On Wed, Apr 30, 2014 at 8:19 PM, Toralf Förster <toralf.foerster@xxxxxx> wrote:
> -or- it uncovers a bug in kernel v3.15-rc3 for UML:
UML most not panic. :)
Do you have the trinity logs?
I'd like to know the syscalls parameters.
It looks like trinity managed it to crash a thread on the host side.
This is why ptrace() failed with ESRCH.
>
>
> commit 23dc478aba4134db51584d19e4783ec87ce87b88
> Author: Dave Jones <davej@xxxxxxxxxx>
> Date: Tue Apr 29 16:42:45 2014 -0400
>
> non-biarch arches aren't necessarily 32-bit.
>
> diff --git a/children/random-syscalls.c b/children/random-syscalls.c
> index 82e49f5..1d7e7ce 100644
> --- a/children/random-syscalls.c
> +++ b/children/random-syscalls.c
> @@ -32,7 +32,6 @@ static bool choose_syscall_table(void)
>
> if (biarch == FALSE) {
> active_syscalls = shm->active_syscalls;
> - do32 = TRUE;
> } else {
>
> /* First, check that we have syscalls enabled in either table. */
>
>
>
>
> I do get :
>
>
> Kernel panic - not syncing: do_syscall_stub : PTRACE_SETREGS failed, errno = 3
>
> CPU: 0 PID: 1303 Comm: trinity-c0 Not tainted 3.15.0-rc3 #1
> Stack:
> 085a4f54 085a4f54 4841fc48 00000004 086c8547 00002b58 00000003 00000011
> 4841fc58 084eae75 00000000 00000000 4841fc80 084e72e0 085b08e8 08700960
> 085ad7b4 4841fc90 00000000 00002b58 00000003 00000011 4841fcb4 080734c5
> Call Trace:
> [<080734c5>] ? run_syscall_stub+0x125/0x2c0
> [<084eae75>] dump_stack+0x26/0x28
> [<084e72e0>] panic+0x7a/0x194
> [<080734c5>] run_syscall_stub+0x125/0x2c0
> [<08073b15>] unmap+0xf5/0x110
> [<08061047>] do_ops+0xb7/0x160
> [<080615f8>] fix_range_common+0x448/0x480
> [<080e50f4>] ? vma_interval_tree_insert+0x74/0x80
> [<0806193e>] flush_tlb_range+0x3e/0x40
> [<080f045e>] move_page_tables+0x24e/0x280
> [<080f0577>] move_vma+0xe7/0x230
> [<080eda20>] ? get_unmapped_area+0xa0/0xc0
> [<080f08b8>] SyS_mremap+0x1f8/0x4c0
> [<08062ab4>] handle_syscall+0x64/0x80
> [<0849d4f1>] ? ptrace+0x31/0x80
> [<080797a2>] ? get_fp_registers+0x22/0x40
> [<08074815>] userspace+0x475/0x5f0
> [<0849d4f1>] ? ptrace+0x31/0x80
> [<08079d06>] ? os_set_thread_area+0x26/0x40
> [<08078cd0>] ? do_set_thread_area+0x20/0x50
> [<08078e48>] ? arch_switch_tls+0xb8/0x100
> [<0805f770>] fork_handler+0x60/0x70
>
> /home/tfoerste/workspace/bin/start_uml.sh: line 110: 9558 Aborted (core dumped) $LINUX earlyprintk ubda=$ROOTFS ubdb=$SWAP eth0=$NET mem=$MEM $TTY umid=uml_$NAME rootfstype=ext4 "$ARGS"
>
>
> --
> Toralf
>
>
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--
Thanks,
//richard
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