Messages in this thread | | | Date | Sat, 26 Mar 2022 11:35:50 +0800 | From | kernel test robot <> | Subject | fs/io_uring.c:5879:68: sparse: sparse: incorrect type in initializer (different base types) |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 52d543b5497cf31d6baeb0bcfe5a5474c3238578 commit: 81459350d581e958ee9c6e76031f77333881c23c io_uring: cache req->apoll->events in req->cflags date: 9 days ago config: i386-randconfig-s001 (https://download.01.org/0day-ci/archive/20220326/202203261121.c6ITctBO-lkp@intel.com/config) compiler: gcc-9 (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=81459350d581e958ee9c6e76031f77333881c23c git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 81459350d581e958ee9c6e76031f77333881c23c # save the config file to linux build tree mkdir build_dir make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.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:3389:24: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void [noderef] __user * @@ got struct io_buffer *[assigned] kbuf @@ fs/io_uring.c:3389:24: sparse: expected void [noderef] __user * fs/io_uring.c:3389:24: sparse: got struct io_buffer *[assigned] kbuf fs/io_uring.c:5041:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct file *file @@ got struct file [noderef] __rcu * @@ fs/io_uring.c:5041:14: sparse: expected struct file *file fs/io_uring.c:5041:14: sparse: got struct file [noderef] __rcu * >> fs/io_uring.c:5879:68: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __poll_t [usertype] _key @@ got unsigned int [usertype] cflags @@ fs/io_uring.c:5879:68: sparse: expected restricted __poll_t [usertype] _key fs/io_uring.c:5879:68: sparse: got unsigned int [usertype] cflags fs/io_uring.c:5881:47: sparse: sparse: restricted __poll_t degrades to integer fs/io_uring.c:5885:52: sparse: sparse: restricted __poll_t degrades to integer fs/io_uring.c:5886:71: sparse: sparse: restricted __poll_t degrades to integer fs/io_uring.c:5886:65: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected restricted __poll_t [usertype] val @@ got unsigned int @@ fs/io_uring.c:5886:65: sparse: expected restricted __poll_t [usertype] val fs/io_uring.c:5886:65: sparse: got unsigned int fs/io_uring.c:5886:52: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __poll_t [usertype] mask @@ got unsigned short @@ fs/io_uring.c:5886:52: sparse: expected restricted __poll_t [usertype] mask fs/io_uring.c:5886:52: sparse: got unsigned short fs/io_uring.c:5890:71: 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:5890:71: sparse: expected signed int [usertype] res fs/io_uring.c:5890:71: sparse: got restricted __poll_t [usertype] mask fs/io_uring.c:5921:66: sparse: sparse: restricted __poll_t degrades to integer fs/io_uring.c:5921:55: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected restricted __poll_t [usertype] val @@ got unsigned int @@ fs/io_uring.c:5921:55: sparse: expected restricted __poll_t [usertype] val fs/io_uring.c:5921:55: sparse: got unsigned int fs/io_uring.c:5999:45: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected int events @@ got restricted __poll_t [usertype] events @@ fs/io_uring.c:5999:45: sparse: expected int events fs/io_uring.c:5999:45: sparse: got restricted __poll_t [usertype] events fs/io_uring.c:6030:40: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected int mask @@ got restricted __poll_t [usertype] mask @@ fs/io_uring.c:6030:40: sparse: expected int mask fs/io_uring.c:6030:40: sparse: got restricted __poll_t [usertype] mask fs/io_uring.c:6030:50: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected int events @@ got restricted __poll_t [usertype] events @@ fs/io_uring.c:6030:50: sparse: expected int events fs/io_uring.c:6030:50: sparse: got restricted __poll_t [usertype] events fs/io_uring.c:6117:24: sparse: sparse: incorrect type in return expression (different base types) @@ expected int @@ got restricted __poll_t [assigned] [usertype] mask @@ fs/io_uring.c:6117:24: sparse: expected int fs/io_uring.c:6117:24: sparse: got restricted __poll_t [assigned] [usertype] mask fs/io_uring.c:6134:40: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected int mask @@ got restricted __poll_t [assigned] [usertype] mask @@ fs/io_uring.c:6134:40: sparse: expected int mask fs/io_uring.c:6134:40: sparse: got restricted __poll_t [assigned] [usertype] mask fs/io_uring.c:6134:50: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected int events @@ got restricted __poll_t [usertype] events @@ fs/io_uring.c:6134:50: sparse: expected int events fs/io_uring.c:6134:50: sparse: got restricted __poll_t [usertype] events fs/io_uring.c:6145:47: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected int events @@ got restricted __poll_t [usertype] events @@ fs/io_uring.c:6145:47: sparse: expected int events fs/io_uring.c:6145:47: sparse: got restricted __poll_t [usertype] events fs/io_uring.c:6170:25: sparse: sparse: restricted __poll_t degrades to integer fs/io_uring.c:6170:48: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __poll_t [usertype] mask @@ got unsigned int @@ fs/io_uring.c:6170:48: sparse: expected restricted __poll_t [usertype] mask fs/io_uring.c:6170:48: sparse: got unsigned int fs/io_uring.c:6179:22: sparse: sparse: invalid assignment: |= fs/io_uring.c:6179:22: sparse: left side has type restricted __poll_t fs/io_uring.c:6179:22: sparse: right side has type int fs/io_uring.c:6184:30: sparse: sparse: invalid assignment: &= fs/io_uring.c:6184:30: sparse: left side has type restricted __poll_t fs/io_uring.c:6184:30: sparse: right side has type int fs/io_uring.c:6186:22: sparse: sparse: invalid assignment: |= fs/io_uring.c:6186:22: sparse: left side has type restricted __poll_t fs/io_uring.c:6186:22: sparse: right side has type int fs/io_uring.c:6209:33: sparse: sparse: incorrect type in argument 5 (different base types) @@ expected int mask @@ got restricted __poll_t [usertype] mask @@ fs/io_uring.c:6209:33: sparse: expected int mask fs/io_uring.c:6209:33: sparse: got restricted __poll_t [usertype] mask fs/io_uring.c:6209:50: sparse: sparse: incorrect type in argument 6 (different base types) @@ expected int events @@ got restricted __poll_t [usertype] events @@ fs/io_uring.c:6209:50: sparse: expected int events fs/io_uring.c:6209:50: sparse: got restricted __poll_t [usertype] events fs/io_uring.c:6290:24: sparse: sparse: invalid assignment: |= fs/io_uring.c:6290:24: sparse: left side has type unsigned int fs/io_uring.c:6290:24: sparse: right side has type restricted __poll_t fs/io_uring.c:6291:65: sparse: sparse: restricted __poll_t degrades to integer fs/io_uring.c:6291:29: sparse: sparse: restricted __poll_t degrades to integer fs/io_uring.c:6291:38: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted __poll_t @@ got unsigned int @@ fs/io_uring.c:6291:38: sparse: expected restricted __poll_t fs/io_uring.c:6291:38: sparse: got unsigned int >> fs/io_uring.c:6343:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] cflags @@ got restricted __poll_t [usertype] events @@ fs/io_uring.c:6343:21: sparse: expected unsigned int [usertype] cflags fs/io_uring.c:6343:21: sparse: got restricted __poll_t [usertype] events fs/io_uring.c:6381:43: sparse: sparse: invalid assignment: &= fs/io_uring.c:6381:43: sparse: left side has type restricted __poll_t fs/io_uring.c:6381:43: sparse: right side has type int fs/io_uring.c:6382:62: sparse: sparse: restricted __poll_t degrades to integer fs/io_uring.c:6382:43: sparse: sparse: invalid assignment: |= fs/io_uring.c:6382:43: sparse: left side has type restricted __poll_t fs/io_uring.c:6382:43: sparse: right side has type unsigned int fs/io_uring.c:2406:17: sparse: sparse: context imbalance in 'handle_prev_tw_list' - different lock contexts for basic block fs/io_uring.c:8569:9: sparse: sparse: context imbalance in 'io_sq_thread_unpark' - wrong count at exit fs/io_uring.c:8580:9: sparse: sparse: context imbalance in 'io_sq_thread_park' - wrong count at exit
vim +5879 fs/io_uring.c
5850 5851 /* 5852 * All poll tw should go through this. Checks for poll events, manages 5853 * references, does rewait, etc. 5854 * 5855 * Returns a negative error on failure. >0 when no action require, which is 5856 * either spurious wakeup or multishot CQE is served. 0 when it's done with 5857 * the request, then the mask is stored in req->result. 5858 */ 5859 static int io_poll_check_events(struct io_kiocb *req) 5860 { 5861 struct io_ring_ctx *ctx = req->ctx; 5862 struct io_poll_iocb *poll = io_poll_get_single(req); 5863 int v; 5864 5865 /* req->task == current here, checking PF_EXITING is safe */ 5866 if (unlikely(req->task->flags & PF_EXITING)) 5867 io_poll_mark_cancelled(req); 5868 5869 do { 5870 v = atomic_read(&req->poll_refs); 5871 5872 /* tw handler should be the owner, and so have some references */ 5873 if (WARN_ON_ONCE(!(v & IO_POLL_REF_MASK))) 5874 return 0; 5875 if (v & IO_POLL_CANCEL_FLAG) 5876 return -ECANCELED; 5877 5878 if (!req->result) { > 5879 struct poll_table_struct pt = { ._key = req->cflags }; 5880 5881 req->result = vfs_poll(req->file, &pt) & req->cflags; 5882 } 5883 5884 /* multishot, just fill an CQE and proceed */ 5885 if (req->result && !(req->cflags & EPOLLONESHOT)) { 5886 __poll_t mask = mangle_poll(req->result & poll->events); 5887 bool filled; 5888 5889 spin_lock(&ctx->completion_lock); 5890 filled = io_fill_cqe_aux(ctx, req->user_data, mask, 5891 IORING_CQE_F_MORE); 5892 io_commit_cqring(ctx); 5893 spin_unlock(&ctx->completion_lock); 5894 if (unlikely(!filled)) 5895 return -ECANCELED; 5896 io_cqring_ev_posted(ctx); 5897 io_add_napi(req->file, ctx); 5898 } else if (req->result) { 5899 return 0; 5900 } 5901 5902 /* 5903 * Release all references, retry if someone tried to restart 5904 * task_work while we were executing it. 5905 */ 5906 } while (atomic_sub_return(v & IO_POLL_REF_MASK, &req->poll_refs)); 5907 5908 return 1; 5909 } 5910
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