diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2020-06-03 18:03:22 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-06-04 11:13:53 -0600 |
| commit | 3232dd02af65f2d01be641120d2a710176b0c7a7 (patch) | |
| tree | 5360d001f9c59a513515f6c390f024a0c803a511 /tools/kvm | |
| parent | fd2206e4e97b5bae422d9f2f9ebbc79bc97e44a5 (diff) | |
| download | linux-3232dd02af65f2d01be641120d2a710176b0c7a7.tar.bz2 | |
io_uring: fix {SQ,IO}POLL with unsupported opcodes
IORING_SETUP_IOPOLL is defined only for read/write, other opcodes should
be disallowed, otherwise it'll get an error as below. Also refuse
open/close with SQPOLL, as the polling thread wouldn't know which file
table to use.
RIP: 0010:io_iopoll_getevents+0x111/0x5a0
Call Trace:
? _raw_spin_unlock_irqrestore+0x24/0x40
? do_send_sig_info+0x64/0x90
io_iopoll_reap_events.part.0+0x5e/0xa0
io_ring_ctx_wait_and_kill+0x132/0x1c0
io_uring_release+0x20/0x30
__fput+0xcd/0x230
____fput+0xe/0x10
task_work_run+0x67/0xa0
do_exit+0x353/0xb10
? handle_mm_fault+0xd4/0x200
? syscall_trace_enter+0x18c/0x2c0
do_group_exit+0x43/0xa0
__x64_sys_exit_group+0x18/0x20
do_syscall_64+0x60/0x1e0
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
[axboe: allow provide/remove buffers and files update]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/kvm')
0 files changed, 0 insertions, 0 deletions