While running LTP mm test suite on i386 or qemu_i386 this kernel warning has been noticed from stable 5.4 to stable 5.7 branches and mainline 5.8.0-rc4 and linux next. metadata: git branch: master git repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git commit: dcb7fd82c75ee2d6e6f9d8cc71c52519ed52e258 kernel-config: https://builds.tuxbuild.com/zFkvGKyEbfYdZOMzwrbl-w/kernel.config vmlinux: https://builds.tuxbuild.com/zFkvGKyEbfYdZOMzwrbl-w/vmlinux.xz system.map: https://builds.tuxbuild.com/zFkvGKyEbfYdZOMzwrbl-w/System.map steps to reproduce: - boot i386 kernel or qemu_i386 device - cd /opt/ltp - ./runltp -f mm code snippet: file: mm/mremap.c #ifdef CONFIG_HAVE_MOVE_PMD static bool move_normal_pmd(struct vm_area_struct *vma, unsigned long old_addr, ... /* * The destination pmd shouldn't be established, free_pgtables() * should have release it. */ if (WARN_ON(!pmd_none(*new_pmd))) return false; ------------[ cut here ]------------ [ 720.642524] WARNING: CPU: 3 PID: 27091 at mm/mremap.c:211 move_page_tables+0x6ef/0x720 [ 720.650437] Modules linked in: x86_pkg_temp_thermal [ 720.655314] CPU: 3 PID: 27091 Comm: true Not tainted 5.8.0-rc4 #1 [ 720.661408] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.0b 07/27/2017 [ 720.668886] EIP: move_page_tables+0x6ef/0x720 [ 720.673245] Code: 85 0c ff ff ff 8b 45 08 8b 4d d4 05 00 00 40 00 25 00 00 c0 ff 2b 45 08 39 c1 0f 46 c1 89 45 d4 01 f0 89 45 cc e9 d6 fa ff ff <0f> 0b 80 7d be 00 0f 84 80 fd ff ff e9 02 fe ff ff a8 80 0f 84 4d [ 720.691990] EAX: f3250bf8 EBX: f3250bfc ECX: 8c46a067 EDX: 000002fe [ 720.698249] ESI: bfc00000 EDI: f3250bf8 EBP: eea31dd4 ESP: eea31d74 [ 720.704514] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010282 [ 720.711353] CR0: 80050033 CR2: b7d9e3b0 CR3: 33250000 CR4: 003406d0 [ 720.717634] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 720.723952] DR6: fffe0ff0 DR7: 00000400 [ 720.727843] Call Trace: [ 720.730325] setup_arg_pages+0x22b/0x310 [ 720.734277] ? get_random_u32+0x49/0x70 [ 720.738167] ? get_random_u32+0x49/0x70 [ 720.742006] load_elf_binary+0x30e/0x10e0 [ 720.746019] __do_execve_file+0x4c3/0x9f0 [ 720.750031] __ia32_sys_execve+0x25/0x30 [ 720.753959] do_syscall_32_irqs_on+0x3d/0x250 [ 720.758317] ? do_user_addr_fault+0x1a0/0x3c0 [ 720.762701] ? __prepare_exit_to_usermode+0x50/0x1a0 [ 720.767703] ? prepare_exit_to_usermode+0x8/0x20 [ 720.772349] do_fast_syscall_32+0x39/0xb0 [ 720.776361] do_SYSENTER_32+0x15/0x20 [ 720.780028] entry_SYSENTER_32+0x9f/0xf2 [ 720.783951] EIP: 0xb7f1d549 [ 720.786741] Code: Bad RIP value. [ 720.789965] EAX: ffffffda EBX: bfbbc7c0 ECX: 08067420 EDX: bfbbc9f4 [ 720.796225] ESI: 08058a14 EDI: bfbbc7c9 EBP: bfbbc868 ESP: bfbbc798 [ 720.802489] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00000292 [ 720.809276] ---[ end trace bc662e76cba2d081 ]--- [ 724.934902] ------------[ cut here ]------------ ------------[ cut here ]------------ [ 738.099993] WARNING: CPU: 1 PID: 29339 at mm/mremap.c:211 move_page_tables+0x6ef/0x720 [ 738.107928] Modules linked in: x86_pkg_temp_thermal [ 738.112860] CPU: 1 PID: 29339 Comm: true Tainted: G W 5.8.0-rc4 #1 [ 738.120374] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.0b 07/27/2017 [ 738.127904] EIP: move_page_tables+0x6ef/0x720 [ 738.132316] Code: 85 0c ff ff ff 8b 45 08 8b 4d d4 05 00 00 40 00 25 00 00 c0 ff 2b 45 08 39 c1 0f 46 c1 89 45 d4 01 f0 89 45 cc e9 d6 fa ff ff <0f> 0b 80 7d be 00 0f 84 80 fd ff ff e9 02 fe ff ff a8 80 0f 84 4d [ 738.151112] EAX: e0f3bbf8 EBX: e0f3bbfc ECX: 8c4b8067 EDX: 000002fe [ 738.157422] ESI: bfc00000 EDI: e0f3bbf8 EBP: f3809dd4 ESP: f3809d74 [ 738.163756] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010282 [ 738.170587] CR0: 80050033 CR2: b7d9e3b0 CR3: 20f3b000 CR4: 003406d0 [ 738.176895] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 738.183179] DR6: fffe0ff0 DR7: 00000400 [ 738.187019] Call Trace: [ 738.189489] setup_arg_pages+0x22b/0x310 [ 738.193423] ? get_random_u32+0x49/0x70 [ 738.197280] ? get_random_u32+0x49/0x70 [ 738.201119] load_elf_binary+0x30e/0x10e0 [ 738.205159] __do_execve_file+0x4c3/0x9f0 [ 738.209198] __ia32_sys_execve+0x25/0x30 [ 738.213122] do_syscall_32_irqs_on+0x3d/0x250 [ 738.217484] ? do_user_addr_fault+0x1a0/0x3c0 [ 738.221841] ? __prepare_exit_to_usermode+0x50/0x1a0 [ 738.226808] ? prepare_exit_to_usermode+0x8/0x20 [ 738.231427] do_fast_syscall_32+0x39/0xb0 [ 738.235438] do_SYSENTER_32+0x15/0x20 [ 738.239107] entry_SYSENTER_32+0x9f/0xf2 [ 738.243030] EIP: 0xb7f1d549 [ 738.245830] Code: Bad RIP value. [ 738.249067] EAX: ffffffda EBX: bfbbc7c0 ECX: 08067420 EDX: bfbbc9f4 [ 738.255331] ESI: 08058a14 EDI: bfbbc7c9 EBP: bfbbc868 ESP: bfbbc798 [ 738.261595] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00000292 [ 738.268382] ---[ end trace bc662e76cba2d083 ]--- [ 770.832465] true (1218) used greatest stack depth: 5252 bytes left [ 781.451530] ------------[ cut here ]------------ ------------[ cut here ]------------ [ 784.798244] WARNING: CPU: 3 PID: 3053 at mm/mremap.c:211 move_page_tables+0x6ef/0x720 [ 784.806090] Modules linked in: x86_pkg_temp_thermal [ 784.811007] CPU: 3 PID: 3053 Comm: true Tainted: G W 5.8.0-rc4 #1 [ 784.818449] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.0b 07/27/2017 [ 784.825928] EIP: move_page_tables+0x6ef/0x720 [ 784.830341] Code: 85 0c ff ff ff 8b 45 08 8b 4d d4 05 00 00 40 00 25 00 00 c0 ff 2b 45 08 39 c1 0f 46 c1 89 45 d4 01 f0 89 45 cc e9 d6 fa ff ff <0f> 0b 80 7d be 00 0f 84 80 fd ff ff e9 02 fe ff ff a8 80 0f 84 4d [ 784.849138] EAX: e0663bf8 EBX: e0663bfc ECX: 8c463067 EDX: 000002fe [ 784.855456] ESI: bfc00000 EDI: e0663bf8 EBP: f3e39dd4 ESP: f3e39d74 [ 784.861750] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010282 [ 784.868532] CR0: 80050033 CR2: b7d9e3b0 CR3: 20663000 CR4: 003406d0 [ 784.874843] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 784.881160] DR6: fffe0ff0 DR7: 00000400 [ 784.885053] Call Trace: [ 784.887522] setup_arg_pages+0x22b/0x310 [ 784.891483] ? get_random_u32+0x49/0x70 [ 784.895347] ? get_random_u32+0x49/0x70 [ 784.899232] load_elf_binary+0x30e/0x10e0 [ 784.903295] __do_execve_file+0x4c3/0x9f0 [ 784.907359] __ia32_sys_execve+0x25/0x30 [ 784.911339] do_syscall_32_irqs_on+0x3d/0x250 [ 784.915750] ? do_user_addr_fault+0x1a0/0x3c0 [ 784.920161] ? __prepare_exit_to_usermode+0x50/0x1a0 [ 784.925180] ? prepare_exit_to_usermode+0x8/0x20 [ 784.929799] do_fast_syscall_32+0x39/0xb0 [ 784.933862] do_SYSENTER_32+0x15/0x20 [ 784.937580] entry_SYSENTER_32+0x9f/0xf2 [ 784.941557] EIP: 0xb7f1d549 [ 784.944399] Code: Bad RIP value. [ 784.947624] EAX: ffffffda EBX: bfbbc7c0 ECX: 08067420 EDX: bfbbc9f4 [ 784.953944] ESI: 08058a14 EDI: bfbbc7c9 EBP: bfbbc868 ESP: bfbbc798 [ 784.960261] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00000292 [ 784.967097] ---[ end trace bc662e76cba2d085 ]--- [ 792.443236] ------------[ cut here ]------------ full test log, https://lkft.validation.linaro.org/scheduler/job/1541788#L9308 -- Linaro LKFT https://lkft.linaro.org
