Message ID | 20200901094423.100149-1-aneesh.kumar@linux.ibm.com (mailing list archive) |
---|---|
State | Superseded |
Headers | show |
Series | [v2] powerpc/mm: Remove DEBUG_VM_PGTABLE support on powerpc | expand |
Context | Check | Description |
---|---|---|
snowpatch_ozlabs/apply_patch | success | Successfully applied on branch powerpc/merge (f5d3660ab83be7c3dc2c8a5d662bbac7bc1b092f) |
snowpatch_ozlabs/build-ppc64le | warning | Upstream build failed, couldn't test patch |
snowpatch_ozlabs/build-ppc64be | warning | Upstream build failed, couldn't test patch |
snowpatch_ozlabs/build-ppc64e | warning | Upstream build failed, couldn't test patch |
snowpatch_ozlabs/build-pmac32 | warning | Upstream build failed, couldn't test patch |
snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 7 lines checked |
snowpatch_ozlabs/needsstable | success | Patch has no Fixes tags |
On 09/01/2020 03:14 PM, Aneesh Kumar K.V wrote: > The test is broken w.r.t page table update rules and results in kernel > crash as below. Disable the support until we get the tests updated. > > [ 21.083519] kernel BUG at arch/powerpc/mm/pgtable.c:304! > cpu 0x0: Vector: 700 (Program Check) at [c000000c6d1e76c0] > pc: c00000000009a5ec: assert_pte_locked+0x14c/0x380 > lr: c0000000005eeeec: pte_update+0x11c/0x190 > sp: c000000c6d1e7950 > msr: 8000000002029033 > current = 0xc000000c6d172c80 > paca = 0xc000000003ba0000 irqmask: 0x03 irq_happened: 0x01 > pid = 1, comm = swapper/0 > kernel BUG at arch/powerpc/mm/pgtable.c:304! > [link register ] c0000000005eeeec pte_update+0x11c/0x190 > [c000000c6d1e7950] 0000000000000001 (unreliable) > [c000000c6d1e79b0] c0000000005eee14 pte_update+0x44/0x190 > [c000000c6d1e7a10] c000000001a2ca9c pte_advanced_tests+0x160/0x3d8 > [c000000c6d1e7ab0] c000000001a2d4fc debug_vm_pgtable+0x7e8/0x1338 > [c000000c6d1e7ba0] c0000000000116ec do_one_initcall+0xac/0x5f0 > [c000000c6d1e7c80] c0000000019e4fac kernel_init_freeable+0x4dc/0x5a4 > [c000000c6d1e7db0] c000000000012474 kernel_init+0x24/0x160 > [c000000c6d1e7e20] c00000000000cbd0 ret_from_kernel_thread+0x5c/0x6c > > With DEBUG_VM disabled > > [ 20.530152] BUG: Kernel NULL pointer dereference on read at 0x00000000 > [ 20.530183] Faulting instruction address: 0xc0000000000df330 > cpu 0x33: Vector: 380 (Data SLB Access) at [c000000c6d19f700] > pc: c0000000000df330: memset+0x68/0x104 > lr: c00000000009f6d8: hash__pmdp_huge_get_and_clear+0xe8/0x1b0 > sp: c000000c6d19f990 > msr: 8000000002009033 > dar: 0 > current = 0xc000000c6d177480 > paca = 0xc00000001ec4f400 irqmask: 0x03 irq_happened: 0x01 > pid = 1, comm = swapper/0 > [link register ] c00000000009f6d8 hash__pmdp_huge_get_and_clear+0xe8/0x1b0 > [c000000c6d19f990] c00000000009f748 hash__pmdp_huge_get_and_clear+0x158/0x1b0 (unreliable) > [c000000c6d19fa10] c0000000019ebf30 pmd_advanced_tests+0x1f0/0x378 > [c000000c6d19fab0] c0000000019ed088 debug_vm_pgtable+0x79c/0x1244 > [c000000c6d19fba0] c0000000000116ec do_one_initcall+0xac/0x5f0 > [c000000c6d19fc80] c0000000019a4fac kernel_init_freeable+0x4dc/0x5a4 > [c000000c6d19fdb0] c000000000012474 kernel_init+0x24/0x160 > [c000000c6d19fe20] c00000000000cbd0 ret_from_kernel_thread+0x5c/0x6c > 33:mon> > > Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> > --- > arch/powerpc/Kconfig | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig > index 65bed1fdeaad..787e829b6f25 100644 > --- a/arch/powerpc/Kconfig > +++ b/arch/powerpc/Kconfig > @@ -116,7 +116,6 @@ config PPC > # > select ARCH_32BIT_OFF_T if PPC32 > select ARCH_HAS_DEBUG_VIRTUAL > - select ARCH_HAS_DEBUG_VM_PGTABLE > select ARCH_HAS_DEVMEM_IS_ALLOWED > select ARCH_HAS_ELF_RANDOMIZE > select ARCH_HAS_FORTIFY_SOURCE > If support for powerpc is being dropped, please update the features file here as well. They should be in sync. Documentation/features/debug/debug-vm-pgtable/arch-support.txt
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 65bed1fdeaad..787e829b6f25 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -116,7 +116,6 @@ config PPC # select ARCH_32BIT_OFF_T if PPC32 select ARCH_HAS_DEBUG_VIRTUAL - select ARCH_HAS_DEBUG_VM_PGTABLE select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_FORTIFY_SOURCE
The test is broken w.r.t page table update rules and results in kernel crash as below. Disable the support until we get the tests updated. [ 21.083519] kernel BUG at arch/powerpc/mm/pgtable.c:304! cpu 0x0: Vector: 700 (Program Check) at [c000000c6d1e76c0] pc: c00000000009a5ec: assert_pte_locked+0x14c/0x380 lr: c0000000005eeeec: pte_update+0x11c/0x190 sp: c000000c6d1e7950 msr: 8000000002029033 current = 0xc000000c6d172c80 paca = 0xc000000003ba0000 irqmask: 0x03 irq_happened: 0x01 pid = 1, comm = swapper/0 kernel BUG at arch/powerpc/mm/pgtable.c:304! [link register ] c0000000005eeeec pte_update+0x11c/0x190 [c000000c6d1e7950] 0000000000000001 (unreliable) [c000000c6d1e79b0] c0000000005eee14 pte_update+0x44/0x190 [c000000c6d1e7a10] c000000001a2ca9c pte_advanced_tests+0x160/0x3d8 [c000000c6d1e7ab0] c000000001a2d4fc debug_vm_pgtable+0x7e8/0x1338 [c000000c6d1e7ba0] c0000000000116ec do_one_initcall+0xac/0x5f0 [c000000c6d1e7c80] c0000000019e4fac kernel_init_freeable+0x4dc/0x5a4 [c000000c6d1e7db0] c000000000012474 kernel_init+0x24/0x160 [c000000c6d1e7e20] c00000000000cbd0 ret_from_kernel_thread+0x5c/0x6c With DEBUG_VM disabled [ 20.530152] BUG: Kernel NULL pointer dereference on read at 0x00000000 [ 20.530183] Faulting instruction address: 0xc0000000000df330 cpu 0x33: Vector: 380 (Data SLB Access) at [c000000c6d19f700] pc: c0000000000df330: memset+0x68/0x104 lr: c00000000009f6d8: hash__pmdp_huge_get_and_clear+0xe8/0x1b0 sp: c000000c6d19f990 msr: 8000000002009033 dar: 0 current = 0xc000000c6d177480 paca = 0xc00000001ec4f400 irqmask: 0x03 irq_happened: 0x01 pid = 1, comm = swapper/0 [link register ] c00000000009f6d8 hash__pmdp_huge_get_and_clear+0xe8/0x1b0 [c000000c6d19f990] c00000000009f748 hash__pmdp_huge_get_and_clear+0x158/0x1b0 (unreliable) [c000000c6d19fa10] c0000000019ebf30 pmd_advanced_tests+0x1f0/0x378 [c000000c6d19fab0] c0000000019ed088 debug_vm_pgtable+0x79c/0x1244 [c000000c6d19fba0] c0000000000116ec do_one_initcall+0xac/0x5f0 [c000000c6d19fc80] c0000000019a4fac kernel_init_freeable+0x4dc/0x5a4 [c000000c6d19fdb0] c000000000012474 kernel_init+0x24/0x160 [c000000c6d19fe20] c00000000000cbd0 ret_from_kernel_thread+0x5c/0x6c 33:mon> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> --- arch/powerpc/Kconfig | 1 - 1 file changed, 1 deletion(-)