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policy=fb_outbound score=0 mlxscore=0 mlxlogscore=999 lowpriorityscore=0 adultscore=0 impostorscore=0 bulkscore=0 spamscore=0 clxscore=1011 phishscore=0 suspectscore=0 priorityscore=1501 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2201110000 definitions=main-2202160102 X-FB-Internal: deliver X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 2194A40011 X-Stat-Signature: egcnhbjpcqtnme5hrnoa3nmby7uu11mk Authentication-Results: imf07.hostedemail.com; dkim=pass header.d=fb.com header.s=facebook header.b=mpH5TjwN; dmarc=pass (policy=reject) header.from=fb.com; spf=none (imf07.hostedemail.com: domain of "prvs=30469153fd=songliubraving@fb.com" has no SPF policy when checking 67.231.145.42) smtp.mailfrom="prvs=30469153fd=songliubraving@fb.com" X-HE-Tag: 1645035396-703892 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: + Nicholas Piggin > On Feb 16, 2022, at 5:00 AM, kernel test robot wr= ote: >=20 >=20 >=20 > Greeting, >=20 > FYI, we noticed the following commit (built with gcc-9): >=20 > commit: fac54e2bfb5be2b0bbf115fe80d45f59fd773048 ("x86/Kconfig: Select HA= VE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HUGE_VMAP") > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master >=20 > in testcase: boot >=20 > on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m = 4G >=20 > caused below changes (please refer to attached dmesg/kmsg for entire log/= backtrace): >=20 >=20 >=20 > If you fix the issue, kindly add following tag > Reported-by: kernel test robot >=20 >=20 > [ 44.587744][ T1] kernel BUG at arch/x86/mm/physaddr.c:76! > [ 44.589159][ T1] invalid opcode: 0000 [#1] SMP PTI > [ 44.590151][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.16.0-1= 1620-gfac54e2bfb5b #1 > [ 44.590151][ T1] EIP: __phys_addr (arch/x86/mm/physaddr.c:76 (discrimina= tor 1))=20 > [ 44.590151][ T1] Code: 00 8d 76 00 83 05 20 92 8a c5 01 83 15 24 92 8a c= 5 00 89 f0 5b 5e 5d c3 8d 74 26 00 83 05 e0 91 8a c5 01 83 15 e4 91 8a c5 0= 0 <0f> 0b 83 05 e8 91 8a c5 01 83 15 ec 91 8a c5 00 83 05 f0 91 8a c5 > All code > =3D=3D=3D=3D=3D=3D=3D=3D > 0: 00 8d 76 00 83 05 add %cl,0x5830076(%rbp) > 6: 20 92 8a c5 01 83 and %dl,-0x7cfe3a76(%rdx) > c: 15 24 92 8a c5 adc $0xc58a9224,%eax > 11: 00 89 f0 5b 5e 5d add %cl,0x5d5e5bf0(%rcx) > 17: c3 retq=20=20=20 > 18: 8d 74 26 00 lea 0x0(%rsi,%riz,1),%esi > 1c: 83 05 e0 91 8a c5 01 addl $0x1,-0x3a756e20(%rip) # 0xfffff= fffc58a9203 > 23: 83 15 e4 91 8a c5 00 adcl $0x0,-0x3a756e1c(%rip) # 0xfffff= fffc58a920e > 2a:* 0f 0b ud2 <-- trapping instruction > 2c: 83 05 e8 91 8a c5 01 addl $0x1,-0x3a756e18(%rip) # 0xfffff= fffc58a921b > 33: 83 15 ec 91 8a c5 00 adcl $0x0,-0x3a756e14(%rip) # 0xfffff= fffc58a9226 > 3a: 83 .byte 0x83 > 3b: 05 f0 91 8a c5 add $0xc58a91f0,%eax >=20 > Code starting with the faulting instruction > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > 0: 0f 0b ud2=20=20=20=20 > 2: 83 05 e8 91 8a c5 01 addl $0x1,-0x3a756e18(%rip) # 0xfffff= fffc58a91f1 > 9: 83 15 ec 91 8a c5 00 adcl $0x0,-0x3a756e14(%rip) # 0xfffff= fffc58a91fc > 10: 83 .byte 0x83 > 11: 05 f0 91 8a c5 add $0xc58a91f0,%eax > [ 44.590151][ T1] EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 000= 00000 > [ 44.590151][ T1] ESI: f7000000 EDI: f7000000 EBP: c6d85dd8 ESP: c6d= 85db4 > [ 44.590151][ T1] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAG= S: 00010246 > [ 44.590151][ T1] CR0: 80050033 CR2: ff7ff000 CR3: 05854000 CR4: 000= 406b0 > [ 44.590151][ T1] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 000= 00000 > [ 44.590151][ T1] DR6: fffe0ff0 DR7: 00000400 > [ 44.590151][ T1] Call Trace: > [ 44.590151][ T1] ? vmap_pages_range_noflush (mm/vmalloc.c:594)=20 > [ 44.590151][ T1] __vmalloc_area_node (mm/vmalloc.c:622 mm/vmalloc.c:2995= )=20 > [ 44.590151][ T1] ? __get_vm_area_node+0xf5/0x200=20 > [ 44.590151][ T1] __vmalloc_node_range (mm/vmalloc.c:3108)=20 > [ 44.590151][ T1] __vmalloc_node (mm/vmalloc.c:3157)=20 > [ 44.590151][ T1] ? txInit.cold (fs/jfs/jfs_txnmgr.c:296)=20 > [ 44.590151][ T1] vmalloc (mm/vmalloc.c:3190)=20 > [ 44.590151][ T1] ? txInit.cold (fs/jfs/jfs_txnmgr.c:296)=20 > [ 44.590151][ T1] txInit.cold (fs/jfs/jfs_txnmgr.c:296)=20 > [ 44.590151][ T1] ? mempool_free (mm/mempool.c:509)=20 > [ 44.590151][ T1] ? mempool_create_node (mm/mempool.c:270)=20 > [ 44.590151][ T1] ? mempool_alloc_slab (mm/mempool.c:517)=20 > [ 44.590151][ T1] ? init_omfs_fs (fs/jfs/super.c:934)=20 > [ 44.590151][ T1] init_jfs_fs (fs/jfs/super.c:959)=20 > [ 44.590151][ T1] ? init_omfs_fs (fs/jfs/super.c:934)=20 > [ 44.590151][ T1] do_one_initcall (init/main.c:1297)=20 > [ 44.590151][ T1] ? rdinit_setup (init/main.c:1354)=20 > [ 44.590151][ T1] ? rcu_read_lock_sched_held (include/linux/lockdep.h:283= kernel/rcu/update.c:125)=20 > [ 44.590151][ T1] do_initcalls (init/main.c:1370 init/main.c:1386)=20 > [ 44.590151][ T1] kernel_init_freeable (init/main.c:1405 init/main.c:1610= )=20 > [ 44.590151][ T1] ? rest_init (init/main.c:1491)=20 > [ 44.590151][ T1] kernel_init (init/main.c:1499)=20 > [ 44.590151][ T1] ret_from_fork (arch/x86/entry/entry_32.S:772)=20 > [ 44.590151][ T1] Modules linked in: > [ 44.630667][ T1] ---[ end trace 0000000000000000 ]--- > [ 44.631743][ T1] EIP: __phys_addr (arch/x86/mm/physaddr.c:76 (discrimina= tor 1))=20 > [ 44.632726][ T1] Code: 00 8d 76 00 83 05 20 92 8a c5 01 83 15 24 92 8a c= 5 00 89 f0 5b 5e 5d c3 8d 74 26 00 83 05 e0 91 8a c5 01 83 15 e4 91 8a c5 0= 0 <0f> 0b 83 05 e8 91 8a c5 01 83 15 ec 91 8a c5 00 83 05 f0 91 8a c5 > All code > =3D=3D=3D=3D=3D=3D=3D=3D > 0: 00 8d 76 00 83 05 add %cl,0x5830076(%rbp) > 6: 20 92 8a c5 01 83 and %dl,-0x7cfe3a76(%rdx) > c: 15 24 92 8a c5 adc $0xc58a9224,%eax > 11: 00 89 f0 5b 5e 5d add %cl,0x5d5e5bf0(%rcx) > 17: c3 retq=20=20=20 > 18: 8d 74 26 00 lea 0x0(%rsi,%riz,1),%esi > 1c: 83 05 e0 91 8a c5 01 addl $0x1,-0x3a756e20(%rip) # 0xfffff= fffc58a9203 > 23: 83 15 e4 91 8a c5 00 adcl $0x0,-0x3a756e1c(%rip) # 0xfffff= fffc58a920e > 2a:* 0f 0b ud2 <-- trapping instruction > 2c: 83 05 e8 91 8a c5 01 addl $0x1,-0x3a756e18(%rip) # 0xfffff= fffc58a921b > 33: 83 15 ec 91 8a c5 00 adcl $0x0,-0x3a756e14(%rip) # 0xfffff= fffc58a9226 > 3a: 83 .byte 0x83 > 3b: 05 f0 91 8a c5 add $0xc58a91f0,%eax >=20 > Code starting with the faulting instruction > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > 0: 0f 0b ud2=20=20=20=20 > 2: 83 05 e8 91 8a c5 01 addl $0x1,-0x3a756e18(%rip) # 0xfffff= fffc58a91f1 > 9: 83 15 ec 91 8a c5 00 adcl $0x0,-0x3a756e14(%rip) # 0xfffff= fffc58a91fc > 10: 83 .byte 0x83 > 11: 05 f0 91 8a c5 add $0xc58a91f0,%eax Hi Nicholas, I guess you know the HAVE_ARCH_HUGE_VMALLOC best.=20 In the commit fac54e2bfb5b ("x86/Kconfig: Select HAVE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HU= GE_VMAP") I was trying to enable huge vmalloc for x86. This report shows that it doesn't really work for 32-bit x86.=20 I also confirmed the following change fix it by 32-bit x86 (by=20 disabling huge vmalloc).=20 Do you think this is something we can easily fix for 32-bit x86? If not, I guess we should just go ahead disable it for 32-bit x86. Thanks, Song diff --git i/arch/x86/Kconfig w/arch/x86/Kconfig index 995f2dc28631..0d08c36dfff1 100644 --- i/arch/x86/Kconfig +++ w/arch/x86/Kconfig @@ -158,7 +158,7 @@ config X86 select HAVE_ALIGNED_STRUCT_PAGE if SLUB select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_HUGE_VMAP if X86_64 || X86_PAE - select HAVE_ARCH_HUGE_VMALLOC if HAVE_ARCH_HUGE_VMAP + select HAVE_ARCH_HUGE_VMALLOC if X86_64 select HAVE_ARCH_JUMP_LABEL select HAVE_ARCH_JUMP_LABEL_RELATIVE select HAVE_ARCH_KASAN if X86_64 >=20 >=20 > To reproduce: >=20 > # build kernel > cd linux > cp config-5.16.0-11620-gfac54e2bfb5b .config > make HOSTCC=3Dgcc-9 CC=3Dgcc-9 ARCH=3Di386 olddefconfig prepare modules_= prepare bzImage modules > make HOSTCC=3Dgcc-9 CC=3Dgcc-9 ARCH=3Di386 INSTALL_MOD_PATH=3D modules_install > cd > find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz >=20 >=20 > git clone https://github.com/intel/lkp-tests.git > cd lkp-tests > bin/lkp qemu -k -m modules.cgz job-script # job-script i= s attached in this email >=20 > # if come across any failure that blocks the test, > # please remove ~/.lkp and /lkp dir to run from a clean state. >=20 >=20 >=20 > --- > 0DAY/LKP+ Test Infrastructure Open Source Technology Ce= nter > https://lists.01.org/hyperkitty/list/lkp@lists.01.org Intel Corpor= ation >=20 > Thanks, > Oliver Sang >=20 >