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Mon, 17 Nov 2025 09:42:17 -0800 (PST) Date: Mon, 17 Nov 2025 09:42:17 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <691b5e79.a70a0220.3124cb.00a6.GAE@google.com> Subject: [moderation/CI] Re: uaccess: Prepare for masked user access on powerpc From: syzbot ci To: syzkaller-upstream-moderation@googlegroups.com Cc: syzbot@lists.linux.dev Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable syzbot ci has tested the following series [v5] uaccess: Prepare for masked user access on powerpc https://lore.kernel.org/all/cover.1763396724.git.christophe.leroy@csgroup.e= u * [PATCH v5 1/4] iov_iter: Convert copy_from_user_iter() to masked user acc= ess * [PATCH v5 2/4] iov_iter: Add missing speculation barrier to copy_from_use= r_iter() * [PATCH v5 3/4] scm: Convert put_cmsg() to scoped user access * [PATCH v5 4/4] lib/strn*,uaccess: Use masked_user_{read/write}_access_beg= in when required and found the following issue: kernel build error Full report is available here: https://ci.syzbot.org/series/771de1b6-9b18-4cc1-b1ba-006b1799d4b5 *** kernel build error tree: net-next URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/= net-next.git base: c99ebb6132595b4b288a413981197eb076547c5a arch: amd64 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp= 1~20250708183702.136), Debian LLD 20.1.8 config: https://ci.syzbot.org/builds/f324fa8a-207c-4830-8eec-90b212598e3= 8/config net/core/scm.c:276:3: error: call to undeclared function 'scoped_user_write= _access_size'; ISO C99 and later do not support implicit function declarati= ons [-Wimplicit-function-declaration] net/core/scm.c:276:51: error: expected ';' after expression net/core/scm.c:276:44: error: use of undeclared identifier 'efault' lib/strncpy_from_user.c:129:9: error: call to undeclared function 'masked_u= ser_read_access_begin'; ISO C99 and later do not support implicit function = declarations [-Wimplicit-function-declaration] lib/strncpy_from_user.c:129:7: error: incompatible integer to pointer conve= rsion assigning to 'const char *' from 'int' [-Wint-conversion] lib/strnlen_user.c:102:9: error: call to undeclared function 'masked_user_r= ead_access_begin'; ISO C99 and later do not support implicit function decla= rations [-Wimplicit-function-declaration] lib/strnlen_user.c:102:7: error: incompatible integer to pointer conversion= assigning to 'const char *' from 'int' [-Wint-conversion] *** If these findings have caused you to resend the series or submit a separate fix, please add the following tag to your commit message: Tested-by: syzbot@syzkaller.appspotmail.com --- This report is generated by a bot. It may contain errors. syzbot ci engineers can be reached at syzkaller@googlegroups.com. The email will later be sent to: [akpm@linux-foundation.org andrealmeid@igalia.com brauner@kernel.org christ= ophe.leroy@csgroup.eu daniel@iogearbox.net dave.hansen@linux.intel.com dave= @stgolabs.net davem@davemloft.net dvhart@infradead.org edumazet@google.com = horms@kernel.org jack@suse.cz kuba@kernel.org kuniyu@google.com linux-block= @vger.kernel.org linux-fsdevel@vger.kernel.org linux-kernel@vger.kernel.org= linuxppc-dev@lists.ozlabs.org maddy@linux.ibm.com mingo@redhat.com mpe@ell= erman.id.au netdev@vger.kernel.org npiggin@gmail.com pabeni@redhat.com pete= rz@infradead.org tglx@linutronix.de viro@zeniv.linux.org.uk willemb@google.= com] If the report looks fine to you, reply with: #syz upstream