Page fault while link_path_walk for path_len > 4060 bytes
From: ankijain at codeaurora.org <hidden>
Date: 2017-09-13 17:05:40
Hi Will
quoted
- { do_page_fault, SIGSEGV, SEGV_MAPERR, "level 3 translation fault" }, + { do_translation_fault, SIGSEGV, SEGV_MAPERR, "level 3 translation fault" }, we will try with above changes and get back to you.
we didn't try yet with above changes. we will start the test soon and update you. Regards, Ankit Jain Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project On 2017-09-13 01:56, Will Deacon wrote:
On Mon, Aug 28, 2017 at 09:53:00AM +0530, ankijain at codeaurora.org wrote:quoted
Hi Will Deacon/ Al viro -->Please find the attached kmsg.txt <3>[17620.275249] BUG: sleeping function called from invalid context at /local/mnt/workspace/lnxbuild/project/trees_in_use/free_tree_platform_manifest_refs_tags_AU_LINUX_ANDROID_LA.UM.5.7.07.01.01.287.725_sdm660_64_commander_26168534/checkout/kernel/msm-4.4/arch/arm64/mm/fault.c:313 <3>[17620.276504] in_atomic(): 0, irqs_disabled(): 0, pid: 10290, name: stress-ng-dirde <6>[17620.298995] ------------[ cut here ]------------ <2>[17620.299009] kernel BUG at /local/mnt/workspace/lnxbuild/project/trees_in_use/free_tree_platform_manifest_refs_tags_AU_LINUX_ANDROID_LA.UM.5.7.07.01.01.287.725_sdm660_64_commander_26168534/checkout/kernel/msm-4.4/kernel/sched/core.c:8528! <6>[17620.306372] ------------[ cut here ]------------ <2>[17620.327239] kernel BUG at /local/mnt/workspace/lnxbuild/project/trees_in_use/free_tree_platform_manifest_refs_tags_AU_LINUX_ANDROID_LA.UM.5.7.07.01.01.287.725_sdm660_64_commander_26168534/checkout/kernel/msm-4.4/kernel/sched/core.c:8528! --> we are using arm64 machine with kernel 4.4. --> can you please guide us, how to capture ESR value while taking the fault? --> - { do_page_fault, SIGSEGV, SEGV_MAPERR, "level 3 translation fault" }, + { do_translation_fault, SIGSEGV, SEGV_MAPERR, "level 3 translation fault" }, we will try with above changes and get back to you.Did you test with this change? Will