ff388fe5c4
Patch series "Introduce mseal", v10.
This patchset proposes a new mseal() syscall for the Linux kernel.
In a nutshell, mseal() protects the VMAs of a given virtual memory range
against modifications, such as changes to their permission bits.
Modern CPUs support memory permissions, such as the read/write (RW) and
no-execute (NX) bits. Linux has supported NX since the release of kernel
version 2.6.8 in August 2004 [1]. The memory permission feature improves
the security stance on memory corruption bugs, as an attacker cannot
simply write to arbitrary memory and point the code to it. The memory
must be marked with the X bit, or else an exception will occur.
Internally, the kernel maintains the memory permissions in a data
structure called VMA (vm_area_struct). mseal() additionally protects the
VMA itself against modifications of the selected seal type.
Memory sealing is useful to mitigate memory corruption issues where a
corrupted pointer is passed to a memory management system. For example,
such an attacker primitive can break control-flow integrity guarantees
since read-only memory that is supposed to be trusted can become writable
or .text pages can get remapped. Memory sealing can automatically be
applied by the runtime loader to seal .text and .rodata pages and
applications can additionally seal security critical data at runtime. A
similar feature already exists in the XNU kernel with the
VM_FLAGS_PERMANENT [3] flag and on OpenBSD with the mimmutable syscall
[4]. Also, Chrome wants to adopt this feature for their CFI work [2] and
this patchset has been designed to be compatible with the Chrome use case.
Two system calls are involved in sealing the map: mmap() and mseal().
The new mseal() is an syscall on 64 bit CPU, and with following signature:
int mseal(void addr, size_t len, unsigned long flags)
addr/len: memory range.
flags: reserved.
mseal() blocks following operations for the given memory range.
1> Unmapping, moving to another location, and shrinking the size,
via munmap() and mremap(), can leave an empty space, therefore can
be replaced with a VMA with a new set of attributes.
2> Moving or expanding a different VMA into the current location,
via mremap().
3> Modifying a VMA via mmap(MAP_FIXED).
4> Size expansion, via mremap(), does not appear to pose any specific
risks to sealed VMAs. It is included anyway because the use case is
unclear. In any case, users can rely on merging to expand a sealed VMA.
5> mprotect() and pkey_mprotect().
6> Some destructive madvice() behaviors (e.g. MADV_DONTNEED) for anonymous
memory, when users don't have write permission to the memory. Those
behaviors can alter region contents by discarding pages, effectively a
memset(0) for anonymous memory.
The idea that inspired this patch comes from Stephen Röttger’s work in
V8 CFI [5]. Chrome browser in ChromeOS will be the first user of this
API.
Indeed, the Chrome browser has very specific requirements for sealing,
which are distinct from those of most applications. For example, in the
case of libc, sealing is only applied to read-only (RO) or read-execute
(RX) memory segments (such as .text and .RELRO) to prevent them from
becoming writable, the lifetime of those mappings are tied to the lifetime
of the process.
Chrome wants to seal two large address space reservations that are managed
by different allocators. The memory is mapped RW- and RWX respectively
but write access to it is restricted using pkeys (or in the future ARM
permission overlay extensions). The lifetime of those mappings are not
tied to the lifetime of the process, therefore, while the memory is
sealed, the allocators still need to free or discard the unused memory.
For example, with madvise(DONTNEED).
However, always allowing madvise(DONTNEED) on this range poses a security
risk. For example if a jump instruction crosses a page boundary and the
second page gets discarded, it will overwrite the target bytes with zeros
and change the control flow. Checking write-permission before the discard
operation allows us to control when the operation is valid. In this case,
the madvise will only succeed if the executing thread has PKEY write
permissions and PKRU changes are protected in software by control-flow
integrity.
Although the initial version of this patch series is targeting the Chrome
browser as its first user, it became evident during upstream discussions
that we would also want to ensure that the patch set eventually is a
complete solution for memory sealing and compatible with other use cases.
The specific scenario currently in mind is glibc's use case of loading and
sealing ELF executables. To this end, Stephen is working on a change to
glibc to add sealing support to the dynamic linker, which will seal all
non-writable segments at startup. Once this work is completed, all
applications will be able to automatically benefit from these new
protections.
In closing, I would like to formally acknowledge the valuable
contributions received during the RFC process, which were instrumental in
shaping this patch:
Jann Horn: raising awareness and providing valuable insights on the
destructive madvise operations.
Liam R. Howlett: perf optimization.
Linus Torvalds: assisting in defining system call signature and scope.
Theo de Raadt: sharing the experiences and insight gained from
implementing mimmutable() in OpenBSD.
MM perf benchmarks
==================
This patch adds a loop in the mprotect/munmap/madvise(DONTNEED) to
check the VMAs’ sealing flag, so that no partial update can be made,
when any segment within the given memory range is sealed.
To measure the performance impact of this loop, two tests are developed.
[8]
The first is measuring the time taken for a particular system call,
by using clock_gettime(CLOCK_MONOTONIC). The second is using
PERF_COUNT_HW_REF_CPU_CYCLES (exclude user space). Both tests have
similar results.
The tests have roughly below sequence:
for (i = 0; i < 1000, i++)
create 1000 mappings (1 page per VMA)
start the sampling
for (j = 0; j < 1000, j++)
mprotect one mapping
stop and save the sample
delete 1000 mappings
calculates all samples.
Below tests are performed on Intel(R) Pentium(R) Gold 7505 @ 2.00GHz,
4G memory, Chromebook.
Based on the latest upstream code:
The first test (measuring time)
syscall__ vmas t t_mseal delta_ns per_vma %
munmap__ 1 909 944 35 35 104%
munmap__ 2 1398 1502 104 52 107%
munmap__ 4 2444 2594 149 37 106%
munmap__ 8 4029 4323 293 37 107%
munmap__ 16 6647 6935 288 18 104%
munmap__ 32 11811 12398 587 18 105%
mprotect 1 439 465 26 26 106%
mprotect 2 1659 1745 86 43 105%
mprotect 4 3747 3889 142 36 104%
mprotect 8 6755 6969 215 27 103%
mprotect 16 13748 14144 396 25 103%
mprotect 32 27827 28969 1142 36 104%
madvise_ 1 240 262 22 22 109%
madvise_ 2 366 442 76 38 121%
madvise_ 4 623 751 128 32 121%
madvise_ 8 1110 1324 215 27 119%
madvise_ 16 2127 2451 324 20 115%
madvise_ 32 4109 4642 534 17 113%
The second test (measuring cpu cycle)
syscall__ vmas cpu cmseal delta_cpu per_vma %
munmap__ 1 1790 1890 100 100 106%
munmap__ 2 2819 3033 214 107 108%
munmap__ 4 4959 5271 312 78 106%
munmap__ 8 8262 8745 483 60 106%
munmap__ 16 13099 14116 1017 64 108%
munmap__ 32 23221 24785 1565 49 107%
mprotect 1 906 967 62 62 107%
mprotect 2 3019 3203 184 92 106%
mprotect 4 6149 6569 420 105 107%
mprotect 8 9978 10524 545 68 105%
mprotect 16 20448 21427 979 61 105%
mprotect 32 40972 42935 1963 61 105%
madvise_ 1 434 497 63 63 115%
madvise_ 2 752 899 147 74 120%
madvise_ 4 1313 1513 200 50 115%
madvise_ 8 2271 2627 356 44 116%
madvise_ 16 4312 4883 571 36 113%
madvise_ 32 8376 9319 943 29 111%
Based on the result, for 6.8 kernel, sealing check adds
20-40 nano seconds, or around 50-100 CPU cycles, per VMA.
In addition, I applied the sealing to 5.10 kernel:
The first test (measuring time)
syscall__ vmas t tmseal delta_ns per_vma %
munmap__ 1 357 390 33 33 109%
munmap__ 2 442 463 21 11 105%
munmap__ 4 614 634 20 5 103%
munmap__ 8 1017 1137 120 15 112%
munmap__ 16 1889 2153 263 16 114%
munmap__ 32 4109 4088 -21 -1 99%
mprotect 1 235 227 -7 -7 97%
mprotect 2 495 464 -30 -15 94%
mprotect 4 741 764 24 6 103%
mprotect 8 1434 1437 2 0 100%
mprotect 16 2958 2991 33 2 101%
mprotect 32 6431 6608 177 6 103%
madvise_ 1 191 208 16 16 109%
madvise_ 2 300 324 24 12 108%
madvise_ 4 450 473 23 6 105%
madvise_ 8 753 806 53 7 107%
madvise_ 16 1467 1592 125 8 108%
madvise_ 32 2795 3405 610 19 122%
The second test (measuring cpu cycle)
syscall__ nbr_vma cpu cmseal delta_cpu per_vma %
munmap__ 1 684 715 31 31 105%
munmap__ 2 861 898 38 19 104%
munmap__ 4 1183 1235 51 13 104%
munmap__ 8 1999 2045 46 6 102%
munmap__ 16 3839 3816 -23 -1 99%
munmap__ 32 7672 7887 216 7 103%
mprotect 1 397 443 46 46 112%
mprotect 2 738 788 50 25 107%
mprotect 4 1221 1256 35 9 103%
mprotect 8 2356 2429 72 9 103%
mprotect 16 4961 4935 -26 -2 99%
mprotect 32 9882 10172 291 9 103%
madvise_ 1 351 380 29 29 108%
madvise_ 2 565 615 49 25 109%
madvise_ 4 872 933 61 15 107%
madvise_ 8 1508 1640 132 16 109%
madvise_ 16 3078 3323 245 15 108%
madvise_ 32 5893 6704 811 25 114%
For 5.10 kernel, sealing check adds 0-15 ns in time, or 10-30
CPU cycles, there is even decrease in some cases.
It might be interesting to compare 5.10 and 6.8 kernel
The first test (measuring time)
syscall__ vmas t_5_10 t_6_8 delta_ns per_vma %
munmap__ 1 357 909 552 552 254%
munmap__ 2 442 1398 956 478 316%
munmap__ 4 614 2444 1830 458 398%
munmap__ 8 1017 4029 3012 377 396%
munmap__ 16 1889 6647 4758 297 352%
munmap__ 32 4109 11811 7702 241 287%
mprotect 1 235 439 204 204 187%
mprotect 2 495 1659 1164 582 335%
mprotect 4 741 3747 3006 752 506%
mprotect 8 1434 6755 5320 665 471%
mprotect 16 2958 13748 10790 674 465%
mprotect 32 6431 27827 21397 669 433%
madvise_ 1 191 240 49 49 125%
madvise_ 2 300 366 67 33 122%
madvise_ 4 450 623 173 43 138%
madvise_ 8 753 1110 357 45 147%
madvise_ 16 1467 2127 660 41 145%
madvise_ 32 2795 4109 1314 41 147%
The second test (measuring cpu cycle)
syscall__ vmas cpu_5_10 c_6_8 delta_cpu per_vma %
munmap__ 1 684 1790 1106 1106 262%
munmap__ 2 861 2819 1958 979 327%
munmap__ 4 1183 4959 3776 944 419%
munmap__ 8 1999 8262 6263 783 413%
munmap__ 16 3839 13099 9260 579 341%
munmap__ 32 7672 23221 15549 486 303%
mprotect 1 397 906 509 509 228%
mprotect 2 738 3019 2281 1140 409%
mprotect 4 1221 6149 4929 1232 504%
mprotect 8 2356 9978 7622 953 423%
mprotect 16 4961 20448 15487 968 412%
mprotect 32 9882 40972 31091 972 415%
madvise_ 1 351 434 82 82 123%
madvise_ 2 565 752 186 93 133%
madvise_ 4 872 1313 442 110 151%
madvise_ 8 1508 2271 763 95 151%
madvise_ 16 3078 4312 1234 77 140%
madvise_ 32 5893 8376 2483 78 142%
From 5.10 to 6.8
munmap: added 250-550 ns in time, or 500-1100 in cpu cycle, per vma.
mprotect: added 200-750 ns in time, or 500-1200 in cpu cycle, per vma.
madvise: added 33-50 ns in time, or 70-110 in cpu cycle, per vma.
In comparison to mseal, which adds 20-40 ns or 50-100 CPU cycles, the
increase from 5.10 to 6.8 is significantly larger, approximately ten times
greater for munmap and mprotect.
When I discuss the mm performance with Brian Makin, an engineer who worked
on performance, it was brought to my attention that such performance
benchmarks, which measuring millions of mm syscall in a tight loop, may
not accurately reflect real-world scenarios, such as that of a database
service. Also this is tested using a single HW and ChromeOS, the data
from another HW or distribution might be different. It might be best to
take this data with a grain of salt.
This patch (of 5):
Wire up mseal syscall for all architectures.
Link: https://lkml.kernel.org/r/20240415163527.626541-1-jeffxu@chromium.org
Link: https://lkml.kernel.org/r/20240415163527.626541-2-jeffxu@chromium.org
Signed-off-by: Jeff Xu <jeffxu@chromium.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Jann Horn <jannh@google.com> [Bug #2]
Cc: Jeff Xu <jeffxu@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Jorge Lucangeli Obes <jorgelo@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Pedro Falcato <pedro.falcato@gmail.com>
Cc: Stephen Röttger <sroettger@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Amer Al Shanawany <amer.shanawany@gmail.com>
Cc: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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# SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
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#
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# system call numbers and entry vectors for sparc
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#
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# The format is:
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# <number> <abi> <name> <entry point> <compat entry point>
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#
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# The <abi> can be common, 64, or 32 for this file.
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#
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0 common restart_syscall sys_restart_syscall
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1 32 exit sys_exit sparc_exit
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1 64 exit sparc_exit
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2 common fork sys_fork
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3 common read sys_read
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4 common write sys_write
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5 common open sys_open compat_sys_open
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6 common close sys_close
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7 common wait4 sys_wait4 compat_sys_wait4
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8 common creat sys_creat
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9 common link sys_link
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10 common unlink sys_unlink
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11 32 execv sunos_execv
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11 64 execv sys_nis_syscall
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12 common chdir sys_chdir
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13 32 chown sys_chown16
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13 64 chown sys_chown
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14 common mknod sys_mknod
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15 common chmod sys_chmod
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16 32 lchown sys_lchown16
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16 64 lchown sys_lchown
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17 common brk sys_brk
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18 common perfctr sys_nis_syscall
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19 common lseek sys_lseek compat_sys_lseek
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20 common getpid sys_getpid
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21 common capget sys_capget
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22 common capset sys_capset
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23 32 setuid sys_setuid16
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23 64 setuid sys_setuid
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24 32 getuid sys_getuid16
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24 64 getuid sys_getuid
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25 common vmsplice sys_vmsplice
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26 common ptrace sys_ptrace compat_sys_ptrace
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27 common alarm sys_alarm
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28 common sigaltstack sys_sigaltstack compat_sys_sigaltstack
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29 32 pause sys_pause
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29 64 pause sys_nis_syscall
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30 32 utime sys_utime32
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30 64 utime sys_utime
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31 32 lchown32 sys_lchown
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32 32 fchown32 sys_fchown
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33 common access sys_access
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34 common nice sys_nice
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35 32 chown32 sys_chown
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36 common sync sys_sync
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37 common kill sys_kill
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38 common stat sys_newstat compat_sys_newstat
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39 32 sendfile sys_sendfile compat_sys_sendfile
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39 64 sendfile sys_sendfile64
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40 common lstat sys_newlstat compat_sys_newlstat
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41 common dup sys_dup
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42 common pipe sys_sparc_pipe
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43 common times sys_times compat_sys_times
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44 32 getuid32 sys_getuid
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45 common umount2 sys_umount
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46 32 setgid sys_setgid16
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46 64 setgid sys_setgid
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47 32 getgid sys_getgid16
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47 64 getgid sys_getgid
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48 common signal sys_signal
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49 32 geteuid sys_geteuid16
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49 64 geteuid sys_geteuid
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50 32 getegid sys_getegid16
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50 64 getegid sys_getegid
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51 common acct sys_acct
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52 64 memory_ordering sys_memory_ordering
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53 32 getgid32 sys_getgid
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54 common ioctl sys_ioctl compat_sys_ioctl
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55 common reboot sys_reboot
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56 32 mmap2 sys_mmap2 sys32_mmap2
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57 common symlink sys_symlink
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58 common readlink sys_readlink
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59 32 execve sys_execve sys32_execve
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59 64 execve sys64_execve
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60 common umask sys_umask
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61 common chroot sys_chroot
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62 common fstat sys_newfstat compat_sys_newfstat
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63 common fstat64 sys_fstat64 compat_sys_fstat64
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64 common getpagesize sys_getpagesize
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65 common msync sys_msync
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66 common vfork sys_vfork
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67 common pread64 sys_pread64 compat_sys_pread64
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68 common pwrite64 sys_pwrite64 compat_sys_pwrite64
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69 32 geteuid32 sys_geteuid
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70 32 getegid32 sys_getegid
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71 common mmap sys_mmap
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72 32 setreuid32 sys_setreuid
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73 32 munmap sys_munmap
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73 64 munmap sys_64_munmap
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74 common mprotect sys_mprotect
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75 common madvise sys_madvise
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76 common vhangup sys_vhangup
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77 32 truncate64 sys_truncate64 compat_sys_truncate64
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78 common mincore sys_mincore
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79 32 getgroups sys_getgroups16
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79 64 getgroups sys_getgroups
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80 32 setgroups sys_setgroups16
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80 64 setgroups sys_setgroups
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81 common getpgrp sys_getpgrp
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82 32 setgroups32 sys_setgroups
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83 common setitimer sys_setitimer compat_sys_setitimer
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84 32 ftruncate64 sys_ftruncate64 compat_sys_ftruncate64
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85 common swapon sys_swapon
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86 common getitimer sys_getitimer compat_sys_getitimer
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87 32 setuid32 sys_setuid
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88 common sethostname sys_sethostname
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89 32 setgid32 sys_setgid
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90 common dup2 sys_dup2
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91 32 setfsuid32 sys_setfsuid
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92 common fcntl sys_fcntl compat_sys_fcntl
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93 common select sys_select
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94 32 setfsgid32 sys_setfsgid
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95 common fsync sys_fsync
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96 common setpriority sys_setpriority
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97 common socket sys_socket
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98 common connect sys_connect
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99 common accept sys_accept
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100 common getpriority sys_getpriority
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101 common rt_sigreturn sys_rt_sigreturn sys32_rt_sigreturn
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102 common rt_sigaction sys_rt_sigaction compat_sys_rt_sigaction
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103 common rt_sigprocmask sys_rt_sigprocmask compat_sys_rt_sigprocmask
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104 common rt_sigpending sys_rt_sigpending compat_sys_rt_sigpending
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105 32 rt_sigtimedwait sys_rt_sigtimedwait_time32 compat_sys_rt_sigtimedwait_time32
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105 64 rt_sigtimedwait sys_rt_sigtimedwait
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106 common rt_sigqueueinfo sys_rt_sigqueueinfo compat_sys_rt_sigqueueinfo
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107 common rt_sigsuspend sys_rt_sigsuspend compat_sys_rt_sigsuspend
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108 32 setresuid32 sys_setresuid
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108 64 setresuid sys_setresuid
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109 32 getresuid32 sys_getresuid
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109 64 getresuid sys_getresuid
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110 32 setresgid32 sys_setresgid
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110 64 setresgid sys_setresgid
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111 32 getresgid32 sys_getresgid
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111 64 getresgid sys_getresgid
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112 32 setregid32 sys_setregid
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113 common recvmsg sys_recvmsg compat_sys_recvmsg
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114 common sendmsg sys_sendmsg compat_sys_sendmsg
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115 32 getgroups32 sys_getgroups
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116 common gettimeofday sys_gettimeofday compat_sys_gettimeofday
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117 common getrusage sys_getrusage compat_sys_getrusage
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118 common getsockopt sys_getsockopt sys_getsockopt
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119 common getcwd sys_getcwd
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120 common readv sys_readv
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121 common writev sys_writev
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122 common settimeofday sys_settimeofday compat_sys_settimeofday
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123 32 fchown sys_fchown16
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123 64 fchown sys_fchown
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124 common fchmod sys_fchmod
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125 common recvfrom sys_recvfrom
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126 32 setreuid sys_setreuid16
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126 64 setreuid sys_setreuid
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127 32 setregid sys_setregid16
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127 64 setregid sys_setregid
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128 common rename sys_rename
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129 common truncate sys_truncate compat_sys_truncate
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130 common ftruncate sys_ftruncate compat_sys_ftruncate
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131 common flock sys_flock
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132 common lstat64 sys_lstat64 compat_sys_lstat64
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133 common sendto sys_sendto
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134 common shutdown sys_shutdown
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135 common socketpair sys_socketpair
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136 common mkdir sys_mkdir
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137 common rmdir sys_rmdir
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138 32 utimes sys_utimes_time32
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138 64 utimes sys_utimes
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139 common stat64 sys_stat64 compat_sys_stat64
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140 common sendfile64 sys_sendfile64
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141 common getpeername sys_getpeername
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142 32 futex sys_futex_time32
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142 64 futex sys_futex
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143 common gettid sys_gettid
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144 common getrlimit sys_getrlimit compat_sys_getrlimit
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145 common setrlimit sys_setrlimit compat_sys_setrlimit
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146 common pivot_root sys_pivot_root
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147 common prctl sys_prctl
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148 common pciconfig_read sys_pciconfig_read
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149 common pciconfig_write sys_pciconfig_write
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150 common getsockname sys_getsockname
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151 common inotify_init sys_inotify_init
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152 common inotify_add_watch sys_inotify_add_watch
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153 common poll sys_poll
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154 common getdents64 sys_getdents64
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155 32 fcntl64 sys_fcntl64 compat_sys_fcntl64
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156 common inotify_rm_watch sys_inotify_rm_watch
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157 common statfs sys_statfs compat_sys_statfs
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158 common fstatfs sys_fstatfs compat_sys_fstatfs
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159 common umount sys_oldumount
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160 common sched_set_affinity sys_sched_setaffinity compat_sys_sched_setaffinity
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161 common sched_get_affinity sys_sched_getaffinity compat_sys_sched_getaffinity
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162 common getdomainname sys_getdomainname
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163 common setdomainname sys_setdomainname
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164 64 utrap_install sys_utrap_install
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165 common quotactl sys_quotactl
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166 common set_tid_address sys_set_tid_address
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167 common mount sys_mount
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168 common ustat sys_ustat compat_sys_ustat
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169 common setxattr sys_setxattr
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170 common lsetxattr sys_lsetxattr
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171 common fsetxattr sys_fsetxattr
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172 common getxattr sys_getxattr
|
|
173 common lgetxattr sys_lgetxattr
|
|
174 common getdents sys_getdents compat_sys_getdents
|
|
175 common setsid sys_setsid
|
|
176 common fchdir sys_fchdir
|
|
177 common fgetxattr sys_fgetxattr
|
|
178 common listxattr sys_listxattr
|
|
179 common llistxattr sys_llistxattr
|
|
180 common flistxattr sys_flistxattr
|
|
181 common removexattr sys_removexattr
|
|
182 common lremovexattr sys_lremovexattr
|
|
183 32 sigpending sys_sigpending compat_sys_sigpending
|
|
183 64 sigpending sys_nis_syscall
|
|
184 common query_module sys_ni_syscall
|
|
185 common setpgid sys_setpgid
|
|
186 common fremovexattr sys_fremovexattr
|
|
187 common tkill sys_tkill
|
|
188 32 exit_group sys_exit_group sparc_exit_group
|
|
188 64 exit_group sparc_exit_group
|
|
189 common uname sys_newuname
|
|
190 common init_module sys_init_module
|
|
191 32 personality sys_personality sys_sparc64_personality
|
|
191 64 personality sys_sparc64_personality
|
|
192 32 remap_file_pages sys_sparc_remap_file_pages sys_remap_file_pages
|
|
192 64 remap_file_pages sys_remap_file_pages
|
|
193 common epoll_create sys_epoll_create
|
|
194 common epoll_ctl sys_epoll_ctl
|
|
195 common epoll_wait sys_epoll_wait
|
|
196 common ioprio_set sys_ioprio_set
|
|
197 common getppid sys_getppid
|
|
198 32 sigaction sys_sparc_sigaction compat_sys_sparc_sigaction
|
|
198 64 sigaction sys_nis_syscall
|
|
199 common sgetmask sys_sgetmask
|
|
200 common ssetmask sys_ssetmask
|
|
201 32 sigsuspend sys_sigsuspend
|
|
201 64 sigsuspend sys_nis_syscall
|
|
202 common oldlstat sys_newlstat compat_sys_newlstat
|
|
203 common uselib sys_uselib
|
|
204 32 readdir sys_old_readdir compat_sys_old_readdir
|
|
204 64 readdir sys_nis_syscall
|
|
205 common readahead sys_readahead compat_sys_readahead
|
|
206 common socketcall sys_socketcall sys32_socketcall
|
|
207 common syslog sys_syslog
|
|
208 common lookup_dcookie sys_ni_syscall
|
|
209 common fadvise64 sys_fadvise64 compat_sys_fadvise64
|
|
210 common fadvise64_64 sys_fadvise64_64 compat_sys_fadvise64_64
|
|
211 common tgkill sys_tgkill
|
|
212 common waitpid sys_waitpid
|
|
213 common swapoff sys_swapoff
|
|
214 common sysinfo sys_sysinfo compat_sys_sysinfo
|
|
215 32 ipc sys_ipc compat_sys_ipc
|
|
215 64 ipc sys_sparc_ipc
|
|
216 32 sigreturn sys_sigreturn sys32_sigreturn
|
|
216 64 sigreturn sys_nis_syscall
|
|
217 common clone sys_clone
|
|
218 common ioprio_get sys_ioprio_get
|
|
219 32 adjtimex sys_adjtimex_time32
|
|
219 64 adjtimex sys_sparc_adjtimex
|
|
220 32 sigprocmask sys_sigprocmask compat_sys_sigprocmask
|
|
220 64 sigprocmask sys_nis_syscall
|
|
221 common create_module sys_ni_syscall
|
|
222 common delete_module sys_delete_module
|
|
223 common get_kernel_syms sys_ni_syscall
|
|
224 common getpgid sys_getpgid
|
|
225 common bdflush sys_ni_syscall
|
|
226 common sysfs sys_sysfs
|
|
227 common afs_syscall sys_nis_syscall
|
|
228 common setfsuid sys_setfsuid16
|
|
229 common setfsgid sys_setfsgid16
|
|
230 common _newselect sys_select compat_sys_select
|
|
231 32 time sys_time32
|
|
232 common splice sys_splice
|
|
233 32 stime sys_stime32
|
|
233 64 stime sys_stime
|
|
234 common statfs64 sys_statfs64 compat_sys_statfs64
|
|
235 common fstatfs64 sys_fstatfs64 compat_sys_fstatfs64
|
|
236 common _llseek sys_llseek
|
|
237 common mlock sys_mlock
|
|
238 common munlock sys_munlock
|
|
239 common mlockall sys_mlockall
|
|
240 common munlockall sys_munlockall
|
|
241 common sched_setparam sys_sched_setparam
|
|
242 common sched_getparam sys_sched_getparam
|
|
243 common sched_setscheduler sys_sched_setscheduler
|
|
244 common sched_getscheduler sys_sched_getscheduler
|
|
245 common sched_yield sys_sched_yield
|
|
246 common sched_get_priority_max sys_sched_get_priority_max
|
|
247 common sched_get_priority_min sys_sched_get_priority_min
|
|
248 32 sched_rr_get_interval sys_sched_rr_get_interval_time32
|
|
248 64 sched_rr_get_interval sys_sched_rr_get_interval
|
|
249 32 nanosleep sys_nanosleep_time32
|
|
249 64 nanosleep sys_nanosleep
|
|
250 32 mremap sys_mremap
|
|
250 64 mremap sys_64_mremap
|
|
251 common _sysctl sys_ni_syscall
|
|
252 common getsid sys_getsid
|
|
253 common fdatasync sys_fdatasync
|
|
254 32 nfsservctl sys_ni_syscall sys_nis_syscall
|
|
254 64 nfsservctl sys_nis_syscall
|
|
255 common sync_file_range sys_sync_file_range compat_sys_sync_file_range
|
|
256 32 clock_settime sys_clock_settime32
|
|
256 64 clock_settime sys_clock_settime
|
|
257 32 clock_gettime sys_clock_gettime32
|
|
257 64 clock_gettime sys_clock_gettime
|
|
258 32 clock_getres sys_clock_getres_time32
|
|
258 64 clock_getres sys_clock_getres
|
|
259 32 clock_nanosleep sys_clock_nanosleep_time32
|
|
259 64 clock_nanosleep sys_clock_nanosleep
|
|
260 common sched_getaffinity sys_sched_getaffinity compat_sys_sched_getaffinity
|
|
261 common sched_setaffinity sys_sched_setaffinity compat_sys_sched_setaffinity
|
|
262 32 timer_settime sys_timer_settime32
|
|
262 64 timer_settime sys_timer_settime
|
|
263 32 timer_gettime sys_timer_gettime32
|
|
263 64 timer_gettime sys_timer_gettime
|
|
264 common timer_getoverrun sys_timer_getoverrun
|
|
265 common timer_delete sys_timer_delete
|
|
266 common timer_create sys_timer_create compat_sys_timer_create
|
|
# 267 was vserver
|
|
267 common vserver sys_nis_syscall
|
|
268 common io_setup sys_io_setup compat_sys_io_setup
|
|
269 common io_destroy sys_io_destroy
|
|
270 common io_submit sys_io_submit compat_sys_io_submit
|
|
271 common io_cancel sys_io_cancel
|
|
272 32 io_getevents sys_io_getevents_time32
|
|
272 64 io_getevents sys_io_getevents
|
|
273 common mq_open sys_mq_open compat_sys_mq_open
|
|
274 common mq_unlink sys_mq_unlink
|
|
275 32 mq_timedsend sys_mq_timedsend_time32
|
|
275 64 mq_timedsend sys_mq_timedsend
|
|
276 32 mq_timedreceive sys_mq_timedreceive_time32
|
|
276 64 mq_timedreceive sys_mq_timedreceive
|
|
277 common mq_notify sys_mq_notify compat_sys_mq_notify
|
|
278 common mq_getsetattr sys_mq_getsetattr compat_sys_mq_getsetattr
|
|
279 common waitid sys_waitid compat_sys_waitid
|
|
280 common tee sys_tee
|
|
281 common add_key sys_add_key
|
|
282 common request_key sys_request_key
|
|
283 common keyctl sys_keyctl compat_sys_keyctl
|
|
284 common openat sys_openat compat_sys_openat
|
|
285 common mkdirat sys_mkdirat
|
|
286 common mknodat sys_mknodat
|
|
287 common fchownat sys_fchownat
|
|
288 32 futimesat sys_futimesat_time32
|
|
288 64 futimesat sys_futimesat
|
|
289 common fstatat64 sys_fstatat64 compat_sys_fstatat64
|
|
290 common unlinkat sys_unlinkat
|
|
291 common renameat sys_renameat
|
|
292 common linkat sys_linkat
|
|
293 common symlinkat sys_symlinkat
|
|
294 common readlinkat sys_readlinkat
|
|
295 common fchmodat sys_fchmodat
|
|
296 common faccessat sys_faccessat
|
|
297 32 pselect6 sys_pselect6_time32 compat_sys_pselect6_time32
|
|
297 64 pselect6 sys_pselect6
|
|
298 32 ppoll sys_ppoll_time32 compat_sys_ppoll_time32
|
|
298 64 ppoll sys_ppoll
|
|
299 common unshare sys_unshare
|
|
300 common set_robust_list sys_set_robust_list compat_sys_set_robust_list
|
|
301 common get_robust_list sys_get_robust_list compat_sys_get_robust_list
|
|
302 common migrate_pages sys_migrate_pages
|
|
303 common mbind sys_mbind
|
|
304 common get_mempolicy sys_get_mempolicy
|
|
305 common set_mempolicy sys_set_mempolicy
|
|
306 common kexec_load sys_kexec_load compat_sys_kexec_load
|
|
307 common move_pages sys_move_pages
|
|
308 common getcpu sys_getcpu
|
|
309 common epoll_pwait sys_epoll_pwait compat_sys_epoll_pwait
|
|
310 32 utimensat sys_utimensat_time32
|
|
310 64 utimensat sys_utimensat
|
|
311 common signalfd sys_signalfd compat_sys_signalfd
|
|
312 common timerfd_create sys_timerfd_create
|
|
313 common eventfd sys_eventfd
|
|
314 common fallocate sys_fallocate compat_sys_fallocate
|
|
315 32 timerfd_settime sys_timerfd_settime32
|
|
315 64 timerfd_settime sys_timerfd_settime
|
|
316 32 timerfd_gettime sys_timerfd_gettime32
|
|
316 64 timerfd_gettime sys_timerfd_gettime
|
|
317 common signalfd4 sys_signalfd4 compat_sys_signalfd4
|
|
318 common eventfd2 sys_eventfd2
|
|
319 common epoll_create1 sys_epoll_create1
|
|
320 common dup3 sys_dup3
|
|
321 common pipe2 sys_pipe2
|
|
322 common inotify_init1 sys_inotify_init1
|
|
323 common accept4 sys_accept4
|
|
324 common preadv sys_preadv compat_sys_preadv
|
|
325 common pwritev sys_pwritev compat_sys_pwritev
|
|
326 common rt_tgsigqueueinfo sys_rt_tgsigqueueinfo compat_sys_rt_tgsigqueueinfo
|
|
327 common perf_event_open sys_perf_event_open
|
|
328 32 recvmmsg sys_recvmmsg_time32 compat_sys_recvmmsg_time32
|
|
328 64 recvmmsg sys_recvmmsg
|
|
329 common fanotify_init sys_fanotify_init
|
|
330 common fanotify_mark sys_fanotify_mark compat_sys_fanotify_mark
|
|
331 common prlimit64 sys_prlimit64
|
|
332 common name_to_handle_at sys_name_to_handle_at
|
|
333 common open_by_handle_at sys_open_by_handle_at compat_sys_open_by_handle_at
|
|
334 32 clock_adjtime sys_clock_adjtime32
|
|
334 64 clock_adjtime sys_sparc_clock_adjtime
|
|
335 common syncfs sys_syncfs
|
|
336 common sendmmsg sys_sendmmsg compat_sys_sendmmsg
|
|
337 common setns sys_setns
|
|
338 common process_vm_readv sys_process_vm_readv
|
|
339 common process_vm_writev sys_process_vm_writev
|
|
340 32 kern_features sys_ni_syscall sys_kern_features
|
|
340 64 kern_features sys_kern_features
|
|
341 common kcmp sys_kcmp
|
|
342 common finit_module sys_finit_module
|
|
343 common sched_setattr sys_sched_setattr
|
|
344 common sched_getattr sys_sched_getattr
|
|
345 common renameat2 sys_renameat2
|
|
346 common seccomp sys_seccomp
|
|
347 common getrandom sys_getrandom
|
|
348 common memfd_create sys_memfd_create
|
|
349 common bpf sys_bpf
|
|
350 32 execveat sys_execveat sys32_execveat
|
|
350 64 execveat sys64_execveat
|
|
351 common membarrier sys_membarrier
|
|
352 common userfaultfd sys_userfaultfd
|
|
353 common bind sys_bind
|
|
354 common listen sys_listen
|
|
355 common setsockopt sys_setsockopt sys_setsockopt
|
|
356 common mlock2 sys_mlock2
|
|
357 common copy_file_range sys_copy_file_range
|
|
358 common preadv2 sys_preadv2 compat_sys_preadv2
|
|
359 common pwritev2 sys_pwritev2 compat_sys_pwritev2
|
|
360 common statx sys_statx
|
|
361 32 io_pgetevents sys_io_pgetevents_time32 compat_sys_io_pgetevents
|
|
361 64 io_pgetevents sys_io_pgetevents
|
|
362 common pkey_mprotect sys_pkey_mprotect
|
|
363 common pkey_alloc sys_pkey_alloc
|
|
364 common pkey_free sys_pkey_free
|
|
365 common rseq sys_rseq
|
|
# room for arch specific syscalls
|
|
392 64 semtimedop sys_semtimedop
|
|
393 common semget sys_semget
|
|
394 common semctl sys_semctl compat_sys_semctl
|
|
395 common shmget sys_shmget
|
|
396 common shmctl sys_shmctl compat_sys_shmctl
|
|
397 common shmat sys_shmat compat_sys_shmat
|
|
398 common shmdt sys_shmdt
|
|
399 common msgget sys_msgget
|
|
400 common msgsnd sys_msgsnd compat_sys_msgsnd
|
|
401 common msgrcv sys_msgrcv compat_sys_msgrcv
|
|
402 common msgctl sys_msgctl compat_sys_msgctl
|
|
403 32 clock_gettime64 sys_clock_gettime sys_clock_gettime
|
|
404 32 clock_settime64 sys_clock_settime sys_clock_settime
|
|
405 32 clock_adjtime64 sys_clock_adjtime sys_clock_adjtime
|
|
406 32 clock_getres_time64 sys_clock_getres sys_clock_getres
|
|
407 32 clock_nanosleep_time64 sys_clock_nanosleep sys_clock_nanosleep
|
|
408 32 timer_gettime64 sys_timer_gettime sys_timer_gettime
|
|
409 32 timer_settime64 sys_timer_settime sys_timer_settime
|
|
410 32 timerfd_gettime64 sys_timerfd_gettime sys_timerfd_gettime
|
|
411 32 timerfd_settime64 sys_timerfd_settime sys_timerfd_settime
|
|
412 32 utimensat_time64 sys_utimensat sys_utimensat
|
|
413 32 pselect6_time64 sys_pselect6 compat_sys_pselect6_time64
|
|
414 32 ppoll_time64 sys_ppoll compat_sys_ppoll_time64
|
|
416 32 io_pgetevents_time64 sys_io_pgetevents sys_io_pgetevents
|
|
417 32 recvmmsg_time64 sys_recvmmsg compat_sys_recvmmsg_time64
|
|
418 32 mq_timedsend_time64 sys_mq_timedsend sys_mq_timedsend
|
|
419 32 mq_timedreceive_time64 sys_mq_timedreceive sys_mq_timedreceive
|
|
420 32 semtimedop_time64 sys_semtimedop sys_semtimedop
|
|
421 32 rt_sigtimedwait_time64 sys_rt_sigtimedwait compat_sys_rt_sigtimedwait_time64
|
|
422 32 futex_time64 sys_futex sys_futex
|
|
423 32 sched_rr_get_interval_time64 sys_sched_rr_get_interval sys_sched_rr_get_interval
|
|
424 common pidfd_send_signal sys_pidfd_send_signal
|
|
425 common io_uring_setup sys_io_uring_setup
|
|
426 common io_uring_enter sys_io_uring_enter
|
|
427 common io_uring_register sys_io_uring_register
|
|
428 common open_tree sys_open_tree
|
|
429 common move_mount sys_move_mount
|
|
430 common fsopen sys_fsopen
|
|
431 common fsconfig sys_fsconfig
|
|
432 common fsmount sys_fsmount
|
|
433 common fspick sys_fspick
|
|
434 common pidfd_open sys_pidfd_open
|
|
# 435 reserved for clone3
|
|
436 common close_range sys_close_range
|
|
437 common openat2 sys_openat2
|
|
438 common pidfd_getfd sys_pidfd_getfd
|
|
439 common faccessat2 sys_faccessat2
|
|
440 common process_madvise sys_process_madvise
|
|
441 common epoll_pwait2 sys_epoll_pwait2 compat_sys_epoll_pwait2
|
|
442 common mount_setattr sys_mount_setattr
|
|
443 common quotactl_fd sys_quotactl_fd
|
|
444 common landlock_create_ruleset sys_landlock_create_ruleset
|
|
445 common landlock_add_rule sys_landlock_add_rule
|
|
446 common landlock_restrict_self sys_landlock_restrict_self
|
|
# 447 reserved for memfd_secret
|
|
448 common process_mrelease sys_process_mrelease
|
|
449 common futex_waitv sys_futex_waitv
|
|
450 common set_mempolicy_home_node sys_set_mempolicy_home_node
|
|
451 common cachestat sys_cachestat
|
|
452 common fchmodat2 sys_fchmodat2
|
|
453 common map_shadow_stack sys_map_shadow_stack
|
|
454 common futex_wake sys_futex_wake
|
|
455 common futex_wait sys_futex_wait
|
|
456 common futex_requeue sys_futex_requeue
|
|
457 common statmount sys_statmount
|
|
458 common listmount sys_listmount
|
|
459 common lsm_get_self_attr sys_lsm_get_self_attr
|
|
460 common lsm_set_self_attr sys_lsm_set_self_attr
|
|
461 common lsm_list_modules sys_lsm_list_modules
|
|
462 common mseal sys_mseal
|