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Date: Sat, 3 Oct 2020 09:06:50 +0800
From: Static Php <phpstatic.com@...il.com>
To: musl@...ts.openwall.com
Subject: runtime error: initgroups(www-data, 33) failed (5: I/O error)
I has this runtime error on Ubuntu 18.04.5 LTS, CPU is AMD EPYC Processor.
Kernel: 5.4.0-49-generic #53~18.04.1-Ubuntu (other kernel also has this
problem)
more details: https://github.com/richfelker/musl-cross-make/issues/107
strace:
execve("./a.out", ["./a.out"], 0x7fff12cd26d0 /* 20 vars */) = 0
>
> arch_prctl(ARCH_SET_FS, 0x7ff53bb3b618) = 0
>
> set_tid_address(0x7ff53bb3bbe8) = 40778
>
> socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0) = 3
>
> brk(NULL) = 0x555556f23000
>
> brk(0x555556f25000) = 0x555556f25000
>
> mmap(0x555556f23000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS,
> -1, 0) = 0x555556f23000
>
> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
> 0x7ff53bb39000
>
> connect(3, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 24) = 0
>
> sendmsg(3, {msg_name=NULL, msg_namelen=0,
> msg_iov=[{iov_base="\2\0\0\0\17\0\0\0\t\0\0\0", iov_len=12},
> {iov_base="www-data\0", iov_len=9}], msg_iovlen=2, msg_controllen=0,
> msg_flags=0}, MSG_NOSIGNAL) = 21
>
> readv(3, [{iov_base="\2\0\0\0\1\0\0\0\0\0\0", iov_len=11}, {iov_base="\0",
> iov_len=1024}], 2) = 12
>
> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
> 0x7ff53bb38000
>
> close(3) = 0
>
> munmap(0x7ff53bb39000, 4096) = 0
>
> munmap(0x7ff53bb38000, 4096) = 0
>
> ioctl(1, TIOCGWINSZ, {ws_row=59, ws_col=225, ws_xpixel=1575,
> ws_ypixel=826}) = 0
>
> writev(1, [{iov_base="err=-1, errno=5", iov_len=15}, {iov_base="\n",
> iov_len=1}], 2err=-1, errno=5
>
> ) = 16
>
> exit_group(0) = ?
>
> +++ exited with 0 +++
>
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