** Description changed:
Hello.
Some days ago, Firefox unexpectedly has been closed after a couple of
hours (mostly viewed: YouTube and some other websites). Next, a dialog
box related to the Mozilla Crash Reporter appeared - with message, that
reporter is disabled (which I did earlier via 'about:config' and
*datareporting.healthreport.service.enabled* key set to _false_) and no
- crash report is available even via 'about:crashes' etc. After this
- situation two entries appeared in the log files: first related to
- AppArmor and second plugin-container segfault. By the way: in the same
- time an update for flash-plugin was also available (see: 1).
+ crash report is available even via 'about:crashes' etc.
+
+ After this situation two entries appeared in the log files: first
+ related to the AppArmor and second: plugin-container segfault. By the
+ way: in the same time there was an update for flash-plugin available
+ (see: 1).
Anyway, 'LastCrash' file (which can be found in ~/.mozilla/firefox/Crash
Reports/ directory) contains only: 1484142985. Just like all the others
files in this directory. There are also two folders called: 'events' and
- 'pending'. These directories are completely empty. However, system log
- files, such as '/var/log/kern.log' or '/var/log/syslog', contains an
+ 'pending'. But they are completely empty. However, system log files,
+ such as '/var/log/kern.log' or '/var/log/syslog', contains an
interesting entries:
● Jan 11 14:56:25 t4 kernel: [ 4161.295639] type=1400
audit(1484142985.517:46): apparmor="DENIED" operation="open" parent=2818
profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/proc/2818/task/"
pid=3253 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000
ouid=1000
● Jan 11 14:56:25 t4 kernel: [ 4161.540727] Chrome_ChildThr[2890]:
segfault at 0 ip b76df673 sp b1efe9f0 error 6 in plugin-
container[b76d8000+42000]
As we know, thanks to the plugin-container, plugins are separated from
the browser process, making it more stable, right? So now if a plugin
crashes, Firefox should remains unharmed. It looks like this is a known
problem (see: 2, 3).
By the way; on Moday, 16 January, Firefox has been closed again - no
action from my side. Log files contain the same entries as above:
● Jan 16 16:39:35 t4 kernel: [14373.711834] type=1400
audit(1484581175.931:48): apparmor="DENIED" operation="open" parent=2532
profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/proc/2532/task/"
pid=3389 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000
ouid=1000
● Jan 16 16:39:36 t4 kernel: [14373.934394] Chrome_ChildThr[3041]:
segfault at 0 ip b76f8673 sp b1efe9f0 error 6 in plugin-
container[b76f1000+42000]
- Anyway, after adding these two rules to the Firefox profile everything
- seems to be OK and there is not DENIED message for "/proc/*/task/"
- entry:
+ Anyway, after adding these two rules to the Firefox profile, everything
+ seems to be OK and there is not DENIED message for "/proc/*/task/" entry
+ anymore (so the first issue is solved):
owner @{PROC}/[0-9]*/task/ r,
owner @{PROC}/[0-9]*/task/* r,
- NOTE: adobe-flash plugin is not activated and is permanently disabled.
- But it's not the second time when AppArmor logs "@{PROC}/*/task/" issue
- (see: 4). Here are some informations about versions:
+ NOTE: This problem occurs when adobe-flash plugin is not activated and
+ is permanently disabled and also when is used/enabled. But it's not the
+ second time when AppArmor logs "@{PROC}/*/task/" issue (see: 4). Here
+ are some informations about versions:
● Firefox: 50.1.0
● Flash: 24.0.0.194ubuntu0.12.04.1
● Linux: 3.2.0-120-generic-pae (3.2.79) i686
● AppArmor: 2.7.102-0ubuntu3.10
● Release: 12.04.5 LTS (via `lsb_release -a` command)
Best regards.
_____________
[1] https://lists.ubuntu.com/archives/precise-changes/2017-January/026047.html
[2] https://bugzilla.mozilla.org/show_bug.cgi?id=1205199
[3] https://bugzilla.redhat.com/show_bug.cgi?id=1253086
[4] https://lists.ubuntu.com/archives/apparmor/2016-December/010422.html
** Description changed:
Hello.
Some days ago, Firefox unexpectedly has been closed after a couple of
hours (mostly viewed: YouTube and some other websites). Next, a dialog
box related to the Mozilla Crash Reporter appeared - with message, that
reporter is disabled (which I did earlier via 'about:config' and
*datareporting.healthreport.service.enabled* key set to _false_) and no
crash report is available even via 'about:crashes' etc.
After this situation two entries appeared in the log files: first
related to the AppArmor and second: plugin-container segfault. By the
way: in the same time there was an update for flash-plugin available
(see: 1).
Anyway, 'LastCrash' file (which can be found in ~/.mozilla/firefox/Crash
Reports/ directory) contains only: 1484142985. Just like all the others
files in this directory. There are also two folders called: 'events' and
'pending'. But they are completely empty. However, system log files,
such as '/var/log/kern.log' or '/var/log/syslog', contains an
interesting entries:
● Jan 11 14:56:25 t4 kernel: [ 4161.295639] type=1400
audit(1484142985.517:46): apparmor="DENIED" operation="open" parent=2818
profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/proc/2818/task/"
pid=3253 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000
ouid=1000
● Jan 11 14:56:25 t4 kernel: [ 4161.540727] Chrome_ChildThr[2890]:
segfault at 0 ip b76df673 sp b1efe9f0 error 6 in plugin-
container[b76d8000+42000]
As we know, thanks to the plugin-container, plugins are separated from
the browser process, making it more stable, right? So now if a plugin
crashes, Firefox should remains unharmed. It looks like this is a known
problem (see: 2, 3).
By the way; on Moday, 16 January, Firefox has been closed again - no
action from my side. Log files contain the same entries as above:
● Jan 16 16:39:35 t4 kernel: [14373.711834] type=1400
audit(1484581175.931:48): apparmor="DENIED" operation="open" parent=2532
profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/proc/2532/task/"
pid=3389 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000
ouid=1000
● Jan 16 16:39:36 t4 kernel: [14373.934394] Chrome_ChildThr[3041]:
segfault at 0 ip b76f8673 sp b1efe9f0 error 6 in plugin-
container[b76f1000+42000]
Anyway, after adding these two rules to the Firefox profile, everything
seems to be OK and there is not DENIED message for "/proc/*/task/" entry
anymore (so the first issue is solved):
owner @{PROC}/[0-9]*/task/ r,
owner @{PROC}/[0-9]*/task/* r,
NOTE: This problem occurs when adobe-flash plugin is not activated and
- is permanently disabled and also when is used/enabled. But it's not the
- second time when AppArmor logs "@{PROC}/*/task/" issue (see: 4). Here
- are some informations about versions:
+ is permanently disabled and also when is used/enabled. Here are some
+ informations about versions etc.:
● Firefox: 50.1.0
● Flash: 24.0.0.194ubuntu0.12.04.1
● Linux: 3.2.0-120-generic-pae (3.2.79) i686
● AppArmor: 2.7.102-0ubuntu3.10
● Release: 12.04.5 LTS (via `lsb_release -a` command)
Best regards.
_____________
[1] https://lists.ubuntu.com/archives/precise-changes/2017-January/026047.html
[2] https://bugzilla.mozilla.org/show_bug.cgi?id=1205199
[3] https://bugzilla.redhat.com/show_bug.cgi?id=1253086
- [4] https://lists.ubuntu.com/archives/apparmor/2016-December/010422.html
--
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to firefox in Ubuntu.
https://bugs.launchpad.net/bugs/1656065
Title:
Firefox and plugin-container (Chrome_ChildThr): segfault at 0 ip
b76df673 sp b1efe9f0 error 6.
Status in firefox package in Ubuntu:
Confirmed
Bug description:
Hello.
Some days ago, Firefox unexpectedly has been closed after a couple of
hours (mostly viewed: YouTube and some other websites). Next, a dialog
box related to the Mozilla Crash Reporter appeared - with message,
that reporter is disabled (which I did earlier via 'about:config' and
*datareporting.healthreport.service.enabled* key set to _false_) and
no crash report is available even via 'about:crashes' etc.
After this situation two entries appeared in the log files: first
related to the AppArmor and second: plugin-container segfault. By the
way: in the same time there was an update for flash-plugin available
(see: 1).
Anyway, 'LastCrash' file (which can be found in
~/.mozilla/firefox/Crash Reports/ directory) contains only:
1484142985. Just like all the others files in this directory. There
are also two folders called: 'events' and 'pending'. But they are
completely empty. However, system log files, such as
'/var/log/kern.log' or '/var/log/syslog', contains an interesting
entries:
● Jan 11 14:56:25 t4 kernel: [ 4161.295639] type=1400
audit(1484142985.517:46): apparmor="DENIED" operation="open"
parent=2818 profile="/usr/lib/firefox/firefox{,*[^s][^h]}"
name="/proc/2818/task/" pid=3253 comm="firefox" requested_mask="r"
denied_mask="r" fsuid=1000 ouid=1000
● Jan 11 14:56:25 t4 kernel: [ 4161.540727] Chrome_ChildThr[2890]:
segfault at 0 ip b76df673 sp b1efe9f0 error 6 in plugin-
container[b76d8000+42000]
As we know, thanks to the plugin-container, plugins are separated from
the browser process, making it more stable, right? So now if a plugin
crashes, Firefox should remains unharmed. It looks like this is a
known problem (see: 2, 3).
By the way; on Moday, 16 January, Firefox has been closed again - no
action from my side. Log files contain the same entries as above:
● Jan 16 16:39:35 t4 kernel: [14373.711834] type=1400
audit(1484581175.931:48): apparmor="DENIED" operation="open"
parent=2532 profile="/usr/lib/firefox/firefox{,*[^s][^h]}"
name="/proc/2532/task/" pid=3389 comm="firefox" requested_mask="r"
denied_mask="r" fsuid=1000 ouid=1000
● Jan 16 16:39:36 t4 kernel: [14373.934394] Chrome_ChildThr[3041]:
segfault at 0 ip b76f8673 sp b1efe9f0 error 6 in plugin-
container[b76f1000+42000]
Anyway, after adding these two rules to the Firefox profile,
everything seems to be OK and there is not DENIED message for
"/proc/*/task/" entry anymore (so the first issue is solved):
owner @{PROC}/[0-9]*/task/ r,
owner @{PROC}/[0-9]*/task/* r,
NOTE: This problem occurs when adobe-flash plugin is not activated and
is permanently disabled and also when is used/enabled. Here are some
informations about versions etc.:
● Firefox: 50.1.0
● Flash: 24.0.0.194ubuntu0.12.04.1
● Linux: 3.2.0-120-generic-pae (3.2.79) i686
● AppArmor: 2.7.102-0ubuntu3.10
● Release: 12.04.5 LTS (via `lsb_release -a` command)
Best regards.
_____________
[1] https://lists.ubuntu.com/archives/precise-changes/2017-January/026047.html
[2] https://bugzilla.mozilla.org/show_bug.cgi?id=1205199
[3] https://bugzilla.redhat.com/show_bug.cgi?id=1253086
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1656065/+subscriptions
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