2.6.33.6-rt26
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From: Dhaval Giani on 13 Jul 2010 13:00 Hi, > Enjoy ! > I hit this with rt26. (Quite possible is on vanilla as well, will build a kernel soemtime soon and try) ======================================================= [ INFO: possible circular locking dependency detected ] 2.6.33.6-rt26 #36 ------------------------------------------------------- iperf/1629 is trying to acquire lock: (slock-AF_INET){+.+...}, at: [<ffffffff8135a4fa>] release_sock+0x30/0x108 but task is already holding lock: (&lock->lock){+.+...}, at: [<ffffffff813cd6cc>] ipt_do_table+0x118/0x650 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&lock->lock){+.+...}: [<ffffffff810697e7>] lock_acquire+0xd6/0xfa [<ffffffff813fcfaa>] rt_spin_lock+0x31/0x38 [<ffffffffa00ba8ef>] nf_nat_get_offset+0x42/0x6b [nf_nat] [<ffffffff8138b2ba>] tcp_packet+0x659/0xd5b [<ffffffff81387eb9>] nf_conntrack_in+0x445/0x4fc [<ffffffff813ca933>] ipv4_conntrack_local+0x3b/0x44 [<ffffffff81384c22>] nf_iterate+0x41/0x84 [<ffffffff81384cd8>] nf_hook_slow+0x73/0xdb [<ffffffff813970b4>] nf_hook_thresh.clone.0+0x3c/0x45 [<ffffffff81397136>] __ip_local_out+0x79/0x7b [<ffffffff81397149>] ip_local_out+0x11/0x22 [<ffffffff81397407>] ip_push_pending_frames+0x2ad/0x30b [<ffffffff81398a41>] ip_send_reply+0x21a/0x259 [<ffffffff813acdf1>] tcp_v4_send_reset+0x1c8/0x1eb [<ffffffff813b0367>] tcp_v4_rcv+0x500/0x661 [<ffffffff8139400a>] ip_local_deliver_finish+0x14d/0x1c3 [<ffffffff813940f2>] ip_local_deliver+0x72/0x7c [<ffffffff81393ac3>] ip_rcv_finish+0x31a/0x346 [<ffffffff81393d29>] ip_rcv+0x23a/0x268 [<ffffffff81366862>] netif_receive_skb+0x3fa/0x424 [<ffffffffa023fb41>] br_handle_frame_finish+0x105/0x13d [bridge] [<ffffffffa023fd08>] br_handle_frame+0x18f/0x1a7 [bridge] [<ffffffff81366792>] netif_receive_skb+0x32a/0x424 [<ffffffff813669d4>] napi_skb_finish+0x24/0x3b [<ffffffff81366e83>] napi_gro_receive+0x2a/0x2f [<ffffffff812d03b9>] sky2_poll+0x86e/0xaef [<ffffffff81366fcc>] net_rx_action+0xa3/0x1f1 [<ffffffff81044a02>] run_ksoftirqd+0x14e/0x254 [<ffffffff8105975f>] kthread+0x88/0x90 [<ffffffff81009844>] kernel_thread_helper+0x4/0x10 -> #0 (slock-AF_INET){+.+...}: [<ffffffff8106941a>] __lock_acquire+0x9f1/0xce8 [<ffffffff810697e7>] lock_acquire+0xd6/0xfa [<ffffffff813fcfaa>] rt_spin_lock+0x31/0x38 [<ffffffff8135a4fa>] release_sock+0x30/0x108 [<ffffffff813a012a>] tcp_recvmsg+0x8b8/0x9a3 [<ffffffff81359864>] sock_common_recvmsg+0x37/0x48 [<ffffffff81357178>] __sock_recvmsg+0x6d/0x78 (Just run iperf as server and test it from another system) thanks, Dhaval -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Barry Song on 19 Jul 2010 02:40
Hi Thomas, Just want to know when there will be released RT patch for 2.6.34? We have some tasks to patch RT to our local 2.6.34 tree. Thanks Barry On Tue, Jul 13, 2010 at 11:54 PM, Thomas Gleixner <tglx(a)linutronix.de> wrote: > We are pleased to announce the next update to our new preempt-rt > series. > > Changes from 2.6.33.5-rt23 to 2.6.33.5-rt24: > > 42edbcb: gianfar: Fix TX ring processing on SMP machines > faf3581: timer_stats: Convert table_lock to raw_spin_lock > 654e404: hvc_console: Fix race between hvc_close and hvc_remove > 09fd768: hvc_console: Fix race between hvc_close and hvc_remove > ea2d2a0: perf: Fix errors path in perf_output_begin() > 60bd946: KEYS: find_keyring_by_name() can gain access to a freed keyring > b5ac516: tracing: Update the comm field in the right variable in update_max_tr > 77cb7c1: lockdep: Reduce stack_trace usage > cee9ee0: powerpc: Disable sparse irq for RT > c7dec16: powerpc: Enable interrupts in do_signal() > > Changes from 2.6.33.5-rt24 to 2.6.33.5-rt25: > > ec646ea: vfs: Revert the scalability patches > > Changes from 2.6.33.5-rt26 to 2.6.33.6-rt26: > > 7e1af11: Merge git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-2.6.33.y > > Bulk of changes comes from the stable tree and from the big revert of > the VFS scalability patches. They looked promising, but the nasty > details bit us hard. We'll revisit them later. > > There are some pending issues: > - rtc_lock suspend/resume (working on a patch) > - futex requeue_pi (patch available, needs testing/confirmation) > - powerpc64 oddities (patch available, needs rework) > > Download locations: > > http://www.kernel.org/pub/linux/kernel/projects/rt/ > > Git release branch: > git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/2.6.33 > > Gitweb: > http://git.kernel.org/?p=linux/kernel/git/tip/linux-2.6-tip.git;a=shortlog;h=rt/2.6.33 > > Information on the RT patch can be found at: > > http://rt.wiki.kernel.org/index.php/Main_Page > > To build the 2.6.33.6-rt26 tree, the following patches should be > applied: > > http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.33.6.tar.bz2 > http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.33.6-rt26.bz2 > > Enjoy ! > > tglx > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo(a)vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |