RAX: ffffffff82816603 RBX: 0000004000000000 RCX: ffff888031018000 RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000 RBP: ffffc9000be57010 R08: ffffffff82812d33 R09: 1ffff1100a497147 R10: dffffc0000000000 R11: ffffed100a497148 R12: 0000000000000001 R13: ffffc9000be57520 R14: 0000004210000000 R15: ffffc9000be57080 FS: 0000000000000000(0000) GS:ffff8881250cf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563932e3a238 CR3: 0000000034ae6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400