for-linus-20180610

-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAlsdUjYQHGF4Ym9lQGtl
 cm5lbC5kawAKCRD301j7KXHgplguD/963DhUe/u3mKGYa/iQxXRrbR/pnBvm/Uaf
 Xj9ikyKXgenz2cmvBvVbCAXfaugn3i6NbtBboaNWVSoUHPK7rbG682RxqeZOUOYk
 qKLAAMZefHbYyoKWsClfVgbO6DlLTHjBJ/uaxR0npV/ZsQ2HjNN4lCdODiR0/0Px
 oJNPdALJs1eO/u4hmhMbsSYdg5QVaYqv5p+Ssk9cIxdUTwkgjdWRyKJm4aZsfedp
 oB7hHtkB6SEO5KA7CSzruXhKWBT1hNBKzrvLBVXZUEn35d2SeqCrUZ3VaL1yLDg7
 MCWN7xtAcu3fF6tWRGKMngki+lbf447bqcmB/lCr2Zmv0nF7bMgo0r5Ik8bl3gtp
 SwV4EDZWDaFibs/UGE8IHG2QYEb1ohaSEQKJpBEa9aZd38lhiKAMfH07b97//PmA
 BckguoPrwmUAjiG4av1eOqhNptRRXFmAMFvyYZcn+7T5Mp0QQd19P6Sk9ZZYUbbd
 v/8J1oqkbt5NS0LS3HQ2jnQRnfSvkIm2v59mpKJBFISzPfzjsVD73Ua/z9qPneOT
 EwLPxI91Pgu3ZuMZUMosC11RsB36xU+fU83RRytwXvFAK3REy+KpWf2Tr0pcwGoU
 jaYN+TlXl9BX18vNSV3X4PXUpTeEqRi6HhvTEjNM/2dKkoRrvcVdKwxrZ6y4JzUM
 uw5iJfp4Bg==
 =5ZQ2
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-20180610' of git://git.kernel.dk/linux-block

Pull block flush handling fix from Jens Axboe:
 "Single fix that we should merge now, fixing a regression in queuing
  flush request, accessing request flags after calling the end_request
  handler"

* tag 'for-linus-20180610' of git://git.kernel.dk/linux-block:
  block: fix use-after-free in block flush handling
This commit is contained in:
Linus Torvalds 2018-06-10 10:50:41 -07:00
commit bbaa101303
1 changed files with 3 additions and 1 deletions

View File

@ -169,9 +169,11 @@ static bool blk_flush_complete_seq(struct request *rq,
struct request_queue *q = rq->q;
struct list_head *pending = &fq->flush_queue[fq->flush_pending_idx];
bool queued = false, kicked;
unsigned int cmd_flags;
BUG_ON(rq->flush.seq & seq);
rq->flush.seq |= seq;
cmd_flags = rq->cmd_flags;
if (likely(!error))
seq = blk_flush_cur_seq(rq);
@ -212,7 +214,7 @@ static bool blk_flush_complete_seq(struct request *rq,
BUG();
}
kicked = blk_kick_flush(q, fq, rq->cmd_flags);
kicked = blk_kick_flush(q, fq, cmd_flags);
return kicked | queued;
}