this today from realtek. Haven't had a chance to test it yet. I don't quite understand the email message & don't have time to crash my laptop today trying to fix this, maybe someone else can give it a go?
-------- Forwarded Message -------- From: roger_liang <roger_li...@realtek.com> To: matt.pr...@utoronto.ca Subject: RE: rtl8192se_pci linux driver bug Date: Mon, 5 Jul 2010 16:46:52 +0800 Dear Sir, We have fixed powertop crash issue. Please find the latest RTL8191SE driver source in the attachment. But we think this isn't our driver issue. Powertop tool can't be used for all vendor device. Its private IO control just can use for IPW cards like ipw3946 and so on. RTL8191SE Linux driver power save mode is default open under DC mode. There is no need to open power save mode by powertop. Thanks. Best Regards, Roger_Liang Realtek Semiconductor Corp. -----Original Message----- From: matt.pr...@utoronto.ca [mailto:matt.pr...@utoronto.ca] Sent: Sunday, July 04, 2010 12:48 AM To: Roger Liang Subject: RE: rtl8192se_pci linux driver bug Dear Roger, I have refined my error a little bit using strace. I now find that the crash is actually triggered by the command: iwpriv -a when run as root. Here is the output of strace -f powertop (attached), and also the crash message when running the command. I have copied my latest post from the ubuntu bug report (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/585938) i was able to get an strace from powrtop (loo\gging in by ssh from a scrr\een session on a remote computer) and attach the log here. it looks like the issue is triggered by "iwpriv -a" -- here's what looks like the relevant part of the log (at the end): [pid 2077] execve("/bin/sh", ["sh", "-c", "/sbin/iwpriv -a 2> /dev/null"], [/* 19 vars */] <unfinished ...> [pid 2064] mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f884e1ea000 [pid 2064] read(4, <unfinished ...> [pid 2077] <... execve resumed> ) = 0 [pid 2077] brk(0) = 0x2590000 [pid 2077] access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) [pid 2077] mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5d2ef07000 [pid 2077] access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) [pid 2077] open("/etc/ld.so.cache", O_RDONLY) = 4 [pid 2077] fstat(4, {st_mode=S_IFREG|0644, st_size=131558, ...}) = 0 [pid 2077] mmap(NULL, 131558, PROT_READ, MAP_PRIVATE, 4, 0) = 0x7f5d2eee6000 [pid 2077] close(4) = 0 [pid 2077] access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) [pid 2077] open("/lib/libc.so.6", O_RDONLY) = 4 [pid 2077] read(4, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`\355\1\0\0\0\0\0"..., 832) = 832 [pid 2077] fstat(4, {st_mode=S_IFREG|0755, st_size=1572232, ...}) = 0 [pid 2077] mmap(NULL, 3680296, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x7f5d2e966000 [pid 2077] mprotect(0x7f5d2eae0000, 2093056, PROT_NONE) = 0 [pid 2077] mmap(0x7f5d2ecdf000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x179000) = 0x7f5d2ecdf000 [pid 2077] mmap(0x7f5d2ece4000, 18472, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f5d2ece4000 [pid 2077] close(4) = 0 [pid 2077] mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5d2eee5000 [pid 2077] mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5d2eee4000 [pid 2077] mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5d2eee3000 [pid 2077] arch_prctl(ARCH_SET_FS, 0x7f5d2eee4700) = 0 [pid 2077] mprotect(0x7f5d2ecdf000, 16384, PROT_READ) = 0 [pid 2077] mprotect(0x617000, 4096, PROT_READ) = 0 [pid 2077] mprotect(0x7f5d2ef09000, 4096, PROT_READ) = 0 [pid 2077] munmap(0x7f5d2eee6000, 131558) = 0 [pid 2077] getpid() = 2077 [pid 2077] rt_sigaction(SIGCHLD, {SIG_DFL, [CHLD], SA_RESTORER|SA_RESTART, 0x7f5d2e999af0}, {SIG_DFL, [], 0}, 8) = 0 [pid 2077] geteuid() = 0 [pid 2077] brk(0) = 0x2590000 [pid 2077] brk(0x25b1000) = 0x25b1000 [pid 2077] getppid() = 2064 [pid 2077] stat("/root", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 2077] stat(".", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 2077] rt_sigaction(SIGINT, NULL, {SIG_DFL, [], 0}, 8) = 0 [pid 2077] rt_sigaction(SIGINT, {0x408189, ~[RTMIN RT_1], SA_RESTORER, 0x7f5d2e999af0}, NULL, 8) = 0 [pid 2077] rt_sigaction(SIGQUIT, NULL, {SIG_DFL, [], 0}, 8) = 0 [pid 2077] rt_sigaction(SIGQUIT, {SIG_DFL, ~[RTMIN RT_1], SA_RESTORER, 0x7f5d2e999af0}, NULL, 8) = 0 [pid 2077] rt_sigaction(SIGTERM, NULL, {SIG_DFL, [], 0}, 8) = 0 [pid 2077] rt_sigaction(SIGTERM, {SIG_DFL, ~[RTMIN RT_1], SA_RESTORER, 0x7f5d2e999af0}, NULL, 8) = 0 [pid 2077] open("/dev/null", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 4 [pid 2077] fcntl(2, F_DUPFD, 10) = 10 [pid 2077] close(2) = 0 [pid 2077] fcntl(10, F_SETFD, FD_CLOEXEC) = 0 [pid 2077] dup2(4, 2) = 2 [pid 2077] close(4) = 0 [pid 2077] clone(Process 2078 attached child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f5d2eee49d0) = 2078 [pid 2077] wait4(-1, <unfinished ...> [pid 2078] execve("/sbin/iwpriv", ["/sbin/iwpriv", "-a"], [/* 19 vars */] ---------------------------------------------- running iwpriv -a manually results in a kernel panic and the following error message: lo no private ioctls. eth0 no private ioctls. wlan0 Available read-only private ioctl : wlan0 firm_ver:63 Kernel Panic [etc...] ------------- i would appreciate any further advice you can give me! thank you, Matt ------Please consider the environment before printing this e-mail. ** Attachment added: "rtl8192se_linux_2.6.0017.0705.2010.tar.gz" http://launchpadlibrarian.net/51407658/rtl8192se_linux_2.6.0017.0705.2010.tar.gz -- r8192se_pci + powertop (iwpriv -a) = kernel panic https://bugs.launchpad.net/bugs/585938 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
