Messages in this thread | | | Date | Wed, 22 Jun 2022 03:34:00 +0800 | From | kernel test robot <> | Subject | [ammarfaizi2-block:dhowells/linux-fs/rxrpc-multiqueue 3/5] fs/afs/rxrpc.c:155:6: warning: variable 'o' is used uninitialized whenever 'if' condition is false |
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tree: https://github.com/ammarfaizi2/linux-block dhowells/linux-fs/rxrpc-multiqueue head: f37988fef6da3fdc3545e5a65eb9241f82f539f2 commit: 928631b5285b0aaebed61025256868cd126c9281 [3/5] rxrpc: Allow UDP socket sharing for AF_RXRPC service sockets config: i386-randconfig-a015 (https://download.01.org/0day-ci/archive/20220622/202206220318.jPFg84u7-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project af6d2a0b6825e71965f3e2701a63c239fa0ad70f) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/ammarfaizi2/linux-block/commit/928631b5285b0aaebed61025256868cd126c9281 git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block dhowells/linux-fs/rxrpc-multiqueue git checkout 928631b5285b0aaebed61025256868cd126c9281 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash fs/afs/
If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> fs/afs/rxrpc.c:155:6: warning: variable 'o' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] if (!prealloc) ^~~~~~~~~ fs/afs/rxrpc.c:157:48: note: uninitialized use occurs here trace_afs_call(call, afs_call_trace_alloc, 1, o, ^ fs/afs/rxrpc.c:155:2: note: remove the 'if' if its condition is always true if (!prealloc) ^~~~~~~~~~~~~~ fs/afs/rxrpc.c:140:7: note: initialize the variable 'o' to silence this warning int o; ^ = 0 1 warning generated.
vim +155 fs/afs/rxrpc.c
131 132 /* 133 * Allocate a call. 134 */ 135 static struct afs_call *afs_alloc_call(struct afs_net *net, 136 const struct afs_call_type *type, 137 bool prealloc, gfp_t gfp) 138 { 139 struct afs_call *call; 140 int o; 141 142 call = kzalloc(sizeof(*call), gfp); 143 if (!call) 144 return NULL; 145 146 call->type = type; 147 call->net = net; 148 call->debug_id = atomic_inc_return(&rxrpc_debug_id); 149 atomic_set(&call->usage, 1); 150 INIT_WORK(&call->async_work, afs_process_async_call); 151 init_waitqueue_head(&call->waitq); 152 spin_lock_init(&call->state_lock); 153 call->iter = &call->def_iter; 154 > 155 if (!prealloc) 156 o = atomic_inc_return(&net->nr_outstanding_calls); 157 trace_afs_call(call, afs_call_trace_alloc, 1, o, 158 __builtin_return_address(0)); 159 return call; 160 } 161
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