search for: sys_iopl

On Thu, Jul 14, 2011 at 5:48 PM, Mike Waychison <mikew at google.com> wrote: > On Thu, Jul 14, 2011 at 4:39 PM, Alan Cox <alan at lxorguk.ukuu.org.uk> wrote: >>> for stuff I probably should be disabling considering my goal of making >>> it difficult for root to compromise a system. ?And yes, modules are >>> disabled :) >> >> If you have

...18 7 -11 init_task 1296 1284 -12 exit_thread 179 91 -88 ioperm_get 103 10 -93 __switch_to_xtra 254 161 -93 sys_iopl 127 - -127 SyS_iopl 127 - -127 copy_thread 606 446 -160 vt_ioctl 4127 3919 -208 sys_ioperm 370...

...18 7 -11 init_task 1296 1284 -12 exit_thread 179 91 -88 ioperm_get 103 10 -93 __switch_to_xtra 254 161 -93 sys_iopl 127 - -127 SyS_iopl 127 - -127 copy_thread 606 446 -160 vt_ioctl 4127 3919 -208 sys_ioperm 370...

...18 7 -11 init_task 1296 1284 -12 exit_thread 179 91 -88 ioperm_get 103 10 -93 __switch_to_xtra 254 161 -93 sys_iopl 127 - -127 SyS_iopl 127 - -127 copy_thread 606 446 -160 vt_ioctl 4127 3919 -208 sys_ioperm 370...

With this patch, x86 and x86-64 share ioport.c, fixing LTP iopl and ioperm testcase failures (on both). We found an iopl testcase failing even on x86 xenlinux. Now x86-64 xenlinux should have the same results regarding the LTP testcases (as far as we tested). Signed-off-by: Li B Xin <li.b.xin@intel.com> Signed-off-by: Jun Nakajima <jun.nakajima@intel.com> Jun --- Intel Open Source

...888 876 -12 cpu_init 497 465 -32 exit_thread 147 75 -72 ioperm_get 100 6 -94 __switch_to_xtra 239 141 -98 sys_iopl 114 - -114 SyS_iopl 114 - -114 copy_thread 584 443 -141 sys_ioperm 343 - -343 init_tss 8576...

...7 -11 > init_task 1296 1284 -12 > exit_thread 179 91 -88 > ioperm_get 103 10 -93 > __switch_to_xtra 254 161 -93 > sys_iopl 127 - -127 > SyS_iopl 127 - -127 > copy_thread 606 446 -160 > vt_ioctl 4127 3919 -208 > sys_ioperm...

...7 -11 > init_task 1296 1284 -12 > exit_thread 179 91 -88 > ioperm_get 103 10 -93 > __switch_to_xtra 254 161 -93 > sys_iopl 127 - -127 > SyS_iopl 127 - -127 > copy_thread 606 446 -160 > vt_ioctl 4127 3919 -208 > sys_ioperm...

...7 -11 > init_task 1296 1284 -12 > exit_thread 179 91 -88 > ioperm_get 103 10 -93 > __switch_to_xtra 254 161 -93 > sys_iopl 127 - -127 > SyS_iopl 127 - -127 These are not really different ;) > copy_thread 606 446 -160 > vt_ioctl 4127 3919 -2...

...7 -11 > init_task 1296 1284 -12 > exit_thread 179 91 -88 > ioperm_get 103 10 -93 > __switch_to_xtra 254 161 -93 > sys_iopl 127 - -127 > SyS_iopl 127 - -127 These are not really different ;) > copy_thread 606 446 -160 > vt_ioctl 4127 3919 -2...

The 32-bit and 64-bit versions of copy_thread have functionally identical handling for copying the I/O bitmap, modulo differences in error handling. Clean up the error paths in both by moving the copy of the I/O bitmap to the end, to eliminate the need to free it if subsequent copy steps fail; move the resulting identical code to a static inline in a common header. Signed-off-by: Josh Triplett

The 32-bit and 64-bit versions of copy_thread have functionally identical handling for copying the I/O bitmap, modulo differences in error handling. Clean up the error paths in both by moving the copy of the I/O bitmap to the end, to eliminate the need to free it if subsequent copy steps fail; move the resulting identical code to a static inline in a common header. Signed-off-by: Josh Triplett

...168 149 -19 cpu_init 364 339 -25 __drop_fpu 60 - -60 ioperm_get 92 6 -86 exit_thread 105 10 -95 sys_iopl 106 - -106 copy_thread 364 257 -107 __switch_to_xtra 234 123 -111 sys_ioperm 240 - -240 init_tss 8576...

...168 149 -19 cpu_init 364 339 -25 __drop_fpu 60 - -60 ioperm_get 92 6 -86 exit_thread 105 10 -95 sys_iopl 106 - -106 copy_thread 364 257 -107 __switch_to_xtra 234 123 -111 sys_ioperm 240 - -240 init_tss 8576...

The 32-bit and 64-bit versions of copy_thread have functionally identical handling for copying the I/O bitmap, modulo differences in error handling. Clean up the error paths in both by moving the copy of the I/O bitmap to the end, to eliminate the need to free it if subsequent copy steps fail; move the resulting identical code to a static inline in a common header. Signed-off-by: Josh Triplett

The 32-bit and 64-bit versions of copy_thread have functionally identical handling for copying the I/O bitmap, modulo differences in error handling. Clean up the error paths in both by moving the copy of the I/O bitmap to the end, to eliminate the need to free it if subsequent copy steps fail; move the resulting identical code to a static inline in a common header. Signed-off-by: Josh Triplett

...149 -19 > cpu_init 364 339 -25 > __drop_fpu 60 - -60 > ioperm_get 92 6 -86 > exit_thread 105 10 -95 > sys_iopl 106 - -106 > copy_thread 364 257 -107 > __switch_to_xtra 234 123 -111 > sys_ioperm 240 - -240 > init_tss...

...168 149 -19 cpu_init 364 339 -25 __drop_fpu 60 - -60 ioperm_get 92 6 -86 exit_thread 105 10 -95 sys_iopl 106 - -106 copy_thread 364 257 -107 __switch_to_xtra 234 123 -111 sys_ioperm 240 - -240 init_tss 8576...

...168 149 -19 cpu_init 364 339 -25 __drop_fpu 60 - -60 ioperm_get 92 6 -86 exit_thread 105 10 -95 sys_iopl 106 - -106 copy_thread 364 257 -107 __switch_to_xtra 234 123 -111 sys_ioperm 240 - -240 init_tss 8576...

This patch series makes it possible to compile out the userspace IO system calls, iopl and ioperm. The first patch does some 32/64 unification in copy_thread to make subsequent changes easier. The second patch simplifies the complex calculation of the TSS segment limit, which also makes it easier to change in the last patch. Patches 3-9 introduce helpers to make it easier to compile out IO.