inappropriate module initialization/cleanup
inappropriate module initialization/cleanup when parameters test_irq* or use_msi are used
[root@sdapc009 ~]# modprobe spec test_irq=1
[root@sdapc009 ~]# dmesg -c
[ 0.000000] Linux version 3.10.0-327.4.5.el7.x86_64 (builder@kbuilder.dev.centos.org) (gcc version 4.8.3 20140911 (Red Hat 4.8.3-9) (GCC) ) #1 SMP Mon Jan 25 22:07:14 UTC 2016
...
[ 320.873923] fmc: module verification failed: signature and/or required key missing - tainting kernel
[ 320.897785] spec 0000:03:00.0: probe for device 0003:0000
[ 320.948298] spec 0000:03:00.0: got file "fmc/spec-init.bin", 1485236 (0x16a9b4) bytes
[ 321.139869] spec 0000:03:00.0: FPGA programming successful
[ 321.556011] spec 0000:03:00.0: received interrupt 16
[ 321.556015] spec 0000:03:00.0: Interrupts work as expected
[ 321.556020] spec 0000:03:00.0: mezzanine 0
[ 321.556022] Manufacturer: CERN
[ 321.556024] Product name: FmcAdc100m14b4cha
[root@sdapc009 ~]# rmmod spec
[root@sdapc009 ~]# modprobe spec use_msi=1
[root@sdapc009 ~]# dmesg -c
[ 452.371586] spec 0000:03:00.0: probe for device 0003:0000
[ 452.371909] spec 0000:03:00.0: irq 32 for MSI/MSI-X
[ 452.372593] spec 0000:03:00.0: got file "fmc/spec-init.bin", 1485236 (0x16a9b4) bytes
[ 452.564164] spec 0000:03:00.0: FPGA programming successful
[ 452.931262] spec 0000:03:00.0: mezzanine 0
[ 452.931269] Manufacturer: CERN
[ 452.931270] Product name: FmcAdc100m14b4cha
[root@sdapc009 ~]# rmmod spec
[root@sdapc009 ~]# modprobe spec test_irq=1
Message from syslogd@sdapc009 at Feb 2 18:51:12 ...
kernel:do_IRQ: 1.224 No irq handler for vector (irq -1)
[root@sdapc009 ~]# dmesg -c
[ 485.935712] spec 0000:03:00.0: remove
[ 491.951932] spec 0000:03:00.0: probe for device 0003:0000
[ 491.952742] spec 0000:03:00.0: got file "fmc/spec-init.bin", 1485236 (0x16a9b4) bytes
[ 492.144313] spec 0000:03:00.0: FPGA programming successful
[ 492.511266] do_IRQ: 1.224 No irq handler for vector (irq -1)
[ 492.561012] spec 0000:03:00.0: received interrupt 32
[ 492.561017] spec 0000:03:00.0: Interrupts work as expected
[ 492.561021] spec 0000:03:00.0: mezzanine 0
[ 492.561023] Manufacturer: CERN
[ 492.561025] Product name: FmcAdc100m14b4cha
After reboot:
[root@sdapc009 ~]# rmmod spec
[root@sdapc009 ~]# modprobe spec use_msi=1 test_irq=1
[root@sdapc009 ~]# dmesg -c
[ 230.692595] spec 0000:03:00.0: remove
[ 234.013838] spec 0000:03:00.0: probe for device 0003:0000
[ 234.013853] ------------[ cut here ]------------
[ 234.013859] WARNING: at drivers/pci/msi.c:955 pci_enable_msi_block+0x98/0xb0()
[ 234.013860] Modules linked in: spec(OE+) fmc(OE) xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT ipt_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw iptable_filter coretemp kvm iTCO_wdt iTCO_vendor_support dcdbas i2c_i801 ppdev pcspkr snd_hda_codec_analog snd_hda_codec_generic snd_hda_intel snd_hda_codec sg lpc_ich mfd_core snd_hda_core snd_hwdep shpchp snd_seq snd_seq_device x38_edac parport_pc snd_pcm snd_timer snd parport soundcore edac_core binfmt_misc nfsd nfs_acl lockd grace
[ 234.013895] auth_rpcgss sunrpc ip_tables xfs libcrc32c sd_mod crc_t10dif crct10dif_generic crct10dif_common sr_mod cdrom nouveau ahci libahci video mxm_wmi wmi i2c_algo_bit drm_kms_helper serio_raw ttm libata tg3 drm ptp pps_core i2c_core floppy dm_mirror dm_region_hash dm_log dm_mod [last unloaded: spec]
[ 234.013913] CPU: 1 PID: 2100 Comm: modprobe Tainted: G OE ------------ 3.10.0-327.4.5.el7.x86_64 #1
[ 234.013915] Hardware name: Dell Inc. Precision WorkStation T3400 /0TP412, BIOS A08 08/14/2008
[ 234.013916] 0000000000000000 00000000cad93fd3 ffff88005ca1fb00 ffffffff8163515c
[ 234.013919] ffff88005ca1fb38 ffffffff8107b200 ffff88007c3b0000 0000000000000001
[ 234.013921] ffff88007c3b0000 ffff88007c3b0098 ffff88007c3b0098 ffff88005ca1fb48
[ 234.013924] Call Trace:
[ 234.013929] [<ffffffff8163515c>] dump_stack+0x19/0x1b
[ 234.013932] [<ffffffff8107b200>] warn_slowpath_common+0x70/0xb0
[ 234.013934] [<ffffffff8107b34a>] warn_slowpath_null+0x1a/0x20
[ 234.013936] [<ffffffff813423c8>] pci_enable_msi_block+0x98/0xb0
[ 234.013940] [<ffffffffa079e545>] spec_probe+0x275/0x2c0 [spec]
[ 234.013944] [<ffffffff81327d75>] local_pci_probe+0x45/0xa0
[ 234.013946] [<ffffffff81329065>] ? pci_match_device+0xe5/0x120
[ 234.013948] [<ffffffff813291d9>] pci_device_probe+0xf9/0x150
[ 234.013951] [<ffffffff813f6417>] driver_probe_device+0x87/0x390
[ 234.013953] [<ffffffff813f67f3>] __driver_attach+0x93/0xa0
[ 234.013955] [<ffffffff813f6760>] ? __device_attach+0x40/0x40
[ 234.013957] [<ffffffff813f4183>] bus_for_each_dev+0x73/0xc0
[ 234.013959] [<ffffffff813f5e6e>] driver_attach+0x1e/0x20
[ 234.013961] [<ffffffff813f59c0>] bus_add_driver+0x200/0x2d0
[ 234.013963] [<ffffffff813f6e74>] driver_register+0x64/0xf0
[ 234.013966] [<ffffffff81328d15>] __pci_register_driver+0xa5/0xc0
[ 234.013970] [<ffffffffa07a5000>] ? 0xffffffffa07a4fff
[ 234.013973] [<ffffffffa07a501e>] spec_init+0x1e/0x1000 [spec]
[ 234.013976] [<ffffffff810020e8>] do_one_initcall+0xb8/0x230
[ 234.013979] [<ffffffff810ed4ae>] load_module+0x134e/0x1b50
[ 234.013982] [<ffffffff81316800>] ? ddebug_proc_write+0xf0/0xf0
[ 234.013985] [<ffffffff810e9743>] ? copy_module_from_fd.isra.42+0x53/0x150
[ 234.013987] [<ffffffff810ede66>] SyS_finit_module+0xa6/0xd0
[ 234.013990] [<ffffffff816458c9>] system_call_fastpath+0x16/0x1b
[ 234.013992] ---[ end trace 5c4efa379a592a47 ]---
[ 234.015037] spec 0000:03:00.0: irq 33 for MSI/MSI-X
[ 234.015634] spec 0000:03:00.0: irq 34 for MSI/MSI-X
[ 234.015642] ------------[ cut here ]------------
[ 234.015647] WARNING: at fs/sysfs/dir.c:526 sysfs_add_one+0xa5/0xd0()
[ 234.015648] sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:1c.0/0000:03:00.0/msi_irqs'
[ 234.015649] Modules linked in: spec(OE+) fmc(OE) xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT ipt_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw iptable_filter coretemp kvm iTCO_wdt iTCO_vendor_support dcdbas i2c_i801 ppdev pcspkr snd_hda_codec_analog snd_hda_codec_generic snd_hda_intel snd_hda_codec sg lpc_ich mfd_core snd_hda_core snd_hwdep shpchp snd_seq snd_seq_device x38_edac parport_pc snd_pcm snd_timer snd parport soundcore edac_core binfmt_misc nfsd nfs_acl lockd grace
[ 234.015682] auth_rpcgss sunrpc ip_tables xfs libcrc32c sd_mod crc_t10dif crct10dif_generic crct10dif_common sr_mod cdrom nouveau ahci libahci video mxm_wmi wmi i2c_algo_bit drm_kms_helper serio_raw ttm libata tg3 drm ptp pps_core i2c_core floppy dm_mirror dm_region_hash dm_log dm_mod [last unloaded: spec]
[ 234.015699] CPU: 1 PID: 2100 Comm: modprobe Tainted: G W OE ------------ 3.10.0-327.4.5.el7.x86_64 #1
[ 234.015700] Hardware name: Dell Inc. Precision WorkStation T3400 /0TP412, BIOS A08 08/14/2008
[ 234.015702] ffff88005ca1f948 00000000cad93fd3 ffff88005ca1f900 ffffffff8163515c
[ 234.015704] ffff88005ca1f938 ffffffff8107b200 00000000ffffffef ffff88005dc7b2a0
[ 234.015706] ffff88005ca1f9e8 ffff88005d95d000 0000000000000000 ffff88005ca1f9a0
[ 234.015708] Call Trace:
[ 234.015712] [<ffffffff8163515c>] dump_stack+0x19/0x1b
[ 234.015715] [<ffffffff8107b200>] warn_slowpath_common+0x70/0xb0
[ 234.015717] [<ffffffff8107b29c>] warn_slowpath_fmt+0x5c/0x80
[ 234.015719] [<ffffffff8125a6b5>] sysfs_add_one+0xa5/0xd0
[ 234.015721] [<ffffffff8125a8ac>] create_dir+0x7c/0xe0
[ 234.015723] [<ffffffff8125abac>] sysfs_create_subdir+0x1c/0x20
[ 234.015726] [<ffffffff8125c4fd>] internal_create_group+0x6d/0x290
[ 234.015728] [<ffffffff8125c94a>] sysfs_create_groups+0x4a/0xa0
[ 234.015731] [<ffffffff81341bdd>] populate_msi_sysfs+0x1cd/0x210
[ 234.015733] [<ffffffff81342259>] msi_capability_init+0x179/0x250
[ 234.015736] [<ffffffff81342396>] pci_enable_msi_block+0x66/0xb0
[ 234.015740] [<ffffffffa079e545>] spec_probe+0x275/0x2c0 [spec]
[ 234.015742] [<ffffffff81327d75>] local_pci_probe+0x45/0xa0
[ 234.015745] [<ffffffff81329065>] ? pci_match_device+0xe5/0x120
[ 234.015747] [<ffffffff813291d9>] pci_device_probe+0xf9/0x150
[ 234.015749] [<ffffffff813f6417>] driver_probe_device+0x87/0x390
[ 234.015752] [<ffffffff813f67f3>] __driver_attach+0x93/0xa0
[ 234.015754] [<ffffffff813f6760>] ? __device_attach+0x40/0x40
[ 234.015755] [<ffffffff813f4183>] bus_for_each_dev+0x73/0xc0
[ 234.015758] [<ffffffff813f5e6e>] driver_attach+0x1e/0x20
[ 234.015759] [<ffffffff813f59c0>] bus_add_driver+0x200/0x2d0
[ 234.015762] [<ffffffff813f6e74>] driver_register+0x64/0xf0
[ 234.015764] [<ffffffff81328d15>] __pci_register_driver+0xa5/0xc0
[ 234.015768] [<ffffffffa07a5000>] ? 0xffffffffa07a4fff
[ 234.015771] [<ffffffffa07a501e>] spec_init+0x1e/0x1000 [spec]
[ 234.015773] [<ffffffff810020e8>] do_one_initcall+0xb8/0x230
[ 234.015775] [<ffffffff810ed4ae>] load_module+0x134e/0x1b50
[ 234.015777] [<ffffffff81316800>] ? ddebug_proc_write+0xf0/0xf0
[ 234.015780] [<ffffffff810e9743>] ? copy_module_from_fd.isra.42+0x53/0x150
[ 234.015782] [<ffffffff810ede66>] SyS_finit_module+0xa6/0xd0
[ 234.015785] [<ffffffff816458c9>] system_call_fastpath+0x16/0x1b
[ 234.015786] ---[ end trace 5c4efa379a592a48 ]---
[ 234.015862] spec 0000:03:00.0: spec_probe: enable msi block: error -17
[ 234.017045] spec 0000:03:00.0: got file "fmc/spec-init.bin", 1485236 (0x16a9b4) bytes
[ 234.208615] spec 0000:03:00.0: FPGA programming successful
[ 234.575195] spec 0000:03:00.0: invalid msi control: 0x0084
[ 234.625012] spec 0000:03:00.0: received interrupt 32
[ 234.625016] spec 0000:03:00.0: Interrupts work as expected
[ 234.625021] spec 0000:03:00.0: mezzanine 0
[ 234.625023] Manufacturer: CERN
[ 234.625024] Product name: FmcAdc100m14b4cha
in addition kernel is not able to reboot