Messages in this thread | | | Subject | Re: [LKP] Re: 28307d938f ("percpu: make pcpu_alloc() aware of current gfp .."): BUG: kernel reboot-without-warning in boot stage | From | Li Zhijian <> | Date | Wed, 3 Jun 2020 11:05:35 +0800 |
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On 6/2/20 8:18 PM, Filipe Manana wrote: > On 02/06/20 05:37, Li Zhijian wrote: >> Hi Filipe, >> >> LKP checked blow dmesg as the indicator in this problem >> >>>> [ 0.144174] RAMDISK: [mem 0x7fa2e000-0x7fffffff] >>>> [ 0.144559] ACPI: Early table checksum verification disabled >>>> [ 0.144985] ACPI: RSDP 0x00000000000F5850 000014 (v00 BOCHS ) >>>> [ 0.145424] ACPI: RSDT 0x00000000BFFE15C9 000030 (v01 BOCHS >>>> BXPCRSDT 00000001 BXPC 00000001) >>>> [ 0.146051] ACPI: FACP 0x00000000BFFE149D 000074 (v01 BOCHS >>>> BXPCFACP 00000001 BXPC 00000001) >>>> BUG: kernel reboot-without-warning in boot stage >>>> >> And i have reproduced it with script in attachment. this issue is gone >> when i reverted this commit 28307d938f >> >> Please note that >> - i reproduced it with kernel compiled by gcc-5 >> - i failed to reproduce it in kernel compiled by gcc-7 so far > Odd.
Indeed !
i tested gcc-5 gcc-6 gcc-7, only gcc-5 triggered this issue, kernel built with gcc6 and gcc-7 works well
lizhijian@shao2-debian:~$ gcc-6 --version gcc-6 (Debian 6.5.0-2) 6.5.0 20181026 Copyright (C) 2017 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
lizhijian@shao2-debian:~$ gcc-5 --version gcc-5 (Debian 5.5.0-12) 5.5.0 20171010 Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
lizhijian@shao2-debian:~$ gcc-7 --version gcc-7 (Debian 7.5.0-3) 7.5.0 Copyright (C) 2017 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Thanks Zhijian
> Here I tested with: > > $ gcc --version > gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516 > Copyright (C) 2016 Free Software Foundation, Inc. >
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