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linux/arch/parisc/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 parisc
#
# The format is:
# <number> <abi> <name> <entry point> <compat entry point>
#
# The <abi> can be common, 64, or 32 for this file.
#
0 common restart_syscall sys_restart_syscall
1 common exit sys_exit
2 common fork sys_fork_wrapper
3 common read sys_read
4 common write sys_write
5 common open sys_open compat_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 compat_sys_execve
12 common chdir sys_chdir
13 32 time sys_time32
13 64 time sys_time
14 common mknod sys_mknod
15 common chmod sys_chmod
16 common lchown sys_lchown
17 common socket sys_socket
18 common stat sys_newstat compat_sys_newstat
19 common lseek sys_lseek compat_sys_lseek
20 common getpid sys_getpid
21 common mount sys_mount
22 common bind sys_bind
23 common setuid sys_setuid
24 common getuid sys_getuid
25 32 stime sys_stime32
25 64 stime sys_stime
26 common ptrace sys_ptrace compat_sys_ptrace
27 common alarm sys_alarm
28 common fstat sys_newfstat compat_sys_newfstat
29 common pause sys_pause
30 32 utime sys_utime32
30 64 utime sys_utime
31 common connect sys_connect
32 common listen sys_listen
33 common access sys_access
34 common nice sys_nice
35 common accept sys_accept
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 compat_sys_times
44 common getsockname sys_getsockname
45 common brk sys_brk
46 common setgid sys_setgid
47 common getgid sys_getgid
48 common signal sys_signal
49 common geteuid sys_geteuid
50 common getegid sys_getegid
51 common acct sys_acct
52 common umount2 sys_umount
53 common getpeername sys_getpeername
54 common ioctl sys_ioctl compat_sys_ioctl
55 common fcntl sys_fcntl compat_sys_fcntl
56 common socketpair sys_socketpair
57 common setpgid sys_setpgid
58 common send sys_send
59 common uname sys_newuname
60 common umask sys_umask
61 common chroot sys_chroot
62 common ustat sys_ustat compat_sys_ustat
63 common dup2 sys_dup2
64 common getppid sys_getppid
65 common getpgrp sys_getpgrp
66 common setsid sys_setsid
67 common pivot_root sys_pivot_root
68 common sgetmask sys_sgetmask sys32_unimplemented
69 common ssetmask sys_ssetmask sys32_unimplemented
70 common setreuid sys_setreuid
71 common setregid sys_setregid
72 common mincore sys_mincore
73 common sigpending sys_sigpending compat_sys_sigpending
74 common sethostname sys_sethostname
75 common setrlimit sys_setrlimit compat_sys_setrlimit
76 common getrlimit sys_getrlimit compat_sys_getrlimit
77 common getrusage sys_getrusage compat_sys_getrusage
78 common gettimeofday sys_gettimeofday compat_sys_gettimeofday
79 common settimeofday sys_settimeofday compat_sys_settimeofday
80 common getgroups sys_getgroups
81 common setgroups sys_setgroups
82 common sendto sys_sendto
83 common symlink sys_symlink
84 common lstat sys_newlstat compat_sys_newlstat
85 common readlink sys_readlink
86 common uselib sys_ni_syscall
87 common swapon sys_swapon
88 common reboot sys_reboot
89 common mmap2 sys_mmap2
90 common mmap sys_mmap
91 common munmap sys_munmap
92 common truncate sys_truncate compat_sys_truncate
93 common ftruncate sys_ftruncate compat_sys_ftruncate
94 common fchmod sys_fchmod
95 common fchown sys_fchown
96 common getpriority sys_getpriority
97 common setpriority sys_setpriority
98 common recv sys_recv
99 common statfs sys_statfs compat_sys_statfs
100 common fstatfs sys_fstatfs compat_sys_fstatfs
101 common stat64 sys_stat64
# 102 was socketcall
103 common syslog sys_syslog
104 common setitimer sys_setitimer compat_sys_setitimer
105 common getitimer sys_getitimer compat_sys_getitimer
106 common capget sys_capget
107 common capset sys_capset
108 32 pread64 parisc_pread64
108 64 pread64 sys_pread64
109 32 pwrite64 parisc_pwrite64
109 64 pwrite64 sys_pwrite64
110 common getcwd sys_getcwd
111 common vhangup sys_vhangup
112 common fstat64 sys_fstat64
113 common vfork sys_vfork_wrapper
114 common wait4 sys_wait4 compat_sys_wait4
115 common swapoff sys_swapoff
116 common sysinfo sys_sysinfo compat_sys_sysinfo
117 common shutdown sys_shutdown
118 common fsync sys_fsync
119 common madvise parisc_madvise
120 common clone sys_clone_wrapper
121 common setdomainname sys_setdomainname
122 common sendfile sys_sendfile compat_sys_sendfile
123 common recvfrom sys_recvfrom
124 32 adjtimex sys_adjtimex_time32
124 64 adjtimex sys_adjtimex
125 common mprotect sys_mprotect
126 common sigprocmask sys_sigprocmask compat_sys_sigprocmask
# 127 was create_module
128 common init_module sys_init_module
129 common delete_module sys_delete_module
# 130 was get_kernel_syms
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 32 personality parisc_personality
136 64 personality sys_personality
# 137 was afs_syscall
138 common setfsuid sys_setfsuid
139 common setfsgid sys_setfsgid
140 common _llseek sys_llseek
141 common getdents sys_getdents compat_sys_getdents
142 common _newselect sys_select compat_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 32 sched_rr_get_interval sys_sched_rr_get_interval_time32
161 64 sched_rr_get_interval sys_sched_rr_get_interval
162 32 nanosleep sys_nanosleep_time32
162 64 nanosleep sys_nanosleep
163 common mremap sys_mremap
164 common setresuid sys_setresuid
165 common getresuid sys_getresuid
166 common sigaltstack sys_sigaltstack compat_sys_sigaltstack
# 167 was query_module
168 common poll sys_poll
# 169 was nfsservctl
170 common setresgid sys_setresgid
171 common getresgid sys_getresgid
172 common prctl sys_prctl
173 common rt_sigreturn sys_rt_sigreturn_wrapper
174 common rt_sigaction sys_rt_sigaction compat_sys_rt_sigaction
175 common rt_sigprocmask sys_rt_sigprocmask compat_sys_rt_sigprocmask
176 common rt_sigpending sys_rt_sigpending compat_sys_rt_sigpending
177 32 rt_sigtimedwait sys_rt_sigtimedwait_time32 compat_sys_rt_sigtimedwait_time32
177 64 rt_sigtimedwait sys_rt_sigtimedwait
178 common rt_sigqueueinfo sys_rt_sigqueueinfo compat_sys_rt_sigqueueinfo
179 common rt_sigsuspend sys_rt_sigsuspend compat_sys_rt_sigsuspend
180 common chown sys_chown
181 common setsockopt sys_setsockopt sys_setsockopt
182 common getsockopt sys_getsockopt sys_getsockopt
183 common sendmsg sys_sendmsg compat_sys_sendmsg
184 common recvmsg sys_recvmsg compat_sys_recvmsg
185 common semop sys_semop
186 common semget sys_semget
187 common semctl sys_semctl compat_sys_semctl
188 common msgsnd sys_msgsnd compat_sys_msgsnd
189 common msgrcv sys_msgrcv compat_sys_msgrcv
190 common msgget sys_msgget
191 common msgctl sys_msgctl compat_sys_msgctl
192 common shmat sys_shmat compat_sys_shmat
193 common shmdt sys_shmdt
194 common shmget sys_shmget
195 common shmctl sys_shmctl compat_sys_shmctl
# 196 was getpmsg
# 197 was putpmsg
198 common lstat64 sys_lstat64
199 32 truncate64 parisc_truncate64
199 64 truncate64 sys_truncate64
200 32 ftruncate64 parisc_ftruncate64
200 64 ftruncate64 sys_ftruncate64
201 common getdents64 sys_getdents64
202 common fcntl64 sys_fcntl64 compat_sys_fcntl64
# 203 was attrctl
# 204 was acl_get
# 205 was acl_set
206 common gettid sys_gettid
207 32 readahead parisc_readahead
207 64 readahead sys_readahead
208 common tkill sys_tkill
209 common sendfile64 sys_sendfile64 compat_sys_sendfile64
210 32 futex sys_futex_time32
210 64 futex sys_futex
211 common sched_setaffinity sys_sched_setaffinity compat_sys_sched_setaffinity
212 common sched_getaffinity sys_sched_getaffinity compat_sys_sched_getaffinity
# 213 was set_thread_area
# 214 was get_thread_area
215 common io_setup sys_io_setup compat_sys_io_setup
216 common io_destroy sys_io_destroy
217 32 io_getevents sys_io_getevents_time32
217 64 io_getevents sys_io_getevents
218 common io_submit sys_io_submit compat_sys_io_submit
219 common io_cancel sys_io_cancel
# 220 was alloc_hugepages
# 221 was free_hugepages
222 common exit_group sys_exit_group
223 common lookup_dcookie sys_ni_syscall
224 common epoll_create sys_epoll_create
225 common epoll_ctl sys_epoll_ctl
226 common epoll_wait sys_epoll_wait
227 common remap_file_pages sys_remap_file_pages
228 32 semtimedop sys_semtimedop_time32
228 64 semtimedop sys_semtimedop
229 common mq_open sys_mq_open compat_sys_mq_open
230 common mq_unlink sys_mq_unlink
231 32 mq_timedsend sys_mq_timedsend_time32
231 64 mq_timedsend sys_mq_timedsend
232 32 mq_timedreceive sys_mq_timedreceive_time32
232 64 mq_timedreceive sys_mq_timedreceive
233 common mq_notify sys_mq_notify compat_sys_mq_notify
234 common mq_getsetattr sys_mq_getsetattr compat_sys_mq_getsetattr
235 common waitid sys_waitid compat_sys_waitid
236 32 fadvise64_64 parisc_fadvise64_64
236 64 fadvise64_64 sys_fadvise64_64
237 common set_tid_address sys_set_tid_address
238 common setxattr sys_setxattr
239 common lsetxattr sys_lsetxattr
240 common fsetxattr sys_fsetxattr
241 common getxattr sys_getxattr
242 common lgetxattr sys_lgetxattr
243 common fgetxattr sys_fgetxattr
244 common listxattr sys_listxattr
245 common llistxattr sys_llistxattr
246 common flistxattr sys_flistxattr
247 common removexattr sys_removexattr
248 common lremovexattr sys_lremovexattr
249 common fremovexattr sys_fremovexattr
250 common timer_create sys_timer_create compat_sys_timer_create
251 32 timer_settime sys_timer_settime32
251 64 timer_settime sys_timer_settime
252 32 timer_gettime sys_timer_gettime32
252 64 timer_gettime sys_timer_gettime
253 common timer_getoverrun sys_timer_getoverrun
254 common timer_delete sys_timer_delete
255 32 clock_settime sys_clock_settime32
255 64 clock_settime sys_clock_settime
256 32 clock_gettime sys_clock_gettime32
256 64 clock_gettime sys_clock_gettime
257 32 clock_getres sys_clock_getres_time32
257 64 clock_getres sys_clock_getres
258 32 clock_nanosleep sys_clock_nanosleep_time32
258 64 clock_nanosleep sys_clock_nanosleep
259 common tgkill sys_tgkill
260 common mbind sys_mbind
261 common get_mempolicy sys_get_mempolicy
262 common set_mempolicy sys_set_mempolicy
# 263 was vserver
264 common add_key sys_add_key
265 common request_key sys_request_key
266 common keyctl sys_keyctl compat_sys_keyctl
267 common ioprio_set sys_ioprio_set
268 common ioprio_get sys_ioprio_get
269 common inotify_init sys_inotify_init
270 common inotify_add_watch sys_inotify_add_watch
271 common inotify_rm_watch sys_inotify_rm_watch
272 common migrate_pages sys_migrate_pages
273 32 pselect6 sys_pselect6_time32 compat_sys_pselect6_time32
273 64 pselect6 sys_pselect6
274 32 ppoll sys_ppoll_time32 compat_sys_ppoll_time32
274 64 ppoll sys_ppoll
275 common openat sys_openat compat_sys_openat
276 common mkdirat sys_mkdirat
277 common mknodat sys_mknodat
278 common fchownat sys_fchownat
279 32 futimesat sys_futimesat_time32
279 64 futimesat sys_futimesat
280 common fstatat64 sys_fstatat64
281 common unlinkat sys_unlinkat
282 common renameat sys_renameat
283 common linkat sys_linkat
284 common symlinkat sys_symlinkat
285 common readlinkat sys_readlinkat
286 common fchmodat sys_fchmodat
287 common faccessat sys_faccessat
288 common unshare sys_unshare
289 common set_robust_list sys_set_robust_list compat_sys_set_robust_list
290 common get_robust_list sys_get_robust_list compat_sys_get_robust_list
291 common splice sys_splice
292 32 sync_file_range parisc_sync_file_range
292 64 sync_file_range sys_sync_file_range
293 common tee sys_tee
294 common vmsplice sys_vmsplice
295 common move_pages sys_move_pages
296 common getcpu sys_getcpu
297 common epoll_pwait sys_epoll_pwait compat_sys_epoll_pwait
298 common statfs64 sys_statfs64 compat_sys_statfs64
299 common fstatfs64 sys_fstatfs64 compat_sys_fstatfs64
300 common kexec_load sys_kexec_load compat_sys_kexec_load
301 32 utimensat sys_utimensat_time32
301 64 utimensat sys_utimensat
302 common signalfd sys_signalfd compat_sys_signalfd
# 303 was timerfd
304 common eventfd sys_eventfd
305 32 fallocate parisc_fallocate
305 64 fallocate sys_fallocate
306 common timerfd_create parisc_timerfd_create
307 32 timerfd_settime sys_timerfd_settime32
307 64 timerfd_settime sys_timerfd_settime
308 32 timerfd_gettime sys_timerfd_gettime32
308 64 timerfd_gettime sys_timerfd_gettime
309 common signalfd4 parisc_signalfd4 parisc_compat_signalfd4
310 common eventfd2 parisc_eventfd2
311 common epoll_create1 sys_epoll_create1
312 common dup3 sys_dup3
313 common pipe2 parisc_pipe2
314 common inotify_init1 parisc_inotify_init1
315 common preadv sys_preadv compat_sys_preadv
316 common pwritev sys_pwritev compat_sys_pwritev
317 common rt_tgsigqueueinfo sys_rt_tgsigqueueinfo compat_sys_rt_tgsigqueueinfo
318 common perf_event_open sys_perf_event_open
319 32 recvmmsg sys_recvmmsg_time32 compat_sys_recvmmsg_time32
319 64 recvmmsg sys_recvmmsg
320 common accept4 sys_accept4
321 common prlimit64 sys_prlimit64
322 common fanotify_init sys_fanotify_init
323 common fanotify_mark sys_fanotify_mark sys32_fanotify_mark
324 32 clock_adjtime sys_clock_adjtime32
324 64 clock_adjtime sys_clock_adjtime
325 common name_to_handle_at sys_name_to_handle_at
326 common open_by_handle_at sys_open_by_handle_at compat_sys_open_by_handle_at
327 common syncfs sys_syncfs
328 common setns sys_setns
329 common sendmmsg sys_sendmmsg compat_sys_sendmmsg
330 common process_vm_readv sys_process_vm_readv
331 common process_vm_writev sys_process_vm_writev
332 common kcmp sys_kcmp
333 common finit_module sys_finit_module
334 common sched_setattr sys_sched_setattr
335 common sched_getattr sys_sched_getattr
336 32 utimes sys_utimes_time32
336 64 utimes sys_utimes
337 common renameat2 sys_renameat2
338 common seccomp sys_seccomp
339 common getrandom sys_getrandom
340 common memfd_create sys_memfd_create
341 common bpf sys_bpf
342 common execveat sys_execveat compat_sys_execveat
343 common membarrier sys_membarrier
344 common userfaultfd parisc_userfaultfd
345 common mlock2 sys_mlock2
346 common copy_file_range sys_copy_file_range
347 common preadv2 sys_preadv2 compat_sys_preadv2
348 common pwritev2 sys_pwritev2 compat_sys_pwritev2
349 common statx sys_statx
350 32 io_pgetevents sys_io_pgetevents_time32 compat_sys_io_pgetevents
350 64 io_pgetevents sys_io_pgetevents
351 common pkey_mprotect sys_pkey_mprotect
352 common pkey_alloc sys_pkey_alloc
353 common pkey_free sys_pkey_free
354 common rseq sys_rseq
355 common kexec_file_load sys_kexec_file_load sys_kexec_file_load
356 common cacheflush sys_cacheflush
# up to 402 is unassigned and reserved for arch specific syscalls
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 compat_sys_io_pgetevents_time64
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 common clone3 sys_clone3_wrapper
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
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