From: Dave Jones <davej@redhat.com>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Cc: Christoph Lameter <cl@linux-foundation.org>,
Pekka Enberg <penberg@kernel.org>,
linux-mm@kvack.org, Al Viro <viro@zeniv.linux.org.uk>
Subject: oops in slab/leaks_show
Date: Thu, 6 Mar 2014 21:57:03 -0500 [thread overview]
Message-ID: <20140307025703.GA30770@redhat.com> (raw)
I pretty much always use SLUB for my fuzzing boxes, but thought I'd give SLAB a try
for a change.. It blew up when something tried to read /proc/slab_allocators
(Just cat it, and you should see the oops below)
Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
Modules linked in: fuse hidp snd_seq_dummy tun rfcomm bnep llc2 af_key can_raw ipt_ULOG can_bcm nfnetlink scsi_transport_iscsi nfc caif_socket caif af_802154 phonet af_rxrpc can pppoe pppox ppp_generic slhc irda crc_ccitt rds rose x25 atm netrom appletalk ipx p8023 psnap p8022 llc ax25 cfg80211 xfs coretemp hwmon x86_pkg_temp_thermal kvm_intel kvm crct10dif_pclmul crc32c_intel ghash_clmulni_intel libcrc32c usb_debug microcode snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic pcspkr btusb bluetooth 6lowpan_iphc rfkill snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer e1000e snd ptp shpchp soundcore pps_core serio_raw
CPU: 1 PID: 9386 Comm: trinity-c33 Not tainted 3.14.0-rc5+ #131
task: ffff8801aa46e890 ti: ffff880076924000 task.ti: ffff880076924000
RIP: 0010:[<ffffffffaa1a8f4a>] [<ffffffffaa1a8f4a>] handle_slab+0x8a/0x180
RSP: 0018:ffff880076925de0 EFLAGS: 00010002
RAX: 0000000000001000 RBX: 0000000000000000 RCX: 000000005ce85ce7
RDX: ffffea00079be100 RSI: 0000000000001000 RDI: ffff880107458000
RBP: ffff880076925e18 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 000000000000000f R12: ffff8801e6f84000
R13: ffffea00079be100 R14: ffff880107458000 R15: ffff88022bb8d2c0
FS: 00007fb769e45740(0000) GS:ffff88024d040000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8801e6f84ff8 CR3: 00000000a22db000 CR4: 00000000001407e0
DR0: 0000000002695000 DR1: 0000000002695000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000070602
Stack:
ffff8802339dcfc0 ffff88022bb8d2c0 ffff880107458000 ffff88022bb8d2c0
ffff8802339dd008 ffff8802339dcfc0 ffffea00079be100 ffff880076925e68
ffffffffaa1ad9be ffff880203fe4f00 ffff88022bb8d318 0000000076925e98
Call Trace:
[<ffffffffaa1ad9be>] leaks_show+0xce/0x240
[<ffffffffaa1e6c0e>] seq_read+0x28e/0x490
[<ffffffffaa23008d>] proc_reg_read+0x3d/0x80
[<ffffffffaa1c026b>] vfs_read+0x9b/0x160
[<ffffffffaa1c0d88>] SyS_read+0x58/0xb0
[<ffffffffaa7420aa>] tracesys+0xd4/0xd9
Code: f5 00 00 00 0f 1f 44 00 00 48 63 c8 44 3b 0c 8a 0f 84 e3 00 00 00 83 c0 01 44 39 c0 72 eb 41 f6 47 1a 01 0f 84 e9 00 00 00 89 f0 <4d> 8b 4c 04 f8 4d 85 c9 0f 84 88 00 00 00 49 8b 7e 08 4d 8d 46
RIP [<ffffffffaa1a8f4a>] handle_slab+0x8a/0x180
RSP <ffff880076925de0>
CR2: ffff8801e6f84ff8
2b:* 4d 8b 4c 04 f8 mov -0x8(%r12,%rax,1),%r9 <-- trapping instruction
--
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WARNING: multiple messages have this Message-ID (diff)
From: Dave Jones <davej@redhat.com>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Cc: Christoph Lameter <cl@linux-foundation.org>,
Pekka Enberg <penberg@kernel.org>,
linux-mm@kvack.org, Al Viro <viro@zeniv.linux.org.uk>
Subject: oops in slab/leaks_show
Date: Thu, 6 Mar 2014 21:57:03 -0500 [thread overview]
Message-ID: <20140307025703.GA30770@redhat.com> (raw)
I pretty much always use SLUB for my fuzzing boxes, but thought I'd give SLAB a try
for a change.. It blew up when something tried to read /proc/slab_allocators
(Just cat it, and you should see the oops below)
Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
Modules linked in: fuse hidp snd_seq_dummy tun rfcomm bnep llc2 af_key can_raw ipt_ULOG can_bcm nfnetlink scsi_transport_iscsi nfc caif_socket caif af_802154 phonet af_rxrpc can pppoe pppox ppp_generic slhc irda crc_ccitt rds rose x25 atm netrom appletalk ipx p8023 psnap p8022 llc ax25 cfg80211 xfs coretemp hwmon x86_pkg_temp_thermal kvm_intel kvm crct10dif_pclmul crc32c_intel ghash_clmulni_intel libcrc32c usb_debug microcode snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic pcspkr btusb bluetooth 6lowpan_iphc rfkill snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer e1000e snd ptp shpchp soundcore pps_core serio_raw
CPU: 1 PID: 9386 Comm: trinity-c33 Not tainted 3.14.0-rc5+ #131
task: ffff8801aa46e890 ti: ffff880076924000 task.ti: ffff880076924000
RIP: 0010:[<ffffffffaa1a8f4a>] [<ffffffffaa1a8f4a>] handle_slab+0x8a/0x180
RSP: 0018:ffff880076925de0 EFLAGS: 00010002
RAX: 0000000000001000 RBX: 0000000000000000 RCX: 000000005ce85ce7
RDX: ffffea00079be100 RSI: 0000000000001000 RDI: ffff880107458000
RBP: ffff880076925e18 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 000000000000000f R12: ffff8801e6f84000
R13: ffffea00079be100 R14: ffff880107458000 R15: ffff88022bb8d2c0
FS: 00007fb769e45740(0000) GS:ffff88024d040000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8801e6f84ff8 CR3: 00000000a22db000 CR4: 00000000001407e0
DR0: 0000000002695000 DR1: 0000000002695000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000070602
Stack:
ffff8802339dcfc0 ffff88022bb8d2c0 ffff880107458000 ffff88022bb8d2c0
ffff8802339dd008 ffff8802339dcfc0 ffffea00079be100 ffff880076925e68
ffffffffaa1ad9be ffff880203fe4f00 ffff88022bb8d318 0000000076925e98
Call Trace:
[<ffffffffaa1ad9be>] leaks_show+0xce/0x240
[<ffffffffaa1e6c0e>] seq_read+0x28e/0x490
[<ffffffffaa23008d>] proc_reg_read+0x3d/0x80
[<ffffffffaa1c026b>] vfs_read+0x9b/0x160
[<ffffffffaa1c0d88>] SyS_read+0x58/0xb0
[<ffffffffaa7420aa>] tracesys+0xd4/0xd9
Code: f5 00 00 00 0f 1f 44 00 00 48 63 c8 44 3b 0c 8a 0f 84 e3 00 00 00 83 c0 01 44 39 c0 72 eb 41 f6 47 1a 01 0f 84 e9 00 00 00 89 f0 <4d> 8b 4c 04 f8 4d 85 c9 0f 84 88 00 00 00 49 8b 7e 08 4d 8d 46
RIP [<ffffffffaa1a8f4a>] handle_slab+0x8a/0x180
RSP <ffff880076925de0>
CR2: ffff8801e6f84ff8
2b:* 4d 8b 4c 04 f8 mov -0x8(%r12,%rax,1),%r9 <-- trapping instruction
next reply other threads:[~2014-03-07 2:57 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-07 2:57 Dave Jones [this message]
2014-03-07 2:57 ` oops in slab/leaks_show Dave Jones
2014-03-07 17:18 ` Christoph Lameter
2014-03-07 17:18 ` Christoph Lameter
2014-03-11 0:35 ` Joonsoo Kim
2014-03-11 0:35 ` Joonsoo Kim
2014-03-11 0:39 ` Dave Jones
2014-03-11 0:39 ` Dave Jones
2014-03-11 1:01 ` Joonsoo Kim
2014-03-11 1:01 ` Joonsoo Kim
2014-03-11 1:24 ` Dave Jones
2014-03-11 1:24 ` Dave Jones
2014-03-11 2:58 ` Joonsoo Kim
2014-03-11 2:58 ` Joonsoo Kim
2014-03-11 8:30 ` Joonsoo Kim
2014-03-11 8:30 ` Joonsoo Kim
2014-04-11 7:36 ` Pekka Enberg
2014-04-11 7:36 ` Pekka Enberg
2014-04-16 0:07 ` Joonsoo Kim
2014-04-16 0:07 ` Joonsoo Kim
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