Re: port-cobalt/38391: Recently imported OpenSSH 5.0 crashes cobalt kernel via its sshd binary

[christos%zoulas.com@localhost (Christos Zoulas)]

The following reply was made to PR port-cobalt/38391; it has been noted by 
GNATS.

From: christos%zoulas.com@localhost (Christos Zoulas)
To: Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>
Cc: nick.hudson%dsl.pipex.com@localhost, gnats-bugs%NetBSD.org@localhost, 
        port-cobalt-maintainer%NetBSD.org@localhost, 
gnats-admin%NetBSD.org@localhost, 
        netbsd-bugs%NetBSD.org@localhost
Subject: Re: port-cobalt/38391: Recently imported OpenSSH 5.0 crashes cobalt 
kernel via its sshd binary
Date: Tue, 15 Apr 2008 13:15:24 -0400

 On Apr 16, 12:41am, tsutsui%ceres.dti.ne.jp@localhost (Izumi Tsutsui) wrote:
 -- Subject: Re: port-cobalt/38391: Recently imported OpenSSH 5.0 crashes coba
 
 | christos%zoulas.com@localhost wrote:
 | 
 | > I think it is file descriptor stuff. Try a Feb-15 kernel.
 | 
 | On RaQ1, with userland fetched from NetBSD-daily/HEAD/200804080000Z,
 | today's (2008/04/15 ~14:40 UTC) kernel:
 | ---
 | Enter passphrase for key '/home/tsutsui/.ssh/id_rsa': 
 | trap: address error (load or I-fetch) in kernel mode
 | status=0xfc03, cause=0x10, epc=0x8028f7fc, vaddr=0x23
 | pid=596 cmd=sshd usp=0x7fffcdc0 ksp=0xc6889c88
 | Stopped in pid 596.1 (sshd) at  netbsd:mutex_enter:     ll      t0,a0,0
 | db> tr
 | mutex_enter+0 (23,802403f0,1,0) ra 80240418 sz 0
 | unp_discard+28 (23,802403f0,1,0) ra 802405f0 sz 32
 | unp_scan+ec (23,802403f0,1,0) ra 80242498 sz 48
 | uipc_usrreq+210 (23,802403f0,1,0) ra 8023b7cc sz 56
 | sosend+4b8 (82daf138,0,c6889e18,83a76e00) ra 8023f3ec sz 88
 | do_sys_sendmsg+344 (82daf138,0,c6889e18,83a76e00) ra 8023f534 sz 192
 | sys_sendmsg+5c (82daf138,0,c6889e18,83a76e00) ra 80294d50 sz 80
 | syscall_plain+130 (82daf138,0,c6889e18,83a76e00) ra 8028e8fc sz 80
 | mips3_SystemCall+bc (82daf138,0,c6889e18,83a76e00) ra 7d72caf0 sz 0
 | PC 0x7d72caf0: not in kernel space
 | 0+7d72caf0 (82daf138,0,c6889e18,83a76e00) ra 0 sz 0
 | User-level: pid 596.1
 | db> 
 | ---
 | 
 | 2008/03/21 00:00:00 UTC kernel:
 | ---
 | Enter passphrase for key '/home/tsutsui/.ssh/id_rsa': 
 | trap: address error (load or I-fetch) in kernel mode
 | status=0xfc03, cause=0x10, epc=0x8028c03c, vaddr=0x3b
 | pid=563 cmd=sshd usp=0x7fffcdc0 ksp=0xc687bc80
 | Stopped in pid 563.1 (sshd) at  netbsd:mutex_enter:     ll      t0,a0,0
 | db> tr
 | mutex_enter+0 (3b,8023c4f0,1,0) ra 8023c518 sz 0
 | unp_discard+28 (3b,8023c4f0,1,0) ra 8023c71c sz 32
 | unp_scan+ec (3b,8023c4f0,1,0) ra 8023e6d4 sz 48
 | uipc_usrreq+248 (3b,8023c4f0,1,0) ra 80236dd8 sz 56
 | sosend+4c8 (82610dc8,0,c687be18,83a8be00) ra 8023b09c sz 96
 | do_sys_sendmsg+350 (82610dc8,0,c687be18,83a8be00) ra 8023b22c sz 192
 | sys_sendmsg+5c (82610dc8,0,c687be18,83a8be00) ra 80291590 sz 80
 | syscall_plain+130 (82610dc8,0,c687be18,83a8be00) ra 8028b13c sz 80
 | mips3_SystemCall+bc (82610dc8,0,c687be18,83a8be00) ra 7d72caf0 sz 0
 | PC 0x7d72caf0: not in kernel space
 | 0+7d72caf0 (82610dc8,0,c687be18,83a8be00) ra 0 sz 0
 | User-level: pid 563.1
 | db> 
 | 
 | 2008/02/15 00:00:00 UTC kernel:
 | ---
 | Enter passphrase for key '/home/tsutsui/.ssh/id_rsa': 
 | trap: address error (load or I-fetch) in kernel mode
 | status=0xfc03, cause=0x10, epc=0x8028ab8c, vaddr=0x3b
 | pid=596 cmd=sshd usp=0x7fffcdc0 ksp=0xc687bc80
 | Stopped in pid 596.1 (sshd) at  netbsd:mutex_enter:     ll      t0,a0,0
 | db> tr
 | mutex_enter+0 (3b,8023b0c0,1,0) ra 8023b0e8 sz 0
 | unp_discard+28 (3b,8023b0c0,1,0) ra 8023b2ec sz 32
 | unp_scan+ec (3b,8023b0c0,1,0) ra 8023d2a4 sz 48
 | uipc_usrreq+248 (3b,8023b0c0,1,0) ra 802359d4 sz 56
 | sosend+4c8 (82609dc8,0,c687be18,83a8c500) ra 80239c6c sz 96
 | do_sys_sendmsg+350 (82609dc8,0,c687be18,83a8c500) ra 80239dfc sz 192
 | sys_sendmsg+5c (82609dc8,0,c687be18,83a8c500) ra 802900e0 sz 80
 | syscall_plain+130 (82609dc8,0,c687be18,83a8c500) ra 80289c8c sz 80
 | mips3_SystemCall+bc (82609dc8,0,c687be18,83a8c500) ra 7d72caf0 sz 0
 | PC 0x7d72caf0: not in kernel space
 | 0+7d72caf0 (82609dc8,0,c687be18,83a8c500) ra 0 sz 0
 | User-level: pid 596.1
 | db> 
 | ---
 | 
 | 2008/01/01 00:00:00 UTC kernel:
 | ---
 | Enter passphrase for key '/home/tsutsui/.ssh/id_rsa': 
 | trap: address error (load or I-fetch) in kernel mode
 | status=0xfc03, cause=0x10, epc=0x802852ac, vaddr=0x43
 | pid=563 cmd=sshd usp=0x7fffbdc0 ksp=0xc6865c80
 | Stopped in pid 563.1 (sshd) at  netbsd:mutex_enter:     ll      t0,a0,0
 | db> tr
 | mutex_enter+0 (43,80236b10,1,0) ra 80236b38 sz 0
 | unp_discard+28 (43,80236b10,1,0) ra 80236d3c sz 32
 | unp_scan+ec (43,80236b10,1,0) ra 80238d10 sz 48
 | uipc_usrreq+248 (43,80236b10,1,0) ra 80231254 sz 56
 | sosend+4c4 (82c24388,0,c6865e18,83a9a300) ra 802356bc sz 96
 | do_sys_sendmsg+350 (82c24388,0,c6865e18,83a9a300) ra 8023584c sz 192
 | sys_sendmsg+5c (82c24388,0,c6865e18,83a9a300) ra 8028a800 sz 80
 | syscall_plain+130 (82c24388,0,c6865e18,83a9a300) ra 802843ac sz 80
 | mips3_SystemCall+bc (82c24388,0,c6865e18,83a9a300) ra 7d72caf0 sz 0
 | PC 0x7d72caf0: not in kernel space
 | 0+7d72caf0 (82c24388,0,c6865e18,83a9a300) ra 0 sz 0
 | User-level: pid 563.1
 | db> 
 | ---
 | 
 | Hmm...
 
 Andy committed some fixes for unp_discard...
 
 christos