[kas:lam 5/13] kernel/signal.c:1267:29: sparse: sparse: incorrect type in assignment (different address spaces)

From: kernel test robot
Date: Mon Aug 22 2022 - 19:55:28 EST

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In reply to: kernel test robot: "[kas:lam 5/13] kernel/signal.c:1267:29: sparse: sparse: incorrect type in assignment (different address spaces)"
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git lam
head: 8836fbd6cd3120383a0bc63cd54c7dd55639ed49
commit: 2600a472582e2968633831d430c2a1366ad3e8b1 [5/13] x86/uaccess: Provide untagged_addr() and remove tags before address check
config: i386-randconfig-s003 (https://download.01.org/0day-ci/archive/20220823/202208230736.BKSkIiNH-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-5) 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=2600a472582e2968633831d430c2a1366ad3e8b1
git remote add kas https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git
git fetch --no-tags kas lam
git checkout 2600a472582e2968633831d430c2a1366ad3e8b1
# 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 <lkp@xxxxxxxxx>

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:1086:9: 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:1086:9: sparse: expected struct lockdep_map const *lock
kernel/signal.c:1086:9: sparse: got struct lockdep_map [noderef] __rcu *
>> kernel/signal.c:1267:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned char [noderef] __user *__ptr_clean @@ got unsigned char * @@
kernel/signal.c:1267:29: sparse: expected unsigned char [noderef] __user *__ptr_clean
kernel/signal.c:1267:29: sparse: got unsigned char *
kernel/signal.c:1328:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:1328:9: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:1328:9: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:1329:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct k_sigaction *action @@ got struct k_sigaction [noderef] __rcu * @@
kernel/signal.c:1329:16: sparse: expected struct k_sigaction *action
kernel/signal.c:1329:16: sparse: got struct k_sigaction [noderef] __rcu *
kernel/signal.c:1349:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:1349:34: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:1349:34: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:1938:36: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:1938:36: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:1938:36: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2048:44: sparse: sparse: cast removes address space '__rcu' of expression
kernel/signal.c:2067:65: 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:2067:65: sparse: expected struct task_struct *tsk
kernel/signal.c:2067:65: sparse: got struct task_struct [noderef] __rcu *parent
kernel/signal.c:2068:40: sparse: sparse: cast removes address space '__rcu' of expression
kernel/signal.c:2086:14: 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:2086:14: sparse: expected struct sighand_struct *psig
kernel/signal.c:2086:14: sparse: got struct sighand_struct [noderef] __rcu *[noderef] __rcu sighand
kernel/signal.c:2115:53: 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:2115:53: sparse: expected struct task_struct *t
kernel/signal.c:2115:53: sparse: got struct task_struct [noderef] __rcu *parent
kernel/signal.c:2116:34: 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:2116:34: sparse: expected struct task_struct *parent
kernel/signal.c:2116:34: sparse: got struct task_struct [noderef] __rcu *parent
kernel/signal.c:2145:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu *parent @@
kernel/signal.c:2145:24: sparse: expected struct task_struct *parent
kernel/signal.c:2145:24: sparse: got struct task_struct [noderef] __rcu *parent
kernel/signal.c:2148:24: 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:2148:24: sparse: expected struct task_struct *parent
kernel/signal.c:2148:24: sparse: got struct task_struct [noderef] __rcu *real_parent
kernel/signal.c:2181:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sighand_struct *sighand @@ got struct sighand_struct [noderef] __rcu *sighand @@
kernel/signal.c:2181:17: sparse: expected struct sighand_struct *sighand
kernel/signal.c:2181:17: sparse: got struct sighand_struct [noderef] __rcu *sighand
kernel/signal.c:2221:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2221:41: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2221:41: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2223:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2223:39: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2223:39: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2280:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2280:33: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2280:33: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2315:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2315:31: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2315:31: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2355:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2355:31: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2355:31: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2357:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2357:33: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2357:33: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2457:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2457:41: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2457:41: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2541:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2541:41: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2541:41: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2553:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2553:33: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2553:33: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2588:52: 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:2588:52: sparse: expected struct task_struct *tsk
kernel/signal.c:2588:52: sparse: got struct task_struct [noderef] __rcu *parent
kernel/signal.c:2590:49: sparse: sparse: cast removes address space '__rcu' of expression
kernel/signal.c:2628:49: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sighand_struct *sighand @@ got struct sighand_struct [noderef] __rcu *sighand @@
kernel/signal.c:2628:49: sparse: expected struct sighand_struct *sighand
kernel/signal.c:2628:49: sparse: got struct sighand_struct [noderef] __rcu *sighand
kernel/signal.c:2957:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2957:27: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2957:27: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2977:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2977:29: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2977:29: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3044:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3044:27: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3044:27: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3046:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3046:29: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3046:29: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3197:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3197:31: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3197:31: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3200:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3200:33: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3200:33: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3589:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3589:27: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3589:27: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3601:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3601:37: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3601:37: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3606:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3606:35: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3606:35: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3611:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3611:29: sparse: expected struct spinlock [usertype] *lock

vim +1267 kernel/signal.c

7978b567d31555f Sukadev Bhattiprolu 2009-04-02 1254
4aaefee589f97bb Al Viro 2012-11-05 1255 static void print_fatal_signal(int signr)
45807a1df9f51d2 Ingo Molnar 2007-07-15 1256 {
4aaefee589f97bb Al Viro 2012-11-05 1257 struct pt_regs *regs = signal_pt_regs();
747800efbe8b984 Wang Xiaoqiang 2016-05-23 1258 pr_info("potentially unexpected fatal signal %d.\n", signr);
45807a1df9f51d2 Ingo Molnar 2007-07-15 1259
ca5cd877ae699e7 Al Viro 2007-10-29 1260 #if defined(__i386__) && !defined(__arch_um__)
747800efbe8b984 Wang Xiaoqiang 2016-05-23 1261 pr_info("code at %08lx: ", regs->ip);
45807a1df9f51d2 Ingo Molnar 2007-07-15 1262 {
45807a1df9f51d2 Ingo Molnar 2007-07-15 1263 int i;
45807a1df9f51d2 Ingo Molnar 2007-07-15 1264 for (i = 0; i < 16; i++) {
45807a1df9f51d2 Ingo Molnar 2007-07-15 1265 unsigned char insn;
45807a1df9f51d2 Ingo Molnar 2007-07-15 1266
b45c6e76bc2c72f Andi Kleen 2010-01-08 @1267 if (get_user(insn, (unsigned char *)(regs->ip + i)))
b45c6e76bc2c72f Andi Kleen 2010-01-08 1268 break;
747800efbe8b984 Wang Xiaoqiang 2016-05-23 1269 pr_cont("%02x ", insn);
45807a1df9f51d2 Ingo Molnar 2007-07-15 1270 }
45807a1df9f51d2 Ingo Molnar 2007-07-15 1271 }
747800efbe8b984 Wang Xiaoqiang 2016-05-23 1272 pr_cont("\n");
45807a1df9f51d2 Ingo Molnar 2007-07-15 1273 #endif
3a9f84d354ce1e1 Ed Swierk 2009-01-26 1274 preempt_disable();
45807a1df9f51d2 Ingo Molnar 2007-07-15 1275 show_regs(regs);
3a9f84d354ce1e1 Ed Swierk 2009-01-26 1276 preempt_enable();
45807a1df9f51d2 Ingo Molnar 2007-07-15 1277 }
45807a1df9f51d2 Ingo Molnar 2007-07-15 1278

:::::: The code at line 1267 was first introduced by commit
:::::: b45c6e76bc2c72f6426c14bed64fdcbc9bf37cb0 kernel/signal.c: fix kernel information leak with print-fatal-signals=1

:::::: TO: Andi Kleen <andi@xxxxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

--
0-DAY CI Kernel Test Service
https://01.org/lkp

Next message: Nick Desaulniers: "Re: [PATCH v9 09/27] rust: add `compiler_builtins` crate"
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In reply to: kernel test robot: "[kas:lam 5/13] kernel/signal.c:1267:29: sparse: sparse: incorrect type in assignment (different address spaces)"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]