[pkg-fso-maint] Kernel and wifi
gregor herrmann
gregoa at debian.org
Mon Mar 2 19:32:03 UTC 2009
On Sun, 01 Mar 2009 22:44:50 +0100, gregor herrmann wrote:
> > > But I could produce an oops later by combining manual "ifconfig eth0
> > > down", activating wicd-client, and turning wifi on/off with o-p-p.
> > > (Don't ask me how exactly ...)
> > I know, I am sometime a bit boring, but I think the command order would
> > be a good start to understand what cause the oops.
> Of course you're right (and not boring) but I was just too tired
> after several oopses and reboots with ripping out the battery etc.
> I will try again.
I did some tests again:
1) "normal" boot, i.e. with wicd enabled
I played around with several xterms and GNU screen windows to monitor
a lot of stuff in several loops. What I've seen:
* ar6000 is loaded from the beginning
* ifconfig eth0 shows the interface up (without IP address) from the
first possibility I could see something
* iwconfig eth0 also knows the interface from the beginning (but it's
has no related ESSID and is not associated)
* When dmesg shows the oops, "iwconfig eth0" writes (once)
"Segmentation fault".
* After the oops both ifconfig and iwconfig hang, strace output
attached.
2) boot with wicd disabled in runlevel 2
As we already know :) there's no oops in this case. Status after
everything has come up and before I did anything (except entering the
PIN):
* ifconfig and iwconfig don't know about eth0, o-p-p has the "wifi
disabled" icon.
* No eth0 in /proc/net/dev.
* ar6000 loaded.
Now let's try to produce a kernel oops:
* Turn on wifi (o-p-p): eth0 shows up in /proc/net/dev and in
i(w|f)config output. No oops.
* /etc/init.d/wicd start: no changes, no oops.
* Start wicd-client: no changes, no oops.
* Open the wicd-client GUI; it scans for wireless networks; still no
changes/problems.
* Connect to a (WPA encrypted) network via the GUI: wpa_supplicant
and dhclient get called, both succeed, no problems. dmesg output:
[ 584.355000] ar6000_ioctl_giwscan(): data length 0
[ 587.245000] AR6000 disconnected
[ 587.630000] channel hint set to 2462
[ 590.105000] eth0: no IPv6 routers present
[ 592.135000] channel hint set to 2462
[ 592.150000] AR6000 disconnected
[ 592.225000] AR6000 connected event on freq 2462 with bssid 00:18:84:29:9a:57 listenInterval=100, beaconInterval = 100, beaconIeLen = 26 assocReqLen=60 assocRespLen =59
[ 592.230000] Network: Infrastructure
* Turn off wifi (o-p-p): Here we are: the kernel oopses; last lines
of dmesg output attached.
> > BTW, I have never asked it before, but does the oops happen with plain
> > (i.e. not encrypted) WiFi networks as well?
> I never actively connected to any network (neither encrypted nor
> otherwise), the oops happens earlier (and after it both ifconfig and
> iwconfig just hang). Hm. But maybe I find something ...
I tried the same procedure like above to evoke the oops only changing
the WPA encrypted network to an open one: The same, i.e. the oops
happens a few seconds after I disable wifi with the icon in o-p-p.
Cheers,
gregor
--
.''`. Home: http://info.comodo.priv.at/{,blog/} / GPG Key ID: 0x00F3CFE4
: :' : Debian GNU/Linux user, admin, & developer - http://www.debian.org/
`. `' Member of VIBE!AT, SPI Inc., fellow of FSFE | http://got.to/quote/
`- NP: Tom Waits: Big in Japan
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[ 738.525000] debug_hdr_ptr: 0x800018b0
[ 738.540000] AR6000 disconnected from 00:18:84:29:9a:57
[ 744.210000] ar6000_wow interrupt
[ 745.080000] Unable to handle kernel NULL pointer dereference at virtual address 00000126
[ 745.085000] pgd = c7478000
[ 745.085000] [00000126] *pgd=36bff031, *pte=00000000, *ppte=00000000
[ 745.100000] Internal error: Oops: 17 [#1] PREEMPT
[ 745.100000] Modules linked in: rfcomm l2cap ipv6 snd_soc_neo1973_gta02_wm8753 snd_soc_s3c24xx_i2s snd_soc_s3c24xx snd_soc_wm8753 snd_soc_core snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc snd g_ether btusb bluetooth ar6000 ohci_hcd
[ 745.100000] CPU: 0 Not tainted (2.6.28-20090105.git69b2aa26 #1)
[ 745.100000] PC is at wmi_get_power_mode_cmd+0xc/0x14 [ar6000]
[ 745.100000] LR is at ar6000_ioctl_giwpower+0x14/0x18 [ar6000]
[ 745.100000] pc : [<bf01c2d8>] lr : [<bf0161d8>] psr: 20000013
[ 745.100000] sp : c747dd98 ip : c747dda8 fp : c747dda4
[ 745.100000] r10: 00008b2d r9 : c1994000 r8 : 00000001
[ 745.100000] r7 : 03d7e770 r6 : c02ebdf8 r5 : c747de88 r4 : 00008b2d
[ 745.100000] r3 : 00000000 r2 : c747de88 r1 : c747de2c r0 : 00000000
[ 745.100000] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
[ 745.100000] Control: c000717f Table: 37478000 DAC: 00000015
[ 745.100000] Process iwconfig (pid: 2904, stack limit = 0xc747c268)
[ 745.100000] Stack: (0xc747dd98 to 0xc747e000)
[ 745.100000] dd80: c747ddb4 c747dda8
[ 745.100000] dda0: bf0161d8 bf01c2dc c747de1c c747ddb8 c02c427c bf0161d4 c747de2c c747ddc8
[ 745.100000] ddc0: c025c150 c03c9d34 c03c9844 22222222 22222222 22222222 22222222 22222222
[ 745.100000] dde0: c747de04 00008b2d 00000000 c1994000 c747de1c 00008b2d c747de78 c08f3d8c
[ 745.100000] de00: 03d7e770 00000001 c747c000 03d7e770 c747de54 c747de20 c02c3dd8 c02c421c
[ 745.100000] de20: bf0161c4 c0181580 c79d19a0 00008b2d c747defc 00000000 00008b2d c747de78
[ 745.100000] de40: c08f3d8c 00000000 c747decc c747de58 c0253d64 c02c3d2c 40030f3c c79d19d8
[ 745.100000] de60: c747de84 c747de70 c02caf00 c00442e4 c79d19d4 c79d19d8 30687465 00000000
[ 745.100000] de80: 00000000 00000000 0337f980 00000002 00000038 03d7e948 c747debc c747dea8
[ 745.100000] dea0: c0062fc4 c7a6e7a0 00008b2d 03d7e770 c7a6e7a0 c0030024 c747c000 03d7e770
[ 745.100000] dec0: c747deec c747ded0 c02435fc c02536c0 c006906c c7a6e7a0 03d7e770 00008b2d
[ 745.100000] dee0: c747df0c c747def0 c00b13d4 c02433ec c747dfac c77cd328 c7a6e7a0 00008b2d
[ 745.100000] df00: c747df7c c747df10 c00b19c8 c00b13a8 c0030024 c6b660c4 c747df3c c747df28
[ 745.100000] df20: c02caf50 c00442e4 00000002 c6b660a0 c747df5c c747df40 c00a2b1c c02caf2c
[ 745.100000] df40: 00000000 00000002 c77cd2e0 00000119 c747df84 00000002 03d7e770 00008b2d
[ 745.100000] df60: c7a6e7a0 c0030024 c747c000 03d7e464 c747dfa4 c747df80 c00b1a60 c00b154c
[ 745.100000] df80: ffffffff 00000000 03d7e770 03d7ea37 00000002 00000036 00000000 c747dfa8
[ 745.100000] dfa0: c002fea0 c00b1a30 03d7e770 03d7ea37 00000002 00008b2d 03d7e770 03d7e77f
[ 745.100000] dfc0: 03d7e770 03d7ea37 00000002 00000036 03d7e944 00000000 03d7e464 00000000
[ 745.100000] dfe0: 03d7e2f8 03d7e2e8 0000ac10 401ab60c 60000010 00000002 00000000 00000000
[ 745.100000] Backtrace:
[ 745.100000] [<bf01c2cc>] (wmi_get_power_mode_cmd+0x0/0x14 [ar6000]) from [<bf0161d8>] (ar6000_ioctl_giwpower+0x14/0x18 [ar6000])
[ 745.100000] [<bf0161c4>] (ar6000_ioctl_giwpower+0x0/0x18 [ar6000]) from [<c02c427c>] (ioctl_standard_call+0x70/0x3c4)
[ 745.100000] [<c02c420c>] (ioctl_standard_call+0x0/0x3c4) from [<c02c3dd8>] (wext_handle_ioctl+0xbc/0x224)
[ 745.100000] [<c02c3d1c>] (wext_handle_ioctl+0x0/0x224) from [<c0253d64>] (dev_ioctl+0x6b4/0x71c)
[ 745.100000] r8:00000000 r7:c08f3d8c r6:c747de78 r5:00008b2d r4:00000000
[ 745.100000] [<c02536b0>] (dev_ioctl+0x0/0x71c) from [<c02435fc>] (sock_ioctl+0x220/0x260)
[ 745.100000] [<c02433dc>] (sock_ioctl+0x0/0x260) from [<c00b13d4>] (vfs_ioctl+0x3c/0x9c)
[ 745.100000] r6:00008b2d r5:03d7e770 r4:c7a6e7a0
[ 745.100000] [<c00b1398>] (vfs_ioctl+0x0/0x9c) from [<c00b19c8>] (do_vfs_ioctl+0x48c/0x4e4)
[ 745.100000] r6:00008b2d r5:c7a6e7a0 r4:c77cd328
[ 745.100000] [<c00b153c>] (do_vfs_ioctl+0x0/0x4e4) from [<c00b1a60>] (sys_ioctl+0x40/0x60)
[ 745.100000] [<c00b1a20>] (sys_ioctl+0x0/0x60) from [<c002fea0>] (ret_fast_syscall+0x0/0x2c)
[ 745.100000] r7:00000036 r6:00000002 r5:03d7ea37 r4:03d7e770
[ 745.100000] Code: bf021218 e1a0c00d e92dd800 e24cb004 (e5d00126)
[ 745.105000] ---[ end trace 22768877d240e60e ]---
[ 761.535000] pcf50633 0-0073: Charging restarted..
[ 761.555000] pcf50633 0-0073: INT1=0x80 INT2=0x00 INT3=0x01 INT4=0x00 INT5=0x00
[ 761.625000] pcf50633 0-0073: INT1=0x00 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00
[ 761.650000] pcf50633 0-0073: INT1=0x00 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00
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execve("/sbin/ifconfig", ["ifconfig", "eth0"], ["TERM=xterm", "SHELL=/bin/bash", "USER=root", "LS_COLORS=rs=0:di=01;34:ln=01;36"..., "PAGER=most", "PATH=/root/bin:/usr/local/sbin:/"..., "PWD=/root", "EDITOR=joe", "LANG=C", "PS1=\\h:\\w\\$ ", "SHLVL=1", "HOME=/root", "LS_OPTIONS=--color=auto", "LOGNAME=root", "VISUAL=joe", "LC_CTYPE=de_AT at euro", "DISPLAY=localhost:12.0", "_=/usr/bin/strace"]) = 0
brk(0) = 0x20000
uname({sysname="Linux", nodename="deanna", release="2.6.28-20090105.git69b2aa26", version="#1 PREEMPT Fri Feb 27 05:16:00 UTC 2009", machine="armv4tl"}) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4001d000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_dev=makedev(179, 2), st_ino=863891, st_mode=S_IFREG|0644, st_nlink=1, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=64, st_size=30776, st_atime=2009/03/02-19:14:33, st_mtime=2009/03/01-14:13:21, st_ctime=2009/03/01-14:13:22}) = 0
mmap2(NULL, 30776, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40026000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/libgcc_s.so.1", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0('\0\0004\0\0\0\374"..., 512) = 512
fstat64(3, {st_dev=makedev(179, 2), st_ino=586484, st_mode=S_IFREG|0644, st_nlink=1, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=96, st_size=48180, st_atime=2009/03/02-19:14:31, st_mtime=2009/02/19-03:53:40, st_ctime=2009/02/19-23:41:29}) = 0
mmap2(NULL, 79616, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x4002e000
mprotect(0x4003a000, 28672, PROT_NONE) = 0
mmap2(0x40041000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xb) = 0x40041000
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\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0$R\1\0004\0\0\0\320"..., 512) = 512
fstat64(3, {st_dev=makedev(179, 2), st_ino=586469, st_mode=S_IFREG|0755, st_nlink=1, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=2376, st_size=1210352, st_atime=2009/03/02-19:14:33, st_mtime=2009/02/28-12:22:52, st_ctime=2009/03/01-14:02:58}) = 0
mmap2(NULL, 1245752, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x40042000
mprotect(0x40165000, 32768, PROT_NONE) = 0
mmap2(0x4016d000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x123) = 0x4016d000
mmap2(0x40170000, 8760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40170000
close(3) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4001e000
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4001f000
set_tls(0x4001e8e0, 0x4001e8e0, 0x67c, 0x4001efb8, 0x40025048) = 0
open("/dev/urandom", O_RDONLY) = 3
read(3, "\341\201\33\214"..., 4) = 4
close(3) = 0
mprotect(0x4016d000, 8192, PROT_READ) = 0
mprotect(0x40024000, 4096, PROT_READ) = 0
munmap(0x40026000, 30776) = 0
open("/usr/lib/locale/locale-archive", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_dev=makedev(179, 2), st_ino=196800, st_mode=S_IFREG|0644, st_nlink=1, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=3904, st_size=2048272, st_atime=2009/03/01-14:12:16, st_mtime=2009/03/01-14:13:04, st_ctime=2009/03/01-14:13:42}) = 0
mmap2(NULL, 2048272, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40173000
close(3) = 0
brk(0) = 0x20000
brk(0x41000) = 0x41000
uname({sysname="Linux", nodename="deanna", release="2.6.28-20090105.git69b2aa26", version="#1 PREEMPT Fri Feb 27 05:16:00 UTC 2009", machine="armv4tl"}) = 0
access("/proc/net", R_OK) = 0
access("/proc/net/unix", R_OK) = 0
socket(PF_FILE, SOCK_DGRAM, 0) = 3
socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 4
access("/proc/net/if_inet6", R_OK) = 0
socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP) = 5
access("/proc/net/ax25", R_OK) = -1 ENOENT (No such file or directory)
access("/proc/net/nr", R_OK) = -1 ENOENT (No such file or directory)
access("/proc/net/rose", R_OK) = -1 ENOENT (No such file or directory)
access("/proc/net/ipx", R_OK) = -1 ENOENT (No such file or directory)
access("/proc/net/appletalk", R_OK) = -1 ENOENT (No such file or directory)
access("/proc/sys/net/econet", R_OK) = -1 ENOENT (No such file or directory)
access("/proc/sys/net/ash", R_OK) = -1 ENOENT (No such file or directory)
access("/proc/net/x25", R_OK) = -1 ENOENT (No such file or directory)
open("/proc/net/dev", O_RDONLY) = 6
fstat64(6, {st_dev=makedev(0, 3), st_ino=4026531992, st_mode=S_IFREG|0444, st_nlink=1, st_uid=0, st_gid=0, st_blksize=1024, st_blocks=0, st_size=0, st_atime=2009/03/02-19:27:42, st_mtime=2009/03/02-19:27:42, st_ctime=2009/03/02-19:27:42}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40020000
read(6, "Inter-| Receive "..., 1024) = 569
close(6) = 0
munmap(0x40020000, 4096) = 0
ioctl(5, SIOCGIFFLAGS, {ifr_name="eth0", ifr_flags=IFF_UP|IFF_BROADCAST|IFF_RUNNING|IFF_MULTICAST}) = 0
ioctl(5, SIOCGIFHWADDR, {ifr_name="eth0", ifr_hwaddr=00:12:cf:8f:08:56}) = 0
ioctl(5, SIOCGIFMETRIC, {ifr_name="eth0", ifr_metric=0}) = 0
ioctl(5, SIOCGIFMTU, {ifr_name="eth0", ifr_mtu=1500}) = 0
ioctl(5, SIOCGIFMAP, {ifr_name="eth0", ifr_map={mem_start=0, mem_end=0, base_addr=0, irq=0, dma=0, port=0}}) = 0
ioctl(5, SIOCGIFMAP, {ifr_name="eth0", ifr_map={mem_start=0, mem_end=0, base_addr=0, irq=0, dma=0, port=0}}) = 0
ioctl(5, SIOCGIFTXQLEN, {ifr_name="eth0", ifr_qlen=1000}) = 0
ioctl(4, SIOCGIFADDR
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execve("/sbin/iwconfig", ["iwconfig", "eth0"], ["TERM=xterm", "SHELL=/bin/bash", "USER=root", "LS_COLORS=rs=0:di=01;34:ln=01;36"..., "PAGER=most", "PATH=/root/bin:/usr/local/sbin:/"..., "PWD=/root", "EDITOR=joe", "LANG=C", "PS1=\\h:\\w\\$ ", "SHLVL=1", "HOME=/root", "LS_OPTIONS=--color=auto", "LOGNAME=root", "VISUAL=joe", "LC_CTYPE=de_AT at euro", "DISPLAY=localhost:11.0", "_=/usr/bin/strace"]) = 0
brk(0) = 0x15000
uname({sysname="Linux", nodename="deanna", release="2.6.28-20090105.git69b2aa26", version="#1 PREEMPT Fri Feb 27 05:16:00 UTC 2009", machine="armv4tl"}) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4001d000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_dev=makedev(179, 2), st_ino=863891, st_mode=S_IFREG|0644, st_nlink=1, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=64, st_size=30776, st_atime=2009/03/02-19:14:33, st_mtime=2009/03/01-14:13:21, st_ctime=2009/03/01-14:13:22}) = 0
mmap2(NULL, 30776, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40026000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/libiw.so.29", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0L\26\0\0004\0\0\0\340"..., 512) = 512
fstat64(3, {st_dev=makedev(179, 2), st_ino=586967, st_mode=S_IFREG|0644, st_nlink=1, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=64, st_size=28832, st_atime=2009/02/04-23:26:24, st_mtime=2008/07/25-17:56:45, st_ctime=2009/02/04-23:26:27}) = 0
mmap2(NULL, 60400, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x4002e000
mprotect(0x40035000, 28672, PROT_NONE) = 0
mmap2(0x4003c000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6) = 0x4003c000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/libm.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\2641\0\0004\0\0\0\310"..., 512) = 512
fstat64(3, {st_dev=makedev(179, 2), st_ino=586471, st_mode=S_IFREG|0644, st_nlink=1, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=1328, st_size=673320, st_atime=2009/03/02-19:14:31, st_mtime=2009/02/28-12:22:53, st_ctime=2009/03/01-14:02:59}) = 0
mmap2(NULL, 704672, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x4003d000
mprotect(0x400e1000, 28672, PROT_NONE) = 0
mmap2(0x400e8000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa3) = 0x400e8000
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\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0$R\1\0004\0\0\0\320"..., 512) = 512
fstat64(3, {st_dev=makedev(179, 2), st_ino=586469, st_mode=S_IFREG|0755, st_nlink=1, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=2376, st_size=1210352, st_atime=2009/03/02-19:14:33, st_mtime=2009/02/28-12:22:52, st_ctime=2009/03/01-14:02:58}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4001e000
mmap2(NULL, 1245752, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x400ea000
mprotect(0x4020d000, 32768, PROT_NONE) = 0
mmap2(0x40215000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x123) = 0x40215000
mmap2(0x40218000, 8760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40218000
close(3) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4001f000
set_tls(0x4001eb40, 0x4001eb40, 0x67c, 0x4001f218, 0x40025048) = 0
open("/dev/urandom", O_RDONLY) = 3
read(3, "\365\3{*"..., 4) = 4
close(3) = 0
mprotect(0x40215000, 8192, PROT_READ) = 0
mprotect(0x400e8000, 4096, PROT_READ) = 0
mprotect(0x40024000, 4096, PROT_READ) = 0
munmap(0x40026000, 30776) = 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 3
ioctl(3, SIOCGIWNAME
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