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IRIX Patches 1995 June
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SGI IRIX Patches 1995 Jun.iso
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relnotes
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patchSG0000158
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ch1.z
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1995-06-12
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1. _R_e_l_e_a_s_e__N_o_t_e_s__f_o_r__I_R_I_X__5_._3__p_a_t_c_h__S_G_0_0_0_0_1_5_8
This release note describes patch SG0000158 to IRIX 5.3. It
contains the following information:
+o Hardware platforms supported
+o List of the bugs which are fixed by this patch
+o Compatability considerations
+o List of subsystems included in this patch
+o Installation instructions
1.1 _H_a_r_d_w_a_r_e__p_l_a_t_f_o_r_m_s__s_u_p_p_o_r_t_e_d
This patch to IRIX 5.3 supports all hardware platforms.
1.2 _B_u_g_s__f_i_x_e_d__b_y__p_a_t_c_h__S_G_0_0_0_0_1_5_8
This patch contains fixes for the following problems which
exist in IRIX 5.3 (bug numbers from SGI bug tracking system
are included for reference):
+o Changes were put into the kernel which allow the kernel
stack to be increased by an additional page for real-
time processes and otherwise on an as-needed basis.
This increases the reliability of the system by
eliminating scenarios in which the kernel stack might
overflow and panic the system (bug #240710).
This patch is not needed unless a particular kernel
stack overflow problem has been encountered. Running a
layered file system over NFS is one scenerio in which
this problem has been seen.
1.3 _C_o_m_p_a_t_a_b_i_l_i_t_y__c_o_n_s_i_d_e_r_a_t_i_o_n_s
+o dbx and odbx when invoked with the -k option will give
incorrect information whenever the kernel stack
extension page is involved e.g. the backtrace of a
process using the stack extension will be incorrect.
1.4 _S_u_b_s_y_s_t_e_m_s__i_n_c_l_u_d_e_d__i_n__p_a_t_c_h__S_G_0_0_0_0_1_5_8
This patch includes changes to the following IRIX 5.3
products: _e_o_e_1. The patchSG0000158 image contains the
following subsystems:
- 2 -
+o patchSG0000125.eoe1_sw.unix
1.5 _I_n_s_t_a_l_l_a_t_i_o_n__i_n_s_t_r_u_c_t_i_o_n_s
This patch is only installable on systems running IRIX 5.3.
This patch requires installation in miniroot mode. To
perform the installation, take the system down and follow
the normal procedures for starting up the installation tool
from the supplied release media. It is recommended that you
select all the patch subsystems that correspond to software
already installed on the system.
One way in which software patches differ from full releases
and maintenance releases is that patches are reversible:
you can remove the patch and restore the installed software
to its state before the patch was applied. This is done by
using the _v_e_r_s_i_o_n_s command as superuser:
vvvveeeerrrrssssiiiioooonnnnssss rrrreeeemmmmoooovvvveeee ppppaaaattttcccchhhhSSSSGGGG0000000000000000111155558888
Since this patch replaces some kernel object files, it is
necessary to rebuild the kernel image and reboot after
removing the patch:
aaaauuuuttttooooccccoooonnnnffffiiiigggg
rrrreeeebbbbooooooootttt