[Xen-devel] Re: Xen pv kernel (2.6.30) causes s2ram to crash with segmentation fault

[Tom Rotenberg <tom.rotenberg@xxxxxxxxx>]

I am trying s2ram on dom0 itself. Why shouldn't it work?
I'm trying to send the host to sleep, but s2ram doesn't work on dom0.

On Tue, Jul 7, 2009 at 12:56 AM, Jeremy Fitzhardinge<jeremy@xxxxxxxx> wrote:
> On 07/06/09 08:04, Tom Rotenberg wrote:
>> Hi,
>>
>> I have been testing the new 2.6.30 kernel, which comes with the xen
>> unstable, and i have found that it causes the 's2ram -f -m' to crash
>> with a segmentation fault.
>> Here are my test results:
>> 1. When booting the 2.6.30 kernel, without Xen, then s2ram works
>> perfect (!) (it goes to sleep and returns perfect!)
>> 2. When booting the 2.6.30 kernel with Xen, then when i try to run
>> 's2ram -f -m', i get the following result:
>>
>
> I would not expect s2ram to work at all in a PV guest.  What are you
> trying to achieve?
>
>    J
>
>> dell-e6400:~# s2ram -f -m
>> Calling get_mode
>> Segmentation fault
>>
>>
>> I am using a Dell e6400 machine.
>>
>> Can someone please help me with this? Jeremy - do u know why does this
>> problem occurs?
>>
>> If you are interested, here are the results of strace, on that command:
>>
>> dell-igd:~# strace s2ram -f -m
>> execve("/usr/sbin/s2ram", ["s2ram", "-f", "-m"], [/* 18 vars */]) = 0
>> brk(0)                                  = 0x20c1000
>> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>> 0) = 0x7f65458cd000
>> access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or 
>> directory)
>> mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>> 0) = 0x7f65458cb000
>> 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=31573, ...}) = 0
>> mmap(NULL, 31573, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f65458c3000
>> close(3)                                = 0
>> access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or 
>> directory)
>> open("/lib/libx86.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\0pw\0\0\0\0\0\0@"...,
>> 832) = 832
>> fstat(3, {st_mode=S_IFREG|0644, st_size=137000, ...}) = 0
>> mmap(NULL, 2235424, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
>> 0) = 0x7f6545491000
>> mprotect(0x7f65454b1000, 2093056, PROT_NONE) = 0
>> mmap(0x7f65456b0000, 8192, PROT_READ|PROT_WRITE,
>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1f000) = 0x7f65456b0000
>> mmap(0x7f65456b2000, 3104, PROT_READ|PROT_WRITE,
>> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f65456b2000
>> close(3)                                = 0
>> access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or 
>> directory)
>> open("/usr/lib/libpci.so.3", 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\0\"\0\0\0\0\0\0@"...,
>> 832) = 832
>> fstat(3, {st_mode=S_IFREG|0644, st_size=42168, ...}) = 0
>> mmap(NULL, 2137400, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
>> 0) = 0x7f6545287000
>> mprotect(0x7f6545291000, 2093056, PROT_NONE) = 0
>> mmap(0x7f6545490000, 4096, PROT_READ|PROT_WRITE,
>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x9000) = 0x7f6545490000
>> close(3)                                = 0
>> access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or 
>> directory)
>> open("/lib/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\0\300\342\1\0\0\0\0\0@"...,
>> 832) = 832
>> fstat(3, {st_mode=S_IFREG|0755, st_size=1375536, ...}) = 0
>> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>> 0) = 0x7f65458c2000
>> mmap(NULL, 3482232, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
>> 0) = 0x7f6544f34000
>> mprotect(0x7f654507e000, 2093056, PROT_NONE) = 0
>> mmap(0x7f654527d000, 20480, PROT_READ|PROT_WRITE,
>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x149000) = 0x7f654527d000
>> mmap(0x7f6545282000, 17016, PROT_READ|PROT_WRITE,
>> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f6545282000
>> close(3)                                = 0
>> access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or 
>> directory)
>> open("/usr/lib/libz.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@!\0\0\0\0\0\0@"...,
>> 832) = 832
>> fstat(3, {st_mode=S_IFREG|0644, st_size=93504, ...}) = 0
>> mmap(NULL, 2188616, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
>> 0) = 0x7f6544d1d000
>> mprotect(0x7f6544d33000, 2097152, PROT_NONE) = 0
>> mmap(0x7f6544f33000, 4096, PROT_READ|PROT_WRITE,
>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x16000) = 0x7f6544f33000
>> close(3)                                = 0
>> access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or 
>> directory)
>> open("/lib/libresolv.so.2", O_RDONLY)   = 3
>> read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\00003\0\0\0\0\0\0@"...,
>> 832) = 832
>> fstat(3, {st_mode=S_IFREG|0644, st_size=72568, ...}) = 0
>> mmap(NULL, 2177800, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
>> 0) = 0x7f6544b09000
>> mprotect(0x7f6544b19000, 2097152, PROT_NONE) = 0
>> mmap(0x7f6544d19000, 8192, PROT_READ|PROT_WRITE,
>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x10000) = 0x7f6544d19000
>> mmap(0x7f6544d1b000, 6920, PROT_READ|PROT_WRITE,
>> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f6544d1b000
>> close(3)                                = 0
>> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>> 0) = 0x7f65458c1000
>> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>> 0) = 0x7f65458c0000
>> arch_prctl(ARCH_SET_FS, 0x7f65458c06e0) = 0
>> mprotect(0x7f654527d000, 12288, PROT_READ) = 0
>> munmap(0x7f65458c3000, 31573)           = 0
>> open("/dev/zero", O_RDWR)               = 3
>> mmap(0x1000, 655360, PROT_READ|PROT_WRITE|PROT_EXEC,
>> MAP_SHARED|MAP_FIXED, 3, 0) = 0x1000
>> close(3)                                = 0
>> open("/dev/mem", O_RDWR)                = 3
>> mmap(NULL, 1282, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_FIXED, 3, 0) 
>> = 0
>> mmap(0xa0000, 393216, PROT_READ|PROT_WRITE|PROT_EXEC,
>> MAP_SHARED|MAP_FIXED, 3, 0xa0000) = 0xa0000
>> close(3)                                = 0
>> ioperm(0, 0x400, 0x1)                   = 0
>> iopl(0x3)                               = 0
>> brk(0)                                  = 0x20c1000
>> brk(0x20e2000)                          = 0x20e2000
>> access("/sys/bus/pci", R_OK)            = 0
>> fstat(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 0), ...}) = 0
>> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>> 0) = 0x7f65458ca000
>> write(1, "Calling get_mode\n"..., 17Calling get_mode
>> )   = 17
>> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
>> +++ killed by SIGSEGV +++
>>
>> Tom
>>
>>
>
>

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel