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linux/arch/m68k/kernel/syscalls/syscall.tbl
Jeff Xu ff388fe5c4 mseal: wire up mseal syscall 
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>
2024-05-23 19:40:26 -07:00

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# SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
#
# system call numbers and entry vectors for m68k
#
# The format is:
# <number> <abi> <name> <entry point>
#
# The <abi> is always "common" for this file
#
0 common restart_syscall sys_restart_syscall
1 common exit sys_exit
2 common fork __sys_fork
3 common read sys_read
4 common write sys_write
5 common open sys_open
6 common close sys_close
7 common waitpid sys_waitpid
8 common creat sys_creat
9 common link sys_link
10 common unlink sys_unlink
11 common execve sys_execve
12 common chdir sys_chdir
13 common time sys_time32
14 common mknod sys_mknod
15 common chmod sys_chmod
16 common chown sys_chown16
# 17 was break
18 common oldstat sys_stat
19 common lseek sys_lseek
20 common getpid sys_getpid
21 common mount sys_mount
22 common umount sys_oldumount
23 common setuid sys_setuid16
24 common getuid sys_getuid16
25 common stime sys_stime32
26 common ptrace sys_ptrace
27 common alarm sys_alarm
28 common oldfstat sys_fstat
29 common pause sys_pause
30 common utime sys_utime32
# 31 was stty
# 32 was gtty
33 common access sys_access
34 common nice sys_nice
# 35 was ftime
36 common sync sys_sync
37 common kill sys_kill
38 common rename sys_rename
39 common mkdir sys_mkdir
40 common rmdir sys_rmdir
41 common dup sys_dup
42 common pipe sys_pipe
43 common times sys_times
# 44 was prof
45 common brk sys_brk
46 common setgid sys_setgid16
47 common getgid sys_getgid16
48 common signal sys_signal
49 common geteuid sys_geteuid16
50 common getegid sys_getegid16
51 common acct sys_acct
52 common umount2 sys_umount
# 53 was lock
54 common ioctl sys_ioctl
55 common fcntl sys_fcntl
# 56 was mpx
57 common setpgid sys_setpgid
# 58 was ulimit
# 59 was oldolduname
60 common umask sys_umask
61 common chroot sys_chroot
62 common ustat sys_ustat
63 common dup2 sys_dup2
64 common getppid sys_getppid
65 common getpgrp sys_getpgrp
66 common setsid sys_setsid
67 common sigaction sys_sigaction
68 common sgetmask sys_sgetmask
69 common ssetmask sys_ssetmask
70 common setreuid sys_setreuid16
71 common setregid sys_setregid16
72 common sigsuspend sys_sigsuspend
73 common sigpending sys_sigpending
74 common sethostname sys_sethostname
75 common setrlimit sys_setrlimit
76 common getrlimit sys_old_getrlimit
77 common getrusage sys_getrusage
78 common gettimeofday sys_gettimeofday
79 common settimeofday sys_settimeofday
80 common getgroups sys_getgroups16
81 common setgroups sys_setgroups16
82 common select sys_old_select
83 common symlink sys_symlink
84 common oldlstat sys_lstat
85 common readlink sys_readlink
86 common uselib sys_uselib
87 common swapon sys_swapon
88 common reboot sys_reboot
89 common readdir sys_old_readdir
90 common mmap sys_old_mmap
91 common munmap sys_munmap
92 common truncate sys_truncate
93 common ftruncate sys_ftruncate
94 common fchmod sys_fchmod
95 common fchown sys_fchown16
96 common getpriority sys_getpriority
97 common setpriority sys_setpriority
# 98 was profil
99 common statfs sys_statfs
100 common fstatfs sys_fstatfs
# 101 was ioperm
102 common socketcall sys_socketcall
103 common syslog sys_syslog
104 common setitimer sys_setitimer
105 common getitimer sys_getitimer
106 common stat sys_newstat
107 common lstat sys_newlstat
108 common fstat sys_newfstat
# 109 was olduname
# 110 was iopl
111 common vhangup sys_vhangup
# 112 was idle
# 113 was vm86
114 common wait4 sys_wait4
115 common swapoff sys_swapoff
116 common sysinfo sys_sysinfo
117 common ipc sys_ipc
118 common fsync sys_fsync
119 common sigreturn sys_sigreturn
120 common clone __sys_clone
121 common setdomainname sys_setdomainname
122 common uname sys_newuname
123 common cacheflush sys_cacheflush
124 common adjtimex sys_adjtimex_time32
125 common mprotect sys_mprotect
126 common sigprocmask sys_sigprocmask
127 common create_module sys_ni_syscall
128 common init_module sys_init_module
129 common delete_module sys_delete_module
130 common get_kernel_syms sys_ni_syscall
131 common quotactl sys_quotactl
132 common getpgid sys_getpgid
133 common fchdir sys_fchdir
134 common bdflush sys_ni_syscall
135 common sysfs sys_sysfs
136 common personality sys_personality
# 137 was afs_syscall
138 common setfsuid sys_setfsuid16
139 common setfsgid sys_setfsgid16
140 common _llseek sys_llseek
141 common getdents sys_getdents
142 common _newselect sys_select
143 common flock sys_flock
144 common msync sys_msync
145 common readv sys_readv
146 common writev sys_writev
147 common getsid sys_getsid
148 common fdatasync sys_fdatasync
149 common _sysctl sys_ni_syscall
150 common mlock sys_mlock
151 common munlock sys_munlock
152 common mlockall sys_mlockall
153 common munlockall sys_munlockall
154 common sched_setparam sys_sched_setparam
155 common sched_getparam sys_sched_getparam
156 common sched_setscheduler sys_sched_setscheduler
157 common sched_getscheduler sys_sched_getscheduler
158 common sched_yield sys_sched_yield
159 common sched_get_priority_max sys_sched_get_priority_max
160 common sched_get_priority_min sys_sched_get_priority_min
161 common sched_rr_get_interval sys_sched_rr_get_interval_time32
162 common nanosleep sys_nanosleep_time32
163 common mremap sys_mremap
164 common setresuid sys_setresuid16
165 common getresuid sys_getresuid16
166 common getpagesize sys_getpagesize
167 common query_module sys_ni_syscall
168 common poll sys_poll
169 common nfsservctl sys_ni_syscall
170 common setresgid sys_setresgid16
171 common getresgid sys_getresgid16
172 common prctl sys_prctl
173 common rt_sigreturn sys_rt_sigreturn
174 common rt_sigaction sys_rt_sigaction
175 common rt_sigprocmask sys_rt_sigprocmask
176 common rt_sigpending sys_rt_sigpending
177 common rt_sigtimedwait sys_rt_sigtimedwait_time32
178 common rt_sigqueueinfo sys_rt_sigqueueinfo
179 common rt_sigsuspend sys_rt_sigsuspend
180 common pread64 sys_pread64
181 common pwrite64 sys_pwrite64
182 common lchown sys_lchown16
183 common getcwd sys_getcwd
184 common capget sys_capget
185 common capset sys_capset
186 common sigaltstack sys_sigaltstack
187 common sendfile sys_sendfile
188 common getpmsg sys_ni_syscall
189 common putpmsg sys_ni_syscall
190 common vfork __sys_vfork
191 common ugetrlimit sys_getrlimit
192 common mmap2 sys_mmap2
193 common truncate64 sys_truncate64
194 common ftruncate64 sys_ftruncate64
195 common stat64 sys_stat64
196 common lstat64 sys_lstat64
197 common fstat64 sys_fstat64
198 common chown32 sys_chown
199 common getuid32 sys_getuid
200 common getgid32 sys_getgid
201 common geteuid32 sys_geteuid
202 common getegid32 sys_getegid
203 common setreuid32 sys_setreuid
204 common setregid32 sys_setregid
205 common getgroups32 sys_getgroups
206 common setgroups32 sys_setgroups
207 common fchown32 sys_fchown
208 common setresuid32 sys_setresuid
209 common getresuid32 sys_getresuid
210 common setresgid32 sys_setresgid
211 common getresgid32 sys_getresgid
212 common lchown32 sys_lchown
213 common setuid32 sys_setuid
214 common setgid32 sys_setgid
215 common setfsuid32 sys_setfsuid
216 common setfsgid32 sys_setfsgid
217 common pivot_root sys_pivot_root
# 218 is reserved
# 219 is reserved
220 common getdents64 sys_getdents64
221 common gettid sys_gettid
222 common tkill sys_tkill
223 common setxattr sys_setxattr
224 common lsetxattr sys_lsetxattr
225 common fsetxattr sys_fsetxattr
226 common getxattr sys_getxattr
227 common lgetxattr sys_lgetxattr
228 common fgetxattr sys_fgetxattr
229 common listxattr sys_listxattr
230 common llistxattr sys_llistxattr
231 common flistxattr sys_flistxattr
232 common removexattr sys_removexattr
233 common lremovexattr sys_lremovexattr
234 common fremovexattr sys_fremovexattr
235 common futex sys_futex_time32
236 common sendfile64 sys_sendfile64
237 common mincore sys_mincore
238 common madvise sys_madvise
239 common fcntl64 sys_fcntl64
240 common readahead sys_readahead
241 common io_setup sys_io_setup
242 common io_destroy sys_io_destroy
243 common io_getevents sys_io_getevents_time32
244 common io_submit sys_io_submit
245 common io_cancel sys_io_cancel
246 common fadvise64 sys_fadvise64
247 common exit_group sys_exit_group
248 common lookup_dcookie sys_ni_syscall
249 common epoll_create sys_epoll_create
250 common epoll_ctl sys_epoll_ctl
251 common epoll_wait sys_epoll_wait
252 common remap_file_pages sys_remap_file_pages
253 common set_tid_address sys_set_tid_address
254 common timer_create sys_timer_create
255 common timer_settime sys_timer_settime32
256 common timer_gettime sys_timer_gettime32
257 common timer_getoverrun sys_timer_getoverrun
258 common timer_delete sys_timer_delete
259 common clock_settime sys_clock_settime32
260 common clock_gettime sys_clock_gettime32
261 common clock_getres sys_clock_getres_time32
262 common clock_nanosleep sys_clock_nanosleep_time32
263 common statfs64 sys_statfs64
264 common fstatfs64 sys_fstatfs64
265 common tgkill sys_tgkill
266 common utimes sys_utimes_time32
267 common fadvise64_64 sys_fadvise64_64
268 common mbind sys_mbind
269 common get_mempolicy sys_get_mempolicy
270 common set_mempolicy sys_set_mempolicy
271 common mq_open sys_mq_open
272 common mq_unlink sys_mq_unlink
273 common mq_timedsend sys_mq_timedsend_time32
274 common mq_timedreceive sys_mq_timedreceive_time32
275 common mq_notify sys_mq_notify
276 common mq_getsetattr sys_mq_getsetattr
277 common waitid sys_waitid
# 278 was vserver
279 common add_key sys_add_key
280 common request_key sys_request_key
281 common keyctl sys_keyctl
282 common ioprio_set sys_ioprio_set
283 common ioprio_get sys_ioprio_get
284 common inotify_init sys_inotify_init
285 common inotify_add_watch sys_inotify_add_watch
286 common inotify_rm_watch sys_inotify_rm_watch
287 common migrate_pages sys_migrate_pages
288 common openat sys_openat
289 common mkdirat sys_mkdirat
290 common mknodat sys_mknodat
291 common fchownat sys_fchownat
292 common futimesat sys_futimesat_time32
293 common fstatat64 sys_fstatat64
294 common unlinkat sys_unlinkat
295 common renameat sys_renameat
296 common linkat sys_linkat
297 common symlinkat sys_symlinkat
298 common readlinkat sys_readlinkat
299 common fchmodat sys_fchmodat
300 common faccessat sys_faccessat
301 common pselect6 sys_pselect6_time32
302 common ppoll sys_ppoll_time32
303 common unshare sys_unshare
304 common set_robust_list sys_set_robust_list
305 common get_robust_list sys_get_robust_list
306 common splice sys_splice
307 common sync_file_range sys_sync_file_range
308 common tee sys_tee
309 common vmsplice sys_vmsplice
310 common move_pages sys_move_pages
311 common sched_setaffinity sys_sched_setaffinity
312 common sched_getaffinity sys_sched_getaffinity
313 common kexec_load sys_kexec_load
314 common getcpu sys_getcpu
315 common epoll_pwait sys_epoll_pwait
316 common utimensat sys_utimensat_time32
317 common signalfd sys_signalfd
318 common timerfd_create sys_timerfd_create
319 common eventfd sys_eventfd
320 common fallocate sys_fallocate
321 common timerfd_settime sys_timerfd_settime32
322 common timerfd_gettime sys_timerfd_gettime32
323 common signalfd4 sys_signalfd4
324 common eventfd2 sys_eventfd2
325 common epoll_create1 sys_epoll_create1
326 common dup3 sys_dup3
327 common pipe2 sys_pipe2
328 common inotify_init1 sys_inotify_init1
329 common preadv sys_preadv
330 common pwritev sys_pwritev
331 common rt_tgsigqueueinfo sys_rt_tgsigqueueinfo
332 common perf_event_open sys_perf_event_open
333 common get_thread_area sys_get_thread_area
334 common set_thread_area sys_set_thread_area
335 common atomic_cmpxchg_32 sys_atomic_cmpxchg_32
336 common atomic_barrier sys_atomic_barrier
337 common fanotify_init sys_fanotify_init
338 common fanotify_mark sys_fanotify_mark
339 common prlimit64 sys_prlimit64
340 common name_to_handle_at sys_name_to_handle_at
341 common open_by_handle_at sys_open_by_handle_at
342 common clock_adjtime sys_clock_adjtime32
343 common syncfs sys_syncfs
344 common setns sys_setns
345 common process_vm_readv sys_process_vm_readv
346 common process_vm_writev sys_process_vm_writev
347 common kcmp sys_kcmp
348 common finit_module sys_finit_module
349 common sched_setattr sys_sched_setattr
350 common sched_getattr sys_sched_getattr
351 common renameat2 sys_renameat2
352 common getrandom sys_getrandom
353 common memfd_create sys_memfd_create
354 common bpf sys_bpf
355 common execveat sys_execveat
356 common socket sys_socket
357 common socketpair sys_socketpair
358 common bind sys_bind
359 common connect sys_connect
360 common listen sys_listen
361 common accept4 sys_accept4
362 common getsockopt sys_getsockopt
363 common setsockopt sys_setsockopt
364 common getsockname sys_getsockname
365 common getpeername sys_getpeername
366 common sendto sys_sendto
367 common sendmsg sys_sendmsg
368 common recvfrom sys_recvfrom
369 common recvmsg sys_recvmsg
370 common shutdown sys_shutdown
371 common recvmmsg sys_recvmmsg_time32
372 common sendmmsg sys_sendmmsg
373 common userfaultfd sys_userfaultfd
374 common membarrier sys_membarrier
375 common mlock2 sys_mlock2
376 common copy_file_range sys_copy_file_range
377 common preadv2 sys_preadv2
378 common pwritev2 sys_pwritev2
379 common statx sys_statx
380 common seccomp sys_seccomp
381 common pkey_mprotect sys_pkey_mprotect
382 common pkey_alloc sys_pkey_alloc
383 common pkey_free sys_pkey_free
384 common rseq sys_rseq
# room for arch specific calls
393 common semget sys_semget
394 common semctl sys_semctl
395 common shmget sys_shmget
396 common shmctl sys_shmctl
397 common shmat sys_shmat
398 common shmdt sys_shmdt
399 common msgget sys_msgget
400 common msgsnd sys_msgsnd
401 common msgrcv sys_msgrcv
402 common msgctl sys_msgctl
403 common clock_gettime64 sys_clock_gettime
404 common clock_settime64 sys_clock_settime
405 common clock_adjtime64 sys_clock_adjtime
406 common clock_getres_time64 sys_clock_getres
407 common clock_nanosleep_time64 sys_clock_nanosleep
408 common timer_gettime64 sys_timer_gettime
409 common timer_settime64 sys_timer_settime
410 common timerfd_gettime64 sys_timerfd_gettime
411 common timerfd_settime64 sys_timerfd_settime
412 common utimensat_time64 sys_utimensat
413 common pselect6_time64 sys_pselect6
414 common ppoll_time64 sys_ppoll
416 common io_pgetevents_time64 sys_io_pgetevents
417 common recvmmsg_time64 sys_recvmmsg
418 common mq_timedsend_time64 sys_mq_timedsend
419 common mq_timedreceive_time64 sys_mq_timedreceive
420 common semtimedop_time64 sys_semtimedop
421 common rt_sigtimedwait_time64 sys_rt_sigtimedwait
422 common futex_time64 sys_futex
423 common sched_rr_get_interval_time64 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 common clone3 __sys_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
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
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