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| author | Vu Nguyen Anh Khoa <khoavna.tin.2225@gmail.com> | 2026-06-21 15:57:43 +0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-07-17 15:49:30 +0200 |
| commit | 937cd823bb2c950a935dbd32313586911caae2f2 (patch) | |
| tree | f816b04865b1a809a32cceb413d4ba27b9523580 /tools/perf/scripts/python/bin/stackcollapse-report | |
| parent | 6994c8b4ef95114073a51d6143185bca39d6e5d5 (diff) | |
misc: nsm: do not unlock mutex before locking it
nsm_dev_ioctl() jumps to the common out label when the initial
copy_from_user() fails. That failure path runs before
mutex_lock(&nsm->lock), but the out label unconditionally calls
mutex_unlock(&nsm->lock).
Return -EFAULT directly for the pre-lock copy_from_user() failure so
only paths that acquired the mutex release it.
Signed-off-by: Vu Nguyen Anh Khoa <khoavna.tin.2225@gmail.com>
Reviewed-by: Alexander Graf <graf@amazon.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260621085743.76329-2-khoavna.tin.2225@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-report')
0 files changed, 0 insertions, 0 deletions