Hello, syzbot found the following issue on: HEAD commit: 78c3925c048c Merge tag 'soc-late-6.9' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1267d879180000 kernel config: https://syzkaller.appspot.com/x/.config?x=f3c2635ded15fbc9 dashboard link: https://syzkaller.appspot.com/bug?extid=3b9148f91b7869120e81 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-78c3925c.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/cf2bceeccde3/vmlinux-78c3925c.xz kernel image: https://storage.googleapis.com/syzbot-assets/fc938dfaea6d/bzImage-78c3925c.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+3b9148f91b7869120e81@xxxxxxxxxxxxxxxxxxxxxxxxx veth_newlink+0x627/0xa10 drivers/net/veth.c:1895 rtnl_newlink_create net/core/rtnetlink.c:3494 [inline] __rtnl_newlink+0x119c/0x1960 net/core/rtnetlink.c:3714 rtnl_newlink+0x67/0xa0 net/core/rtnetlink.c:3727 rtnetlink_rcv_msg+0x3c7/0xe60 net/core/rtnetlink.c:6595 ------------[ cut here ]------------ kernel BUG at include/linux/page-flags.h:315! invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 PID: 42 Comm: kcompactd0 Not tainted 6.8.0-syzkaller-11725-g78c3925c048c #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:const_folio_flags+0x1bd/0x1f0 include/linux/page-flags.h:315 Code: 41 83 e4 01 44 89 e6 e8 b1 e6 a9 ff 45 84 e4 0f 85 c4 fe ff ff e8 23 ec a9 ff 48 c7 c6 e0 07 1b 8b 48 89 ef e8 34 2e ed ff 90 <0f> 0b e8 8c 6b 06 00 e9 66 fe ff ff 48 89 ef e8 7f 6b 06 00 eb b6 RSP: 0018:ffffc9000068f7f0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc9000068f698 RDX: ffff88801744c880 RSI: ffffffff81e4265c RDI: ffffffff8b6f0060 RBP: ffffea0000a04c00 R08: 0000000000000000 R09: fffffbfff1f3deca R10: ffffffff8f9ef657 R11: 0000000000000000 R12: 0000000000000000 R13: ffffea0000a04dc0 R14: 0000000000028137 R15: ffffc9000068fbe8 FS: 0000000000000000(0000) GS:ffff88802c300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe623b9138 CR3: 000000001c22c000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> folio_test_hugetlb include/linux/page-flags.h:875 [inline] PageHuge+0x219/0x2b0 mm/hugetlb.c:2174 isolate_migratepages_block+0x4a0/0x5110 mm/compaction.c:1004 isolate_migratepages mm/compaction.c:2182 [inline] compact_zone+0x1a5c/0x4280 mm/compaction.c:2629 kcompactd_do_work+0x340/0x720 mm/compaction.c:3100 kcompactd+0x8d7/0xde0 mm/compaction.c:3199 kthread+0x2c1/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:const_folio_flags+0x1bd/0x1f0 include/linux/page-flags.h:315 Code: 41 83 e4 01 44 89 e6 e8 b1 e6 a9 ff 45 84 e4 0f 85 c4 fe ff ff e8 23 ec a9 ff 48 c7 c6 e0 07 1b 8b 48 89 ef e8 34 2e ed ff 90 <0f> 0b e8 8c 6b 06 00 e9 66 fe ff ff 48 89 ef e8 7f 6b 06 00 eb b6 RSP: 0018:ffffc9000068f7f0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc9000068f698 RDX: ffff88801744c880 RSI: ffffffff81e4265c RDI: ffffffff8b6f0060 RBP: ffffea0000a04c00 R08: 0000000000000000 R09: fffffbfff1f3deca R10: ffffffff8f9ef657 R11: 0000000000000000 R12: 0000000000000000 R13: ffffea0000a04dc0 R14: 0000000000028137 R15: ffffc9000068fbe8 FS: 0000000000000000(0000) GS:ffff88802c300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe623b9138 CR3: 000000001c22c000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
