netdev - Re: [PATCH] drop_monitor: allow more events per second

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20120420130613.GB15966@hmsreliant.think-freely.org>
Date:	Fri, 20 Apr 2012 09:06:13 -0400
From:	Neil Horman <nhorman@...driver.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] drop_monitor: allow more events per second

On Thu, Apr 19, 2012 at 11:25:33PM +0200, Eric Dumazet wrote:
> Le jeudi 19 avril 2012 à 13:28 -0400, Neil Horman a écrit :
> 
> > I spent a good deal of time going through it to make sure it was preempt safe,
> > but its certainly possible that I missed something.  I'll look at it shortly.
> > Thanks for this update though
> > 
> 
> You might want to check this problem as well :
> 
> [   38.352571] BUG: sleeping function called from invalid context at kernel/mutex.c:85
> [   38.352576] in_atomic(): 1, irqs_disabled(): 0, pid: 4415, name: dropwatch
> [   38.352580] Pid: 4415, comm: dropwatch Not tainted 3.4.0-rc2+ #71
> [   38.352582] Call Trace:
> [   38.352592]  [<ffffffff8153aaf0>] ? trace_napi_poll_hit+0xd0/0xd0
> [   38.352599]  [<ffffffff81063f2a>] __might_sleep+0xca/0xf0
> [   38.352606]  [<ffffffff81655b16>] mutex_lock+0x26/0x50
> [   38.352610]  [<ffffffff8153aaf0>] ? trace_napi_poll_hit+0xd0/0xd0
> [   38.352616]  [<ffffffff810b72d9>] tracepoint_probe_register+0x29/0x90
> [   38.352621]  [<ffffffff8153a585>] set_all_monitor_traces+0x105/0x170
> [   38.352625]  [<ffffffff8153a8ca>] net_dm_cmd_trace+0x2a/0x40
> [   38.352630]  [<ffffffff8154a81a>] genl_rcv_msg+0x21a/0x2b0
> [   38.352636]  [<ffffffff810f8029>] ? zone_statistics+0x99/0xc0
> [   38.352640]  [<ffffffff8154a600>] ? genl_rcv+0x30/0x30
> [   38.352645]  [<ffffffff8154a059>] netlink_rcv_skb+0xa9/0xd0
> [   38.352649]  [<ffffffff8154a5f0>] genl_rcv+0x20/0x30
> [   38.352653]  [<ffffffff81549a7e>] netlink_unicast+0x1ae/0x1f0
> [   38.352658]  [<ffffffff81549d76>] netlink_sendmsg+0x2b6/0x310
> [   38.352663]  [<ffffffff8150824f>] sock_sendmsg+0x10f/0x130
> [   38.352668]  [<ffffffff8150abe0>] ? move_addr_to_kernel+0x60/0xb0
> [   38.352673]  [<ffffffff81515f04>] ? verify_iovec+0x64/0xe0
> [   38.352677]  [<ffffffff81509c46>] __sys_sendmsg+0x386/0x390
> [   38.352682]  [<ffffffff810ffaf9>] ? handle_mm_fault+0x139/0x210
> [   38.352687]  [<ffffffff8165b5bc>] ? do_page_fault+0x1ec/0x4f0
> [   38.352693]  [<ffffffff8106ba4d>] ? set_next_entity+0x9d/0xb0
> [   38.352699]  [<ffffffff81310b49>] ? tty_ldisc_deref+0x9/0x10
> [   38.352703]  [<ffffffff8106d363>] ? pick_next_task_fair+0x63/0x140
> [   38.352708]  [<ffffffff8150b8d4>] sys_sendmsg+0x44/0x80
> [   38.352713]  [<ffffffff8165f8e2>] system_call_fastpath+0x16/0x1b
> 
> 
> 

Will do, thanks!
Neil

--
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