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| author |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2019-09-16 09:56:27 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2019-09-16 09:56:27 -0700 |
| commit | 0898782247ae533d1f4e47a06bc5d4870931b284 (patch) | |
| tree | 21f75cc590542a870f42350b9410fc0588f02b79 /kernel/stacktrace.c | |
| parent | Input: elan_i2c - remove Lenovo Legion Y7000 PnpID (diff) | |
| parent | Input: sidewinder - make array seq static const, makes object smaller (diff) | |
Merge branch 'next' into for-linus
Prepare input updates for 5.4 merge window.
Diffstat (limited to 'kernel/stacktrace.c')
| -rw-r--r-- | kernel/stacktrace.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/kernel/stacktrace.c b/kernel/stacktrace.c index 36139de0a3c4..f5440abb7532 100644 --- a/kernel/stacktrace.c +++ b/kernel/stacktrace.c @@ -226,12 +226,17 @@ unsigned int stack_trace_save_user(unsigned long *store, unsigned int size) .store = store, .size = size, }; + mm_segment_t fs; /* Trace user stack if not a kernel thread */ - if (!current->mm) + if (current->flags & PF_KTHREAD) return 0; + fs = get_fs(); + set_fs(USER_DS); arch_stack_walk_user(consume_entry, &c, task_pt_regs(current)); + set_fs(fs); + return c.len; } #endif @@ -255,14 +260,6 @@ save_stack_trace_regs(struct pt_regs *regs, struct stack_trace *trace) WARN_ONCE(1, KERN_INFO "save_stack_trace_regs() not implemented yet.\n"); } -__weak int -save_stack_trace_tsk_reliable(struct task_struct *tsk, - struct stack_trace *trace) -{ - WARN_ONCE(1, KERN_INFO "save_stack_tsk_reliable() not implemented yet.\n"); - return -ENOSYS; -} - /** * stack_trace_save - Save a stack trace into a storage array * @store: Pointer to storage array |