------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2844! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 1020 Comm: kworker/u4:3 Not tainted 5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: writeback wb_workfn (flush-7:0) RIP: 0010:ext4_writepages+0x2f83/0x2fb0 fs/ext4/inode.c:2843 Code: 0f 94 c6 bf 02 00 00 00 e8 6a 29 a1 ff 84 db 75 2e e8 11 27 a1 ff 49 bc 00 00 00 00 00 fc ff df e9 47 f9 ff ff e8 fd 26 a1 ff <0f> 0b e8 f6 26 a1 ff 0f 0b e8 ef 26 a1 ff e8 ba ef 41 ff eb 9b e8 RSP: 0018:ffff8881e3a9f1a0 EFLAGS: 00010293 RAX: ffffffff81be57e3 RBX: 0000010410000000 RCX: ffff8881e5620000 RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000 RBP: ffff8881e3a9f4f0 R08: dffffc0000000000 R09: ffffed103b9745d8 R10: ffffed103b9745d8 R11: 1ffff1103b9745d7 R12: dffffc0000000000 R13: ffff8881e3a9f810 R14: 0000010000000000 R15: ffff8881dcba2f90 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000002 CR3: 00000001d9cff000 CR4: 00000000003406b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_writepages+0x127/0x270 mm/page-writeback.c:2366 __writeback_single_inode+0xd9/0xc30 fs/fs-writeback.c:1467 writeback_sb_inodes+0x94f/0x1700 fs/fs-writeback.c:1730 wb_writeback+0x3e1/0xc20 fs/fs-writeback.c:1905 wb_do_writeback fs/fs-writeback.c:2050 [inline] wb_workfn+0x375/0xf90 fs/fs-writeback.c:2091 process_one_work+0x73b/0xcc0 kernel/workqueue.c:2290 worker_thread+0xa5c/0x13b0 kernel/workqueue.c:2436 kthread+0x31e/0x3a0 kernel/kthread.c:288 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354 Modules linked in: ---[ end trace 0a486e17a43b94b8 ]--- RIP: 0010:ext4_writepages+0x2f83/0x2fb0 fs/ext4/inode.c:2843 Code: 0f 94 c6 bf 02 00 00 00 e8 6a 29 a1 ff 84 db 75 2e e8 11 27 a1 ff 49 bc 00 00 00 00 00 fc ff df e9 47 f9 ff ff e8 fd 26 a1 ff <0f> 0b e8 f6 26 a1 ff 0f 0b e8 ef 26 a1 ff e8 ba ef 41 ff eb 9b e8 RSP: 0018:ffff8881e3a9f1a0 EFLAGS: 00010293 RAX: ffffffff81be57e3 RBX: 0000010410000000 RCX: ffff8881e5620000 RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000 RBP: ffff8881e3a9f4f0 R08: dffffc0000000000 R09: ffffed103b9745d8 R10: ffffed103b9745d8 R11: 1ffff1103b9745d7 R12: dffffc0000000000 R13: ffff8881e3a9f810 R14: 0000010000000000 R15: ffff8881dcba2f90 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000002 CR3: 00000001d9cff000 CR4: 00000000003406b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400