[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.6-618-g8f54d98

[fche at sourceware dot org]

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- Log -----------------------------------------------------------------
commit 8f54d98f98c01698d1cad77609b0a7898450559f
Author: Frank Ch. Eigler <fche@redhat.com>
Date:   Sun Dec 18 16:00:55 2011 -0500

    PR13514: don't printk on transport out-of-memory
    
    That can exacerbate the problem, as in this warning:
    
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355493] BUG: scheduling while atomic: syslogd/0x00000002/5499, CPU#0
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355495] INFO: lockdep is turned off.
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355497] Modules linked in: stap_8f6127053d4df9e6cb23117ca0e09ef6_159315 xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 ip_tables x_tables netconsole configfs hidp nfs nfs_acl auth_rpcgss rfcomm l2cap crc16 bluetooth rfkill lockd sunrpc ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp cxgb3i cxgb3 mdio libiscsi_tcp libiscsi scsi_transport_iscsi loop dm_multipath scsi_dh video output sbs sbshc battery ac lp sg sr_mod cdrom snd_seq_dummy parport_pc tpm_tis parport floppy tpm snd_seq_oss tpm_bios serio_raw snd_seq_midi_event snd_seq button snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm 8139too snd_timer snd 8139cp soundcore snd_page_alloc mii pcspkr dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod pata_acpi ata_piix ata_generic libata sd_mod crc_t10dif scsi_mod ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd [last unloaded: stap_3dd46547b1387d9f45df4746d5032b29_1810]
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355566] irq event stamp: 1071890
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355567] hardirqs last  enabled at (1071889): [<ffffffff8137c5cb>] _raw_spin_unlock_irqrestore+0x44/0x79
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355574] hardirqs last disabled at (1071890): [<ffffffff8137a494>] schedule+0xf/0x25
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355578] softirqs last  enabled at (0): [<ffffffff81043d8e>] copy_process+0x5e3/0x139b
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355582] softirqs last disabled at (0): [<(null)>] (null)
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355586] Pid: 5499, comm: syslogd Tainted: G        W   2.6.33.9-rt31.64.el5rtdebug #1
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355587] Call Trace:
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355592]  [<ffffffff81072253>] ? print_irqtrace_events+0xa0/0xa4
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355597]  [<ffffffff8103d4ce>] __schedule_bug+0x7a/0x7f
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355600]  [<ffffffff81379c18>] __schedule+0x85/0x805
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355604]  [<ffffffff810b7556>] ? time_hardirqs_off+0x1b/0x2f
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355607]  [<ffffffff8137a494>] ? schedule+0xf/0x25
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355610]  [<ffffffff8137a499>] schedule+0x14/0x25
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355613]  [<ffffffff810a0d93>] synchronize_irq+0xbd/0xd7
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355617]  [<ffffffff81062898>] ? autoremove_wake_function+0x0/0x3d
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355619]  [<ffffffff810a0397>] ? disable_irq_nosync+0x5d/0x66
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355622]  [<ffffffff810a0f7d>] disable_irq+0x31/0x36
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355630]  [<ffffffffa017db40>] cp_poll_controller+0x19/0x31 [8139cp]
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355633]  [<ffffffff812edae3>] netpoll_poll+0x4e/0x3b8
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355636]  [<ffffffff8137bc52>] ? rt_spin_unlock+0x35/0x3a
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355640]  [<ffffffff812d57e2>] ? skb_dequeue+0x21/0x52
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355643]  [<ffffffff812ee0e6>] find_skb+0x7d/0xa6
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355646]  [<ffffffff812ee154>] netpoll_send_udp+0x34/0x1ee
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355651]  [<ffffffffa002e1db>] write_msg+0x89/0xc8 [netconsole]
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355654]  [<ffffffff81045f0b>] __call_console_drivers+0xc8/0xec
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355657]  [<ffffffff81045f8f>] _call_console_drivers+0x60/0x64
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355660]  [<ffffffff8104647a>] release_console_mutex+0x129/0x1a4
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355664]  [<ffffffff81046b57>] vprintk+0x3af/0x3f8
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355667]  [<ffffffff810738b3>] ? print_lock_contention_bug+0x1b/0xd5
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355671]  [<ffffffff81046c0c>] printk+0x6c/0x6e
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355674]  [<ffffffff8137c5c4>] ? _raw_spin_unlock_irqrestore+0x3d/0x79
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355677]  [<ffffffff8137c5f2>] ? _raw_spin_unlock_irqrestore+0x6b/0x79
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355680]  [<ffffffff8137b0bd>] ? rt_spin_lock_slowunlock+0x53/0x7d
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355684]  [<ffffffff8107b29f>] ? rt_spin_lock_fastunlock+0x2a/0x2c
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355687]  [<ffffffff8137bc52>] ? rt_spin_unlock+0x35/0x3a
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355695]  [<ffffffffa067aa12>] ? _stp_ctl_send+0x102/0x22c [stap_8f6127053d4df9e6cb23117ca0e09ef6_159315]
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355702]  [<ffffffffa067a9e6>] _stp_ctl_send+0xd6/0x22c [stap_8f6127053d4df9e6cb23117ca0e09ef6_159315]
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355709]  [<ffffffffa067b2c5>] function_system+0x56/0x6a [stap_8f6127053d4df9e6cb23117ca0e09ef6_159315]
    Dec 18 15:07:01 vm-rhel5-64 kernel: [182989.355716]  [<ffffffffa069dbdd>] probe_2002+0xc0/0x19e [stap_8f6127053d4df9e6cb23117ca0e09ef6_159315]
    Dec 18 15:07:02 vm-rhel5-64 kernel: [182989.355721]  [<ffffffff81054e32>] ? sys_alarm+0x1/0x12
    
    * transport/control.c (_stp_ctl_send): Quietly resign to fate, if we're OOM.

-----------------------------------------------------------------------

Summary of changes:
 runtime/transport/control.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)


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