* Re: [Bug 215890] New: Regression in 5.18: bcm5974 trackpad causes error: xhci_hcd rejecting DMA map of vmalloc memory [not found] <bug-215890-208809@https.bugzilla.kernel.org/> @ 2022-05-04 8:42 ` Thorsten Leemhuis 2022-05-13 8:24 ` Thorsten Leemhuis 0 siblings, 1 reply; 4+ messages in thread From: Thorsten Leemhuis @ 2022-05-04 8:42 UTC (permalink / raw) To: Henrik Rydberg, Dmitry Torokhov Cc: linux-usb, bugzilla-daemon, regressions@lists.linux.dev, open list:HID CORE LAYER, Satadru Pramanik Hi, this is your Linux kernel regression tracker. Linux-Input developers, do you have any idea what might be causing the problem outline below? It's a post 5.17 regression in mainline that was reported to bugzilla.kernel.org about a week ago, but didn't even get a single reply. Might be some other subsystem that is causing it, not sure. On 27.04.22 00:42, bugzilla-daemon@kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=215890 > > Bug ID: 215890 > Summary: Regression in 5.18: bcm5974 trackpad causes error: > xhci_hcd rejecting DMA map of vmalloc memory > Product: Drivers > Version: 2.5 > Kernel Version: 5.18-rc4 > Hardware: Intel > OS: Linux > Tree: Mainline > Status: NEW > Severity: high > Priority: P1 > Component: USB > Assignee: drivers_usb@kernel-bugs.kernel.org > Reporter: satadru@umich.edu > Regression: No > > The Apple BCM5974 trackpad & keyboard show up in sudo libinput list-devices > when booted into 5.17.4. > > In 5.18-rc4, the keyboard works, but the trackpad does not. libinput > list-devices shows the keyboard, but not the trackpad. > > This error shows up in dmesg: > > [ 7.144632] ------------[ cut here ]------------ > [ 7.144635] xhci_hcd 0000:00:14.0: rejecting DMA map of vmalloc memory > [ 7.144648] WARNING: CPU: 6 PID: 969 at include/linux/dma-mapping.h:326 > usb_hcd_map_urb_for_dma+0x4c0/0x4f0 > [ 7.144656] Modules linked in: mei_hdcp x86_pkg_temp_thermal > intel_powerclamp snd_hda_codec_cirrus snd_hda_codec_generic ledtrig_audio > snd_hda_codec_hdmi btusb btrtl wl(POE) kvm_intel btbcm snd_seq_midi > snd_hda_intel btintel snd_seq_midi_event btmtk kvm bluetooth snd_intel_dspcfg > snd_intel_sdw_acpi rapl applesmc snd_rawmidi ecdh_generic snd_hda_codec > intel_cstate ecc joydev mei_me bcm5974 snd_hda_core input_leds cfg80211 > efi_pstore(+) snd_hwdep apple_mfi_fastcharge snd_seq snd_pcm mei snd_seq_device > snd_timer snd sbs(+) soundcore acpi_als industrialio_triggered_buffer sbshc > kfifo_buf apple_gmux industrialio mac_hid apple_bl facetimehd(OE) > videobuf2_dma_sg videobuf2_memops videobuf2_v4l2 videobuf2_common videodev mc > coretemp ipmi_devintf ipmi_msghandler msr parport_pc ppdev lp parport ip_tables > x_tables autofs4 zfs(POE) zunicode(POE) zzstd(OE) zlua(OE) zavl(POE) icp(POE) > zcommon(POE) znvpair(POE) spl(OE) z3fold lz4 lz4_compress hid_logitech_hidpp > hid_apple hid_logitech_dj hid_generic > [ 7.144716] usbhid hid i915 nouveau mxm_wmi wmi drm_buddy i2c_algo_bit > drm_ttm_helper ttm drm_dp_helper cec rc_core drm_kms_helper uas syscopyarea > usb_storage sysfillrect crct10dif_pclmul crc32_pclmul ghash_clmulni_intel > sysimgblt fb_sys_fops aesni_intel nvme crypto_simd i2c_i801 cryptd drm > nvme_core thunderbolt lpc_ich i2c_smbus xhci_pci xhci_pci_renesas video > [ 7.144742] CPU: 6 PID: 969 Comm: systemd-udevd Tainted: P OE > 5.18.0-rc4 #1 > [ 7.144745] Hardware name: Apple Inc. MacBookPro11,3/Mac-2BD1B31983FE1663, > BIOS 432.60.3.0.0 10/27/2021 > [ 7.144746] RIP: 0010:usb_hcd_map_urb_for_dma+0x4c0/0x4f0 > [ 7.144752] Code: 50 c6 05 dd fd 8a 01 01 4d 85 f6 75 03 4d 8b 32 4c 89 d7 > e8 42 6f ef ff 4c 89 f2 48 c7 c7 e8 3d 43 96 48 89 c6 e8 0f f7 36 00 <0f> 0b e9 > 58 ff ff ff 48 8b 35 32 e9 4a 01 e9 ae fe ff ff 48 8b 35 > [ 7.144754] RSP: 0018:ffffb4494abd7978 EFLAGS: 00010286 > [ 7.144756] RAX: 0000000000000000 RBX: 0000000000000000 RCX: > ffffa0ae6f3a05a8 > [ 7.144757] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: > ffffa0ae6f3a05a0 > [ 7.144759] RBP: ffffb4494abd79b0 R08: 0000000000000003 R09: > 0000000000000001 > [ 7.144760] R10: ffffffffffffffff R11: 0000000000000001 R12: > ffffa0ab16e42900 > [ 7.144761] R13: ffffa0ab1e092000 R14: ffffa0ab0155cec0 R15: > 00000000000001de > [ 7.144762] FS: 00007f7696c778c0(0000) GS:ffffa0ae6f380000(0000) > knlGS:0000000000000000 > [ 7.144764] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 7.144766] CR2: 00007f76975c1f06 CR3: 000000011eda6005 CR4: > 00000000001706e0 > [ 7.144767] Call Trace: > [ 7.144771] <TASK> > [ 7.144774] xhci_map_urb_for_dma+0x14c/0x2b0 > [ 7.144783] usb_hcd_submit_urb+0x98/0xc70 > [ 7.144785] ? __slab_free+0xbf/0x310 > [ 7.144789] ? usb_control_msg+0xfc/0x140 > [ 7.144792] usb_submit_urb+0x24f/0x6c0 > [ 7.144797] bcm5974_start_traffic+0x4c/0xa0 [bcm5974] > [ 7.144801] bcm5974_open+0x44/0x90 [bcm5974] > [ 7.144803] input_open_device+0x8d/0xe0 > [ 7.144806] evdev_open+0x1cc/0x200 > [ 7.144809] chrdev_open+0xc4/0x240 > [ 7.144813] ? cdev_device_add+0x90/0x90 > [ 7.144815] do_dentry_open+0x157/0x380 > [ 7.144819] vfs_open+0x2d/0x30 > [ 7.144823] path_openat+0xb5b/0x12b0 > [ 7.144826] ? page_add_file_rmap+0x81/0x300 > [ 7.144829] ? filemap_map_pages+0x148/0x7a0 > [ 7.144833] do_filp_open+0xb6/0x160 > [ 7.144836] ? __check_object_size+0x128/0x160 > [ 7.144840] do_sys_openat2+0x9b/0x160 > [ 7.144842] __x64_sys_openat+0x56/0x90 > [ 7.144844] do_syscall_64+0x59/0x80 > [ 7.144848] ? irqentry_exit_to_user_mode+0x9/0x20 > [ 7.144850] ? irqentry_exit+0x33/0x40 > [ 7.144852] ? exc_page_fault+0x87/0x170 > [ 7.144854] ? asm_exc_page_fault+0x8/0x30 > [ 7.144858] entry_SYSCALL_64_after_hwframe+0x44/0xae > [ 7.144861] RIP: 0033:0x7f76974096eb > [ 7.144864] Code: 25 00 00 41 00 3d 00 00 41 00 74 4b 64 8b 04 25 18 00 00 > 00 85 c0 75 67 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 > f0 ff ff 0f 87 91 00 00 00 48 8b 54 24 28 64 48 2b 14 25 > [ 7.144866] RSP: 002b:00007ffff8b30d00 EFLAGS: 00000246 ORIG_RAX: > 0000000000000101 > [ 7.144868] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: > 00007f76974096eb > [ 7.144870] RDX: 0000000000080902 RSI: 0000558ac9a4b030 RDI: > 00000000ffffff9c > [ 7.144871] RBP: 0000558ac9a4b030 R08: 0000000000000000 R09: > 0000000000000000 > [ 7.144872] R10: 0000000000000000 R11: 0000000000000246 R12: > 0000000000080902 > [ 7.144873] R13: 00007ffff8b30da0 R14: 0000558ac9925570 R15: > 0000558ac992557a > [ 7.144875] </TASK> > [ 7.144876] ---[ end trace 0000000000000000 ]--- For more details check this thread or the bugzilla ticket, it has a second comment already from the reporter. Anyway, to get this tracked: #regzbot introduced: v5.17..v5.18-rc4 #regzbot from: Satadru Pramanik <satadru@umich.edu> #regzbot title: input/usb/???: bcm5974 trackpad causes error: xhci_hcd rejecting DMA map of vmalloc memory #regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215890 Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) P.S.: As the Linux kernel's regression tracker I deal with a lot of reports and sometimes miss something important when writing mails like this. If that's the case here, don't hesitate to tell me in a public reply, it's in everyone's interest to set the public record straight. ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Bug 215890] New: Regression in 5.18: bcm5974 trackpad causes error: xhci_hcd rejecting DMA map of vmalloc memory 2022-05-04 8:42 ` [Bug 215890] New: Regression in 5.18: bcm5974 trackpad causes error: xhci_hcd rejecting DMA map of vmalloc memory Thorsten Leemhuis @ 2022-05-13 8:24 ` Thorsten Leemhuis 2022-05-13 10:37 ` Christoph Hellwig 0 siblings, 1 reply; 4+ messages in thread From: Thorsten Leemhuis @ 2022-05-13 8:24 UTC (permalink / raw) To: Christoph Hellwig Cc: linux-usb, bugzilla-daemon, regressions@lists.linux.dev, open list:HID CORE LAYER, Satadru Pramanik, Dmitry Torokhov, Henrik Rydberg On 04.05.22 10:42, Thorsten Leemhuis wrote: > > Linux-Input developers, do you have any idea what might be causing the > problem outline below? It's a post 5.17 regression in mainline that was > reported to bugzilla.kernel.org about a week ago, but didn't even get a > single reply. Might be some other subsystem that is causing it, not sure. > > On 27.04.22 00:42, bugzilla-daemon@kernel.org wrote: >> https://bugzilla.kernel.org/show_bug.cgi?id=215890 FYI, the reporter bisected this regression down to f5ff79fddf0e ("dma-mapping: remove CONFIG_DMA_REMAP"). CCing Christoph, who authored that change (I wonder if it just exposed an existing bug, but well, that's up for you to discuss). Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) P.S.: As the Linux kernel's regression tracker I deal with a lot of reports and sometimes miss something important when writing mails like this. If that's the case here, don't hesitate to tell me in a public reply, it's in everyone's interest to set the public record straight. #regzbot introduced: f5ff79fddf0efecca538046b5cc20fb3ded2 >> Bug ID: 215890 >> Summary: Regression in 5.18: bcm5974 trackpad causes error: >> xhci_hcd rejecting DMA map of vmalloc memory >> Product: Drivers >> Version: 2.5 >> Kernel Version: 5.18-rc4 >> Hardware: Intel >> OS: Linux >> Tree: Mainline >> Status: NEW >> Severity: high >> Priority: P1 >> Component: USB >> Assignee: drivers_usb@kernel-bugs.kernel.org >> Reporter: satadru@umich.edu >> Regression: No >> >> The Apple BCM5974 trackpad & keyboard show up in sudo libinput list-devices >> when booted into 5.17.4. >> >> In 5.18-rc4, the keyboard works, but the trackpad does not. libinput >> list-devices shows the keyboard, but not the trackpad. >> >> This error shows up in dmesg: >> >> [ 7.144632] ------------[ cut here ]------------ >> [ 7.144635] xhci_hcd 0000:00:14.0: rejecting DMA map of vmalloc memory >> [ 7.144648] WARNING: CPU: 6 PID: 969 at include/linux/dma-mapping.h:326 >> usb_hcd_map_urb_for_dma+0x4c0/0x4f0 >> [ 7.144656] Modules linked in: mei_hdcp x86_pkg_temp_thermal >> intel_powerclamp snd_hda_codec_cirrus snd_hda_codec_generic ledtrig_audio >> snd_hda_codec_hdmi btusb btrtl wl(POE) kvm_intel btbcm snd_seq_midi >> snd_hda_intel btintel snd_seq_midi_event btmtk kvm bluetooth snd_intel_dspcfg >> snd_intel_sdw_acpi rapl applesmc snd_rawmidi ecdh_generic snd_hda_codec >> intel_cstate ecc joydev mei_me bcm5974 snd_hda_core input_leds cfg80211 >> efi_pstore(+) snd_hwdep apple_mfi_fastcharge snd_seq snd_pcm mei snd_seq_device >> snd_timer snd sbs(+) soundcore acpi_als industrialio_triggered_buffer sbshc >> kfifo_buf apple_gmux industrialio mac_hid apple_bl facetimehd(OE) >> videobuf2_dma_sg videobuf2_memops videobuf2_v4l2 videobuf2_common videodev mc >> coretemp ipmi_devintf ipmi_msghandler msr parport_pc ppdev lp parport ip_tables >> x_tables autofs4 zfs(POE) zunicode(POE) zzstd(OE) zlua(OE) zavl(POE) icp(POE) >> zcommon(POE) znvpair(POE) spl(OE) z3fold lz4 lz4_compress hid_logitech_hidpp >> hid_apple hid_logitech_dj hid_generic >> [ 7.144716] usbhid hid i915 nouveau mxm_wmi wmi drm_buddy i2c_algo_bit >> drm_ttm_helper ttm drm_dp_helper cec rc_core drm_kms_helper uas syscopyarea >> usb_storage sysfillrect crct10dif_pclmul crc32_pclmul ghash_clmulni_intel >> sysimgblt fb_sys_fops aesni_intel nvme crypto_simd i2c_i801 cryptd drm >> nvme_core thunderbolt lpc_ich i2c_smbus xhci_pci xhci_pci_renesas video >> [ 7.144742] CPU: 6 PID: 969 Comm: systemd-udevd Tainted: P OE >> 5.18.0-rc4 #1 >> [ 7.144745] Hardware name: Apple Inc. MacBookPro11,3/Mac-2BD1B31983FE1663, >> BIOS 432.60.3.0.0 10/27/2021 >> [ 7.144746] RIP: 0010:usb_hcd_map_urb_for_dma+0x4c0/0x4f0 >> [ 7.144752] Code: 50 c6 05 dd fd 8a 01 01 4d 85 f6 75 03 4d 8b 32 4c 89 d7 >> e8 42 6f ef ff 4c 89 f2 48 c7 c7 e8 3d 43 96 48 89 c6 e8 0f f7 36 00 <0f> 0b e9 >> 58 ff ff ff 48 8b 35 32 e9 4a 01 e9 ae fe ff ff 48 8b 35 >> [ 7.144754] RSP: 0018:ffffb4494abd7978 EFLAGS: 00010286 >> [ 7.144756] RAX: 0000000000000000 RBX: 0000000000000000 RCX: >> ffffa0ae6f3a05a8 >> [ 7.144757] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: >> ffffa0ae6f3a05a0 >> [ 7.144759] RBP: ffffb4494abd79b0 R08: 0000000000000003 R09: >> 0000000000000001 >> [ 7.144760] R10: ffffffffffffffff R11: 0000000000000001 R12: >> ffffa0ab16e42900 >> [ 7.144761] R13: ffffa0ab1e092000 R14: ffffa0ab0155cec0 R15: >> 00000000000001de >> [ 7.144762] FS: 00007f7696c778c0(0000) GS:ffffa0ae6f380000(0000) >> knlGS:0000000000000000 >> [ 7.144764] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> [ 7.144766] CR2: 00007f76975c1f06 CR3: 000000011eda6005 CR4: >> 00000000001706e0 >> [ 7.144767] Call Trace: >> [ 7.144771] <TASK> >> [ 7.144774] xhci_map_urb_for_dma+0x14c/0x2b0 >> [ 7.144783] usb_hcd_submit_urb+0x98/0xc70 >> [ 7.144785] ? __slab_free+0xbf/0x310 >> [ 7.144789] ? usb_control_msg+0xfc/0x140 >> [ 7.144792] usb_submit_urb+0x24f/0x6c0 >> [ 7.144797] bcm5974_start_traffic+0x4c/0xa0 [bcm5974] >> [ 7.144801] bcm5974_open+0x44/0x90 [bcm5974] >> [ 7.144803] input_open_device+0x8d/0xe0 >> [ 7.144806] evdev_open+0x1cc/0x200 >> [ 7.144809] chrdev_open+0xc4/0x240 >> [ 7.144813] ? cdev_device_add+0x90/0x90 >> [ 7.144815] do_dentry_open+0x157/0x380 >> [ 7.144819] vfs_open+0x2d/0x30 >> [ 7.144823] path_openat+0xb5b/0x12b0 >> [ 7.144826] ? page_add_file_rmap+0x81/0x300 >> [ 7.144829] ? filemap_map_pages+0x148/0x7a0 >> [ 7.144833] do_filp_open+0xb6/0x160 >> [ 7.144836] ? __check_object_size+0x128/0x160 >> [ 7.144840] do_sys_openat2+0x9b/0x160 >> [ 7.144842] __x64_sys_openat+0x56/0x90 >> [ 7.144844] do_syscall_64+0x59/0x80 >> [ 7.144848] ? irqentry_exit_to_user_mode+0x9/0x20 >> [ 7.144850] ? irqentry_exit+0x33/0x40 >> [ 7.144852] ? exc_page_fault+0x87/0x170 >> [ 7.144854] ? asm_exc_page_fault+0x8/0x30 >> [ 7.144858] entry_SYSCALL_64_after_hwframe+0x44/0xae >> [ 7.144861] RIP: 0033:0x7f76974096eb >> [ 7.144864] Code: 25 00 00 41 00 3d 00 00 41 00 74 4b 64 8b 04 25 18 00 00 >> 00 85 c0 75 67 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 >> f0 ff ff 0f 87 91 00 00 00 48 8b 54 24 28 64 48 2b 14 25 >> [ 7.144866] RSP: 002b:00007ffff8b30d00 EFLAGS: 00000246 ORIG_RAX: >> 0000000000000101 >> [ 7.144868] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: >> 00007f76974096eb >> [ 7.144870] RDX: 0000000000080902 RSI: 0000558ac9a4b030 RDI: >> 00000000ffffff9c >> [ 7.144871] RBP: 0000558ac9a4b030 R08: 0000000000000000 R09: >> 0000000000000000 >> [ 7.144872] R10: 0000000000000000 R11: 0000000000000246 R12: >> 0000000000080902 >> [ 7.144873] R13: 00007ffff8b30da0 R14: 0000558ac9925570 R15: >> 0000558ac992557a >> [ 7.144875] </TASK> >> [ 7.144876] ---[ end trace 0000000000000000 ]--- > > For more details check this thread or the bugzilla ticket, it has a > second comment already from the reporter. > > Anyway, to get this tracked: > > #regzbot introduced: v5.17..v5.18-rc4 > #regzbot from: Satadru Pramanik <satadru@umich.edu> > #regzbot title: input/usb/???: bcm5974 trackpad causes error: xhci_hcd > rejecting DMA map of vmalloc memory > #regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215890 > > Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) > > P.S.: As the Linux kernel's regression tracker I deal with a lot of > reports and sometimes miss something important when writing mails like > this. If that's the case here, don't hesitate to tell me in a public > reply, it's in everyone's interest to set the public record straight. ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Bug 215890] New: Regression in 5.18: bcm5974 trackpad causes error: xhci_hcd rejecting DMA map of vmalloc memory 2022-05-13 8:24 ` Thorsten Leemhuis @ 2022-05-13 10:37 ` Christoph Hellwig 2022-05-13 10:47 ` Christoph Hellwig 0 siblings, 1 reply; 4+ messages in thread From: Christoph Hellwig @ 2022-05-13 10:37 UTC (permalink / raw) To: Thorsten Leemhuis Cc: Christoph Hellwig, linux-usb, bugzilla-daemon, regressions@lists.linux.dev, open list:HID CORE LAYER, Satadru Pramanik, Dmitry Torokhov, Henrik Rydberg On Fri, May 13, 2022 at 10:24:34AM +0200, Thorsten Leemhuis wrote: > On 04.05.22 10:42, Thorsten Leemhuis wrote: > > > > Linux-Input developers, do you have any idea what might be causing the > > problem outline below? It's a post 5.17 regression in mainline that was > > reported to bugzilla.kernel.org about a week ago, but didn't even get a > > single reply. Might be some other subsystem that is causing it, not sure. > > > > On 27.04.22 00:42, bugzilla-daemon@kernel.org wrote: > >> https://bugzilla.kernel.org/show_bug.cgi?id=215890 > > FYI, the reporter bisected this regression down to f5ff79fddf0e > ("dma-mapping: remove CONFIG_DMA_REMAP"). CCing Christoph, who authored > that change (I wonder if it just exposed an existing bug, but well, > that's up for you to discuss). > > Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) > > P.S.: As the Linux kernel's regression tracker I deal with a lot of > reports and sometimes miss something important when writing mails like > this. If that's the case here, don't hesitate to tell me in a public > reply, it's in everyone's interest to set the public record straight. > > #regzbot introduced: f5ff79fddf0efecca538046b5cc20fb3ded2 Well, this just uncovered an existing bug in the driver. You can not just dma map memory returned from dma_alloc_coherent, and this driver would already get vmalloc memory on arm/arm64 platforms anyway, we now just do the same on x86 as well. ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Bug 215890] New: Regression in 5.18: bcm5974 trackpad causes error: xhci_hcd rejecting DMA map of vmalloc memory 2022-05-13 10:37 ` Christoph Hellwig @ 2022-05-13 10:47 ` Christoph Hellwig 0 siblings, 0 replies; 4+ messages in thread From: Christoph Hellwig @ 2022-05-13 10:47 UTC (permalink / raw) To: Thorsten Leemhuis Cc: Christoph Hellwig, linux-usb, bugzilla-daemon, regressions@lists.linux.dev, open list:HID CORE LAYER, Satadru Pramanik, Dmitry Torokhov, Henrik Rydberg On Fri, May 13, 2022 at 12:37:24PM +0200, Christoph Hellwig wrote: > > #regzbot introduced: f5ff79fddf0efecca538046b5cc20fb3ded2 > > Well, this just uncovered an existing bug in the driver. You can not > just dma map memory returned from dma_alloc_coherent, and this driver > would already get vmalloc memory on arm/arm64 platforms anyway, we > now just do the same on x86 as well. From a quick look through the trace it seems somehow usb_hcd_map_urb_for_dma tries to create another DMA mapping for a buffer allocated from usb_alloc_coherent that uses a dma coherent allocation below. It really needs to use the dma address returned from usb_alloc_coherent instead of trying to map the URB again. But I don't have the slightest idea of why that only happens for this particular setup, and I really need some helpe from the usb folks to untangle it ^ permalink raw reply [flat|nested] 4+ messages in thread
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2022-05-04 8:42 ` [Bug 215890] New: Regression in 5.18: bcm5974 trackpad causes error: xhci_hcd rejecting DMA map of vmalloc memory Thorsten Leemhuis
2022-05-13 8:24 ` Thorsten Leemhuis
2022-05-13 10:37 ` Christoph Hellwig
2022-05-13 10:47 ` Christoph Hellwig
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