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Message-ID: <202601261147.DICzPW0P-lkp@intel.com>
Date: Mon, 26 Jan 2026 11:23:53 +0800
From: kernel test robot <lkp@...el.com>
To: Marco Elver <elver@...gle.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
x86@...nel.org, Peter Zijlstra <peterz@...radead.org>
Subject: [tip:locking/core 11/43] kernel/ptrace.c:380:9: sparse:
sparse: incorrect type in argument 1 (different address spaces)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core
head: ccf9e070116a81d29aae30db501d562c8efd1ed8
commit: f16a802d402d735a55731f8c94952b3bbb5ddfe8 [11/43] locking/rwlock, spinlock: Support Clang's context analysis
config: arc-randconfig-r112-20260126 (https://download.01.org/0day-ci/archive/20260126/202601261147.DICzPW0P-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 14.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260126/202601261147.DICzPW0P-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/202601261147.DICzPW0P-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
kernel/ptrace.c:55:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/ptrace.c:55:22: sparse: struct task_struct *
kernel/ptrace.c:55:22: sparse: struct task_struct [noderef] __rcu *
kernel/ptrace.c:74:23: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct [noderef] __rcu *parent @@ got struct task_struct *new_parent @@
kernel/ptrace.c:74:23: sparse: expected struct task_struct [noderef] __rcu *parent
kernel/ptrace.c:74:23: sparse: got struct task_struct *new_parent
kernel/ptrace.c:75:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct cred const [noderef] __rcu *ptracer_cred @@ got struct cred const * @@
kernel/ptrace.c:75:29: sparse: expected struct cred const [noderef] __rcu *ptracer_cred
kernel/ptrace.c:75:29: sparse: got struct cred const *
kernel/ptrace.c:129:18: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct cred const *old_cred @@ got struct cred const [noderef] __rcu *ptracer_cred @@
kernel/ptrace.c:129:18: sparse: expected struct cred const *old_cred
kernel/ptrace.c:129:18: sparse: got struct cred const [noderef] __rcu *ptracer_cred
kernel/ptrace.c:133:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/ptrace.c:133:25: sparse: expected struct spinlock [usertype] *lock
kernel/ptrace.c:133:25: sparse: got struct spinlock [noderef] __rcu *
kernel/ptrace.c:160:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/ptrace.c:160:27: sparse: expected struct spinlock [usertype] *lock
kernel/ptrace.c:160:27: sparse: got struct spinlock [noderef] __rcu *
kernel/ptrace.c:192:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/ptrace.c:192:28: sparse: expected struct spinlock [usertype] *lock
kernel/ptrace.c:192:28: sparse: got struct spinlock [noderef] __rcu *
kernel/ptrace.c:198:30: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/ptrace.c:198:30: sparse: expected struct spinlock [usertype] *lock
kernel/ptrace.c:198:30: sparse: got struct spinlock [noderef] __rcu *
kernel/ptrace.c:251:44: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/ptrace.c:251:44: sparse: struct task_struct [noderef] __rcu *
kernel/ptrace.c:251:44: sparse: struct task_struct *
kernel/ptrace.c:494:54: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu *parent @@
kernel/ptrace.c:494:54: sparse: expected struct task_struct *parent
kernel/ptrace.c:494:54: sparse: got struct task_struct [noderef] __rcu *parent
kernel/ptrace.c:502:53: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *new_parent @@ got struct task_struct [noderef] __rcu *real_parent @@
kernel/ptrace.c:502:53: sparse: expected struct task_struct *new_parent
kernel/ptrace.c:502:53: sparse: got struct task_struct [noderef] __rcu *real_parent
kernel/ptrace.c:550:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p1 @@ got struct task_struct [noderef] __rcu *real_parent @@
kernel/ptrace.c:550:41: sparse: expected struct task_struct *p1
kernel/ptrace.c:550:41: sparse: got struct task_struct [noderef] __rcu *real_parent
kernel/ptrace.c:552:50: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sighand_struct *sigh @@ got struct sighand_struct [noderef] __rcu *sighand @@
kernel/ptrace.c:552:50: sparse: expected struct sighand_struct *sigh
kernel/ptrace.c:552:50: sparse: got struct sighand_struct [noderef] __rcu *sighand
kernel/ptrace.c:743:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/ptrace.c:743:37: sparse: expected struct spinlock [usertype] *lock
kernel/ptrace.c:743:37: sparse: got struct spinlock [noderef] __rcu *
kernel/ptrace.c:751:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/ptrace.c:751:39: sparse: expected struct spinlock [usertype] *lock
kernel/ptrace.c:751:39: sparse: got struct spinlock [noderef] __rcu *
kernel/ptrace.c:862:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/ptrace.c:862:29: sparse: expected struct spinlock [usertype] *lock
kernel/ptrace.c:862:29: sparse: got struct spinlock [noderef] __rcu *
kernel/ptrace.c:866:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/ptrace.c:866:31: sparse: expected struct spinlock [usertype] *lock
kernel/ptrace.c:866:31: sparse: got struct spinlock [noderef] __rcu *
kernel/ptrace.c:1221:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/ptrace.c:1221:37: sparse: expected struct spinlock [usertype] *lock
kernel/ptrace.c:1221:37: sparse: got struct spinlock [noderef] __rcu *
kernel/ptrace.c:1223:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/ptrace.c:1223:39: sparse: expected struct spinlock [usertype] *lock
kernel/ptrace.c:1223:39: sparse: got struct spinlock [noderef] __rcu *
kernel/ptrace.c: note: in included file (through include/linux/rcuwait.h, include/linux/mm.h):
include/linux/sched/signal.h:756:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
include/linux/sched/signal.h:756:37: sparse: expected struct spinlock [usertype] *lock
include/linux/sched/signal.h:756:37: sparse: got struct spinlock [noderef] __rcu *
>> kernel/ptrace.c:380:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *_T @@ got struct spinlock [noderef] __rcu * @@
kernel/ptrace.c:380:9: sparse: expected struct spinlock [usertype] *_T
kernel/ptrace.c:380:9: sparse: got struct spinlock [noderef] __rcu *
kernel/ptrace.c:409:12: sparse: sparse: context imbalance in 'ptrace_attach' - different lock contexts for basic block
kernel/ptrace.c:500:38: sparse: sparse: dereference of noderef expression
include/linux/sched/signal.h:756:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
include/linux/sched/signal.h:756:37: sparse: expected struct spinlock [usertype] *lock
include/linux/sched/signal.h:756:37: sparse: got struct spinlock [noderef] __rcu *
kernel/ptrace.c:690:9: sparse: sparse: context imbalance in 'ptrace_getsiginfo' - different lock contexts for basic block
include/linux/sched/signal.h:756:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
include/linux/sched/signal.h:756:37: sparse: expected struct spinlock [usertype] *lock
include/linux/sched/signal.h:756:37: sparse: got struct spinlock [noderef] __rcu *
kernel/ptrace.c:706:9: sparse: sparse: context imbalance in 'ptrace_setsiginfo' - different lock contexts for basic block
include/linux/sched/signal.h:756:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
include/linux/sched/signal.h:756:37: sparse: expected struct spinlock [usertype] *lock
include/linux/sched/signal.h:756:37: sparse: got struct spinlock [noderef] __rcu *
include/linux/sched/signal.h:756:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
include/linux/sched/signal.h:756:37: sparse: expected struct spinlock [usertype] *lock
include/linux/sched/signal.h:756:37: sparse: got struct spinlock [noderef] __rcu *
kernel/ptrace.c:1384:9: sparse: sparse: context imbalance in 'ptrace_request' - different lock contexts for basic block
--
kernel/signal.c: note: in included file (through include/uapi/asm-generic/signal.h, include/asm-generic/signal.h, arch/arc/include/uapi/asm/signal.h, ...):
include/uapi/asm-generic/signal-defs.h:83:29: sparse: sparse: multiple address spaces given
kernel/signal.c:191:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:191:31: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:191:31: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:194:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:194:33: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:194:33: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:497:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:497:9: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:497:9: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:501:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:501:34: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:501:34: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:523:53: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct k_sigaction *ka @@ got struct k_sigaction [noderef] __rcu * @@
kernel/signal.c:523:53: sparse: expected struct k_sigaction *ka
kernel/signal.c:523:53: 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:624:9: 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:624:9: sparse: expected struct lockdep_map const *lock
kernel/signal.c:624:9: sparse: got struct lockdep_map [noderef] __rcu *
kernel/signal.c:723:9: 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:723:9: sparse: expected struct lockdep_map const *lock
kernel/signal.c:723:9: sparse: got struct lockdep_map [noderef] __rcu *
kernel/signal.c:754:9: 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:754:9: sparse: expected struct lockdep_map const *lock
kernel/signal.c:754:9: sparse: got struct lockdep_map [noderef] __rcu *
kernel/signal.c:855:9: 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:855:9: sparse: expected struct lockdep_map const *lock
kernel/signal.c:855:9: sparse: got struct lockdep_map [noderef] __rcu *
kernel/signal.c:1050:9: 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:1050:9: sparse: expected struct lockdep_map const *lock
kernel/signal.c:1050:9: sparse: got struct lockdep_map [noderef] __rcu *
kernel/signal.c:1235:9: sparse: sparse: no member 'ip' in struct pt_regs
kernel/signal.c:1241:29: sparse: sparse: no member 'ip' in struct pt_regs
kernel/signal.c:1241:29: sparse: sparse: cast from unknown type
kernel/signal.c:1241:29: sparse: sparse: no member 'ip' in struct pt_regs
kernel/signal.c:1241:29: sparse: sparse: cast from unknown type
kernel/signal.c:1241:29: sparse: sparse: cannot dereference this type
kernel/signal.c:1241:29: sparse: sparse: non-scalar type in conditional:
kernel/signal.c:1241:29: sparse: void
kernel/signal.c:1302:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:1302:9: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:1302:9: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:1303:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct k_sigaction *action @@ got struct k_sigaction [noderef] __rcu * @@
kernel/signal.c:1303:16: sparse: expected struct k_sigaction *action
kernel/signal.c:1303:16: sparse: got struct k_sigaction [noderef] __rcu *
kernel/signal.c:1324:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:1324:34: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:1324:34: sparse: got struct spinlock [noderef] __rcu *
>> kernel/signal.c:1927:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *_T @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:1927:9: sparse: expected struct spinlock [usertype] *_T
kernel/signal.c:1927:9: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2192:44: sparse: sparse: cast removes address space '__rcu' of expression
kernel/signal.c:2211:65: 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:2211:65: sparse: expected struct task_struct *tsk
kernel/signal.c:2211:65: sparse: got struct task_struct [noderef] __rcu *parent
kernel/signal.c:2212:40: sparse: sparse: cast removes address space '__rcu' of expression
kernel/signal.c:2230:14: 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:2230:14: sparse: expected struct sighand_struct *psig
kernel/signal.c:2230:14: sparse: got struct sighand_struct [noderef] __rcu *[noderef] __rcu sighand
kernel/signal.c:2259:53: 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:2259:53: sparse: expected struct task_struct *t
kernel/signal.c:2259:53: sparse: got struct task_struct [noderef] __rcu *parent
kernel/signal.c:2260:34: 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:2260:34: sparse: expected struct task_struct *parent
kernel/signal.c:2260:34: sparse: got struct task_struct [noderef] __rcu *parent
kernel/signal.c:2289:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu *parent @@
kernel/signal.c:2289:24: sparse: expected struct task_struct *parent
kernel/signal.c:2289:24: sparse: got struct task_struct [noderef] __rcu *parent
kernel/signal.c:2292:24: 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:2292:24: sparse: expected struct task_struct *parent
kernel/signal.c:2292:24: sparse: got struct task_struct [noderef] __rcu *real_parent
kernel/signal.c:2325:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sighand_struct *sighand @@ got struct sighand_struct [noderef] __rcu *sighand @@
kernel/signal.c:2325:17: sparse: expected struct sighand_struct *sighand
kernel/signal.c:2325:17: sparse: got struct sighand_struct [noderef] __rcu *sighand
kernel/signal.c:2365:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2365:41: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2365:41: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2367:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2367:39: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2367:39: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2424:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2424:33: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2424:33: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2482:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2482:31: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2482:31: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2522:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2522:31: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2522:31: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2524:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2524:33: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2524:33: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2622:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2622:41: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2622:41: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2706:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2706:41: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2706:41: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2718:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:2718:33: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:2718:33: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:2761:52: 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:2761:52: sparse: expected struct task_struct *tsk
kernel/signal.c:2761:52: sparse: got struct task_struct [noderef] __rcu *parent
kernel/signal.c:2763:49: sparse: sparse: cast removes address space '__rcu' of expression
kernel/signal.c:2801:49: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sighand_struct *sighand @@ got struct sighand_struct [noderef] __rcu *sighand @@
kernel/signal.c:2801:49: sparse: expected struct sighand_struct *sighand
kernel/signal.c:2801:49: sparse: got struct sighand_struct [noderef] __rcu *sighand
kernel/signal.c:3133:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3133:27: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3133:27: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3153:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3153:29: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3153:29: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3220:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3220:27: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3220:27: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3222:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3222:29: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3222:29: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3373:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3373:31: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3373:31: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3376:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3376:33: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3376:33: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3765:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3765:27: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3765:27: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3777:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3777:37: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3777:37: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3782:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3782:35: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3782:35: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:3787:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:3787:29: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:3787:29: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:4279:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:4279:31: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:4279:31: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:4291:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:4291:33: sparse: expected struct spinlock [usertype] *lock
kernel/signal.c:4291:33: sparse: got struct spinlock [noderef] __rcu *
kernel/signal.c:4309:11: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct k_sigaction *k @@ got struct k_sigaction [noderef] __rcu * @@
kernel/signal.c:4309:11: sparse: expected struct k_sigaction *k
kernel/signal.c:4309:11: sparse: got struct k_sigaction [noderef] __rcu *
kernel/signal.c:4311:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/signal.c:4311:25: sparse: expected struct spinlock [usertype] *lock
--
kernel/time/posix-timers.c:345:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/time/posix-timers.c:345:29: sparse: expected struct spinlock [usertype] *lock
kernel/time/posix-timers.c:345:29: sparse: got struct spinlock [noderef] __rcu *
kernel/time/posix-timers.c:352:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@
kernel/time/posix-timers.c:352:27: sparse: expected struct spinlock [usertype] *lock
kernel/time/posix-timers.c:352:27: sparse: got struct spinlock [noderef] __rcu *
>> kernel/time/posix-timers.c:554:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *_T @@ got struct spinlock [noderef] __rcu * @@
kernel/time/posix-timers.c:554:17: sparse: expected struct spinlock [usertype] *_T
kernel/time/posix-timers.c:554:17: sparse: got struct spinlock [noderef] __rcu *
kernel/time/posix-timers.c:1042:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *_T @@ got struct spinlock [noderef] __rcu * @@
kernel/time/posix-timers.c:1042:9: sparse: expected struct spinlock [usertype] *_T
kernel/time/posix-timers.c:1042:9: sparse: got struct spinlock [noderef] __rcu *
kernel/time/posix-timers.c:1090:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *_T @@ got struct spinlock [noderef] __rcu * @@
kernel/time/posix-timers.c:1090:9: sparse: expected struct spinlock [usertype] *_T
kernel/time/posix-timers.c:1090:9: sparse: got struct spinlock [noderef] __rcu *
kernel/time/posix-timers.c:134:13: sparse: sparse: context imbalance in 'posix_timer_add_at' - wrong count at exit
kernel/time/posix-timers.c:306:13: sparse: sparse: context imbalance in '__posixtimer_deliver_signal' - wrong count at exit
kernel/time/posix-timers.c:336:6: sparse: sparse: context imbalance in 'posixtimer_deliver_signal' - unexpected unlock
kernel/time/posix-timers.c:374:29: sparse: sparse: context imbalance in 'posix_timer_fn' - wrong count at exit
kernel/time/posix-timers.c:449:13: sparse: sparse: context imbalance in 'posix_timer_unhash_and_free' - wrong count at exit
kernel/time/posix-timers.c:465:12: sparse: sparse: context imbalance in 'do_timer_create' - different lock contexts for basic block
kernel/time/posix-timers.c:603:24: sparse: sparse: context imbalance in '__lock_timer' - different lock contexts for basic block
kernel/time/posix-timers.c:1050:9: sparse: sparse: context imbalance in 'posix_timer_delete' - wrong count at exit
kernel/time/posix-timers.c:1094:9: sparse: sparse: context imbalance in 'exit_itimers' - different lock contexts for basic block
vim +380 kernel/ptrace.c
ee1fee900537b5 Jann Horn 2022-03-19 377
08701813a1b439 Oleg Nesterov 2024-01-22 378 static inline void ptrace_set_stopped(struct task_struct *task, bool seize)
5431fdd2c181dd Peter Zijlstra 2023-09-17 379 {
5431fdd2c181dd Peter Zijlstra 2023-09-17 @380 guard(spinlock)(&task->sighand->siglock);
5431fdd2c181dd Peter Zijlstra 2023-09-17 381
08701813a1b439 Oleg Nesterov 2024-01-22 382 /* SEIZE doesn't trap tracee on attach */
08701813a1b439 Oleg Nesterov 2024-01-22 383 if (!seize)
08701813a1b439 Oleg Nesterov 2024-01-22 384 send_signal_locked(SIGSTOP, SEND_SIG_PRIV, task, PIDTYPE_PID);
5431fdd2c181dd Peter Zijlstra 2023-09-17 385 /*
5431fdd2c181dd Peter Zijlstra 2023-09-17 386 * If the task is already STOPPED, set JOBCTL_TRAP_STOP and
5431fdd2c181dd Peter Zijlstra 2023-09-17 387 * TRAPPING, and kick it so that it transits to TRACED. TRAPPING
5431fdd2c181dd Peter Zijlstra 2023-09-17 388 * will be cleared if the child completes the transition or any
5431fdd2c181dd Peter Zijlstra 2023-09-17 389 * event which clears the group stop states happens. We'll wait
5431fdd2c181dd Peter Zijlstra 2023-09-17 390 * for the transition to complete before returning from this
5431fdd2c181dd Peter Zijlstra 2023-09-17 391 * function.
5431fdd2c181dd Peter Zijlstra 2023-09-17 392 *
5431fdd2c181dd Peter Zijlstra 2023-09-17 393 * This hides STOPPED -> RUNNING -> TRACED transition from the
5431fdd2c181dd Peter Zijlstra 2023-09-17 394 * attaching thread but a different thread in the same group can
5431fdd2c181dd Peter Zijlstra 2023-09-17 395 * still observe the transient RUNNING state. IOW, if another
5431fdd2c181dd Peter Zijlstra 2023-09-17 396 * thread's WNOHANG wait(2) on the stopped tracee races against
5431fdd2c181dd Peter Zijlstra 2023-09-17 397 * ATTACH, the wait(2) may fail due to the transient RUNNING.
5431fdd2c181dd Peter Zijlstra 2023-09-17 398 *
5431fdd2c181dd Peter Zijlstra 2023-09-17 399 * The following task_is_stopped() test is safe as both transitions
5431fdd2c181dd Peter Zijlstra 2023-09-17 400 * in and out of STOPPED are protected by siglock.
5431fdd2c181dd Peter Zijlstra 2023-09-17 401 */
5431fdd2c181dd Peter Zijlstra 2023-09-17 402 if (task_is_stopped(task) &&
5431fdd2c181dd Peter Zijlstra 2023-09-17 403 task_set_jobctl_pending(task, JOBCTL_TRAP_STOP | JOBCTL_TRAPPING)) {
5431fdd2c181dd Peter Zijlstra 2023-09-17 404 task->jobctl &= ~JOBCTL_STOPPED;
5431fdd2c181dd Peter Zijlstra 2023-09-17 405 signal_wake_up_state(task, __TASK_STOPPED);
5431fdd2c181dd Peter Zijlstra 2023-09-17 406 }
5431fdd2c181dd Peter Zijlstra 2023-09-17 407 }
5431fdd2c181dd Peter Zijlstra 2023-09-17 408
:::::: The code at line 380 was first introduced by commit
:::::: 5431fdd2c181dd2eac218e45b44deb2925fa48f0 ptrace: Convert ptrace_attach() to use lock guards
:::::: TO: Peter Zijlstra <peterz@...radead.org>
:::::: CC: Peter Zijlstra <peterz@...radead.org>
--
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