Your message dated Wed, 8 Dec 2010 20:59:48 -0600 with message-id <20101209025948.ga3...@burratino> and subject line Re: Command-not-found handler crashes bash has caused the Debian Bug report #500066, regarding Command-not-found handler crashes bash to be marked as done.
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--- Begin Message ---Package: bash Version: 3.1dfsg-8 Severity: important This issue is present in all versions of bash with c-n-f handler (stable, unstable, testing, ...) Command-not-found handler crashes bash when non existing command is executed on background and handler executes binaries. Steps to reproduce: 1) install bash with command-not-found handler (probably already installed) 2) type "command_not_found_handle() { ls ; }" to define handler 3) type "blablablablabla &" several times (10 should suffice) 4) bash will crash eventually When only internals are used in function (like echo) the crash is not inflicted. Strace on bash shows: write(2, "[1] 22001\n", 10) = 10 write(1, "\33]0;ra...@blake: ~\7", 19) = 19 write(2, "$ ", 2) = 2 read(0, 0xbfb0382f, 1) = -1 EIO (Input/output error) write(2, "logout\n", 7) = 7 open("/home/ralph/.bash_logout", O_RDONLY|O_LARGEFILE) = 3 So bash probably lost stdin somewhere in handler and thus closes. -- System Information: Debian Release: 4.0 APT prefers stable APT policy: (500, 'stable') Architecture: i386 (i686) Shell: /bin/sh linked to /bin/bash Kernel: Linux 2.6.18-6-686 Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8) Versions of packages bash depends on: ii base-files 4 Debian base system miscellaneous f ii debianutils 2.17 Miscellaneous utilities specific t ii libc6 2.3.6.ds1-13etch5 GNU C Library: Shared libraries ii libncurses5 5.5-5 Shared libraries for terminal hand bash recommends no packages. -- no debconf information
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--- Begin Message ---Version: 4.0-1 Jonathan Nieder wrote: > Pavol Rusnak wrote: > >> Version: 3.1dfsg-8 > [...] >> 1) install bash with command-not-found handler (probably already installed) >> 2) type "command_not_found_handle() { ls ; }" to define handler >> 3) type "blablablablabla &" several times (10 should suffice) >> 4) bash will crash eventually > [...] >> read(0, 0xbfb0382f, 1) = -1 EIO (Input/output error) >> write(2, "logout\n", 7) = 7 >> open("/home/ralph/.bash_logout", O_RDONLY|O_LARGEFILE) = 3 >> >> So bash probably lost stdin somewhere in handler and thus closes. > > Yes, I can reproduce this sporadically with lenny (bash 3.2-4). > > I suspect the problem went away when the command_not_found_handle () > handling was implemented upstream for bash 4. What do you think? Closing optimistically. If similar symptoms appear on bash 4, the fix would probably be different anyway.
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