diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-11-01 17:33:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-11-01 17:33:12 -0700 |
| commit | 0821de28961d58df44ed390d2460f05c9b5195a9 (patch) | |
| tree | 466476842a8c546031c5983d36a0c446f7557b1f /fs/io_uring.c | |
| parent | e5897c7d2e6507ac2423455bada21c8a6b005db6 (diff) | |
| parent | 41591a51f00d2dc7bb9dc6e9bedf56c5cf6f2392 (diff) | |
Merge tag 'for-linus-20191101' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- Two small nvme fixes, one is a fabrics connection fix, the other one
a cleanup made possible by that fix (Anton, via Keith)
- Fix requeue handling in umb ubd (Anton)
- Fix spin_lock_irq() nesting in blk-iocost (Dan)
- Three small io_uring fixes:
- Install io_uring fd after done with ctx (me)
- Clear ->result before every poll issue (me)
- Fix leak of shadow request on error (Pavel)
* tag 'for-linus-20191101' of git://git.kernel.dk/linux-block:
iocost: don't nest spin_lock_irq in ioc_weight_write()
io_uring: ensure we clear io_kiocb->result before each issue
um-ubd: Entrust re-queue to the upper layers
nvme-multipath: remove unused groups_only mode in ana log
nvme-multipath: fix possible io hang after ctrl reconnect
io_uring: don't touch ctx in setup after ring fd install
io_uring: Fix leaked shadow_req
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index a30c4f622cb3..f9a38998f2fc 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -1124,6 +1124,7 @@ static int io_prep_rw(struct io_kiocb *req, const struct sqe_submit *s, kiocb->ki_flags |= IOCB_HIPRI; kiocb->ki_complete = io_complete_rw_iopoll; + req->result = 0; } else { if (kiocb->ki_flags & IOCB_HIPRI) return -EINVAL; @@ -2413,6 +2414,7 @@ static int io_queue_link_head(struct io_ring_ctx *ctx, struct io_kiocb *req, if (ret) { if (ret != -EIOCBQUEUED) { io_free_req(req); + __io_free_req(shadow); io_cqring_add_event(ctx, s->sqe->user_data, ret); return 0; } @@ -3828,10 +3830,6 @@ static int io_uring_create(unsigned entries, struct io_uring_params *p) if (ret) goto err; - ret = io_uring_get_fd(ctx); - if (ret < 0) - goto err; - memset(&p->sq_off, 0, sizeof(p->sq_off)); p->sq_off.head = offsetof(struct io_rings, sq.head); p->sq_off.tail = offsetof(struct io_rings, sq.tail); @@ -3849,6 +3847,14 @@ static int io_uring_create(unsigned entries, struct io_uring_params *p) p->cq_off.overflow = offsetof(struct io_rings, cq_overflow); p->cq_off.cqes = offsetof(struct io_rings, cqes); + /* + * Install ring fd as the very last thing, so we don't risk someone + * having closed it before we finish setup + */ + ret = io_uring_get_fd(ctx); + if (ret < 0) + goto err; + p->features = IORING_FEAT_SINGLE_MMAP; return ret; err: |