------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2746! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 1743 Comm: kworker/u4:7 Not tainted 5.15.180-syzkaller-android13-5.15.180_r00 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: writeback wb_workfn (flush-7:4) RIP: 0010:ext4_writepages+0x3fe6/0x4000 fs/ext4/inode.c:2745 Code: 89 de e8 ed 79 87 ff 45 84 f6 75 2c e8 53 77 87 ff 49 be 00 00 00 00 00 fc ff df 4c 8b 64 24 50 e9 e4 c5 ff ff e8 3a 77 87 ff <0f> 0b e8 33 77 87 ff e8 9a e6 17 ff eb 9b e8 27 77 87 ff e8 8e e6 RSP: 0018:ffffc90001047000 EFLAGS: 00010293 RAX: ffffffff81e8a016 RBX: 0000008000000000 RCX: ffff888119c52780 RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 RBP: ffffc90001047410 R08: ffffffff81e89786 R09: ffffed1025d08814 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900010477d0 R13: 0000000000000000 R14: 000000c41000c000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ea15ff8 CR3: 0000000122d6a000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_writepages+0x40e/0x670 mm/page-writeback.c:2388 __writeback_single_inode+0xdf/0xa70 fs/fs-writeback.c:1647 writeback_sb_inodes+0xb2a/0x1920 fs/fs-writeback.c:1930 wb_writeback+0x3c8/0x9f0 fs/fs-writeback.c:2106 wb_do_writeback fs/fs-writeback.c:2253 [inline] wb_workfn+0x3d9/0x1110 fs/fs-writeback.c:2294 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472 kthread+0x421/0x510 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Modules linked in: ---[ end trace 24de2803fae4af5b ]--- RIP: 0010:ext4_writepages+0x3fe6/0x4000 fs/ext4/inode.c:2745 Code: 89 de e8 ed 79 87 ff 45 84 f6 75 2c e8 53 77 87 ff 49 be 00 00 00 00 00 fc ff df 4c 8b 64 24 50 e9 e4 c5 ff ff e8 3a 77 87 ff <0f> 0b e8 33 77 87 ff e8 9a e6 17 ff eb 9b e8 27 77 87 ff e8 8e e6 RSP: 0018:ffffc90001047000 EFLAGS: 00010293 RAX: ffffffff81e8a016 RBX: 0000008000000000 RCX: ffff888119c52780 RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 RBP: ffffc90001047410 R08: ffffffff81e89786 R09: ffffed1025d08814 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900010477d0 R13: 0000000000000000 R14: 000000c41000c000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcd609aff8 CR3: 0000000117d18000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400