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X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1PR11MB5042 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "WARNING:at_arch/x86/mm/pti.c:#pti_clone_pgtable" on: commit: 3db03fb4995ef85fc41e86262ead7b4852f4bcf0 ("x86/mm: Fix pti_clone_entry_text() for i386") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master [test failed on linus/master b446a2dae984fa5bd56dd7c3a02a426f87e05813] [test failed on linux-next/master 1e391b34f6aa043c7afa40a2103163a0ef06d179] in testcase: boot compiler: gcc-12 test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G (please refer to attached dmesg/kmsg for entire log/backtrace) +-------------------------------------------------+------------+------------+ | | 41e71dbb0e | 3db03fb499 | +-------------------------------------------------+------------+------------+ | WARNING:at_arch/x86/mm/pti.c:#pti_clone_pgtable | 0 | 12 | | EIP:pti_clone_pgtable | 0 | 12 | +-------------------------------------------------+------------+------------+ 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/202408121253.8a1d34f7-lkp@intel.com [ 11.814894][ T1] ------------[ cut here ]------------ [ 11.815370][ T1] WARNING: CPU: 1 PID: 1 at arch/x86/mm/pti.c:256 pti_clone_pgtable (arch/x86/mm/pti.c:256 arch/x86/mm/pti.c:393) [ 11.816203][ T1] Modules linked in: [ 11.816557][ T1] CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.11.0-rc1-00006-g3db03fb4995e #1 77da0921d99dee185d449e76648f3c514bb36724 [ 11.817684][ T1] EIP: pti_clone_pgtable (arch/x86/mm/pti.c:256 arch/x86/mm/pti.c:393) [ 11.818151][ T1] Code: 00 00 00 8b 10 b8 00 00 e0 ff 89 d1 81 e1 80 00 00 00 83 c9 00 75 05 b8 00 f0 ff ff f7 d0 21 d0 25 80 00 00 00 83 c8 00 74 04 <0f> 0b eb 71 83 e2 9f 83 ca 00 75 30 31 d2 b8 c0 0d 00 00 e8 3d b5 All code ======== 0: 00 00 add %al,(%rax) 2: 00 8b 10 b8 00 00 add %cl,0xb810(%rbx) 8: e0 ff loopne 0x9 a: 89 d1 mov %edx,%ecx c: 81 e1 80 00 00 00 and $0x80,%ecx 12: 83 c9 00 or $0x0,%ecx 15: 75 05 jne 0x1c 17: b8 00 f0 ff ff mov $0xfffff000,%eax 1c: f7 d0 not %eax 1e: 21 d0 and %edx,%eax 20: 25 80 00 00 00 and $0x80,%eax 25: 83 c8 00 or $0x0,%eax 28: 74 04 je 0x2e 2a:* 0f 0b ud2 <-- trapping instruction 2c: eb 71 jmp 0x9f 2e: 83 e2 9f and $0xffffff9f,%edx 31: 83 ca 00 or $0x0,%edx 34: 75 30 jne 0x66 36: 31 d2 xor %edx,%edx 38: b8 c0 0d 00 00 mov $0xdc0,%eax 3d: e8 .byte 0xe8 3e: 3d .byte 0x3d 3f: b5 .byte 0xb5 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: eb 71 jmp 0x75 4: 83 e2 9f and $0xffffff9f,%edx 7: 83 ca 00 or $0x0,%edx a: 75 30 jne 0x3c c: 31 d2 xor %edx,%edx e: b8 c0 0d 00 00 mov $0xdc0,%eax 13: e8 .byte 0xe8 14: 3d .byte 0x3d 15: b5 .byte 0xb5 [ 11.819851][ T1] EAX: 00000080 EBX: d9e26618 ECX: 00000080 EDX: 186001e3 [ 11.820470][ T1] ESI: c1014618 EDI: ed116398 EBP: c110df74 ESP: c110df48 [ 11.821083][ T1] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00010202 [ 11.821767][ T1] CR0: 80050033 CR2: 00000000 CR3: 19e2a000 CR4: 000406f0 [ 11.822373][ T1] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 11.823030][ T1] DR6: fffe0ff0 DR7: 00000400 [ 11.823441][ T1] Call Trace: [ 11.823770][ T1] ? show_regs (arch/x86/kernel/dumpstack.c:479 arch/x86/kernel/dumpstack.c:465) [ 11.824143][ T1] ? pti_clone_pgtable (arch/x86/mm/pti.c:256 arch/x86/mm/pti.c:393) [ 11.824588][ T1] ? __warn (kernel/panic.c:735) [ 11.824933][ T1] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 11.825321][ T1] ? pti_clone_pgtable (arch/x86/mm/pti.c:256 arch/x86/mm/pti.c:393) [ 11.825759][ T1] ? exc_overflow (arch/x86/kernel/traps.c:252) [ 11.826183][ T1] ? handle_bug (arch/x86/kernel/traps.c:239) [ 11.826563][ T1] ? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminator 1)) [ 11.826970][ T1] ? handle_exception (arch/x86/entry/entry_32.S:1047) [ 11.827415][ T1] ? _raw_write_trylock (include/linux/rwlock_api_smp.h:136 kernel/locking/spinlock.c:292) [ 11.827844][ T1] ? exc_overflow (arch/x86/kernel/traps.c:252) [ 11.828123][ T1] ? pti_clone_pgtable (arch/x86/mm/pti.c:256 arch/x86/mm/pti.c:393) [ 11.828434][ T1] ? _raw_write_trylock (include/linux/rwlock_api_smp.h:136 kernel/locking/spinlock.c:292) [ 11.828723][ T1] ? exc_overflow (arch/x86/kernel/traps.c:252) [ 11.828984][ T1] ? pti_clone_pgtable (arch/x86/mm/pti.c:256 arch/x86/mm/pti.c:393) [ 11.829283][ T1] ? __SCT__tp_func_ma_write (??:?) [ 11.829613][ T1] ? __SCT__tp_func_ma_write (??:?) [ 11.829916][ T1] ? rest_init (init/main.c:1459) [ 11.830179][ T1] pti_finalize (arch/x86/mm/pti.c:524 arch/x86/mm/pti.c:564 arch/x86/mm/pti.c:663) [ 11.830418][ T1] kernel_init (init/main.c:1485) [ 11.830653][ T1] ret_from_fork (arch/x86/kernel/process.c:153) [ 11.830899][ T1] ? rest_init (init/main.c:1459) [ 11.831144][ T1] ret_from_fork_asm (arch/x86/entry/entry_32.S:737) [ 11.831408][ T1] entry_INT80_32 (arch/x86/entry/entry_32.S:944) [ 11.832355][ T1] irq event stamp: 830689 [ 11.832597][ T1] hardirqs last enabled at (830697): console_unlock (arch/x86/include/asm/irqflags.h:26 arch/x86/include/asm/irqflags.h:87 arch/x86/include/asm/irqflags.h:147 kernel/printk/printk.c:341 kernel/printk/printk.c:2801 kernel/printk/printk.c:3120) [ 11.833089][ T1] hardirqs last disabled at (830706): console_unlock (kernel/printk/printk.c:339 kernel/printk/printk.c:2801 kernel/printk/printk.c:3120) [ 11.833556][ T1] softirqs last enabled at (830318): handle_softirqs (kernel/softirq.c:401 kernel/softirq.c:582) [ 11.834022][ T1] softirqs last disabled at (830303): __do_softirq (kernel/softirq.c:589) [ 11.834455][ T1] ---[ end trace 0000000000000000 ]--- The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240812/202408121253.8a1d34f7-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki