diff options
Diffstat (limited to 'sys/dev/hwpmc/hwpmc_mod.c')
| -rw-r--r-- | sys/dev/hwpmc/hwpmc_mod.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/dev/hwpmc/hwpmc_mod.c b/sys/dev/hwpmc/hwpmc_mod.c index 6c7c587..d331a85 100644 --- a/sys/dev/hwpmc/hwpmc_mod.c +++ b/sys/dev/hwpmc/hwpmc_mod.c @@ -41,6 +41,7 @@ __FBSDID("$FreeBSD$"); #include <sys/lock.h> #include <sys/malloc.h> #include <sys/module.h> +#include <sys/mount.h> #include <sys/mutex.h> #include <sys/pmc.h> #include <sys/pmckern.h> @@ -1625,6 +1626,7 @@ pmc_log_kernel_mappings(struct pmc *pm) static void pmc_log_process_mappings(struct pmc_owner *po, struct proc *p) { + int locked; vm_map_t map; struct vnode *vp; struct vmspace *vm; @@ -1733,7 +1735,11 @@ pmc_log_process_mappings(struct pmc_owner *po, struct proc *p) freepath = NULL; pmc_getfilename(vp, &fullpath, &freepath); last_vp = vp; + + locked = VFS_LOCK_GIANT(vp->v_mount); vrele(vp); + VFS_UNLOCK_GIANT(locked); + vp = NULL; pmclog_process_map_in(po, p->p_pid, start_addr, fullpath); if (freepath) |
