Your message dated Sat, 07 Dec 2019 01:57:13 +0500
with message-id <9010233.RgVxligQbW@bootes>
and subject line Done: [src:linux] linux-image-4.6.0-1-amd64: kernel bug in the
intel-iommu module
has caused the Debian Bug report #833128,
regarding [src:linux] linux-image-4.6.0-1-amd64: kernel bug in the intel-iommu
module
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
833128: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=833128
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: src:linux
Version: 4.6.4-1
Severity: normal
--- Please enter the report below this line. ---
So I have an Intel Z87 based motherboard with i7-4770 CPU installed
and VT-d switched on and I'm tinkering with iommu, virtualisation and stuff,
putting intel_iommu=on as a boot parameter.
I also have a quite old TV-tuner (SAA7134-based Pinnacle PC-TV 110i) installed
in one of PCI slots. (The tuner has an ALSA DMA sound feature, if that
matters). When I use it with iommu on and then close any program which
utilize it, like VLC or tvtime, it segfaults, the device becomes unresponsive
and I get the following in dmesg:
Jul 29 03:32:15 bootes kernel: [171954.099428] kernel BUG at
drivers/iommu/intel-iommu.c:3592!
Jul 29 03:32:15 bootes kernel: [171954.099430] invalid opcode: 0000 [#2]
PREEMPT SMP
Jul 29 03:32:15 bootes kernel: [171954.099431] Modules linked in: serpent_avx2
serpent_avx_x86_64 serpent_sse2_x86_64 serpent_generic xts snd_usb_audio
snd_usbmidi_lib snd_rawmidi snd_seq_device pci_stub vboxpci(O) vboxnetadp(O)
vboxnetflt(O) vboxdrv(O) xt_multiport l2tp_ppp l2tp_netlink l2tp_core
ip6_udp_tunnel udp_tunnel pppox ppp_generic slhc bnep bluetooth rfkill
cpufreq_powersave cpufreq_userspace cpufreq_conservative cpufreq_stats
binfmt_misc uinput ip6table_filter ip6_tables xt_TARPIT(O) xt_geoip(O)
xt_tcpudp iptable_filter ip_tables x_tables nfsd auth_rpcgss nfs_acl nfs lockd
grace fscache sunrpc nls_cp866 vfat fat cuse it87 hwmon_vid i2c_dev snd_aloop
loop fuse cpuid nls_utf8 parport_pc ppdev lp parport dm_crypt saa7134_alsa
rc_pinnacle_color ir_kbd_i2c raid1 nvidia(PO) gspca_zc3xx gspca_main input_leds
joydev led_class tda827x tda8290 mxm_wmi tuner snd_hda_codec_realtek
snd_hda_codec_hdmi snd_hda_codec_generic evdev saa7134 intel_rapl
x86_pkg_temp_thermal intel_powerclamp snd_hda_intel tveeprom coretemp
videobuf2_dma_sg videobuf2_memops videobuf2_v4l2 videobuf2_core kvm_intel
snd_hda_codec rc_core snd_hda_core v4l2_common drm videodev kvm media snd_hwdep
pcspkr snd_pcm irqbypass snd_timer crct10dif_pclmul snd crc32_pclmul
ghash_clmulni_intel serio_raw lpc_ich soundcore mei_me mei mfd_core 8250_fintek
sg i2c_i801 tpm_infineon wmi tpm_tis battery tpm video processor button overlay
hid_microsoft ext4 ecb crc16 jbd2 mbcache hid_generic usbhid hid dm_raid
raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx md_mod xor
raid6_pq libcrc32c crc32c_generic dm_mod sd_mod crc32c_intel aesni_intel
aes_x86_64 glue_helper lrw gf128mul ablk_helper cryptd firewire_ohci
firewire_core crc_itu_t psmouse ahci libahci libata scsi_mod ehci_pci igb
ehci_hcd i2c_algo_bit i2c_core dca xhci_pci xhci_hcd e1000e ptp usbcore
pps_core usb_common thermal fan fjes
Jul 29 03:32:15 bootes kernel: [171954.099481] CPU: 2 PID: 11180 Comm: tvtime
Tainted: P D O 4.6.4-bootes1 #1
Jul 29 03:32:15 bootes kernel: [171954.099482] Hardware name: Gigabyte
Technology Co., Ltd. Z87X-UD5H/Z87X-UD5H-CF, BIOS F9 03/18/2014
Jul 29 03:32:15 bootes kernel: [171954.099483] task: ffff880236dd63c0 ti:
ffff8803ea930000 task.ti: ffff8803ea930000
Jul 29 03:32:15 bootes kernel: [171954.099483] RIP: 0010:[<ffffffff81370ae9>]
[<ffffffff81370ae9>] intel_unmap+0x1a9/0x220
Jul 29 03:32:15 bootes kernel: [171954.099487] RSP: 0018:ffff8803ea933d38
EFLAGS: 00010246
Jul 29 03:32:15 bootes kernel: [171954.099488] RAX: 0000000000000000 RBX:
00000000000000cb RCX: 0000000000000002
Jul 29 03:32:15 bootes kernel: [171954.099489] RDX: 0000000000000000 RSI:
00000000ffe00000 RDI: ffff88041bc9b098
Jul 29 03:32:15 bootes kernel: [171954.099489] RBP: ffff88041bc9b098 R08:
ffff8803ea933d78 R09: 0000000000000000
Jul 29 03:32:15 bootes kernel: [171954.099490] R10: 0000000000000557 R11:
0000000000000246 R12: ffff8800c9bf9800
Jul 29 03:32:15 bootes kernel: [171954.099491] R13: 00000000ffe00000 R14:
0000000000000000 R15: 0000000000000004
Jul 29 03:32:15 bootes kernel: [171954.099492] FS: 00007fa81e0a2780(0000)
GS:ffff88042ec80000(0000) knlGS:0000000000000000
Jul 29 03:32:15 bootes kernel: [171954.099492] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Jul 29 03:32:15 bootes kernel: [171954.099493] CR2: 00007f3bf52dbfc0 CR3:
000000023b2b4000 CR4: 00000000001406e0
Jul 29 03:32:15 bootes kernel: [171954.099493] Stack:
Jul 29 03:32:15 bootes kernel: [171954.099494] 00007fa817200000
00000000000000cb ffff880077bbda80 ffff8800c9bf9800
Jul 29 03:32:15 bootes kernel: [171954.099495] ffff880418394bd8
0000000000000000 0000000000000004 ffffffffc048464a
Jul 29 03:32:15 bootes kernel: [171954.099497] 0000000000000020
00000000fe18f6d1 ffff8800c9bf9818 0000000000000000
Jul 29 03:32:15 bootes kernel: [171954.099498] Call Trace:
Jul 29 03:32:15 bootes kernel: [171954.099501] [<ffffffffc048464a>] ?
vb2_dma_sg_put+0x8a/0x110 [videobuf2_dma_sg]
Jul 29 03:32:15 bootes kernel: [171954.099503] [<ffffffffc072120a>] ?
__vb2_buf_mem_free+0x2a/0x70 [videobuf2_core]
Jul 29 03:32:15 bootes kernel: [171954.099504] [<ffffffffc0722134>] ?
__vb2_queue_free+0x1a4/0x1f0 [videobuf2_core]
Jul 29 03:32:15 bootes kernel: [171954.099505] [<ffffffffc072411c>] ?
vb2_core_queue_release+0x2c/0x40 [videobuf2_core]
Jul 29 03:32:15 bootes kernel: [171954.099507] [<ffffffffc04f5741>] ?
_vb2_fop_release+0x61/0x90 [videobuf2_v4l2]
Jul 29 03:32:15 bootes kernel: [171954.099509] [<ffffffffc054dbba>] ?
video_release+0x7a/0x290 [saa7134]
Jul 29 03:32:15 bootes kernel: [171954.099512] [<ffffffffc07f33cd>] ?
v4l2_release+0x2d/0x70 [videodev]
Jul 29 03:32:15 bootes kernel: [171954.099514] [<ffffffff8117a8e3>] ?
__fput+0xb3/0x1c0
Jul 29 03:32:15 bootes kernel: [171954.099516] [<ffffffff8106d9f9>] ?
task_work_run+0x79/0x90
Jul 29 03:32:15 bootes kernel: [171954.099518] [<ffffffff81002137>] ?
exit_to_usermode_loop+0x97/0xa0
Jul 29 03:32:15 bootes kernel: [171954.099519] [<ffffffff810025bf>] ?
syscall_return_slowpath+0x3f/0x50
Jul 29 03:32:15 bootes kernel: [171954.099521] [<ffffffff814dffd9>] ?
system_call_fast_compare_end+0x86/0x88
Jul 29 03:32:15 bootes kernel: [171954.099522] Code: 29 f9 45 31 c9 e8 b8 c6 ff
ff 4c 89 f7 4c 89 e6 e8 fd 91 ff ff 48 83 c4 08 48 89 ef 5b 5d 41 5c 41 5d 41
5e 41 5f e9 97 c7 ff ff <0f> 0b c6 05 6f d7 51 00 01 48 83 c4 08 4c 89 e9 48 c7
c2 18 82
Jul 29 03:32:15 bootes kernel: [171954.099536] RIP [<ffffffff81370ae9>]
intel_unmap+0x1a9/0x220
Jul 29 03:32:15 bootes kernel: [171954.099537] RSP <ffff8803ea933d38>
Jul 29 03:32:15 bootes kernel: [171954.099538] ---[ end trace 1b011d674b7a63ac
]---
Looks like iommu driver can't find a DMAR domain in dev structure or trying
to unmap the domain which isn't mapped or something.
--- System information. ---
Architecture: amd64
Kernel: Linux 4.6.0-1-amd64
Debian Release: stretch/sid
990 stable security.debian.org
990 stable ftp.fi.debian.org
990 stable dl.google.com
990 stable deb.torproject.org
90 unstable deb.i2p2.no
500 testing ftp.fi.debian.org
500 testing deb.torproject.org
--- Package information. ---
Package's Depends field is empty.
Package's Recommends field is empty.
Package's Suggests field is empty.
--- End Message ---
--- Begin Message ---
Package: src:linux
Version: 5.3.9-2~bpo10+1
--- Please enter the report below this line. ---
Can't reproduce anymore with 5.3.9. Seems to be fixed upstream.
--- End Message ---
