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Date: Wed, 23 Mar 2022 14:40:44 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Zi Yan <zi.yan@...t.com>
Cc: 0day robot <lkp@...el.com>, LKML <linux-kernel@...r.kernel.org>,
lkp@...ts.01.org, Matthew Wilcox <willy@...radead.org>,
linux-mm@...ck.org, Roman Gushchin <roman.gushchin@...ux.dev>,
Shuah Khan <shuah@...nel.org>, Yang Shi <shy828301@...il.com>,
Miaohe Lin <linmiaohe@...wei.com>,
Hugh Dickins <hughd@...gle.com>,
"Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
cgroups@...r.kernel.org, linux-kselftest@...r.kernel.org,
Zi Yan <ziy@...dia.com>
Subject: [mm] 2757cee2d6: UBSAN:shift-out-of-bounds_in_include/linux/log2.h
Greeting,
FYI, we noticed the following commit (built with gcc-9):
commit: 2757cee2d6c6c76f672ec6566ade2dcb8c1605dd ("[RFC PATCH 4/5] mm: truncate: split huge page cache page to a non-zero order if possible.")
url: https://github.com/0day-ci/linux/commits/Zi-Yan/Split-a-huge-page-to-any-lower-order-pages/20220321-222304
base: https://github.com/hnaz/linux-mm master
patch link: https://lore.kernel.org/linux-mm/20220321142128.2471199-5-zi.yan@sent.com
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -cpu Icelake-Server -smp 4 -m 16G
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>
[ 25.633813][ T275] UBSAN: shift-out-of-bounds in include/linux/log2.h:67:13
[ 25.635404][ T275] shift exponent 4294967295 is too large for 32-bit type 'long unsigned int'
[ 25.636781][ T275] CPU: 3 PID: 275 Comm: cron Not tainted 5.17.0-rc8-mm1-00485-g2757cee2d6c6 #1
[ 25.638246][ T275] Call Trace:
[ 25.638768][ T275] dump_stack_lvl (lib/dump_stack.c:107)
[ 25.651568][ T275] dump_stack (lib/dump_stack.c:114)
[ 25.652209][ T275] ubsan_epilogue (lib/ubsan.c:152)
[ 25.652926][ T275] __ubsan_handle_shift_out_of_bounds.cold (arch/x86/include/asm/smap.h:85)
[ 25.654034][ T275] ? lock_release (kernel/locking/lockdep.c:5348 kernel/locking/lockdep.c:5692)
[ 25.654781][ T275] ? __kmap_local_pfn_prot (mm/highmem.c:532)
[ 25.655650][ T275] ? kunmap_local_indexed (mm/highmem.c:600 (discriminator 3))
[ 25.656382][ T275] ? zero_user_segments (mm/highmem.c:408)
[ 25.657110][ T275] greatest_pow_of_two_multiplier.cold (include/linux/log2.h:67 mm/truncate.c:204)
[ 25.658134][ T275] truncate_inode_partial_folio (mm/truncate.c:255)
g System Logging[ 25.659902][ T275] shmem_undo_range (mm/shmem.c:966)
Service...
[ 25.660789][ T275] ? zero_user_segments (mm/highmem.c:408)
[ 25.661744][ T275] ? folio_mark_dirty (mm/page-writeback.c:2717)
[ 25.662480][ T275] ? unlock_page (mm/folio-compat.c:21)
[ 25.663179][ T275] ? __lock_acquire (kernel/locking/lockdep.c:5060)
[ 25.668235][ T275] shmem_truncate_range (mm/shmem.c:1045)
[ 25.668251][ T275] ? setattr_prepare (fs/attr.c:108)
[ 25.668256][ T275] ? mark_held_locks (kernel/locking/lockdep.c:4239)
Startin[ 25.668262][ T275] shmem_setattr (mm/shmem.c:1109)
g /etc/rc.local [ 25.675802][ T275] ? shmem_setattr (mm/shmem.c:1109)
Compatibility...[ 25.676621][ T275] ? current_time (fs/inode.c:2406)
[ 25.677351][ T275] notify_change (fs/attr.c:414)
[ 25.677989][ T275] ? shmem_evict_inode (mm/shmem.c:1077)
[ 25.678735][ T275] ? notify_change (fs/attr.c:414)
[ 25.679481][ T275] ? lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5674)
[ 25.680186][ T275] do_truncate (fs/open.c:67)
[ 25.680843][ T275] ? do_truncate (fs/open.c:67)
[ 25.681520][ T275] ? do_truncate (fs/open.c:67)
[ 25.682230][ T275] do_sys_ftruncate (fs/open.c:197)
[ 25.683001][ T275] __ia32_sys_ftruncate (fs/open.c:204)
[ 25.684027][ T275] __do_fast_syscall_32 (arch/x86/entry/common.c:112 arch/x86/entry/common.c:178)
[ 25.684801][ T275] ? irqentry_exit_to_user_mode (kernel/entry/common.c:324)
[ 25.685720][ T275] do_fast_syscall_32 (arch/x86/entry/common.c:203)
[ 25.686464][ T275] do_SYSENTER_32 (arch/x86/entry/common.c:247)
[ 25.687172][ T275] entry_SYSENTER_32 (arch/x86/entry/entry_32.S:869)
[ 25.687180][ T275] EIP: 0xa7f00549
[ 25.687184][ T275] Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d 76 00 58 b8 77 00 00 00 cd 80 90 8d 76
All code
========
0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi
4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d
a: 10 06 adc %al,(%rsi)
c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi
10: 10 07 adc %al,(%rdi)
12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi
16: 10 08 adc %cl,(%rax)
18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi
1c: 00 00 add %al,(%rax)
1e: 00 00 add %al,(%rax)
20: 00 51 52 add %dl,0x52(%rcx)
23: 55 push %rbp
24: 89 e5 mov %esp,%ebp
26: 0f 34 sysenter
28: cd 80 int $0x80
2a:* 5d pop %rbp <-- trapping instruction
2b: 5a pop %rdx
2c: 59 pop %rcx
2d: c3 retq
2e: 90 nop
2f: 90 nop
30: 90 nop
31: 90 nop
32: 8d 76 00 lea 0x0(%rsi),%esi
35: 58 pop %rax
36: b8 77 00 00 00 mov $0x77,%eax
3b: cd 80 int $0x80
3d: 90 nop
3e: 8d .byte 0x8d
3f: 76 .byte 0x76
Code starting with the faulting instruction
===========================================
0: 5d pop %rbp
1: 5a pop %rdx
2: 59 pop %rcx
3: c3 retq
4: 90 nop
5: 90 nop
6: 90 nop
7: 90 nop
8: 8d 76 00 lea 0x0(%rsi),%esi
b: 58 pop %rax
c: b8 77 00 00 00 mov $0x77,%eax
11: cd 80 int $0x80
13: 90 nop
14: 8d .byte 0x8d
15: 76 .byte 0x76
[ 25.687187][ T275] EAX: ffffffda EBX: 00000003 ECX: 00000004 EDX: 00453000
[ 25.687190][ T275] ESI: 00000004 EDI: 00000002 EBP: 0207e168 ESP: aff7174c
[ 25.687193][ T275] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00000292
[ 25.687280][ T275] ================================================================================
Starting LKP bootstrap...
[ OK ] Started D-Bus System Message Bus.
[ 25.719619] rc.local[280]: mkdir: cannot create directory '/var/lock/lkp-bootstrap.lock': File exists
[ OK ] Started Daily Cleanup of Temporary Directories.
Starting Login Service...
[ OK ] Started Daily apt upgrade and clean activities.
[ OK ] Reached target Timers.
Starting LSB: Execute the kexec -e command to reboot system...
Starting OpenBSD Secure Shell server...
Starting Permit User Sessions...
[ OK ] Started LKP bootstrap.
[ OK ] Started Permit User Sessions.
[ OK ] Started LSB: Start and stop bmc-watchdog.
[ OK ] Started OpenBSD Secure Shell server.
[ OK ] Started LSB: Execute the kexec -e command to reboot system.
[ OK ] Started Login Service.
Starting LSB: Load kernel image with kexec...
LKP: ttyS0: 290: Kernel tests: Boot OK!
LKP: ttyS0: 290: HOSTNAME vm-icl-74, MAC 52:54:00:12:34:56, kernel 5.17.0-rc8-mm1-00485-g2757cee2d6c6 1
[ OK ] Reached target Sound Card.
[ OK ] Reached target Printer.
[ OK ] Started LSB: Load kernel image with kexec.
LKP: ttyS0: 290: /lkp/lkp/src/bin/run-lkp /lkp/jobs/scheduled/vm-icl-74/boot-1-debian-i386-20191205.cgz-2757cee2d6c6c76f672ec6566ade2dcb8c1605dd-20220322-39641-na3mp9-2.yaml
[ 32.682503][ T516] wget (516) used greatest stack depth: 5812 bytes left
[ OK ] Started System Logging Service.
[ 36.389049][ T556] rsync (556) used greatest stack depth: 5772 bytes left
[ 37.653297][ T315] LKP: stdout: 290: Kernel tests: Boot OK!
[ 37.653316][ T315]
[ 40.012523][ T605] wget (605) used greatest stack depth: 5732 bytes left
LKP: ttyS0: 290: LKP: rebooting forcely
[ 42.275963][ T315] LKP: stdout: 290: HOSTNAME vm-icl-74, MAC 52:54:00:12:34:56, kernel 5.17.0-rc8-mm1-00485-g2757cee2d6c6 1
[ 42.275991][ T315]
[ 42.291539][ T315] install debs round one: dpkg -i --force-confdef --force-depends /opt/deb/gawk_1%3a4.1.4+dfsg-1_i386.deb
[ 42.291562][ T315]
[ 42.297409][ T315] Selecting previously unselected package gawk.
[ 42.297426][ T315]
[ 42.314957][ T315] (Reading database ... 16210 files and directories currently installed.)
[ 42.314974][ T315]
[ 42.319689][ T315] Preparing to unpack .../gawk_1%3a4.1.4+dfsg-1_i386.deb ...
[ 42.319710][ T315]
[ 42.323192][ T315] Unpacking gawk (1:4.1.4+dfsg-1) ...
[ 42.323208][ T315]
[ 42.326270][ T315] Setting up gawk (1:4.1.4+dfsg-1) ...
[ 42.326285][ T315]
[ 42.941438][ T290] sysrq: Emergency Sync
[ 42.942418][ T36] Emergency Sync complete
[ 42.943081][ T290] sysrq: Resetting
Kboot worker: lkp-worker04
Elapsed time: 60
kvm=(
qemu-system-x86_64
-enable-kvm
To reproduce:
# build kernel
cd linux
cp config-5.17.0-rc8-mm1-00485-g2757cee2d6c6 .config
make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 INSTALL_MOD_PATH=<mod-install-dir> modules_install
cd <mod-install-dir>
find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email
# 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-5.17.0-rc8-mm1-00485-g2757cee2d6c6" of type "text/plain" (125746 bytes)
View attachment "job-script" of type "text/plain" (4783 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (15936 bytes)
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