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https://github.com/alsa-project/alsa-utils
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ba2bc072dc
alsactl distributed as part of Fedora 40 got a SEGV:
# journalctl
...
May 17 00:55:58 dev64.localdomain kernel: alsactl[1923]: segfault at 28 ip 00005600705b3373 sp 00007ffd9712bef0 error 4 in alsactl[5600705af000+13000] likely on CPU 5 (core 8, socket 0)
...
As the following output of the debug session, card_free() tried a card
pointing NULL:
$ sudo coredumpctl debug alsactl
PID: 1923 (alsactl)
UID: 0 (root)
GID: 0 (root)
Signal: 11 (SEGV)
Timestamp: Fri 2024-05-17 00:55:58 JST (3h 34min ago)
Command Line: /usr/sbin/alsactl -s -n 19 -c -E ALSA_CONFIG_PATH=/etc/alsa/alsactl.conf --initfile=/lib/alsa/init/00main rdaemon
Executable: /usr/sbin/alsactl
Control Group: /system.slice/alsa-state.service
Unit: alsa-state.service
Slice: system.slice
Boot ID: 241b5a2ef86f4940bb3d340583c80d88
Machine ID: 437365709a8c488c9481ee4b6651c2ec
Hostname: dev64.localdomain
Storage: /var/lib/systemd/coredump/core.alsactl.0.241b5a2ef86f4940bb3d340583c80d88.1923.1715874958000000.zst (present)
Size on Disk: 81.7K
Package: alsa-utils/1.2.11-1.fc40
build-id: 3b6fec58b3566d666d6e9fd48e8fcf04f03f0152
Message: Process 1923 (alsactl) of user 0 dumped core.
Module libasound.so.2 from rpm alsa-lib-1.2.11-2.fc40.x86_64
Module alsactl from rpm alsa-utils-1.2.11-1.fc40.x86_64
Stack trace of thread 1923:
#0 0x00005600705b3373 card_free (alsactl + 0xa373)
#1 0x00005600705c0e54 state_daemon (alsactl + 0x17e54)
#2 0x00005600705b2339 main (alsactl + 0x9339)
#3 0x00007f4c0b9b7088 __libc_start_call_main (libc.so.6 + 0x2a088)
#4 0x00007f4c0b9b714b __libc_start_main_impl (libc.so.6 + 0x2a14b)
#5 0x00005600705b2df5 _start (alsactl + 0x9df5)
ELF object binary architecture: AMD x86-64
GNU gdb (Fedora Linux) 14.2-1.fc40
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Reading symbols from /usr/sbin/alsactl...
Reading symbols from /usr/lib/debug/usr/sbin/alsactl-1.2.11-1.fc40.x86_64.debug...
[New LWP 1923]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/usr/sbin/alsactl -s -n 19 -c -E ALSA_CONFIG_PATH=/etc/alsa/alsactl.conf --init'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 free_list (list=0x20) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:73
73 for (i = 0; i < list->size; i++)
(gdb) where
#0 free_list (list=0x20) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:73
#1 card_free (card=card@entry=0x5600707455f0) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:82
#2 0x00005600705c0e54 in state_daemon (file=file@entry=0x5600705c31a1 "/var/lib/alsa/asound.state", cardname=cardname@entry=0x0, period=period@entry=300,
pidfile=pidfile@entry=0x5600705c3170 "/var/run/alsactl.pid") at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:455
#3 0x00005600705b2339 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/alsactl.c:459
(gdb) list
68
69 static void free_list(struct id_list *list)
70 {
71 int i;
72
73 for (i = 0; i < list->size; i++)
74 free(list->list[i]);
75 free(list->list);
76 }
77
(gdb) up
#1 card_free (card=card@entry=0x5600707455f0) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:82
82 free_list(&c->blacklist);
(gdb) p c
$1 = (struct card *) 0x0
(gdb)
Closes: https://github.com/alsa-project/alsa-utils/pull/267
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
|
||
|---|---|---|
| .. | ||
| init | ||
| .gitignore | ||
| 90-alsa-restore.rules.in | ||
| alsa-restore.service.in | ||
| alsa-state.service.in | ||
| alsactl.1 | ||
| alsactl.c | ||
| alsactl.h | ||
| alsactl_init.xml | ||
| clean.c | ||
| daemon.c | ||
| info.c | ||
| init_parse.c | ||
| init_sysdeps.c | ||
| init_sysfs.c | ||
| init_ucm.c | ||
| init_utils_run.c | ||
| init_utils_string.c | ||
| list.h | ||
| lock.c | ||
| Makefile.am | ||
| monitor.c | ||
| state.c | ||
| utils.c | ||