tree: https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git lam head: 01819ca3dcb30fc9114025c8c5da8bcee0cabcee commit: bb9d0488e7c6bfff85581168d4f49f48cd11ac36 [5/18] x86/uaccess: Provide untagged_addr() and remove tags before address check config: i386-randconfig-s001 compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-39-gce1a6720-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git/commit/?id=bb9d0488e7c6bfff85581168d4f49f48cd11ac36 git remote add kas https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git git fetch --no-tags kas lam git checkout bb9d0488e7c6bfff85581168d4f49f48cd11ac36 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot sparse warnings: (new ones prefixed by >>) kernel/signal.c: note: in included file (through arch/x86/include/uapi/asm/signal.h, arch/x86/include/asm/signal.h, include/uapi/linux/signal.h, ...): include/uapi/asm-generic/signal-defs.h:83:29: sparse: sparse: multiple address spaces given kernel/signal.c:195:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:195:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:195:31: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:198:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:198:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:198:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:480:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:480:9: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:480:9: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:484:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:484:34: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:484:34: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:517:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:517:9: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:517:9: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:520:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:520:36: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:520:36: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:542:53: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct k_sigaction *ka @@ got struct k_sigaction [noderef] __rcu * @@ kernel/signal.c:542:53: sparse: expected struct k_sigaction *ka kernel/signal.c:542:53: sparse: got struct k_sigaction [noderef] __rcu * include/uapi/asm-generic/signal-defs.h:83:29: sparse: sparse: multiple address spaces given kernel/signal.c:698:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:698:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:698:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:700:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:700:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:700:31: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:765:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct lockdep_map const *lock @@ got struct lockdep_map [noderef] __rcu * @@ kernel/signal.c:765:9: sparse: expected struct lockdep_map const *lock kernel/signal.c:765:9: sparse: got struct lockdep_map [noderef] __rcu * kernel/signal.c:890:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct lockdep_map const *lock @@ got struct lockdep_map [noderef] __rcu * @@ kernel/signal.c:890:9: sparse: expected struct lockdep_map const *lock kernel/signal.c:890:9: sparse: got struct lockdep_map [noderef] __rcu * kernel/signal.c:1087:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct lockdep_map const *lock @@ got struct lockdep_map [noderef] __rcu * @@ kernel/signal.c:1087:9: sparse: expected struct lockdep_map const *lock kernel/signal.c:1087:9: sparse: got struct lockdep_map [noderef] __rcu * >> kernel/signal.c:1268:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned char [noderef] __user *__ptr_clean @@ got unsigned char * @@ kernel/signal.c:1268:29: sparse: expected unsigned char [noderef] __user *__ptr_clean kernel/signal.c:1268:29: sparse: got unsigned char * kernel/signal.c:1329:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:1329:9: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:1329:9: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:1330:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct k_sigaction *action @@ got struct k_sigaction [noderef] __rcu * @@ kernel/signal.c:1330:16: sparse: expected struct k_sigaction *action kernel/signal.c:1330:16: sparse: got struct k_sigaction [noderef] __rcu * kernel/signal.c:1350:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:1350:34: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:1350:34: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:1939:36: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:1939:36: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:1939:36: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2049:44: sparse: sparse: cast removes address space '__rcu' of expression kernel/signal.c:2068:65: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2068:65: sparse: expected struct task_struct *tsk kernel/signal.c:2068:65: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2069:40: sparse: sparse: cast removes address space '__rcu' of expression kernel/signal.c:2087:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sighand_struct *psig @@ got struct sighand_struct [noderef] __rcu *[noderef] __rcu sighand @@ kernel/signal.c:2087:14: sparse: expected struct sighand_struct *psig kernel/signal.c:2087:14: sparse: got struct sighand_struct [noderef] __rcu *[noderef] __rcu sighand kernel/signal.c:2116:53: sparse: sparse: incorrect type in argument 3 (different address spaces) @@ expected struct task_struct *t @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2116:53: sparse: expected struct task_struct *t kernel/signal.c:2116:53: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2117:34: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2117:34: sparse: expected struct task_struct *parent kernel/signal.c:2117:34: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2146:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2146:24: sparse: expected struct task_struct *parent kernel/signal.c:2146:24: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2149:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu *real_parent @@ kernel/signal.c:2149:24: sparse: expected struct task_struct *parent kernel/signal.c:2149:24: sparse: got struct task_struct [noderef] __rcu *real_parent kernel/signal.c:2182:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sighand_struct *sighand @@ got struct sighand_struct [noderef] __rcu *sighand @@ kernel/signal.c:2182:17: sparse: expected struct sighand_struct *sighand kernel/signal.c:2182:17: sparse: got struct sighand_struct [noderef] __rcu *sighand kernel/signal.c:2222:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2222:41: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2222:41: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2224:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2224:39: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2224:39: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2281:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2281:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2281:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2316:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2316:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2316:31: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2356:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2356:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2356:31: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2358:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2358:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2358:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2458:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2458:41: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2458:41: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2542:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2542:41: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2542:41: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2554:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2554:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2554:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2589:52: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *parent @@ kernel/signal.c:2589:52: sparse: expected struct task_struct *tsk kernel/signal.c:2589:52: sparse: got struct task_struct [noderef] __rcu *parent kernel/signal.c:2591:49: sparse: sparse: cast removes address space '__rcu' of expression kernel/signal.c:2629:49: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sighand_struct *sighand @@ got struct sighand_struct [noderef] __rcu *sighand @@ kernel/signal.c:2629:49: sparse: expected struct sighand_struct *sighand kernel/signal.c:2629:49: sparse: got struct sighand_struct [noderef] __rcu *sighand kernel/signal.c:2958:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2958:27: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2958:27: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:2978:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:2978:29: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:2978:29: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3045:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3045:27: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3045:27: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3047:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3047:29: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3047:29: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3198:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3198:31: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3198:31: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3201:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3201:33: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3201:33: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3590:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3590:27: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3590:27: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3602:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3602:37: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3602:37: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3607:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3607:35: sparse: expected struct spinlock [usertype] *lock kernel/signal.c:3607:35: sparse: got struct spinlock [noderef] __rcu * kernel/signal.c:3612:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/signal.c:3612:29: sparse: expected struct spinlock [usertype] *lock vim +1268 kernel/signal.c 7978b567d31555 Sukadev Bhattiprolu 2009-04-02 1255 4aaefee589f97b Al Viro 2012-11-05 1256 static void print_fatal_signal(int signr) 45807a1df9f51d Ingo Molnar 2007-07-15 1257 { 4aaefee589f97b Al Viro 2012-11-05 1258 struct pt_regs *regs = signal_pt_regs(); 747800efbe8b98 Wang Xiaoqiang 2016-05-23 1259 pr_info("potentially unexpected fatal signal %d.\n", signr); 45807a1df9f51d Ingo Molnar 2007-07-15 1260 ca5cd877ae699e Al Viro 2007-10-29 1261 #if defined(__i386__) && !defined(__arch_um__) 747800efbe8b98 Wang Xiaoqiang 2016-05-23 1262 pr_info("code at %08lx: ", regs->ip); 45807a1df9f51d Ingo Molnar 2007-07-15 1263 { 45807a1df9f51d Ingo Molnar 2007-07-15 1264 int i; 45807a1df9f51d Ingo Molnar 2007-07-15 1265 for (i = 0; i < 16; i++) { 45807a1df9f51d Ingo Molnar 2007-07-15 1266 unsigned char insn; 45807a1df9f51d Ingo Molnar 2007-07-15 1267 b45c6e76bc2c72 Andi Kleen 2010-01-08 @1268 if (get_user(insn, (unsigned char *)(regs->ip + i))) b45c6e76bc2c72 Andi Kleen 2010-01-08 1269 break; 747800efbe8b98 Wang Xiaoqiang 2016-05-23 1270 pr_cont("%02x ", insn); 45807a1df9f51d Ingo Molnar 2007-07-15 1271 } 45807a1df9f51d Ingo Molnar 2007-07-15 1272 } 747800efbe8b98 Wang Xiaoqiang 2016-05-23 1273 pr_cont("\n"); 45807a1df9f51d Ingo Molnar 2007-07-15 1274 #endif 3a9f84d354ce1e Ed Swierk 2009-01-26 1275 preempt_disable(); 45807a1df9f51d Ingo Molnar 2007-07-15 1276 show_regs(regs); 3a9f84d354ce1e Ed Swierk 2009-01-26 1277 preempt_enable(); 45807a1df9f51d Ingo Molnar 2007-07-15 1278 } 45807a1df9f51d Ingo Molnar 2007-07-15 1279 :::::: The code at line 1268 was first introduced by commit :::::: b45c6e76bc2c72f6426c14bed64fdcbc9bf37cb0 kernel/signal.c: fix kernel information leak with print-fatal-signals=1 :::::: TO: Andi Kleen :::::: CC: Linus Torvalds -- 0-DAY CI Kernel Test Service https://01.org/lkp