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IRIX Patches 1995 March
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SGI IRIX Patches 1995 Mar.iso
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patchSG0000182
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1995-03-10
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1. _P_a_t_c_h__S_G_0_0_0_0_1_8_2__R_e_l_e_a_s_e__N_o_t_e
This release note describes patch SG0000182 to IRIX 5.2.
1.1 _S_u_p_p_o_r_t_e_d__H_a_r_d_w_a_r_e__P_l_a_t_f_o_r_m_s
This patch contains bug fixes for all Indy, Indigo2 and
Challenge S platforms. The software cannot be installed on
other configurations.
1.2 _S_u_p_p_o_r_t_e_d__S_o_f_t_w_a_r_e__P_l_a_t_f_o_r_m_s
This patch contains bug fixes for IRIX 5.2, IRIX 5.2 for
Indy R4600PC and Challenge S, and IRIX 5.2 for Indy R4600SC,
XZ and Presenter. The software cannot be installed on other
configurations.
1.3 _B_u_g_s__F_i_x_e_d__b_y__P_a_t_c_h__S_G_0_0_0_0_1_8_2
This patch contains fixes for the following bugs in IRIX
5.2. Bug numbers from Silicon Graphics bug tracking system
are included for reference.
+o When TCP connections are being created at a high rate,
a system panic may occur with message "soaccept
!NOFDREF" (bug 249206). This fix avoids the race
between accept() and tcp_drop().
+o When TCP connections are being created at a high rate,
connections may time out even though the server is
largely idle, due to the backlog limit on the server's
initial connection socket being limited to a small
value (bug 245976). This change allows the maximum
backlog value to be reconfigured, by modifying the
variable somaxconn in /var/sysgen/master.d/bsd.
+o When remote TCP clients disappear forever (where the
client systems do not respond to pings), with
connections open and data queued for output, after the
local server has closed the connection, but before all
the data has been delivered and acknowledged, the TCP
socket is left in the kernel indefinitely, even if the
server set the SO_KEEPALIVE option (bug 248935). This
eventually uses up all available network buffer space.
This change adds a new kernel variable,
tcp_keep_timer_in_close, which may be set to a non-zero
value to permit SO_KEEPALIVE timeouts to act on such
sockets. The variable must presently be set using dbx
or some other such program which permits modification
of kernel variables.
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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_8_2
This patch release includes these subsystems:
+o patchSG0000182.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
Because you want to install patches for only the problems
you have encountered, patch software is not installed by
default. After reading the descriptions of the bugs fixed in
this patch, determine the patches that meet your specific
needs.
Patch software is installed like any other Silicon Graphics
software product. It must be installed from the miniroot.
Follow the instructions in your _I_R_I_S _S_o_f_t_w_a_r_e _I_n_s_t_a_l_l_a_t_i_o_n
_G_u_i_d_e to bring up the miniroot form of the software
installation tools.
Follow these steps to select a patch for installation:
1. At the Inst>prompt, type
iiiinnnnssssttttaaaallllllll ppppaaaattttcccchhhhSSSSGGGG_x_x_x_x_x_x_x
where _x_x_x_x_x_x_x is the patch number.
2. Select the desired patches for installation.
3. Initiate the installation sequence. Type
IIIInnnnsssstttt>>>> ggggoooo
4. You may find that two patches have been marked as
incompatible. If this occurs, you must deselect one
of the patches.
IIIInnnnsssstttt>>>> kkkkeeeeeeeepppp ppppaaaattttcccchhhhSSSSGGGG_x_x_x_x_x_x_x
where _x_x_x_x_x_x_x is the patch number.
5. After completing the installation process, exit the
_i_n_s_t program by typing
IIIInnnnsssstttt>>>> qqqquuuuiiiitttt
To remove a patch, use the _v_e_r_s_i_o_n_s _r_e_m_o_v_e command as you
would for any other software subsystem. The removal process
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reinstates the original version of software unless you have
specifically removed the patch history from your system.
vvvveeeerrrrssssiiiioooonnnnssss rrrreeeemmmmoooovvvveeee ppppaaaattttcccchhhhSSSSGGGG_x_x_x_x_x_x_x
where _x_x_x_x_x_x_x is the patch number.
To keep a patch but increase your disk space, use the
_v_e_r_s_i_o_n_s _r_e_m_o_v_e_h_i_s_t command to remove the patch history.
vvvveeeerrrrssssiiiioooonnnnssss rrrreeeemmmmoooovvvveeeehhhhiiiisssstttt ppppaaaattttcccchhhhSSSSGGGG_x_x_x_x_x_x_x
where _x_x_x_x_x_x_x is the patch number.