Bug#621137: Random exec failures on ARM; breaks boot -- /init: exec: line 306: run-init: Unknown error 2372692
Many thanks, Loïc! I was beginning to feel REALLY puzzled by some of the inconsistent behaviour I was seeing (on HP MediaVault 2120/5020 as well as NSLU2). It's good to hear someone else getting that too, and some progress towards a solution (and a workaround I can try).
Barry
On 6 Apr 2011, at 20:02, Loïc Minier wrote:
> Package: busybox
> Version: 1:1.18.4-1
> Severity: serious
>
> Hi
>
> Short version: debian/patches/applets-fallback.patch causes a
> regression on ARM in Debian 1.18 packages.
>
> Multiple users reported issues when upgrading their ARM device
> (specifically NSLU2 hardware -- "slugs") to sid; they couldn't boot
> anymore; the serial console would show something like:
> [ 7.779891] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
> Begin: Running /scripts/local-bottom ... done.
> done.
> Begin: Running /scripts/init-bottom ... done.
> /init: exec: line 306: run-init: Unknown error 2372692
> [ 8.450448] Kernel panic - not syncing: Attempted to kill init!
> [ 8.452811] [<c003d100>] (unwind_backtrace+0x0/0xe0) from [<c03e93c0>] (panic+0x50/0x16c)
> [ 8.453186] [<c03e93c0>] (panic+0x50/0x16c) from [<c0054050>] (forget_original_parent+0xb4/0x1e4)
>
> Arnaud Patard and myself could reproduce in QEMU, with both versatile
> (ARMv5) and Versatile Express (ARMv7A) kernels. We considered that it
> could be a run-init issue in klibc, but it turns out that the error is
> from the initrd's /init interpreter, /bin/sh in the initrd, which comes
> from busybox (hence the output with line number information, this is
> the line of /init where run-init gets exec-ed).
>
> As this looked like either a toolchain issue or a busybox issue, we
> tried rebuilding busybox in multiple ways; this is the table of
> results I have:
> current package: Debian sid gcc (4.5) + Debian sid busybox (1.18) => fail
> rebuild: Debian sid gcc (4.5) + Debian sid busybox (1.18) => fail
> Debian sid gcc-4.4 + Debian sid busybox (1.18) => fail
> Emdebian squeeze cross (4.4) + Ubuntu natty busybox (1.17) => pass
> Ubuntu natty cross (4.5 + linaro) + Ubuntu natty busybox (1.17) => pass
> Debian squeeze busybox (1.17) => pass
> Debian stable busybox (1.17) => pass
> Debian-ports sid gcc (4.5) + Debian sid busybox (1.18) => pass (not same ABI!)
> Debian sid gcc 4.4 + Debian sid busybox (1.18) => fail
> Ubuntu natty cross (4.5 + linaro) + Busybox git tip => pass
> Ubuntu natty cross (4.5 + linaro) + Busybox git 1_18_4 => pass
>
> However I once got it to boot, with no changes, so it seems there are
> conditions where exec does not fail. I managed to boot multiple times
> by running exec a first time from an interactive shell and then
> exec-ing run-init.
>
> Upstream busybox would never be affected and 1.17 would never be
> affected, but Debian 1.18 would almost always be affected.
>
> I rebuilt the Debian source package verbatim, and it was still failing
> consistently; I rebuilt the Debian source package without
> debian/patches/applets-fallback.patch and it booted.
>
> This patch was refreshed in the latest upload:
> - either some issues were introduced during refresh
> - or the patch was always broken
>
> I didn't look at why the patch breaks (yet) and I don't have a smaller
> test case than the above, which is quite painful.
>
> Cheers,
> --
> Loïc Minier
>
>
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