[jcmvbkbc-xtensa:xtensa-5.18-esp32 45/45] kernel/ptrace.c:1209:42: error: 'mm_context_t' has no member named 'exec_fdpic_loadmap'

From: kernel test robot
Date: Sat Jun 04 2022 - 09:56:50 EST

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tree: https://github.com/jcmvbkbc/linux-xtensa xtensa-5.18-esp32
head: 137adeae90088411fe27a1be624afd8336542302
commit: 137adeae90088411fe27a1be624afd8336542302 [45/45] WIP: xtensa: add FDPIC support
config: xtensa-allyesconfig (https://download.01.org/0day-ci/archive/20220604/202206042111.7TXeQiVP-lkp@xxxxxxxxx/config)
compiler: xtensa-linux-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/jcmvbkbc/linux-xtensa/commit/137adeae90088411fe27a1be624afd8336542302
git remote add jcmvbkbc-xtensa https://github.com/jcmvbkbc/linux-xtensa
git fetch --no-tags jcmvbkbc-xtensa xtensa-5.18-esp32
git checkout 137adeae90088411fe27a1be624afd8336542302
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=xtensa SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

kernel/ptrace.c: In function 'ptrace_request':
>> kernel/ptrace.c:1209:42: error: 'mm_context_t' has no member named 'exec_fdpic_loadmap'
1209 | tmp = mm->context.exec_fdpic_loadmap;
| ^
>> kernel/ptrace.c:1212:42: error: 'mm_context_t' has no member named 'interp_fdpic_loadmap'
1212 | tmp = mm->context.interp_fdpic_loadmap;
| ^
--
fs/binfmt_elf_fdpic.c: In function 'load_elf_fdpic_binary':
>> fs/binfmt_elf_fdpic.c:364:29: error: 'mm_context_t' has no member named 'exec_fdpic_loadmap'
364 | current->mm->context.exec_fdpic_loadmap = 0;
| ^
>> fs/binfmt_elf_fdpic.c:365:29: error: 'mm_context_t' has no member named 'interp_fdpic_loadmap'
365 | current->mm->context.interp_fdpic_loadmap = 0;
| ^
fs/binfmt_elf_fdpic.c: In function 'create_elf_fdpic_tables':
fs/binfmt_elf_fdpic.c:570:29: error: 'mm_context_t' has no member named 'exec_fdpic_loadmap'
570 | current->mm->context.exec_fdpic_loadmap = (unsigned long) sp;
| ^
fs/binfmt_elf_fdpic.c:583:37: error: 'mm_context_t' has no member named 'interp_fdpic_loadmap'
583 | current->mm->context.interp_fdpic_loadmap = (unsigned long) sp;
| ^
fs/binfmt_elf_fdpic.c: In function 'fill_elf_fdpic_header':
>> fs/binfmt_elf_fdpic.c:1252:24: error: 'ELF_FDPIC_CORE_EFLAGS' undeclared (first use in this function)
1252 | elf->e_flags = ELF_FDPIC_CORE_EFLAGS;
| ^~~~~~~~~~~~~~~~~~~~~
fs/binfmt_elf_fdpic.c:1252:24: note: each undeclared identifier is reported only once for each function it appears in
fs/binfmt_elf_fdpic.c: In function 'elf_dump_thread_status':
fs/binfmt_elf_fdpic.c:1393:59: error: 'mm_context_t' has no member named 'exec_fdpic_loadmap'
1393 | t->prstatus.pr_exec_fdpic_loadmap = p->mm->context.exec_fdpic_loadmap;
| ^
fs/binfmt_elf_fdpic.c:1394:61: error: 'mm_context_t' has no member named 'interp_fdpic_loadmap'
1394 | t->prstatus.pr_interp_fdpic_loadmap = p->mm->context.interp_fdpic_loadmap;
| ^

vim +1209 kernel/ptrace.c

2225a122ae26d5 Suresh Siddha 2010-02-11 1045
^1da177e4c3f41 Linus Torvalds 2005-04-16 1046 int ptrace_request(struct task_struct *child, long request,
4abf986960ecda Namhyung Kim 2010-10-27 1047 unsigned long addr, unsigned long data)
^1da177e4c3f41 Linus Torvalds 2005-04-16 1048 {
fca26f260c528e Tejun Heo 2011-06-14 1049 bool seized = child->ptrace & PT_SEIZED;
^1da177e4c3f41 Linus Torvalds 2005-04-16 1050 int ret = -EIO;
ae7795bc6187a1 Eric W. Biederman 2018-09-25 1051 kernel_siginfo_t siginfo, *si;
9fed81dc40f5a1 Namhyung Kim 2010-10-27 1052 void __user *datavp = (void __user *) data;
9fed81dc40f5a1 Namhyung Kim 2010-10-27 1053 unsigned long __user *datalp = datavp;
fca26f260c528e Tejun Heo 2011-06-14 1054 unsigned long flags;
^1da177e4c3f41 Linus Torvalds 2005-04-16 1055
^1da177e4c3f41 Linus Torvalds 2005-04-16 1056 switch (request) {
16c3e389e7a725 Roland McGrath 2008-01-30 1057 case PTRACE_PEEKTEXT:
16c3e389e7a725 Roland McGrath 2008-01-30 1058 case PTRACE_PEEKDATA:
16c3e389e7a725 Roland McGrath 2008-01-30 1059 return generic_ptrace_peekdata(child, addr, data);
16c3e389e7a725 Roland McGrath 2008-01-30 1060 case PTRACE_POKETEXT:
16c3e389e7a725 Roland McGrath 2008-01-30 1061 case PTRACE_POKEDATA:
16c3e389e7a725 Roland McGrath 2008-01-30 1062 return generic_ptrace_pokedata(child, addr, data);
16c3e389e7a725 Roland McGrath 2008-01-30 1063
^1da177e4c3f41 Linus Torvalds 2005-04-16 1064 #ifdef PTRACE_OLDSETOPTIONS
^1da177e4c3f41 Linus Torvalds 2005-04-16 1065 case PTRACE_OLDSETOPTIONS:
^1da177e4c3f41 Linus Torvalds 2005-04-16 1066 #endif
^1da177e4c3f41 Linus Torvalds 2005-04-16 1067 case PTRACE_SETOPTIONS:
^1da177e4c3f41 Linus Torvalds 2005-04-16 1068 ret = ptrace_setoptions(child, data);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1069 break;
^1da177e4c3f41 Linus Torvalds 2005-04-16 1070 case PTRACE_GETEVENTMSG:
9fed81dc40f5a1 Namhyung Kim 2010-10-27 1071 ret = put_user(child->ptrace_message, datalp);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1072 break;
e16b27816462de Roland McGrath 2008-04-20 1073
84c751bd4aebba Andrey Vagin 2013-04-30 1074 case PTRACE_PEEKSIGINFO:
84c751bd4aebba Andrey Vagin 2013-04-30 1075 ret = ptrace_peek_siginfo(child, addr, data);
84c751bd4aebba Andrey Vagin 2013-04-30 1076 break;
84c751bd4aebba Andrey Vagin 2013-04-30 1077
^1da177e4c3f41 Linus Torvalds 2005-04-16 1078 case PTRACE_GETSIGINFO:
e16b27816462de Roland McGrath 2008-04-20 1079 ret = ptrace_getsiginfo(child, &siginfo);
e16b27816462de Roland McGrath 2008-04-20 1080 if (!ret)
9fed81dc40f5a1 Namhyung Kim 2010-10-27 1081 ret = copy_siginfo_to_user(datavp, &siginfo);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1082 break;
e16b27816462de Roland McGrath 2008-04-20 1083
^1da177e4c3f41 Linus Torvalds 2005-04-16 1084 case PTRACE_SETSIGINFO:
4cd2e0e70af689 Eric W. Biederman 2018-04-18 1085 ret = copy_siginfo_from_user(&siginfo, datavp);
4cd2e0e70af689 Eric W. Biederman 2018-04-18 1086 if (!ret)
e16b27816462de Roland McGrath 2008-04-20 1087 ret = ptrace_setsiginfo(child, &siginfo);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1088 break;
e16b27816462de Roland McGrath 2008-04-20 1089
fcfc2aa0185f4a Andrei Vagin 2019-03-28 1090 case PTRACE_GETSIGMASK: {
fcfc2aa0185f4a Andrei Vagin 2019-03-28 1091 sigset_t *mask;
fcfc2aa0185f4a Andrei Vagin 2019-03-28 1092
29000caecbe87b Andrey Vagin 2013-07-03 1093 if (addr != sizeof(sigset_t)) {
29000caecbe87b Andrey Vagin 2013-07-03 1094 ret = -EINVAL;
29000caecbe87b Andrey Vagin 2013-07-03 1095 break;
29000caecbe87b Andrey Vagin 2013-07-03 1096 }
29000caecbe87b Andrey Vagin 2013-07-03 1097
fcfc2aa0185f4a Andrei Vagin 2019-03-28 1098 if (test_tsk_restore_sigmask(child))
fcfc2aa0185f4a Andrei Vagin 2019-03-28 1099 mask = &child->saved_sigmask;
fcfc2aa0185f4a Andrei Vagin 2019-03-28 1100 else
fcfc2aa0185f4a Andrei Vagin 2019-03-28 1101 mask = &child->blocked;
fcfc2aa0185f4a Andrei Vagin 2019-03-28 1102
fcfc2aa0185f4a Andrei Vagin 2019-03-28 1103 if (copy_to_user(datavp, mask, sizeof(sigset_t)))
29000caecbe87b Andrey Vagin 2013-07-03 1104 ret = -EFAULT;
29000caecbe87b Andrey Vagin 2013-07-03 1105 else
29000caecbe87b Andrey Vagin 2013-07-03 1106 ret = 0;
29000caecbe87b Andrey Vagin 2013-07-03 1107
29000caecbe87b Andrey Vagin 2013-07-03 1108 break;
fcfc2aa0185f4a Andrei Vagin 2019-03-28 1109 }
29000caecbe87b Andrey Vagin 2013-07-03 1110
29000caecbe87b Andrey Vagin 2013-07-03 1111 case PTRACE_SETSIGMASK: {
29000caecbe87b Andrey Vagin 2013-07-03 1112 sigset_t new_set;
29000caecbe87b Andrey Vagin 2013-07-03 1113
29000caecbe87b Andrey Vagin 2013-07-03 1114 if (addr != sizeof(sigset_t)) {
29000caecbe87b Andrey Vagin 2013-07-03 1115 ret = -EINVAL;
29000caecbe87b Andrey Vagin 2013-07-03 1116 break;
29000caecbe87b Andrey Vagin 2013-07-03 1117 }
29000caecbe87b Andrey Vagin 2013-07-03 1118
29000caecbe87b Andrey Vagin 2013-07-03 1119 if (copy_from_user(&new_set, datavp, sizeof(sigset_t))) {
29000caecbe87b Andrey Vagin 2013-07-03 1120 ret = -EFAULT;
29000caecbe87b Andrey Vagin 2013-07-03 1121 break;
29000caecbe87b Andrey Vagin 2013-07-03 1122 }
29000caecbe87b Andrey Vagin 2013-07-03 1123
29000caecbe87b Andrey Vagin 2013-07-03 1124 sigdelsetmask(&new_set, sigmask(SIGKILL)|sigmask(SIGSTOP));
29000caecbe87b Andrey Vagin 2013-07-03 1125
29000caecbe87b Andrey Vagin 2013-07-03 1126 /*
29000caecbe87b Andrey Vagin 2013-07-03 1127 * Every thread does recalc_sigpending() after resume, so
29000caecbe87b Andrey Vagin 2013-07-03 1128 * retarget_shared_pending() and recalc_sigpending() are not
29000caecbe87b Andrey Vagin 2013-07-03 1129 * called here.
29000caecbe87b Andrey Vagin 2013-07-03 1130 */
29000caecbe87b Andrey Vagin 2013-07-03 1131 spin_lock_irq(&child->sighand->siglock);
29000caecbe87b Andrey Vagin 2013-07-03 1132 child->blocked = new_set;
29000caecbe87b Andrey Vagin 2013-07-03 1133 spin_unlock_irq(&child->sighand->siglock);
29000caecbe87b Andrey Vagin 2013-07-03 1134
fcfc2aa0185f4a Andrei Vagin 2019-03-28 1135 clear_tsk_restore_sigmask(child);
fcfc2aa0185f4a Andrei Vagin 2019-03-28 1136
29000caecbe87b Andrey Vagin 2013-07-03 1137 ret = 0;
29000caecbe87b Andrey Vagin 2013-07-03 1138 break;
29000caecbe87b Andrey Vagin 2013-07-03 1139 }
29000caecbe87b Andrey Vagin 2013-07-03 1140
fca26f260c528e Tejun Heo 2011-06-14 1141 case PTRACE_INTERRUPT:
fca26f260c528e Tejun Heo 2011-06-14 1142 /*
fca26f260c528e Tejun Heo 2011-06-14 1143 * Stop tracee without any side-effect on signal or job
fca26f260c528e Tejun Heo 2011-06-14 1144 * control. At least one trap is guaranteed to happen
fca26f260c528e Tejun Heo 2011-06-14 1145 * after this request. If @child is already trapped, the
fca26f260c528e Tejun Heo 2011-06-14 1146 * current trap is not disturbed and another trap will
fca26f260c528e Tejun Heo 2011-06-14 1147 * happen after the current trap is ended with PTRACE_CONT.
fca26f260c528e Tejun Heo 2011-06-14 1148 *
fca26f260c528e Tejun Heo 2011-06-14 1149 * The actual trap might not be PTRACE_EVENT_STOP trap but
fca26f260c528e Tejun Heo 2011-06-14 1150 * the pending condition is cleared regardless.
fca26f260c528e Tejun Heo 2011-06-14 1151 */
fca26f260c528e Tejun Heo 2011-06-14 1152 if (unlikely(!seized || !lock_task_sighand(child, &flags)))
fca26f260c528e Tejun Heo 2011-06-14 1153 break;
fca26f260c528e Tejun Heo 2011-06-14 1154
544b2c91a9f14f Tejun Heo 2011-06-14 1155 /*
544b2c91a9f14f Tejun Heo 2011-06-14 1156 * INTERRUPT doesn't disturb existing trap sans one
544b2c91a9f14f Tejun Heo 2011-06-14 1157 * exception. If ptracer issued LISTEN for the current
544b2c91a9f14f Tejun Heo 2011-06-14 1158 * STOP, this INTERRUPT should clear LISTEN and re-trap
544b2c91a9f14f Tejun Heo 2011-06-14 1159 * tracee into STOP.
544b2c91a9f14f Tejun Heo 2011-06-14 1160 */
fca26f260c528e Tejun Heo 2011-06-14 1161 if (likely(task_set_jobctl_pending(child, JOBCTL_TRAP_STOP)))
910ffdb18a6408 Oleg Nesterov 2013-01-21 1162 ptrace_signal_wake_up(child, child->jobctl & JOBCTL_LISTENING);
544b2c91a9f14f Tejun Heo 2011-06-14 1163
544b2c91a9f14f Tejun Heo 2011-06-14 1164 unlock_task_sighand(child, &flags);
544b2c91a9f14f Tejun Heo 2011-06-14 1165 ret = 0;
544b2c91a9f14f Tejun Heo 2011-06-14 1166 break;
544b2c91a9f14f Tejun Heo 2011-06-14 1167
544b2c91a9f14f Tejun Heo 2011-06-14 1168 case PTRACE_LISTEN:
544b2c91a9f14f Tejun Heo 2011-06-14 1169 /*
544b2c91a9f14f Tejun Heo 2011-06-14 1170 * Listen for events. Tracee must be in STOP. It's not
544b2c91a9f14f Tejun Heo 2011-06-14 1171 * resumed per-se but is not considered to be in TRACED by
544b2c91a9f14f Tejun Heo 2011-06-14 1172 * wait(2) or ptrace(2). If an async event (e.g. group
544b2c91a9f14f Tejun Heo 2011-06-14 1173 * stop state change) happens, tracee will enter STOP trap
544b2c91a9f14f Tejun Heo 2011-06-14 1174 * again. Alternatively, ptracer can issue INTERRUPT to
544b2c91a9f14f Tejun Heo 2011-06-14 1175 * finish listening and re-trap tracee into STOP.
544b2c91a9f14f Tejun Heo 2011-06-14 1176 */
544b2c91a9f14f Tejun Heo 2011-06-14 1177 if (unlikely(!seized || !lock_task_sighand(child, &flags)))
544b2c91a9f14f Tejun Heo 2011-06-14 1178 break;
544b2c91a9f14f Tejun Heo 2011-06-14 1179
544b2c91a9f14f Tejun Heo 2011-06-14 1180 si = child->last_siginfo;
f9d81f61c84aca Oleg Nesterov 2011-09-25 1181 if (likely(si && (si->si_code >> 8) == PTRACE_EVENT_STOP)) {
544b2c91a9f14f Tejun Heo 2011-06-14 1182 child->jobctl |= JOBCTL_LISTENING;
544b2c91a9f14f Tejun Heo 2011-06-14 1183 /*
f9d81f61c84aca Oleg Nesterov 2011-09-25 1184 * If NOTIFY is set, it means event happened between
f9d81f61c84aca Oleg Nesterov 2011-09-25 1185 * start of this trap and now. Trigger re-trap.
544b2c91a9f14f Tejun Heo 2011-06-14 1186 */
544b2c91a9f14f Tejun Heo 2011-06-14 1187 if (child->jobctl & JOBCTL_TRAP_NOTIFY)
910ffdb18a6408 Oleg Nesterov 2013-01-21 1188 ptrace_signal_wake_up(child, true);
fca26f260c528e Tejun Heo 2011-06-14 1189 ret = 0;
f9d81f61c84aca Oleg Nesterov 2011-09-25 1190 }
f9d81f61c84aca Oleg Nesterov 2011-09-25 1191 unlock_task_sighand(child, &flags);
fca26f260c528e Tejun Heo 2011-06-14 1192 break;
fca26f260c528e Tejun Heo 2011-06-14 1193
1bcf548293aef1 Alexey Dobriyan 2007-10-16 1194 case PTRACE_DETACH: /* detach a process that was attached. */
1bcf548293aef1 Alexey Dobriyan 2007-10-16 1195 ret = ptrace_detach(child, data);
1bcf548293aef1 Alexey Dobriyan 2007-10-16 1196 break;
36df29d7994180 Roland McGrath 2008-01-30 1197
9c1a125921d146 Mike Frysinger 2010-05-26 1198 #ifdef CONFIG_BINFMT_ELF_FDPIC
9c1a125921d146 Mike Frysinger 2010-05-26 1199 case PTRACE_GETFDPIC: {
e0129ef91ed758 Oleg Nesterov 2010-05-26 1200 struct mm_struct *mm = get_task_mm(child);
9c1a125921d146 Mike Frysinger 2010-05-26 1201 unsigned long tmp = 0;
9c1a125921d146 Mike Frysinger 2010-05-26 1202
e0129ef91ed758 Oleg Nesterov 2010-05-26 1203 ret = -ESRCH;
e0129ef91ed758 Oleg Nesterov 2010-05-26 1204 if (!mm)
e0129ef91ed758 Oleg Nesterov 2010-05-26 1205 break;
e0129ef91ed758 Oleg Nesterov 2010-05-26 1206
9c1a125921d146 Mike Frysinger 2010-05-26 1207 switch (addr) {
9c1a125921d146 Mike Frysinger 2010-05-26 1208 case PTRACE_GETFDPIC_EXEC:
e0129ef91ed758 Oleg Nesterov 2010-05-26 @1209 tmp = mm->context.exec_fdpic_loadmap;
9c1a125921d146 Mike Frysinger 2010-05-26 1210 break;
9c1a125921d146 Mike Frysinger 2010-05-26 1211 case PTRACE_GETFDPIC_INTERP:
e0129ef91ed758 Oleg Nesterov 2010-05-26 @1212 tmp = mm->context.interp_fdpic_loadmap;
9c1a125921d146 Mike Frysinger 2010-05-26 1213 break;
9c1a125921d146 Mike Frysinger 2010-05-26 1214 default:
9c1a125921d146 Mike Frysinger 2010-05-26 1215 break;
9c1a125921d146 Mike Frysinger 2010-05-26 1216 }
e0129ef91ed758 Oleg Nesterov 2010-05-26 1217 mmput(mm);
9c1a125921d146 Mike Frysinger 2010-05-26 1218
9fed81dc40f5a1 Namhyung Kim 2010-10-27 1219 ret = put_user(tmp, datalp);
9c1a125921d146 Mike Frysinger 2010-05-26 1220 break;
9c1a125921d146 Mike Frysinger 2010-05-26 1221 }
9c1a125921d146 Mike Frysinger 2010-05-26 1222 #endif
9c1a125921d146 Mike Frysinger 2010-05-26 1223

:::::: The code at line 1209 was first introduced by commit
:::::: e0129ef91ed758c06b6557c36124acfb2e1c7305 ptrace: PTRACE_GETFDPIC: fix the unsafe usage of child->mm

:::::: TO: Oleg Nesterov <oleg@xxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

--
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