-or- it uncovers a bug in kernel v3.15-rc3 for UML: 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 -- To unsubscribe from this list: send the line "unsubscribe trinity" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html