[LU-7947] Suspicious dereference of pointer before NULL check in llog_cancel_rec()

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.9.0
• Fix Version/s: Lustre 2.11.0
• Type: Bug
• Priority: Minor
• Reporter: Dmitry Eremin (Inactive)
• Assignee: WC Triage
• Resolution: Fixed
• Labels: kw
• Severity: 3

Description

Suspicious dereference of pointer 'loghandle' before NULL check at line 218

• An event which alters the program's state, leading to the defect
  llog.c:202: 'loghandle' is dereferenced.
• An event which alters the program's state, leading to the defect
  llog.c:218: 'loghandle' is checked for NULL.

197		int llog_cancel_rec(const struct lu_env *env, struct llog_handle *loghandle,
198				    int index)
199		{
200			struct llog_thread_info *lgi = llog_info(env);
201			struct dt_device	*dt;
202			struct llog_log_hdr	*llh = loghandle->lgh_hdr;
203			struct thandle		*th;
204			int			 rc;
205			int rc1;
206			bool subtract_count = false;
207		 
208			ENTRY;
209		 
210			CDEBUG(D_RPCTRACE, "Canceling %d in log "DOSTID"\n", index,
211			       POSTID(&loghandle->lgh_id.lgl_oi));
212		 
213			if (index == 0) {...}
217		 
218			LASSERT(loghandle != NULL);

Comments

[Gerrit Updater]

Arshad Hussain ([e-mail]) uploaded a new patch: https://review.whamcloud.com/24561
Subject: LU-7947 obdclass: Move assignment below LASSERT()
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: ffade7f23b66b91b95f68b541f9b4ef1d3aa9227

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/24561/
Subject: LU-7947 obdclass: Move assignment below LASSERT()
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: bed1cbb3db18e01b933f1a799b4f4fd4ff707cfa

[Peter Jones]

Landed for 2.11