Oh hai!

I have LSI SAS 9217-8i HBA and `rmmod mpt3sas` leads to multiple backtraces if any disks are connected to the HBA. Reproducible on vanilla 4.7.5/4.8.1/4.9-rc1 kernels (haven't tested on another versions).


Full output (4.9-rc1 kernel, 3*Seagate ST3000NM0023 drives are connected) is rather long and can be found here: https://gist.github.com/ojab/f21ff778a378e88b227a4253d683c6ca

First backtrace for the reference:

Oct 16 13:12:30 ojab kernel: [ 88.128184] mpt3sas version 13.100.00.00 unloading Oct 16 13:12:30 ojab kernel: [ 88.128838] mpt2sas_cm0: removing handle(0x000b), sas_addr(0x5000c500588f549d) Oct 16 13:12:30 ojab kernel: [ 88.128976] mpt2sas_cm0: removing : enclosure logical id(0x500605b005a6c320), slot(4) Oct 16 13:12:30 ojab kernel: [ 88.130608] mpt2sas_cm0: removing handle(0x0009), sas_addr(0x5000c500588f64e9) Oct 16 13:12:30 ojab kernel: [ 88.130720] mpt2sas_cm0: removing : enclosure logical id(0x500605b005a6c320), slot(6) Oct 16 13:12:30 ojab kernel: [ 88.131416] mpt2sas_cm0: removing handle(0x000a), sas_addr(0x5000c500588f3825) Oct 16 13:12:30 ojab kernel: [ 88.131518] mpt2sas_cm0: removing : enclosure logical id(0x500605b005a6c320), slot(5) Oct 16 13:12:30 ojab kernel: [ 88.132637] ------------[ cut here ]------------ Oct 16 13:12:30 ojab kernel: [ 88.132715] WARNING: CPU: 2 PID: 1578 at fs/sysfs/group.c:237 sysfs_remove_group+0xa0/0xb0 Oct 16 13:12:30 ojab kernel: [ 88.132810] sysfs group 'power' not found for kobject '6:0:0:0' Oct 16 13:12:30 ojab kernel: [ 88.132875] Modules linked in: sit tunnel4 ip_tunnel af_packet bridge stp ipv6 llc ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_REDIRECT nf_nat_redirect xt_tcpudp xt_conntrack iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_\ conntrack iptable_filter ip_tables x_tables sch_fq_codel joydev input_leds hid_generic usbhid hid btrfs xor raid6_pq pps_ldisc pps_core radeon evdev edac_core arc4 drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ath9k kvm_amd ttm ath9k_common kvm ath9k_hw dr\ m snd_hda_codec_realtek mac80211 snd_hda_codec_generic irqbypass psmouse k10temp ohci_pci ath cfg80211 backlight 8250 snd_hda_intel 8250_base serial_core rtc_cmos ehci_pci ehci_hcd snd_hda_codec snd_hwdep snd_hda_core cfbfillrect snd_pcm i2c_piix4 cfbimgblt ohci_hcd mpt3\
sas(-) cfbcopyarea i2c_algo_bit
Oct 16 13:12:30 ojab kernel: [ 88.135640] usbcore snd_timer snd i2c_core soundcore usb_common r8169 acpi_cpufreq raid_class mii scsi_transport_sas button processor unix f71882fg hwmon fbcon bitblit softcursor fb fbdev font Oct 16 13:12:30 ojab kernel: [ 88.136514] CPU: 2 PID: 1578 Comm: rmmod Not tainted 4.9.0-rc1-ojab #40 Oct 16 13:12:30 ojab kernel: [ 88.136581] ffffac8a02f03c10 ffffffff832e71a0 ffffac8a02f03c60 0000000000000000 Oct 16 13:12:30 ojab kernel: [ 88.136792] ffffac8a02f03c50 ffffffff83049fb3 000000ed8321922f 0000000000000000 Oct 16 13:12:30 ojab kernel: [ 88.137014] ffffffff838a2840 ffffa0dd15602410 ffffa0dd15400f88 ffffa0dd15400fd8
Oct 16 13:12:30 ojab kernel: [   88.137223] Call Trace:
Oct 16 13:12:30 ojab kernel: [ 88.137294] [<ffffffff832e71a0>] dump_stack+0x67/0x97 Oct 16 13:12:30 ojab kernel: [ 88.137360] [<ffffffff83049fb3>] __warn+0xe3/0x100 Oct 16 13:12:30 ojab kernel: [ 88.137425] [<ffffffff8304a01f>] warn_slowpath_fmt+0x4f/0x60 Oct 16 13:12:30 ojab kernel: [ 88.137492] [<ffffffff8321a09d>] ? kernfs_find_and_get_ns+0x4d/0x60 Oct 16 13:12:30 ojab kernel: [ 88.137558] [<ffffffff8321d2a0>] sysfs_remove_group+0xa0/0xb0 Oct 16 13:12:30 ojab kernel: [ 88.137625] [<ffffffff833aad40>] dpm_sysfs_remove+0x60/0x70 Oct 16 13:12:30 ojab kernel: [ 88.137691] [<ffffffff8339f539>] device_del+0x49/0x250 Oct 16 13:12:30 ojab kernel: [ 88.137756] [<ffffffff8339f752>] device_unregister+0x12/0x30 Oct 16 13:12:30 ojab kernel: [ 88.137825] [<ffffffff832d82de>] bsg_unregister_queue+0x5e/0xa0 Oct 16 13:12:30 ojab kernel: [ 88.137893] [<ffffffff833cd2ba>] __scsi_remove_device+0xaa/0xd0 Oct 16 13:12:30 ojab kernel: [ 88.137969] [<ffffffff833cb760>] scsi_forget_host+0x60/0x70 Oct 16 13:12:30 ojab kernel: [ 88.138035] [<ffffffff833c0c37>] scsi_remove_host+0x77/0x110 Oct 16 13:12:30 ojab kernel: [ 88.138116] [<ffffffffc02323c9>] scsih_remove+0x139/0x220 [mpt3sas] Oct 16 13:12:30 ojab kernel: [ 88.138184] [<ffffffff8331e764>] pci_device_remove+0x44/0xd0 Oct 16 13:12:30 ojab kernel: [ 88.138251] [<ffffffff833a3efa>] __device_release_driver+0x9a/0x140 Oct 16 13:12:30 ojab kernel: [ 88.138318] [<ffffffff833a40a6>] driver_detach+0xa6/0xb0 Oct 16 13:12:30 ojab kernel: [ 88.138384] [<ffffffff833a2d9c>] bus_remove_driver+0x4c/0xa0 Oct 16 13:12:30 ojab kernel: [ 88.138450] [<ffffffff833a423c>] driver_unregister+0x2c/0x50 Oct 16 13:12:30 ojab kernel: [ 88.138516] [<ffffffff8331e243>] pci_unregister_driver+0x23/0x90 Oct 16 13:12:30 ojab kernel: [ 88.138594] [<ffffffffc0241a2b>] _mpt3sas_exit+0x25/0x38 [mpt3sas] Oct 16 13:12:30 ojab kernel: [ 88.138660] [<ffffffff830c1ec1>] SyS_delete_module+0x181/0x1e0 Oct 16 13:12:30 ojab kernel: [ 88.138728] [<ffffffff834d8c6a>] entry_SYSCALL_64_fastpath+0x18/0xa8 Oct 16 13:12:30 ojab kernel: [ 88.138811] ---[ end trace 4bd02fa3ee990966 ]---

//wbr ojab
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