| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <657221.87331.qm@web28608.mail.ukl.yahoo.com>
Date: Sat, 9 May 2009 19:55:04 +0000 (GMT)
From: Panadero Pizza <panadero_pizza@...oo.es>
To: netdev@...r.kernel.org
Subject: Putting for discussion "__qdisc_run" bug - strange application-dependant error
Hello netdev group,
I would like to put for discussion, if a bug in the __qdsic_run function could explain the problem I have described in my post "Kernel networking problem (>=2.6.24.7)" two days ago.
"__qdisc_run" is the last common function in the kernel traces I receive for the kernels:
2.6.24.7
2.6.27.12
with a multi-threaded software, using fputc, putc, puts - calls, mixed with fflush()-calls on a remote file, opened on a cifs-handle. (Errors occur extremely seldom, although the software is running for hours - day after day)
I don't receive the error with other standard software (e.g. "dd"), writing to a file on the same cifs-handle/session and more interesting:
The error does not occur with the afore-mentioned multi-threaded program (or any other software), using a
2.6.16.62
kernel.
I have found that from 2.6.24.x on, the __qdisc_run function has been made preemptible and this feature has been enabled for the realization of the afore-said 2.6.24.7 and 2.6.27.12 kernels.
Though 2.6.16.62 solves my problem, I am offering participation in finding a solution for this (which should be fixed, if it is a kernel bug).
Best regards,
David
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists