diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-06 22:15:42 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-06 22:15:42 -0800 |
| commit | a2e5790d841658485d642196dbb0927303d6c22f (patch) | |
| tree | b3d28c9bcb7da6880806146fd22a88a7ee7f733e /kernel/kcov.c | |
| parent | ab2d92ad881da11331280aedf612d82e61cb6d41 (diff) | |
| parent | 60c3e026d73ccabb075fb70ba02f8512ab40cf2c (diff) | |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton:
- kasan updates
- procfs
- lib/bitmap updates
- other lib/ updates
- checkpatch tweaks
- rapidio
- ubsan
- pipe fixes and cleanups
- lots of other misc bits
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (114 commits)
Documentation/sysctl/user.txt: fix typo
MAINTAINERS: update ARM/QUALCOMM SUPPORT patterns
MAINTAINERS: update various PALM patterns
MAINTAINERS: update "ARM/OXNAS platform support" patterns
MAINTAINERS: update Cortina/Gemini patterns
MAINTAINERS: remove ARM/CLKDEV SUPPORT file pattern
MAINTAINERS: remove ANDROID ION pattern
mm: docs: add blank lines to silence sphinx "Unexpected indentation" errors
mm: docs: fix parameter names mismatch
mm: docs: fixup punctuation
pipe: read buffer limits atomically
pipe: simplify round_pipe_size()
pipe: reject F_SETPIPE_SZ with size over UINT_MAX
pipe: fix off-by-one error when checking buffer limits
pipe: actually allow root to exceed the pipe buffer limits
pipe, sysctl: remove pipe_proc_fn()
pipe, sysctl: drop 'min' parameter from pipe-max-size converter
kasan: rework Kconfig settings
crash_dump: is_kdump_kernel can be boolean
kernel/mutex: mutex_is_locked can be boolean
...
Diffstat (limited to 'kernel/kcov.c')
| -rw-r--r-- | kernel/kcov.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/kcov.c b/kernel/kcov.c index 7594c033d98a..2c16f1ab5e10 100644 --- a/kernel/kcov.c +++ b/kernel/kcov.c @@ -358,7 +358,8 @@ static int kcov_ioctl_locked(struct kcov *kcov, unsigned int cmd, */ if (kcov->mode != KCOV_MODE_INIT || !kcov->area) return -EINVAL; - if (kcov->t != NULL) + t = current; + if (kcov->t != NULL || t->kcov != NULL) return -EBUSY; if (arg == KCOV_TRACE_PC) kcov->mode = KCOV_MODE_TRACE_PC; @@ -370,7 +371,6 @@ static int kcov_ioctl_locked(struct kcov *kcov, unsigned int cmd, #endif else return -EINVAL; - t = current; /* Cache in task struct for performance. */ t->kcov_size = kcov->size; t->kcov_area = kcov->area; |