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Tue, 25 Jul 2023 01:02:56 -0700 (PDT) Date: Tue, 25 Jul 2023 01:02:56 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000a33bfc06014b28c9@google.com> Subject: [syzbot] panic: runtime error: floating point error (2) From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 46670259519f Merge tag 'for-6.5-rc2-tag' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10b2e452a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=a4507c291b5ab5d4 dashboard link: https://syzkaller.appspot.com/bug?extid=a76d93c00034a9fd23f5 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13213daea80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/f3b4b06a5f02/disk-46670259.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/4db334f36495/vmlinux-46670259.xz kernel image: https://storage.googleapis.com/syzbot-assets/5977e704aeb2/bzImage-46670259.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a76d93c00034a9fd23f5@syzkaller.appspotmail.com 2023/07/21 06:55:36 executed programs: 1794 2023/07/21 06:55:42 executed programs: 1851 2023/07/21 06:55:47 executed programs: 1914 2023/07/21 06:55:52 executed programs: 1976 2023/07/21 06:55:57 executed programs: 2046 panic: runtime error: floating point error [signal SIGFPE: floating-point exception code=0x80 addr=0x0 pc=0x561291] goroutine 22 [running]: github.com/google/syzkaller/prog.ArgCommon.Type(...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:61 github.com/google/syzkaller/prog.(*ConstArg).Size(0xc9f428?) /syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:79 +0x91 github.com/google/syzkaller/prog.foreachArgImpl({0xc9f4a8?, 0xc000fdba80?}, 0xc000873e80, 0xc00107fbb8) /syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:152 +0x3ca github.com/google/syzkaller/prog.foreachArgImpl({0xc9f4e8?, 0xc00008aae0?}, 0xc000873e80, 0xc00107fbb8) /syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:168 +0x2ce github.com/google/syzkaller/prog.ForeachArg(0xc00028eb90, 0x46734e?) /syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:127 +0xde github.com/google/syzkaller/prog.(*Prog).FallbackSignal(0xc001018b00, {0xc00086d180, 0x8, 0x0?}) /syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:249 +0x275 github.com/google/syzkaller/pkg/ipc.addFallbackSignal(0xc0005001c0?, 0xc000857bc0) /syzkaller/gopath/src/github.com/google/syzkaller/pkg/ipc/ipc.go:321 +0x146 github.com/google/syzkaller/pkg/ipc.(*Env).Exec(0xc00027c630, 0x0?, 0xc001018b00) /syzkaller/gopath/src/github.com/google/syzkaller/pkg/ipc/ipc.go:295 +0x359 main.(*Context).execute(0xc0005000e0, 0x0?, 0x0?, 0x0?) /syzkaller/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:171 +0x146 main.(*Context).run(0xc0005000e0, 0x0?) /syzkaller/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:156 +0xc5 main.main.func3() /syzkaller/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:119 +0x5c created by main.main /syzkaller/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:117 +0x588 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup