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Date: Sat, 16 Apr 2022 18:35:58 +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: fs/io_uring.c:5856:68: sparse: sparse: incorrect type in initializer
(different base types)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 59250f8a7f3a60a2661b84cbafc1e0eb5d05ec9b
commit: 2804ecd8d3e3730b4f999cc1ff4b2441e1f4d513 io_uring: move apoll->events cache
date: 4 days ago
config: arm-randconfig-s031-20220414 (https://download.01.org/0day-ci/archive/20220416/202204161835.i9zZy7KL-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
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-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2804ecd8d3e3730b4f999cc1ff4b2441e1f4d513
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 2804ecd8d3e3730b4f999cc1ff4b2441e1f4d513
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
sparse warnings: (new ones prefixed by >>)
fs/io_uring.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, include/trace/events/io_uring.h):
include/trace/events/io_uring.h:488:1: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] op_flags @@ got restricted __kernel_rwf_t const [usertype] rw_flags @@
include/trace/events/io_uring.h:488:1: sparse: expected unsigned int [usertype] op_flags
include/trace/events/io_uring.h:488:1: sparse: got restricted __kernel_rwf_t const [usertype] rw_flags
fs/io_uring.c: note: in included file (through include/trace/perf.h, include/trace/define_trace.h, include/trace/events/io_uring.h):
include/trace/events/io_uring.h:488:1: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] op_flags @@ got restricted __kernel_rwf_t const [usertype] rw_flags @@
include/trace/events/io_uring.h:488:1: sparse: expected unsigned int [usertype] op_flags
include/trace/events/io_uring.h:488:1: sparse: got restricted __kernel_rwf_t const [usertype] rw_flags
fs/io_uring.c:3161:23: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] flags @@ got restricted __kernel_rwf_t @@
fs/io_uring.c:3161:23: sparse: expected unsigned int [usertype] flags
fs/io_uring.c:3161:23: sparse: got restricted __kernel_rwf_t
fs/io_uring.c:3379:24: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void [noderef] __user * @@ got struct io_buffer *[assigned] kbuf @@
fs/io_uring.c:3379:24: sparse: expected void [noderef] __user *
fs/io_uring.c:3379:24: sparse: got struct io_buffer *[assigned] kbuf
fs/io_uring.c:3766:48: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected restricted __kernel_rwf_t [usertype] flags @@ got unsigned int [usertype] flags @@
fs/io_uring.c:3766:48: sparse: expected restricted __kernel_rwf_t [usertype] flags
fs/io_uring.c:3766:48: sparse: got unsigned int [usertype] flags
fs/io_uring.c:5091:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct file *file @@ got struct file [noderef] __rcu * @@
fs/io_uring.c:5091:14: sparse: expected struct file *file
fs/io_uring.c:5091:14: sparse: got struct file [noderef] __rcu *
>> fs/io_uring.c:5856:68: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __poll_t [usertype] _key @@ got int apoll_events @@
fs/io_uring.c:5856:68: sparse: expected restricted __poll_t [usertype] _key
fs/io_uring.c:5856:68: sparse: got int apoll_events
fs/io_uring.c:5861:55: sparse: sparse: restricted __poll_t degrades to integer
fs/io_uring.c:5865:58: sparse: sparse: restricted __poll_t degrades to integer
fs/io_uring.c:5866:65: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected restricted __poll_t [usertype] val @@ got unsigned int @@
fs/io_uring.c:5866:65: sparse: expected restricted __poll_t [usertype] val
fs/io_uring.c:5866:65: sparse: got unsigned int
fs/io_uring.c:5866:52: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __poll_t [usertype] mask @@ got unsigned short @@
fs/io_uring.c:5866:52: sparse: expected restricted __poll_t [usertype] mask
fs/io_uring.c:5866:52: sparse: got unsigned short
fs/io_uring.c:5870:71: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected signed int [usertype] res @@ got restricted __poll_t [usertype] mask @@
fs/io_uring.c:5870:71: sparse: expected signed int [usertype] res
fs/io_uring.c:5870:71: sparse: got restricted __poll_t [usertype] mask
fs/io_uring.c:5900:66: sparse: sparse: restricted __poll_t degrades to integer
fs/io_uring.c:5900:55: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected restricted __poll_t [usertype] val @@ got unsigned int @@
fs/io_uring.c:5900:55: sparse: expected restricted __poll_t [usertype] val
fs/io_uring.c:5900:55: sparse: got unsigned int
fs/io_uring.c:5981:45: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected int events @@ got restricted __poll_t [usertype] events @@
fs/io_uring.c:5981:45: sparse: expected int events
fs/io_uring.c:5981:45: sparse: got restricted __poll_t [usertype] events
fs/io_uring.c:6016:40: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected int mask @@ got restricted __poll_t [usertype] mask @@
fs/io_uring.c:6016:40: sparse: expected int mask
fs/io_uring.c:6016:40: sparse: got restricted __poll_t [usertype] mask
fs/io_uring.c:6016:50: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected int events @@ got restricted __poll_t [usertype] events @@
fs/io_uring.c:6016:50: sparse: expected int events
fs/io_uring.c:6016:50: sparse: got restricted __poll_t [usertype] events
fs/io_uring.c:6107:24: sparse: sparse: incorrect type in return expression (different base types) @@ expected int @@ got restricted __poll_t [assigned] [usertype] mask @@
fs/io_uring.c:6107:24: sparse: expected int
fs/io_uring.c:6107:24: sparse: got restricted __poll_t [assigned] [usertype] mask
fs/io_uring.c:6124:40: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected int mask @@ got restricted __poll_t [assigned] [usertype] mask @@
fs/io_uring.c:6124:40: sparse: expected int mask
fs/io_uring.c:6124:40: sparse: got restricted __poll_t [assigned] [usertype] mask
fs/io_uring.c:6124:50: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected int events @@ got restricted __poll_t [usertype] events @@
fs/io_uring.c:6124:50: sparse: expected int events
fs/io_uring.c:6124:50: sparse: got restricted __poll_t [usertype] events
fs/io_uring.c:6134:47: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected int events @@ got restricted __poll_t [usertype] events @@
fs/io_uring.c:6134:47: sparse: expected int events
fs/io_uring.c:6134:47: sparse: got restricted __poll_t [usertype] events
fs/io_uring.c:6159:25: sparse: sparse: restricted __poll_t degrades to integer
fs/io_uring.c:6159:48: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __poll_t [usertype] mask @@ got unsigned int @@
fs/io_uring.c:6159:48: sparse: expected restricted __poll_t [usertype] mask
fs/io_uring.c:6159:48: sparse: got unsigned int
fs/io_uring.c:6168:22: sparse: sparse: invalid assignment: |=
fs/io_uring.c:6168:22: sparse: left side has type restricted __poll_t
fs/io_uring.c:6168:22: sparse: right side has type int
fs/io_uring.c:6173:30: sparse: sparse: invalid assignment: &=
fs/io_uring.c:6173:30: sparse: left side has type restricted __poll_t
fs/io_uring.c:6173:30: sparse: right side has type int
fs/io_uring.c:6175:22: sparse: sparse: invalid assignment: |=
fs/io_uring.c:6175:22: sparse: left side has type restricted __poll_t
fs/io_uring.c:6175:22: sparse: right side has type int
fs/io_uring.c:6201:33: sparse: sparse: incorrect type in argument 5 (different base types) @@ expected int mask @@ got restricted __poll_t [assigned] [usertype] mask @@
fs/io_uring.c:6201:33: sparse: expected int mask
fs/io_uring.c:6201:33: sparse: got restricted __poll_t [assigned] [usertype] mask
fs/io_uring.c:6201:50: sparse: sparse: incorrect type in argument 6 (different base types) @@ expected int events @@ got restricted __poll_t [usertype] events @@
fs/io_uring.c:6201:50: sparse: expected int events
fs/io_uring.c:6201:50: sparse: got restricted __poll_t [usertype] events
fs/io_uring.c:6283:24: sparse: sparse: invalid assignment: |=
fs/io_uring.c:6283:24: sparse: left side has type unsigned int
fs/io_uring.c:6283:24: sparse: right side has type restricted __poll_t
fs/io_uring.c:6284:65: sparse: sparse: restricted __poll_t degrades to integer
fs/io_uring.c:6284:29: sparse: sparse: restricted __poll_t degrades to integer
fs/io_uring.c:6284:38: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted __poll_t @@ got unsigned int @@
fs/io_uring.c:6284:38: sparse: expected restricted __poll_t
fs/io_uring.c:6284:38: sparse: got unsigned int
>> fs/io_uring.c:6336:27: sparse: sparse: incorrect type in assignment (different base types) @@ expected int apoll_events @@ got restricted __poll_t [usertype] events @@
fs/io_uring.c:6336:27: sparse: expected int apoll_events
fs/io_uring.c:6336:27: sparse: got restricted __poll_t [usertype] events
fs/io_uring.c:6374:43: sparse: sparse: invalid assignment: &=
fs/io_uring.c:6374:43: sparse: left side has type restricted __poll_t
fs/io_uring.c:6374:43: sparse: right side has type int
fs/io_uring.c:6375:62: sparse: sparse: restricted __poll_t degrades to integer
fs/io_uring.c:6375:43: sparse: sparse: invalid assignment: |=
fs/io_uring.c:6375:43: sparse: left side has type restricted __poll_t
fs/io_uring.c:6375:43: sparse: right side has type unsigned int
fs/io_uring.c:2412:17: sparse: sparse: context imbalance in 'handle_prev_tw_list' - different lock contexts for basic block
fs/io_uring.c:7382:39: sparse: sparse: marked inline, but without a definition
fs/io_uring.c:7382:39: sparse: sparse: marked inline, but without a definition
fs/io_uring.c:7382:39: sparse: sparse: marked inline, but without a definition
vim +5856 fs/io_uring.c
5828
5829 /*
5830 * All poll tw should go through this. Checks for poll events, manages
5831 * references, does rewait, etc.
5832 *
5833 * Returns a negative error on failure. >0 when no action require, which is
5834 * either spurious wakeup or multishot CQE is served. 0 when it's done with
5835 * the request, then the mask is stored in req->result.
5836 */
5837 static int io_poll_check_events(struct io_kiocb *req, bool locked)
5838 {
5839 struct io_ring_ctx *ctx = req->ctx;
5840 int v;
5841
5842 /* req->task == current here, checking PF_EXITING is safe */
5843 if (unlikely(req->task->flags & PF_EXITING))
5844 io_poll_mark_cancelled(req);
5845
5846 do {
5847 v = atomic_read(&req->poll_refs);
5848
5849 /* tw handler should be the owner, and so have some references */
5850 if (WARN_ON_ONCE(!(v & IO_POLL_REF_MASK)))
5851 return 0;
5852 if (v & IO_POLL_CANCEL_FLAG)
5853 return -ECANCELED;
5854
5855 if (!req->result) {
> 5856 struct poll_table_struct pt = { ._key = req->apoll_events };
5857
5858 if (unlikely(!io_assign_file(req, IO_URING_F_UNLOCKED)))
5859 req->result = -EBADF;
5860 else
5861 req->result = vfs_poll(req->file, &pt) & req->apoll_events;
5862 }
5863
5864 /* multishot, just fill an CQE and proceed */
5865 if (req->result && !(req->apoll_events & EPOLLONESHOT)) {
5866 __poll_t mask = mangle_poll(req->result & req->apoll_events);
5867 bool filled;
5868
5869 spin_lock(&ctx->completion_lock);
5870 filled = io_fill_cqe_aux(ctx, req->user_data, mask,
5871 IORING_CQE_F_MORE);
5872 io_commit_cqring(ctx);
5873 spin_unlock(&ctx->completion_lock);
5874 if (unlikely(!filled))
5875 return -ECANCELED;
5876 io_cqring_ev_posted(ctx);
5877 } else if (req->result) {
5878 return 0;
5879 }
5880
5881 /*
5882 * Release all references, retry if someone tried to restart
5883 * task_work while we were executing it.
5884 */
5885 } while (atomic_sub_return(v & IO_POLL_REF_MASK, &req->poll_refs));
5886
5887 return 1;
5888 }
5889
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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