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Message-ID: <202508062230.puMRaDdE-lkp@intel.com>
Date: Wed, 6 Aug 2025 22:39:48 +0800
From: kernel test robot <lkp@...el.com>
To: Steven Rostedt <rostedt@...dmis.org>, linux-kernel@...r.kernel.org,
linux-trace-kernel@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, Masami Hiramatsu <mhiramat@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Linux Memory Management List <linux-mm@...ck.org>,
Peter Zijlstra <peterz@...radead.org>,
Namhyung Kim <namhyung@...nel.org>,
Takaya Saeki <takayas@...gle.com>, Tom Zanussi <zanussi@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Ian Rogers <irogers@...gle.com>, aahringo@...hat.com,
Douglas Raillard <douglas.raillard@....com>
Subject: Re: [PATCH 3/7] tracing: Have syscall trace events read user space
string
Hi Steven,
kernel test robot noticed the following build errors:
[auto build test ERROR on trace/for-next]
[also build test ERROR on linus/master v6.16 next-20250806]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Steven-Rostedt/tracing-Replace-syscall-RCU-pointer-assignment-with-READ-WRITE_ONCE/20250806-122312
base: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next
patch link: https://lore.kernel.org/r/20250805193235.080757106%40kernel.org
patch subject: [PATCH 3/7] tracing: Have syscall trace events read user space string
config: parisc-randconfig-r071-20250806 (https://download.01.org/0day-ci/archive/20250806/202508062230.puMRaDdE-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 11.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250806/202508062230.puMRaDdE-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508062230.puMRaDdE-lkp@intel.com/
All errors (new ones prefixed by >>):
kernel/trace/trace_syscalls.c: In function 'check_faultable_syscall':
>> kernel/trace/trace_syscalls.c:886:14: error: '__NR_newfstatat' undeclared (first use in this function); did you mean 'sys_newfstatat'?
886 | case __NR_newfstatat:
| ^~~~~~~~~~~~~~~
| sys_newfstatat
kernel/trace/trace_syscalls.c:886:14: note: each undeclared identifier is reported only once for each function it appears in
vim +886 kernel/trace/trace_syscalls.c
802
803 /*
804 * For system calls that reference user space memory that can
805 * be recorded into the event, set the system call meta data's user_mask
806 * to the "args" index that points to the user space memory to retrieve.
807 */
808 static void check_faultable_syscall(struct trace_event_call *call, int nr)
809 {
810 struct syscall_metadata *sys_data = call->data;
811
812 /* Only work on entry */
813 if (sys_data->enter_event != call)
814 return;
815
816 switch (nr) {
817 /* user arg at position 0 */
818 case __NR_access:
819 case __NR_acct:
820 case __NR_add_key: /* Just _type. TODO add _description */
821 case __NR_chdir:
822 case __NR_chown:
823 case __NR_chmod:
824 case __NR_chroot:
825 case __NR_creat:
826 case __NR_delete_module:
827 case __NR_execve:
828 case __NR_fsopen:
829 case __NR_getxattr: /* Just pathname, TODO add name */
830 case __NR_lchown:
831 case __NR_lgetxattr: /* Just pathname, TODO add name */
832 case __NR_lremovexattr: /* Just pathname, TODO add name */
833 case __NR_link: /* Just oldname. TODO add newname */
834 case __NR_listxattr: /* Just pathname, TODO add list */
835 case __NR_llistxattr: /* Just pathname, TODO add list */
836 case __NR_lsetxattr: /* Just pathname, TODO add list */
837 case __NR_open:
838 case __NR_memfd_create:
839 case __NR_mount: /* Just dev_name, TODO add dir_name and type */
840 case __NR_mkdir:
841 case __NR_mknod:
842 case __NR_mq_open:
843 case __NR_mq_unlink:
844 case __NR_pivot_root: /* Just new_root, TODO add old_root */
845 case __NR_readlink:
846 case __NR_removexattr: /* Just pathname, TODO add name */
847 case __NR_rename: /* Just oldname. TODO add newname */
848 case __NR_request_key: /* Just _type. TODO add _description */
849 case __NR_rmdir:
850 case __NR_setxattr: /* Just pathname, TODO add list */
851 case __NR_shmdt:
852 case __NR_statfs:
853 case __NR_swapon:
854 case __NR_swapoff:
855 case __NR_symlink: /* Just oldname. TODO add newname */
856 case __NR_truncate:
857 case __NR_unlink:
858 case __NR_umount2:
859 case __NR_utime:
860 case __NR_utimes:
861 sys_data->user_mask = BIT(0);
862 break;
863 /* user arg at position 1 */
864 case __NR_execveat:
865 case __NR_faccessat:
866 case __NR_faccessat2:
867 case __NR_finit_module:
868 case __NR_fchmodat:
869 case __NR_fchmodat2:
870 case __NR_fchownat:
871 case __NR_fgetxattr:
872 case __NR_flistxattr:
873 case __NR_fsetxattr:
874 case __NR_fspick:
875 case __NR_fremovexattr:
876 case __NR_futimesat:
877 case __NR_getxattrat: /* Just pathname, TODO add name */
878 case __NR_inotify_add_watch:
879 case __NR_linkat: /* Just oldname. TODO add newname */
880 case __NR_listxattrat: /* Just pathname, TODO add list */
881 case __NR_mkdirat:
882 case __NR_mknodat:
883 case __NR_mount_setattr:
884 case __NR_move_mount: /* Just from_pathname, TODO add to_pathname */
885 case __NR_name_to_handle_at:
> 886 case __NR_newfstatat:
887 case __NR_openat:
888 case __NR_openat2:
889 case __NR_open_tree:
890 case __NR_open_tree_attr:
891 case __NR_readlinkat:
892 case __NR_renameat: /* Just oldname. TODO add newname */
893 case __NR_renameat2: /* Just oldname. TODO add newname */
894 case __NR_removexattrat: /* Just pathname, TODO add name */
895 case __NR_quotactl:
896 case __NR_setxattrat: /* Just pathname, TODO add list */
897 case __NR_syslog:
898 case __NR_symlinkat: /* Just oldname. TODO add newname */
899 case __NR_statx:
900 case __NR_unlinkat:
901 case __NR_utimensat:
902 sys_data->user_mask = BIT(1);
903 break;
904 /* user arg at position 2 */
905 case __NR_init_module:
906 case __NR_fsconfig:
907 sys_data->user_mask = BIT(2);
908 break;
909 /* user arg at position 4 */
910 case __NR_fanotify_mark:
911 sys_data->user_mask = BIT(4);
912 break;
913 default:
914 sys_data->user_mask = 0;
915 }
916 }
917
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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