On 09/10/2014 03:09 PM, Hugh Dickins wrote: > Thanks for supplying, but the change in inlining means that > change_protection_range() and change_protection() are no longer > relevant for these traces, we now need to see change_pte_range() > instead, to confirm that what I expect are ptes are indeed ptes. > > If you can include line numbers (objdump -ld) in the disassembly, so > much the better, but should be decipherable without. (Or objdump -Sd > for source, but I often find that harder to unscramble, can't say why.) Here it is. Note that the source includes both of Mel's debug patches. For reference, here's one trace of the issue with those patches: [ 3114.540976] kernel BUG at include/asm-generic/pgtable.h:724! [ 3114.541857] invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC [ 3114.543112] Dumping ftrace buffer: [ 3114.544056] (ftrace buffer empty) [ 3114.545000] Modules linked in: [ 3114.545717] CPU: 18 PID: 30217 Comm: trinity-c617 Tainted: G W 3.17.0-rc4-next-20140910-sasha-00032-g6825fb5-dirty #1137 [ 3114.548058] task: ffff880415050000 ti: ffff88076f584000 task.ti: ffff88076f584000 [ 3114.549284] RIP: 0010:[<ffffffff952e527a>] [<ffffffff952e527a>] change_pte_range+0x4ea/0x4f0 [ 3114.550028] RSP: 0000:ffff88076f587d68 EFLAGS: 00010246 [ 3114.550028] RAX: 0000000314625900 RBX: 0000000041218000 RCX: 0000000000000100 [ 3114.550028] RDX: 0000000314625900 RSI: 0000000041218000 RDI: 0000000314625900 [ 3114.550028] RBP: ffff88076f587dc8 R08: ffff8802cf973600 R09: 0000000000b50000 [ 3114.550028] R10: 0000000000032c01 R11: 0000000000000008 R12: ffff8802a81070c0 [ 3114.550028] R13: 8000000000000025 R14: 0000000041343000 R15: ffffc00000000fff [ 3114.550028] FS: 00007fabb91c8700(0000) GS:ffff88025ec00000(0000) knlGS:0000000000000000 [ 3114.550028] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 3114.550028] CR2: 00007fffdb7678e8 CR3: 0000000713935000 CR4: 00000000000006a0 [ 3114.550028] DR0: 00000000006f0000 DR1: 0000000000000000 DR2: 0000000000000000 [ 3114.550028] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000050602 [ 3114.550028] Stack: [ 3114.550028] 0000000000000001 0000000314625900 0000000000000018 ffff8802685f2260 [ 3114.550028] 0000000016840000 ffff8802cf973600 ffff880616840000 0000000041343000 [ 3114.550028] ffff880108805048 0000000041005000 0000000041200000 0000000041343000 [ 3114.550028] Call Trace: [ 3114.550028] [<ffffffff952e5534>] change_protection+0x2b4/0x4e0 [ 3114.550028] [<ffffffff952ff24b>] change_prot_numa+0x1b/0x40 [ 3114.550028] [<ffffffff951adf16>] task_numa_work+0x1f6/0x330 [ 3114.550028] [<ffffffff95193de4>] task_work_run+0xc4/0xf0 [ 3114.550028] [<ffffffff95071477>] do_notify_resume+0x97/0xb0 [ 3114.550028] [<ffffffff9850f06a>] int_signal+0x12/0x17 [ 3114.550028] Code: 66 90 48 8b 7d b8 e8 e6 88 22 03 48 8b 45 b0 e9 6f ff ff ff 0f 1f 44 00 00 0f 0b 66 0f 1f 44 00 00 0f 0b 66 0f 1f 44 00 00 0f 0b <0f> 0b 0f 0b 0f 0b 66 66 66 66 90 55 48 89 e5 41 57 49 89 d7 41 [ 3114.550028] RIP [<ffffffff952e527a>] change_pte_range+0x4ea/0x4f0 [ 3114.550028] RSP <ffff88076f587d68> And the disassembly: 0000000000000000 <change_pte_range>: change_pte_range(): /home/sasha/linux-next/mm/mprotect.c:70 0: e8 00 00 00 00 callq 5 <change_pte_range+0x5> 1: R_X86_64_PC32 __fentry__-0x4 5: 55 push %rbp 6: 48 89 e5 mov %rsp,%rbp 9: 41 57 push %r15 b: 41 56 push %r14 d: 49 89 ce mov %rcx,%r14 10: 41 55 push %r13 12: 4d 89 c5 mov %r8,%r13 15: 41 54 push %r12 17: 49 89 f4 mov %rsi,%r12 1a: 53 push %rbx 1b: 48 89 d3 mov %rdx,%rbx 1e: 48 83 ec 38 sub $0x38,%rsp /home/sasha/linux-next/mm/mprotect.c:71 22: 48 8b 47 40 mov 0x40(%rdi),%rax /home/sasha/linux-next/mm/mprotect.c:70 26: 48 89 7d c8 mov %rdi,-0x38(%rbp) lock_pte_protection(): /home/sasha/linux-next/mm/mprotect.c:53 2a: 8b 4d 10 mov 0x10(%rbp),%ecx change_pte_range(): /home/sasha/linux-next/mm/mprotect.c:70 2d: 44 89 4d c4 mov %r9d,-0x3c(%rbp) /home/sasha/linux-next/mm/mprotect.c:71 31: 48 89 45 d0 mov %rax,-0x30(%rbp) lock_pte_protection(): /home/sasha/linux-next/mm/mprotect.c:53 35: 85 c9 test %ecx,%ecx 37: 0f 84 6b 03 00 00 je 3a8 <change_pte_range+0x3a8> pmd_to_page(): /home/sasha/linux-next/include/linux/mm.h:1538 3d: 48 89 f7 mov %rsi,%rdi 40: 48 81 e7 00 f0 ff ff and $0xfffffffffffff000,%rdi 47: e8 00 00 00 00 callq 4c <change_pte_range+0x4c> 48: R_X86_64_PC32 __phys_addr-0x4 4c: 48 ba 00 00 00 00 00 movabs $0xffffea0000000000,%rdx 53: ea ff ff 56: 48 c1 e8 0c shr $0xc,%rax spin_lock(): /home/sasha/linux-next/include/linux/spinlock.h:309 5a: 48 89 55 b8 mov %rdx,-0x48(%rbp) 5e: 48 c1 e0 06 shl $0x6,%rax 62: 4c 8b 7c 10 30 mov 0x30(%rax,%rdx,1),%r15 67: 4c 89 ff mov %r15,%rdi 6a: e8 00 00 00 00 callq 6f <change_pte_range+0x6f> 6b: R_X86_64_PC32 _raw_spin_lock-0x4 6f: 49 8b 3c 24 mov (%r12),%rdi pmd_val(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571 73: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 7b <change_pte_range+0x7b> 7a: 00 76: R_X86_64_PC32 pv_mmu_ops+0x10b 7b: 48 8b 55 b8 mov -0x48(%rbp),%rdx 7f: 0f 84 ab 03 00 00 je 430 <change_pte_range+0x430> 85: ff 14 25 00 00 00 00 callq *0x0 88: R_X86_64_32S pv_mmu_ops+0x110 lock_pte_protection(): /home/sasha/linux-next/mm/mprotect.c:57 8c: a8 80 test $0x80,%al 8e: 0f 85 a4 03 00 00 jne 438 <change_pte_range+0x438> 94: 49 8b 3c 24 mov (%r12),%rdi 98: 48 85 ff test %rdi,%rdi 9b: 0f 84 97 03 00 00 je 438 <change_pte_range+0x438> pmd_val(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571 a1: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # a9 <change_pte_range+0xa9> a8: 00 a4: R_X86_64_PC32 pv_mmu_ops+0x10b a9: 0f 84 81 03 00 00 je 430 <change_pte_range+0x430> af: ff 14 25 00 00 00 00 callq *0x0 b2: R_X86_64_32S pv_mmu_ops+0x110 b6: 48 b9 00 f0 ff ff ff movabs $0x3ffffffff000,%rcx bd: 3f 00 00 c0: 48 21 c8 and %rcx,%rax c3: 48 89 c7 mov %rax,%rdi c6: 48 c1 ef 06 shr $0x6,%rdi ca: 48 8b 44 3a 30 mov 0x30(%rdx,%rdi,1),%rax cf: 49 8b 3c 24 mov (%r12),%rdi d3: 48 89 45 b8 mov %rax,-0x48(%rbp) pte_offset_kernel(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:551 d7: 48 89 d8 mov %rbx,%rax da: 48 c1 e8 09 shr $0x9,%rax de: 25 f8 0f 00 00 and $0xff8,%eax pmd_val(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571 e3: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # eb <change_pte_range+0xeb> ea: 00 e6: R_X86_64_PC32 pv_mmu_ops+0x10b pte_offset_kernel(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:551 eb: 48 89 c2 mov %rax,%rdx pmd_val(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571 ee: 0f 84 3c 03 00 00 je 430 <change_pte_range+0x430> f4: ff 14 25 00 00 00 00 callq *0x0 f7: R_X86_64_32S pv_mmu_ops+0x110 spin_lock(): /home/sasha/linux-next/include/linux/spinlock.h:309 fb: 48 8b 7d b8 mov -0x48(%rbp),%rdi pmd_page_vaddr(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571 ff: 49 89 c4 mov %rax,%r12 pte_offset_kernel(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:551 102: 48 b8 00 00 00 00 00 movabs $0xffff880000000000,%rax 109: 88 ff ff 10c: 48 01 d0 add %rdx,%rax 10f: 4c 21 e1 and %r12,%rcx 112: 4c 8d 24 08 lea (%rax,%rcx,1),%r12 spin_lock(): /home/sasha/linux-next/include/linux/spinlock.h:309 116: e8 00 00 00 00 callq 11b <change_pte_range+0x11b> 117: R_X86_64_PC32 _raw_spin_lock-0x4 spin_unlock(): /home/sasha/linux-next/include/linux/spinlock.h:349 11b: 4c 89 ff mov %r15,%rdi 11e: e8 00 00 00 00 callq 123 <change_pte_range+0x123> 11f: R_X86_64_PC32 _raw_spin_unlock-0x4 arch_enter_lazy_mmu_mode(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:694 123: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 12b <change_pte_range+0x12b> 12a: 00 126: R_X86_64_PC32 pv_mmu_ops+0x133 12b: 0f 84 a7 03 00 00 je 4d8 <change_pte_range+0x4d8> 131: ff 14 25 00 00 00 00 callq *0x0 134: R_X86_64_32S pv_mmu_ops+0x138 massage_pgprot(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:351 138: 4c 89 e8 mov %r13,%rax change_pte_range(): /home/sasha/linux-next/mm/mprotect.c:74 13b: 48 c7 45 b0 00 00 00 movq $0x0,-0x50(%rbp) 142: 00 pte_present(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:460 143: 49 bf ff 0f 00 00 00 movabs $0xffffc00000000fff,%r15 14a: c0 ff ff massage_pgprot(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:351 14d: 83 e0 01 and $0x1,%eax 150: 48 89 45 a0 mov %rax,-0x60(%rbp) 154: e9 fa 00 00 00 jmpq 253 <change_pte_range+0x253> 159: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) change_pte_range(): /home/sasha/linux-next/mm/mprotect.c:87 160: 8b 55 10 mov 0x10(%rbp),%edx 163: 85 d2 test %edx,%edx 165: 0f 85 85 01 00 00 jne 2f0 <change_pte_range+0x2f0> ptep_modify_prot_start(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:490 16b: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 173 <change_pte_range+0x173> 172: 00 16e: R_X86_64_PC32 pv_mmu_ops+0xd3 173: 0f 84 2f 03 00 00 je 4a8 <change_pte_range+0x4a8> 179: 48 8b 7d d0 mov -0x30(%rbp),%rdi 17d: 48 89 de mov %rbx,%rsi 180: 4c 89 e2 mov %r12,%rdx 183: ff 14 25 00 00 00 00 callq *0x0 186: R_X86_64_32S pv_mmu_ops+0xd8 change_pte_range(): /home/sasha/linux-next/mm/mprotect.c:89 18a: 48 89 c2 mov %rax,%rdx ptep_modify_prot_start(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:490 18d: 48 89 c7 mov %rax,%rdi change_pte_range(): /home/sasha/linux-next/mm/mprotect.c:89 190: 81 e2 01 03 00 00 and $0x301,%edx 196: 48 81 fa 00 02 00 00 cmp $0x200,%rdx 19d: 0f 84 bd 02 00 00 je 460 <change_pte_range+0x460> pte_val(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:450 1a3: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 1ab <change_pte_range+0x1ab> 1aa: 00 1a6: R_X86_64_PC32 pv_mmu_ops+0xe3 1ab: 0f 84 a7 02 00 00 je 458 <change_pte_range+0x458> 1b1: ff 14 25 00 00 00 00 callq *0x0 1b4: R_X86_64_32S pv_mmu_ops+0xe8 pte_modify(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:377 1b8: 48 be 78 fa ff ff ff movabs $0x3ffffffffa78,%rsi 1bf: 3f 00 00 massage_pgprot(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:352 1c2: 4c 89 ef mov %r13,%rdi 1c5: 48 23 3d 00 00 00 00 and 0x0(%rip),%rdi # 1cc <change_pte_range+0x1cc> 1c8: R_X86_64_PC32 __supported_pte_mask-0x4 pte_modify(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:378 1cc: 48 ba 87 05 00 00 00 movabs $0xffffc00000000587,%rdx 1d3: c0 ff ff /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:377 1d6: 48 21 f0 and %rsi,%rax massage_pgprot(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:352 1d9: 48 83 7d a0 00 cmpq $0x0,-0x60(%rbp) 1de: 49 0f 44 fd cmove %r13,%rdi pte_modify(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:378 1e2: 48 89 f9 mov %rdi,%rcx 1e5: 48 21 d1 and %rdx,%rcx 1e8: 48 09 c1 or %rax,%rcx __pte(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:435 1eb: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 1f3 <change_pte_range+0x1f3> 1f2: 00 1ee: R_X86_64_PC32 pv_mmu_ops+0xeb pte_modify(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:378 1f3: 48 89 cf mov %rcx,%rdi __pte(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:435 1f6: 0f 84 a4 02 00 00 je 4a0 <change_pte_range+0x4a0> 1fc: ff 14 25 00 00 00 00 callq *0x0 1ff: R_X86_64_32S pv_mmu_ops+0xf0 203: 48 89 c1 mov %rax,%rcx change_pte_range(): /home/sasha/linux-next/mm/mprotect.c:96 206: 8b 45 c4 mov -0x3c(%rbp),%eax 209: 85 c0 test %eax,%eax 20b: 74 0e je 21b <change_pte_range+0x21b> pte_set_flags(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:186 (discriminator 1) 20d: 48 89 c8 mov %rcx,%rax 210: 48 83 c8 02 or $0x2,%rax 214: f6 c1 40 test $0x40,%cl 217: 48 0f 45 c8 cmovne %rax,%rcx ptep_modify_prot_commit(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:503 21b: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 223 <change_pte_range+0x223> 222: 00 21e: R_X86_64_PC32 pv_mmu_ops+0xdb 223: 0f 84 b7 02 00 00 je 4e0 <change_pte_range+0x4e0> 229: 48 8b 7d d0 mov -0x30(%rbp),%rdi 22d: 48 89 de mov %rbx,%rsi 230: 4c 89 e2 mov %r12,%rdx 233: ff 14 25 00 00 00 00 callq *0x0 236: R_X86_64_32S pv_mmu_ops+0xe0 change_pte_range(): /home/sasha/linux-next/mm/mprotect.c:128 23a: 48 83 45 b0 01 addq $0x1,-0x50(%rbp) /home/sasha/linux-next/mm/mprotect.c:131 23f: 48 81 c3 00 10 00 00 add $0x1000,%rbx 246: 49 83 c4 08 add $0x8,%r12 24a: 4c 39 f3 cmp %r14,%rbx 24d: 0f 84 5d 02 00 00 je 4b0 <change_pte_range+0x4b0> /home/sasha/linux-next/mm/mprotect.c:82 253: 49 8b 0c 24 mov (%r12),%rcx pte_present(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:460 257: 48 89 c8 mov %rcx,%rax 25a: 4c 21 f8 and %r15,%rax change_pte_range(): /home/sasha/linux-next/mm/mprotect.c:83 25d: a9 01 03 00 00 test $0x301,%eax 262: 0f 85 f8 fe ff ff jne 160 <change_pte_range+0x160> /home/sasha/linux-next/mm/mprotect.c:113 268: a8 40 test $0x40,%al 26a: 75 d3 jne 23f <change_pte_range+0x23f> pte_swp_soft_dirty(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:885 26c: a9 01 01 00 00 test $0x101,%eax 271: 0f 85 71 02 00 00 jne 4e8 <change_pte_range+0x4e8> pte_clear_flags(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:193 277: 48 89 ca mov %rcx,%rdx 27a: 41 89 c0 mov %eax,%r8d 27d: 80 e2 7f and $0x7f,%dl 280: 41 81 e0 80 00 00 00 and $0x80,%r8d 287: 48 0f 45 ca cmovne %rdx,%rcx pte_val(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:450 28b: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 293 <change_pte_range+0x293> 292: 00 28e: R_X86_64_PC32 pv_mmu_ops+0xe3 293: 0f 84 bf 01 00 00 je 458 <change_pte_range+0x458> 299: 48 89 cf mov %rcx,%rdi 29c: ff 14 25 00 00 00 00 callq *0x0 29f: R_X86_64_32S pv_mmu_ops+0xe8 swp_entry(): /home/sasha/linux-next/include/linux/swapops.h:30 2a3: 48 89 c1 mov %rax,%rcx 2a6: 48 c1 e8 0a shr $0xa,%rax 2aa: 48 d1 e9 shr %rcx 2ad: 83 e1 1f and $0x1f,%ecx 2b0: 48 c1 e1 39 shl $0x39,%rcx 2b4: 48 09 c8 or %rcx,%rax change_pte_range(): /home/sasha/linux-next/mm/mprotect.c:116 2b7: 48 89 c2 mov %rax,%rdx 2ba: 48 c1 ea 39 shr $0x39,%rdx 2be: 48 83 fa 1f cmp $0x1f,%rdx 2c2: 0f 85 77 ff ff ff jne 23f <change_pte_range+0x23f> swp_entry_to_pte(): /home/sasha/linux-next/include/linux/swapops.h:84 2c8: 48 c1 e0 0a shl $0xa,%rax 2cc: 48 89 c1 mov %rax,%rcx 2cf: 0c bc or $0xbc,%al 2d1: 48 83 c9 3c or $0x3c,%rcx 2d5: 45 85 c0 test %r8d,%r8d 2d8: 48 0f 45 c8 cmovne %rax,%rcx set_pte_at(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:524 2dc: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 2e4 <change_pte_range+0x2e4> 2e3: 00 2df: R_X86_64_PC32 pv_mmu_ops+0x9b 2e4: 0f 85 a4 00 00 00 jne 38e <change_pte_range+0x38e> 2ea: 0f 0b ud2 2ec: 0f 1f 40 00 nopl 0x0(%rax) change_pte_range(): /home/sasha/linux-next/mm/mprotect.c:103 2f0: 48 8b 7d c8 mov -0x38(%rbp),%rdi 2f4: 48 89 ca mov %rcx,%rdx 2f7: 48 89 de mov %rbx,%rsi 2fa: 48 89 4d a8 mov %rcx,-0x58(%rbp) 2fe: e8 00 00 00 00 callq 303 <change_pte_range+0x303> 2ff: R_X86_64_PC32 vm_normal_page-0x4 /home/sasha/linux-next/mm/mprotect.c:104 303: 48 85 c0 test %rax,%rax 306: 0f 84 33 ff ff ff je 23f <change_pte_range+0x23f> /home/sasha/linux-next/mm/mprotect.c:104 (discriminator 1) 30c: 48 8b 40 08 mov 0x8(%rax),%rax 310: 83 e0 03 and $0x3,%eax 313: 48 83 f8 03 cmp $0x3,%rax 317: 0f 84 22 ff ff ff je 23f <change_pte_range+0x23f> /home/sasha/linux-next/mm/mprotect.c:105 31d: 48 8b 4d a8 mov -0x58(%rbp),%rcx 321: 81 e1 01 03 00 00 and $0x301,%ecx 327: 48 81 f9 00 02 00 00 cmp $0x200,%rcx 32e: 0f 84 0b ff ff ff je 23f <change_pte_range+0x23f> pte_val(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:450 334: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 33c <change_pte_range+0x33c> 33b: 00 337: R_X86_64_PC32 pv_mmu_ops+0xe3 ptep_set_numa(): /home/sasha/linux-next/include/asm-generic/pgtable.h:740 33c: 49 8b 3c 24 mov (%r12),%rdi pte_val(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:450 340: 0f 84 12 01 00 00 je 458 <change_pte_range+0x458> 346: ff 14 25 00 00 00 00 callq *0x0 349: R_X86_64_32S pv_mmu_ops+0xe8 pte_mknuma(): /home/sasha/linux-next/include/asm-generic/pgtable.h:724 34d: a8 01 test $0x1,%al 34f: 0f 84 95 01 00 00 je 4ea <change_pte_range+0x4ea> /home/sasha/linux-next/include/asm-generic/pgtable.h:727 355: f6 c4 01 test $0x1,%ah 358: 0f 85 8e 01 00 00 jne 4ec <change_pte_range+0x4ec> /home/sasha/linux-next/include/asm-generic/pgtable.h:729 35e: 48 83 e0 fe and $0xfffffffffffffffe,%rax /home/sasha/linux-next/include/asm-generic/pgtable.h:730 362: 80 cc 02 or $0x2,%ah __pte(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:435 365: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 36d <change_pte_range+0x36d> 36c: 00 368: R_X86_64_PC32 pv_mmu_ops+0xeb pte_mknuma(): /home/sasha/linux-next/include/asm-generic/pgtable.h:730 36d: 48 89 c7 mov %rax,%rdi __pte(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:435 370: 0f 84 2a 01 00 00 je 4a0 <change_pte_range+0x4a0> 376: ff 14 25 00 00 00 00 callq *0x0 379: R_X86_64_32S pv_mmu_ops+0xf0 set_pte_at(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:524 37d: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 385 <change_pte_range+0x385> 384: 00 380: R_X86_64_PC32 pv_mmu_ops+0x9b pte_mknuma(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:435 385: 48 89 c1 mov %rax,%rcx set_pte_at(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:524 388: 0f 84 5c ff ff ff je 2ea <change_pte_range+0x2ea> 38e: 48 8b 7d d0 mov -0x30(%rbp),%rdi 392: 48 89 de mov %rbx,%rsi 395: 4c 89 e2 mov %r12,%rdx 398: ff 14 25 00 00 00 00 callq *0x0 39b: R_X86_64_32S pv_mmu_ops+0xa0 39f: e9 96 fe ff ff jmpq 23a <change_pte_range+0x23a> 3a4: 0f 1f 40 00 nopl 0x0(%rax) pmd_val(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571 3a8: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 3b0 <change_pte_range+0x3b0> 3af: 00 3ab: R_X86_64_PC32 pv_mmu_ops+0x10b 3b0: 48 8b 3e mov (%rsi),%rdi 3b3: 74 7b je 430 <change_pte_range+0x430> 3b5: ff 14 25 00 00 00 00 callq *0x0 3b8: R_X86_64_32S pv_mmu_ops+0x110 3bc: 48 ba 00 f0 ff ff ff movabs $0x3ffffffff000,%rdx 3c3: 3f 00 00 3c6: 48 21 d0 and %rdx,%rax 3c9: 48 89 c7 mov %rax,%rdi 3cc: 48 b8 00 00 00 00 00 movabs $0xffffea0000000000,%rax 3d3: ea ff ff 3d6: 48 c1 ef 06 shr $0x6,%rdi 3da: 48 8b 44 07 30 mov 0x30(%rdi,%rax,1),%rax 3df: 48 8b 3e mov (%rsi),%rdi 3e2: 48 89 45 b8 mov %rax,-0x48(%rbp) pte_offset_kernel(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:551 3e6: 48 89 d8 mov %rbx,%rax 3e9: 48 c1 e8 09 shr $0x9,%rax 3ed: 25 f8 0f 00 00 and $0xff8,%eax pmd_val(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571 3f2: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 3fa <change_pte_range+0x3fa> 3f9: 00 3f5: R_X86_64_PC32 pv_mmu_ops+0x10b pte_offset_kernel(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:551 3fa: 48 89 c1 mov %rax,%rcx pmd_val(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571 3fd: 74 31 je 430 <change_pte_range+0x430> 3ff: ff 14 25 00 00 00 00 callq *0x0 402: R_X86_64_32S pv_mmu_ops+0x110 spin_lock(): /home/sasha/linux-next/include/linux/spinlock.h:309 406: 48 8b 7d b8 mov -0x48(%rbp),%rdi pmd_page_vaddr(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571 40a: 49 89 c4 mov %rax,%r12 pte_offset_kernel(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:551 40d: 48 b8 00 00 00 00 00 movabs $0xffff880000000000,%rax 414: 88 ff ff 417: 48 01 c8 add %rcx,%rax 41a: 4c 21 e2 and %r12,%rdx 41d: 4c 8d 24 10 lea (%rax,%rdx,1),%r12 spin_lock(): /home/sasha/linux-next/include/linux/spinlock.h:309 421: e8 00 00 00 00 callq 426 <change_pte_range+0x426> 422: R_X86_64_PC32 _raw_spin_lock-0x4 426: e9 f8 fc ff ff jmpq 123 <change_pte_range+0x123> 42b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) pmd_val(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:571 430: 0f 0b ud2 432: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) spin_unlock(): /home/sasha/linux-next/include/linux/spinlock.h:349 438: 4c 89 ff mov %r15,%rdi 43b: e8 00 00 00 00 callq 440 <change_pte_range+0x440> 43c: R_X86_64_PC32 _raw_spin_unlock-0x4 change_pte_range(): /home/sasha/linux-next/mm/mprotect.c:78 440: 31 c0 xor %eax,%eax /home/sasha/linux-next/mm/mprotect.c:136 442: 48 83 c4 38 add $0x38,%rsp 446: 5b pop %rbx 447: 41 5c pop %r12 449: 41 5d pop %r13 44b: 41 5e pop %r14 44d: 41 5f pop %r15 44f: 5d pop %rbp 450: c3 retq 451: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) pte_to_swp_entry(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:450 458: 0f 0b ud2 45a: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) pte_val(): 460: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 468 <change_pte_range+0x468> 467: 00 463: R_X86_64_PC32 pv_mmu_ops+0xe3 468: 74 ee je 458 <change_pte_range+0x458> 46a: 48 89 c7 mov %rax,%rdi 46d: ff 14 25 00 00 00 00 callq *0x0 470: R_X86_64_32S pv_mmu_ops+0xe8 pte_mknonnuma(): /home/sasha/linux-next/include/asm-generic/pgtable.h:701 474: 80 e4 fd and $0xfd,%ah /home/sasha/linux-next/include/asm-generic/pgtable.h:702 477: 48 83 c8 21 or $0x21,%rax __pte(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:435 47b: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 483 <change_pte_range+0x483> 482: 00 47e: R_X86_64_PC32 pv_mmu_ops+0xeb pte_mknonnuma(): /home/sasha/linux-next/include/asm-generic/pgtable.h:702 483: 48 89 c7 mov %rax,%rdi __pte(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:435 486: 74 18 je 4a0 <change_pte_range+0x4a0> 488: ff 14 25 00 00 00 00 callq *0x0 48b: R_X86_64_32S pv_mmu_ops+0xf0 48f: 48 89 c7 mov %rax,%rdi 492: e9 0c fd ff ff jmpq 1a3 <change_pte_range+0x1a3> 497: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 49e: 00 00 4a0: 0f 0b ud2 4a2: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) ptep_modify_prot_start(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:490 4a8: 0f 0b ud2 4aa: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) arch_leave_lazy_mmu_mode(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:699 4b0: 48 83 3d 00 00 00 00 cmpq $0x0,0x0(%rip) # 4b8 <change_pte_range+0x4b8> 4b7: 00 4b3: R_X86_64_PC32 pv_mmu_ops+0x13b 4b8: 74 34 je 4ee <change_pte_range+0x4ee> 4ba: ff 14 25 00 00 00 00 callq *0x0 4bd: R_X86_64_32S pv_mmu_ops+0x140 spin_unlock(): /home/sasha/linux-next/include/linux/spinlock.h:349 4c1: 48 8b 7d b8 mov -0x48(%rbp),%rdi 4c5: e8 00 00 00 00 callq 4ca <change_pte_range+0x4ca> 4c6: R_X86_64_PC32 _raw_spin_unlock-0x4 change_pte_range(): /home/sasha/linux-next/mm/mprotect.c:135 4ca: 48 8b 45 b0 mov -0x50(%rbp),%rax 4ce: e9 6f ff ff ff jmpq 442 <change_pte_range+0x442> 4d3: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) arch_enter_lazy_mmu_mode(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:694 4d8: 0f 0b ud2 4da: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) ptep_modify_prot_commit(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:503 4e0: 0f 0b ud2 4e2: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) pte_to_swp_entry(): /home/sasha/linux-next/./arch/x86/include/asm/pgtable.h:885 4e8: 0f 0b ud2 ptep_set_numa(): /home/sasha/linux-next/include/asm-generic/pgtable.h:724 4ea: 0f 0b ud2 /home/sasha/linux-next/include/asm-generic/pgtable.h:727 4ec: 0f 0b ud2 arch_leave_lazy_mmu_mode(): /home/sasha/linux-next/./arch/x86/include/asm/paravirt.h:699 4ee: 0f 0b ud2 Thanks, Sasha -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. 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