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...ccess the value just tested by IS_ERR Semantic patch information: There can be false positives in the patch case, where it is the call to IS_ERR that is wrong. Generated by: scripts/coccinelle/tests/odd_ptr_err.cocci Fixes: 920d2b5ef215 ("drm/nouveau/mmu: define user interfaces to mmu vmm opertaions") Signed-off-by: Fengguang Wu <fengguang.wu at intel.com> --- Please take the patch only if it's a positive warning. Thanks! uvmm.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c +++ b/drivers/gpu/drm/nouveau/nv...

Does anyone has any ideas about this problem? 2008/1/15, ?? TaoJie <eulertao at gmail.com>: > > Hi all: > > I''m working on revealing system performance now. > My testing program is an infinite loop. Inside the loop, it will do some > mathematical opertaions and call function callee(), then go to the next > loop. > I install a alarm(30) in the program. It means it will stop after running > 30 seconds. > Before calling alarm(30), at the beginning of the main body, it will use > libkstat to read kstat-cpu-sys record first. > After the...

...so it should serve the purpose that the author presumably had in mind. Alternatively we could just get rid of it completely and simplify the code at the cost of always doing the kmalloc (as we do in the current version). Fixes: 920d2b5ef215 ("drm/nouveau/mmu: define user interfaces to mmu vmm opertaions") Signed-off-by: Arnd Bergmann <arnd at arndb.de> --- Cc: Martin Sebor <msebor at gcc.gnu.org> Martin: this one is interesting, I think it qualifies as a false-positive warning that gcc should not print because there is no overflow, but the code is still wrong because we never co...

...> > Semantic patch information: > There can be false positives in the patch case, where it is the call to > IS_ERR that is wrong. > > Generated by: scripts/coccinelle/tests/odd_ptr_err.cocci > > Fixes: 920d2b5ef215 ("drm/nouveau/mmu: define user interfaces to mmu vmm opertaions") > Signed-off-by: Fengguang Wu <fengguang.wu at intel.com> > --- > > Please take the patch only if it's a positive warning. Thanks! > > uvmm.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > --- a/drivers/gpu/drm/nouveau/nvkm/subdev/m...