Public bug reported:
Using the official Ubuntu 11.10 oneiric AMI for EC2 (in the us-east-1
region), attempting to start atop from the command line hangs.
Checking /var/log/kern.log yields:
Oct 17 22:18:44 puppetmaster kernel: [ 3.812786] alignment check: 0000 [#1]
SMP
Oct 17 22:18:44 puppetmaster kernel: [ 3.812802] CPU 0
Oct 17 22:18:44 puppetmaster kernel: [ 3.812804] Modules linked in: acpiphp
Oct 17 22:18:44 puppetmaster kernel: [ 3.812812]
Oct 17 22:18:44 puppetmaster kernel: [ 3.812816] Pid: 526, comm: atop Not
tainted 3.0.0-12-virtual #20-Ubuntu
Oct 17 22:18:44 puppetmaster kernel: [ 3.812825] RIP:
e030:[<ffffffff8112cac4>] [<ffffffff8112cac4>] zap_pte_range+0x44/0x3d0
Oct 17 22:18:44 puppetmaster kernel: [ 3.812839] RSP: e02b:ffff88002382ba78
EFLAGS: 00050296
Oct 17 22:18:44 puppetmaster kernel: [ 3.812844] RAX: ffff880002628000 RBX:
ffff880002493020 RCX: 0000000000624000
Oct 17 22:18:44 puppetmaster kernel: [ 3.812850] RDX: ffff880002493018 RSI:
ffff8800025656e0 RDI: ffff88002382bc18
Oct 17 22:18:44 puppetmaster kernel: [ 3.812856] RBP: ffff88002382bb18 R08:
0000000000625000 R09: 0000000000000000
Oct 17 22:18:44 puppetmaster kernel: [ 3.812862] R10: 0000000000000000 R11:
0000000000000000 R12: 0000000000624000
Oct 17 22:18:44 puppetmaster kernel: [ 3.812868] R13: 0000000000625000 R14:
ffff880024452380 R15: 0000000000625000
Oct 17 22:18:44 puppetmaster kernel: [ 3.812877] FS: 00007fca991b2720(0000)
GS:ffff88002657b000(0000) knlGS:0000000000000000
Oct 17 22:18:44 puppetmaster kernel: [ 3.812883] CS: e033 DS: 0000 ES: 0000
CR0: 000000008005003b
Oct 17 22:18:44 puppetmaster kernel: [ 3.812889] CR2: 00007fca991b29f0 CR3:
0000000001c03000 CR4: 0000000000002620
Oct 17 22:18:44 puppetmaster kernel: [ 3.812895] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Oct 17 22:18:44 puppetmaster kernel: [ 3.812901] DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000000
Oct 17 22:18:44 puppetmaster kernel: [ 3.812908] Process atop (pid: 526,
threadinfo ffff88002382a000, task ffff880002628000)
Oct 17 22:18:44 puppetmaster kernel: [ 3.812914] Stack:
Oct 17 22:18:44 puppetmaster kernel: [ 3.812917] 0000000024330000
ffff88002382bb28 ffffffff8100471d ffff88002382bac0
Oct 17 22:18:44 puppetmaster kernel: [ 3.812928] ffffffff81005c49
ffff880002628000 ffff880002493018 ffff880002493018
Oct 17 22:18:44 puppetmaster kernel: [ 3.812939] ffff8800025656e0
ffff88002382bc18 0000000000000000 ffff88002382bba8
Oct 17 22:18:44 puppetmaster kernel: [ 3.812950] Call Trace:
Oct 17 22:18:44 puppetmaster kernel: [ 3.812958] [<ffffffff8100471d>] ?
__raw_callee_save_xen_make_pte+0x11/0x1e
Oct 17 22:18:44 puppetmaster kernel: [ 3.812965] [<ffffffff81005c49>] ?
pte_mfn_to_pfn+0x89/0xf0
Oct 17 22:18:44 puppetmaster kernel: [ 3.812972] [<ffffffff81004759>] ?
__raw_callee_save_xen_pmd_val+0x11/0x1e
Oct 17 22:18:44 puppetmaster kernel: [ 3.812979] [<ffffffff8112cffa>]
unmap_page_range+0x1aa/0x2f0
Oct 17 22:18:44 puppetmaster kernel: [ 3.812985] [<ffffffff8112d6da>]
unmap_vmas+0xca/0x160
Oct 17 22:18:44 puppetmaster kernel: [ 3.812993] [<ffffffff81007aef>] ?
xen_restore_fl_direct_reloc+0x4/0x4
Oct 17 22:18:44 puppetmaster kernel: [ 3.813001] [<ffffffff81134ba7>]
exit_mmap+0x97/0x140
Oct 17 22:18:44 puppetmaster kernel: [ 3.813007] [<ffffffff810073ed>] ?
xen_force_evtchn_callback+0xd/0x10
Oct 17 22:18:44 puppetmaster kernel: [ 3.813014] [<ffffffff81007b02>] ?
check_events+0x12/0x20
Oct 17 22:18:44 puppetmaster kernel: [ 3.813021] [<ffffffff8105c1b2>]
mmput.part.21+0x42/0x130
Oct 17 22:18:44 puppetmaster kernel: [ 3.813027] [<ffffffff8105c2c5>]
mmput+0x25/0x30
Oct 17 22:18:44 puppetmaster kernel: [ 3.813034] [<ffffffff810629da>]
exit_mm+0x12a/0x160
Oct 17 22:18:44 puppetmaster kernel: [ 3.813041] [<ffffffff810d7085>] ?
taskstats_exit+0x45/0x240
Oct 17 22:18:44 puppetmaster kernel: [ 3.813049] [<ffffffff816038e5>] ?
_raw_spin_lock_irq+0x15/0x20
Oct 17 22:18:44 puppetmaster kernel: [ 3.813056] [<ffffffff81062b8e>]
do_exit+0x17e/0x440
Oct 17 22:18:44 puppetmaster kernel: [ 3.813063] [<ffffffff8107123a>] ?
__dequeue_signal+0x6a/0xb0
Oct 17 22:18:44 puppetmaster kernel: [ 3.813069] [<ffffffff81062ff4>]
do_group_exit+0x44/0xa0
Oct 17 22:18:44 puppetmaster kernel: [ 3.813076] [<ffffffff81073a8d>]
get_signal_to_deliver+0x27d/0x3f0
Oct 17 22:18:44 puppetmaster kernel: [ 3.813083] [<ffffffff8100a7a6>]
do_signal+0x56/0x180
Oct 17 22:18:44 puppetmaster kernel: [ 3.813089] [<ffffffff81603dd5>] ?
page_fault+0x25/0x30
Oct 17 22:18:44 puppetmaster kernel: [ 3.813095] [<ffffffff8160403a>] ?
error_exit+0x2a/0x60
Oct 17 22:18:44 puppetmaster kernel: [ 3.813101] [<ffffffff81603b61>] ?
retint_restore_args+0x5/0x6
Oct 17 22:18:44 puppetmaster kernel: [ 3.813108] [<ffffffff8100aa95>]
do_notify_resume+0x65/0x80
Oct 17 22:18:44 puppetmaster kernel: [ 3.813114] [<ffffffff8105779e>] ?
schedule_tail+0x5e/0xb0
Oct 17 22:18:44 puppetmaster kernel: [ 3.813121] [<ffffffff8160bc90>]
int_signal+0x12/0x17
Oct 17 22:18:44 puppetmaster kernel: [ 3.813126] Code: 65 48 8b 04 25 80 cd
00 00 48 89 7d a8 48 89 75 a0 49 89 cc 48 89 55 98 4d 89 c7 4c 89 4d b0 48 89
45 88 0f 1f 40 00 48 8b 55 98
Oct 17 22:18:44 puppetmaster kernel: [ 3.813212] RIP [<ffffffff8112cac4>]
zap_pte_range+0x44/0x3d0
Oct 17 22:18:44 puppetmaster kernel: [ 3.813218] RSP <ffff88002382ba78>
Oct 17 22:18:44 puppetmaster kernel: [ 3.813224] ---[ end trace
580b9d5516d0dbb8 ]---
Oct 17 22:18:44 puppetmaster kernel: [ 3.813228] Fixing recursive fault but
reboot is needed!
It's entirely possible the bug is actually in the kernel, but so far
this behavior only manifests itself when running atop.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: atop (not installed)
ProcVersionSignature: User Name 3.0.0-12.20-virtual 3.0.4
Uname: Linux 3.0.0-12-virtual x86_64
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
Date: Mon Oct 17 22:51:05 2011
Ec2AMI: ami-bbf539d2
Ec2AMIManifest: (unknown)
Ec2AvailabilityZone: us-east-1a
Ec2InstanceType: t1.micro
Ec2Kernel: aki-825ea7eb
Ec2Ramdisk: unavailable
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: atop
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: atop (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug ec2-images linux-image oneiric
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https://bugs.launchpad.net/bugs/876956
Title:
starting interactive atop causes kernel alignment check
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