canvas 绘制跨域图片,导出为图片的时候会出现 Uncaught DOMException: Failed to execute 'toDataURL' on 'HTMLCanvasElement': Tainted
k8s-master01 ~]# kubectl taint node k8s-master01 node-role.kubernetes.io/master="":NoSchedulenode/k8s-master01 tainted...k8s-master01 ~]# kubectl taint node k8s-master02 node-role.kubernetes.io/master="":NoSchedulenode/k8s-master02 tainted...k8s-master01 ~]# kubectl taint node k8s-master03 node-role.kubernetes.io/master="":NoSchedulenode/k8s-master03 tainted...k8s-master01 ~]# kubectl taint node k8s-master03 node-role.kubernetes.io/master="":NoExecutenode/k8s-master03 tainted...MS4wLjABAAAAeqOrhjsoRZSj7iBJbjLJyMwYT5D0mLOgCoo4pEmpr4A/CSDN、GitHub、知乎、开源中国、思否、掘金、简书、腾讯云、今日头条、个人博客、全网可搜《小陈运维》文章主要发布于微信公众号:《Linux
$a; echo $a, ""; // Warning: main() [echo]: Attempt to echo a string that might be tainted in /...12 print $$var; echo ""; // Warning: main() [print]: Attempt to print a string that might be tainted...might be tainted 也就是有污点内容的意思。 大部分输出或者操作数据库之类的函数都会报出这些警告,这些内容的具体信息可以在官方文档中查询到。...var_dump(is_tainted($var)); // bool(false) echo ""; var_dump(is_tainted($output)); // bool(true...; echo $newOutput, ""; // Warning: main() [echo]: Attempt to echo a string that might be tainted
AND ESP, …,若在执行后(bx_instr_after_execution)ESP发生递减,则调用taint::set_taint(new_rsp, length, /*tainted=*/true...系统配置下的地址: pool_alloc_prologues = 0x1E0590 pool_alloc_epilogues = 0x1E07AD 污点清除 当栈顶弹出或者堆块调用free函数前序指令(Linux...= globals::rsp_locked.end()) { return; } taint::set_taint(lin, len, /*tainted=*/false); } 污点传播...= 0; taint::access_type type = taint::check_taint(pcpu, src, size, &tainted_offset); if (type...== taint::METADATA_MARKER_MISMATCH) { taint::set_taint(src, size, /*tainted=*/false); } else
void); 1、使用这个功能时需要将内核配置勾选上; make menuconfig -> kernel hacking--> kernel debug 2、在函数中使用: 1 #include 2 #include 3 #include 4 #include 5 6...module\n"); 18 } 19 20 module_init(hello_init); 21 module_exit(hello_exit); 3、需要加入的头文件: 1 #include <linux..., device number 11 3 [ 5246.942980] dump_stack start 4 [ 5246.942985] Pid: 3438, comm: insmod Not tainted
/kernel.h> #include #include #define MAX_SYMBOL_LEN 64 static char...ptrval____), pc = 0xffff0000080d2c98, pstate = 0x80000005 [ 19.913657] CPU: 0 PID: 1358 Comm: udevd Tainted...post_handler: p->addr = 0x(____ptrval____), pstate = 0x80000005 [ 19.929361] CPU: 0 PID: 1358 Comm: udevd Tainted...PREEMPT SMP [ 19.076924] Modules linked in: kprobe_example(O) [ 19.077693] CPU: 0 PID: 1387 Comm: sh Tainted...post_handler: p->addr = 0x(____ptrval____), pstate = 0x80000005 [ 58.882960] CPU: 1 PID: 1388 Comm: sh Tainted
Node节点的污点 [root@k8s-master ~]#kubectl taint nodes k8s-node1 check1=yuanzhang1:NoExecute node/k8s-node1 tainted...[root@k8s-master ~]#kubectl taint nodes k8s-node2 check2=yuanzhang2:NoExecute node/k8s-node2 tainted...[root@k8s-master ~]#kubectl taint nodes k8s-node3 check3=yuanzhang3:NoExecute node/k8s-node3 tainted
自然是Linux Kernel了, 本篇来看下。...exitcode=0x0000ff00 [ 2.261976] CPU: 0 PID: 1 Comm: hello Not tainted 5.15.74 #1 [ 2.262348] Hardware
二、集群情况 RocketMQ版本使用4.5.2,4主4从模式 集群tps在8000左右 单节点配置32C/128G/1.7T 其中2从部署在阿里云ECS上,即一个集群6台ECS 内核版本:Linux...failure. order:0, mode:0x20 2020-03-16T17:56:07.505719+08:00 VECS0xxxx kernel: Pid: 12845, comm: java Not tainted...blocked for more than 120 seconds. 1657 2020-04-01T17:19:52.464266+08:00 VECS0xxx kernel: Not tainted...杜恒大佬有提Linux内核2.6的操作系统有bug会导致类似情况。回想一下原东家的RocketMQ集群运行以来从未出现过如此诡异现象,虽让好友将内核版本发与我,内核版本为3.10。...Linux version 3.10.0-1062.4.1.el7.x86_64 (mockbuild@kbuilder.bsys.centos.org) (gcc version 4.8.5 20150623
漏洞是由对于mbuf_copydata的调用(包含用户控制的大小参数)引起的,因此只要写一个简单的查询脚本即可发现类似错误: ** * @name mbuf copydata with tainted...* @kind path-problem * @problem.severity warning * @id apple-xnu/cpp/mbuf-copydata-with-tainted-size...DataFlow::PathNode sink where cfg.hasFlowPath(source, sink) select sink, source, sink, "m_copydata with tainted...因为LGTM使用Linux流程构建项目,但XNU只能在苹果电脑上构建。即使在苹果电脑上,构建XNU也非常不容易。
问题背景:一次启动本地应用,两分钟过后自动退出,通过日志并未发现任何异常状况,莫名其妙的应用就自动被杀掉了; 1、linux通过top查看java应用内存和cpu都不高,只是过一会突然就没了; 2、通过应用日志并未查到有任何异样...73a35980233979bb67f20700c76d77805de6ced7cfd18de836238a7bdae7c1dd mems_allowed=0 [16949523.942918] CPU: 4 PID: 310033 Comm: java Tainted...Killed process 182650 (java) total-vm:16705124kB, anon-rss:2079844kB, file-rss:22020kB 以上信息可以看到内存溢出被linux...flags 发现java应用的启动预申请内存达到了10G; 5、通过free或者vmstat查看剩余内存大小只有10G了,内核检测到系统内存不足、挑选并杀掉某个进程的过程可以参考内核源代码 linux
问题背景:一次启动本地应用,两分钟过后自动退出,通过日志并未发现任何异常状况,莫名其妙的应用就自动被杀掉了; 解决思路: 1、linux通过top查看java应用内存和cpu都不高,只是过一会突然就没了...73a35980233979bb67f20700c76d77805de6ced7cfd18de836238a7bdae7c1dd mems_allowed=0 [16949523.942918] CPU: 4 PID: 310033 Comm: java Tainted...Killed process 182650 (java) total-vm:16705124kB, anon-rss:2079844kB, file-rss:22020kB 以上信息可以看到内存溢出被linux...发现java应用的启动预申请内存达到了10G; image.png 5、通过free或者vmstat查看剩余内存大小只有10G了,内核检测到系统内存不足、挑选并杀掉某个进程的过程可以参考内核源代码 linux...points 越小越不容易被杀) 7、oom_score_adj设置值范围-1000 到 1000范围区间,设置举例:当某一个应用内存申请占用1G时,设置oom_score_adj=-500时,实际linux
Mar 26 08:13:01 localhost kernel: Tainted: P --------------- 2.6.32-431.el6.x86_64 #1 Mar 26 08:13:01...noalloc_get_block_write+0x0/0x60 [ext4] linux会设置40%的可用内存用来做系统cache,当flush数据时这40%内存中的数据由于和IO同步问题导致超时(120s...sysctrl.conf vm.dirty_background_ratio = 5 vm.dirty_ratio = 10 参见:http://www.blackmoreops.com/2014/09/22/linux-kernel-panic-issue-fix-hung_task_timeout_secs-blocked
,kubernetes.io/arch=amd64,kubernetes.io/hostname=ubuntud,kubernetes.io/os=linux,microk8s.io/cluster=true...,kubernetes.io/arch=amd64,kubernetes.io/hostname=ubuntuc,kubernetes.io/os=linux,microk8s.io/cluster=true...,kubernetes.io/arch=amd64,kubernetes.io/hostname=ubuntub,kubernetes.io/os=linux,microk8s.io/cluster=true...kubectl taint node ubuntuc node_type=worker:NoExecute node/ubuntuc tainted 再观察 kubectl get pod --watch...kubectl taint node ubuntub node_type=worker:NoExecute node/ubuntub tainted 再观察 kubectl get pod --watch
要理解Source和Tainted Source之间的区别,请看下面的代码: var name = document.URL.indexOf("name=") + 5;...<- TAINTED SOURCE document.write("Welcome " + document.URL.substring(name, document.URL.length...document.cookie) 然后通过分析页面代码: script> var pos = document.URL.indexOf("foo=") + 4; <- TAINTED...document.URL.indexOf("name=") + 5; var name = document.URL.substring(pos, document.URL.length); <- TAINTED
aarch32 linux4.14 最近遇到一个kworker问题,callstack如下,线程adas的陷入kernel space后会schedule_work调用一个while(1)的worker...; return true; } [ 0.003251] create kworker 0:0 [ 0.003266] CPU: 0 PID: 1 Comm: swapper/0 Not tainted...secondary CPUs ... [ 0.150389] create kworker 1:0 [ 0.150407] CPU: 0 PID: 1 Comm: swapper/0 Not tainted...variant 9 rev 4 [ 0.178840] create kworker u4:1 [ 0.178859] CPU: 0 PID: 5 Comm: kworker/u4:0 Not tainted...kthread) from [] (ret_from_fork+0x14/0x24) [ 0.199923] CPU: 0 PID: 3 Comm: kworker/0:0 Not tainted
Linux内核提供死锁调试模块Lockdep,跟踪每个锁的自身状态和各个锁之间的依赖关系,经过一系列的验证规则来确保锁之间依赖关系是正确的。 2....detected ]---------------------------------------------------------------检测到的死锁描述:递归死锁类型 4.0.0+ #87 Tainted...CPU: 0 PID: 658 Comm: insmod Tainted: G O 4.0.0+ #87 Hardware name: ARM-Versatile Express [...dead4ead, .owner: insmod/658, .owner_cpu: 0-----------发生死锁的是hack_spinB CPU: 0 PID: 658 Comm: insmod Tainted...参考文档 《Linux 死锁检测模块 Lockdep 简介》 内核帮助文档:Documentation/locking/
CPU: 15 PID: 23529 Comm: lvm Tainted: G D W E 4.14.11 #1 task: ffff91a382b72e00 task.stack: ffffb3928ade8000...dm_ctl_ioctl+Oxa/Ox10 do_vfs_ioctl+0x9f/Ox5f0 Sys_ioctl+0x74/0x80 CPU: 25 PIO: 2084 Comm: kworker/u64:6 Tainted...那么,执行:addr2line -e vmlinux -a 0xffffffff8162c458 可以得到出错的函数就是include/linux/list.h:105 ?
Node-Selectors: beta.kubernetes.io/os=linux Tolerations: :NoSchedule :NoExecute...: # kubectl taint nodes node01.linux.io node-type=production:NoSchedule node "node01.linux.io" tainted...node-type=production:PreferNoSchedule node "node01.linux.io" tainted 删除某污点,仍然通过kubectl taint命令进行,但要使用如下的命令格式...taint nodes node01.linux.io node-type- node "node01.linux.io" untainted 删除节点上的全部污点信息,通过kubectl patch..."node01.linux.io" patched 节点污点的变动会影响到新建Pod对象的调度结果,而且使用NoExecute进行标识时,还会影响到节点上现有的Pod对象。
predicate isSink(DataFlow::Node sink) { sink instanceof EvalJavaScriptSink } 进化只是专注于获得正确的结果,就像tainted...在tainted + foo当它是一个流程的最后一步。...* * There's an additional taint step specified in order to catch * `tainted` in sinks like `tainted...* * There's an additional taint step specified in order to catch * `tainted` in sinks like `tainted
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