On Tue, Jan 19, 2021 at 01:29:16PM -0800, Nick Desaulniers wrote: > On Mon, Jan 18, 2021 at 9:23 AM Josh Poimboeuf <jpoim...@redhat.com> wrote: > > > > On Thu, Jan 14, 2021 at 04:41:28PM -0800, Sami Tolvanen wrote: > > > I can confirm that all the warnings I previously saw are now fixed, > > > but I'm seeing a few new ones: > > > > > > vmlinux.o: warning: objtool: balance_leaf_when_delete()+0x17d4: stack > > > state mismatch: cfa1=7+192 cfa2=7+176 > > > vmlinux.o: warning: objtool: internal_move_pointers_items()+0x9f7: stack > > > state mismatch: cfa1=7+160 cfa2=7+176 > > > > These seem legit stack state mismatches (compiler bug). Two code > > blocks, with different stack sizes, transfer control to the same > > noreturn block (violating DWARF/ORC expectation that each instruction > > has a deterministic stack layout). In both cases the noreturn block has > > a call to __reiserfs_panic(). > > > > https://paste.centos.org/view/081cbfc1 > > https://paste.centos.org/view/265968a6 > > > > Sorry, I think all of the pastes linked here expired before I had a > chance to grab them.
Attached, balance_leaf_when_delete.txt and internal_move_pointers_items.txt. > > > vmlinux.o: warning: objtool: strncpy_from_user()+0x181: call to > > > do_strncpy_from_user() with UACCESS enabled > > > vmlinux.o: warning: objtool: strnlen_user()+0x12b: call to > > > do_strnlen_user() with UACCESS enabled > > > > It's odd that Clang wouldn't inline these static single-called > > functions. I could '__always_inline' them, but is this expected > > behavior? > > > > > vmlinux.o: warning: objtool: i915_gem_execbuffer2_ioctl()+0x390: call to > > > __ubsan_handle_negate_overflow() with UACCESS enabled > > > > PeterZ, have you seen this one? > > > > https://paste.centos.org/view/b4723113 Attached, i915_gem_execbuffer2_ioctl.txt. > > > > > vmlinux.o: warning: objtool: .text.snd_trident_free_voice: unexpected end > > > of section > > > > Another weird compiler issue. It generates obviously dead code which > > jumps off the end of the function: > > > > f7: b0 01 mov $0x1,%al > > f9: 84 c0 test %al,%al > > fb: 0f 84 79 05 00 00 je 67a <snd_trident_free_voice+0x67a> > > > > https://paste.centos.org/view/a1887ae3 Attached, snd_trident_free_voice.txt. -- Josh
warnings.tar.xz
Description: application/xz
