Messages in this thread Patch in this message | | | Subject | Re: 2.6.15-rc1-mm2 breaks strace | From | Badari Pulavarty <> | Date | Fri, 18 Nov 2005 15:00:35 -0800 |
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On Fri, 2005-11-18 at 22:40 +0100, Bernhard Rosenkraenzer wrote: > 2.6.15-rc1-mm2 works nicely here, aside from the artsd stuff someone else > already reported, and an new issue with strace (last known working: > 2.6.14-mm2) > > [bero@localhost bero]$ strace ls > execve("/bin/ls", ["ls"], [/* 33 vars */]) = 0 > Segmentation fault > [ls output without any traces beyond execve-ing ls displayed here] > > Also interesting: > [bero@localhost bero]$ strace strace ls > execve("/usr/bin/strace", ["strace", "ls"], [/* 20 vars */]) = 0 > Segmentation fault > execve("/bin/ls", ["ls"], [/* 20 vars */]) = 0 > [ls output without any traces displayed here]
Try Christoph's patch.
Thanks, Badari
Looks like 2.6.15-rc1-mm1 has total crap in ptrace_get_task_struct (and it looks like my fault because I sent out a wrong patch).
The patch below should fix it:
Index: linux-2.6/kernel/ptrace.c =================================================================== --- linux-2.6.orig/kernel/ptrace.c 2005-11-18 10:25:35.000000000 +0100 +++ linux-2.6/kernel/ptrace.c 2005-11-18 10:25:54.000000000 +0100 @@ -459,7 +459,7 @@ read_unlock(&tasklist_lock); if (!child) return ERR_PTR(-ESRCH); - return 0; + return child; } #ifndef __ARCH_SYS_PTRACE
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