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Guard against NULL pointer dereference.

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Reviewed by:	scottl
Approved by:	rwatson (mentor)
Sponsored by:	FreeBSD Foundation
Found with:	Coverity Prevent(tm)
CID:		1847
This commit is contained in:
Edward Tomasz Napierala 2009-01-23 21:05:16 +00:00
parent 53f8b22b34
commit ac37e649a9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=187650
1 changed files with 4 additions and 1 deletions
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5
sys/cam/cam_xpt.c
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@ -4177,7 +4177,10 @@ xpt_path_string(struct cam_path *path, char *str, size_t str_len)
{
struct sbuf sb;
mtx_assert(path->bus->sim->mtx, MA_OWNED);
#ifdef INVARIANTS
if (path != NULL && path->bus != NULL && path->bus->sim != NULL)
mtx_assert(path->bus->sim->mtx, MA_OWNED);
#endif
sbuf_new(&sb, str, str_len, 0);