Hi,
looks like llc_ui_bind forgets to set llc->dev. The combination:
bind (fd, &sllc, sizeof (sllc));
connect(fd, &dllc, sizeof(dllc));
produces the following oops for me:
Unable to handle kernel paging request at virtual address 00000000000000c8
llc-linux(18496): Oops 0
pc = [<fffffffc00576194>] ra = [<fffffffc00582df0>] ps = 0000 Not
tainted
Using defaults from ksymoops -t elf64-alpha -a alpha
v0 = 0000000000000000 t0 = fffffffc00582cba t1 = fffffffc00582cba
t2 = 0000000004030201 t3 = 0000000000582c00 t4 = 0000000004030201
t5 = 0000060504030201 t6 = fffffc001389fe19 t7 = fffffc001389c000
s0 = fffffc002bfc0e00 s1 = ffffffffffffffc8 s2 = fffffc001389fe88
s3 = ffffffffffffffdb s4 = fffffc001f56e8c0 s5 = fffffc0025a1e9c0
s6 = 000000011ffffba0
a0 = fffffc002bfc0e00 a1 = 00000000000000c8 a2 = fffffc001389fe90
a3 = 0000000000582cba a4 = ffffffffffffffff a5 = 0000000000000000
t8 = fffffc001389fe1d t9 = 00000023d3f41186 t10= 0000060504030201
t11= fffffc001389fe94 pv = fffffffc0057e360 at = fffffc001f56e8c0
gp = fffffffc00594068 sp = fffffc001389fde8
Trace:fffffc00011607ba fffffc000115d940 fffffc0001012c9c
Code: b27e0030 2c3e0034 2c5e0031 48b20d45 2cd20005 487204c3
<2c910000> 44650403
>>RA; fffffffc00582df0 <[llc2]llc_ui_connect+170/220>
>>PC; fffffffc00576194 <[llc2]llc_establish_connectio+84/440> <=====
Trace; fffffc00011607ba <release_sock+1a/f0>
Trace; fffffc000115d940 <sys_connect+a0/e0>
Trace; fffffc0001012c9c <strace+4c/c0>
Code; fffffffc0057617c <[llc2]llc_establish_connectio+6c/440>
0000000000000000 <_PC>:
Code; fffffffc0057617c <[llc2]llc_establish_connectio+6c/440>
0: 30 00 7e b2 stl a3,48(sp)
Code; fffffffc00576180 <[llc2]llc_establish_connectio+70/440>
4: 34 00 3e 2c ldq_u t0,52(sp)
Code; fffffffc00576184 <[llc2]llc_establish_connectio+74/440>
8: 31 00 5e 2c ldq_u t1,49(sp)
Code; fffffffc00576188 <[llc2]llc_establish_connectio+78/440>
c: 45 0d b2 48 extlh t4,a2,t4
Code; fffffffc0057618c <[llc2]llc_establish_connectio+7c/440>
10: 05 00 d2 2c ldq_u t5,5(a2)
Code; fffffffc00576190 <[llc2]llc_establish_connectio+80/440>
14: c3 04 72 48 extll t2,a2,t2
Code; fffffffc00576194 <[llc2]llc_establish_connectio+84/440> <=====
18: 00 00 91 2c ldq_u t3,0(a1) <=====
Code; fffffffc00576198 <[llc2]llc_establish_connectio+88/440>
1c: 03 04 65 44 or t2,t4,t2
Without the bind(), things get a bit further. I receive an EAGAIN and in
dmesg:
schedule_timeout: wrong timeout value ffffffffffffffff from
fffffffc005831d4
So, apparently, llc_ui_wait_for_conn() and llc_ui_wait_for_disc() are
buggy, as well...
--jochen
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