From: Joerg Hoh <joerg@devone.org>
To: linux-kernel@vger.kernel.org
Subject: 2.6.0test5: ptrace() broken on alpha
Date: Sat, 4 Oct 2003 18:11:00 +0200 [thread overview]
Message-ID: <20031004161100.GC3573@hydra.joerghoh.de> (raw)
While debugging screen we found a strange problem; you can reproduce it
with
strace -tt fo sh -c "sleep 1; sleep 1"
The strace hangs (like here)
[strippd]
17:07:46.400332 getpgrp() = 302
17:07:46.400691 rt_sigaction(SIGCHLD, {0x120040210, [], 0}, {SIG_DFL}, 8, 0xffffffffffffffff) = 0
17:07:46.401228 osf_sigprocmask(0x1, 0, 0x1200f8508) = 0
17:07:46.401632 osf_sigprocmask(0x1, 0, 0x1200f8508) = 0
17:07:46.402027 osf_sigprocmask(0x1, 0, 0x1200f8508) = 0
17:07:46.402833 stat(".", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
17:07:46.403283 stat("/usr/local/sbin/sleep", 0x11ffff620) = -1 ENOENT (No such file or directory)
17:07:46.403661 stat("/usr/local/bin/sleep", 0x11ffff620) = -1 ENOENT (No such file or directory)
17:07:46.404044 stat("/usr/sbin/sleep", 0x11ffff620) = -1 ENOENT (No such file or directory)
17:07:46.404374 stat("/usr/bin/sleep", 0x11ffff620) = -1 ENOENT (No such file or directory)
17:07:46.404733 stat("/sbin/sleep", 0x11ffff620) = -1 ENOENT (No such file or directory)
17:07:46.405065 stat("/bin/sleep", {st_mode=S_IFREG|0755, st_size=20608, ...}) = 0
17:07:46.405428 stat("/bin/sleep", {st_mode=S_IFREG|0755, st_size=20608, ...}) = 0
17:07:46.406012 osf_sigprocmask(0x1, 0x80002, 0x11ffff7d0) = 0
17:07:46.406361 fork() = 304
17:07:46.415170 osf_sigprocmask(0x3, 0, 0) = 524290
17:07:46.415639 osf_sigprocmask(0x1, 0x80000, 0x11ffff8f0) = 0
17:07:46.415920 osf_sigprocmask(0x3, 0, 0) = 524288
17:07:46.416151 osf_sigprocmask(0x1, 0x80000, 0x11ffff8f0) = 0
17:07:46.416376 rt_sigaction(SIGINT, {0x12003ec60, [], 0}, {SIG_DFL}, 8, 0xffffffffffffffff) = 0
17:07:46.416820 wait4(-1,
It seems the child has been forked but hasn't done anything further (no
exit()); (btw screen has a race condition, first forking and then
registering the signal handler).
The problem occurs also on 2.6.0test6
Joerg
--
...Wenn man sich bei NetBSD auf eines verlassen kann, dann: Egal, WAS[...]
man updated, mplayer hat mit Sicherheit dependencies drauf.
Rene Schickbauer, news:2591532.ZKZXAUW3eG@gandalf.grumpfzotz.org
reply other threads:[~2003-10-04 16:10 UTC|newest]
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