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31403966b6
Fixes this bug report: BUG: unable to handle kernel NULL pointer dereference at 0000000000000518 IP: [<ffffffff81080112>] __lock_acquire+0x62/0x1d40 PGD 1b226f067 PUD 1b2241067 PMD 0 Oops: 0000 [#1] SMP CPU 0 Modules linked in: ib_srpt scst_vdisk crc32c libcrc32c scst netconsole configfs snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device af_packet rdma_ucm rdma_cm iw_cm ib_addr ib_ipoib ib_cm ib_sa ib_uverbs ib_umad mlx4_ib ib_mad ib_core microcode cpufreq_co nservative cpufreq_userspace cpufreq_powersave acpi_cpufreq mperf dm_mod snd_hda_codec_hdmi snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_timer snd intel_agp sr_mod mlx4_core sg intel_gtt cdrom i2c_i801 agpgart soundcore i2c_co re snd_page_alloc pcspkr button uhci_hcd ehci_hcd sd_mod crc_t10dif usbcore edd ext3 mbcache jbd fan ata_generic ata_piix pata_marvell ahci libahci libata scsi_mod thermal processor thermal_sys hwmon Pid: 4, comm: kworker/0:0 Not tainted 3.1.5-debug+ #1 System manufacturer P5Q DELUXE/P5Q DELUXE RIP: 0010:[<ffffffff81080112>] [<ffffffff81080112>] __lock_acquire+0x62/0x1d40 RSP: 0018:ffff8801b50c9950 EFLAGS: 00010046 RAX: 0000000000000046 RBX: 0000000000000518 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000518 RBP: ffff8801b50c9a40 R08: 0000000000000002 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801b50aae20 R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8801bfc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000518 CR3: 00000001b1a4d000 CR4: 00000000000406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process kworker/0:0 (pid: 4, threadinfo ffff8801b50c8000, task ffff8801b50aae20) Stack: 0000000000000006 0000000000000001 ffffffff8191ca20 ffff8801b50c99b8 ffffffff81082cae 0000000000000003 ffff8801b50aae20 0000000000000003 0000000000000002 0000000000000000 ffff8801b50c9aa0 0000000000000046 Call Trace: [<ffffffff81082cae>] ? mark_held_locks+0x6e/0x130 [<ffffffff810823c5>] lock_acquire+0x95/0x130 [<ffffffff8103d4ee>] ? try_to_wake_up+0x2e/0x2b0 [<ffffffff813d618c>] ? _raw_spin_lock_irqsave+0x1c/0x60 [<ffffffff813d61bb>] _raw_spin_lock_irqsave+0x4b/0x60 [<ffffffff8103d4ee>] ? try_to_wake_up+0x2e/0x2b0 [<ffffffff8103d4ee>] try_to_wake_up+0x2e/0x2b0 [<ffffffff8103d7a5>] wake_up_process+0x15/0x20 [<ffffffffa0463fda>] srpt_set_ch_state_to_disc+0x5a/0x80 [ib_srpt] [<ffffffffa0464016>] __srpt_close_ch+0x16/0xa0 [ib_srpt] [<ffffffffa04698e6>] srpt_cm_req_recv+0x806/0xbe0 [ib_srpt] [<ffffffffa046ac0d>] srpt_cm_handler+0x7d/0x160 [ib_srpt] [<ffffffffa0315c85>] cm_process_work+0x25/0x110 [ib_cm] [<ffffffffa031716c>] cm_req_handler+0x67c/0xa00 [ib_cm] [<ffffffffa031761d>] cm_work_handler+0x12d/0x1480 [ib_cm] [<ffffffff810629c8>] process_one_work+0x198/0x520 [<ffffffff81062959>] ? process_one_work+0x129/0x520 [<ffffffffa03174f0>] ? cm_req_handler+0xa00/0xa00 [ib_cm] [<ffffffff810646aa>] worker_thread+0x16a/0x350 [<ffffffff81064540>] ? manage_workers+0x250/0x250 [<ffffffff81069656>] kthread+0x96/0xa0 [<ffffffff813e0b74>] kernel_thread_helper+0x4/0x10 [<ffffffff813d6d9d>] ? retint_restore_args+0xe/0xe [<ffffffff810695c0>] ? __init_kthread_worker+0x70/0x70 [<ffffffff813e0b70>] ? gs_change+0xb/0xb Code: 25 00 b6 00 00 4c 89 7d f8 85 c9 48 89 fb 45 0f 45 f0 41 89 f5 85 d2 0f 84 44 0d 00 00 8b 05 5a 3a 6f 00 85 c0 0f 84 c6 01 00 00 8b 03 ba 01 00 00 00 48 3d c0 75 7b 81 44 0f 44 f2 41 83 fd RIP [<ffffffff81080112>] __lock_acquire+0x62/0x1d40 RSP <ffff8801b50c9950> CR2: 0000000000000518 ---[ end trace efbb413a57b805cb ]--- git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@4020 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This is the SCST development repository. It contains not a single project SCST as one can think, but a number of them, which are divided as the following: 1. SCST core in scst/ subdirectory 2. Administration utility for SCST core scstadmin in scstadmin/ 3. Target drivers in own subdirectories qla2x00t/, iscsi-scst/, etc. 4. User space programs in usr/ subdirectory, like fileio_tgt. 5. Some various docs in doc/ subdirectory. Those subprojects are in most cases independent from each other, although some of them depend from the SCST core. They put in the single repository only to simplify their development, they are released independently. Thus, use "make all" only if you really need to build everything. Otherwise build only what you need, like for iSCSI-SCST: make scst scst_install iscsi iscsi_install For more information about each subproject see their README files. Vladislav Bolkhovitin <vst@vlnb.net>, http://scst.sourceforge.net