CC: kbuild-...@lists.01.org CC: linux-ker...@vger.kernel.org TO: Jason Gunthorpe <j...@mellanox.com> CC: Leon Romanovsky <leo...@mellanox.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 35e884f89df4c48566d745dc5a97a0d058d04263 commit: a1d8854aae4ee19df6161a276a99d3c9c2abc4f3 RDMA/mlx5: Fix MR cache size and limit debugfs date: 4 months ago :::::: branch date: 16 hours ago :::::: commit date: 4 months ago config: i386-randconfig-s001-20200705 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-3-gfa153962-dirty git checkout a1d8854aae4ee19df6161a276a99d3c9c2abc4f3 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> sparse warnings: (new ones prefixed by >>) >> drivers/infiniband/hw/mlx5/mr.c:234:25: sparse: sparse: context imbalance in >> 'resize_available_mrs' - unexpected unlock # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a1d8854aae4ee19df6161a276a99d3c9c2abc4f3 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git remote update linus git checkout a1d8854aae4ee19df6161a276a99d3c9c2abc4f3 vim +/resize_available_mrs +234 drivers/infiniband/hw/mlx5/mr.c 65edd0e758b8a2 Daniel Jurgens 2018-03-13 220 a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 221 static int resize_available_mrs(struct mlx5_cache_ent *ent, unsigned int target, a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 222 bool limit_fill) a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 223 { a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 224 int err; a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 225 a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 226 lockdep_assert_held(&ent->lock); a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 227 a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 228 while (true) { a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 229 if (limit_fill) a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 230 target = ent->limit * 2; a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 231 if (target == ent->available_mrs + ent->pending) a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 232 return 0; a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 233 if (target > ent->available_mrs + ent->pending) { a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 @234 u32 todo = target - (ent->available_mrs + ent->pending); a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 235 a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 236 spin_unlock_irq(&ent->lock); a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 237 err = add_keys(ent, todo); a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 238 if (err == -EAGAIN) a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 239 usleep_range(3000, 5000); a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 240 spin_lock_irq(&ent->lock); a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 241 if (err) { a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 242 if (err != -EAGAIN) a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 243 return err; a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 244 } else a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 245 return 0; a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 246 } else { a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 247 spin_unlock_irq(&ent->lock); a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 248 remove_cache_mr(ent); a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 249 spin_lock_irq(&ent->lock); a1d8854aae4ee1 Jason Gunthorpe 2020-03-10 250 } e126ba97dba9ed Eli Cohen 2013-07-07 251 } e126ba97dba9ed Eli Cohen 2013-07-07 252 } e126ba97dba9ed Eli Cohen 2013-07-07 253 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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