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/pkg/linux/x86_64-rhel-8.3/gcc-12/2e22ca3c1f2a6d64740f7b875d869d1f80f78ce8/.config 2024-10-20 06:02:46.008212911 +0800 @@ -1207,6 +1207,8 @@ CONFIG_IOMMU_MM_DATA=y CONFIG_EXECMEM=y CONFIG_NUMA_MEMBLKS=y CONFIG_NUMA_EMU=y +CONFIG_ARCH_SUPPORTS_PT_RECLAIM=y +CONFIG_PT_RECLAIM=y then we noticed various issues which we don't observe on parent. kernel test robot noticed "BUG:Bad_rss-counter_state_mm:#type:MM_FILEPAGES_val" on: commit: 2e22ca3c1f2a6d64740f7b875d869d1f80f78ce8 ("[PATCH v1 7/7] x86: select ARCH_SUPPORTS_PT_RECLAIM if X86_64") url: https://github.com/intel-lab-lkp/linux/commits/Qi-Zheng/mm-khugepaged-retract_page_tables-use-pte_offset_map_lock/20241017-174953 patch link: https://lore.kernel.org/all/0f6e7fb7fb21431710f28df60738f8be98fe9dd9.1729157502.git.zhengqi.arch@bytedance.com/ patch subject: [PATCH v1 7/7] x86: select ARCH_SUPPORTS_PT_RECLAIM if X86_64 in testcase: boot config: x86_64-rhel-8.3 compiler: gcc-12 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +-----------------------------------------------------------+------------+------------+ | | c9f9931196 | 2e22ca3c1f | +-----------------------------------------------------------+------------+------------+ | boot_failures | 0 | 6 | | BUG:Bad_rss-counter_state_mm:#type:MM_FILEPAGES_val | 0 | 5 | | BUG:Bad_rss-counter_state_mm:#type:MM_ANONPAGES_val | 0 | 6 | | BUG:Bad_page_cache_in_process | 0 | 3 | | segfault_at_ip_sp_error | 0 | 5 | | Kernel_panic-not_syncing:Attempted_to_kill_init!exitcode= | 0 | 4 | +-----------------------------------------------------------+------------+------------+ If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202410231429.b91daa36-oliver.sang@intel.com [ 9.153217][ T1] BUG: Bad rss-counter state mm:000000006dcf9cdd type:MM_FILEPAGES val:40 [ 9.153929][ T1] BUG: Bad rss-counter state mm:000000006dcf9cdd type:MM_ANONPAGES val:1 ... [ 9.444419][ T214] systemd[214]: segfault at 0 ip 0000000000000000 sp 00000000f6b1c2ec error 14 likely on CPU 1 (core 1, socket 0) [ 9.445388][ T214] Code: Unable to access opcode bytes at 0xffffffffffffffd6. Code starting with the faulting instruction =========================================== [ OK ] Started LKP bootstrap. [ 9.453331][ T1] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b [ 9.454023][ T1] CPU: 1 UID: 0 PID: 1 Comm: systemd Not tainted 6.12.0-rc3-next-20241016-00007-g2e22ca3c1f2a #1 [ 9.454818][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 9.455601][ T1] Call Trace: [ 9.455906][ T1] [ 9.456184][ T1] panic (kernel/panic.c:354) [ 9.456522][ T1] do_exit (include/linux/audit.h:327 kernel/exit.c:920) [ 9.456884][ T1] do_group_exit (kernel/exit.c:1069) [ 9.457252][ T1] get_signal (kernel/signal.c:2917) [ 9.457615][ T1] arch_do_signal_or_restart (arch/x86/kernel/signal.c:337) [ 9.458053][ T1] syscall_exit_to_user_mode (kernel/entry/common.c:113 include/linux/entry-common.h:328 kernel/entry/common.c:207 kernel/entry/common.c:218) [ 9.458495][ T1] __do_fast_syscall_32 (arch/x86/entry/common.c:391) [ 9.458904][ T1] do_fast_syscall_32 (arch/x86/entry/common.c:411) [ 9.459299][ T1] entry_SYSENTER_compat_after_hwframe (arch/x86/entry/entry_64_compat.S:127) [ 9.459788][ T1] RIP: 0023:0xf7fbf589 [ 9.460130][ T1] Code: 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 All code ======== 0: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi ... 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24:* 89 e5 mov %esp,%ebp <-- trapping instruction 26: 0f 34 sysenter 28: cd 80 int $0x80 2a: 5d pop %rbp 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 b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 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 b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi f: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi [ 9.461528][ T1] RSP: 002b:00000000ff837680 EFLAGS: 00200206 ORIG_RAX: 0000000000000006 [ 9.462212][ T1] RAX: 0000000000000000 RBX: 0000000000000038 RCX: 0000000000000002 [ 9.462834][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000f731e6cc [ 9.463462][ T1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 9.464083][ T1] R10: 0000000000000000 R11: 0000000000200206 R12: 0000000000000000 [ 9.464714][ T1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 9.465343][ T1] [ 9.465677][ T1] Kernel Offset: 0x4600000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20241023/202410231429.b91daa36-oliver.sang@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki