Date: Sun, 2 Jun 2013 08:16:47 +0900 From: plan9assembler <plan9assembler@...il.com> To: musl@...ts.openwall.com Subject: Re: util-linux-2.23 mount segmentation fault error ah! util-linux umount gets segfault always. On Sun, Jun 2, 2013 at 8:14 AM, plan9assembler <plan9assembler@...il.com>wrote: > Hi, > > latest musl libc seems to fixes mount segfault error partially. > (mount: /mnt: filesystem mounted, but mount(8) failedOperation timed out) > rebuild and test vanilla util-linux-2.23 result same. > tested util-linux-2.23.1 same. > tested gcc-4.8.1 same. > > sscanf "%ms" -> "%s" with malloc doesn't fixed the issue here. > with patch or without it result same. > > i compile strace-4.7 to trace the bug, but get some build error: > gcc -Wall -Wwrite-string -g -O2 -o strace strace.o syscall.o count.o > util.o desc.o file.o ipc.o io.o ioctl.o mem.o net.o process.o bjm.o quota.o > resource.o signal.o sock.o system.o term.o time.o scsi.o stream.o block.o > pathtrace.o mtd.o vsprintf.o loop.o > syscall.o:(.rodata+0x28080): undefined reference to `sys_getdents64' > syscall.o:(.rodata+0x2b100): undefined reference to `sys_truncate64' > syscall.o:(.rodata+0x2b118): undefined reference to `sys_ftruncate64' > syscall.o:(.rodata+0x2b388): undefined reference to `sys_getdents64' > syscall.o:(.rodata+0x2dd00): undefined reference to `sys_getdents64' > > BTW, i was quite surprised by base packages are so much "glibc-centric".. > > > > On Thu, May 30, 2013 at 5:37 PM, Szabolcs Nagy <nsz@...t70.net> wrote: > >> * plan9assembler <plan9assembler@...il.com> [2013-05-30 16:26:13 +0900]: >> > >> > it still gets same segfaults, same bt gdb result. >> > >> >> if you get the exact same segfault then you do something wrong >> ..or malloc(200) is not enough >> >> > and it is clear to me that latest musl libc[2013/05/29] contain new bug, >> > because, >> > below abnormal operation never happened before. (musl version git >> pulled at >> > 2013/05/03) >> > >> > # ./mount /dev/sda1 /mnt >> > EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null) >> > >> > < 30 - 40 seconds waiting without return to shell> >> > >> > mount: /mnt: filesystem mounted, but mount(8) failedOperation timed out >> > // <-- this is weird. >> > # >> >> works here fine >> since you have local modifications i'd check those first >> >> i doubt that latest musl has any related bug >> >> but you could easily prove me wrong with a strace >> that shows bad flags passed to some syscall >> >> > Content of type "text/html" skipped
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