Opened 16 years ago
Closed 16 years ago
#2562 closed bug (fixed)
Occasional hang
| Reported by: | andreasf | Owned by: | bonefish |
|---|---|---|---|
| Priority: | normal | Milestone: | R1 |
| Component: | - General | Version: | R1/pre-alpha1 |
| Keywords: | Cc: | ||
| Blocked By: | Blocking: | ||
| Platform: | x86 |
Description
As reported in #2558, I'm experiencing occasional hangs with high CPU activity on both HT "cores" while compiling software on gcc2 Haiku on real hardware.
Here's serial output from hrev26754:
Welcome to Kernel Debugging Land...
Thread 37881 "sh" running on CPU 0
kdebug> teams
team id parent name
0x90c0c000 94 0x90b80000 Terminal
0x90b80000 1 0x00000000 kernel_team
0x90c0c174 95 0x90b80000 media_server
0x90c0c45c 97 0x90b80000 midi_server
0x90c0c5d0 98 0x90b80000 print_server
0x90fa1000 21675 0x90b80a2c pe
0x90fa1174 37460 0x90fa145c sh
0x90b80e88 24502 0x90c0cba0 sh
0x90fa1744 37461 0x90fa1174 make
0x90fa12e8 33557 0x90c0ce88 make
0x90b808b8 77 0x90b80000 syslog_daemon
0x90fa145c 33558 0x90fa12e8 sh
0x90b80174 33434 0x90b80e88 make
0x90c0c744 33436 0x90b80174 make
0x90c0c2e8 33437 0x90c0c744 sh
0x90b80ba0 81 0x90b80744 input_server
0x90c0cba0 144 0x90c0c000 sh
0x90b802e8 53 0x90b80000 registrar
0x90c0ca2c 33441 0x90c0c2e8 sh
0x90c0ce88 33442 0x90c0ca2c make
0x90c0c8b8 117 0x90c0c174 media_addon_server
0x90b8045c 58 0x90b80000 debug_server
0x90b805d0 59 0x90b80000 net_server
0x90b80a2c 91 0x90b80000 Tracker
0x90b80744 60 0x90b80000 app_server
0x90fa15d0 37881 0x90fa1744 sh
0x90b80d14 92 0x90b80000 Deskbar
kdebug> threads 37460
thread id state wait for object cpu pri stack team name
0x914dd000 37460 waiting cvar 0x90b818a8 - 10 0x957ea00037460 sh
kdebug> threads 37881
thread id state wait for object cpu pri stack team name
0x914ab800 37881 running - 0 10 0x957f200037881 sh
kdebug> sc 37881
stack trace for thread 37881 "sh"
kernel stack: 0x957f2000 to 0x957f6000
user stack: 0x7efef000 to 0x7ffef000
frame caller <image>:function + offset
0 957f5584 (+ 48) 80053e0d <kernel>:invoke_debugger_command + 0x00ed
1 957f55b4 (+ 64) 80053c05 <kernel>:invoke_pipe_segment__FP21debugger_comma9
2 957f55f4 (+ 64) 80053f4d <kernel>:invoke_debugger_command_pipe + 0x009d
3 957f5634 (+ 48) 80054e28 <kernel>:_ParseCommandPipe__16ExpressionParserRi4
4 957f5664 (+ 48) 800547de <kernel>:EvaluateCommand__16ExpressionParserPCcRe
5 957f5694 (+ 224) 800561f4 <kernel>:evaluate_debug_command + 0x0088
6 957f5774 (+ 64) 80052286 <kernel>:kernel_debugger_loop__Fv + 0x01ae
7 957f57b4 (+ 48) 80052e1b <kernel>:kernel_debugger + 0x0117
8 957f57e4 (+ 192) 80052cf9 <kernel>:panic + 0x0029
9 957f58a4 (+ 48) 807a4df5 </boot/beos/system/add-ons/kernel/bus_managers/pd
10 957f58d4 (+ 64) 80035ba8 <kernel>:int_io_interrupt_handler + 0x00e0
11 957f5914 (+ 48) 800b2950 <kernel>:hardware_interrupt + 0x006c
12 957f5944 (+ 12) 800b5df6 <kernel>:int_bottom + 0x0036 (nearest)
iframe at 0x957f5950 (end = 0x957f59a8)
eax 0x200 ebx 0x90b71030 ecx 0x0 edx 0x246
esi 0x1 edi 0x91bada10 ebp 0x957f59a0 esp 0x957f5984
eip 0x800b25bc eflags 0x246
vector: 0x21, error code: 0x0
13 957f5950 (+ 80) 800b25bc <kernel>:arch_int_restore_interrupts + 0x0020
14 957f59a0 (+ 32) 80035d32 <kernel>:restore_interrupts + 0x0012
15 957f59c0 (+ 48) 800b5384 <kernel>:flush_tmap__FP18vm_translation_map + 0x0
16 957f59f0 (+ 48) 800b4b0b <kernel>:unlock_tmap__FP18vm_translation_map + 07
17 957f5a20 (+ 64) 800a5640 <kernel>:vm_map_page + 0x0078
18 957f5a60 (+ 256) 800a7f07 <kernel>:vm_soft_fault__FP16vm_address_spaceUlbTf
19 957f5b60 (+ 64) 800a7028 <kernel>:vm_page_fault + 0x0080
20 957f5ba0 (+ 64) 800b28cd <kernel>:page_fault_exception + 0x00b1
21 957f5be0 (+ 12) 800b5df6 <kernel>:int_bottom + 0x0036 (nearest)
iframe at 0x957f5bec (end = 0x957f5c44)
eax 0x0 ebx 0xffff00d6 ecx 0x1 edx 0x914abaec
esi 0x957f5ca4 edi 0xffff00d6 ebp 0x957f5c70 esp 0x957f5c20
eip 0x800b5a94 eflags 0x10202
vector: 0xe, error code: 0x3
22 957f5bec (+ 132) 800b5a94 <kernel>:arch_cpu_user_memcpy + 0x001e (nearest)
23 957f5c70 (+ 640) 800b3b83 <kernel>:arch_setup_signal_frame + 0x004f
24 957f5ef0 (+ 96) 800427d2 <kernel>:handle_signals + 0x03ce
25 957f5f50 (+ 64) 8004c9e6 <kernel>:thread_at_kernel_exit + 0x0076
26 957f5f90 (+ 12) 800b60fb <kernel>:kernel_exit_handle_signals + 0x0006 (ne)
iframe at 0x957f5f9c (end = 0x957f5ff4)
eax 0x0 ebx 0x341ac8 ecx 0x1 edx 0x4
esi 0x18030188 edi 0x18000000 ebp 0x7ffecc9c esp 0x957f5fd0
eip 0x800b5f50 eflags 0x212
vector: 0xfd, error code: 0x0
27 957f5f9c (+ 0) 800b5f50 <kernel>:trap99 + 0x0000 (nearest)
28 7ffecc9c (+ 32) 002c92a4 <libroot.so>:malloc + 0x01a4
29 7ffeccbc (+ 48) 00248ab5 <_APP_>:xrealloc + 0x0035
30 7ffeccec (+ 192) 00233729 <_APP_>:unlink_fifo_list + 0x0459 (nearest)
31 7ffecdac (+ 80) 00233b6d <_APP_>:command_substitute + 0x0345
32 7ffecdfc (+ 112) 002368c7 <_APP_>:pat_subst + 0x1bd7 (nearest)
33 7ffece6c (+ 64) 00231e79 <_APP_>:cond_expand_word + 0x0129 (nearest)
34 7ffeceac (+ 96) 00231f47 <_APP_>:cond_expand_word + 0x01f7 (nearest)
35 7ffecf0c (+ 48) 00231fa7 <_APP_>:expand_string_unsplit + 0x003b
36 7ffecf3c (+ 48) 00231ba5 <_APP_>:string_rest_of_args + 0x01d5 (nearest)
37 7ffecf6c (+ 64) 0023163a <_APP_>:strip_trailing_ifs_whitespace + 0x01f6 ()
38 7ffecfac (+ 48) 002317f1 <_APP_>:do_assignment + 0x0021
39 7ffecfdc (+ 48) 00237896 <_APP_>:expand_words_shellexp + 0x05da (nearest)
40 7ffed00c (+ 48) 0023728d <_APP_>:expand_words + 0x0021
41 7ffed03c (+ 112) 00226d09 <_APP_>:execute_command_internal + 0x2f65 (neare)
42 7ffed0ac (+ 96) 00224262 <_APP_>:execute_command_internal + 0x04be
43 7ffed10c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
44 7ffed15c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
45 7ffed18c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
46 7ffed1ec (+ 80) 00223bed <_APP_>:execute_command + 0x0065
47 7ffed23c (+ 80) 0022632a <_APP_>:execute_command_internal + 0x2586 (neare)
48 7ffed28c (+ 80) 002243ec <_APP_>:execute_command_internal + 0x0648
49 7ffed2dc (+ 64) 002253df <_APP_>:execute_command_internal + 0x163b (neare)
50 7ffed31c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
51 7ffed37c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
52 7ffed3cc (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
53 7ffed3fc (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
54 7ffed45c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
55 7ffed4ac (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
56 7ffed4dc (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
57 7ffed53c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
58 7ffed58c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
59 7ffed5bc (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
60 7ffed61c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
61 7ffed66c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
62 7ffed69c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
63 7ffed6fc (+ 80) 00223bed <_APP_>:execute_command + 0x0065
64 7ffed74c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
65 7ffed77c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
66 7ffed7dc (+ 80) 00223bed <_APP_>:execute_command + 0x0065
67 7ffed82c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
68 7ffed85c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
69 7ffed8bc (+ 80) 00223bed <_APP_>:execute_command + 0x0065
70 7ffed90c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
71 7ffed93c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
72 7ffed99c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
73 7ffed9ec (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
74 7ffeda1c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
75 7ffeda7c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
76 7ffedacc (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
77 7ffedafc (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
78 7ffedb5c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
79 7ffedbac (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
80 7ffedbdc (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
81 7ffedc3c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
82 7ffedc8c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
83 7ffedcbc (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
84 7ffedd1c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
85 7ffedd6c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
86 7ffedd9c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
87 7ffeddfc (+ 80) 00223bed <_APP_>:execute_command + 0x0065
88 7ffede4c (+ 64) 00225614 <_APP_>:execute_command_internal + 0x1870 (neare)
89 7ffede8c (+ 80) 00224380 <_APP_>:execute_command_internal + 0x05dc
90 7ffededc (+ 64) 002253df <_APP_>:execute_command_internal + 0x163b (neare)
91 7ffedf1c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
92 7ffedf7c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
93 7ffedfcc (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
94 7ffedffc (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
95 7ffee05c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
96 7ffee0ac (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
97 7ffee0dc (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
98 7ffee13c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
99 7ffee18c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (neare)
100 7ffee1bc (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
101 7ffee21c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
102 7ffee26c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (near)
103 7ffee29c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
104 7ffee2fc (+ 80) 00223bed <_APP_>:execute_command + 0x0065
105 7ffee34c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (near)
106 7ffee37c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
107 7ffee3dc (+ 80) 00223bed <_APP_>:execute_command + 0x0065
108 7ffee42c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (near)
109 7ffee45c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
110 7ffee4bc (+ 80) 00223bed <_APP_>:execute_command + 0x0065
111 7ffee50c (+ 64) 00225614 <_APP_>:execute_command_internal + 0x1870 (near)
112 7ffee54c (+ 80) 00224380 <_APP_>:execute_command_internal + 0x05dc
113 7ffee59c (+ 64) 002253df <_APP_>:execute_command_internal + 0x163b (near)
114 7ffee5dc (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
115 7ffee63c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
116 7ffee68c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (near)
117 7ffee6bc (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
118 7ffee71c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
119 7ffee76c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (near)
120 7ffee79c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
121 7ffee7fc (+ 80) 00223bed <_APP_>:execute_command + 0x0065
122 7ffee84c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (near)
123 7ffee87c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
124 7ffee8dc (+ 80) 00223bed <_APP_>:execute_command + 0x0065
125 7ffee92c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (near)
126 7ffee95c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
127 7ffee9bc (+ 80) 00223bed <_APP_>:execute_command + 0x0065
128 7ffeea0c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (near)
129 7ffeea3c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
130 7ffeea9c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
131 7ffeeaec (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (near)
132 7ffeeb1c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
133 7ffeeb7c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
134 7ffeebcc (+ 80) 0022632a <_APP_>:execute_command_internal + 0x2586 (near)
135 7ffeec1c (+ 80) 002243ec <_APP_>:execute_command_internal + 0x0648
136 7ffeec6c (+ 64) 002253df <_APP_>:execute_command_internal + 0x163b (near)
137 7ffeecac (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
138 7ffeed0c (+ 80) 00223bed <_APP_>:execute_command + 0x0065
139 7ffeed5c (+ 48) 00225362 <_APP_>:execute_command_internal + 0x15be (near)
140 7ffeed8c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740
141 7ffeedec (+ 80) 00223bed <_APP_>:execute_command + 0x0065
142 7ffeee3c (+ 48) 00226556 <_APP_>:execute_command_internal + 0x27b2 (near)
143 7ffeee6c (+ 80) 00224458 <_APP_>:execute_command_internal + 0x06b4
144 7ffeeebc (+ 80) 00223bed <_APP_>:execute_command + 0x0065
145 7ffeef0c (+ 48) 0021f8a5 <_APP_>:reader_loop + 0x01d1
146 7ffeef3c (+ 64) 0021dae2 <_APP_>:main + 0x07b2
147 7ffeef7c (+ 48) 0021679f <_APP_>:_start + 0x005b
148 7ffeefac (+ 48) 001008ea 839631:runtime_loader_seg0ro@0x00100000 + 0x8ea
149 7ffeefdc (+ 0) 7ffeefec 839630:sh_main_stack@0x7efef000 + 0xffffec
kdebug>
This is while executing
/bin/sh ../libtool --mode=link gcc -g -O2 -Wall -D_REENTRANT -o node-test node-test.o ../libglib.la
as part of pkg-config 0.23's make.
Ctrl+C is unable to kill the running application, neither does kill -9 <pid>. Restarting the system works without problems though.
Change History (5)
comment:1 by , 16 years ago
comment:2 by , 16 years ago
Forgot to mention that this was after libiconv 1.12's configure printing:
checking for stdlib.h... (cached) yes
comment:3 by , 16 years ago
| Owner: | changed from to |
|---|---|
| Status: | new → assigned |
comment:4 by , 16 years ago
Fortunately I'm able to reproduce the problem with a test program, so it should just be a matter of enough poking to understand it. So far I've only found out that in arch_setup_signal_frame() the address of the iframe is already broken. It gets the same one we see in the stack trace, which is off by 12 bytes (its end should be aligned with the kernel stack). The user stack pointer in this iframe points to the kernel stack, which causes data to be overwritten when the functions tries to set up the signal stack. #2522 might very well be related.
Will continue looking into it later tonight.
comment:5 by , 16 years ago
| Resolution: | → fixed |
|---|---|
| Status: | assigned → closed |
Fixed in hrev26810.
It's always interesting when actually all the information where already there. The stack trace is actually quite correct. A timer interrupt (or another hardware exception) happened right when having entered the kernel via an int 99, hence the trap99 + 0x000 return address. The 12 bytes the iframe seemed to be off, are actually 20 bytes (a kernel iframe is 8 bytes shorter), and those are what the int 99 already put on the kernel stack. So this much is correct. The only thing that must not happen in such a situation is kernel exit work, like setting up a signal handler, since we don't even have a userland iframe and thus overwrite kernel stack. Interestingly this resulted in a busy loop in this case.
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Next hang:
Welcome to Kernel Debugging Land... Thread 171 "sh" running on CPU 0 kdebug> teams team id parent name 0x90b80744 62 0x90b80000 app_server 0x90c0c000 94 0x90b80000 Terminal 0x90b80000 1 0x00000000 kernel_team 0x90c0c2e8 96 0x90b80000 media_server 0x90c0c45c 99 0x90b80000 midi_server 0x90c0c5d0 100 0x90b80000 print_server 0x90b80e88 170 0x90c0c744 sh 0x90b808b8 77 0x90b80000 syslog_daemon 0x90c0c174 171 0x90b80e88 sh 0x90c0c744 142 0x90c0c000 sh 0x90b80ba0 81 0x90b80744 input_server 0x90b802e8 53 0x90b80000 registrar 0x90b80174 116 0x90c0c2e8 media_addon_server 0x90b8045c 58 0x90b80000 debug_server 0x90b805d0 59 0x90b80000 net_server 0x90b80a2c 91 0x90b80000 Tracker 0x90b80d14 92 0x90b80000 Deskbar kdebug> threads 171 thread id state wait for object cpu pri stack team name 0x91488000 171 running - 0 10 0x80777000 171 sh kdebug> sc 171 stack trace for thread 171 "sh" kernel stack: 0x80777000 to 0x8077b000 user stack: 0x7efef000 to 0x7ffef000 frame caller <image>:function + offset 0 8077a584 (+ 48) 80053e0d <kernel>:invoke_debugger_command + 0x00ed 1 8077a5b4 (+ 64) 80053c05 <kernel>:invoke_pipe_segment__FP21debugger_comma9 2 8077a5f4 (+ 64) 80053f4d <kernel>:invoke_debugger_command_pipe + 0x009d 3 8077a634 (+ 48) 80054e28 <kernel>:_ParseCommandPipe__16ExpressionParserRi4 4 8077a664 (+ 48) 800547de <kernel>:EvaluateCommand__16ExpressionParserPCcRe 5 8077a694 (+ 224) 800561f4 <kernel>:evaluate_debug_command + 0x0088 6 8077a774 (+ 64) 80052286 <kernel>:kernel_debugger_loop__Fv + 0x01ae 7 8077a7b4 (+ 48) 80052e1b <kernel>:kernel_debugger + 0x0117 8 8077a7e4 (+ 192) 80052cf9 <kernel>:panic + 0x0029 9 8077a8a4 (+ 48) 8079edf5 </boot/beos/system/add-ons/kernel/bus_managers/pd 10 8077a8d4 (+ 64) 80035ba8 <kernel>:int_io_interrupt_handler + 0x00e0 11 8077a914 (+ 48) 800b2950 <kernel>:hardware_interrupt + 0x006c 12 8077a944 (+ 12) 800b5df6 <kernel>:int_bottom + 0x0036 (nearest) iframe at 0x8077a950 (end = 0x8077a9a8) eax 0x200 ebx 0x90b71030 ecx 0x0 edx 0x246 esi 0x1 edi 0x91bada10 ebp 0x8077a9a0 esp 0x8077a984 eip 0x800b25bc eflags 0x246 vector: 0x21, error code: 0x0 13 8077a950 (+ 80) 800b25bc <kernel>:arch_int_restore_interrupts + 0x0020 14 8077a9a0 (+ 32) 80035d32 <kernel>:restore_interrupts + 0x0012 15 8077a9c0 (+ 48) 800b5384 <kernel>:flush_tmap__FP18vm_translation_map + 0x0 16 8077a9f0 (+ 48) 800b4b0b <kernel>:unlock_tmap__FP18vm_translation_map + 07 17 8077aa20 (+ 64) 800a5640 <kernel>:vm_map_page + 0x0078 18 8077aa60 (+ 256) 800a7f07 <kernel>:vm_soft_fault__FP16vm_address_spaceUlbTf 19 8077ab60 (+ 64) 800a7028 <kernel>:vm_page_fault + 0x0080 20 8077aba0 (+ 64) 800b28cd <kernel>:page_fault_exception + 0x00b1 21 8077abe0 (+ 12) 800b5df6 <kernel>:int_bottom + 0x0036 (nearest) iframe at 0x8077abec (end = 0x8077ac44) eax 0x0 ebx 0xffff00d6 ecx 0x1 edx 0x914882ec esi 0x8077aca4 edi 0xffff00d6 ebp 0x8077ac70 esp 0x8077ac20 eip 0x800b5a94 eflags 0x10202 vector: 0xe, error code: 0x3 22 8077abec (+ 132) 800b5a94 <kernel>:arch_cpu_user_memcpy + 0x001e (nearest) 23 8077ac70 (+ 640) 800b3b83 <kernel>:arch_setup_signal_frame + 0x004f 24 8077aef0 (+ 96) 800427d2 <kernel>:handle_signals + 0x03ce 25 8077af50 (+ 64) 8004c9e6 <kernel>:thread_at_kernel_exit + 0x0076 26 8077af90 (+ 12) 800b60fb <kernel>:kernel_exit_handle_signals + 0x0006 (ne) iframe at 0x8077af9c (end = 0x8077aff4) eax 0x0 ebx 0x341ac8 ecx 0x1 edx 0x4 esi 0x18150698 edi 0x18000000 ebp 0x7ffee91c esp 0x8077afd0 eip 0x800b5f50 eflags 0x212 vector: 0xfd, error code: 0x0 27 8077af9c (+ 0) 800b5f50 <kernel>:trap99 + 0x0000 (nearest) 28 7ffee91c (+ 32) 002c92a4 <libroot.so>:malloc + 0x01a4 29 7ffee93c (+ 48) 00248ab5 <_APP_>:xrealloc + 0x0035 30 7ffee96c (+ 192) 00233729 <_APP_>:unlink_fifo_list + 0x0459 (nearest) 31 7ffeea2c (+ 80) 00233b6d <_APP_>:command_substitute + 0x0345 32 7ffeea7c (+ 112) 002368c7 <_APP_>:pat_subst + 0x1bd7 (nearest) 33 7ffeeaec (+ 80) 002376dc <_APP_>:expand_words_shellexp + 0x0420 (nearest) 34 7ffeeb3c (+ 48) 0023792c <_APP_>:expand_words_shellexp + 0x0670 (nearest) 35 7ffeeb6c (+ 48) 0023728d <_APP_>:expand_words + 0x0021 36 7ffeeb9c (+ 112) 00226d09 <_APP_>:execute_command_internal + 0x2f65 (neare) 37 7ffeec0c (+ 96) 00224262 <_APP_>:execute_command_internal + 0x04be 38 7ffeec6c (+ 80) 00223bed <_APP_>:execute_command + 0x0065 39 7ffeecbc (+ 48) 002264f6 <_APP_>:execute_command_internal + 0x2752 (neare) 40 7ffeecec (+ 80) 00224458 <_APP_>:execute_command_internal + 0x06b4 41 7ffeed3c (+ 64) 002253df <_APP_>:execute_command_internal + 0x163b (neare) 42 7ffeed7c (+ 96) 002244e4 <_APP_>:execute_command_internal + 0x0740 43 7ffeeddc (+ 80) 00223bed <_APP_>:execute_command + 0x0065 44 7ffeee2c (+ 64) 00225614 <_APP_>:execute_command_internal + 0x1870 (neare) 45 7ffeee6c (+ 80) 00224380 <_APP_>:execute_command_internal + 0x05dc 46 7ffeeebc (+ 80) 00223bed <_APP_>:execute_command + 0x0065 47 7ffeef0c (+ 48) 0021f8a5 <_APP_>:reader_loop + 0x01d1 48 7ffeef3c (+ 64) 0021dae2 <_APP_>:main + 0x07b2 49 7ffeef7c (+ 48) 0021679f <_APP_>:_start + 0x005b 50 7ffeefac (+ 48) 001008ea 3562:runtime_loader_seg0ro@0x00100000 + 0x8ea 51 7ffeefdc (+ 0) 7ffeefec 3561:sh_main_stack@0x7efef000 + 0xffffec(This time, stack trace was taken after trying to Ctrl+C.)