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Groups > linux.debian.bugs.dist > #1025348
| From | Thorsten Glaser <tg@mirbsd.de> |
|---|---|
| Newsgroups | linux.debian.bugs.dist, linux.debian.ports.68k |
| Subject | Bug#970460: qemu-user: trashes argv[0] breaking multi-call binaries |
| Date | 2020-09-16 19:00 +0200 |
| Message-ID | <APIWK-6uw-5@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
Cross-posted to 2 groups.
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Package: qemu-user Version: 1:5.1+dfsg-4 Severity: important X-Debbugs-Cc: tg@mirbsd.de, debian-68k@lists.debian.org I’m attaching a test program that does the following: • if argv[1] is "-" it just outputs argv[0] and argv[1] • otherwise it also execve(2)s argv[1] with its argv[0] set to "meow" I’ve installed the extra packages: • gcc-arm-linux-gnueabi • libc6-dev-armel-cross tglase@tglase-nb:~ $ gcc -Wall -Wextra -o native tst.c 1|tglase@tglase-nb:~ $ ./native ./native argv[0]: ./native argv[1]: ./native calling... argv[0]: meow argv[1]: - not calling tglase@tglase-nb:~ $ arm-linux-gnueabi-gcc -o cross tst.c -static tglase@tglase-nb:~ $ ./cross ./cross argv[0]: ./cross argv[1]: ./cross calling... argv[0]: ./cross argv[1]: - not calling tglase@tglase-nb:~ $ ./cross ./native argv[0]: ./cross argv[1]: ./native calling... argv[0]: meow argv[1]: - not calling tglase@tglase-nb:~ $ ./native ./cross argv[0]: ./native argv[1]: ./cross calling... argv[0]: ./cross argv[1]: - not calling As you can see, if the callee of an exec is a qemu-user target, argv[0] is trashed. This, among other things, makes qemu-user-static-based buildds unworkable. -- System Information: Debian Release: bullseye/sid APT prefers unstable-debug APT policy: (500, 'unstable-debug'), (500, 'oldstable-updates'), (500, 'buildd-unstable'), (500, 'unstable'), (500, 'oldstable'), (1, 'experimental-debug'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 5.7.0-2-amd64 (SMP w/2 CPU threads) Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /bin/lksh Init: sysvinit (via /sbin/init) Versions of packages qemu-user depends on: ii libc6 2.31-3 ii libcapstone3 4.0.1+really+3.0.5-2 ii libgcc-s1 10.2.0-7 ii libglib2.0-0 2.66.0-1 ii libgnutls30 3.6.15-2 ii libstdc++6 10.2.0-7 ii zlib1g 1:1.2.11.dfsg-2 Versions of packages qemu-user recommends: ii qemu-user-static [qemu-user-binfmt] 1:5.1+dfsg-4 Versions of packages qemu-user suggests: ii sudo 1.9.1-2 -- no debconf information
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Bug#970460: qemu-user: trashes argv[0] breaking multi-call binaries Thorsten Glaser <tg@mirbsd.de> - 2020-09-16 19:00 +0200
Bug#970460: qemu-user: trashes argv[0] breaking multi-call binaries John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> - 2020-09-16 19:20 +0200
Bug#970460: qemu-user: trashes argv[0] breaking multi-call binaries Michael Tokarev <mjt@tls.msk.ru> - 2020-09-16 20:00 +0200
Bug#970460: qemu-user: trashes argv[0] breaking multi-call binaries Thorsten Glaser <tg@mirbsd.de> - 2020-09-16 21:00 +0200
Bug#970460: qemu-user: trashes argv[0] breaking multi-call binaries Andreas Schwab <schwab@linux-m68k.org> - 2020-09-16 21:20 +0200
Bug#970460: qemu-user: trashes argv[0] breaking multi-call binaries Michael Tokarev <mjt@tls.msk.ru> - 2020-09-16 21:30 +0200
Bug#970460: qemu-user: trashes argv[0] breaking multi-call binaries Thorsten Glaser <tg@mirbsd.de> - 2020-09-16 21:50 +0200
Bug#970460: qemu-user: trashes argv[0] breaking multi-call binaries Michael Tokarev <mjt@tls.msk.ru> - 2020-09-16 22:10 +0200
Bug#970460: qemu-user: trashes argv[0] breaking multi-call binaries Michael Tokarev <mjt@tls.msk.ru> - 2020-09-17 10:00 +0200
Bug#970460: qemu-user: trashes argv[0] breaking multi-call binaries Thorsten Glaser <tg@mirbsd.de> - 2020-09-17 23:50 +0200
Bug#970460: qemu-user: trashes argv[0] breaking multi-call binaries Finn Thain <fthain@telegraphics.com.au> - 2020-09-18 01:40 +0200
Bug#970460: qemu-user: trashes argv[0] breaking multi-call binaries Thorsten Glaser <tg@debian.org> - 2020-09-19 22:10 +0200
Bug#970460: qemu-user: trashes argv[0] breaking multi-call binaries Michael Tokarev <mjt@tls.msk.ru> - 2020-09-17 10:20 +0200
Bug#970460: [Bug libc/23960] [2.28 Regression]: New getdents{64} implementation breaks qemu-user Thorsten Glaser <tg@mirbsd.de> - 2020-10-03 01:30 +0200
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