From: Dmitry Vyukov <dvyukov@google.com>
To: Andrew Morton <akpm@linux-foundation.org>,
David Rientjes <rientjes@google.com>,
Vladimir Davydov <vdavydov@virtuozzo.com>,
zijun_hu@zoho.com, Joonsoo Kim <iamjoonsoo.kim@lge.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Konstantin Khlebnikov <koct9i@gmail.com>
Cc: syzkaller <syzkaller@googlegroups.com>
Subject: mm: GPF in __insert_vmap_area
Date: Sat, 3 Sep 2016 14:15:14 +0200 [thread overview]
Message-ID: <CACT4Y+ZByeFG4bYEPPSKH9ZfGquj560EqxJAo0BfjrqMguFVTw@mail.gmail.com> (raw)
Hello,
While running syzkaller fuzzer I've got the following GPF:
general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN
Dumping ftrace buffer:
(ftrace buffer empty)
Modules linked in:
CPU: 2 PID: 4268 Comm: syz-executor Not tainted 4.8.0-rc3-next-20160825+ #8
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff88006a6527c0 task.stack: ffff880052630000
RIP: 0010:[<ffffffff82e1ccd6>] [<ffffffff82e1ccd6>]
__list_add_valid+0x26/0xd0 lib/list_debug.c:23
RSP: 0018:ffff880052637a18 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90001c87000
RDX: 0000000000000001 RSI: ffff88001344cdb0 RDI: 0000000000000008
RBP: ffff880052637a30 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8a5deee0 R12: ffff88006cc47230
R13: ffff88001344cdb0 R14: ffff88006cc47230 R15: 0000000000000000
FS: 00007fbacc97e700(0000) GS:ffff88006d200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020de7000 CR3: 000000003c4d2000 CR4: 00000000000006e0
DR0: 000000000000001e DR1: 000000000000001e DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Stack:
ffff88006cc47200 ffff88001344cd98 ffff88006cc47200 ffff880052637a78
ffffffff817bc6d1 ffff88006cc47208 ffffed000d988e41 ffff88006cc47208
ffff88006cc3e680 ffffc900035b7000 ffffc900035a7000 ffff88006cc47200
Call Trace:
[< inline >] __list_add_rcu include/linux/rculist.h:51
[< inline >] list_add_rcu include/linux/rculist.h:78
[<ffffffff817bc6d1>] __insert_vmap_area+0x1c1/0x3c0 mm/vmalloc.c:340
[<ffffffff817bf544>] alloc_vmap_area+0x614/0x890 mm/vmalloc.c:458
[<ffffffff817bf8a8>] __get_vm_area_node+0xe8/0x340 mm/vmalloc.c:1377
[<ffffffff817c332a>] __vmalloc_node_range+0xaa/0x6d0 mm/vmalloc.c:1687
[< inline >] __vmalloc_node mm/vmalloc.c:1736
[<ffffffff817c39ab>] __vmalloc+0x5b/0x70 mm/vmalloc.c:1742
[<ffffffff8166ae9c>] bpf_prog_alloc+0x3c/0x190 kernel/bpf/core.c:82
[<ffffffff85c40ba9>] bpf_prog_create_from_user+0xa9/0x2c0
net/core/filter.c:1132
[< inline >] seccomp_prepare_filter kernel/seccomp.c:373
[< inline >] seccomp_prepare_user_filter kernel/seccomp.c:408
[< inline >] seccomp_set_mode_filter kernel/seccomp.c:737
[<ffffffff815d7687>] do_seccomp+0x317/0x1800 kernel/seccomp.c:787
[<ffffffff815d8f84>] prctl_set_seccomp+0x34/0x60 kernel/seccomp.c:830
[< inline >] SYSC_prctl kernel/sys.c:2157
[<ffffffff813ccf8f>] SyS_prctl+0x82f/0xc80 kernel/sys.c:2075
[<ffffffff86e10700>] entry_SYSCALL_64_fastpath+0x23/0xc1
Code: 00 00 00 00 00 55 48 b8 00 00 00 00 00 fc ff df 48 89 e5 41 54
49 89 fc 48 8d 7a 08 53 48 89 d3 48 89 fa 48 83 ec 08 48 c1 ea 03 <80>
3c 02 00 75 7c 48 8b 53 08 48 39 f2 75 37 48 89 f2 48 b8 00
RIP [<ffffffff82e1ccd6>] __list_add_valid+0x26/0xd0 lib/list_debug.c:23
RSP <ffff880052637a18>
---[ end trace 983e625f02f00d9f ]---
Kernel panic - not syncing: Fatal exception
On commit 0f98f121e1670eaa2a2fbb675e07d6ba7f0e146f of linux-next.
Unfortunately it is not reproducible.
The crashing line is:
CHECK_DATA_CORRUPTION(next->prev != prev,
It crashed on KASAN check at (%rax, %rdx), this address corresponds to
next address = 0x8. So next was ~NULL.
--
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next reply other threads:[~2016-09-03 12:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-03 12:15 Dmitry Vyukov [this message]
2016-09-04 23:30 ` zijun_hu
2016-09-05 8:37 ` Dmitry Vyukov
2016-09-06 21:03 ` Kees Cook
2016-09-06 23:11 ` Daniel Borkmann
2016-09-07 17:23 ` Kees Cook
2016-09-08 15:05 ` Dmitry Vyukov
2016-10-22 6:27 ` Kees Cook
2016-09-07 7:29 ` Paul E. McKenney
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