Messages in this thread | | | Subject | Re: [PATCH V2 2/2] mm/pgtable/debug: Add test validating architecture page table helpers | From | Christophe Leroy <> | Date | Thu, 12 Sep 2019 17:52:21 +0200 |
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Le 12/09/2019 à 17:36, Christophe Leroy a écrit : > > > Le 12/09/2019 à 17:00, Christophe Leroy a écrit : >> >> >> On 09/12/2019 06:02 AM, Anshuman Khandual wrote: >>> This adds a test module which will validate architecture page table >>> helpers >>> and accessors regarding compliance with generic MM semantics >>> expectations. >>> This will help various architectures in validating changes to the >>> existing >>> page table helpers or addition of new ones. >>> >>> Test page table and memory pages creating it's entries at various >>> level are >>> all allocated from system memory with required alignments. If memory >>> pages >>> with required size and alignment could not be allocated, then all >>> depending >>> individual tests are skipped. >> >> Build failure on powerpc book3s/32. This is because asm/highmem.h is >> missing. It can't be included from asm/book3s/32/pgtable.h because it >> creates circular dependency. So it has to be included from >> mm/arch_pgtable_test.c > > In fact it is <linux/highmem.h> that needs to be added, adding > <asm/highmem.h> directly provokes build failure at link time. >
I get the following failure,
[ 0.704685] ------------[ cut here ]------------ [ 0.709239] initcall arch_pgtable_tests_init+0x0/0x228 returned with preemption imbalance [ 0.717539] WARNING: CPU: 0 PID: 1 at init/main.c:952 do_one_initcall+0x18c/0x1d4 [ 0.724922] CPU: 0 PID: 1 Comm: swapper Not tainted 5.3.0-rc7-s3k-dev-00880-g28fd02a838e5-dirty #2307 [ 0.734070] NIP: c070e674 LR: c070e674 CTR: c001292c [ 0.739084] REGS: df4a5dd0 TRAP: 0700 Not tainted (5.3.0-rc7-s3k-dev-00880-g28fd02a838e5-dirty) [ 0.747975] MSR: 00029032 <EE,ME,IR,DR,RI> CR: 28000222 XER: 00000000 [ 0.754628] [ 0.754628] GPR00: c070e674 df4a5e88 df4a0000 0000004e 0000000a 00000000 000000ca 38207265 [ 0.754628] GPR08: 00001032 00000800 00000000 00000000 22000422 00000000 c0004a7c 00000000 [ 0.754628] GPR16: 00000000 00000000 00000000 00000000 00000000 c0810000 c0800000 c0816f30 [ 0.754628] GPR24: c070dc20 c074702c 00000006 0000009c 00000000 c0724494 c074e140 00000000 [ 0.789339] NIP [c070e674] do_one_initcall+0x18c/0x1d4 [ 0.794435] LR [c070e674] do_one_initcall+0x18c/0x1d4 [ 0.799437] Call Trace: [ 0.801867] [df4a5e88] [c070e674] do_one_initcall+0x18c/0x1d4 (unreliable) [ 0.808694] [df4a5ee8] [c070e8c0] kernel_init_freeable+0x204/0x2dc [ 0.814830] [df4a5f28] [c0004a94] kernel_init+0x18/0x110 [ 0.820107] [df4a5f38] [c00122ac] ret_from_kernel_thread+0x14/0x1c [ 0.826220] Instruction dump: [ 0.829161] 4beb1069 7d2000a6 61298000 7d200124 89210008 2f890000 41be0048 3c60c06a [ 0.836849] 38a10008 7fa4eb78 3863cacc 4b915115 <0fe00000> 4800002c 81220070 712a0004 [ 0.844723] ---[ end trace 969d686308d40b33 ]---
Then starting init fails:
[ 3.894074] Run /init as init process [ 3.898403] Failed to execute /init (error -14) [ 3.903009] Run /sbin/init as init process [ 3.907172] Run /etc/init as init process [ 3.911251] Run /bin/init as init process [ 3.915513] Run /bin/sh as init process [ 3.919471] Starting init: /bin/sh exists but couldn't execute it (error -14) [ 3.926732] Kernel panic - not syncing: No working init found. Try passing init= option to kernel. See Linux Documentation/admin-guide/init.rst for guidance. [ 3.940864] CPU: 0 PID: 1 Comm: init Tainted: G W 5.3.0-rc7-s3k-dev-00880-g28fd02a838e5-dirty #2307 [ 3.951165] Call Trace: [ 3.953617] [df4a5ec8] [c002392c] panic+0x12c/0x320 (unreliable) [ 3.959621] [df4a5f28] [c0004b8c] rootfs_mount+0x0/0x2c [ 3.964849] [df4a5f38] [c00122ac] ret_from_kernel_thread+0x14/0x1c
Christophe
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