linux-kernel - [syzbot] [mm?] kernel BUG in const_folio

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <0000000000006cfe98061423cde7@google.com>
Date: Wed, 20 Mar 2024 21:04:23 -0700
From: syzbot <syzbot+3b9148f91b7869120e81@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, linux-kernel@...r.kernel.org, 
	linux-mm@...ck.org, muchun.song@...ux.dev, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [mm?] kernel BUG in const_folio_flags

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@...kaller.appspotmail.com

 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@...glegroups.com.

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