Re: [PATCH v7.2 07/13] ARC: Linux Syscall Interface
On 7/8/20 9:31 AM, Adhemerval Zanella via Libc-alpha wrote:
>
> On 07/07/2020 17:55, Vineet Gupta via Libc-alpha wrote:
>> ---
>>Changes since v7.1:
>> - Added a few more 32-bit time_t syscalls to fixup-asm-unistd.h
>>and regen arch-syscall.h to remove them: __NR_timer{g,s}ettime,
>>__NR_clock_{gettime,nanosleep,settime}
>> - minimal/annotated list of 32-bit syscall aliases in ARC sysdeps.h
>>for 64-bit time_t support
>> - Open-coded SYS_ify() but retained the macro as used by common
>>code
>> - No functional changes in generated dsos.
>>Changes since v7:
>> - used long int (iso int) in sysdep.h/syscall_error for handling
>> registers
> LGTM, thanks.
>
> Reviewed-by: Adhemerval Zanella
Thx a lot. I now have Reviewed-by tags on all ARC patches so we just need the
sysvipc/semctl y2038 patches to hit upstream before I can commit.
Thx,
-Vineet
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[mm/debug_vm_pgtable] a97a171093: BUG:unable_to_handle_page_fault_for_address
Greeting,
FYI, we noticed the following commit (built with gcc-9):
commit: a97a17109332c3a9e361553adfa383c1e5205f3b ("[PATCH V4 2/4]
mm/debug_vm_pgtable: Add tests validating advanced arch page table helpers")
url:
https://github.com/0day-ci/linux/commits/Anshuman-Khandual/mm-debug_vm_pgtable-Add-some-more-tests/20200706-085212
base: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git
dcb7fd82c75ee2d6e6f9d8cc71c52519ed52e258
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
caused below changes (please refer to attached dmesg/kmsg for entire
log/backtrace):
+-+++
| | 30011bfca7 | a97a171093 |
+-+++
| boot_successes | 4 | 0 |
| boot_failures | 0 | 4 |
| BUG:unable_to_handle_page_fault_for_address | 0 | 4 |
| Oops:#[##] | 0 | 4 |
| RIP:hugetlb_advanced_tests | 0 | 4 |
| Kernel_panic-not_syncing:Fatal_exception| 0 | 4 |
+-+++
If you fix the issue, kindly add following tag
Reported-by: kernel test robot
[ 94.349598] BUG: unable to handle page fault for address: ed10a7ffddff
[ 94.351039] #PF: supervisor read access in kernel mode
[ 94.352172] #PF: error_code(0x) - not-present page
[ 94.353256] PGD 43ffed067 P4D 43ffed067 PUD 43fdee067 PMD 0
[ 94.354484] Oops: [#1] SMP KASAN
[ 94.355238] CPU: 1 PID: 1 Comm: swapper/0 Not tainted
5.8.0-rc4-2-ga97a17109332c #1
[ 94.360456] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.12.0-1 04/01/2014
[ 94.361950] RIP: 0010:hugetlb_advanced_tests+0x137/0x699
[ 94.363026] Code: 8b 13 4d 85 f6 75 0b 48 ff 05 2c e4 6a 01 31 ed eb 41 bf
f8 ff ff ff ba ff ff 37 00 4c 01 f7 48 c1 e2 2a 48 89 f9 48 c1 e9 03 <80> 3c 11
00 74 05 e8 cd c0 67 fa ba f8 ff ff ff 49 8b 2c 16 48 85
[ 94.366592] RSP: :c9047d30 EFLAGS: 00010a06
[ 94.367693] RAX: 11049b80 RBX: 888380525308 RCX: 1110a7ffddff
[ 94.369215] RDX: dc00 RSI: 111087ffdc00 RDI: 88853ffeeff8
[ 94.370693] RBP: 0018e510 R08: 0025 R09: 0001
[ 94.372165] R10: 888380523c07 R11: ed10700a4780 R12: 88843208e510
[ 94.373674] R13: 0025 R14: 88843ffef000 R15: 31e01ae61000
[ 94.375147] FS: () GS:8883a380()
knlGS:
[ 94.376883] CS: 0010 DS: ES: CR0: 80050033
[ 94.378051] CR2: ed10a7ffddff CR3: 04e15000 CR4: 000406a0
[ 94.379522] Call Trace:
[ 94.380073] debug_vm_pgtable+0xd81/0x2029
[ 94.380871] ? pmd_advanced_tests+0x621/0x621
[ 94.381819] do_one_initcall+0x1eb/0xbd0
[ 94.382551] ? trace_event_raw_event_initcall_finish+0x240/0x240
[ 94.383634] ? rcu_read_lock_sched_held+0xb9/0x110
[ 94.388727] ? rcu_read_lock_held+0xd0/0xd0
[ 94.389604] ? __kasan_check_read+0x1d/0x30
[ 94.390485] kernel_init_freeable+0x430/0x4f8
[ 94.391416] ? rest_init+0x3f8/0x3f8
[ 94.392185] kernel_init+0x14/0x1e8
[ 94.392918] ret_from_fork+0x22/0x30
[ 94.393662] Modules linked in:
[ 94.394289] CR2: ed10a7ffddff
[ 94.395000] ---[ end trace 8ca5a1655dfb8c39 ]---
To reproduce:
# build kernel
cd linux
cp config-5.8.0-rc4-2-ga97a17109332c .config
make HOSTCC=gcc-9 CC=gcc-9 ARCH=x86_64 olddefconfig prepare
modules_prepare bzImage
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k job-script # job-script is attached in this
email
Thanks,
lkp
#
# Automatically generated file; DO NOT EDIT.
# Linux/x86_64 5.8.0-rc4 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="gcc-9 (Debian 9.3.0-14) 9.3.0"
CONFIG_CC_IS_GCC=y
CONFIG_GCC_VERSION=90300
CONFIG_LD_VERSION=23400
CONFIG_CLANG_VERSION=0
CONFIG_CC_CAN_LINK=y
CONFIG_CC_CAN_LINK_STATIC=y
CONFIG_CC_HAS_ASM_GOTO=y
CONFIG_CC_HAS_ASM_INLINE=y
CONFIG_CONSTRUCTORS=y
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_TABLE_SORT=y
CONFIG_THREAD_INFO_IN_TASK=y
#
# General setup
#
CONFIG_INIT_ENV_ARG_LIMIT=32
# CONFIG_COMPILE_TEST is not set
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_BUILD_SALT=""
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
# CONFIG_KERNEL_GZIP is not set
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_LZMA is not set
CONFIG_KERNEL_XZ=y
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
CONFIG_DEFAULT_INIT=""
CONFIG_DEFAULT_HOSTNAME="(none)"
# CONFIG_SYSVIPC is not set
# CONFIG_P
