linux-kernel - [linus:master] [drm] f158936b60: leaking-addresses.proc._dyndbg

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Date:   Mon, 24 Oct 2022 11:02:39 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     Jim Cromie <jim.cromie@...il.com>
CC:     <lkp@...ts.01.org>, <lkp@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <linux-kernel@...r.kernel.org>, <amd-gfx@...ts.freedesktop.org>,
        <dri-devel@...ts.freedesktop.org>,
        <intel-gfx@...ts.freedesktop.org>, <nouveau@...ts.freedesktop.org>
Subject: [linus:master] [drm]  f158936b60:
 leaking-addresses.proc._dyndbg_classes.


Greeting,

FYI, we noticed leaking-addresses.proc._dyndbg_classes. due to commit (built with gcc-11):

commit: f158936b60a7874f29cf8de8d83191ad69119c11 ("drm: POC drm on dyndbg - use in core, 2 helpers, 3 drivers.")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: leaking-addresses
version: leaking-addresses-x86_64-4f19048-1_20220518
with following parameters:




on test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz (Haswell) with 16G memory

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


If you fix the issue, kindly add following tag
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Link: https://lore.kernel.org/r/202210241008.f1c162c1-oliver.sang@intel.com


below (1) is not observed in parent tests.


2022-10-23 14:20:04 ./leaking_addresses.pl --output-raw result/scan.out
2022-10-23 14:20:30 ./leaking_addresses.pl --input-raw result/scan.out --squash-by-filename

Total number of results from scan (incl dmesg): 165380

dmesg output:
[    2.177500] mapped IOAPIC to ffffffffff5fb000 (fec00000)

Results squashed by filename (excl dmesg). Displaying [<number of results> <filename>], <example result>
[51 .text.exit] 0xffffffffa03db1c0
[52 .strtab] 0xffffffffa027dde0
[20 .altinstructions] 0xffffffffa059e180
[15 .parainstructions] 0xffffffffa05a0ef0
[49 __mcount_loc] 0xffffffffa03dca20
[51 .rodata.str1.1] 0xffffffffa03dcab0
[51 .data] 0xffffffffa03df000
[3 __dyndbg_classes] 0xffffffffa07b5d10   <--------- (1)
[52 .text] 0xffffffffa03d8000
[1 .rodata.cst16.mask2] 0xffffffffa0559130
[51 .text.startup] 0xffffffffa03db200
[163246 kallsyms] ffffffff81000000 T startup_64
[35 .retpoline_sites] 0xffffffffa05604b7
[6 _ftrace_events] 0xffffffffa04e2d40
[20 __dyndbg] 0xffffffffa03e14e0
[12 .data..read_mostly] 0xffffffffa03e1518
[1 .rodata.cst16.mask1] 0xffffffffa0559120
[2 _ftrace_eval_map] 0xffffffffa1a6edc8
[9 .init.rodata] 0xffffffffa027b000
[4 .altinstr_aux] 0xffffffffa09fe61b
[6 .static_call.text] 0xffffffffa04c360c
[52 .note.Linux] 0xffffffffa03dc024
[50 .rodata] 0xffffffffa03dc100
[51 .fini_array] 0xffffffffa03e1520
[27 __jump_table] 0xffffffffa03de000
[22 __ksymtab] 0xffffffffa0560054
[19 __ksymtab_gpl] 0xffffffffa059e054
[26 __bug_table] 0xffffffffa0432000
[52 .return_sites] 0xffffffffa03dcf50
[52 .note.gnu.build-id] 0xffffffffa03dc000
[38 .text.unlikely] 0xffffffffa03db0ae
[52 modules] btrfs 4415488 1 - Live 0xffffffffa167d000
[7 .static_call_sites] 0xffffffffa1a71578
[6 __tracepoints] 0xffffffffa04e2e80
[51 .init_array] 0xffffffffa027c000
[26 .smp_locks] 0xffffffffa03dca80
[6 .ref.data] 0xffffffffa04e2d60
[20 .altinstr_replacement] 0xffffffffa059dacf
[52 .orc_unwind] 0xffffffffa03dcf84
[2 .noinstr.text] 0xffffffffa09ff6c0
[296 printk_formats] 0xffffffff83a69320 : "CPU_ON"
[40 .init.text] 0xffffffffa027a000
[52 .symtab] 0xffffffffa027d000
[1 _error_injection_whitelist] 0xffffffffa1a74fd0
[5 .init.data] 0xffffffffa045a000
[44 .rodata.str1.8] 0xffffffffa03dc058
[10 __ex_table] 0xffffffffa043f760
[6 __tracepoints_strings] 0xffffffffa04d5f90
[2 .rodata.cst16.bswap_mask] 0xffffffffa0276100
[328 blacklist] 0xffffffff836008f0-0xffffffff83600910	asm_exc_divide_error
[35 .bss] 0xffffffffa03e18c0
[36 .exit.text] 0xffffffffa03db181
[21 __param] 0xffffffffa03dca88
[2 6] inotify wd:18 ino:1ff sdev:19 mask:2 ignored_mask:0 fhandle-bytes:8 fhandle-type:fe f_handle:ff01000000000000
[1 .data..ro_after_init] 0xffffffffa0a79250
[1 ___srcu_struct_ptrs] 0xffffffffa03824e0
[6 __tracepoints_ptrs] 0xffffffffa04d5f84
[31 __ksymtab_strings] 0xffffffffa0560060
[1 .rodata.cst32.byteshift_table] 0xffffffffa0559150
[52 .orc_unwind_ip] 0xffffffffa03dd3c8
[52 .gnu.linkonce.this_module] 0xffffffffa03e1540
[9 .data.once] 0xffffffffa07b5d48



To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        sudo bin/lkp install job.yaml           # job file is attached in this email
        bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
        sudo bin/lkp run generated-yaml-file

        # if come across any failure that blocks the test,
        # please remove ~/.lkp and /lkp dir to run from a clean state.



-- 
0-DAY CI Kernel Test Service
https://01.org/lkp



View attachment "config-6.0.0-rc6-00346-gf158936b60a7" of type "text/plain" (168353 bytes)

View attachment "job-script" of type "text/plain" (5198 bytes)

Download attachment "kmsg.xz" of type "application/x-xz" (23988 bytes)

View attachment "leaking-addresses" of type "text/plain" (2937 bytes)

View attachment "job.yaml" of type "text/plain" (4451 bytes)

View attachment "reproduce" of type "text/plain" (125 bytes)