topic key blob module on iMX6UL in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/key-blob-module-on-iMX6UL/m-p/820891#M126389 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P></P><P>I try running the following NXP example on <STRONG>iMX6UL</STRONG> board (<STRONG>Debian - Linux 4.9.11</STRONG>) :</P><P><A href="https://community.nxp.com/docs/DOC-335353">Generate Blob Under Linux</A>&nbsp;</P><P></P><P>The driver (<STRONG>key_blob_module.ko</STRONG>) and the test tools (<STRONG>kb_tes</STRONG>t) are compiled with <STRONG>gcc-linaro-6.3.1-2017.05-x86_64_arm-linux-gnueabihf</STRONG> toolchain.</P><P></P><P>Once the driver is insmod'ed, I run the test tool and I get the following kernel message :</P><P><SPAN style="color: #800000;">[10970.490974] <STRONG>Unable to handle kernel paging request at virtual address</STRONG> a0011ae0</SPAN><BR /><SPAN style="color: #800000;">[10970.499570] pgd = 9c914000</SPAN><BR /><SPAN style="color: #800000;">[10970.501012] [a0011ae0] *pgd=00000000</SPAN><BR /><SPAN style="color: #800000;">[10970.503365] Internal error: Oops: 5 [#5] PREEMPT SMP ARM</SPAN><BR /><SPAN style="color: #800000;">[10970.507406] Modules linked in: key_blob_module(O) alg_test(O+) ip_tables [last unloaded: key_blob_modul]</SPAN><BR /><SPAN style="color: #800000;">[10970.515899] CPU: 0 PID: 536 Comm: kb_test Tainted: P&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D&nbsp;&nbsp;&nbsp; O&nbsp;&nbsp;&nbsp; 4.9.11-02286-gaa81171-dirty #3</SPAN><BR /><SPAN style="color: #800000;">[10970.523592] Hardware name: Freescale i.MX6 UltraLite (Device Tree)</SPAN><BR /><SPAN style="color: #800000;">[10970.528505] task: 9c559080 task.stack: 9c5d6000</SPAN><BR /><SPAN style="color: #800000;">[10970.531798] PC is at <STRONG>dma_cache_maint_page</STRONG>+0x50/0x12c</SPAN><BR /><SPAN style="color: #800000;">[10970.535506] LR is at mem_map+0x0/0x4</SPAN><BR /><SPAN style="color: #800000;">[10970.537823] pc : [&lt;80113420&gt;]&nbsp;&nbsp;&nbsp; lr : [&lt;80fd3480&gt;]&nbsp;&nbsp;&nbsp; psr: 60080013</SPAN><BR /><SPAN style="color: #800000;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; sp : 9c5d7df8&nbsp; ip : 9fbf7000&nbsp; fp : 80f030d4</SPAN><BR /><SPAN style="color: #800000;">[10970.546733] r10: 00101000&nbsp; r9 : 000a0d57&nbsp; r8 : 80117bb8</SPAN><BR /><SPAN style="color: #800000;">[10970.550693] r7 : 00000002&nbsp; r6 : 00000000&nbsp; r5 : 00000050&nbsp; r4 : 00020d57</SPAN><BR /><SPAN style="color: #800000;">[10970.555955] r3 : 00000002&nbsp; r2 : 00000050&nbsp; r1 : 00080000&nbsp; r0 : 0041aae0</SPAN><BR /><SPAN style="color: #800000;">[10970.561222] Flags: nZCv&nbsp; IRQs on&nbsp; FIQs on&nbsp; Mode SVC_32&nbsp; ISA ARM&nbsp; Segment none</SPAN><BR /><SPAN style="color: #800000;">[10970.567092] Control: 10c53c7d&nbsp; Table: 9c91406a&nbsp; DAC: 00000051</SPAN><BR /><SPAN style="color: #800000;">[10970.571571] Process kb_test (pid: 536, stack limit = 0x9c5d6210)</SPAN><BR /><SPAN style="color: #800000;">[10970.576311] Stack: (0x9c5d7df8 to 0x9c5d8000)</SPAN><BR /><SPAN style="color: #800000;">[10970.579408] 7de0:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 80f06704 80fd3480</SPAN><BR /><SPAN style="color: #800000;">[10970.586343] 7e00: 80117bb8 00000000 a0011ae0 00000050 00000002 80fd3480 9cace140 00101000</SPAN><BR /><SPAN style="color: #800000;">[10970.593275] 7e20: 00000000 80113524 80117bb8 00101000 00000000 a0011ae0 9c4b9010 00000000</SPAN><BR /><SPAN style="color: #800000;">[10970.600205] 7e40: f0000020 80113638 9c4b9010 801135d4 00000050 806dd9d4 00000002 00000000</SPAN><BR /><SPAN style="color: #800000;">[10970.607135] 7e60: 00000000 00000000 00000000 00000000 9c01da5c 9c0f57b4 804df948 00000000</SPAN><BR /><SPAN style="color: #800000;">[10970.614066] 7e80: 00000000 80938fd8 9c01da5c 809343e0 9c446940 00000020 9c446940 9c4b9010</SPAN><BR /><SPAN style="color: #800000;">[10970.620996] 7ea0: 00000000 8093925c 00000000 9c4b9010 00000000 00000020 7f03ed80 7ebc3c38</SPAN><BR /><SPAN style="color: #800000;">[10970.627927] 7ec0: 9c5d6000 00000000 00000000 7f03e134 00000000 a0d57000 00000020 7f03eb34</SPAN><BR /><SPAN style="color: #800000;">[10970.634858] 7ee0: 9c630840 00000000 7ebc3c38 00000000 00000051 9c630840 c0084b00 7f03e3e0</SPAN><BR /><SPAN style="color: #800000;">[10970.641789] 7f00: 00000020 00000050 00000000 7ebc3c38 9c9f0ae8 80211868 582b0b69 1312d000</SPAN><BR /><SPAN style="color: #800000;">[10970.648719] 7f20: 582b0b69 1312d000 00000000 00000000 000000be 9c6399c0 00000000 9c2f8030</SPAN><BR /><SPAN style="color: #800000;">[10970.655650] 7f40: 00000002 00000061 9c6399c8 00000000 00000000 80200608 00000000 00000000</SPAN><BR /><SPAN style="color: #800000;">[10970.662584] 7f60: 00000001 9c6399c0 9c6399c0 9c630840 00000003 9c630840 c0084b00 7ebc3c38</SPAN><BR /><SPAN style="color: #800000;">[10970.669515] 7f80: 9c5d6000 00000000 00000000 80212124 00000020 00020d54 7ebc3efc 00000036</SPAN><BR /><SPAN style="color: #800000;">[10970.676446] 7fa0: 80107944 80107780 00000020 00020d54 00000003 c0084b00 7ebc3c38 00020d50</SPAN><BR /><SPAN style="color: #800000;">[10970.683377] 7fc0: 00000020 00020d54 7ebc3efc 00000036 7ebc3efc 7ebc3ef3 76ff8000 00000000</SPAN><BR /><SPAN style="color: #800000;">[10970.690309] 7fe0: 00020d0c 7ebc3c34 00010889 76f71716 20080030 00000003 af76ad6f f7ffd9ff</SPAN><BR /><SPAN style="color: #800000;">[10970.697280] [&lt;80113420&gt;] (<STRONG>dma_cache_maint_page</STRONG>) from [&lt;80113524&gt;] (__dma_page_cpu_to_dev+0x28/0x94)</SPAN><BR /><SPAN style="color: #800000;">[10970.705103] [&lt;80113524&gt;] (__dma_page_cpu_to_dev) from [&lt;80113638&gt;] (arm_dma_map_page+0x64/0x68)</SPAN><BR /><SPAN style="color: #800000;">[10970.712574] [&lt;80113638&gt;] (arm_dma_map_page) from [&lt;806dd9d4&gt;] (sm_keystore_slot_export+0x150/0x3bc)</SPAN><BR /><SPAN style="color: #800000;">[10970.720409] [&lt;806dd9d4&gt;] (sm_keystore_slot_export) from [&lt;7f03e134&gt;] (kb_encap+0xd0/0x114 [key_blob_mod)</SPAN><BR /><SPAN style="color: #800000;">[10970.729037] [&lt;7f03e134&gt;] (kb_encap [key_blob_module]) from [&lt;7f03e3e0&gt;] (kb_ioctl+0x148/0x1b4 [key_blob)</SPAN><BR /><SPAN style="color: #800000;">[10970.737997] [&lt;7f03e3e0&gt;] (kb_ioctl [key_blob_module]) from [&lt;80211868&gt;] (do_vfs_ioctl+0x9c/0x924)</SPAN><BR /><SPAN style="color: #800000;">[10970.745637] [&lt;80211868&gt;] (do_vfs_ioctl) from [&lt;80212124&gt;] (SyS_ioctl+0x34/0x5c)</SPAN><BR /><SPAN style="color: #800000;">[10970.751713] [&lt;80212124&gt;] (SyS_ioctl) from [&lt;80107780&gt;] (ret_fast_syscall+0x0/0x3c)</SPAN><BR /><SPAN style="color: #800000;">[10970.758039] Code: e040000c e58de004 e08192c0 e0494004 (e79c2284) </SPAN><BR /><SPAN style="color: #800000;">[10970.762901] ---[ end trace dbcdbffbe30a56bb ]---</SPAN></P><P></P><P>Any idea about what could be wrong ? Apparently the problem comes from "dma_cache_maint_page" function...</P><P></P><P>Julien</P></BODY></HTML> Wed, 03 Oct 2018 10:45:00 GMT julienpanis 2018-10-03T10:45:00Z key blob module on iMX6UL https://community.nxp.com/t5/i-MX-Processors/key-blob-module-on-iMX6UL/m-p/820891#M126389 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P></P><P>I try running the following NXP example on <STRONG>iMX6UL</STRONG> board (<STRONG>Debian - Linux 4.9.11</STRONG>) :</P><P><A href="https://community.nxp.com/docs/DOC-335353">Generate Blob Under Linux</A>&nbsp;</P><P></P><P>The driver (<STRONG>key_blob_module.ko</STRONG>) and the test tools (<STRONG>kb_tes</STRONG>t) are compiled with <STRONG>gcc-linaro-6.3.1-2017.05-x86_64_arm-linux-gnueabihf</STRONG> toolchain.</P><P></P><P>Once the driver is insmod'ed, I run the test tool and I get the following kernel message :</P><P><SPAN style="color: #800000;">[10970.490974] <STRONG>Unable to handle kernel paging request at virtual address</STRONG> a0011ae0</SPAN><BR /><SPAN style="color: #800000;">[10970.499570] pgd = 9c914000</SPAN><BR /><SPAN style="color: #800000;">[10970.501012] [a0011ae0] *pgd=00000000</SPAN><BR /><SPAN style="color: #800000;">[10970.503365] Internal error: Oops: 5 [#5] PREEMPT SMP ARM</SPAN><BR /><SPAN style="color: #800000;">[10970.507406] Modules linked in: key_blob_module(O) alg_test(O+) ip_tables [last unloaded: key_blob_modul]</SPAN><BR /><SPAN style="color: #800000;">[10970.515899] CPU: 0 PID: 536 Comm: kb_test Tainted: P&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D&nbsp;&nbsp;&nbsp; O&nbsp;&nbsp;&nbsp; 4.9.11-02286-gaa81171-dirty #3</SPAN><BR /><SPAN style="color: #800000;">[10970.523592] Hardware name: Freescale i.MX6 UltraLite (Device Tree)</SPAN><BR /><SPAN style="color: #800000;">[10970.528505] task: 9c559080 task.stack: 9c5d6000</SPAN><BR /><SPAN style="color: #800000;">[10970.531798] PC is at <STRONG>dma_cache_maint_page</STRONG>+0x50/0x12c</SPAN><BR /><SPAN style="color: #800000;">[10970.535506] LR is at mem_map+0x0/0x4</SPAN><BR /><SPAN style="color: #800000;">[10970.537823] pc : [&lt;80113420&gt;]&nbsp;&nbsp;&nbsp; lr : [&lt;80fd3480&gt;]&nbsp;&nbsp;&nbsp; psr: 60080013</SPAN><BR /><SPAN style="color: #800000;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; sp : 9c5d7df8&nbsp; ip : 9fbf7000&nbsp; fp : 80f030d4</SPAN><BR /><SPAN style="color: #800000;">[10970.546733] r10: 00101000&nbsp; r9 : 000a0d57&nbsp; r8 : 80117bb8</SPAN><BR /><SPAN style="color: #800000;">[10970.550693] r7 : 00000002&nbsp; r6 : 00000000&nbsp; r5 : 00000050&nbsp; r4 : 00020d57</SPAN><BR /><SPAN style="color: #800000;">[10970.555955] r3 : 00000002&nbsp; r2 : 00000050&nbsp; r1 : 00080000&nbsp; r0 : 0041aae0</SPAN><BR /><SPAN style="color: #800000;">[10970.561222] Flags: nZCv&nbsp; IRQs on&nbsp; FIQs on&nbsp; Mode SVC_32&nbsp; ISA ARM&nbsp; Segment none</SPAN><BR /><SPAN style="color: #800000;">[10970.567092] Control: 10c53c7d&nbsp; Table: 9c91406a&nbsp; DAC: 00000051</SPAN><BR /><SPAN style="color: #800000;">[10970.571571] Process kb_test (pid: 536, stack limit = 0x9c5d6210)</SPAN><BR /><SPAN style="color: #800000;">[10970.576311] Stack: (0x9c5d7df8 to 0x9c5d8000)</SPAN><BR /><SPAN style="color: #800000;">[10970.579408] 7de0:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 80f06704 80fd3480</SPAN><BR /><SPAN style="color: #800000;">[10970.586343] 7e00: 80117bb8 00000000 a0011ae0 00000050 00000002 80fd3480 9cace140 00101000</SPAN><BR /><SPAN style="color: #800000;">[10970.593275] 7e20: 00000000 80113524 80117bb8 00101000 00000000 a0011ae0 9c4b9010 00000000</SPAN><BR /><SPAN style="color: #800000;">[10970.600205] 7e40: f0000020 80113638 9c4b9010 801135d4 00000050 806dd9d4 00000002 00000000</SPAN><BR /><SPAN style="color: #800000;">[10970.607135] 7e60: 00000000 00000000 00000000 00000000 9c01da5c 9c0f57b4 804df948 00000000</SPAN><BR /><SPAN style="color: #800000;">[10970.614066] 7e80: 00000000 80938fd8 9c01da5c 809343e0 9c446940 00000020 9c446940 9c4b9010</SPAN><BR /><SPAN style="color: #800000;">[10970.620996] 7ea0: 00000000 8093925c 00000000 9c4b9010 00000000 00000020 7f03ed80 7ebc3c38</SPAN><BR /><SPAN style="color: #800000;">[10970.627927] 7ec0: 9c5d6000 00000000 00000000 7f03e134 00000000 a0d57000 00000020 7f03eb34</SPAN><BR /><SPAN style="color: #800000;">[10970.634858] 7ee0: 9c630840 00000000 7ebc3c38 00000000 00000051 9c630840 c0084b00 7f03e3e0</SPAN><BR /><SPAN style="color: #800000;">[10970.641789] 7f00: 00000020 00000050 00000000 7ebc3c38 9c9f0ae8 80211868 582b0b69 1312d000</SPAN><BR /><SPAN style="color: #800000;">[10970.648719] 7f20: 582b0b69 1312d000 00000000 00000000 000000be 9c6399c0 00000000 9c2f8030</SPAN><BR /><SPAN style="color: #800000;">[10970.655650] 7f40: 00000002 00000061 9c6399c8 00000000 00000000 80200608 00000000 00000000</SPAN><BR /><SPAN style="color: #800000;">[10970.662584] 7f60: 00000001 9c6399c0 9c6399c0 9c630840 00000003 9c630840 c0084b00 7ebc3c38</SPAN><BR /><SPAN style="color: #800000;">[10970.669515] 7f80: 9c5d6000 00000000 00000000 80212124 00000020 00020d54 7ebc3efc 00000036</SPAN><BR /><SPAN style="color: #800000;">[10970.676446] 7fa0: 80107944 80107780 00000020 00020d54 00000003 c0084b00 7ebc3c38 00020d50</SPAN><BR /><SPAN style="color: #800000;">[10970.683377] 7fc0: 00000020 00020d54 7ebc3efc 00000036 7ebc3efc 7ebc3ef3 76ff8000 00000000</SPAN><BR /><SPAN style="color: #800000;">[10970.690309] 7fe0: 00020d0c 7ebc3c34 00010889 76f71716 20080030 00000003 af76ad6f f7ffd9ff</SPAN><BR /><SPAN style="color: #800000;">[10970.697280] [&lt;80113420&gt;] (<STRONG>dma_cache_maint_page</STRONG>) from [&lt;80113524&gt;] (__dma_page_cpu_to_dev+0x28/0x94)</SPAN><BR /><SPAN style="color: #800000;">[10970.705103] [&lt;80113524&gt;] (__dma_page_cpu_to_dev) from [&lt;80113638&gt;] (arm_dma_map_page+0x64/0x68)</SPAN><BR /><SPAN style="color: #800000;">[10970.712574] [&lt;80113638&gt;] (arm_dma_map_page) from [&lt;806dd9d4&gt;] (sm_keystore_slot_export+0x150/0x3bc)</SPAN><BR /><SPAN style="color: #800000;">[10970.720409] [&lt;806dd9d4&gt;] (sm_keystore_slot_export) from [&lt;7f03e134&gt;] (kb_encap+0xd0/0x114 [key_blob_mod)</SPAN><BR /><SPAN style="color: #800000;">[10970.729037] [&lt;7f03e134&gt;] (kb_encap [key_blob_module]) from [&lt;7f03e3e0&gt;] (kb_ioctl+0x148/0x1b4 [key_blob)</SPAN><BR /><SPAN style="color: #800000;">[10970.737997] [&lt;7f03e3e0&gt;] (kb_ioctl [key_blob_module]) from [&lt;80211868&gt;] (do_vfs_ioctl+0x9c/0x924)</SPAN><BR /><SPAN style="color: #800000;">[10970.745637] [&lt;80211868&gt;] (do_vfs_ioctl) from [&lt;80212124&gt;] (SyS_ioctl+0x34/0x5c)</SPAN><BR /><SPAN style="color: #800000;">[10970.751713] [&lt;80212124&gt;] (SyS_ioctl) from [&lt;80107780&gt;] (ret_fast_syscall+0x0/0x3c)</SPAN><BR /><SPAN style="color: #800000;">[10970.758039] Code: e040000c e58de004 e08192c0 e0494004 (e79c2284) </SPAN><BR /><SPAN style="color: #800000;">[10970.762901] ---[ end trace dbcdbffbe30a56bb ]---</SPAN></P><P></P><P>Any idea about what could be wrong ? Apparently the problem comes from "dma_cache_maint_page" function...</P><P></P><P>Julien</P></BODY></HTML> Wed, 03 Oct 2018 10:45:00 GMT https://community.nxp.com/t5/i-MX-Processors/key-blob-module-on-iMX6UL/m-p/820891#M126389 julienpanis 2018-10-03T10:45:00Z Re: key blob module on iMX6UL https://community.nxp.com/t5/i-MX-Processors/key-blob-module-on-iMX6UL/m-p/820892#M126390 <HTML><HEAD></HEAD><BODY><P>Hello Julien,</P><P></P><P>You can check the following document</P><P></P><P><A href="https://community.nxp.com/docs/DOC-341035">https://community.nxp.com/docs/DOC-341035</A>&nbsp;</P></BODY></HTML> Wed, 10 Oct 2018 16:48:33 GMT https://community.nxp.com/t5/i-MX-Processors/key-blob-module-on-iMX6UL/m-p/820892#M126390 jamesbone 2018-10-10T16:48:33Z