From mboxrd@z Thu Jan 1 00:00:00 1970 Message-Id: <6.2.5.6.2.20081206001117.01c86878@binnacle.cx> Date: Sat, 06 Dec 2008 00:17:14 -0500 From: starlight@binnacle.cx Subject: Re: [Bug 12134] New: can't shmat() 1GB hugepage segment from second process more than one time Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="=====================_-567485484==_" Sender: owner-linux-mm@kvack.org Return-Path: To: Adam Litke Cc: Andrew Morton , linux-mm@kvack.org, bugme-daemon@bugzilla.kernel.org, Andy Whitcroft , David Gibson List-ID: --=====================_-567485484==_ Content-Type: text/plain; charset="us-ascii" Went back and tried a few things. Finally figured out that the problem can be reproduced with a simple shared memory segment loader utility we have. No threads, no forks, nothing fancy. Just create a segment and read the contents of a big file into it. Two segments actually. The only difference is the accessing program has to be run three times instead of two times to produce the failure. You might be able to accomplish the same result just using 'memset()' to touch all the memory. Then tried this out with the F9 kernel 2.6.26.5-45.fc9.x86_64 and everything worked perfectly. This is all I can do. Have burned way to many hours on it and am now retreating to the warm safety of the RHEL kernel. Only reason I was playing with the kernel.org kernel is we're trying to get an Intel 82575 working with the 'igb' driver in multiple-RX-queue mode and the 'e1000-devel' guys said to use the latest. However that's looking like a total bust, so it's time to retreat, wait for six months and hope it's all working by then with a supported kernel. I've attached the 'strace' files. Don't know where those 'mmap's are coming from except that perhaps in a library somewhere. There are none in our code. Good luck. --=====================_-567485484==_ Content-Type: text/plain; charset="us-ascii" Content-Disposition: attachment; filename="create_seg_strace.txt" execve("load", [""], [/* 43 vars */]) = 0 brk(0) = 0x14cf000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb04edac000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb04edab000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=16678, ...}) = 0 mmap(NULL, 16678, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fb04eda6000 close(3) = 0 open("/lib64/librt.so.1", O_RDONLY) = 3 read(3, ..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=53448, ...}) = 0 mmap(0x3df4000000, 2132944, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3df4000000 mprotect(0x3df4007000, 2097152, PROT_NONE) = 0 mmap(0x3df4207000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7000) = 0x3df4207000 close(3) = 0 open("/w/lib/libstdc++.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200\26\5\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0750, st_size=5121519, ...}) = 0 mmap(NULL, 2127000, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fb04eb9e000 mprotect(0x7fb04ec8a000, 1048576, PROT_NONE) = 0 mmap(0x7fb04ed8a000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xec000) = 0x7fb04ed8a000 mmap(0x7fb04ed93000, 74904, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fb04ed93000 close(3) = 0 open("/lib64/libm.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 >\200\363=\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=619320, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb04eb9d000 mmap(0x3df3800000, 2638024, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3df3800000 mprotect(0x3df3884000, 2093056, PROT_NONE) = 0 mmap(0x3df3a83000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x83000) = 0x3df3a83000 close(3) = 0 open("/w/lib/libgcc_s.so.1", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220(\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0640, st_size=472511, ...}) = 0 mmap(NULL, 1137848, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fb04ea87000 mprotect(0x7fb04ea9d000, 1044480, PROT_NONE) = 0 mmap(0x7fb04eb9c000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0x7fb04eb9c000 close(3) = 0 open("/lib64/libpthread.so.0", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\240W\300\363=\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=143096, ...}) = 0 mmap(0x3df3c00000, 2204496, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3df3c00000 mprotect(0x3df3c16000, 2093056, PROT_NONE) = 0 mmap(0x3df3e15000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0x3df3e15000 mmap(0x3df3e17000, 13136, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3df3e17000 close(3) = 0 open("/lib64/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\344\301\362=\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=1804104, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb04ea86000 mmap(0x3df2c00000, 3584632, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3df2c00000 mprotect(0x3df2d62000, 2097152, PROT_NONE) = 0 mmap(0x3df2f62000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x162000) = 0x3df2f62000 mmap(0x3df2f67000, 17016, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3df2f67000 close(3) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb04ea85000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb04ea84000 arch_prctl(ARCH_SET_FS, 0x7fb04ea84700) = 0 mprotect(0x3df2f62000, 16384, PROT_READ) = 0 mprotect(0x3df3e15000, 4096, PROT_READ) = 0 mprotect(0x3df3a83000, 4096, PROT_READ) = 0 mprotect(0x7fb04ed8a000, 8192, PROT_READ) = 0 mprotect(0x3df4207000, 4096, PROT_READ) = 0 mprotect(0x3df2a1c000, 4096, PROT_READ) = 0 munmap(0x7fb04eda6000, 16678) = 0 set_tid_address(0x7fb04ea84790) = 2788 set_robust_list(0x7fb04ea847a0, 0x18) = 0 futex(0x7fff56daa5ec, FUTEX_WAKE_PRIVATE, 1) = 0 rt_sigaction(SIGRTMIN, {0x3df3c05630, [], SA_RESTORER|SA_SIGINFO, 0x3df3c0ed30}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {0x3df3c056c0, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x3df3c0ed30}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0 futex(0x7fb04ed93c48, FUTEX_WAKE_PRIVATE, 2147483647) = 0 brk(0) = 0x14cf000 brk(0x14f0000) = 0x14f0000 futex(0x524c60, FUTEX_WAKE_PRIVATE, 2147483647) = 0 stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 msgget(0x20342be, 0) = -1 ENOENT (No such file or directory) stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 shmget(0x20342c1, 1073741824, IPC_CREAT|IPC_EXCL|SHM_HUGETLB|0640) = 0 shmat(0, 0x400000000, 0) = ? shmctl(0, IPC_STAT, 0x7fff56daa170) = 0 stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 shmget(0x20342c0, 268435456, IPC_CREAT|IPC_EXCL|SHM_HUGETLB|0640) = 32769 shmat(32769, 0x580000000, 0) = ? shmctl(32769, IPC_STAT, 0x7fff56daa1a0) = 0 stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 msgget(0x20342be, 0) = -1 ENOENT (No such file or directory) open("", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=3519, ...}) = 0 fstat(3, {st_mode=S_IFREG|0644, st_size=3519, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb04edaa000 read(3, ..., 4096) = 3519 lseek(3, -2252, SEEK_CUR) = 1267 read(3, ..., 4096) = 2252 close(3) = 0 munmap(0x7fb04edaa000, 4096) = 0 write(2, ...) = 69 open("", O_RDONLY|O_NOCTTY) = 3 lseek(3, 0, SEEK_END) = 761545448 lseek(3, 0, SEEK_SET) = 0 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 2376424) = 2376424 close(3) = 0 stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 msgget(0x20342be, 0) = -1 ENOENT (No such file or directory) write(2, ...) = 66 stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 msgget(0x20342be, 0) = -1 ENOENT (No such file or directory) write(2, ...) = 67 open("", O_RDONLY|O_NOCTTY) = 3 lseek(3, 0, SEEK_END) = 24186116 lseek(3, 0, SEEK_SET) = 0 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 4194304) = 4194304 read(3, ..., 3214596) = 3214596 close(3) = 0 stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 msgget(0x20342be, 0) = -1 ENOENT (No such file or directory) write(2, ...) = 64 shmdt(0x580000000) = 0 shmdt(0x400000000) = 0 exit_group(0) = ? --=====================_-567485484==_ Content-Type: text/plain; charset="us-ascii" Content-Disposition: attachment; filename="access_seg_strace3.txt" execve("access", ["access"], [/* 43 vars */]) = 0 brk(0) = 0x1e99000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f067e14b000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f067e14a000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=16678, ...}) = 0 mmap(NULL, 16678, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f067e145000 close(3) = 0 open("/w/lib/libstdc++.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200\26\5\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0750, st_size=5121519, ...}) = 0 mmap(NULL, 2127000, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f067df3d000 mprotect(0x7f067e029000, 1048576, PROT_NONE) = 0 mmap(0x7f067e129000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xec000) = 0x7f067e129000 mmap(0x7f067e132000, 74904, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f067e132000 close(3) = 0 open("/lib64/libm.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 >\200\363=\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=619320, ...}) = 0 mmap(0x3df3800000, 2638024, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3df3800000 mprotect(0x3df3884000, 2093056, PROT_NONE) = 0 mmap(0x3df3a83000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x83000) = 0x3df3a83000 close(3) = 0 open("/w/lib/libgcc_s.so.1", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220(\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0640, st_size=472511, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f067df3c000 mmap(NULL, 1137848, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f067de26000 mprotect(0x7f067de3c000, 1044480, PROT_NONE) = 0 mmap(0x7f067df3b000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0x7f067df3b000 close(3) = 0 open("/lib64/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\344\301\362=\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=1804104, ...}) = 0 mmap(0x3df2c00000, 3584632, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3df2c00000 mprotect(0x3df2d62000, 2097152, PROT_NONE) = 0 mmap(0x3df2f62000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x162000) = 0x3df2f62000 mmap(0x3df2f67000, 17016, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3df2f67000 close(3) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f067de25000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f067de24000 arch_prctl(ARCH_SET_FS, 0x7f067de24700) = 0 mprotect(0x3df2f62000, 16384, PROT_READ) = 0 mprotect(0x3df3a83000, 4096, PROT_READ) = 0 mprotect(0x7f067e129000, 8192, PROT_READ) = 0 mprotect(0x3df2a1c000, 4096, PROT_READ) = 0 munmap(0x7f067e145000, 16678) = 0 brk(0) = 0x1e99000 brk(0x1eba000) = 0x1eba000 getpid() = 2802 stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 msgget(0x20342be, 0) = -1 ENOENT (No such file or directory) stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 shmget(0x20342c1, 0, 0) = 0 shmat(0, 0x400000000, SHM_RDONLY) = -1 ENOMEM (Cannot allocate memory) stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 msgget(0x20342be, 0) = -1 ENOENT (No such file or directory) open("", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=3519, ...}) = 0 fstat(3, {st_mode=S_IFREG|0644, st_size=3519, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f067e149000 read(3, ..., 4096) = 3519 lseek(3, -2252, SEEK_CUR) = 1267 read(3, ..., 4096) = 2252 close(3) = 0 munmap(0x7f067e149000, 4096) = 0 write(2, ...) = 83 stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 msgget(0x20342be, 0) = -1 ENOENT (No such file or directory) write(2, ...) = 59 write(2, ...) = 48 write(2, ...) = 24 write(2, "", 2' ) = 2 rt_sigprocmask(SIG_UNBLOCK, [ABRT], NULL, 8) = 0 tgkill(2802, 2802, SIGABRT) = 0 --- SIGABRT (Aborted) @ 0 (0) --- +++ killed by SIGABRT +++ --=====================_-567485484==_ Content-Type: text/plain; charset="us-ascii" Content-Disposition: attachment; filename="access_seg_strace2.txt" execve("access", ["access"], [/* 43 vars */]) = 0 brk(0) = 0xd6c000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f97ab7f6000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f97ab7f5000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=16678, ...}) = 0 mmap(NULL, 16678, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f97ab7f0000 close(3) = 0 open("/w/lib/libstdc++.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200\26\5\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0750, st_size=5121519, ...}) = 0 mmap(NULL, 2127000, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f97ab5e8000 mprotect(0x7f97ab6d4000, 1048576, PROT_NONE) = 0 mmap(0x7f97ab7d4000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xec000) = 0x7f97ab7d4000 mmap(0x7f97ab7dd000, 74904, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f97ab7dd000 close(3) = 0 open("/lib64/libm.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 >\200\363=\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=619320, ...}) = 0 mmap(0x3df3800000, 2638024, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3df3800000 mprotect(0x3df3884000, 2093056, PROT_NONE) = 0 mmap(0x3df3a83000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x83000) = 0x3df3a83000 close(3) = 0 open("/w/lib/libgcc_s.so.1", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220(\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0640, st_size=472511, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f97ab5e7000 mmap(NULL, 1137848, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f97ab4d1000 mprotect(0x7f97ab4e7000, 1044480, PROT_NONE) = 0 mmap(0x7f97ab5e6000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0x7f97ab5e6000 close(3) = 0 open("/lib64/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\344\301\362=\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=1804104, ...}) = 0 mmap(0x3df2c00000, 3584632, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3df2c00000 mprotect(0x3df2d62000, 2097152, PROT_NONE) = 0 mmap(0x3df2f62000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x162000) = 0x3df2f62000 mmap(0x3df2f67000, 17016, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3df2f67000 close(3) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f97ab4d0000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f97ab4cf000 arch_prctl(ARCH_SET_FS, 0x7f97ab4cf700) = 0 mprotect(0x3df2f62000, 16384, PROT_READ) = 0 mprotect(0x3df3a83000, 4096, PROT_READ) = 0 mprotect(0x7f97ab7d4000, 8192, PROT_READ) = 0 mprotect(0x3df2a1c000, 4096, PROT_READ) = 0 munmap(0x7f97ab7f0000, 16678) = 0 brk(0) = 0xd6c000 brk(0xd8d000) = 0xd8d000 getpid() = 2800 stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 msgget(0x20342be, 0) = -1 ENOENT (No such file or directory) stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 shmget(0x20342c1, 0, 0) = 0 shmat(0, 0x400000000, SHM_RDONLY) = ? shmctl(0, IPC_STAT, 0x7fffb37f5cc0) = 0 stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 shmget(0x20342c0, 0, 0) = 32769 shmat(32769, 0x580000000, SHM_RDONLY) = ? shmctl(32769, IPC_STAT, 0x7fffb37f5cc0) = 0 fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f97ab7f4000 shmdt(0x580000000) = 0 shmdt(0x400000000) = 0 exit_group(0) = ? --=====================_-567485484==_ Content-Type: text/plain; charset="us-ascii" Content-Disposition: attachment; filename="access_seg_strace1.txt" execve("access", ["access"], [/* 43 vars */]) = 0 brk(0) = 0x95c000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bbb66c000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bbb66b000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=16678, ...}) = 0 mmap(NULL, 16678, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f1bbb666000 close(3) = 0 open("/w/lib/libstdc++.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200\26\5\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0750, st_size=5121519, ...}) = 0 mmap(NULL, 2127000, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1bbb45e000 mprotect(0x7f1bbb54a000, 1048576, PROT_NONE) = 0 mmap(0x7f1bbb64a000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xec000) = 0x7f1bbb64a000 mmap(0x7f1bbb653000, 74904, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f1bbb653000 close(3) = 0 open("/lib64/libm.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 >\200\363=\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=619320, ...}) = 0 mmap(0x3df3800000, 2638024, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3df3800000 mprotect(0x3df3884000, 2093056, PROT_NONE) = 0 mmap(0x3df3a83000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x83000) = 0x3df3a83000 close(3) = 0 open("/w/lib/libgcc_s.so.1", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220(\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0640, st_size=472511, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bbb45d000 mmap(NULL, 1137848, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1bbb347000 mprotect(0x7f1bbb35d000, 1044480, PROT_NONE) = 0 mmap(0x7f1bbb45c000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0x7f1bbb45c000 close(3) = 0 open("/lib64/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\344\301\362=\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=1804104, ...}) = 0 mmap(0x3df2c00000, 3584632, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3df2c00000 mprotect(0x3df2d62000, 2097152, PROT_NONE) = 0 mmap(0x3df2f62000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x162000) = 0x3df2f62000 mmap(0x3df2f67000, 17016, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3df2f67000 close(3) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bbb346000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bbb345000 arch_prctl(ARCH_SET_FS, 0x7f1bbb345700) = 0 mprotect(0x3df2f62000, 16384, PROT_READ) = 0 mprotect(0x3df3a83000, 4096, PROT_READ) = 0 mprotect(0x7f1bbb64a000, 8192, PROT_READ) = 0 mprotect(0x3df2a1c000, 4096, PROT_READ) = 0 munmap(0x7f1bbb666000, 16678) = 0 brk(0) = 0x95c000 brk(0x97d000) = 0x97d000 getpid() = 2798 stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 msgget(0x20342be, 0) = -1 ENOENT (No such file or directory) stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 shmget(0x20342c1, 0, 0) = 0 shmat(0, 0x400000000, SHM_RDONLY) = ? shmctl(0, IPC_STAT, 0x7fffc366bb40) = 0 stat("", {st_mode=S_IFREG|0640, st_size=0, ...}) = 0 shmget(0x20342c0, 0, 0) = 32769 shmat(32769, 0x580000000, SHM_RDONLY) = ? shmctl(32769, IPC_STAT, 0x7fffc366bb40) = 0 fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bbb66a000 shmdt(0x580000000) = 0 shmdt(0x400000000) = 0 exit_group(0) = ? --=====================_-567485484==_-- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. 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