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Date: Thu, 13 Oct 2022 21:47:59 +0800
From: kernel test robot <lkp@...el.com>
To: Jens Axboe <axboe@...nel.dk>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: io_uring/io_uring.c:11529:1: sparse: sparse: Using plain integer as
NULL pointer
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: a185a0995518a3355c8623c95c36aaaae489de10
commit: ed29b0b4fd835b058ddd151c49d021e28d631ee6 io_uring: move to separate directory
date: 3 months ago
config: s390-randconfig-s043-20221012
compiler: s390-linux-gcc (GCC) 12.1.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-39-gce1a6720-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ed29b0b4fd835b058ddd151c49d021e28d631ee6
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout ed29b0b4fd835b058ddd151c49d021e28d631ee6
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=s390 SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
sparse warnings: (new ones prefixed by >>)
io_uring/io_uring.c:205:37: sparse: sparse: array of flexible structures
io_uring/io_uring.c:6660:38: sparse: sparse: incorrect type in assignment (different base types) @@ expected signed int [usertype] res @@ got restricted __poll_t @@
io_uring/io_uring.c:6660:38: sparse: expected signed int [usertype] res
io_uring/io_uring.c:6660:38: sparse: got restricted __poll_t
io_uring/io_uring.c:6671:56: sparse: sparse: restricted __poll_t degrades to integer
io_uring/io_uring.c:6670:66: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected restricted __poll_t [usertype] val @@ got unsigned int @@
io_uring/io_uring.c:6670:66: sparse: expected restricted __poll_t [usertype] val
io_uring/io_uring.c:6670:66: sparse: got unsigned int
io_uring/io_uring.c:6670:52: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __poll_t [usertype] mask @@ got unsigned short @@
io_uring/io_uring.c:6670:52: sparse: expected restricted __poll_t [usertype] mask
io_uring/io_uring.c:6670:52: sparse: got unsigned short
io_uring/io_uring.c:6676:50: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected signed int [usertype] res @@ got restricted __poll_t [usertype] mask @@
io_uring/io_uring.c:6676:50: sparse: expected signed int [usertype] res
io_uring/io_uring.c:6676:50: sparse: got restricted __poll_t [usertype] mask
io_uring/io_uring.c:6713:68: sparse: sparse: restricted __poll_t degrades to integer
io_uring/io_uring.c:6713:57: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected restricted __poll_t [usertype] val @@ got unsigned int @@
io_uring/io_uring.c:6713:57: sparse: expected restricted __poll_t [usertype] val
io_uring/io_uring.c:6713:57: sparse: got unsigned int
io_uring/io_uring.c:6831:40: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected int mask @@ got restricted __poll_t [usertype] mask @@
io_uring/io_uring.c:6831:40: sparse: expected int mask
io_uring/io_uring.c:6831:40: sparse: got restricted __poll_t [usertype] mask
io_uring/io_uring.c:6925:24: sparse: sparse: incorrect type in return expression (different base types) @@ expected int @@ got restricted __poll_t [assigned] [usertype] mask @@
io_uring/io_uring.c:6925:24: sparse: expected int
io_uring/io_uring.c:6925:24: sparse: got restricted __poll_t [assigned] [usertype] mask
io_uring/io_uring.c:6945:40: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected int mask @@ got restricted __poll_t [assigned] [usertype] mask @@
io_uring/io_uring.c:6945:40: sparse: expected int mask
io_uring/io_uring.c:6945:40: sparse: got restricted __poll_t [assigned] [usertype] mask
io_uring/io_uring.c:6980:33: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __poll_t [usertype] mask @@ got int @@
io_uring/io_uring.c:6980:33: sparse: expected restricted __poll_t [usertype] mask
io_uring/io_uring.c:6980:33: sparse: got int
io_uring/io_uring.c:7029:33: sparse: sparse: incorrect type in argument 5 (different base types) @@ expected int mask @@ got restricted __poll_t [assigned] [usertype] mask @@
io_uring/io_uring.c:7029:33: sparse: expected int mask
io_uring/io_uring.c:7029:33: sparse: got restricted __poll_t [assigned] [usertype] mask
io_uring/io_uring.c:7029:50: sparse: sparse: incorrect type in argument 6 (different base types) @@ expected int events @@ got restricted __poll_t [usertype] events @@
io_uring/io_uring.c:7029:50: sparse: expected int events
io_uring/io_uring.c:7029:50: sparse: got restricted __poll_t [usertype] events
io_uring/io_uring.c:7143:24: sparse: sparse: invalid assignment: |=
io_uring/io_uring.c:7143:24: sparse: left side has type unsigned int
io_uring/io_uring.c:7143:24: sparse: right side has type restricted __poll_t
io_uring/io_uring.c:7144:65: sparse: sparse: restricted __poll_t degrades to integer
io_uring/io_uring.c:7144:29: sparse: sparse: restricted __poll_t degrades to integer
io_uring/io_uring.c:7144:38: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted __poll_t @@ got unsigned int @@
io_uring/io_uring.c:7144:38: sparse: expected restricted __poll_t
io_uring/io_uring.c:7144:38: sparse: got unsigned int
io_uring/io_uring.c:7233:43: sparse: sparse: invalid assignment: &=
io_uring/io_uring.c:7233:43: sparse: left side has type restricted __poll_t
io_uring/io_uring.c:7233:43: sparse: right side has type int
io_uring/io_uring.c:7234:62: sparse: sparse: restricted __poll_t degrades to integer
io_uring/io_uring.c:7234:43: sparse: sparse: invalid assignment: |=
io_uring/io_uring.c:7234:43: sparse: left side has type restricted __poll_t
io_uring/io_uring.c:7234:43: sparse: right side has type unsigned int
>> io_uring/io_uring.c:11529:1: sparse: sparse: Using plain integer as NULL pointer
>> io_uring/io_uring.c:11529:1: sparse: sparse: Using plain integer as NULL pointer
io_uring/io_uring.c:12132:1: sparse: sparse: Using plain integer as NULL pointer
io_uring/io_uring.c:12132:1: sparse: sparse: Using plain integer as NULL pointer
io_uring/io_uring.c:12727:1: sparse: sparse: Using plain integer as NULL pointer
io_uring/io_uring.c:12727:1: sparse: sparse: Using plain integer as NULL pointer
io_uring/io_uring.c:2673:17: sparse: sparse: context imbalance in 'handle_prev_tw_list' - different lock contexts for basic block
io_uring/io_uring.c:9311:9: sparse: sparse: context imbalance in 'io_sq_thread_unpark' - wrong count at exit
io_uring/io_uring.c:9322:9: sparse: sparse: context imbalance in 'io_sq_thread_park' - wrong count at exit
vim +11529 io_uring/io_uring.c
c73ebb685fb6df fs/io_uring.c Hao Xu 2020-11-03 11528
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 @11529 SYSCALL_DEFINE6(io_uring_enter, unsigned int, fd, u32, to_submit,
c73ebb685fb6df fs/io_uring.c Hao Xu 2020-11-03 11530 u32, min_complete, u32, flags, const void __user *, argp,
c73ebb685fb6df fs/io_uring.c Hao Xu 2020-11-03 11531 size_t, argsz)
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11532 {
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11533 struct io_ring_ctx *ctx;
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11534 struct fd f;
33f993da982973 fs/io_uring.c Pavel Begunkov 2021-03-19 11535 long ret;
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11536
4c6e277c4cc4a6 fs/io_uring.c Jens Axboe 2020-07-01 11537 io_run_task_work();
b41e98524e424d fs/io_uring.c Jens Axboe 2020-02-17 11538
33f993da982973 fs/io_uring.c Pavel Begunkov 2021-03-19 11539 if (unlikely(flags & ~(IORING_ENTER_GETEVENTS | IORING_ENTER_SQ_WAKEUP |
e7a6c00dc77aed fs/io_uring.c Jens Axboe 2022-03-04 11540 IORING_ENTER_SQ_WAIT | IORING_ENTER_EXT_ARG |
e7a6c00dc77aed fs/io_uring.c Jens Axboe 2022-03-04 11541 IORING_ENTER_REGISTERED_RING)))
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11542 return -EINVAL;
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11543
e7a6c00dc77aed fs/io_uring.c Jens Axboe 2022-03-04 11544 /*
e7a6c00dc77aed fs/io_uring.c Jens Axboe 2022-03-04 11545 * Ring fd has been registered via IORING_REGISTER_RING_FDS, we
e7a6c00dc77aed fs/io_uring.c Jens Axboe 2022-03-04 11546 * need only dereference our task private array to find it.
e7a6c00dc77aed fs/io_uring.c Jens Axboe 2022-03-04 11547 */
e7a6c00dc77aed fs/io_uring.c Jens Axboe 2022-03-04 11548 if (flags & IORING_ENTER_REGISTERED_RING) {
e7a6c00dc77aed fs/io_uring.c Jens Axboe 2022-03-04 11549 struct io_uring_task *tctx = current->io_uring;
e7a6c00dc77aed fs/io_uring.c Jens Axboe 2022-03-04 11550
e7a6c00dc77aed fs/io_uring.c Jens Axboe 2022-03-04 11551 if (!tctx || fd >= IO_RINGFD_REG_MAX)
e7a6c00dc77aed fs/io_uring.c Jens Axboe 2022-03-04 11552 return -EINVAL;
e7a6c00dc77aed fs/io_uring.c Jens Axboe 2022-03-04 11553 fd = array_index_nospec(fd, IO_RINGFD_REG_MAX);
e7a6c00dc77aed fs/io_uring.c Jens Axboe 2022-03-04 11554 f.file = tctx->registered_rings[fd];
4329490a78b66a fs/io_uring.c Al Viro 2022-05-11 11555 f.flags = 0;
e7a6c00dc77aed fs/io_uring.c Jens Axboe 2022-03-04 11556 } else {
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11557 f = fdget(fd);
4329490a78b66a fs/io_uring.c Al Viro 2022-05-11 11558 }
4329490a78b66a fs/io_uring.c Al Viro 2022-05-11 11559
33f993da982973 fs/io_uring.c Pavel Begunkov 2021-03-19 11560 if (unlikely(!f.file))
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11561 return -EBADF;
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11562
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11563 ret = -EOPNOTSUPP;
33f993da982973 fs/io_uring.c Pavel Begunkov 2021-03-19 11564 if (unlikely(f.file->f_op != &io_uring_fops))
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11565 goto out_fput;
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11566
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11567 ret = -ENXIO;
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11568 ctx = f.file->private_data;
33f993da982973 fs/io_uring.c Pavel Begunkov 2021-03-19 11569 if (unlikely(!percpu_ref_tryget(&ctx->refs)))
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11570 goto out_fput;
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11571
7e84e1c7566a1d fs/io_uring.c Stefano Garzarella 2020-08-27 11572 ret = -EBADFD;
33f993da982973 fs/io_uring.c Pavel Begunkov 2021-03-19 11573 if (unlikely(ctx->flags & IORING_SETUP_R_DISABLED))
7e84e1c7566a1d fs/io_uring.c Stefano Garzarella 2020-08-27 11574 goto out;
7e84e1c7566a1d fs/io_uring.c Stefano Garzarella 2020-08-27 11575
6c271ce2f1d572 fs/io_uring.c Jens Axboe 2019-01-10 11576 /*
6c271ce2f1d572 fs/io_uring.c Jens Axboe 2019-01-10 11577 * For SQ polling, the thread will do all submissions and completions.
6c271ce2f1d572 fs/io_uring.c Jens Axboe 2019-01-10 11578 * Just return the requested submit count, and wake the thread if
6c271ce2f1d572 fs/io_uring.c Jens Axboe 2019-01-10 11579 * we were asked to.
6c271ce2f1d572 fs/io_uring.c Jens Axboe 2019-01-10 11580 */
b2a9eadab85730 fs/io_uring.c Jens Axboe 2019-09-12 11581 ret = 0;
6c271ce2f1d572 fs/io_uring.c Jens Axboe 2019-01-10 11582 if (ctx->flags & IORING_SETUP_SQPOLL) {
90f67366cb8871 fs/io_uring.c Pavel Begunkov 2021-08-09 11583 io_cqring_overflow_flush(ctx);
6c503150ae33ee fs/io_uring.c Pavel Begunkov 2021-01-04 11584
21f965221e7c42 fs/io_uring.c Jens Axboe 2021-08-14 11585 if (unlikely(ctx->sq_data->thread == NULL)) {
041474885e9707 fs/io_uring.c Stefan Metzmacher 2021-03-07 11586 ret = -EOWNERDEAD;
5f3f26f98ae484 fs/io_uring.c Jens Axboe 2021-02-25 11587 goto out;
21f965221e7c42 fs/io_uring.c Jens Axboe 2021-08-14 11588 }
6c271ce2f1d572 fs/io_uring.c Jens Axboe 2019-01-10 11589 if (flags & IORING_ENTER_SQ_WAKEUP)
534ca6d684f1fe fs/io_uring.c Jens Axboe 2020-09-02 11590 wake_up(&ctx->sq_data->wait);
d9d05217cb6990 fs/io_uring.c Pavel Begunkov 2021-01-08 11591 if (flags & IORING_ENTER_SQ_WAIT) {
d9d05217cb6990 fs/io_uring.c Pavel Begunkov 2021-01-08 11592 ret = io_sqpoll_wait_sq(ctx);
d9d05217cb6990 fs/io_uring.c Pavel Begunkov 2021-01-08 11593 if (ret)
d9d05217cb6990 fs/io_uring.c Pavel Begunkov 2021-01-08 11594 goto out;
d9d05217cb6990 fs/io_uring.c Pavel Begunkov 2021-01-08 11595 }
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11596 ret = to_submit;
b2a9eadab85730 fs/io_uring.c Jens Axboe 2019-09-12 11597 } else if (to_submit) {
eef51daa72f745 fs/io_uring.c Pavel Begunkov 2021-06-14 11598 ret = io_uring_add_tctx_node(ctx);
0f2122045b9462 fs/io_uring.c Jens Axboe 2020-09-13 11599 if (unlikely(ret))
0f2122045b9462 fs/io_uring.c Jens Axboe 2020-09-13 11600 goto out;
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11601
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11602 mutex_lock(&ctx->uring_lock);
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11603 ret = io_submit_sqes(ctx, to_submit);
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11604 if (ret != to_submit) {
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11605 mutex_unlock(&ctx->uring_lock);
7c504e65206a43 fs/io_uring.c Pavel Begunkov 2019-12-18 11606 goto out;
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11607 }
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11608 if ((flags & IORING_ENTER_GETEVENTS) && ctx->syscall_iopoll)
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11609 goto iopoll_locked;
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11610 mutex_unlock(&ctx->uring_lock);
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11611 }
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11612 if (flags & IORING_ENTER_GETEVENTS) {
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11613 int ret2;
773697b610bff9 fs/io_uring.c Pavel Begunkov 2022-03-22 11614 if (ctx->syscall_iopoll) {
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11615 /*
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11616 * We disallow the app entering submit/complete with
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11617 * polling, but we still need to lock the ring to
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11618 * prevent racing with polled issue that got punted to
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11619 * a workqueue.
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11620 */
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11621 mutex_lock(&ctx->uring_lock);
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11622 iopoll_locked:
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11623 ret2 = io_validate_ext_arg(flags, argp, argsz);
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11624 if (likely(!ret2)) {
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11625 min_complete = min(min_complete,
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11626 ctx->cq_entries);
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11627 ret2 = io_iopoll_check(ctx, min_complete);
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11628 }
d487b43cd3276e fs/io_uring.c Pavel Begunkov 2022-03-22 11629 mutex_unlock(&ctx->uring_lock);
def596e9557c91 fs/io_uring.c Jens Axboe 2019-01-09 11630 } else {
c73ebb685fb6df fs/io_uring.c Hao Xu 2020-11-03 11631 const sigset_t __user *sig;
c73ebb685fb6df fs/io_uring.c Hao Xu 2020-11-03 11632 struct __kernel_timespec __user *ts;
c73ebb685fb6df fs/io_uring.c Hao Xu 2020-11-03 11633
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11634 ret2 = io_get_ext_arg(flags, argp, &argsz, &ts, &sig);
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11635 if (likely(!ret2)) {
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11636 min_complete = min(min_complete,
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11637 ctx->cq_entries);
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11638 ret2 = io_cqring_wait(ctx, min_complete, sig,
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11639 argsz, ts);
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11640 }
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11641 }
c73ebb685fb6df fs/io_uring.c Hao Xu 2020-11-03 11642
155bc9505dbd66 fs/io_uring.c Dylan Yudaken 2022-04-21 11643 if (!ret) {
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11644 ret = ret2;
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11645
32b2244a840a90 fs/io_uring.c Xiaoguang Wang 2020-03-11 11646 /*
155bc9505dbd66 fs/io_uring.c Dylan Yudaken 2022-04-21 11647 * EBADR indicates that one or more CQE were dropped.
155bc9505dbd66 fs/io_uring.c Dylan Yudaken 2022-04-21 11648 * Once the user has been informed we can clear the bit
155bc9505dbd66 fs/io_uring.c Dylan Yudaken 2022-04-21 11649 * as they are obviously ok with those drops.
32b2244a840a90 fs/io_uring.c Xiaoguang Wang 2020-03-11 11650 */
155bc9505dbd66 fs/io_uring.c Dylan Yudaken 2022-04-21 11651 if (unlikely(ret2 == -EBADR))
155bc9505dbd66 fs/io_uring.c Dylan Yudaken 2022-04-21 11652 clear_bit(IO_CHECK_CQ_DROPPED_BIT,
155bc9505dbd66 fs/io_uring.c Dylan Yudaken 2022-04-21 11653 &ctx->check_cq);
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11654 }
def596e9557c91 fs/io_uring.c Jens Axboe 2019-01-09 11655 }
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11656
7c504e65206a43 fs/io_uring.c Pavel Begunkov 2019-12-18 11657 out:
6805b32ec2b089 fs/io_uring.c Pavel Begunkov 2019-10-08 11658 percpu_ref_put(&ctx->refs);
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11659 out_fput:
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11660 fdput(f);
3e813c9026720c fs/io_uring.c Dylan Yudaken 2022-04-21 11661 return ret;
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11662 }
2b188cc1bb857a fs/io_uring.c Jens Axboe 2019-01-07 11663
:::::: The code at line 11529 was first introduced by commit
:::::: 2b188cc1bb857a9d4701ae59aa7768b5124e262e Add io_uring IO interface
:::::: TO: Jens Axboe <axboe@...nel.dk>
:::::: CC: Jens Axboe <axboe@...nel.dk>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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