linux-kernel - mm: kernel BUG at mm/rmap.c:1663!

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: <52B206F4.2010706@oracle.com>
Date:	Wed, 18 Dec 2013 15:35:00 -0500
From:	Sasha Levin <sasha.levin@...cle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>
CC:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: mm: kernel BUG at mm/rmap.c:1663!

Hi all,

As a side note, I seem to be hitting various VM_BUG_ON(!PageLocked(page)) all over the code, is it
possible that something major broke that's causing this fallout?

While fuzzing with trinity inside a KVM tools guest running latest -next kernel, I've stumbled on 
the following spew.

[  588.698828] kernel BUG at mm/rmap.c:1663!
[  588.699380] invalid opcode: 0000 [#2] PREEMPT SMP DEBUG_PAGEALLOC
[  588.700347] Dumping ftrace buffer:
[  588.701186]    (ftrace buffer empty)
[  588.702062] Modules linked in:
[  588.702759] CPU: 0 PID: 4647 Comm: kswapd0 Tainted: G      D W    3.13.0-rc4-next-20
131218-sasha-00012-g1962367-dirty #4155
[  588.704330] task: ffff880062bcb000 ti: ffff880062450000 task.ti: ffff880062450000
[  588.705507] RIP: 0010:[<ffffffff81289c80>]  [<ffffffff81289c80>] rmap_walk+0x10/0x50
[  588.706800] RSP: 0018:ffff8800624518d8  EFLAGS: 00010246
[  588.707515] RAX: 000fffff80080048 RBX: ffffea00000227c0 RCX: 0000000000000000
[  588.707515] RDX: 0000000000000000 RSI: ffff8800624518e8 RDI: ffffea00000227c0
[  588.707515] RBP: ffff8800624518d8 R08: ffff8800624518e8 R09: 0000000000000000
[  588.707515] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800624519d8
[  588.707515] R13: 0000000000000000 R14: ffffea00000227e0 R15: 0000000000000000
[  588.707515] FS:  0000000000000000(0000) GS:ffff880065200000(0000) knlGS:000000000000
0000
[  588.707515] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  588.707515] CR2: 00007fec40cbe0f8 CR3: 00000000c2382000 CR4: 00000000000006f0
[  588.707515] Stack:
[  588.707515]  ffff880062451958 ffffffff81289f4b ffff880062451918 ffffffff81289f80
[  588.707515]  0000000000000000 0000000000000000 ffffffff8128af60 0000000000000000
[  588.707515]  0000000000000024 0000000000000000 0000000000000000 0000000000000286
[  588.707515] Call Trace:
[  588.707515]  [<ffffffff81289f4b>] page_referenced+0xcb/0x100
[  588.707515]  [<ffffffff81289f80>] ? page_referenced+0x100/0x100
[  588.707515]  [<ffffffff8128af60>] ? invalid_page_referenced_vma+0x170/0x170
[  588.707515]  [<ffffffff81264302>] shrink_active_list+0x212/0x330
[  588.707515]  [<ffffffff81260e23>] ? inactive_file_is_low+0x33/0x50
[  588.707515]  [<ffffffff812646f5>] shrink_lruvec+0x2d5/0x300
[  588.707515]  [<ffffffff812647b6>] shrink_zone+0x96/0x1e0
[  588.707515]  [<ffffffff81265b06>] kswapd_shrink_zone+0xf6/0x1c0
[  588.707515]  [<ffffffff81265f43>] balance_pgdat+0x373/0x550
[  588.707515]  [<ffffffff81266d63>] kswapd+0x2f3/0x350
[  588.707515]  [<ffffffff81266a70>] ? perf_trace_mm_vmscan_lru_isolate_template+0x120/
0x120
[  588.707515]  [<ffffffff8115c9c5>] kthread+0x105/0x110
[  588.707515]  [<ffffffff8115c8c0>] ? set_kthreadd_affinity+0x30/0x30
[  588.707515]  [<ffffffff843a6a7c>] ret_from_fork+0x7c/0xb0
[  588.707515]  [<ffffffff8115c8c0>] ? set_kthreadd_affinity+0x30/0x30
[  588.707515] Code: c0 48 83 c4 18 89 d0 5b 41 5c 41 5d 41 5e 41 5f c9 c3 66 0f 1f 84
00 00 00 00 00 55 48 89 e5 66 66 66 66 90 48 8b 07 a8 01 75 10 <0f> 0b 66 0f 1f 44 00 0
0 eb fe 66 0f 1f 44 00 00 f6 47 08 01 74
[  588.707515] RIP  [<ffffffff81289c80>] rmap_walk+0x10/0x50
[  588.707515]  RSP <ffff8800624518d8>


Thanks,
Sasha
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/