Ticket #2008 (closed defect: fixed)
[patch] mc coredumps on exit
| Reported by: | fjoe | Owned by: | andrew_b |
|---|---|---|---|
| Priority: | major | Milestone: | 4.7.1 |
| Component: | mc-core | Version: | 4.7.0.2 |
| Keywords: | Cc: | ||
| Blocked By: | Blocking: | ||
| Branch state: | Votes for changeset: | committed-master committed-stable |
Description
When exiting mc crashes with following message:
read (subshell_pty ...): Bad address (14)
Subshell should be enabled and panels should be on (visible) to reproduce this bug.
Stack trace is:
(gdb) bt
#0 0x000000080118fa3c in kill () from /lib/libc.so.7
#1 0x000000080118e83b in abort () from /lib/libc.so.7
#2 0x0000000000451a72 in feed_subshell (how=0, fail_on_error=0) at subshell.c:1006
#3 0x00000000004515dc in do_subshell_chdir (directory=0x8026c1060 "/usr/home/fjoe/Downloads", do_update=0,
reset_prompt=1) at subshell.c:844
#4 0x000000000044b042 in get_parent_dir_name (cwd=0x7fffffffe340 "\220����\177",
lwd=0x472e3e "��L\211���\213��������n���fff\220fff\220ff\220ff\220H\211
$�H\211l$�H\203�\030H\205�t-�����H\211�H\211��M���H\211�H\211��~\213��H\211�H\213l$\020H\213
$\bH\203�\030�H\215=��\004") at main.c:440
#5 0x000000000041603d in panel_callback (w=0x8026c1000, msg=WIDGET_FOCUS, parm=0) at screen.c:2842
#6 0x000000000040d686 in dlg_focus (h=0x8026c1000) at dialog.c:403
#7 0x000000000040d6f0 in dlg_focus () at dialog.c:409
#8 0x000000000040d9f4 in do_select_widget (h=0x8026982b0, w=0x80267d280, dir=SELECT_EXACT) at dialog.c:521
#9 0x000000000040de71 in dlg_key_event (h=0x8026982b0, d_key=274) at dialog.c:701
#10 0x000000000040df0e in dlg_key_event (h=0x8026982b0, d_key=274) at dialog.c:723
#11 0x000000000040e34f in frontend_run_dlg (h=0x40e34f) at dialog.c:842
#12 0x000000000040e435 in run_dlg (h=0x112026982b0) at dialog.c:871
#13 0x000000000040e49e in destroy_dlg (h=0x40e49e) at dialog.c:883
#14 0x000000000044e031 in prepend_cwd_on_local (filename=0x8026982b0 "") at main.c:1806
#15 0x000000000044e3bd in OS_Setup () at main.c:1911
#16 0x000000000044ec33 in main (argc=1, argv=0x7fffffffe688) at main.c:2240
The reason is that pty_buffer becomes NULL when event is processed (when exit_subshell() is called), but after event is processed panel_callback is called with msg=WIDGET_FOCUS which in turns leads to feed_subshell being called.
Quick workaround attached.
Attachments
Change History
Changed 14 years ago by andrew_b
- Attachment 0001-Ticket-2008-reimplemented-pty_buffer-as-static-buf.patch added
comment:1 in reply to: ↑ description Changed 14 years ago by andrew_b
Replying to fjoe:
The reason is that pty_buffer becomes NULL when event is processed (when exit_subshell() is called), but after event is processed panel_callback is called with msg=WIDGET_FOCUS which in turns leads to feed_subshell being called.
Quick workaround attached.
I have never seen this crash. Would you try my alternative patch 0001-Ticket-2008-reimplemented-pty_buffer-as-static-buf.patch?
comment:2 Changed 14 years ago by andrew_b
- Status changed from new to accepted
- Owner set to andrew_b
- severity changed from no branch to on review
Created 2008_pty_buffer branch. Parent branch is master.
changeset:06ed7da041cee4584f0315be85d9cb55834aeffb
comment:5 Changed 14 years ago by slavazanko
- Votes for changeset changed from angel_il to angel_il slavazanko
- severity changed from on review to approved
comment:6 Changed 14 years ago by andrew_b
- Status changed from accepted to testing
- Votes for changeset changed from angel_il slavazanko to commited-master
- Resolution set to fixed
- severity changed from approved to merged
Merged to master.
changeset:163b07d23f32a44d0133c4d74888b321fb5246cf
comment:7 Changed 14 years ago by andrew_b
- Status changed from testing to closed
- Votes for changeset changed from commited-master to commited-master commited-stable
Cherry-picked to 4.7.0-stable.
changeset:1d8df79e60d62ff6818b3386a4d6759d1bed1603
